ЖИДКОКРИСТАЛЛИЧЕСКИЙ СПОСОБ И УСТРОЙСТВО ОТОБРАЖЕНИЯ

VERFAHREN ZUM ERZEUGEN VON SCHATTIERTEN FARBBILDERN AUF ANZEIGESCHIRMEN.

FLACHE BILDANZEIGETAFEL UND HERSTELLUNGSVERFAHREN

Methode und Vorrichtung für Bildschirm mit Grauwert-Anzeige.

Organisches elektrolumineszentes Bauteil-Steuerungsverfahren, organisches elektrolumineszentes Gerät und Anzeigevorrichtung

Local dimming on screens for improved image uniformity in scanning beam display systems

A display system has light sources that produce one or more optical beams (120). A signal modulation controller 320 modulates the beams to form optical pulses that carry images to be displayed. A screen (101) receives the beams to display images carried by the beams. An optical scanning module scans the beams onto the screen. The controller includes an image data storage device 1010 that stores data of the images to be displayed and operates to adjust optical energies of the optical pulses with respect to positions of the scanning beams on the screen to render the images. The controller also stores 1022 data of a predetermined spatial variation of each optical beam in connection with a location of the optical beam on the screen caused by one or more distortions in scanning the optical beam onto the screen. In addition to adjusting optical energies of the optical pulses for rendering the images, the controller adjusts optical energies of the optical pulses of at least one optical beam, based ...

Improvements in and relating to displays

Liquid crystal display

Light modulating devices

A ferroelectric liquid crystal display panel comprises an addressable matrix of pixels and an arrangement for selectively addressing each pixel within a series of addressing frames in order to vary the transmission level of the pixel relative to the transmission levels of the other pixels. The addressing arrangement utilises a temporal dither (TD) addressing scheme for addressing each pixel within each frame with different combinations of temporal dither signals applied to separately addressable temporal bits within the frame to produce different overall transmission levels. In order to limit the perceived errors at the transitions between different grey levels the TD addressing scheme is arranged to address a first pixel with a first combination of TD signals to produce a first grey level and to address a second pixel with a second combination of TD signals, which differs from the first combination of TD signals, to produce the same first grey level such that, during a transition between ...

Liquid crystal display

A ferroelectric liquid crystal display comprises an addressable matrix of pixels and addressing circuitry for selectively addressing each pixel in order to vary the transmission level of the pixel relative to the transmission levels of the other pixels. The addressing circuitry includes spatial and/or temporal dither circuits for addressing separately addressable subpixels with different spatial dither signals and/or for addressing each pixel or subpixel with different temporal dither signals in separate subframes. In addition to such spatial and/or temporal dither, the addressing circuitry switches each pixel or subpixel between different grey states corresponding to different transmission levels, with at least two of the bits of spatial or temporal dither being switchable between more than two different grey states and at least one bit being switchable between a lesser number of different grey states than the or each other bit, so that a plurality of different overall transmission levels ...

IMAGE DISPLAY APPARATUS

Liquid crystal apparatus and driving method therefor

A liquid crystal device comprises a plurality of picture elements A11-A55 comprising a ferroelectric liquid crystal showing a first stable orientation state and a second stable orientation state in response to an electric field thereto. The liquid crystal device is driven by applying a voltage signal capable of orienting the ferroelectric liquid crystal to the first orientation state to all or a part of the picture elements, applying an inversion voltage signal capable of inverting the ferroelectric liquid crystal oriented to the first orientation state to the second orientation state to selected picture elements, and variably controlling the waveform of the inversion voltage signal. Gradational display may be obtained by varying the pulse amplitude or the duty cycle. ...

INTERFACE DEVICE FOR CONVERTING THE FORMAT OF AN INPUT SIGNAL

Method of displaying images with gradiations of matrix-type display device using the same

