DISPLAY DEVICE, DEVICE FOR DRIVING THE DISPLAY DEVICE AND METHOD OF DRIVING THE DISPLAY DEVICE

A display device including a plurality of pixels is disclosed. Each of the pixels includes a switching transistor, a plurality of scanning lines connected to the switching transistors and a plurality of data lines connected to the switching transistors. The scanning lines transmit a gate turn-on voltage that turns on the switching transistors and a gate turn-off voltage that turns off the switching transistors and the data lines transmit a data voltage. The gate turn-on voltage is determined based on a maximum value of the data voltage. The gate turn-on voltage based on the maximum value of the data voltage results in high luminance and less crosstalk phenomenon.

Display apparatus with multiple power modes and electronic system including the same

A display apparatus includes a display panel and a timing controller. The timing controller generates first output image data based on input image data and sets a driving frequency of the display panel as a first frequency in a first operation mode. The timing controller converts the input image data into second output image data and sets the driving frequency of the display panel as a second frequency lower than the first frequency in a second operation mode. The display panel displays a first image based on the first frequency and the first output image data in the first operation mode. The first image is represented by X grayscales. The display panel displays a second image based on the second frequency and the second output image data in the second operation mode. The second image is represented by Y grayscales, where Y is less than X.

Display device, device for driving the display device and method of driving the display device

A display device including a plurality of pixels is disclosed. Each of the pixels includes a switching transistor, a plurality of scanning lines connected to the switching transistors and a plurality of data lines connected to the switching transistors. The scanning lines transmit a gate turn-on voltage that turns on the switching transistors and a gate turn-off voltage that turns off the switching transistors and the data lines transmit a data voltage. The gate turn-on voltage is determined based on a maximum value of the data voltage. The gate turn-on voltage based on the maximum value of the data voltage results in high luminance and less crosstalk phenomenon.

Display device and driving circuit thereof for improving the accuracy of gamma tuning

A display device and a driving circuit thereof are disclosed. In one aspect, the display device includes a display panel, a gamma reference voltage generator, a data driver and a driving controller. The display panel includes a plurality of pixels, each pixel including first and second sub-pixels. The gamma reference voltage generator generates one or more first gamma reference voltages each having a high gamma value greater than a reference gamma value, and one or more second gamma reference voltages each having a low gamma value less than the reference gamma value. The data driver generates a data voltage based at least in part on one or more of the first and second gamma reference voltages, and provides the data voltage to the first and second sub-pixels. The driving controller determines a gamma value and a data voltage output pattern according to a driving method of the display panel.

Light emission driving circuit, scan driving circuit and display device including same

A light emission driving circuit includes a driving circuit configured to output a light emission driving signal to a first output terminal and output a switching signal to a first node in response to clock signals and a first carry signal, and a first masking circuit configured to output a second carry signal to a second output terminal in response to a masking clock signal, the light emission driving signal, and the first switching signal. The masking clock signal is a signal which is maintained at a first level during a normal mode and periodically changes during a low power mode.

PIXEL AND ORGANIC LIGHT EMITTING DISPLAY INCLUDING THE SAME

Provided is a pixel including an organic light emitting diode, a driving circuit, and a light receiving circuit. The driving circuit is configured to supply a driving current corresponding to a data signal supplied through a data line during a scan period to the organic light emitting diode during an emission period, and to supply a first sensing current corresponding to threshold voltage/mobility information of a driving transistor or degradation information of the organic light emitting diode to a feedback line during a current sensing period. The light receiving circuit is configured to supply a second sensing current corresponding to luminance of the organic light emitting diode to the feedback line during the emission period. 1. A pixel comprising:an organic light emitting diode;a driving circuit configured to supply a driving current corresponding to a data signal supplied through a data line during a scan period to the organic light emitting diode during an emission period, and to supply a first sensing current corresponding to threshold voltage/mobility information of a driving transistor or degradation information of the organic light emitting diode to a feedback line during a current sensing period; anda light receiving circuit configured to supply a second sensing current corresponding to luminance of the organic light emitting diode to the feedback line during the emission period.2. The pixel of claim 1 , wherein the driving circuit comprises:a scan transistor configured to turn on in response to a scan signal to charge a capacitor with a voltage corresponding to a data signal supplied through the data line;a driving transistor configured to adjust an amplitude of the driving current supplied from a first power source to a second power source via the organic light emitting diode; anda first switching transistor coupled between an anode of the organic light emitting diode and the feedback line, the first switching transistor configured to turn on in ...

Organic light emitting device, and apparatus and method of generating modification information therefor

An organic light emitting device including a display panel including a plurality of pixels respectively including a driving transistor and an organic light emitting element; a driving unit to supply a driving signal to the display panel; a signal controller to control the driving unit; a signal modification unit to modify an input image signal based on modification information to generate a modified image signal; and a modification controller to generate and provide the modification information to the signal modification unit. The signal modification unit includes a first modification unit to convert the input image signal into a first modified signal according to first modification information generated based on a characteristic deviation of the driving transistor, and a second modification unit to convert the first modified signal into a second modified signal according to second modification information generated based on a characteristic deviation of the organic light emitting element ...

DISPLAY DEVICE AND METHOD OF SENSING A THRESHOLD VOLTAGE

A display device includes a display panel, a scan driver, a data driver, a sensing circuit, and a controller configured to select a pixel row from a plurality of pixel rows in a vertical blank period of each frame period. The vertical blank period includes a sensing time in which the sensing circuit performs a sensing operation for the selected pixel row. The sensing circuit measures a first source voltage of a driving transistor of each pixel in the selected pixel row at a first time point of the sensing time, and measures a second source voltage of the driving transistor at a second time point of the sensing time. The controller predicts a current saturated source voltage of the driving transistor based on the first and second source voltages, and determines a threshold voltage change amount of the driving transistor based on a difference between a previous saturated source voltage and the current saturated source voltage.

Display apparatus and method of driving display panel using the same

A display apparatus includes a timing controller, a data driver and a display panel. The timing controller receives input image data at a first frequency substantially equal to a frame rate of an input image. The timing controller generates a data signal having the first frequency based on the input image data having the first frequency. The data driver converts the data signal into a data voltage. The display panel displays an image based on the data voltage.

Organic light-emitting diode display

An organic light emitting diode (OLED) display includes a first pixel including a first light emitting diode, a first driving transistor connected to the first light emitting diode and having a first terminal, a second terminal, and a third terminal, and a first storage capacitor connected between the first terminal and the second terminal of the first driving transistor, and a second pixel including a second light emitting diode, a second driving transistor connected to the second light emitting diode and having a first terminal, a second terminal, and a third terminal, and a second storage capacitor connected between the first terminal and the second terminal of the second driving transistor, wherein the first storage capacitor has a different capacitance than the second storage capacitor.

Vertical alignment display device with enhanced contrast

A vertical alignment liquid crystal display includes two sub-pixels each with a variable capacitor. A pixel is bisected into a high gray sub-pixel and a low gray sub-pixel through forming a variable capacitor at each sub-pixel. With this structure, the sub-pixels express different grays so that lateral visibility is enhanced. It is not required in bisecting a pixel into two sub-pixels to form separate wires for applying different signals thereto, and the amount of data to be processed at the driver for driving the display device is reduced. Furthermore, a pixel is bisected into two sub-pixels with variable capacitors in a simplified manner, and it is not required to form additional wires and elements, so the aperture ratio is enhanced.

Image processor, display device including the same and method for driving display panel using the same

An image processor, a display device including the same, and a method for driving display panel using the same are disclosed. In one aspect, the display device includes an image shifter configured to shift a data signal by at least one pixel based at least in part on a shift start signal and output the shifted data signal and a shift direction signal. The display device also includes an image buffer configured to output current data and previous data based at least in part on the shifted data signal and the shift direction signal. The display device also includes an image mixer configured to mix the current data and the previous data over M frames starting at a start frame when the shift start signal is received and output image data, M being a natural number.

Display panel, including a light blocking member and apertures disposed in a non-display area

A display panel includes a display area including a plurality of pixels, and a peripheral area defining a non-display area. The display area includes a first light blocking member including a plurality of first openings, and the peripheral area includes a second light blocking member including a plurality of second openings.

Organic light-emitting diode display

An organic light emitting diode (OLED) display includes a first pixel including a first light emitting diode, a first driving transistor connected to the first light emitting diode and having a first terminal, a second terminal, and a third terminal, and a first storage capacitor connected between the first terminal and the second terminal of the first driving transistor, and a second pixel including a second light emitting diode, a second driving transistor connected to the second light emitting diode and having a first terminal, a second terminal, and a third terminal, and a second storage capacitor connected between the first terminal and the second terminal of the second driving transistor, wherein the first storage capacitor has a different capacitance than the second storage capacitor.

DISPLAY PANEL AND METHOD OF DRIVING THE SAME

A display panel includes: a first pixel including: a first high pixel configured to represent a first high gray level; and a first low pixel configured to represent a first low gray level; and a second pixel adjacent the first pixel in a first direction, the second pixel including: a second high pixel configured to represent a second high gray level based on a second data voltage and the common voltage in response to the first gate signal; and a second low pixel configured to represent a second low gray level based on the second data voltage, the common voltage, and a second divided voltage different from the first divided voltage in response to the first gate signal. 1. A display panel comprising: a first high pixel configured to represent a first high gray level based on a first data voltage and a common voltage in response to a first gate signal; and', 'a first low pixel configured to represent a first low gray level based on the first data voltage, the common voltage, and a first divided voltage in response to the first gate signal; and, 'a first pixel comprising a second high pixel configured to represent a second high gray level based on a second data voltage and the common voltage in response to the first gate signal; and', 'a second low pixel configured to represent a second low gray level based on the second data voltage, the common voltage, and a second divided voltage different from the first divided voltage in response to the first gate signal., 'a second pixel adjacent the first pixel in a first direction, the second pixel comprising2. The display panel of claim 1 , wherein the first high pixel comprises:a first high pixel electrode; and a first gate line configured to apply the first gate signal;', 'a first data line configured to apply the first data voltage; and', 'the first high pixel electrode,, 'a first high switching element coupled to a first low pixel electrode;', 'a first low switching element coupled to the first gate line, the first data ...

Display device

Embodiments of the present invention relate to a display device. In an embodiment, the display device includes a scanning signal line for transferring a scanning signal, a data line crossing the scanning signal line and transferring a data voltage, a switching transistor connected to the scanning signal line and the data line, a driving transistor connected to the switching transistor, a first transistor connected between the driving transistor and a driving voltage terminal, and a light-emitting element connected between the driving transistor and a common voltage terminal. The first transistor operates in a saturation region, and the driving transistor operates in a linear region. In this way, display characteristics may be improved by reducing deviation of a driving current due to deviation of characteristics of a driving transistor or a driving voltage.

Display apparatus and method for driving the same

A display apparatus includes a display panel and a first gate driver. The display panel includes a plurality of data lines extending in a first direction, and a plurality of gate lines extending in a second direction obliquely inclined toward the first direction and spaced apart from each other in a third direction crossing the second direction. The plurality of gate lines includes a first gate line group and a second gate line group respectively disposed in first and second display areas of the display panel. The first gate driver is configured to drive at least one gate line of the second gate line group while driving at least one gate line of the first gate line group.

Method of driving odd and even gate lines of a display panel, and display apparatus for performing the same

A method of driving a display panel is disclosed. In one aspect, the display panel includes a plurality of pixels arranged in odd and even rows and a plurality of odd and even gate lines respectively connected to the pixels of the corresponding odd and even rows. The method includes outputting odd gate signals to the odd numbered gate lines during two consecutive subframes and outputting even gate signals to the even numbered gate lines during two consecutive subframes. A frame is divided into two subframes.

DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME

A display apparatus includes a display panel, a driving controller and a data driver. The driving controller is configured to predict a panel temperature according to a position in the display panel based on input image data, to calculate a block current of a display block of the display panel and a panel resistance according to the position in the display panel based on the panel temperature, to calculate a voltage drop according to the position in the display panel based on the block current and the panel resistance and to compensate the input image data based on the voltage drop to generate a data signal. The data driver is configured to convert the data signal to a data voltage and to output the data voltage to the display panel.

Data driver, display apparatus including the same and method of driving display panel using the same

A data driver includes a digital to analog converter, a buffer and a buffer controller. The digital to analog converter is configured to receive a data signal having a digital type and to convert the data signal into a data voltage having an analog type. The buffer is configured to buffer the data voltage and to output the data voltage. The buffer controller is configured to determine a parameter of the buffer based on previous line data of the data signal and present line data of the data signal.

Display and manufacturing method thereof

A display includes a substrate, a control electrode formed on the substrate, input and output electrodes formed on the substrate having facing sides facing each other with respect to the control electrode, a semiconductor layer contacting the input and the output electrodes, and an insulating layer formed between the control electrode and the semiconductor layer. At least one of the facing sides of the input and output electrodes on the semiconductor layer has a plurality of protrusions. The channel between the input and output electrodes is formed with various shapes, the length of the channel is prevented from being extending by a skew phenomenon, and the width of the channel may be extended.

Display device and a driving method thereof

A display device and a driving method thereof are provided. The display device comprises a plurality of pixels, each pixel includes: a light emitting element; a storage capacitor; a driving transistor that has a control terminal, an input terminal, and an output terminal and supplies a current to the light emitting element to emit light; a first switching transistor for supplying a data voltage to the storage capacitor in response to a scanning signal; a second switching transistor for diode-connecting the driving transistor in response to a previous scanning signal; and a third switching transistor for supplying a driving voltage to the driving transistor in response to an emission signal, wherein the storage capacitor stores a control voltage depending on a threshold voltage of the driving transistor and a threshold voltage of the light emitting element through the diode-connected driving transistor, and transmits the control voltage and the data voltage to the control terminal of the ...

Display substrate, display panel having the same, and method of testing a display substrate

A display substrate includes a gate wire, a data wire which crosses the gate wire, a display part, a dummy pixel part and a test part. The display part includes a pixel element electrically connected to the gate wire and the data wire, and the pixel element includes a display element. The dummy pixel part surrounds the display part to protect the pixel element from static electricity. The test part is formed adjacent to the display part and includes a test element having a test display element formed in a substantially same manner as the display element.

Data driver and display device including a data driver

A data driver includes a gamma voltage generator configured to generate gamma voltages based on a number of data bits of a pixel data; a first digital-to-analog block configured to generate a plurality of time-division gamma voltage signals respectively corresponding to a plurality of gamma voltage groups; a plurality of time-division gamma voltage line groups for transferring the plurality of time-division gamma voltage signals; a second digital-to-analog block configured to select a time-division gamma voltage signal among the time-division gamma voltage signals according to upper bits of the pixel data in each channel; a time-division gamma voltage select block configured to select a gamma voltage according to lower bits of the pixel data in each channel; and an output buffer block configured to output the selected gamma voltage in each channel.

Organic light emitting diode display

An organic light emitting diode (OLED) display includes a substrate, a gate line, a data line, a driving voltage line, a light blocking member, a switching thin film transistor (TFT), a driving TFT, and an OLED, wherein the driving voltage line includes a portion parallel to at least one of the gate line and the data line, the light blocking member is formed under at least one of the gate line, the data line, and the driving voltage line, the switching TFT is connected to the gate line and the data line and includes an amorphous semiconductor, the driving TFT is connected to the switching TFT and includes a polycrystalline semiconductor, and the OLED is connected to the driving TFT.

DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME

Provided is a display device including: a display panel, a timing controller, a gate driver, and a data driver. The display panel includes a display area configured to display an image and a non-display area adjacent to one side of the display area. The display area includes oblique lines, intersectional lines crossing and isolated from at least a part of the oblique lines, and pixels. Pixels coupled to the oblique lines or the intersectional lines and arranged along a line in one direction are defined into pixel rows. The display area further includes a plurality of areas divided by the pixel rows being successive. The number of pixels constituting one of adjacent ones of the pixel rows in at least one of the plurality of areas is different from the number of pixels constituting another thereof. 1. A display device comprising:a display panel comprising a display area configured to display an image and a non-display area adjacent to one side of the display area, the display area comprising oblique lines, intersectional lines crossing and isolated from at least a part of the oblique lines, and pixels, wherein pixels being coupled to the oblique lines or the intersectional lines and arranged along a line in one direction are defined into pixel rows;a timing controller configured to receive a control signal and an input image signal, and to output a first control signal, a second control signal, and a data signal;a gate driver configured to generate a gate signal based on the first control signal, and to output the gate signal to the oblique lines and the intersectional lines via the non-display area; anda data driver configured to output a data voltage, obtained by converting the data signal, to the oblique lines and the intersectional lines via the non-display area in response to the second control signal,wherein the display area further comprises a plurality of areas divided by the pixel rows being successive, and the number of pixels constituting one of adjacent ...

OLED display

An OLED display includes a pixel having a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, each of which displays a different color, a gate line for transmitting gate signals to the pixel, a data line for transmitting data signals to the pixel, a first driving voltage line that transmits a driving voltage to the pixel and is substantially parallel to the data line, and a second driving voltage line that is connected to the first driving voltage line and is substantially parallel to the gate line.

Display device performing multi-frequency driving

A display device includes a display panel including a first partial panel region and a second partial panel region, and a panel driver configured to drive the display panel. The panel driver determines a first driving frequency for the first partial panel region and a second driving frequency for the second partial panel region. When the first driving frequency and the second driving frequency are different from each other, the panel driver sets a boundary portion including a boundary between the first partial panel region and the second partial panel region, and determines a third driving frequency for the boundary portion to be between the first driving frequency and the second driving frequency.

Driving controller and display apparatus for calculating current deterioration degree and compensating deterioration

A driving controller includes: a grayscale determiner, which determines a current grayscale of input image data, a deterioration time determiner, which determines a first deterioration time for the current grayscale corresponding to an accumulated deterioration degree, a current deterioration degree calculator, which calculates a second deterioration time by summing the first deterioration time and a calculation period, and calculates a current deterioration degree for the current grayscale according to the second deterioration time, and an image compensator, which compensates the input image data based on the current deterioration degree.

Electronic device

Provided is an electronic device according to an embodiment of the inventive concept may include a display panel including a plurality of pixels respectively connected to a plurality of data lines and a plurality of scan lines, a data driving circuit connected to the plurality of data lines, a scan driving circuit connected to the plurality of scan lines, and a driving controller generating image data, and controlling the data driving circuit and the scan driving circuit to display a plurality of frames at a first frequency on the display panel based on the image data, wherein at least one of the plurality of frames includes an effective interval during which an image is transmitted, a blanking interval during which the image is not transmitted, and a refresh interval operating at a second frequency different from the first frequency.

Liquid crystal display and driving method thereof

A liquid crystal display includes a signal controller to generate a plurality of start pulse signals based on a plurality of eye blinking signals during a predetermined mode of operation. The start pulse signals are generated in a manner different from a vertical synchronization signal. The start signals may be generated to have an irregular spacing which corresponds to the blinking signals, which may be different from a constant spacing used during display of moving images. The predetermined mode may be a still image mode.

Display device and processing method of image signal thereof

A image signal processing method of a liquid crystal display according to an exemplary embodiment of the present invention includes: receiving a previous image signal and a current image signal as two sequential input image signals; performing a first correction (DCC) and a doubling for the current image signal to generate a correction image signal comprising a plurality of doubled frames for the current image signal; and post-processing the portion of the plurality of doubled frames to generate a final correction image signal.

Pixel circuit

A pixel circuit includes a main-circuit that controls an organic light-emitting element by controlling a driving current to flow into the organic light-emitting element and a sub-circuit including a first compensation transistor including a gate terminal which receives a first gate signal, a second compensation transistor including a gate terminal which receives a second gate signal, and an initialization transistor including a gate terminal which receives an initialization signal. Here, in a low-frequency driving mode, a driving frequency of the first gate signal is N hertz (Hz), a driving frequency of the initialization signal is N Hz, a driving frequency of the second gate signal is M Hz, the first compensation transistor and the initialization transistor are turned on during a first time duration in N non-light-emitting periods per second, and the second compensation transistor is turned on during a second time duration in M non-light-emitting periods per second.