DISPLAY APPARATUS HAVING A FLAT X-Y MATRIC DISPLAY PANEL

SPATIAL LIGHT MODULATOR WITH LOAD PUMP PIXEL CELL

IMAGE PROCESSING DEVICE, IMAGE PROCESSING PROCEDURE AND PROGRAM

PROCEDURE FOR THE ERROR DECREASE IN ANZEIGEGEÄTEN WITH MEHRREIHIGER CONTROL IN PARTIAL FIELDS

DEVICE AND PROCEDURE FOR THE ANNOUNCEMENT OF BINARY PICTURES

FULLCOLORED LED DIODE DISPLAY SYSTEM

DECREASE OF THE RANGE AND THE SIZE OF THE RASTER BUFFER MEMORY IN A DISPLAY SYSTEM WITH PULSE WIDTH MODULATION

LINE SCANNING IN A DISPLAY

IMAGE DISPLAY DEVICE WITH CAPACITIVE ENERGY RECOVERY

Display apparatus

System for digitally driving addressable pixel matrix

DRIVING METHOD FOR LIGHT EMITTING DEVICE, AND ELECTRONIC EQUIPMENT

A liquid crystal display

METHOD TO REDUCE PERCEPTUAL CONTOURING IN DISPLAY SYSTEMS

A method of pulse width modulation using a spatial light modulator (40) uith a finite transition time. The method uses m bits per sample to digitize the incoming data, but apportions the LSB times for pulse width modulation based upon m-1 bits. The current video frame displays all of the bits for each sample, except for the LSBs for each sample. The next video frame displays all of the bits for each sample, adding one more LSB for dividing up the frame time. The first frame could use either the additional LSB time and display no data, or it could use only that number of LSB times it needs. In the latter, the system will have to adjust to different partitions of the frame time for alternating frames. The system includes a spatial light modulator (40), a memory (42), a formatter (48), a sequence controller (44) and a toggle circuit (46), to perform this method.

DEVICE AND METHOD FOR DISPLAYING GRAY SHADES

A gray shade displaying device and a method of displaying gray shades wherein its circuit configurations can be simplified, thus reducing power consumption and related costs and allowing values of products using the device and method to be maintained high. By deciding color data corresponding to given image data using a color data determining means, by providing a display pattern corresponding to the color data using a pattern recognizing means, by deciding gray scale data providing a specified shade of gray by giving frame rate control to the color data through a frame rate controlling means and by employing an Extension register provided within the pattern recognizing means, whether an intermediate gray shade is displayed or not is decided. Furthermore, by deciding color data corresponding to given image data using a color data determining means, by providing a display pattern corresponding to the color data using a pattern recognizing means and by deciding gray scale data providing a ...

СПОСОБ И УСТРОЙСТВО ДЛЯ УПРАВЛЕНИЯ ЦИФРОВЫМ ДИСПЛЕЕМ

Данное изобретение обеспечивает способ и устройство для распределения импульсов сигнала с широтно-импульсной модуляцией по временному периоду. При применении к цифровому дисплею изобретение обеспечивает сигнал, представляющий цифровые данные, содержащие множество меньших импульсов, распределённых по временному периоду обновления, для управления элементом дисплея. Предусматривается логическая схема для генерирования множества комбинируемых сигналов, чтобы поступающие данные могли комбинироваться с сигналами для определения смеси сигналов, генерируемой в качестве конечного выхода. Отдельные сигналы генерируются путём идентификации активного бита самого низкого порядка счётчика, то есть подразделения подходящего временного периода на меньшие временные подразделения, и генерирования импульса на одном из множества выходов, при этом каждый уникальный идентифицированный бит самого низкого порядка выводится на отдельный выход, а последующие идентифицированные общие биты самого низкого порядка генерируют ...

Field sequential liquid crystal display and a driving method thereof

With the memory performance of the Image display device

The liquid crystal panel the display screen of the method and device

Display control method, display control apparatus, liquid crystal display apparatus

VIEWING SYSTEM

PROCESS Of POSTING Of a VIDEO IMAGE ON a NUMERICAL DISPLAY DEVICE

DISPLAY SYSTEM Of IMAGES IN HALF-TONES ON a MATRIC SCREEN

PROCEEDED Of POSTING Of a VIDEO IMAGE ON a BILL-POSTER FREQUENCY Of POSTING AUGMENTEE HAS

L'invention concerne un procédé d'affichage sur un afficheur à fréquence double, pendant deux trames consécutives T1 et T2, consistant : - à décomposer les niveaux de gris NGi relatifs à n cellules Ci d'une même colonne, n étant une puissance de 2, en une valeur commune VC et n valeurs VSi, tels que - à adresser ladite valeur VC sur les n cellules pendant le début de la trame T1 et lesdites n valeurs VSi séquentiellement auxdites n cellules pendant le début de la trame T2, et - à afficher un niveau de gris correspondant à la valeur VC dans les n cellules pendant la trame T1 et un niveau de gris correspondant à la valeur VSi dans chaque cellule Ci (1 à n), pendant la trame T2. Application aux afficheurs à cristaux liquides.