DISPLAY APPARATUS

A display apparatus includes a plurality of pixels arranged in columns and rows in a display area, a data line extending in a first direction and connected with pixels of a k-th column (‘k’ is a natural number) and a (k+1)-th column, a gate line extending in a second direction crossing the first direction and connected with ones of the pixels, a gate signal line extending in the first direction and connected with the gate line, and a gate driver in a first peripheral area adjacent to a first longer side of the display area and having a first width, and configured to apply a gate signal to the gate line. 1. A display apparatus comprising:a plurality of pixels arranged in columns and rows in a display area;a data line extending in a first direction and connected with pixels in a k-th column (‘k’ is a natural number) and a (k+1)-th column;a gate line extending in a second direction crossing the first direction and connected with ones of the pixels;a gate signal line extending in the first direction and connected with the gate line; anda gate driver in a first peripheral area adjacent to a first longer side of the display area and having a first width, and configured to apply a gate signal to the gate line.2. The display apparatus of claim 1 , further comprising:a second peripheral area adjacent to a second longer side opposite the first longer side of the display area and having a second width;a third peripheral area adjacent to a first shorter side extending between the first longer side and the second longer side of the display area; anda fourth peripheral area adjacent to a second shorter side and extending between the first longer side and the second longer side of the display area.3. The display apparatus of claim 2 , wherein the first width is greater than the second width.4. The display apparatus of claim 1 , wherein the gate signal line is at the same layer as the data line.5. The display apparatus of claim 4 , further comprising:a common line extending in the ...

GAMMA DATA GENERATOR, DISPLAY APPARATUS HAVING THE SAME AND METHOD OF DRIVING THE DISPLAY APPARATUS

A display apparatus includes a display panel comprising a data line, a gate line crossing the data line and a sub pixel connected to the data line and the gate line, a moving vector extractor configured to extract a moving vector of an input image using input data, a data generator configured to generate data of a high gamma curve called “high data” and data of a low gamma curve called “low data” corresponding to the input data using a spatiotemporal sequential pattern based on moving direction and moving speed of the moving vector, and a data driver circuit configured to covert the high data and the low data of the input data into a data voltage and provide the data line with the data voltage. 1. A display apparatus comprising:a display panel comprising a data line, a gate line crossing the data line and a sub pixel connected to the data line and the gate line;a moving vector extractor configured to extract a moving vector of an input image using input data;a data generator configured to generate data of a high gamma curve called “high data” and data of a low gamma curve called “low data” corresponding to the input data using a spatiotemporal sequential pattern based on moving direction and moving speed of the moving vector; anda data driver circuit configured to covert the high data and the low data of the input data into a data voltage to provide the data line with the data voltage.2. The display apparatus of claim 1 , wherein the data generator comprises:a sequential pattern look up table (LUT) configured to store a plurality of spatiotemporal sequential patterns corresponding to a plurality of moving directions and a plurality of moving speeds;a gamma LUT configured to store the high data corresponding to the input data based on the high gamma curve and the low data corresponding to the input data based on the low gamma curve; andan output controller configured to control the sequential pattern LUT and the gamma LUT based on the moving vector and to selectively ...

Display device, temperature estimator, and method of driving display device

A display device includes a display panel including a panel region. The panel region includes a block, and the block includes a pixel. The display device further includes a temperature sensor sensing a region temperature of the panel region and a temperature estimator estimating a temperature of the display panel. The temperature estimator includes a stress calculator calculating an accumulated stress value corresponding to the block based on input image data, a temperature potential calculator calculating a temperature potential corresponding to the block based on the accumulated stress value and a resistance model related to a heat diffusion within the display panel, and a temperature calculator calculating a block temperature based on the region temperature and the temperature potential. The temperature of the display panel is estimated based on the block temperature.

Display device and method for driving the same

A display device including a display panel which includes pixels connected to gate lines and data lines; and an image display control unit controlling an input image signal to be converted into a data signal and, thereby, display an image on the display panel. The image display control unit outputs the data signal so that a position of an image being displayed on the display panel is changed when the image signal is the same for a preselected time period and sets a next position change time period of the image according to a distance between an original position of the image and a changed position of the image.

Display device and driving method thereof

The present invention relates to a display device and a driving method thereof. A display device in the present invention comprises: a capacitor connected between a first node and a second node; a switching transistor controlled by a first scanning signal and transmitting a data voltage to the first node; an emission control transistor controlled by a second scanning signal and transmitting a reference voltage to the second node; a driving transistor comprising a control terminal connected to the first node, an output terminal connected to the second node, and an input terminal; a driving control transistor controlled by a third scanning signal and transmitting a driving voltage to the input terminal of the driving transistor; and a light-emitting device connected to the second node. Accordingly, display contrast of a display device may be improved.

Display device

A display device includes; first, second and third pixel electrodes, each of the first, the second and the third pixel electrodes comprising a first edge and a second edge longer than the first edge, a first, a second and a third electrode connected to the first, second and third pixel electrodes respectively, a fourth electrode opposing the first electrode with respect to a fifth electrode, a sixth electrode opposing the second electrode with respect to a seventh electrode, and an eighth electrode opposing the third electrode with respect to a ninth electrode, wherein each of the first, fourth and fifth electrodes include a first portion disposed between the first and second pixel electrode and a second portion disposed outside of a space between the first and second pixel electrode, and the second, the sixth and the seventh electrodes are disposed outside of a space between the second and third pixel electrode.

Scan driving circuit and display device including the same

A scan driving circuit includes: a driving circuit configured to output a scan signal to an output terminal in response to clock signals and a carry signal; and a masking circuit configured to stop the driving circuit from outputting the scan signal in response to a masking signal and a signal indicating an operating state of the driving circuit.

Display device

The present invention relates to a display device that includes a plurality of light-emitting elements that emit different-colored light, a plurality of driving transistors that supply driving currents to the light-emitting elements so that the light-emitting elements emit light, and a plurality of sense transistors that are exposed to the light-emitting elements and that generate a photocurrent on the basis of light emission of the light-emitting elements. The sense transistors corresponding to the light-emitting elements that emit light having different colors have different sizes from each other.

Organic light emitting diode with enhanced luminance and light uniformity

An organic light emitting diode display with enhanced luminance and light uniformity is presented, along with a method of manufacturing the display. The display including: a substrate, a first signal line formed on the substrate and a second signal line extending perpendicularly to the first signal line, and thin film transistors formed on the substrate and electrically coupled to the first signal line and the second signal line. A planarization member is formed on the same layer as the first signal line and/or the second signal line, such that it does not overlap the first signal line, the second signal line, and the thin film transistors. An insulating layer is formed on the first signal line, the second signal line, the thin film transistors, and the planarization member. Two electrodes are formed on the insulating layer connected to one of the thin film transistors and sandwiching a light emitting member.

Pixel, display device having the same, and thin film transistor (TFT) substrate for display device

A pixel, a display device having the same, and a thin film transistor (TFT) substrate for the display device are disclosed. In one aspect, the pixel includes an emitter configured to emit light based at least in part on a driving current. The pixel also includes a driving transistor including an active layer, a first electrode electrically connected to a first end portion of the active layer, a second electrode electrically connected to a second end portion of the active layer, a first gate electrode configured to receive a data voltage from a data driver so as to form a channel in the active layer, and a second gate electrode configured to receive a bias voltage from a voltage source, wherein the channel is configured to adjust the driving current.

Display apparatus

A display apparatus includes a plurality of pixels. At least one of the pixels includes a gate line, a data line, a first storage line spaced apart from the gate line, a second storage line spaced apart from the gate line and the first storage line, first and second switching devices electrically connected to the gate line and the data line, a first liquid crystal capacitor connected to the first switching device and including the liquid crystal layer as its dielectric substance, a second liquid crystal capacitor connected to the second switching device and including the liquid crystal layer as its dielectric substance, a first storage capacitor connected between the first switching device and one of the first and second storage lines, and a second storage capacitor connected between the second switching device and a remaining one of the first and second storage lines.

LIGHT EMISSION DRIVING CIRCUIT, SCAN DRIVING CIRCUIT AND DISPLAY DEVICE INCLUDING SAME

A light emission driving circuit includes a driving circuit configured to output a light emission driving signal to a first output terminal and output a switching signal to a first node in response to clock signals and a first carry signal, and a first masking circuit configured to output a second carry signal to a second output terminal in response to a masking clock signal, the light emission driving signal, and the first switching signal. The masking clock signal is a signal which is maintained at a first level during a normal mode and periodically changes during a low power mode.

Display Device and Driving Method Thereof

A display device and a method of driving the display device are provided. The threshold voltage of a driving transistor is compensated such that even when the threshold voltage of the driving transistor is varied, the emission of light with respect to a predetermined data voltage occurs with a predetermined luminance, based on a diode-connected compensation transistor and a plurality of switching transistors.

Light sensitive circuit, light sensing panel having the light sensitive circuit and display apparatus having the light sensing panel

A light sensitive circuit includes a light sensing capacitor and a driving transistor. The light sensing capacitor is configured to sense light of a predetermined one or more wavelengths. The driving transistor includes a gate electrode electrically connected to the light sensing capacitor and is configured to generate a light sensing current according to a voltage of the gate electrode in the driving transistor. A light sensing accuracy and a light sensing signal to noise ratio (SNR) of the display apparatus including a plurality of such light sensing capacitors may be improved relative to ones that do not include such light sensing capacitors.

Display device

A display device includes a display panel including a plurality of pixels respectively connected to a plurality of data lines and a plurality of scan lines, a data driving circuit for driving the plurality of data lines, a scan driving circuit for driving the plurality of scan lines, and a driving controller for receiving a control signal and an image signal and controlling the data driving circuit and the scan driving circuit such that an image is displayed on the display panel. The driving controller identifies a first region and a second region of an image to be displayed on the display panel based on the image signal and provides the data driving circuit with an image data signal obtained by compensating for the image signal to be provided to pixels adjacent to the second region among pixels corresponding to the first region as a compensation value.

DISPLAY DEVICE AND DRIVING CIRCUIT THEREOF

A display device and a driving circuit thereof are disclosed. In one aspect, the display device includes a display panel, a gamma reference voltage generator, a data driver and a driving controller. The display panel includes a plurality of pixels, each pixel including first and second sub-pixels. The gamma reference voltage generator generates one or more first gamma reference voltages each having a high gamma value greater than a reference gamma value, and one or more second gamma reference voltages each having a low gamma value less than the reference gamma value. The data driver generates a data voltage based at least in part on one or more of the first and second gamma reference voltages, and provides the data voltage to the first and second sub-pixels. The driving controller determines a gamma value and a data voltage output pattern according to a driving method of the display panel. 1. A display device , comprising:a display panel including a plurality of pixels, wherein each pixel includes first and second sub-pixels;a gamma reference voltage generator configured to generate at least one first gamma reference voltage each having a high gamma value greater than a reference gamma value, and at least one second gamma reference voltage each having a low gamma value less than the reference gamma value;a data driver configured to i) generate a data voltage based at least in part on one or more of the first and second gamma reference voltages and ii) provide the data voltage to the first and second sub-pixels; anda driving controller configured to determine a gamma value and a data voltage output pattern according to a driving mechanism of the display panel.2. The display device of claim 1 , wherein the gamma reference voltage generator includes a first gamma reference voltage generator configured to generate the first gamma reference voltage based at least in part on a first driving voltage claim 1 , and a second gamma reference voltage generator configured to ...

Method of driving display device

A method of driving a display device includes displaying an image corresponding to a left eye image signal during a first frame set including one or more frames and displaying an image corresponding to a right eye image signal during a second frame set including one or more successive frames, in which the first frame set and the second frame set include at least one frame displaying a first image according to a first gamma curve and at least one frame displaying a second image according to a second gamma curve, and the first frame set and the second frame set include two successive frames displaying the second image.

Display apparatus and method of operating the same

A display apparatus may include a display timing controller and a display panel. The display timing controller generates first output image data based on first input image data and a first gamma function, and generates second output image data based on second input image data and a second gamma function. The display panel operates based on the first output image data during a first duration, and operates based on the second output image data during a second duration subsequent to the first duration. The first and second gamma functions correspond to a first region of the display panel, and a luminance of an image based on the first gamma function is different from a luminance of an image based on the second gamma function.

Display apparatus and liquid crystal display apparatus

A display apparatus includes: a panel including a plurality of pixels configured to display an image; an ambient light sensor configured to sense an illumination level of ambient light and to generate ambient light data; a gamma controller configured to control sections of a reference gamma curve based on the ambient light data to generate a controlled gamma curve, the controlled gamma curve defining output data according to input data; a data driver configured to convert an image signal into a data voltage based on the controlled gamma curve and to supply the data voltage to the pixels; and a gate driver configured to supply a gate signal to the pixels.

DISPLAY DEVICE

A display device includes a display panel including a plurality of pixels respectively connected to a plurality of data lines and a plurality of scan lines, a data driving circuit for driving the plurality of data lines, a scan driving circuit for driving the plurality of scan lines, and a driving controller for receiving a control signal and an image signal and controlling the data driving circuit and the scan driving circuit such that an image is displayed on the display panel. The driving controller identifies a first region and a second region of an image to be displayed on the display panel based on the image signal and provides the data driving circuit with an image data signal obtained by compensating for the image signal to be provided to pixels adjacent to the second region among pixels corresponding to the first region as a compensation value.

Method of driving display panel and display apparatus for performing the same

A method of driving a display panel includes generating a high data voltage having a high gamma corresponding to a grayscale of input image data, generating a low data voltage having a low gamma less than the high gamma corresponding to the grayscale of the input image data and outputting the high data voltage and the low data voltage to pixels of a display panel. Of the high data voltage and the low data voltage, only the low data voltage is outputted to the pixels of the display panel during at least one frame.

Display apparatus

A display apparatus includes a plurality of pixels arranged in columns and rows in a display area, a data line extending in a first direction and connected with pixels of a k-th column (‘k’ is a natural number) and a (k+1)-th column, a gate line extending in a second direction crossing the first direction and connected with ones of the pixels, a gate signal line extending in the first direction and connected with the gate line, and a gate driver in a first peripheral area adjacent to a first longer side of the display area and having a first width, and configured to apply a gate signal to the gate line.

Light sensitive circuit, light sensing panel having the light sensitive circuit and display apparatus having the light sensing panel

A light sensitive circuit includes a light sensing capacitor and a driving transistor. The light sensing capacitor is configured to sense light of a predetermined one or more wavelengths. The driving transistor includes a gate electrode electrically connected to the light sensing capacitor and is configured to generate a light sensing current according to a voltage of the gate electrode in the driving transistor. A light sensing accuracy and a light sensing signal to noise ratio (SNR) of the display apparatus including a plurality of such light sensing capacitors may be improved relative to ones that do not include such light sensing capacitors.

ELECTROLUMINESCENT DISPLAY AND METHOD OF DRIVING THE SAME

An electroluminescent display and a method of driving the same are disclosed. In one aspect, the display includes a display panel including a plurality of pixels configured to operate based on a first power supply voltage having a negative voltage level. The display panel is configured to generate at least one feedback voltage corresponding to an ohmic drop of the first power supply voltage. An analog-to-digital converter is configured to generate at least one digital feedback signal based on the at least one feedback voltage. An adaptive voltage controller is configured to generate a voltage control signal based on input image data, the at least one digital feedback signal, a distribution of the input image data and the ohmic drop of the first power supply voltage. A voltage converter is configured to generate the first power supply voltage based on an input voltage and the voltage control signal. 1. An electroluminescent display comprising:a display panel including a plurality of pixels configured to operate based on a first power supply voltage having a negative voltage level, wherein the display panel is configured to generate at least one feedback voltage corresponding to an ohmic drop of the first power supply voltage;an analog-to-digital converter configured to generate at least one digital feedback signal based on the at least one feedback voltage;an adaptive voltage controller configured to generate a voltage control signal based on input image data, the at least one digital feedback signal, a distribution of the input image data and the ohmic drop of the first power supply voltage; anda voltage converter configured to generate the first power supply voltage based on an input voltage and the voltage control signal.2. The electroluminescent display of claim 1 , wherein the adaptive voltage controller is further configured to adjust the voltage control signal so as to maintain the first power supply voltage at a target voltage claim 1 , wherein the target ...

MOTHER SUBSTRATE FOR USE IN PRODUCTION OF A LIQUID CRYSTAL DISPLAY PANEL, MANUFACTURING METHOD THEREOF AND DISPLAY PANEL

A mother substrate for a liquid crystal display panel includes a plurality of antistatic circuits connected with driving signal lines, respectively, and a plurality of switching circuits interposed between adjacent antistatic circuits of the antistatic circuits, respectively. Each switching circuit is controllable to electrically interconnect the adjacent antistatic circuits to one another when an inspection of a post-production available area is performed, and to electrically isolate the adjacent antistatic circuits from one another when a normal operation of the post-production available area is performed.

Display Device and Driving Method Thereof

A display device and a method of driving the same, win which the display device includes a light emitting element and a driving transistor supplying a driving current to the light emitting element, and in which one of a data voltage or a reverse bias voltage is applied to the driving transistor in an alternating manner, and the reverse bias voltage is an AC voltage.

Display device

A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel.

Organic light-emitting substrate, method of manufacturing the same, and organic light-emitting display device having the same

An organic light-emitting substrate includes a base substrate, a gate line, a data line, a bias line, an organic light-emitting diode, a switching transistor, a driving transistor and a repair line. The bias line is spaced apart from the gate line and the data line. The organic light-emitting diode includes a pixel electrode, a common electrode and an organic light-emitting part. The switching transistor is connected to the gate line and the data line. The driving transistor is connected to the bias line, the pixel electrode and the switching transistor. The repair line is formed from a pixel metal layer that is identical to the pixel electrode to be spaced apart from the pixel electrode, and is formed along the first direction to be overlapped with the gate line. Therefore, the repair line may repair electric defects of the gate line.

Electroluminescent display and method of driving the same

An electroluminescent display and a method of driving the same are disclosed. In one aspect, the display includes a display panel including a plurality of pixel units electrically connected to a plurality of data lines and a plurality of gate lines. The pixel units are arranged in a matrix of a plurality of rows and a plurality of columns, the pixel units in the same column are connected to the same data line, and the pixel units in the same diagonal line of the matrix are connected to the same gate line. The display also includes a data driver located at a first side of the display panel, the data driver being configured to drive the data lines, and a gate driver located at the first side of the display panel and configured to drive the gate lines.

Pixel circuit

A pixel circuit includes a main-circuit that controls an organic light-emitting element by controlling a driving current to flow into the organic light-emitting element and a sub-circuit including a first compensation transistor including a gate terminal which receives a first gate signal, a second compensation transistor including a gate terminal which receives a second gate signal, and an initialization transistor including a gate terminal which receives an initialization signal. Here, in a low-frequency driving mode, a driving frequency of the first gate signal is N hertz (Hz), a driving frequency of the initialization signal is N Hz, a driving frequency of the second gate signal is M Hz, the first compensation transistor and the initialization transistor are turned on during a first time duration in N non-light-emitting periods per second, and the second compensation transistor is turned on during a second time duration in M non-light-emitting periods per second.

Display device

A display device includes: a display panel, which displays an image; a panel driver, which drives the display panel; and a driving controller, which controls a drive of the panel driver. The driving controller includes a compensation determination block and a data compensation block. The compensation determination block is activated after a still image is displayed for a predetermined time or more and generates a compensation value based on a final afterimage component calculated using an afterimage algorithm obtained by a combination of a first afterimage calculation equation and a second afterimage calculation equation. The data compensation block receives an image signal with respect to a target image and reflects the compensation value to the image signal to generate a compensation image signal.

VERTICAL ALIGNMENT DISPLAY DEVICE WITH ENHANCED CONTRAST

A vertical alignment liquid crystal display includes two sub-pixels each with a variable capacitor. A pixel is bisected into a high gray sub-pixel and a low gray sub-pixel through forming a variable capacitor at each sub-pixel. With this structure, the sub-pixels express different grays so that lateral visibility is enhanced. It is not required in bisecting a pixel into two sub-pixels to form separate wires for applying different signals thereto, and the amount of data to be processed at the driver for driving the display device is reduced. Furthermore, a pixel is bisected into two sub-pixels with variable capacitors in a simplified manner, and it is not required to form additional wires and elements, so the aperture ratio is enhanced.

ORGANIC LIGHT-EMITTING DISPLAY PANEL AND METHOD OF MANUFACTURING THE SAME

An organic light-emitting display panel having a storage capacitor comprised of a storage electrode overlapping a power line with a first gate-insulating layer disposed therebetween, wherein the storage capacitor includes a groove portion formed on a lateral side of the power line overlapping the storage electrode so that the overlapping area of the power line and the storage electrode is kept constant, and a method of manufacturing the same.