ELECTRO-OPTICAL DEVICE, METHOD OF DRIVING ELECTRO-OPTICAL DEVICE, AND ELECTRONIC APPARATUS

Apparatus and Method of Driving Liquid Crystal Display for Wide-Viewing Angle

A DISPLAY DEVICE

표시장치, 표시장치의 신호 제어장치 및 신호 제어방법

... 표시장치는 복수의 화소, 상기 복수의 화소에 연결되어 있는 복수의 주사 라인에 주사 신호를 순차적으로 인가하는 주사 구동부, 상기 복수의 화소에 연결되어 있는 복수의 데이터 라인에 상기 주사 신호에 대응한 데이터 신호를 인가하는 데이터 구동부, 및 영상 신호로부터 영상 파라미터를 산출하고, 상기 영상 파라미터를 이용하여단기 발광용 구동 제어신호 및 장기 발광용 구동 제어신호 중 어느 하나를 생성하여 상기 주사 구동부 및 상기 데이터 구동부에 전달하는 신호 제어부를 포함하고, 상기 단기 발광용 구동 제어신호는 한 프레임 동안 상기 복수의 화소가 발광하는 발광 기간을 제1 기간으로 제어하는 신호이고, 상기 장기 발광용 구동 제어신호는 상기 발광 기간을 상기 제1 기간보다 긴 제2 기간으로 제어하는 신호이다.

Display device and method of driving the same

LIGHT EMITTING DEVICE

PURPOSE: A light emitting device is provided to hold the reduction in electric charges at the gate electrode of an EL driving TFT by the leak current of a switching TFT, and prevent the reduction in light emitting luminance of an EL element. CONSTITUTION: Either one of a source region or a drain region of a switching TFT is connected to the input side of an SRAM. The output side of the SRAM and the gate electrode of the EL driving TFT are connected. The SRAM holds inputted digital data signals until next digital data signals are inputted. That is, the reduction in electric charges at the gate electrode of an EL driving TFT is by the leak current of a switching TFT can be prevented, and the reduction in light emitting luminance of an EL element is also prevented. © KIPO & JPO 2002 ...

FLAT PANEL DISPLAY DEVICE AND A METHOD OF CONTROLLING IMAGE QUALITY THEREOF, CAPABLE OF COMPENSATING FOR THE DEFECT OF A PANEL USING A REPAIR PROCESS

PURPOSE: A flat panel display device and a method of controlling image quality thereof are provided to compensate for the defect of a panel by implementing electrical compensation in the defect position. CONSTITUTION: A flat panel display device includes a display panel, a memory(122), first, second, and third compensation units(131,132,133), and a driver. The display panel includes at least one link pixels, which are interlinked with adjacent pixels and defect and non-defect areas. The memory stores first compensation data for compensating data to be displayed in the defect area, second compensation data for compensating data to be displayed in boundary areas between the defect and non-defect areas, and third compensation data for compensating data to be displayed in the link pixels. The first compensating unit adjusts data to be displayed in the defect areas by using the first compensation data through at least one of spatial and temporal distribution schemes of the first compensation ...

ELECTROPHORETIC DISPLAY PANEL

An electrophoretic display panel and a method for driving an electrophoretic display panel in which to bring an element from a preceding optical state to a grey scale in accordance with the image information Preset pulses and driving (grey scale pulses) are integrated into an integrated series of asymmetric (in respect of V=0) pulses. A more gradual introduction of grey scale is thereby achievable, reducing the suddenness of the transition from one image to another. © KIPO & WIPO 2007 ...