ELECTROLUMINESCENT DISPLAY AND METHOD OF DRIVING THE SAME

An electroluminescent display and a method of driving the same are disclosed. In one aspect, the display includes a display panel including a plurality of pixel units electrically connected to a plurality of data lines and a plurality of gate lines. The pixel units are arranged in a matrix of a plurality of rows and a plurality of columns, the pixel units in the same column are connected to the same data line, and the pixel units in the same diagonal line of the matrix are connected to the same gate line. The display also includes a data driver located at a first side of the display panel, the data driver being configured to drive the data lines, and a gate driver located at the first side of the display panel and configured to drive the gate lines. 1. An electroluminescent display comprising:a display panel including a plurality of pixel units electrically connected to a plurality of data lines and a plurality of gate lines, wherein the pixel units are arranged in a matrix of a plurality of rows and a plurality of columns, wherein the pixel units in the same column are connected to the same data line, and wherein the pixel units in the same diagonal line of the matrix are connected to the same gate line;a data driver located at a first side of the display panel, wherein the data driver is configured to drive the data lines; anda gate driver located at the first side of the display panel and configured to drive the gate lines.2. The electroluminescent display of claim 1 , wherein the rows include m rows claim 1 , wherein the columns include n columns where m is a positive integer and n is a positive integer greater than m claim 1 , andwherein the pixel units in the (i)-th row and in the (j)-th column are electrically connected to the (i+j−1)-th gate line where i is a positive integer equal to or less than m, and j is a positive integer equal to or less than n.3. The electroluminescent display of claim 2 , wherein the gate lines include an (n)-th gate line and an (m+ ...

Display apparatus and method of driving the same

A display apparatus includes a mode determiner configured to compare image signals of a previous frame and a current frame and to determine an image mode of the current frame, a sync signal generator configured to generate a panel sync signal with a low frequency corresponding to the image mode using an original sync signal with a normal frequency, the low frequency being a non-divisor frequency of the normal frequency and lower than the normal frequency, a data driver configured to drive a data line of a display panel using a data sync signal based on the panel sync signal with the low frequency, and a gate driver configured to drive a gate line of the display panel using a gate sync signal based on the panel sync signal with the low frequency.

Pixel and organic light emitting display including the same

Provided is a pixel including an organic light emitting diode, a driving circuit, and a light receiving circuit. The driving circuit is configured to supply a driving current corresponding to a data signal supplied through a data line during a scan period to the organic light emitting diode during an emission period, and to supply a first sensing current corresponding to threshold voltage/mobility information of a driving transistor or degradation information of the organic light emitting diode to a feedback line during a current sensing period. The light receiving circuit is configured to supply a second sensing current corresponding to luminance of the organic light emitting diode to the feedback line during the emission period.

DISPLAY APPARATUS AND ELECTRONIC SYSTEM INCLUDING THE SAME

A display apparatus includes a display panel and a timing controller The timing controller generates first output image data based on input image data and sets a driving frequency of the display panel as a first frequency in a first operation mode. The timing controller converts the input image data into second output image data and sets the driving frequency of the display panel as a second frequency lower than the first frequency in a second operation mode. The display panel displays a first image based on the first frequency and the first output image data in the first operation mode. The first image is represented by X grayscales. The display panel displays a second image based on the second frequency and the second output image data in the second operation mode. The second image is represented by Y grayscales, where Y is less than X. 1. A display apparatus comprising:a display panel; anda timing controller configured to, in a first operation mode, generate first output image data based on input image data and set a driving frequency of the display panel as a first frequency,the timing controller configured to, in a second operation mode, convert the input image data into second output image data and set the driving frequency of the display panel as a second frequency lower than the first frequency,wherein, in the second operation mode, the display panel displays the second output image data based on a frame masking driving (FMD) scheme where at least one of frames of the input image data are blocked from the display.2. The display apparatus of claim 1 , wherein every second frame of the input image data is blocked in the second operation mode claim 1 , andwherein the driving frequency of the display panel is set to be a reciprocal of a period of two successive image frames in the second operation mode.3. The display apparatus of claim 1 , wherein every second and third frame of the input image data are blocked in the second operation mode claim 1 , andwherein ...

Display apparatus having a reduced-width bezel and method of manufacturing the same

A display apparatus includes a display panel and a display panel driver. The display panel includes a lower substrate and an upper substrate facing the lower substrate. The lower substrate includes a first base substrate and a flexible substrate. The flexible substrate has an area larger than an area of the first base substrate. The display panel driver includes a gate driver configured to apply a gate signal to a gate line of the display panel and a data driver configured to apply a data voltage to a data line of the display panel.

Display device and driving method thereof

A display device includes a light emitting element connected to a common voltage, a driving transistor having a control terminal, an output terminal connected to the light emitting element, and an input terminal connected to a driving voltage, a first capacitor connected to the control terminal of the driving transistor, and a first switching transistor configured to transmit a data signal to the first capacitor. A first voltage is applied to the control terminal of the driving transistor, and a second voltage different from the first voltage and the driving voltage is applied to the output terminal of the driving transistor.

Display device

A display device which includes a substrate, a gate line formed on the substrate, a data line intersecting the gate line, and a thin film transistor having a gate electrode connected to the gate line, a source electrode which overlaps the gate electrode and is connected to the data line, and a drain electrode which overlaps the gate electrode. The overlapping area between the gate electrode and the drain electrode is larger than the overlapping area between the gate electrode and the source electrode.

Display device and a driving method thereof

A display device and a driving method thereof are provided. The display device comprises a plurality of pixels, each pixel includes: a light emitting element; a storage capacitor; a driving transistor that has a control terminal, an input terminal, and an output terminal and supplies a current to the light emitting element to emit light; a first switching transistor for supplying a data voltage to the storage capacitor in response to a scanning signal; a second switching transistor for diode-connecting the driving transistor in response to a previous scanning signal; and a third switching transistor for supplying a driving voltage to the driving transistor in response to an emission signal, wherein the storage capacitor stores a control voltage depending on a threshold voltage of the driving transistor and a threshold voltage of the light emitting element through the diode-connected driving transistor, and transmits the control voltage and the data voltage to the control terminal of the ...

Display substrate and method of manufacturing the same

A display substrate includes a driving element, a switching element, a gate line, a data line, a driving voltage line and an electroluminescent element. The driving element includes a driving control electrode formed from a first conductive layer, and a driving input electrode and a driving output electrode formed from a second conductive layer. The switching element includes a switching control electrode formed from the second conductive layer, and a switching input electrode and a switching output electrode formed from a third conductive layer. The gate and data lines are formed from the second and third conductive layers, respectively. The driving voltage line is formed from the third conductive layer. Thus, misalignment between upper and lower patterns may be prevented to improve the reliability of a manufacturing process and increase an aperture ratio, thereby enhancing display quality.

Method of driving display panel and display apparatus for performing the same

A method of driving a display panel is disclosed. In one aspect, the display panel includes a plurality of pixels arranged in odd and even rows and a plurality of odd and even gate lines respectively connected to the pixels of the corresponding odd and even rows. The method includes outputting odd gate signals to the odd numbered gate lines during two consecutive subframes and outputting even gate signals to the even numbered gate lines during two consecutive subframes. A frame is divided into two subframes.

DISPLAY DEVICE AND DRIVING METHOD THEREOF

A display device includes a memory which stores gamma data for gamma curves including a first gamma curve and a second gamma curve; a gray voltage generator which generates gray voltages based on the gamma data; a data driver which receives an input image signal from a signal controller and converts the input image signal into a data voltage using the gray voltages; and a display panel including pixels which receives the data voltage and may display an image, where the pixel displays images corresponding to the input image signal during one frame set, one frame set includes consecutive frames, the images displayed by a pixel includes first and second images displayed based on the first and second gamma curves, respectively, a luminance of the first image is not less than a luminance of the second image, and the second image is displayed in two consecutive frames. 1. A display device comprising:a memory which stores gamma data corresponding to a plurality of gamma curves including a first gamma curve and a second gamma curve;a gray voltage generator which generates a plurality of gray voltages based on the gamma data;a signal controller which receives an input image signal;a data driver which receives the input image signal from the signal controller and converts the input image signal into a data voltage using the gray voltages; anda display panel comprising a plurality of pixels which receives the data voltage and displays an image on a frame-by-frame basis,whereina pixel of the pixels displays a plurality of images corresponding to the input image signal during one frame set,the one frame set includes a plurality of consecutive frames,the images displayed by the pixel during the one frame set includes a first image displayed based on the first gamma curve and a second image displayed based on the second gamma curve,a luminance of the first image is equal to or greater than a luminance of the second image, andthe second image is displayed in two consecutive frames. ...

Display device

The invention provides a display device including an insulating substrate, a photosensor formed on the insulating substrate and including a semiconductor layer, an input terminal and an output terminal electrically connected to the semiconductor layer, a first insulating layer formed on the photosensor, a pixel electrode, an organic layer, and a common electrode layer sequentially formed on the first insulating layer, and a controller that controls an input to the pixel electrode based on an output of the photosensor.

Gamma applied data generating circuit and display device including the same

Gamma applied data generating circuit includes motion vector extractor, gamma pattern generator, first gamma applier, second gamma applier, and output converter. Motion vector extractor extracts motion vector of object. Gamma pattern generator generates first gamma pattern corresponding to first motion vector value and second gamma pattern corresponding to second motion vector value from first time point. Value of motion vector is changed from first motion vector value to second motion vector value at first time point. First and second gamma appliers generate first and second data by applying first and second gamma pattern to input data, respectively. Output converter outputs sum of first data times first weight and second data times second weight as gamma applied data. From first time point to second time point, output converter converts first weight from 1 to 0 and converts second weight from 0 to 1.

Display panel and display panel device including the transistor connected to storage capacitor

An approach of a circuit configuration is provided for operating a display panel and a liquid crystal display with high aperture ratio, transmittance and visibility, the circuit configuration includes: a gate line; a data line intersecting the gate line; a first transistor connected to the gate line and the data line; a second transistor connected to the gate line and the data line; a storage electrode line separated from the gate line; a third transistor connected to the storage electrode line and the second transistor; a first pixel electrode connected to the first transistor; and a second pixel electrode connected to the second transistor and the third transistor. The third transistor being separated from an additional gate line is connected to the storage electrode line such that the aperture ratio can be increased, and visibility and transmittance can be enhanced.

Circuit and method for driving organic light emitting diode

A drive circuit for organic light emitting diodes (OLEDs), and a method for driving OLEDs, using the drive circuit. The drive circuit includes pixel circuits, each of which includes a first transistor for receiving a data voltage, and outputting a drive current to an OLED, a second transistor for transmitting the data voltage to the first transistor, a third transistor for connecting the gate and drain of the first transistor, a capacitor for storing a gate voltage of the first transistor, and a fourth transistor connected to the drain of the first transistor. The OLED is connected to the source of the first transistor by a fifth transistor, or is directly connected to the source of the first transistor without using the fifth transistor. The drive circuit generates drive current, based on a non-uniformity-compensated threshold voltage of the first transistor, thereby obtaining a uniform luminance of the OLED.

Pixel circuit

A pixel circuit includes: a main circuit including: a driving transistor that includes a gate terminal connected to a first node, a first terminal connected to a second node, and a second terminal connected to a third node; and an organic light-emitting element connected to the driving transistor and configured to control the organic light-emitting element by controlling a driving current corresponding to a data signal applied via a data line to flow into the organic light-emitting element; and a sub circuit including: a first compensation transistor that includes a gate terminal configured to receive a first gate signal, a first terminal connected to the first node, and a second terminal connected to a fourth node; and a second compensation transistor that includes a gate terminal configured to receive a second gate signal, a first terminal connected to the fourth node, and a second terminal connected to the third node.

Display apparatus and method for driving the same

A display apparatus includes a display panel and a first gate driver. The display panel includes a plurality of data lines extending in a first direction, and a plurality of gate lines extending in a second direction obliquely inclined toward the first direction and spaced apart from each other in a third direction crossing the second direction. The plurality of gate lines includes a first gate line group and a second gate line group respectively disposed in first and second display areas of the display panel. The first gate driver is configured to drive at least one gate line of the second gate line group while driving at least one gate line of the first gate line group.

Display device and driving method thereof

A display device is provided, which includes: a plurality of pixels, each pixel including a light emitting element; a signal controller modifying the input image signals based on an accumulated time of driving the light emitting elements; and a data driver generating data signals based on the modified image signals and supplying the data signals to the pixels.

Thin-film transistor display panel and liquid crystal display including the same

Provided are a thin-film transistor (TFT) display panel in which grayscale inversion at sides of the TFT display panel is controlled to improve color at sides thereof due to the shifting of chromaticity coordinates, and a liquid crystal display (LCD) including the TFT display panel. The TFT display panel includes a first pixel electrode corresponding to a first pixel, a second pixel electrode corresponding to a second pixel, and a third pixel electrode corresponding to a third pixel, wherein each of the first through third pixel electrodes includes a first subpixel electrode and a second subpixel electrode which receive different data voltages from the data lines, and saw-toothed fine patterns are formed on oblique edges of the first subpixel electrode of the first pixel electrode. 1. A thin-film transistor (TFT) display panel comprising:a first substrate;a plurality of gate lines formed on the first substrate and extending in a first direction;a plurality of data lines intersecting the gate lines and extending in a second direction;a plurality of pixel regions defined by the gate lines and the data lines; anda plurality of pixel electrodes formed in the pixel regions and comprising a first pixel electrode corresponding to a first pixel, a second pixel electrode corresponding to a second pixel, and a third pixel electrode corresponding to a third pixel,wherein each of the first through third pixel electrodes comprises a first subpixel electrode and a second subpixel electrode which receive different data voltages from the data lines, and saw-toothed fine patterns are formed on oblique edges of the first subpixel electrode of the first pixel electrode.2. The TFT display panel of claim 1 , wherein the first pixel is blue.3. The TFT display panel of claim 1 , wherein the second pixel is red or green.4. The TFT display panel of claim 1 , wherein the fine patterns comprise a plurality of protrusions extending perpendicularly from each oblique edge of the first pixel ...

Thin film transistor array panel and method for manufacturing the same

A thin film transistor array panel according to an exemplary embodiment of the present invention comprises a substrate; a first signal line and a second signal line disposed on the substrate; a switching thin film transistor connected to the first signal line and the second signal line, and comprising a first insulating layer; a driving thin film transistor connected to the switching thin film transistor and comprising a second insulating layer; and a discharge thin film transistor connected to one of the first signal line and the second signal line, and comprising the first insulating layer and the second insulating layer.

Liquid crystal display having wide viewing angle

A liquid crystal display includes first and second sub-pixels charged with the same voltage during a first period. The voltage charged in the second sub-pixel is decreased after the first period. Since the voltage level of the first sub-pixel is different from the voltage level of the second sub-pixel after the first period, liquid crystal molecules disposed corresponding to the first sub-pixel are aligned in a direction different from that of liquid crystal molecules disposed corresponding to the second sub-pixel. Thus, a side viewing angle of the liquid crystal display is improved.

Display device and method of manufacturing the same

A display device and a method of manufacturing the display device are provided. The display device includes a substrate; a driving voltage line disposed on the substrate; a driving voltage line pad to transmit a driving voltage to the driving voltage line; a driving transistor connected to the driving voltage line; a pixel electrode connected to the driving transistor; a common electrode opposing the pixel electrode; a light emitting member disposed between the pixel electrode and the common electrode; and a common electrode pad disposed on the substrate so as to transmit a common voltage to the common electrode. The common electrode pad and the driving voltage line pad are exposed at a side surface of the substrate.

METHOD OF DRIVING DISPLAY PANEL AND DISPLAY APPARATUS FOR PERFORMING THE SAME

A method of driving a display panel is disclosed. In one aspect, the display panel includes a plurality of pixels arranged in odd and even rows and a plurality of odd and even gate lines respectively connected to the pixels of the corresponding odd and even rows. The method includes outputting odd gate signals to the odd numbered gate lines during two consecutive subframes and outputting even gate signals to the even numbered gate lines during two consecutive subframes. A frame is divided into two subframes.

Display apparatus with frame masking driving scheme and electronic system including the same

A display apparatus includes a display panel and a timing controller. The timing controller generates first output image data based on input image data and sets a driving frequency of the display panel as a first frequency in a first operation mode. The timing controller converts the input image data into second output image data and sets the driving frequency of the display panel as a second frequency lower than the first frequency in a second operation mode. The display panel displays a first image based on the first frequency and the first output image data in the first operation mode. The first image is represented by X grayscales. The display panel displays a second image based on the second frequency and the second output image data in the second operation mode. The second image is represented by Y grayscales, where Y is less than X.

Display panel and method of driving the same

A display panel includes: a first pixel including: a first high pixel configured to represent a first high gray level; and a first low pixel configured to represent a first low gray level; and a second pixel adjacent the first pixel in a first direction, the second pixel including: a second high pixel configured to represent a second high gray level based on a second data voltage and the common voltage in response to the first gate signal; and a second low pixel configured to represent a second low gray level based on the second data voltage, the common voltage, and a second divided voltage different from the first divided voltage in response to the first gate signal.

DISPLAY APPARATUS AND LIQUID CRYSTAL DISPLAY APPARATUS

A display apparatus includes: a panel including a plurality of pixels configured to display an image; an ambient light sensor configured to sense an illumination level of ambient light and to generate ambient light data; a gamma controller configured to control sections of a reference gamma curve based on the ambient light data to generate a controlled gamma curve, the controlled gamma curve defining output data according to input data; a data driver configured to convert an image signal into a data voltage based on the controlled gamma curve and to supply the data voltage to the pixels; and a gate driver configured to supply a gate signal to the pixels. 1. A display apparatus comprising:a panel comprising a plurality of pixels configured to display an image;an ambient light sensor configured to sense an illumination level of ambient light and to generate ambient light data;a gamma controller configured to control sections of a reference gamma curve based on the ambient light data to generate a controlled gamma curve, the controlled gamma curve defining output data according to input data;a data driver configured to convert an image signal into a data voltage based on the controlled gamma curve and to supply the data voltage to the pixels; anda gate driver configured to supply a gate signal to the pixels.2. The display apparatus of claim 1 , wherein the sections of the reference gamma curve are defined such that a color gamut ratio of the panel under an environment having a same illumination level as the ambient light with respect to the input data is lower by certain values than a color gamut ratio of the panel under a darkroom environment.3. The display apparatus of claim 1 , wherein the sections of the reference gamma curve are defined according to the illumination level of the ambient light.4. The display apparatus of claim 1 , wherein the sections of the reference gamma curve are between a first input value and a second input value larger than the first input ...

Liquid crystal display and manufacturing method thereof

Provided is a liquid crystal display. The liquid crystal display includes: a substrate; a gate line, a common electrode line and a data line formed on the substrate; an insulating layer formed on the gate line, the common electrode line and the data line; a pixel electrode formed on the insulating layer; a microcavity formed on the pixel electrode and including a liquid crystal injection hole; a common electrode formed on the microcavity; a support member formed on the common electrode; and a capping layer formed on the support member and covering the liquid crystal injection hole, in which the common electrode line and the common electrode are connected to each other through a contact hole formed in a passivation layer.

Display device having security function

Display device includes timing controller, display panel, data driver, and scan driver. The timing controller includes an authentication processing unit configured to generate an authentication result based on an authentication control signal. The timing controller converts an input image data signal to data driver control signal and scan driver control signal when the authentication result represents success. The timing controller deactivates the data driver control signal and the scan driver control signal when the authentication result represents fail. The display panel includes plurality of pixels. The data driver generates plurality of data signals based on the data driver control signal and provides the data signals to the pixels through plurality of data signal lines. The scan driver generates plurality of scan signals based on the scan driver control signal and provides the scan signals to the pixels through plurality of scan signals lines.

Circuit and method for driving organic light emitting diode

A drive circuit for organic light emitting diodes (OLEDs), and a method for driving OLEDs, using the drive circuit. The drive circuit includes pixel circuits, each of which includes a first transistor for receiving a data voltage, and outputting a drive current to an OLED, a second transistor for transmitting the data voltage to the first transistor, a third transistor for connecting the gate and drain of the first transistor, a capacitor for storing a gate voltage of the first transistor, and a fourth transistor connected to the drain of the first transistor. The OLED is connected to the source of the first transistor by a fifth transistor, or is directly connected to the source of the first transistor without using the fifth transistor. The drive circuit generates drive current, based on a non-uniformity-compensated threshold voltage of the first transistor, thereby obtaining a uniform luminance of the OLED.

Light emission driving circuit, scan driving circuit and display device including same

A light emission driving circuit includes a driving circuit configured to output a light emission driving signal to a first output terminal and output a switching signal to a first node in response to clock signals and a first carry signal, and a first masking circuit configured to output a second carry signal to a second output terminal in response to a masking clock signal, the light emission driving signal, and the switching signal. The masking clock signal is a signal which is maintained at a first level during a normal mode and periodically changes during a low power mode.

Display device having power management block

A display device includes: a first partial emission driver configured to provide first emission control signals to a first partial panel area of the display panel, and a second partial emission driver configured to provide second emission control signals to a second partial panel area of the display panel; and a power management block configured to: provide a first voltage and a second voltage to the emission driver, in response to the first partial emission driver generating the first emission control signals; and provide a third voltage and a fourth voltage to the emission driver in response to the second partial emission driver generating the second emission control signals; and an emission control block configured to receive the first voltage and the second voltage from the power management block and to provide a first clock signal and a second clock signal to the emission driver.

Liquid crystal display, method of driving the same, and method of manufacturing the same

A liquid crystal display includes a plurality of pixels. Each pixel of the plurality of pixels includes a gate line which receives a gate signal; a data line which receives a data voltage; a first sub-pixel including a first transistor connected to the gate line and the data line, wherein the first transistor outputs the data voltage in response to the gate signal; and a first liquid crystal capacitor connected to the first transistor. Each pixel further includes a second sub-pixel including a second transistor connected to the gate line and the data line, wherein the second transistor outputs the data voltage in response to the gate signal; and a second liquid crystal capacitor connected to the second transistor; a resistor connected to the second transistor; and a first sharing capacitor connected to the resistor, wherein the first sharing capacitor receives the data voltage through the resistor.

DISPLAY DEVICE AND PROCESSING METHOD OF IMAGE SIGNAL THEREOF

A image signal processing method of a liquid crystal display according to an exemplary embodiment of the present invention includes: receiving a previous image signal and a current image signal as two sequential input image signals; performing a first correction (DCC) and a doubling for the current image signal to generate a correction image signal comprising a plurality of doubled frames for the current image signal; and post-processing the portion of the plurality of doubled frames to generate a final correction image signal. 1. A method of processing an image signal of a liquid crystal display , comprising:receiving a previous image signal and a current image signal as two sequential input image signals;performing a first correction dynamic capacitance compensation (DCC) and a doubling for the current image signal to generate a correction image signal comprising a plurality of doubled frames for the current image signal; andpost-processing a portion of the plurality of doubled frames to generate a final correction image signal.2. The method of claim 1 , wherein the generating of the correction image signal of the plurality of doubled frames comprises:doubling the current image signal or the correction image signal into the plurality of doubled frames according to a temporal gamma mixing (TGM) mode; andfirst correcting the current image signal or the doubled current image signal of the plurality of doubled frames.3. The method of claim 2 , whereina gamma curve applied to the plurality of doubled frames includes a first gamma curve and a second gamma curve,a luminance of a first image (H) of one of the doubled frames according to the first gamma curve is not lower than a luminance of a second image (L) of the one doubled frame according to the second gamma curve for an input image signal, andthe TGM mode applied to the plurality of doubled frames for two sequential input images includes an HL-LH mode and an LH-HL mode.4. The method of claim 3 , wherein the ...

DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME

A display device including a display panel which includes pixels connected to gate lines and data lines; and an image display control unit controlling an input image signal to be converted into a data signal and, thereby, display an image on the display panel. The image display control unit outputs the data signal so that a position of an image being displayed on the display panel is changed when the image signal is the same for a preselected time period and sets a next position change time period of the image according to a distance between an original position of the image and a changed position of the image. 1. A display device comprising:a display panel comprising pixels connected to gate lines and data lines; andan image display control unit configured to convert an image signal input from an external source into a data signal and drive the gate lines and the data lines so as to display an image corresponding to the data signal on the display panel,wherein the image display control unit is configured to output the data signal such that a position of the image on the display panel is changed when the input image signal is the same for a preselected period of time, and is configured to set a next position change time period of the image according to a distance between an original position of the image and a changed position of the image.2. The display device of claim 1 , wherein the image display control unit is configured to set a length of the next position change time period of the image in inverse proportion to a distance between the original position of the image and the changed position of the image.3. The display device of claim 2 , wherein:the position of the image is changed from the original position by a pixel unit; andthe image display control unit is configured to convert the image signal into a data signal configured to move the image toward left, right, top, bottom, left-top, left-right, right-top and right-bottom by k numbers of pixels (k is a ...

DISPLAY SUBSTRATE AND FABRICATING METHOD THEREOF

An exemplary embodiment of the present invention discloses a display substrate including a pixel connected to a first gate line and a data line. The pixel includes a first sub-pixel including a first liquid crystal capacitor and a first switching element including a gate electrode connected to the first gate line, a source electrode connected to the data line, and a drain electrode connected to the first liquid crystal capacitor. The pixel also includes a second sub-pixel including a second liquid crystal capacitor and a second switching element including a gate electrode connected to the first gate line, a source electrode connected to the data line, and a drain electrode connected to the second liquid crystal capacitor. The pixel further includes a controller including a control capacitor and a control switching element, the control switching element connected between a terminal of the control capacitor and the drain electrode of the second switching element. The control capacitor includes a first capacitor electrode and a second capacitor electrode. The first capacitor electrode is arranged on the same level on the display substrate as the gate electrode or is arranged on the same level on the display substrate as the source electrode and the drain electrode. The second capacitor electrode is arranged on the same level on the display substrate as a pixel electrode. 1. A display substrate , comprising:a pixel connected to a first gate line and a data line, wherein the pixel comprises:a first sub-pixel comprising a first liquid crystal capacitor and a first switching element comprising a gate electrode connected to the first gate line, a source electrode connected to the data line, and a drain electrode connected to the first liquid crystal capacitor;a second sub-pixel comprising a second liquid crystal capacitor and a second switching element comprising a gate electrode connected to the first gate line, a source electrode connected to the data line, and a drain ...

LIQUID CRYSTAL DISPLAY

A liquid crystal display includes: a first substrate having pixels, each pixel including a display area and a non-display area; a second substrate facing the first substrate and including a common electrode; and a liquid crystal layer disposed between the first substrate and the second substrate. Each pixel includes a first transistor, a second transistor, a main pixel electrode having a first connection part electrically connected to the first transistor, and a sub-pixel electrode having a second connection part electrically connected to the second transistor. The first and second connection parts are disposed in the non-display area. A protective layer is disposed between the first connection parts the first transistors and between second connection parts and the second transistors. 1. A liquid crystal display comprising:a first substrate comprising pixels;a second substrate facing the first substrate and comprising a common electrode; and a display area;', 'a non-display area;', 'a first transistor;', 'a second transistor;', 'a main pixel electrode comprising a first connection part that is electrically connected to the first transistor and is disposed in the non-display area;', 'a sub-pixel electrode comprising a second connection part that is electrically connected to the second transistor and is disposed in the non-display area; and', 'a protective layer disposed between the first connection part and the first transistor, and between the second connection part and the second transistor., 'a liquid crystal layer disposed between the first substrate and the second substrate, wherein each pixel comprises2. The liquid crystal display of claim 1 , wherein in each pixel:the protective layer covers the first and second transistors and comprises a first contact hole disposed in the non-display area to expose a portion of a drain electrode of the first transistor, and a second contact hole disposed in the non-display area to expose a portion of a drain electrode of the ...

Display apparatus

A display apparatus includes a plurality of pixels. At least one of the pixels includes a gate line, a data line, a first storage line spaced apart from the gate line, a second storage line spaced apart from the gate line and the first storage line, first and second switching devices electrically connected to the gate line and the data line, a first liquid crystal capacitor connected to the first switching device and including the liquid crystal layer as its dielectric substance, a second liquid crystal capacitor connected to the second switching device and including the liquid crystal layer as its dielectric substance, a first storage capacitor connected between the first switching device and one of the first and second storage lines, and a second storage capacitor connected between the second switching device and a remaining one of the first and second storage lines.

DISPLAY SUBSTRATE AND METHOD OF MANUFACTURING THE SAME

A display substrate includes a driving element, a switching element, a gate line, a data line, a driving voltage line and an electroluminescent element. The driving element includes a driving control electrode formed from a first conductive layer, and a driving input electrode and a driving output electrode formed from a second conductive layer. The switching element includes a switching control electrode formed from the second conductive layer, and a switching input electrode and a switching output electrode formed from a third conductive layer. The gate and data lines are formed from the second and third conductive layers, respectively. The driving voltage line is formed from the third conductive layer. Thus, misalignment between upper and lower patterns may be prevented to improve the reliability of a manufacturing process and increase an aperture ratio, thereby enhancing display quality. 1. A display substrate comprising:a driving element comprising a driving control electrode formed from a first conductive layer, and a driving input electrode and a driving output electrode that are formed from a second conductive layer and formed on the driving control electrode;a switching element comprising a switching control electrode formed from the second conductive layer, and a switching input electrode and a switching output electrode that are formed from a third conductive layer and formed on the switching control electrode;a gate line formed from the second conductive layer and connected to the switching control electrode;a data line formed from the third conductive layer and connected to the driving input electrode;a driving voltage line formed from the third conductive layer and electrically connected to the driving input electrode; andan electroluminescent element electrically connected to the driving output electrode.2. The display substrate of claim 1 , wherein the driving element comprises:a first active pattern formed on the driving control electrode, the first ...

LIGHT-SENSING APPARATUSES, METHODS OF DRIVING THE LIGHT-SENSING APPARATUSES, AND OPTICAL TOUCH SCREEN APPARATUSES INCLUDING THE LIGHT-SENSING APPARATUSES

A light-sensing apparatus in which a light sensor transistor in a light-sensing pixel is formed of an oxide semiconductor transistor for sensing light, a method of driving the light-sensing apparatus, and an optical touch screen apparatus including the light-sensing apparatus. The light-sensing apparatus includes a light-sensing pixel array having a plurality of light-sensing pixels arranged in rows and columns, and a plurality of gate lines which are arranged in a row direction and respectively provide a gate voltage to the light-sensing pixel. Each of the light-sensing pixels includes a light sensor transistor for sensing light and a switch transistor for outputting a light-sensing signal from the light sensor transistor, and gates of the light sensor transistors of the light-sensing pixels arranged in an arbitrary row are connected to a gate line arranged in a row previous or next to the arbitrary row. 1. A light-sensing apparatus , comprising:a light-sensing pixel array including a plurality of light-sensing pixels in a plurality of rows and a plurality of columns, each of the light-sensing pixels including a light sensor transistor configured to sense light and a switch transistor configured to output a light-sensing signal from the light sensor transistor; anda plurality of gate lines configured to apply a gate voltage to the light-sensing pixels, a gate of the light sensor transistor in a first row of the plurality of rows being connected to a gate line in a second row of the plurality of rows.2. The light-sensing apparatus of claim 1 , wherein each of the gate lines is connected to a plurality of the light-sensing pixels in a same row.3. The light-sensing apparatus of claim 1 , wherein each of the gates lines is connected to gates of a plurality of the switch transistors in a same row.4. The light-sensing apparatus of claim 3 , wherein the switch transistor and the light sensor transistor in each of the light-sensing pixels are connected in series.5. The ...

LIQUID CRYSTAL DISPLAY

A liquid crystal display includes first and second sub-pixels charged with the same voltage during a first period. The voltage charged in the second sub-pixel is decreased after the first period. Since the voltage level of the first sub-pixel is different from the voltage level of the second sub-pixel after the first period, liquid crystal molecules disposed corresponding to the first sub-pixel are aligned in a direction different from that of liquid crystal molecules disposed corresponding to the second sub-pixel. Thus, a side viewing angle of the liquid crystal display is improved. 1. A liquid crystal display , comprising:a gate line configured to receive a gate-on signal during a first period of a frame period;a data line crossing the gate line to receive a data voltage;a first sub-pixel connected to the gate line and the data line to receive the data voltage in response to the gate-on signal;a second sub-pixel connected to the gate line and the data line to receive the data voltage in response to the gate-on signal;a first sharing capacitor including a first electrode and a second electrode electrically connected to the first sub-pixel; anda connection part electrically connecting the first electrode of the first sharing capacitor to the second sub-pixel after the first period.2. The liquid crystal display of claim 1 , wherein the connection part is a connection resistor comprising a first material having a resistance value that decreases when exposed to a light.3. The liquid crystal display of claim 2 , wherein the connection part further comprises a second material having a same material as the data line claim 2 , wherein the second material is disposed on the first material in an island shape.4. The liquid crystal display of claim 1 , further comprising:a first reset line configured to receive a first reset signal; anda first transistor connected to the gate line and the first reset line to output the first reset signal in response to the gate-on signal.5. ...

DISPLAY DEVICE

A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel. 1. A display device comprising:a plurality of gate lines;a plurality of data lines;a plurality of first wires extending in a direction of the gate lines;a plurality of second wires extending in a direction of the data lines; anda plurality of pixels,wherein one pixel comprises a first subpixel having a first subpixel electrode and a first switching element and a second subpixel having a second subpixel electrode, a second switching element, and a third switching element,the first switching element comprises a first control terminal connected to one of the plurality of gate lines, a first input terminal connected to one of the plurality of data lines, and a first output terminal connected to the first subpixel electrode,the second switching element comprises a second control terminal connected to the same gate line as the first switching element, a second input terminal connected to the same data line as the first switching element, and a second output terminal connected to the second subpixel electrode,the third switching element comprises a third control terminal ...

VERTICAL ALIGNMENT DISPLAY DEVICE WITH ENHANCED CONTRAST

A vertical alignment liquid crystal display includes two sub-pixels each with a variable capacitor. A pixel is bisected into a high gray sub-pixel and a low gray sub-pixel through forming a variable capacitor at each sub-pixel. With this structure, the sub-pixels express different grays so that lateral visibility is enhanced. It is not required in bisecting a pixel into two sub-pixels to form separate wires for applying different signals thereto, and the amount of data to be processed at the driver for driving the display device is reduced. Furthermore, a pixel is bisected into two sub-pixels with variable capacitors in a simplified manner, and it is not required to form additional wires and elements, so the aperture ratio is enhanced. 1. A display device comprising:a plurality of gate lines;a plurality of data lines; anda pixel connected to one of the plurality of gate lines and one of the plurality of data lines, the pixel comprising first and second sub-pixels,wherein the first sub-pixel comprises:a first thin film transistor having control and input terminals connected to at least one of the gate and data lines, respectively; anda first liquid crystal capacitor and a first variable capacitor respectively connected to an output terminal of the first thin film transistor, andwherein the second sub-pixel comprises:a second thin film transistor having control and input terminals connected to at least one of the gate and data lines, respectively; anda second liquid crystal capacitor and a second variable capacitor respectively connected to an output terminal of the second thin film transistor;wherein the first and second variable capacitors have a first capacitance when a voltage applied to the gate electrode reaches or exceeds a predetermined voltage, and the first and second variable capacitors have a second capacitance when the voltage applied to the gate electrode is less than the predetermined voltage.2. The display device of claim 1 , wherein when one of the ...

TOUCH SUBSTRATE AND DISPLAY APPARATUS HAVING THE SAME

In a touch substrate and a display apparatus, the touch substrate includes a first electrode, a second electrode, a first touch electrode and a blocking layer. The first electrode includes an opaque conductive material and extends along a first direction. The second electrode includes the opaque conductive material, extends along a second direction crossing the first direction, and has a gap through which the first electrode extends. The first touch electrode is formed on the first electrode and is electrically connected to the first electrode. The blocking layer overlaps the first and second electrodes. 1. A touch substrate comprising:a first electrode including an opaque conductive material and extending along a first direction;a second electrode including the opaque conductive material, extending along a second direction crossing the first direction, the second electrode having a gap through which the first electrode extends;a first touch electrode formed on the first electrode and electrically connected to the first electrode; anda blocking layer overlapping the first and second electrodes.2. The touch substrate of claim 1 , wherein:the first electrode comprises a plurality of first main electrodes, a plurality of first connecting electrodes and a plurality of first contact holes,each of the first connecting electrodes extends along the first direction, connects adjacent ones of the first main electrodes to each other, and has a width narrower than its respective adjacent first main electrodes, andthe first main electrodes are exposed through a respective one of the first contact holes.3. The touch substrate of claim 2 , wherein the first touch electrode overlaps with one of the first main electrodes claim 2 , and the first touch electrode is electrically connected to the one of the first main electrodes through one of the first contact holes.4. The touch substrate of claim 3 , wherein an area of the first touch electrode is larger than an area of one of the ...

UNITARY DISPLAY PANNEL AND METHOD OF MANUFACTURING THE SAME

A monolithically integrated display panel is formed to include a substrate, a first electrode disposed on the substrate, a partitioning member disposed above the first electrode where the partitioning member defines a substantially containerizing volume for a to-be-introduced and then later selectively removed sacrificial member, a light attribute controlling material disposed in the containerizing volume and replacing the selectively removed sacrificial member, where an upper width of the light attribute controlling material is substantially different in dimension than a lower width of the light attribute controlling material, and a second electrode disposed above the light attribute controlling material and insulated from the first electrode. 1. A display panel comprising:a substrate;a first electrode disposed on the substrate;a partitioning member disposed on the substrate on which the first electrode is disposed, and defining a substantially containerizing-volume above the first electrode;a variable light attribute controlling material disposed in the containerizing volume defined by the partitioning member, an upper dimension of the light attribute controlling material being greater than a corresponding lower dimension of the attribute controlling material; anda second electrode disposed above the partitioning member and above the light attribute controlling material, and insulated from the first electrode.2. The display panel of claim 1 , further comprising a first insulation layer disposed between the first electrode and the light attribute controlling material.3. The display panel of claim 2 , further comprising a second insulation layer disposed between the light attribute controlling material and the second electrode.4. The display panel of claim 3 , wherein the first and second insulation layers respectively comprise respective inorganic insulating materials.5. The display panel of claim 3 , further comprising a third insulation layer disposed between the ...

Method of driving a display panel, driving apparatus for performing the method and display apparatus including the driving apparatus

A method of driving a display panel includes receiving an input image data, based on which the display panel displays an image, outputting a first image data during N frames corresponding to a first reference time and outputting a second image data during M frames corresponding to a second reference time based on a inversion signal, where N and M are natural number, the first image data has a first polarity equal to a polarity of the input image data, and the second image data has a second polarity inverted from the polarity of the input image data, and skipping a first frame of the first image data and a first frame of the second image data based on the inversion signal.

METHOD OF DRIVING DISPLAY DEVICE

A method of driving a display device includes displaying an image corresponding to a left eye image signal during a first frame set including one or more frames and displaying an image corresponding to a right eye image signal during a second frame set including one or more successive frames, in which the first frame set and the second frame set include at least one frame displaying a first image according to a first gamma curve and at least one frame displaying a second image according to a second gamma curve, and the first frame set and the second frame set include two successive frames displaying the second image. 1. A method of driving a display device including a plurality of pixels , the method comprising:displaying an image corresponding to a left eye image signal through a pixel of the plurality of pixels during a first frame set including one or more frames; anddisplaying an image corresponding to a right eye image signal through the pixel during a second frame set including one or more frames,wherein the first frame set is adjacent to the second frame set, and the first and second frame sets include at least one frame during which a first image according to a first gamma curve is displayed and at least one frame during which a second image according to a second gamma curve is displayed,wherein a luminance of the first image is not lower than a luminance of the second image, and wherein the first frame set and the second frame set include two successive frames during which the second image is displayed.2. The method of claim 1 , wherein each of the first frame set and the second frame set includes a frame during which the first image is displayed and a frame during which the second image is displayed.3. The method of claim 2 , wherein an order in which the first image and the second image are displayed during the first frame set is opposite to an order in which the first image and the second image are displayed during another first frame set.4. The method ...

LIQUID CRYSTAL DISPLAY AND MANUFACTURING METHOD THEREOF

Provided is a liquid crystal display. The liquid crystal display includes: a substrate; a gate line, a common electrode line and a data line formed on the substrate; an insulating layer formed on the gate line, the common electrode line and the data line; a pixel electrode formed on the insulating layer; a microcavity formed on the pixel electrode and including a liquid crystal injection hole; a common electrode formed on the microcavity; a support member formed on the common electrode; and a capping layer formed on the support member and covering the liquid crystal injection hole, in which the common electrode line and the common electrode are connected to each other through a contact hole formed in a passivation layer. 1. A liquid crystal display , comprising:a substrate;a gate line, a common electrode line and a data line formed on the substrate;an insulating layer formed on the gate line, the common electrode line and the data line;a pixel electrode formed on the insulating layer;a microcavity formed on the pixel electrode and including a liquid crystal injection hole;a common electrode formed on the microcavity;a support member formed on the common electrode; anda capping layer formed on the support member and covering the liquid crystal injection hole,wherein the common electrode line and the common electrode are connected to each other through a contact hole formed in a passivation layer.2. The liquid crystal display of claim 1 , wherein:the common electrode line extends parallel to the gate line.3. The liquid crystal display of claim 2 , wherein:the common electrode line is formed of a same layer as the gate line.4. The liquid crystal display of claim 3 , wherein:the microcavity contains a liquid crystal material.5. The liquid crystal display of claim 1 , wherein:the microcavity includes a plurality of regions corresponding to each pixel region, and grooves are formed between the plurality of regions of the microcavity, andthe capping layer covers the ...