DISPLAY DEVICE, APPARATUS FOR SIGNAL CONTROL DEVICE OF THE SAME AND SIGNAL CONTROL METHOD

터치제어 기능을 구비한 액정 디스플레이 및 그 터치 검출 방법

... 본 발명은 터치제어 기능을 구비한 액정 디스플레이(10) 및 그 터치 검출 방법을 공개한다. 상기 액정 디스플레이(10)는 디스플레이 부재(11)와 터치 부재(12)를 포함하며, 디스플레이 부재(11)와 터치 부재(12)는 공통전극(13)을 공유하고, 디스플레이 부재(11)는 매 프레임에서 여러 번의 게이트 구동 및 그레이스케일 구동 동작을 순차적으로 실행하고, 터치 부재(12)는 디스플레이 부재(11)가 현재의 게이트 구동 및 그레이스케일 구동 동작을 실행하여 공통전극(13)상의 전압(Vcom)이 안정적인 상태에 처한 후, 터치 검출 동작을 실행한다. 상기 방식을 통해, 디스플레이 신호와 터치 신호의 상호 간섭을 저하시킬 수 있어, 디스플레이 품질과 터치 효과가 개선된다.

METHOD FOR SUBRASTER DISPLAY OF A VIDEO IMAGE WITH GRADATIONS ON A DIGITAL DISPLAY DEVICE WITH ARTIFACT REDUCTION

The invention concerns a method for displaying a video image on a digital display device during a video raster comprising at least two separate time segments to display a grey level. The cells of the device can selectively adopt an on-state or an off-state. Additionally, the cells can change states several time during a video raster. The invention is characterized in that the cells change state not more than once during each video raster time segment. The invention enables attenuation or elimination of perturbations related to temporal integration and sequential display of the R, G, B components of the video image. © KIPO & WIPO 2007 ...

DISPLAY PANEL, A DISPLAY DEVICE, AND A METHOD FOR DRIVING THE DISPLAY DEVICE USING A SWITCHING ELEMENT TURNED ON BY A COMPENSATION GATE SIGNAL

PURPOSE: A display panel, a display device, and a method for driving the display device are provided to suppress a motion blurring phenomenon by dropping a pixel voltage to a compensation pixel voltage. CONSTITUTION: A first switching element(TFT1) receives a gate signal from a gate line and a data signal from a data line. An LCD capacitor(CLC) is connected to the first switching element and charged by an initial pixel voltage corresponding to the data signal. A storage capacitor(CST) is parallel-connected to the LCD(Liquid Crystal Display) capacitor and maintains the charged voltage for a predetermined interval. A second switching element(TFT2) is driven in response to a compensation gate signal which is received from a compensation gate line which is parallel to the gate line. A compensation capacitor(CCO) is connected to the second switching element and decreases the initial pixel voltage to the compensation pixel voltage while the second switching element is turned on. © KIPO 2008 ...

Comparator circuit, a/d conversion circuit, and display device

Disclosed is a comparator circuit having: a first switch unit that selectively picks up a signal voltage; a second switch unit that selectively picks up a control waveform; a differential amplifier, the non-inverting input terminal of which is connected to the output terminals of the first switch unit and the second switch unit; a capacitance unit, one terminal of which is connected to the inverting input terminal of the differential amplifier, and the other terminal of which is supplied with a reference voltage; and a third switch unit that selectively provides a short-circuit between the inverting input terminal and the output terminal of the differential amplifier.

Digital driving of active matrix displays

CONTROL SYSTEM FOR MICROMIRROR DEVICE

This invention provides a display system that receives an image signal containing a binary data of N bits, wherein N is a positive integer, for displaying an image with a grayscale corresponding to the binary data. The display system further includes a data converter for converting M-bit of the N bits of the binary data into a non-binary data, wherein M is a positive integer and N>M, for applying the non-binary data as a sub-frame in controlling the gray scale in displaying the image. In an exemplary embodiment, the data converter converts consecutive M-bit of the N bits of the binary data into the non-binary data. The display system further includes a spatial light modulator (SLM) having a plurality of pixel elements and the SLM receiving the non-binary data of M bits for controlling the pixel elements.

ELECTRONIC DEVICE USING MOVEMENT OF PARTICLES

A method is provided of driving an electronic device comprising an array of device elements, each device element comprising particles which are moved to control a device element state, and each device element comprising a collector electrode, and an output electrode. The method comprises: in a reset phase, applying a first set of control signals to control the device to mo ve the particles to the a reset electrode; and in an addressing phase, applying a second set of control signals to control the device to move the particles from the reset electrode such that a desired number of particles are at the output electrode. The second set of control signals comprises a pulse waveform oscillating between first and second voltages in which the first voltage is for attracting the particles to the reset electrode and the second voltage is for attracting the particles from the reset electrode to the output electrode, and wherein the duty cycle of the pulse waveform determines the proportion of particles ...