DISPLAY DEVICE AND DRIVING METHOD THEREOF

A display device includes: a first switching element which transmits a first data voltage; a second switching element which transmits a second data voltage; a driving transistor connected to the first switching element and the second switching element, where the driving transistor is driven based on the first data voltage and the second data voltage; and an organic light emitting diode connected to the driving transistor, where the organic light emitting diode emits light based on an output of the driving transistor, and a driving method thereof. 1. A display device comprising:a first switching element which transmits a first data voltage;a second switching element which transmits a second data voltage;a driving transistor connected to the first switching element and the second switching element, wherein the driving transistor is driven based on the first data voltage and the second data voltage; andan organic light emitting diode connected to the driving transistor, wherein the organic light emitting diode emits light based on an output of the driving transistor.2. The display device of claim 1 , further comprising:a first gate line connected to a control terminal of the first switching element and which transmits a first gate voltage; anda second gate line connected to a control terminal of the second switching element and which transmits a second gate voltage,wherein a gate-on voltage of the first gate voltage and a gate-on voltage of the second gate voltage do not overlap each other.3. The display device of claim 2 , whereina unit frame is divided into a plurality of sub-frames, andat least one of the gate-on voltage of the first gate voltage and the gate-on voltage of the second gate voltage is applied in each sub-frame.4. The display device of claim 3 , whereineach of at least two of the sub-frames is divided into a first section and a second section, wherein the first section is defined as a section between a rising edge of the gate-on voltage of the first ...

DISPLAY PANEL

A display panel includes a gate line extending in a column direction, a data line extending in a row direction, a pixel including a switching transistor connected to the gate line and the data line, and a voltage applier connected to a gate line of a present stage. The voltage applier to apply a voltage after conversion of the gate-on voltage to a gate-off voltage has started. The voltage is closer to the gate-on voltage than the gate-off voltage. 1. A display panel , comprising:a gate line extending in a column direction;a data line extending in a row direction;a pixel including a switching transistor connected to the gate line and the data line; anda voltage applier connected to a gate line of a present stage, the voltage applier to apply a voltage after conversion of the gate-on voltage to a gate-off voltage has started, wherein the voltage is closer to the gate-on voltage than the gate-off voltage.2. The display panel as claimed in claim 1 , wherein the voltage applier includes a transistor having:a control terminal connected to a control wire to transmit a gate-off voltage applying signal,a source terminal to receive the gate-off voltage, anda drain terminal connected to the gate line of a present line.3. The display panel as claimed in claim 2 , wherein the gate-on voltage applied to the gate line of the present stage partially overlaps a gate line at a previous stage of the gate line of the present stage or a gate line at a next stage.4. The display panel as claimed in claim 2 , wherein the control wire that is to transmit the gate-off voltage applying signal includes:an odd-numbered control wire to control the voltage applier connected to an odd-numbered gate line, andan even-numbered control wire to control the voltage applier connected to an even-numbered gate line.5. The display panel as claimed in claim 2 , wherein the control wire that is to transmit the gate-off voltage applying signal includes:a first control wire,a second control wire, anda third ...

DISPLAY DEVICE AND METHOD OF DRIVING THE SAME

A display device includes a timing controller, a data driver, and a display panel. The timing controller includes a first compensator receiving a first image data, selecting a temperature compensation value in accordance with the external temperature, and converting the first image data to a second image data on the basis of the selected temperature compensation value and a second compensator selecting a kickback voltage compensation value predetermined in accordance with the areas of the display panel and converting the second image data to the output image data on the basis of the kickback voltage compensation value selected in accordance with the areas. 1. A display device comprising:a timing controller to generate output image data;a data driver to convert the output image data to a data voltage;a display panel comprising a plurality of areas to display an image in accordance with the data voltage; anda temperature sensor to sense an external temperature, a first compensator to receive first image data, to select a temperature compensation value according to the external temperature, and to convert the first image data to second image data on the basis of the selected temperature compensation value; and', 'a second compensator to select a kickback voltage compensation value according to an area from among the plurality of areas and to convert the second image data to the output image data on the basis of the selected kickback voltage compensation value., 'wherein the timing controller comprises2. The display device of claim 1 , wherein the kickback voltage compensation value comprises a first sub-kickback voltage compensation value and a second sub-kickback voltage compensation value claim 1 , and the second compensator converts the second image data to the output image data using one of the first and second sub-kickback voltage compensation values in response to a polarity signal.3. The display device of claim 2 , wherein the data driver converts the output ...

LIGHT EMISSION DRIVING CIRCUIT, SCAN DRIVING CIRCUIT AND DISPLAY DEVICE INCLUDING SAME

A light emission driving circuit includes a driving circuit configured to output a light emission driving signal to a first output terminal and output a switching signal to a first node in response to clock signals and a first carry signal, and a first masking circuit configured to output a second carry signal to a second output terminal in response to a masking clock signal, the light emission driving signal, and the first switching signal. The masking clock signal is a signal which is maintained at a first level during a normal mode and periodically changes during a low power mode. 1. A light emission driving circuit , comprising:a driving circuit configured to output a light emission driving signal to a first output terminal and output a switching signal to a first node in response to a plurality of clock signals and a first carry signal; anda masking circuit configured to output a second carry signal to a second output terminal in response to a masking clock signal, the light emission driving signal, and the switching signal,wherein the masking clock signal is a signal which is maintained at a first level during a normal mode and periodically changes during a low power mode.2. The light emission driving circuit of claim 1 , wherein the masking circuit comprises:a first masking transistor configured to transmit the masking clock signal to the second output terminal in response to the switching signal; anda second masking transistor configured to electrically connect the second output terminal to a first voltage terminal configured to receive a first voltage in response to the light emission driving signal.3. The light emission driving circuit of claim 2 , wherein the masking circuit outputs the masking clock signal as the second carry signal when the second masking transistor is turned off and the first masking transistor is turned on.4. The light emission driving circuit of claim 2 , wherein the driving circuit comprises:a first transistor configured to transmit ...

DISPLAY APPARATUS AND METHOD FOR DRIVING THE SAME

A display apparatus includes a display panel and a first gate driver. The display panel includes a plurality of data lines extending in a first direction, and a plurality of gate lines extending in a second direction obliquely inclined toward the first direction and spaced apart from each other in a third direction crossing the second direction. The plurality of gate lines includes a first gate line group and a second gate line group respectively disposed in first and second display areas of the display panel. The first gate driver is configured to drive at least one gate line of the second gate line group while driving at least one gate line of the first gate line group.

METHOD OF DRIVING A DISPLAY PANEL AND DISPLAY DEVICE PERFORMING THE SAME

A method of driving a display panel is disclosed. In one aspect, the display panel includes a plurality of pixels, each of the pixels including a first transistor connected to a first gate line and a pixel electrode and a second transistor connected to a second gate line and the pixel electrode. The method including alternately providing the first gate line with a gate signal and a reverse bias signal and alternately providing the second gate line with the gate signal when the first gate line is provided with the reverse bias signal and the reverse bias signal when the first gate line is provided with the gate signal. 1. A method of driving a display panel comprising a plurality of pixels , each pixel connected to first and second gate lines , the method comprising:alternately applying a gate signal and a reverse bias signal to the first gate line; and alternately applying to the second gate line i) the gate signal when the reverse bias signal is applied to the first gate line and ii) the reverse bias signal when the gate signal is applied to the first gate line.2. The method of claim 1 , wherein the display panel further comprises a plurality of pixels each comprising a pixel electrode and first and second transistors claim 1 , wherein one of the first and second transistors is configured to transfer a data signal to the pixel electrode based at least in part on the gate signal claim 1 , and wherein the other transistor is configured to be turned off or become inactive based at least in part on the reverse bias signal.3. The method of claim 1 , wherein the gate signal comprises an ON voltage and an OFF voltage and wherein the reverse bias signal is different from the OFF voltage.4. The method of claim 1 , wherein the gate signal comprises an ON voltage and an OFF voltage and wherein the reverse bias signal is substantially equal to the OFF voltage.5. A method of driving a display panel comprising a plurality of pixels claim 1 , each of the pixels comprising a pixel ...

DISPLAY DEVICE PERFORMING MULTI-FREQUENCY DRIVING

A display device includes a display panel including a first partial panel region and a second partial panel region, and a panel driver configured to drive the display panel. The panel driver determines a first driving frequency for the first partial panel region and a second driving frequency for the second partial panel region. When the first driving frequency and the second driving frequency are different from each other, the panel driver sets a boundary portion including a boundary between the first partial panel region and the second partial panel region, and determines a third driving frequency for the boundary portion to be between the first driving frequency and the second driving frequency. 1. A display device comprising:a display panel comprising a first partial panel region and a second partial panel region; anda panel driver to drive the display panel,wherein the panel driver is to further determine a first driving frequency for the first partial panel region and a second driving frequency for the second partial panel region, andwherein, when the first driving frequency and the second driving frequency are different from each other, the panel driver is to further set a boundary portion comprising a boundary between the first partial panel region and the second partial panel region, and to determine a third driving frequency for the boundary portion to be between the first driving frequency and the second driving frequency.2. The display device of claim 1 , wherein the third driving frequency gradually decreases in a direction from one of the first and second partial panel regions driven at a higher one of the first and second driving frequencies to the other one of the first and second partial panel regions driven at a lower one of the first and second driving frequencies.3. The display device of claim 2 , wherein the third driving frequency gradually decreases per scan line.4. The display device of claim 2 , wherein the third driving frequency gradually ...

LIQUID CRYSTAL DISPLAY AND DRIVING METHOD THEREOF

A liquid crystal display includes a signal controller to generate a plurality of start pulse signals based on a plurality of eye blinking signals during a predetermined mode of operation. The start pulse signals are generated in a manner different from a vertical synchronization signal. The start signals may be generated to have an irregular spacing which corresponds to the blinking signals, which may be different from a constant spacing used during display of moving images. The predetermined mode may be a still image mode.

LIGHT SENSITIVE CIRCUIT, LIGHT SENSING PANEL HAVING THE LIGHT SENSITIVE CIRCUIT AND DISPLAY APPARATUS HAVING THE LIGHT SENSING PANEL

A light sensitive circuit includes a light sensing capacitor and a driving transistor. The light sensing capacitor is configured to sense light of a predetermined one or more wavelengths. The driving transistor includes a gate electrode electrically connected to the light sensing capacitor and is configured to generate a light sensing current according to a voltage of the gate electrode in the driving transistor. A light sensing accuracy and a light sensing signal to noise ratio (SNR) of the display apparatus including a plurality of such light sensing capacitors may be improved relative to ones that do not include such light sensing capacitors. 1. A light sensitive circuit comprising:a light sensitive capacitor configured to change its charge storing characteristics in response to received light of a predetermined one or more wavelengths; anda driving transistor including a gate electrode electrically connected to the light sensitive capacitor.2. The light sensitive circuit of claim 1 , wherein the light sensitive capacitor and the driving transistor are formed in a pixel unit of a display panel configured for displaying an image.3. The light sensitive circuit of claim 2 , further comprising:a first switching transistor configured to be driven in response to an (n+1)-th (n is a natural number) gate signal which is activated in succession after activation of an n-th gate signal and to transfer a driving reference voltage to the gate electrode in the driving transistor, the driving reference voltage being a predetermined reference voltage, the n-th and (n+1)-th gate signals being signals generated by drive circuitry of the display panel.4. The light sensitive circuit of claim 3 , further comprising:a coupling capacitor electrically connected to a gate electrode of the first switching transistor, to the gate electrode of the driving transistor and to the light sensitive capacitor.5. The light sensitive circuit of claim 3 , wherein the first switching transistor is a ...

Display apparatus and method of driving display panel using the same

A display apparatus includes a timing controller, a data driver and a display panel. The timing controller receives input image data at a first frequency substantially equal to a frame rate of an input image. The timing controller generates a data signal having the first frequency based on the input image data having the first frequency. The data driver converts the data signal into a data voltage. The display panel displays an image based on the data voltage.

DISPLAY DEVICE AND DRIVING METHOD THEREOF

A display device includes: a similar gray level block detector configured to detect a pixel data block in which a gray level difference between a plurality of pixel data included in an image signal is smaller than or equal to a threshold; a skin tone detector configured to detect the pixel data block including a skin tone; and a gamma processor configured to apply a first gamma to a plurality of pixel data included in the pixel data block when the pixel data block does not include the skin tone and apply a second gamma to the plurality of pixel data included in the pixel data block when the pixel data block includes the skin tone. 1. A display device comprising:a similar gray level block detector configured to detect a pixel data block in which a gray level difference between a plurality of pixel data included in an image signal is smaller than or equal to a threshold;a skin tone detector configured to detect the pixel data block including a skin tone; anda gamma processor configured to apply a first gamma to a plurality of pixel data included in the pixel data block when the pixel data block does not include the skin tone and apply a second gamma to the plurality of pixel data included in the pixel data block when the pixel data block includes the skin tone.2. The display device of claim 1 , wherein:the first gamma is a single gamma including one gamma.3. The display device of claim 2 , wherein:the second gamma is a multi gamma including a plurality of gammas.4. The display device of claim 3 , wherein:the gamma processor applies different gammas to a plurality of subpixel data included in each of the plurality of pixel data when the pixel data block includes the skin tone.5. The display device of claim 3 , wherein:the gamma processor applies a plurality of different first gammas to a plurality of subpixel data included in each of the plurality of pixel data during odd frames and applies a plurality of different second gammas to the plurality of subpixel data ...

PIXEL CIRCUIT

A pixel circuit includes: a main circuit including: a driving transistor that includes a gate terminal connected to a first node, a first terminal connected to a second node, and a second terminal connected to a third node; and an organic light-emitting element connected to the driving transistor and configured to control the organic light-emitting element by controlling a driving current corresponding to a data signal applied via a data line to flow into the organic light-emitting element; and a sub circuit including: a first compensation transistor that includes a gate terminal configured to receive a first gate signal, a first terminal connected to the first node, and a second terminal connected to a fourth node; and a second compensation transistor that includes a gate terminal configured to receive a second gate signal, a first terminal connected to the fourth node, and a second terminal connected to the third node. 1. A pixel circuit comprising: a driving transistor that includes a gate terminal connected to a first node, a first terminal connected to a second node, and a second terminal connected to a third node; and', 'an organic light-emitting element connected to the driving transistor between a first power voltage and a second power voltage and configured to control the organic light-emitting element to emit light by controlling a driving current corresponding to a data signal applied via a data line to flow into the organic light-emitting element; and, 'a main circuit including a first compensation transistor that includes a gate terminal configured to receive a first gate signal, a first terminal connected to the first node, and a second terminal connected to a fourth node; and', 'a second compensation transistor that includes a gate terminal configured to receive a second gate signal, a first terminal connected to the fourth node, and a second terminal connected to the third node,, 'a sub circuit includingwherein in a low-frequency driving mode, a ...

DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME

A display device includes: a plurality of pixels, where each of the pixels includes a light emitting device and a pixel circuit coupled to the light emitting device; a scan driver which supplies a scan signal to the pixel circuit; a data driver which supplies a data signal to the pixel circuit; a power supply which supplies a voltage to the pixel circuit; a timing controller which controls the scan driver; a first signal generator which provides a first clock signal to the timing controller; and a second signal generator which provides a second clock signal to the timing controller. 1. A display device comprising:a plurality of pixels, wherein each of the pixels includes a light emitting device, and a pixel circuit coupled to the light emitting device;a scan driver which supplies a scan signal to the pixel circuit;a data driver which supplies a data signal to the pixel circuit;a power supply which supplies a voltage to the pixel circuit;a timing controller which controls the scan driver;a first signal generator which provides a first clock signal to the timing controller; anda second signal generator which provides a second clock signal to the timing controller.2. The display device of claim 1 , wherein the timing controller controls the scan driver based on the first clock signal to supply a first scan signal to the pixel circuit claim 1 , and controls the scan driver based on the second clock signal to supply a second scan signal to the pixel circuit.3. The display device of claim 2 , whereinthe data signal is supplied to the pixel circuit from the data driver, while the first scan signal is being supplied to the pixel circuit, andthe voltage is supplied to the pixel circuit from the power supply, while the second scan signal is being supplied to the pixel circuit.4. The display device of claim 3 , wherein the first scan signal and the second scan signal are supplied to the pixel circuit claim 3 , while the light emitting device is not emitting light.5. The ...

DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME

A display apparatus includes a mode determiner configured to compare image signals of a previous frame and a current frame and to determine an image mode of the current frame, a sync signal generator configured to generate a panel sync signal with a low frequency corresponding to the image mode using an original sync signal with a normal frequency, the low frequency being a non-divisor frequency of the normal frequency and lower than the normal frequency, a data driver configured to drive a data line of a display panel using a data sync signal based on the panel sync signal with the low frequency, and a gate driver configured to drive a gate line of the display panel using a gate sync signal based on the panel sync signal with the low frequency. 1. A display apparatus comprising:a mode determiner configured to compare image signals of a previous frame and a current frame and to determine an image mode of the current frame;a sync signal generator configured to generate a panel sync signal with a low frequency corresponding to the image mode using an original sync signal with a normal frequency, the low frequency being a non-divisor frequency of the normal frequency and lower than the normal frequency;a data driver configured to drive a data line of a display panel using a data sync signal based on the panel sync signal with the low frequency; anda gate driver configured to drive a gate line of the display panel using a gate sync signal based on the panel sync signal with the low frequency.2. The display apparatus of claim 1 , wherein the sync signal generator is configured to generate a vertical sync signal with the low frequency based on a vertical sync signal with the normal frequency claim 1 , andthe vertical sync signal with the low frequency has a first frame period and a second frame period different from the first frame period.3. The display apparatus of claim 2 , wherein the first frame period and the second frame period have an active period substantially ...

PIXEL CIRCUIT

A pixel circuit includes a main-circuit that controls an organic light-emitting element by controlling a driving current to flow into the organic light-emitting element and a sub-circuit including a first compensation transistor including a gate terminal which receives a first gate signal, a second compensation transistor including a gate terminal which receives a second gate signal, and an initialization transistor including a gate terminal which receives an initialization signal. Here, in a low-frequency driving mode, a driving frequency of the first gate signal is N hertz (Hz), a driving frequency of the initialization signal is N Hz, a driving frequency of the second gate signal is M Hz, the first compensation transistor and the initialization transistor are turned on during a first time duration in N non-light-emitting periods per second, and the second compensation transistor is turned on during a second time duration in M non-light-emitting periods per second. 1. A pixel circuit comprising:a main circuit including a driving transistor which includes a gate terminal which is connected to a first node, a first terminal which is connected to a second node, and a second terminal which is connected to a third node and an organic light-emitting element which is connected to the driving transistor between a first power voltage and a second power voltage and controls the organic light-emitting element to emit light by controlling a driving current corresponding to a data signal which is applied via a data line to flow into the organic light-emitting element; anda sub circuit including a first compensation transistor which includes a gate terminal which receives a first gate signal, a first terminal which is connected to the first node, and a second terminal which is connected to a fourth node, a second compensation transistor which includes a gate terminal which receives a second gate signal, a first terminal which is connected to the fourth node, and a second ...

DISPLAY APPARATUS AND METHOD OF DRIVING DISPLAY PANEL USING THE SAME

A display apparatus includes a timing controller, a data driver and a display panel. The timing controller receives input image data at a first frequency substantially equal to a frame rate of an input image. The timing controller generates a data signal having the first frequency based on the input image data having the first frequency. The data driver converts the data signal into a data voltage. The display panel displays an image based on the data voltage. 1. A display apparatus comprising:a timing controller, a data driver and a display panel;wherein the timing controller receives input image data at a first frequency, the first frequency being substantially equal to a frame rate of an input image, and generates a data signal having the first frequency based on the input image data having the first frequency;the data driver converts the data signal into a data voltage; andthe display panel displays an image based on the data voltage.2. The display apparatus of claim 1 , further comprising:a decoder, a memory and a graphic processing unit;wherein the decoder decodes the input image;the memory stores the decoded input image in the memory; andthe graphic processing unit converts the decoded input image into the input image data having the first frequency and outputs the input image data to the timing controller.3. The display apparatus of claim 1 , wherein the input image data includes active periods and blank periods which alternate with each other.4. The display apparatus of claim 3 , wherein each gap between the active periods are substantially uniform.5. The display apparatus of claim 4 , wherein a length of the active period is 1/60 second claim 4 , anda length of the blank period is determined as the each gap of the adjacent active periods.6. The display apparatus of claim 3 , wherein when the first frequency is 30 Hz (hertz) claim 3 , a length of the active period is substantially equal to a length of the blank period.7. The display apparatus of claim 3 , ...

DISPLAY APPARATUS AND METHOD OF OPERATING THE SAME

A display apparatus may include a display timing controller and a display panel. The display timing controller generates first output image data based on first input image data and a first gamma function, and generates second output image data based on second input image data and a second gamma function. The display panel operates based on the first output image data during a first duration, and operates based on the second output image data during a second duration subsequent to the first duration. The first and second gamma functions correspond to a first region of the display panel, and a luminance of an image based on the first gamma function is different from a luminance of an image based on the second gamma function. 1. A display apparatus comprising:a timing controller configured to generate first output image data based on first input image data and a first gamma lookup table, and configured to generate second output image data based on second input image data and a second gamma lookup table; anda display panel configured to operate based on the first output image data during a first duration, and configured to operate based on the second output image data during a second duration subsequent to the first duration,wherein the first and second gamma lookup tables correspond to a first region of the display panel, and a luminance of an image based on the first gamma lookup table is different from a luminance of an image based on the second gamma lookup table.2. The display apparatus of claim 1 , wherein the timing controller further performs a temporal smoothing operation to reduce discontinuity between the first output image data and the second output image data during a third duration between the first duration and the second duration.3. The display apparatus of claim 2 , wherein the timing controller further generates at least one smoothing image data by performing an interpolation based on the first output image data and the second output image data claim 2 ...

Gamma applied data generating circuit and display device including the same

Gamma applied data generating circuit includes motion vector extractor, gamma pattern generator, first gamma applier, second gamma applier, and output converter. Motion vector extractor extracts motion vector of object. Gamma pattern generator generates first gamma pattern corresponding to first motion vector value and second gamma pattern corresponding to second motion vector value from first time point. Value of motion vector is changed from first motion vector value to second motion vector value at first time point. First and second gamma appliers generate first and second data by applying first and second gamma pattern to input data, respectively. Output converter outputs sum of first data times first weight and second data times second weight as gamma applied data. From first time point to second time point, output converter converts first weight from 1 to 0 and converts second weight from 0 to 1.

METHOD OF DRIVING DISPLAY PANEL AND DISPLAY APPARATUS FOR PERFORMING THE SAME

A method of driving a display panel includes generating a high data voltage having a high gamma corresponding to a grayscale of input image data, generating a low data voltage having a low gamma less than the high gamma corresponding to the grayscale of the input image data and outputting the high data voltage and the low data voltage to pixels of a display panel. Of the high data voltage and the low data voltage, only the low data voltage is outputted to the pixels of the display panel during at least one frame. 1. A method of driving a display panel , the method comprising:generating a high data voltage having a high gamma corresponding to a grayscale of input image data;generating a low data voltage having a low gamma less than the high gamma corresponding to the grayscale of the input image data; andoutputting the high data voltage and the low data voltage to pixels of a display panel,wherein of the high data voltage and the low data voltage, only the low data voltage is outputted to the pixels of the display panel in at least one frame.2. The method of claim 1 , wherein the high data voltage is outputted to a first data pixel group of the display panel and the low data voltage is outputted to a second data pixel group of the display panel in a first frame of four consecutive frames claim 1 ,the low data voltage is outputted to the first data pixel group and the second data pixel group of the display panel in a second frame of the four consecutive frames,the low data voltage is outputted to the first data pixel group of the display panel and the high data voltage is outputted to the second data pixel group of the display panel in a third frame of the four consecutive frames, andthe low data voltage is outputted to the first data pixel group and the second data pixel group of the display panel in a fourth frame of the four consecutive frames.3. The method of claim 1 , wherein the high data voltage is outputted to a pixel among the pixels of the display panel in ...

LIQUID CRYSTAL DISPLAY DEVICE

A liquid crystal display device includes a liquid crystal panel of a normally black type which receives a plurality of scan signals and a common voltage having a voltage level which periodically varies, and a backlight unit which provides backlight to the liquid crystal panel, where the plurality of scan signals sequentially has a scan-on voltage along a first direction, and the backlight has a luminance which is increased or decreased along the first direction. 1. A liquid crystal display device comprising:a liquid crystal panel of a normally black type which receives a plurality of scan signals and receives a common voltage having a voltage level, which periodically varies; anda backlight unit which provides backlight to the liquid crystal panel,whereinthe plurality of scan signals sequentially has a scan-on voltage along a first direction, andthe backlight has a luminance which is increased along the first direction.2. The liquid crystal display device of claim 1 , wherein the backlight unit comprises:a light source which emits light; anda light guide plate which guides the light from the light source,whereinthe light guide plate comprises a plurality of diffusion patterns arranged on a surface thereof, anda density of the plurality of diffusion patterns is increased along the first direction.3. The liquid crystal display device of claim 1 , wherein the backlight unit comprises:a plurality of light sources which emits light; anda light guide plate which guides the light from the light sources,whereinthe plurality of light sources is arranged along the first direction, anda pitch of the plurality of light sources is decreased along the first direction.4. The liquid crystal display device of claim 3 , wherein the light emitted from the plurality of light sources has substantially the same luminance as each other.5. The liquid crystal display device of claim 1 , wherein the backlight unit comprises:a plurality of light sources which emits light; anda light guide ...

APPARATUS FOR DETECTING AFTERIMAGE CANDIDATE REGION AND APPARATUS INCLUDING THE SAME FOR PREVENTING AFTERIMAGE

An apparatus for detecting an afterimage candidate region includes: a comparison unit which compares gradation data of an n-th frame with integrated gradation data of an (n−1)-th frame and generates integrated gradation data of the n-th frame, where n is a natural number; a memory which provides the integrated gradation data of the (n−1)-th frame to the comparison unit and stores the integrated gradation data of the n-th frame; and an afterimage candidate region detection unit which detects an afterimage candidate region based on the integrated gradation data of the n-th frame, where each of the integrated gradation data of the n-th frame and the integrated gradation data of the (n−1)-th frame comprises a comparison region and a gradation region. 1. An apparatus for detecting an afterimage candidate region , comprising:a comparison unit which compares gradation data of an n-th frame with integrated gradation data of an (n−1)-th frame and generates integrated gradation data of the n-th frame, wherein n is a natural number;a memory which provides the integrated gradation data of the (n−1)-th frame to the comparison unit and stores the integrated gradation data of the n-th frame; andan afterimage candidate region detection unit which detects the afterimage candidate region based on the integrated gradation data of the n-th frame,wherein each of the integrated gradation data of the n-th frame and the integrated gradation data of the (n−1)-th frame comprises a comparison region and a gradation region.2. The apparatus for detecting an afterimage candidate region of claim 1 , whereinthe number of bits of the gradation data of the n-th frame is equal to the number of bits of the integrated gradation data of the n-th frame.3. The apparatus for detecting an afterimage candidate region of claim 1 , whereinthe comparison region has a size of a-bits and the gradation region has a size of b-bits, wherein a and b are natural numbers, anda value of the gradation region of the ...

DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME

A display apparatus includes a display panel for displaying an image and that includes a plurality of display areas, a light source part for providing a light to the display panel, a luminance measurer for measuring a luminance of each display area of the display panel and outputting a panel luminance signal of each display area of the display panel, and a light source driver for driving the light source part based on the panel luminance signal to decrease the light source luminance signal of each display area of the display panel when the panel luminance signal of each display area of the display panel increases and to increase the light source luminance signal of each display area of the display panel when the panel luminance signal of each display area of the display panel decreases. 1. A display apparatus comprising:a display panel configured to display an image and comprising a plurality of display areas;a light source part configured to provide light to the display panel;a luminance measurer configured to measure a luminance of each display area of the display panel and output a panel luminance signal of each display area of the display panel; anda light source driver configured to drive the light source part based on the panel luminance signal to decrease the light source luminance signal of each display area of the display panel when the panel luminance signal of each display area of the display panel increases and to increase the light source luminance signal of each display area of the display panel when the panel luminance signal of each display area of the display panel decreases.2. The display apparatus of claim 1 , further comprising:a timing controller configured to receive the panel luminance signal of each display area of the display panel and to output a dimming signal to the light source driver for controlling a luminance of each display area of the display panel.3. The display apparatus of claim 2 , wherein the dimming signal is a digital signal ...

DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME

A display apparatus includes a display panel, a data driver, and a power voltage generator. The display panel includes a plurality of pixels and configured to display an image. The data driver is configured to apply a data voltage to the display panel. The power voltage generator is configured to provide a power voltage and an initialization voltage to the display panel. The power voltage generator is configured to receive a feedback initialization voltage from the display panel and configured to compensate the initialization voltage based on the feedback initialization voltage. 1. A display apparatus comprising:a display panel comprising a plurality of pixels and configured to display an image;a data driver configured to apply a data voltage to the display panel; anda power voltage generator configured to provide a power voltage and an initialization voltage to the display panel,wherein the power voltage generator is configured to receive a feedback initialization voltage from the display panel and configured to compensate the initialization voltage based on the feedback initialization voltage.2. The display apparatus of claim 1 , wherein at least one of the pixels comprises an organic light emitting element claim 1 , andWherein the at least one of the pixels is configured to receive a data write gate signal, a data initialization gate signal, the data voltage, and the initialization voltage, the at least one of the pixels being configured to emit light via the organic light emitting element according to a level of the data voltage to display the image.3. The display apparatus of claim 2 , wherein when a data write gate signal of a first pixel among the pixels is activated claim 2 , a data initialization gate signal of a second pixel among the pixels is activated.4. The display apparatus of claim 2 , wherein the at least one of the pixels comprises:a first pixel switching element comprising a control electrode connected to a first node, an input electrode connected ...

PIXEL OF AN ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE, AND ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE

A pixel includes: a storage capacitor connected between a first power supply voltage and a gate node; a first transistor including a gate electrode connected to the gate node; a second transistor to transfer a data signal to a source of the first transistor in response to a scan signal; a third transistor to diode-connect the first transistor in response to the scan signal, and including first and second sub-transistors serially connected between the gate node and a drain of the first transistor; a fourth transistor to transfer an initialization voltage to the gate node in response to an initialization signal, and including third and fourth sub-transistors serially connected between the gate node and the initialization voltage; and an organic light emitting diode including a cathode connected to a second power supply voltage. At least one of the second and fourth sub-transistors includes a bottom electrode. 1. A pixel of an organic light emitting diode display device , the pixel comprising:a storage capacitor comprising a first electrode connected to a line of a first power supply voltage, and a second electrode connected to a gate node;a first transistor comprising a gate electrode connected to the gate node;a second transistor configured to transfer a data signal to a source of the first transistor in response to a scan signal;a third transistor configured to diode-connect the first transistor in response to the scan signal, the third transistor comprising first and second sub-transistors serially connected between the gate node and a drain of the first transistor;a fourth transistor configured to transfer an initialization voltage to the gate node in response to an initialization signal, the fourth transistor comprising third and fourth sub-transistors serially connected between the gate node and a line of the initialization voltage; andan organic light emitting diode comprising an anode, and a cathode connected to a line of a second power supply voltage,wherein ...

Display device having security function

Display device includes timing controller, display panel, data driver, and scan driver. The timing controller includes an authentication processing unit configured to generate an authentication result based on an authentication control signal. The timing controller converts an input image data signal to data driver control signal and scan driver control signal when the authentication result represents success. The timing controller deactivates the data driver control signal and the scan driver control signal when the authentication result represents fail. The display panel includes plurality of pixels. The data driver generates plurality of data signals based on the data driver control signal and provides the data signals to the pixels through plurality of data signal lines. The scan driver generates plurality of scan signals based on the scan driver control signal and provides the scan signals to the pixels through plurality of scan signals lines.

LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD THEREOF

A liquid crystal display panel comprises a backlight unit including an optical assembly and configured to differentiate the liquid crystal display panel into a plurality of blocks and to illuminate light to each of the plurality of blocks; a location sensor configured to sense a location of a user watching the liquid crystal display panel; a backlight controller configured to output a dimming value corresponding to a brightness of each of the plurality of blocks according to a result of sensing by the location sensor; and a backlight driver configured to generate a driving current corresponding to the dimming value of each block and to provide the generated driving current to the backlight unit corresponding to each of the plurality of blocks. 1. A liquid crystal display panel , comprising:a backlight unit, including an optical assembly, for differentiating the liquid crystal display panel into a plurality of blocks and for illuminating light to each of the plurality of blocks;a location sensor for sensing a location of a user watching the liquid crystal display panel;a backlight controller for outputting a dimming value corresponding to a brightness of each of the plurality of blocks according to a result of sensing sensed by the location sensor; anda backlight driver for generating a driving current corresponding to the dimming value of each block and for providing the generated driving current to the backlight unit corresponding to each of the plurality of blocks.2. The liquid crystal display panel according to claim 1 , wherein the optical assembly comprises:a plurality of light source units including at least one light emitting device for emitting light;a light guide panel comprising an incidence surface where light is transmitted from the light source unit, an exit surface emitting the light to the liquid crystal display panel, and a light guide panel facing the exit surface and comprising a rear surface where a plurality of optical patterns are formed; andan ...

APPARATUS FOR DETECTING AFTERIMAGE CANDIDATE REGION AND APPARATUS INCLUDING THE SAME FOR PREVENTING AFTERIMAGE

An apparatus for detecting an afterimage candidate region includes: a comparison unit which compares gradation data of an n-th frame with integrated gradation data of an (n−1)-th frame and generates integrated gradation data of the n-th frame, where n is a natural number; a memory which provides the integrated gradation data of the (n−1)-th frame to the comparison unit and stores the integrated gradation data of the n-th frame; and an afterimage candidate region detection unit which detects an afterimage candidate region based on the integrated gradation data of the n-th frame, where each of the integrated gradation data of the n-th frame and the integrated gradation data of the (n−1)-th frame comprises a comparison region and a gradation region. 1. An apparatus for detecting an afterimage candidate region , comprising:an edge enhancement unit which generates edge enhanced gradation data of an n-th frame from gradation data of the n-th frame, wherein n is a natural number;a comparison unit which compares the edge enhanced gradation data of the n-th frame with integrated gradation data of an (n−1)-th frame and generates integrated gradation data of the n-th frame;a memory which provides the integrated gradation data of the (n−1)-th frame to the comparison unit and stores the integrated gradation data of the n-th frame; andan afterimage candidate region detection unit which detects the afterimage candidate region based on the integrated gradation data of the n-th frame,wherein each of the integrated gradation data of the n-th frame and the integrated gradation data of the (n−1)-th frame comprises a comparison region and a gradation region.2. The apparatus for detecting an afterimage candidate region of claim 1 , whereinthe edge enhanced gradation data of the n-th frame corresponds to a change amount of gradation of the gradation data of the n-th frame.3. The apparatus for detecting an afterimage candidate region of claim 1 , whereinthe number of bits of the gradation ...

METHOD OF DRIVING DISPLAY PANEL AND DISPLAY APPARATUS FOR PERFORMING THE SAME

A method of driving a display panel is disclosed. In one aspect, the display panel includes a plurality of pixels arranged in odd and even rows and a plurality of odd and even gate lines respectively connected to the pixels of the corresponding odd and even rows. The method includes outputting odd gate signals to the odd numbered gate lines during two consecutive subframes and outputting even gate signals to the even numbered gate lines during two consecutive subframes. A frame is divided into two subframes. 1. A method of driving a display panel including a plurality of pixels arranged in alternating odd and even rows and a plurality of alternating odd and even gate lines respectively connected to the pixels of the corresponding odd and even rows , the method comprising:outputting odd gate signals to the odd gate lines during two consecutive subframes, wherein a frame is divided into two subframes; andoutputting even gate signals to the even gate lines during another two consecutive subframes.2. The method of claim 1 , wherein the odd gate signals are output to the odd numbered gate lines during a first subframe of an N-th frame and a second subframe of an (N+1)-th frame claim 1 , wherein the even gate signals are output to the even numbered gate lines during a second subframe of the N-th frame and a first subframe of the (N+1)-th frame claim 1 , and wherein N is a natural number.3. The method of claim 1 , wherein the outputting of the odd gate signals comprises generating the odd gate signals based at least in part on a first vertical start signal claim 1 , wherein the outputting of the even gate signals comprises generating the even gate signals based at least in part on a second vertical start signal claim 1 , and wherein the first and second vertical start signals are generated during different subframes.4. The method of claim 3 , wherein the second vertical start signal is generated based at least in part on the last odd numbered gate signal of a previous ...

DISPLAY APPARATUS HAVING GATE DRIVING CIRCUIT

A display apparatus includes: a display panel including a plurality of pixels respectively connected to a plurality of gate lines; a gate driving circuit including a plurality of driving stages configured to apply gate signals to the gate lines; a voltage generator configured to output a gate-on voltage through a voltage output terminal thereof; and a signal controller configured to sense a variation in current of the voltage output terminal to output a back bias control voltage corresponding to the sensed current variation, wherein each of the driving stages comprises a plurality of oxide thin film transistors and at least one of the oxide thin film transistors is a four-terminal transistor in which a threshold voltage thereof is controlled by the back bias control voltage. 1. A display apparatus comprising:a display panel comprising a plurality of pixels respectively connected to a plurality of gate lines;a voltage generator configured to output a gate-on voltage through a voltage output terminal thereof;a clock generator configured to receive the gate-on voltage and comprising a clock output terminal configured to output at least one clock signal and a first low-level voltage output terminal configured to output a first low-level voltage;a gate driving circuit comprising a plurality of driving stages each configured to receive the at least one clock signal and the first low-level voltage to apply gate signals to the gate lines; anda signal controller configured to sense a variation in current of the first low-level voltage output terminal and configured to output a back bias control voltage corresponding to the sensed current variation, wherein each of the driving stages comprises a plurality of oxide thin film transistors and at least one of the oxide thin film transistors is a four-terminal transistor in which a threshold voltage thereof is controlled by the back bias control voltage.2. The display apparatus of claim 1 , wherein the signal controller comprises: ...

PIXEL, DISPLAY DEVICE HAVING THE SAME, AND THIN FILM TRANSISTOR (TFT) SUBSTRATE FOR DISPLAY DEVICE

A pixel, a display device having the same, and a thin film transistor (TFT) substrate for the display device are disclosed. In one aspect, the pixel includes an emitter configured to emit light based at least in part on a driving current. The pixel also includes a driving transistor including an active layer, a first electrode electrically connected to a first end portion of the active layer, a second electrode electrically connected to a second end portion of the active layer, a first gate electrode configured to receive a data voltage from a data driver so as to form a channel in the active layer, and a second gate electrode configured to receive a bias voltage from a voltage source, wherein the channel is configured to adjust the driving current. 1. A pixel comprising:an emitter configured to emit light based at least in part on a driving current;a driving transistor including an active layer, a first electrode electrically connected to a first end portion of the active layer, a second electrode electrically connected to a second end portion of the active layer, a first gate electrode configured to receive a data voltage from a data driver so as to form a channel in the active layer, and a second gate electrode configured to receive a bias voltage from a voltage source, wherein the channel is configured to adjust the driving current;a data voltage holding circuit configured to maintain a voltage of the first gate electrode while the emitter emits the light; anda data voltage providing circuit configured to transmit the data voltage to the first gate electrode based at least in part on a scan signal.2. The pixel of claim 1 , wherein a swing width of the driving current according to a swing of the data voltage is adjusted based on the bias voltage applied to the second gate electrode.3. The pixel of claim 1 , wherein a magnitude of a threshold voltage of the driving transistor is adjusted based on the bias voltage applied to the second gate electrode.4. The pixel ...

DISPLAY DEVICE

A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel. 1. A display device comprising:a first substrate;a gate line and a data line on the first substrate;a storage electrode line on the first substrate, wherein a constant voltage is applied thereto;a first switching element connected to the gate line and the data line;a second switching element connected to the gate line and the data line;a third switching element connected to the gate line, the second switching element, and the storage electrode; anda pixel electrode comprising a first subpixel electrode connected to the first switching element and a second subpixel electrode connected to the second switching element, wherein the storage electrode line is disposed on the same layer as the data line, and overlaps the gate line.2. The display device of claim 1 , whereinthe storage electrode comprises a main storage voltage line and an assistant storage voltage line, andthe assistant storage voltage line is disposed on the same layer as the data line, and overlaps the gate line.3. The display device of claim 2 , whereinthe assistant storage voltage line extends in a ...

TOUCH SENSOR AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME

There are provided a touch sensor and a liquid crystal display including the same. A touch sensor includes a plurality of driving electrodes, a plurality of sensing electrodes intersecting the driving electrodes, a plurality of piezoelectric materials disposed between the driving electrodes and the sensing electrodes at intersection points of the driving electrodes and the sensing electrodes, and a touch controller for detecting a touch position and a touch pressure by using sensing signals output from the sensing electrodes. 1. A touch sensor comprising:a plurality of driving electrodes;a plurality of sensing electrodes intersecting the driving electrodes;a plurality of piezoelectric materials disposed between the driving electrodes and the sensing electrodes at intersection points of the driving electrodes and the sensing electrodes; anda touch controller configured to detect a touch position and a touch pressure by using sensing signals output from the sensing electrodes.2. The touch sensor of claim 1 , wherein the touch controller includes:a touch position detector configured to detect the touch position by using alternating current (AC) components of the sensing signals; anda touch pressure detector configured to detect the touch pressure by using direct current (DC) components of the sensing signals.3. The touch sensor of claim 2 , wherein the touch controller further includes a plurality of AC bypass capacitors disposed between the sensing electrodes and the touch position detector claim 2 , the plurality of AC bypass capacitors selectively transmitting the AC components of the sensing signals to the touch position detector.4. The touch sensor of claim 3 , wherein the touch pressure detector includes:an analog-digital converter (ADC) receiving the DC components of the sensing signal and configured to convert the DC components of the sensing signals into digital data; anda converting unit connected to the ADC and configured to convert the digital data output ...

LIQUID CRYSTAL DISPLAY

A liquid crystal display includes first and second sub-pixels charged with the same voltage during a first period. The voltage charged in the second sub-pixel is decreased after the first period. Since the voltage level of the first sub-pixel is different from the voltage level of the second sub-pixel after the first period, liquid crystal molecules disposed corresponding to the first sub-pixel are aligned in a direction different from that of liquid crystal molecules disposed corresponding to the second sub-pixel. Thus, a side viewing angle of the liquid crystal display is improved. 1. A liquid crystal display , comprising:a gate line configured to receive a gate-on signal during a first period of a frame period;a data line crossing the gate line to receive a data voltage;a first sub-pixel connected to the gate line and the data line to receive the data voltage in response to the gate-on signal;a second sub-pixel connected to the gate line and the data line to receive the data voltage in response to the gate-on signal;a first sharing capacitor including a first electrode and a second electrode electrically connected to the first sub-pixel;a connection part electrically connecting the first electrode of the first sharing capacitor to the second sub-pixel after the first period;a first reset line configured to receive a first reset signal;a first transistor connected to the gate line and the first reset line to output the first reset signal in response to the gate-on signal; anda second reset line configured to receive a second reset signal, wherein the first electrode of the first sharing capacitor is connected to the first transistor and the second electrode of the first sharing capacitor is connected to the second reset line.2. The liquid crystal display of claim 1 , wherein the second reset signal has a voltage level different from a voltage level of the first reset signal.3. The liquid crystal display of claim 1 , wherein the first sub-pixel comprises a second ...

DISPLAY DEVICE

A display device includes a display panel including sub-pixels, a first driver adjacent to a first side of the display panel to generate first signals, and a second driver adjacent to the first side to generate second signals. The display panel includes vertical lines including one ends disposed at the first side to apply the first signals to the sub-pixels, diagonal lines crossing the vertical lines to apply the second signals to the sub-pixels, and crossing lines crossing the vertical and diagonal lines. The diagonal lines include first diagonal lines including one ends at the first side and second diagonal lines including one ends at a second side adjacent to the first side. The crossing lines include one ends at the first side and the other ends at the second side. The crossing lines receive the second signals and apply the second signals to the second diagonal lines. 1. A display device , comprising:a display panel comprising a plurality of sub-pixels;a first driver disposed at a first side of the display panel and generating first signals; anda second driver disposed adjacent to the first side and generating second signals,wherein the display panel comprises:vertical lines comprising one ends disposed at the first side and applying the first signals from the first driver to the sub-pixels;diagonal lines crossing the vertical lines and applying the second signals to the sub-pixels; andcrossing lines crossing the vertical lines and the diagonal lines,wherein the diagonal lines comprise:first diagonal lines of which one ends are disposed at the first side; andsecond diagonal lines in which one ends are disposed at a second side of the display panel adjacent to the first side,wherein the crossing lines have one ends disposed at the first side and the other ends disposed at the second side, and receive the second signals from the second driver and apply the second signals to the second diagonal lines.2. The display device of claim 1 , wherein:the vertical lines ...

DISPLAY DEVICE

A display device includes: a display panel including first group pixels connected to a first gate line to receive first data voltages, and second group pixels connected to the first gate line to receive second data voltages; a backlight source to provide light to the display panel; a signal controller to divide horizontal image signals into first group image signals and second group image signals, to extract a first maximum grayscale image signal from the first group image signals, and to extract a second maximum grayscale image signal from the second group image signals; a power supply to generate first and second gamma driving voltages from a reference gamma driving voltage based on a grayscale level of the first maximum grayscale image signal and a grayscale level of the second maximum grayscale image signal. 1. A display device comprising:a display panel comprising first group pixels connected to a first gate line to receive first data voltages, and second group pixels connected to the first gate line to receive second data voltages;a backlight source configured to provide light to the display panel;a signal controller configured to divide horizontal image signals into first group image signals and second group image signals, to extract a first maximum grayscale image signal from the first group image signals, and to extract a second maximum grayscale image signal from the second group image signals;a power supply configured to generate first and second gamma driving voltages from a reference gamma driving voltage based on a grayscale level of the first maximum grayscale image signal and a grayscale level of the second maximum grayscale image signal;a first data driving circuit configured to apply the first data voltages generated based on the first gamma driving voltage and the first group image signals to the first group pixels; anda second data driving circuit configured to apply the second data voltages generated based on the second gamma driving voltage and ...

LIQUID CRYSTAL DISPLAY AND DRIVING METHOD THEREOF

In a liquid crystal display one pixel is divided into two subpixels, the two subpixels are connected to two subdata lines extending from one data line, and a desired data voltage is applied by using a data driving switching element connected to the subdata line, thereby reducing the number of data lines needed to reduce the cost of the driver and preventing a lack of space to mount the data driver while dividing one pixel into two subpixels and differently applying voltages of the two subpixels. 1. A liquid crystal display comprising:a plurality of pixels disposed in a pixel row direction and a pixel column direction and including a first subpixel electrode and a second subpixel electrode; anda plurality of gate lines and a plurality of data lines connected to the plurality of pixels,wherein the plurality of data lines respectively include a first subdata line and a second subdata line,the first subpixel electrode and the second subpixel electrode of a plurality of pixels positioned at the same pixel row among the plurality of pixels are connected to the same gate line, andthe first subpixel electrode of a plurality of pixels positioned at the same pixel column among the plurality of pixels is connected to one of the first subdata line and the second subdata line, while the second subpixel electrode is connected to the other of the first subdata line and the second subdata line.2. The liquid crystal display of claim 1 , wherein absolute values of a first data voltage applied to the first subpixel electrode and a second data voltage applied to the second subpixel electrode are different.3. The liquid crystal display of claim 2 , further comprising:a first driving gate line extending in the same direction as the gate line; anda first driving transistor connected to the first driving gate line, the data line, and the first subdata line.4. The liquid crystal display of claim 3 , further comprising:a second driving gate line extending in the same direction as the gate ...

DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME

A display apparatus includes a display panel, a driving controller and a data driver. The driving controller is configured to predict a panel temperature according to a position in the display panel based on input image data, to calculate a block current of a display block of the display panel and a panel resistance according to the position in the display panel based on the panel temperature, to calculate a voltage drop according to the position in the display panel based on the block current and the panel resistance and to compensate the input image data based on the voltage drop to generate a data signal. The data driver is configured to convert the data signal to a data voltage and to output the data voltage to the display panel. 1. A display apparatus comprising:a display panel;a driving controller configured to predict a panel temperature according to a position in the display panel based on input image data, to calculate a block current of a display block of the display panel and a panel resistance according to the position in the display panel based on the panel temperature, to calculate a voltage drop according to the position in the display panel based on the block current and the panel resistance and to compensate the input image data based on the voltage drop to generate a data signal;a data driver configured to convert the data signal to a data voltage and to output the data voltage to the display panel.2. The display apparatus of claim 1 , wherein the driving controller comprises:a first current determiner configured to receive the input image data to calculate a first block current of the display block; anda second current determiner configured to compensate the first block current based on the panel temperature to determine a second block current.3. The display apparatus of claim 2 , wherein the first block current is determined independent of the panel temperature claim 2 , andwherein a difference between the first block current and the second block ...

DISPLAY DEVICE AND METHOD OF DRIVING THE SAME

A display device includes display panels, a data converter that renders input image data to convert the input image data corresponding to edge regions of the display panels adjacent to a boundary portion between the display panels into correction data, and a driving controller that receives the correction data and generates a control signal that drives the display panels based on the correction data. The data converter generates the correction data in which an image displayed in the edge region is shifted based on a difference between values of the input image data corresponding to the edge regions of the display panels adjacent to the boundary portion between the display panels adjacent to each other. 1. A display device comprising:display panels;a data converter that renders input image data to convert the input image data corresponding to edge regions of the display panels adjacent to a boundary portion between the display panels into correction data; anda driving controller that receives the correction data and generates a control signal that drives the display panels based on the correction data,wherein the data converter generates the correction data in which an image displayed in the edge region is shifted based on a difference between values of the input image data corresponding to the edge regions of the display panels adjacent to the boundary portion between the display panels adjacent to each other.2. The display device of claim 1 , wherein the data converter measures whether the difference between the values of the input image data corresponding to the edge regions of the display panels adjacent to the boundary portion is equal to or greater than a preset threshold value and converts the input image data into the correction data in case that the difference between the values of the input image data is equal to or greater than the threshold value.3. The display device of claim 2 , wherein in case that the values of the input image data corresponding to ...

DISPLAY APPARATUS AND ELECTRONIC SYSTEM INCLUDING THE SAME

A display apparatus includes a display panel and a timing controller. The timing controller generates first output image data based on input image data and sets a driving frequency of the display panel as a first frequency in a first operation mode. The timing controller converts the input image data into second output image data and sets the driving frequency of the display panel as a second frequency lower than the first frequency in a second operation mode. The display panel displays a first image based on the first frequency and the first output image data in the first operation mode. The first image is represented by X grayscales. The display panel displays a second image based on the second frequency and the second output image data in the second operation mode. The second image is represented by Y grayscales, where Y is less than X. 1. A display apparatus comprising:a display panel; anda timing controller configured to, in a first operation mode, generate first output image data based on input image data and set a driving frequency of the display panel to a first frequency,the timing controller configured to, in a second operation mode, convert the input image data into second output image data based on a plurality of reference grayscales, and set the driving frequency of the display panel to a second frequency lower than the first frequency,wherein, in the second operation mode, the display panel displays the second output image data based on a frame masking driving (FMD) scheme where a predetermined number of image frames are blocked from being displayed on the display panel for an entire period of the image frames,wherein the timing controller includes a grayscale selector configured to determine a plurality of representative grayscales for partial image data of the input image data based on grayscale histograms for the partial image data and the plurality of reference grayscales.2. The display apparatus of claim 1 , wherein every second frame of the input ...

DISPLAY DEVICE AND METHOD OF DRIVING THE SAME

A display device includes a first connector which receives a first image signal and first driving power, a second connector which receives a second image signal and second driving power, a first control unit which processes the first image signal and the first driving power, a second control unit which processes the second image signal and the second driving power, a power management unit which receives the first and second driving powers from the first control unit and the second control unit, measures the first and second driving powers, and provides information about the first driving power and information about the second driving power to the first and second control units, and a display unit which receives one of the first and second image signals from one of the first and second control units and displays one of the first and second image signals. 1. A display device comprising:a first connector which receives a first image signal and first driving power;a second connector which receives a second image signal and second driving power;a first control unit which processes the first image signal and the first driving power provided through the first connector;a second control unit which processes the second image signal and the second driving power provided through the second connector;a power management unit which receives the first driving power and the second driving power from the first control unit and the second control unit, measures the first driving power and the second driving power, and provides information about the first driving power and information about the second driving power to the first control unit and the second control unit; anda display unit which receives one of the first image signal and the second image signal from one of the first control unit and the second control unit and displays one of the first image signal and the second image signal.2. The display device of claim 1 , wherein when the first driving power having a voltage level ...

Method of driving display device

A method of driving a display device includes displaying an image corresponding to a left eye image signal during a first frame set including one or more frames and displaying an image corresponding to a right eye image signal during a second frame set including one or more successive frames, in which the first frame set and the second frame set include at least one frame displaying a first image according to a first gamma curve and at least one frame displaying a second image according to a second gamma curve, and the first frame set and the second frame set include two successive frames displaying the second image.

METHOD OF DRIVING A DISPLAY PANEL, DISPLAY PANEL DRIVING APPARATUS FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE DISPLAY PANEL DRIVING APPARATUS

A method of driving a display panel includes detecting a position of a viewer to output a viewer position detection signal, determining whether the position of the viewer is in a first area or in a second area based on the viewer position detection signal to output a viewer position signal, and driving a unit pixel of the display panel using a plurality of gamma values according to the viewer position signal. The first area is less than a reference distance, and the second area is not less than the reference distance. Thus, side visibility of a display apparatus may be improved.

PIXEL CIRCUIT

A pixel circuit includes a main-circuit that controls an organic light-emitting element by controlling a driving current to flow into the organic light-emitting element and a sub-circuit including a first compensation transistor including a gate terminal which receives a first gate signal, a second compensation transistor including a gate terminal which receives a second gate signal, and an initialization transistor including a gate terminal which receives an initialization signal. Here, in a low-frequency driving mode, a driving frequency of the first gate signal is N hertz (Hz), a driving frequency of the initialization signal is N Hz, a driving frequency of the second gate signal is M Hz, the first compensation transistor and the initialization transistor are turned on during a first time duration in N non-light-emitting periods per second, and the second compensation transistor is turned on during a second time duration in M non-light-emitting periods per second. 1. A pixel circuit comprising:a main circuit including a driving transistor which includes a gate terminal which is connected to a first node, a first terminal which is connected to a second node, and a second terminal which is connected to a third node and an organic light-emitting element which is connected to the driving transistor between a first power voltage and a second power voltage and controls the organic light-emitting element to emit light by controlling a driving current corresponding to a data signal which is applied via a data line to flow into the organic light-emitting element; anda sub circuit including a first compensation transistor which includes a gate terminal which receives a first gate signal, a first terminal which is connected to the first node, and a second terminal which is connected to a fourth node, a second compensation transistor which includes a gate terminal which receives a second gate signal, a first terminal which is connected to the fourth node, and a second ...

DISPLAY DEVICE AND ELECTRONIC DEVICE INCLUDING THE SAME

A display device includes: a processor configured to receive first image data for a display panel from an external system, determine a touch path based on a touch event generated by a touch sensor panel, and output second image data obtained by using the touch path to add overlay data to the first image data; and a control signal generating unit configured to generate a control signal for controlling an operation timing of a gate driver and a data driver, and operate in an interlace mode when the second image data is output to the display panel. 1. A display device comprising:a touch sensor panel;a display panel including a plurality of pixels formed in a plurality of pixel regions defined by a plurality of gate lines and a plurality of data lines;a processor configured to receive first image data for the display panel from an external system, determine a touch path based on a touch event generated by the touch sensor panel, and output second image data obtained by using the touch path to add overlay data to the first image data;a gate driver configured to supply a scan signal to the plurality of gate lines;a data driver configured to supply a data signal corresponding to the second image data to the plurality of data lines according to the scan signal; anda control signal generating unit configured to generate a control signal for controlling an operation timing of the gate driver and the data driver, and operate in an interlace mode when the second image data is output to the display panel to control the gate driver such that the scan signal is supplied to every other line.2. The display device of claim 1 , wherein the processor includes:a touch path logic configured to receive the touch event, determine the touch path based on the touch event, and generate mask data using the touch path; anda rendering logic configured to receive the first image data and output the second image data obtained by using the mask data generated from the touch path to add the overlay ...

LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME

A liquid crystal display device includes a plurality of pixels arranged substantially in a matrix form, where a part of the plurality of pixels defines a pixel column block, a first scan signal is simultaneously applied to an n-th row pixel and an (n+2)-th row pixel of the pixel column block, a second scan signal, which is applied prior to the first scan signal, is simultaneously applied to an (n+1)-th row pixel and an (n+3)-th row pixel of the pixel column block, a first data voltage is applied to the n-th row pixel and the (n+1)-th row pixel, a second data voltage having a polarity different from a polarity of the first data voltage is applied to the (n+2)-th row pixel and the (n+3)-th row pixel, and the polarities of the first data voltage and the second data voltage are inverted on a frame-by-frame basis. 1. A liquid crystal display device comprising:a plurality of pixels arranged substantially in a matrix form,whereina part of the plurality of pixels defines a pixel column block,a first scan signal is simultaneously applied to an n-th row pixel and an (n+2)-th row pixel of the pixel column block,a second scan signal, which is applied prior to the first scan signal, is simultaneously applied to an (n+1)-th row pixel and an (n+3)-th row pixel of the pixel column block,a first data voltage is applied to the n-th row pixel and the (n+1)-th row pixel,a second data voltage having a polarity different from a polarity of the first data voltage is applied to the (n+2)-th row pixel and the (n+3)-th row pixel, andthe polarities of the first data voltage and the second data voltage are inverted on a frame-by-frame basis.2. The liquid crystal display device of claim 1 , whereineach of the first scan signal and the second scan signal comprises a scan-on signal and a scan-off signal,the n-th row pixel and the (n+2)-th row pixel respectively receive the first data voltage and the second data voltage in response to the scan-on signal of the first scan signal, andthe (n+1)-th ...

DISPLAY APPARATUS HAVING GATE DRIVING CIRCUIT

A display apparatus includes: a display panel including a plurality of pixels respectively connected to a plurality of gate lines; a gate driving circuit including a plurality of driving stages configured to apply gate signals to the gate lines; a voltage generator configured to output a gate-on voltage through a voltage output terminal thereof; and a signal controller configured to sense a variation in current of the voltage output terminal to output a back bias control voltage corresponding to the sensed current variation, wherein each of the driving stages comprises a plurality of oxide thin film transistors and at least one of the oxide thin film transistors is a four-terminal transistor in which a threshold voltage thereof is controlled by the back bias control voltage. 1. A display apparatus comprising:a display panel comprising a plurality of pixels respectively connected to a plurality of gate lines;a gate driving circuit comprising a plurality of driving stages configured to apply gate signals to the gate lines;a voltage generator configured to output a gate-on voltage through a voltage output terminal thereof; anda signal controller configured to sense a variation in current of the voltage output terminal to output a back bias control voltage corresponding to the sensed current variation, wherein each of the driving stages comprises a plurality of oxide thin film transistors and at least one of the oxide thin film transistors is a four-terminal transistor in which a threshold voltage thereof is controlled by the back bias control voltage.2. The display apparatus of claim 1 , further comprising a clock generator configured to receive the gate-on voltage and to apply at least one clock signal and at least one low-level voltage to the gate driving circuit.3. The display apparatus of claim 2 , wherein the gate driving circuit further comprises:a back bias voltage signal line configured to transmit the back bias control voltage to each of the driving stages;a ...

LIQUID CRYSTAL DISPLAY AND DRIVING METHOD THEREOF

The described technology relates to a liquid crystal display and a driving method thereof. The liquid crystal display includes a plurality of pixels arranged in a matrix form. The pixels include a liquid crystal capacitor including a pixel electrode and a common electrode as two terminals. A plurality of data lines transfer data to the plurality of pixels. The pixels include a first pixel and a second pixel, which are adjacent to each other. First and second common signals are applied to the common electrode of the first and second pixels, respectively. The second common signal is inverted to the first common signal. The first and second common signals swing between a first voltage and a second voltage. The polarity of the data voltage transferred by a data line with respect to the first common signal or the second common signal is constant during one frame. 1. A liquid crystal display , comprising:a plurality of pixels arranged in a matrix form, the pixels respectively including a liquid crystal capacitor, wherein the liquid crystal capacitor comprises a pixel electrode and a common electrode as two terminals; anda plurality of data lines configured to transfer data voltages to the pixels,wherein the pixels include first and second pixels which are adjacent to each other in a row or column direction,wherein the common electrode of the first pixel is configured to receive a first common signal, wherein the common electrode of the second pixel is configured to receive a second common signal which is inverted to the first common signal,wherein the first and second common signals are configured to swing between first and second voltages which are different from each other for at least every one frame, andwherein the polarity of the data voltage transferred by a data line with respect to the first or second common signal is constant during one frame.2. The liquid crystal display of claim 1 , wherein the polarity of the data voltage applied to the first pixel with ...

DISPLAY DEVICE

A display device includes a memory, a signal controller, and a voltage generator. A plurality of data is stored in the memory. The signal controller detects a frame rate of an externally applied image data signal, selects data corresponding to the detected frame rate among the plurality of data, and outputs a control signal corresponding to the selected data. The voltage generator includes a DC-DC converter for determining an output voltage in correspondence to the control signal and a feedback circuit for determining a current flowing inside and a frequency of an outputted signal in correspondence to the control signal. 1. A display device comprising:a memory configured to store a plurality of data;a signal controller comprising a receiver to receive image data from the outside, a first register to read the plurality of data stored in the memory, and a power controller, wherein the power controller comprises a frequency detector to detect a frequency of the received image data and an operation controller to output a control signal based on data corresponding to the detected frequency among the plurality of data read by the first register; anda voltage generator comprising a plurality of output circuits to output a plurality of voltages in correspondence to the control signal,wherein at least one of the plurality of output circuits comprises:a DC-DC converter; anda feedback circuit configured to control an output of the DC-DC converter and comprising a first comparator, a second comparator, and a PWM controller,wherein at least one of an output voltage of the DC-DC converter, a current between the first comparator and the second comparator, and a frequency of a pulse signal outputted from the PWM controller is changed in correspondence to the control signal.2. The display device of claim 1 , wherein as the detected frequency is higher claim 1 , the output voltage of the DC-DC converter becomes greater.3. The display device of claim 2 , wherein as the detected ...

Image processor, display device including the same and method for driving display panel using the same

An image processor, a display device including the same, and a method for driving display panel using the same are disclosed. In one aspect, the display device includes an image shifter configured to shift a data signal by at least one pixel based at least in part on a shift start signal and output the shifted data signal and a shift direction signal. The display device also includes an image buffer configured to output current data and previous data based at least in part on the shifted data signal and the shift direction signal. The display device also includes an image mixer configured to mix the current data and the previous data over M frames starting at a start frame when the shift start signal is received and output image data, M being a natural number.

DISPLAY DEVICE AND DRIVING METHOD THEREOF

A display device and a driving method thereof are disclosed. In one aspect, the display device includes: a memory which receives an input image data at a first frame frequency and a frame rate controlling unit which converts the input image data to an output image data output at a second frame frequency higher than the first frame frequency by duplicating the input image data to a plurality of frames. The display device also includes a release frame inserting unit which periodically designates release frames in the output image data for resolving a DC bias of one or more continuous frames and a data compensating unit which compensates for a value of the output image data or determines the value of the output image data. 1. A display device , comprising:a memory configured to receive an input image data at a first frame frequency;a frame rate controller configured to convert the input image data to an output image data, output at a second frame frequency higher than the first frame frequency, by duplicating the input image data to a plurality of frames;a release frame inserting unit configured to substantially periodically designate release frames in the output image data to substantially remove a direct current (DC) bias from at least one continuous frame; anda data compensator configured to compensate for a value of the output image data or determine the value of the output image data.2. The display device of claim 1 , wherein the release frame has a frequency of approximately 75 Hz or more.3. The display device of claim 1 , wherein the data compensator is further configured to determine the value of the output image data of the release frame based at least in part on a magnitude of the DC bias in a frame positioned between adjacent release frames.4. The display device of claim 1 , wherein the data compensator is further configured to determine a polarity of the output image data of the release frame based at least in part on a polarity of the DC bias in a frame ...

DISPLAY APPARATUS HAVING A REDUCED-WIDTH BEZEL AND METHOD OF MANUFACTURING THE SAME

A display apparatus includes a display panel and a display panel driver. The display panel includes a lower substrate and an upper substrate facing the lower substrate. The lower substrate includes a first base substrate and a flexible substrate. The flexible substrate has an area larger than an area of the first base substrate. The display panel driver includes a gate driver configured to apply a gate signal to a gate line of the display panel and a data driver configured to apply a data voltage to a data line of the display panel. 1. A display apparatus comprising:a display panel comprising a lower substrate and an upper substrate facing the lower substrate, the lower substrate including a first base substrate and a flexible substrate, the flexible substrate having an area larger than an area of the first base substrate; anda display panel driver comprising: a gate driver configured to apply a gate signal to a gate line of the display panel; and a data driver configured to apply a data voltage to a data line of the display panel.2. The display apparatus of claim 1 , wherein a portion of the flexible substrate is folded toward a lower surface of the first base substrate.3. The display apparatus of claim 2 , further comprising a backlight assembly disposed under the first base substrate and configured to provide light to the display panel claim 2 ,wherein the folded portion of the flexible substrate contacts a lower surface of the backlight assembly.4. The display apparatus of claim 1 , wherein a data pad part connected to the data driver and a fan out portion of the data line are disposed on an extended portion of the flexible substrate claim 1 , the extended portion of the flexible substrate extending outwardly with respect to a side surface of the first base substrate.5. The display apparatus of claim 4 , wherein the gate driver includes a gate driving circuit configured to generate the gate signal claim 4 , andwherein the gate driving circuit is disposed on the ...

DATA DRIVER AND DISPLAY DEVICE INCLUDING A DATA DRIVER

A data driver includes a gamma voltage generator configured to generate gamma voltages based on a number of data bits of a pixel data; a first digital-to-analog block configured to generate a plurality of time-division gamma voltage signals respectively corresponding to a plurality of gamma voltage groups; a plurality of time-division gamma voltage line groups for transferring the plurality of time-division gamma voltage signals; a second digital-to-analog block configured to select a time-division gamma voltage signal among the time-division gamma voltage signals according to upper bits of the pixel data in each channel; a time-division gamma voltage select block configured to select a gamma voltage according to lower bits of the pixel data in each channel; and an output buffer block configured to output the selected gamma voltage in each channel. 1. A data driver outputting a plurality of data voltages to a plurality of pixels through a plurality of channels , the data driver comprising:{'sup': 'N', 'a gamma voltage generator configured to generate 2gamma voltages, where N is an integer greater than one corresponding to a number of data bits of each pixel data among a plurality of pixel data received by the data driver;'}{'sup': N', 'N-M', 'N-M', 'M', 'N', 'N-M', 'N-M', 'N-M', 'M, 'a first digital-to-analog block configured to group the 2gamma voltages into 2gamma voltage groups such that each gamma voltage group of the 2gamma voltage groups includes 2gamma voltages among the 2gamma voltages, where M is an integer greater than zero and less than N, and to generate 2time-division gamma voltage signals respectively corresponding to the 2gamma voltage groups, each time-division gamma voltage signal of the 2time-division gamma voltage signals representing the 2gamma voltages by dividing one horizontal time;'}{'sup': N-M', 'N-M', 'N-M, '2time-division gamma voltage line groups for transferring the 2time-division gamma voltage signals, each time-division gamma voltage ...

LIGHT SENSITIVE CIRCUIT, LIGHT SENSING PANEL HAVING THE LIGHT SENSITIVE CIRCUIT AND DISPLAY APPARATUS HAVING THE LIGHT SENSING PANEL

A light sensitive circuit includes a light sensing capacitor and a driving transistor. The light sensing capacitor is configured to sense light of a predetermined one or more wavelengths. The driving transistor includes a gate electrode electrically connected to the light sensing capacitor and is configured to generate a light sensing current according to a voltage of the gate electrode in the driving transistor. A light sensing accuracy and a light sensing signal to noise ratio (SNR) of the display apparatus including a plurality of such light sensing capacitors may be improved relative to ones that do not include such light sensing capacitors. 1. A light sensitive circuit comprising:a light sensitive capacitor configured to change its charge storing characteristics in response to received light of a predetermined one or more wavelengths;a driving transistor including a gate electrode electrically connected to the light sensitive capacitor; anda first switching transistor configured to be driven in response to an (n+1)-th (n is a natural number) gate signal which is activated in succession after activation of an n-th gate signal and to transfer a driving reference voltage to the gate electrode in the driving transistor, the driving reference voltage being a predetermined reference voltage, the n-th and (n+1)-th gate signals being signals generated by drive circuitry of the display panel,wherein the first switching transistor is directly connected to the driving transistor.2. The light sensitive circuit of claim 1 , wherein the light sensitive capacitor and the driving transistor are formed in a pixel unit of a display panel configured for displaying an image.3. The light sensitive circuit of claim 1 , wherein the first switching transistor is a photo transistor that is responsive to a predetermined one or more wavelengths of light.4. The light sensitive circuit of claim 1 , further comprising:a coupling capacitor electrically connected to a gate electrode of the ...

DISPLAY DEVICE, METHOD OF DRIVING THE SAME, AND IMAGE DISPLAY SYSTEM INCLUDING THE SAME

According to an embodiment, the display device includes a touch controller, an image processor, and a display driver. The touch controller is configured to output touch event information corresponding to a touch signal received from a touch panel. The image processor is configured to determine whether a host is in a sleep mode or a normal mode, and to output mixed image data obtained by overlapping an image displayed on a display panel and a marker corresponding to the touch event information while a host is in the sleep mode. The display driver is configured to output pixel driving signals corresponding to the mixed image data to the display panel. The touch controller or image processor is further configured to determine whether a touch input of a user to the touch panel meets a predetermined condition, and if the predetermined condition is met, output a wake-up signal to the host. 1. A display device , comprising:a touch controller configured to output touch event information corresponding to a touch signal received from a touch panel; determine whether a host is in a sleep mode or a normal mode; and', 'output mixed image data obtained by overlapping an image displayed on a display panel and a marker corresponding to the touch event information while the host is in a sleep mode; and, 'an image processor configured toa display driver configured to output pixel driving signals corresponding to the mixed image data to the display panel, determine whether a touch input of a user to the touch panel meets a predetermined condition, and', 'if the predetermined condition is met, output a wake-up signal to the host., 'wherein the touch controller or image processor is further configured to2. The display device of claim 1 , wherein the image processor is further configured to output input image data received from the host to the display driver while the host is in the normal mode.3. The display device of claim 1 , wherein the image processor is further configured to store ...

DISPLAY DEVICE AND METHOD OF DRIVING THE SAME

A display device includes a first connector which receives a first image signal and first driving power, a second connector which receives a second image signal and second driving power, a first control unit which processes the first image signal and the first driving power, a second control unit which processes the second image signal and the second driving power, a power management unit which receives the first and second driving powers from the first control unit and the second control unit, measures the first and second driving powers, and provides information about the first driving power and information about the second driving power to the first and second control units, and a display unit which receives one of the first and second image signals from one of the first and second control units and displays one of the first and second image signals. 1. A display device comprising:a first connector which receives a first image signal and first driving power;a second connector which receives second driving power;a first control unit which processes the first image signal and the first driving power provided through the first connector;a second control unit which processes the second driving power provided through the second connector;a power management unit which receives the first driving power and the second driving power from the first control unit and the second control unit, measures the first driving power and the second driving power, and provides information about the first driving power and information about the second driving power to the first control unit and the second control unit; anda display unit which receives the first image signal from the first control unit and displays the first image signal.2. The display device of claim 1 , wherein when the first driving power having a voltage level sufficient to drive the display unit is provided through the first connector claim 1 , the display unit is driven by the first driving power claim 1 , and the ...

PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME

There is provided a pixel including an organic light emitting diode (OLED), a first transistor having a first electrode connected to a first power source and configured to control an amount of current supplied from the first power source to the OLED in response to a data signal, a second transistor and a third transistor connected between a second electrode and a gate electrode of the first transistor, and a fourth transistor connected between an initializing power source and a first node that is a common node of the second transistor and the third transistor. 1. A pixel comprising:an organic light emitting diode (OLED);a first transistor having a first electrode connected to a first power source and configured to control an amount of current supplied from the first power source to the OLED in response to a data signal;a second transistor and a third transistor connected between a second electrode and a gate electrode of the first transistor; anda fourth transistor connected between an initializing power source and a first node that is a common node of the second transistor and the third transistor.2. The pixel of claim 1 , wherein the second transistor and the third transistor are concurrently turned on and off.3. The pixel of claim 1 , wherein the second transistor has a turn-on period overlapping that of the third transistor and is configured to maintain a turn-on state for a longer time than the third transistor.4. The pixel of claim 1 , further comprising a fifth transistor connected between a data line and the first electrode of the first transistor and having a turn-on period at least partially overlapping those of the second transistor and the third transistor.5. The pixel of claim 1 , further comprising a storage capacitor connected between the gate electrode of the first transistor and the first power source claim 1 , and configured to store the data signal.6. The pixel of claim 1 , further comprising:a sixth transistor connected between the first power ...

DISPLAY APPARATUS AND METHOD FOR DRIVING THE SAME

A display apparatus includes a display panel and a first gate driver. The display panel includes a plurality of data lines extending in a first direction, and a plurality of gate lines extending in a second direction obliquely inclined toward the first direction and spaced apart from each other in a third direction crossing the second direction. The plurality of gate lines includes a first gate line group and a second gate line group respectively disposed in first and second display areas of the display panel. The first gate driver is configured to drive at least one gate line of the second gate line group while driving at least one gate line of the first gate line group. 1. A display apparatus , comprising;a display panel comprising a plurality of data lines extending in a first direction, and a plurality of gate lines extending in a second direction obliquely inclined toward the first direction and spaced apart from each other in a third direction crossing the second direction, wherein the plurality of gate lines comprises a first gate line group and a second gate line group, the first gate line group is disposed in a first display area of the display panel in the second direction obliquely inclined toward the first direction, and the second gate line group is disposed in a second display area of the display panel in the second direction obliquely inclined toward the first direction; and a first gate driver configured to drive at least one gate line of the second gate line group in the second display area of the display panel while driving at least one gate line of the first gate line group in the first display area of the display panel, andwherein a first portion of a first gate line of the plurality of gate lines extends across the display panel at a first end from a first longer side of the display panel to a second end at a second longer side of the display panel, and a second portion of the first gate line extends across the display panel at a first end from ...

DISPLAY APPARATUS AND ELECTRONIC SYSTEM INCLUDING THE SAME

A display apparatus includes a display panel and a timing controller. The timing controller generates first output image data based on input image data and sets a driving frequency of the display panel as a first frequency in a first operation mode. The timing controller converts the input image data into second output image data and sets the driving frequency of the display panel as a second frequency lower than the first frequency in a second operation mode. The display panel displays a first image based on the first frequency and the first output image data in the first operation mode. The first image is represented by X grayscales. The display panel displays a second image based on the second frequency and the second output image data in the second operation mode. The second image is represented by Y grayscales, where Y is less than X. 1. A display apparatus comprising:a display panel; anda timing controller configured to, in a first operation mode, generate first output image data based on input image data and set a driving frequency of the display panel as a first frequency,the timing controller configured to, in a second operation mode, convert the input image data into second output image data and set the driving frequency of the display panel as a second frequency lower than the first frequency,wherein the display panel displays a first image based on the first frequency and the first output image data in the first operation mode, the first image being represented by X grayscales, where X is a natural number equal to or greater than two,wherein the display panel displays a second image based on the second frequency and the second output image data in the second operation mode, the second image being represented by Y grayscales, where Y is a natural number less than X.2. The display apparatus of claim 1 , wherein the display panel displays the second output image data based on a frame masking driving (FMD) scheme where second frames of the input image data ...

DISPLAY DEVICE AND POWER DELIVERY SYSTEM INCLUDING THE SAME

A display device includes an interface, a power supply, a switch arrangement, and a display. The interface is driven by driving power and receives image data from an external source. The power supply generates first and second power based on a first input power in a first mode and delivers the driving power to the interface in the first mode. The switch arrangement forms a first delivery path to deliver the first power from the power supply to the interface in the first mode The display receives the second power from the power supply when driven in the first mode and receives the image data from the interface. The switch arrangement forms a second delivery path to deliver second input power to the power supply in a second mode when the interface receives the second input power from the external source in the second mode. 1. A display device , comprising:an interface to be driven by a driving power and to receive image data from an external source;a power supply to generate first power and second power based on a first input power in a first mode, the power supply to supply the first power as the driving power to the interface, the first input power to be received from an external power supply in the first mode; anda switch arrangement to form a first delivery path to deliver the first power from the power supply to the interface in the first mode; anda display to receive the second power from the power supply and to be driven in the first mode and receive the image data from the interface to display an image, wherein the switch arrangement is to form a second delivery path to deliver a second input power to the power supply in a second mode when the interface receives the second input power from the external source, the driving power to be received from the external source in the second mode.2. The display device as claimed in claim 1 , wherein the switch arrangement includes:a first switch between an output terminal of the power supply and an input terminal of the ...

DISPLAY APPARATUS

A display apparatus includes gate lines extending in a first direction, data lines extending in a second direction crossing the first direction, first color pixels, and second color pixels. A first color pixel arranged in an f-th column between an f-th data line and an (f+)th data line is connected to one of the f-th data line and the (f+)th data line. A first color pixel arranged in a g-th column between a g-th data line and a (g+)th data line is connected to one of a (g−)th data line and a (g+)th data line. First color pixels in a first color pixel diagonal group receive data voltages having a same polarity. 1. A display apparatus comprising:a plurality of gate lines extending in a first direction;a plurality of data lines extending in a second direction crossing the first direction; and first color pixels configured to display a first color; and', 'second color pixels configured to display a second color different from the first color,, 'a plurality of pixels connected to the gate fines and the data lines, the plurality of pixels comprisingwherein a first color pixel from among the first color pixels arranged in an f-th (f is a natural number) column between an f-th data line and an (f+1)th data line is connected to one of the f-th data line and the (f+1)th data line,wherein a first color pixel from among the first color pixels arranged in a g-th (g is a natural number different from f) column between a g-th data line and a (g+1)th data line is connected to one of a (g−1)th data line and a (g+2)th data line,wherein first color pixels from among the first color pixels that are adjacent to each other in a third direction crossing the first and second directions form a first color pixel diagonal group, the first color pixels of the first color pixel diagonal group being configured to receive data voltages having a same polarity, andwherein second color pixels from among the second color pixels that are adjacent to each other in a fourth direction crossing the first, ...

Display substrate, display panel having the same, and method of testing a display substrate

A display substrate includes a gate wire, a data wire which crosses the gate wire, a display part, a dummy pixel part and a test part. The display part includes a pixel element electrically connected to the gate wire and the data wire, and the pixel element includes a display element. The dummy pixel part surrounds the display part to protect the pixel element from static electricity. The test part is formed adjacent to the display part and includes a test element having a test display element formed in a substantially same manner as the display element.

Display device and driving method thereof

Display device

A display device includes a memory, a signal controller, and a voltage generator. A plurality of data is stored in the memory. The signal controller detects a frame rate of an externally applied image data signal, selects data corresponding to the detected frame rate among the plurality of data, and outputs a control signal corresponding to the selected data. The voltage generator includes a DC-DC converter for determining an output voltage in correspondence to the control signal and a feedback circuit for determining a current flowing inside and a frequency of an outputted signal in correspondence to the control signal.

Display device

A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel.

Display device and method of manufacturing the same

Disclosed is a display device including a substrate, a thin film transistor formed on the substrate, a first electrode connected to the thin film transistor, an organic layer formed on the first electrode, a second electrode formed on the organic layer, a protection layer formed on the second electrode, and a transparent layer formed on the protection layer. The protection layer absorbs ultraviolet ray and protects the organic layer from the ultraviolet ray. The protection layer is formed by an evaporation process and thus reduces the damage of the organic layer during formation of the protection layer. The protection layer also protects the organic layer during formation of the transparent layer.

Display device and driving method thereof

Display substrate and fabricating method thereof

An exemplary embodiment of the present invention discloses a display substrate including a pixel connected to a first gate line and a data line. The pixel includes a first sub-pixel including a first liquid crystal capacitor and a first switching element including a gate electrode connected to the first gate line, a source electrode connected to the data line, and a drain electrode connected to the first liquid crystal capacitor. The pixel also includes a second sub-pixel including a second liquid crystal capacitor and a second switching element including a gate electrode connected to the first gate line, a source electrode connected to the data line, and a drain electrode connected to the second liquid crystal capacitor. The pixel further includes a controller including a control capacitor and a control switching element, the control switching element connected between a terminal of the control capacitor and the drain electrode of the second switching element. The control capacitor includes a first capacitor electrode and a second capacitor electrode. The first capacitor electrode is arranged on the same level on the display substrate as the gate electrode or is arranged on the same level on the display substrate as the source electrode and the drain electrode. The second capacitor electrode is arranged on the same level on the display substrate as a pixel electrode.

Display device, flexible member, and method thereof

A display device includes a display panel having a display region where an organic light emitting layer is formed and a non-display region, a circuit board which generates a reference voltage and a panel driving signal to be applied to the display panel, and a flexible member which connects the display panel to the circuit board. The display panel further includes a reference voltage pad which receives the reference voltage and formed on the non-display region, and the flexible member includes a flexible film, a data driving part seated on the flexible film, and a reference voltage lead formed on the flexible film to be connected to the reference voltage pad.