DATA-DEPENDENT, LOGIC-LEVEL DRIVE SCHEME FOR DRIVING LCD PANELS

System and method for driving an LCD (150) using a data-dependent, logic-level drive scheme. A preferred embodiment comprises determining a desired state of each pixel (155-157) in an LCD pixel segment, deriving a drive waveform based upon the state of all pixels in the LCD pixel segment, and outputting the drive waveform to the LCD pixel segment. By using the states of all the pixels in the LCD pixel segment in the determination of the drive waveform, it is possible to increase the on and off voltage to help improve display quality.

PORTABLE MICRODISPLAY SYSTEM

An active matrix color crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix display is located in a portable microdisplay system. The image is written to the display therein causing the liquid crystal to move to a specific image position. A light source is flashed to illuminate the display. The pixel electrodes are set to a specific value to cause the liquid crystal to move towards a desired position. The process of writing, flashing, and setting the electrode intensity value to reorient the liquid crystal to produce an image is repeated. Portable system can include a digital camera, cellular telephone, cellular telephone with digital instant print, camcorder, heads up display, instant print camera and pager.

DISPLAY DEVICE WITH LCOS VALVE OF REDUCED SIZE

The present invention relates to the architecture of a valve of liquid crystal elements with pixel memory for front or rear projector. The valve (1) comprises elements arranged in rows and columns, each of the elements comprising a liquid crystal controlled by drive means so as to display video information relating to at least one image. According to the invention, one seeks to reduce the size of the drive means of the liquid crystals. Accordingly, capacitors and transistors of the drive means are shared in common between several elements of the valve. The video information intended to be displayed by each of the elements of the valve is coded as a common value (VC) shared by a group of at least two adjacent elements of the valve and a specific value (VS1, VS2) before being transmitted to the valve (1).

ELECROPHORETIC OR BI-STABLE DISPLAY DEVICE AND DRIVING METHOD THEREFOR

A drive circuit for a bi-stable display comprises: a driver (101, 102) which supplies drive waveforms (DWk) to the pixels (Pij) of the display during an image update period (IUk) wherein the image presented by the pixels (Pij) is updated. A controller (103) controls the driver (101, 102) to supply, during the image update period (IUk) wherein a particular optical transition of a particular one of the pixels (Pij) is required, an associated one of the drive waveforms (DWk) to the particular one of the pixels (Pij). The associated one of the drive waveforms (DWk) comprises a sequence of a particular number of pulse., (SPk), wherein consecutive ones of the pulses (SPk) of the sequence are separated by a separation period of time (SPT). The particular number of said pulses (SPk), and/or a duration of said pulses (SPk), and/or a duration of the separation period (SPT) of the associated one of the drive waveforms (DWk) is determined to obtain the particular optical transition at a desired energy ...

HIGH RESOLUTION ACTIVE MATRIX DISPLAY SYSTEM ON A CHIP WITH HIGH DUTY CYCLE FOR FULL BRIGHTNESS

An active matrix display device is disclosed. The display includes individual driver circuits for each pixel (100) to provide accurate, high resolution gray scale rendering and an almost 100 % duty cycle. The pixel circuit drivers (Figures 1(10), 2(20), 3(30), 4(40), 5(50), 6(60), 7(70) and 8(80)) minimize factors known to limit gray scale resolution, such as variations in threshold voltage, voltage drops in connecting lines and from leakage currents, and large peak currents. The present invention includes a line driver functioning initially as a low impedance voltage driver (Figure 6(60)), then converting to a high impedance current driver (Figure 6(60)). A method of driving a pixel (100) with sufficient circuitry to substain the pixel's light output at a gray level determined by the input data fed to the pixel (100) is also disclosed. The display is capable of processing both digital and anolog input data.

A DISPLAY APPARATUS WITH A DISPLAY DEVICE AND METHOD OF DRIVING THE DISPLAY DEVICE

A display apparatus (1) comprises a matrix display device (DD) with pixels (10) wherein particles (14) move in a fluid (13) between electrodes (6, 6', 7). An optical state of the pixels (10) is defined by a value of a drive voltage (VDi) and a duration (Di) of a drive period (TDi) during which the drive voltage (VDi) is present across the pixel (10). A DC-balancing circuit (3) controls the amplitudes of the drive voltages (VDi) and/or durations (Di) of drive periods (TDi) to obtain a substantially zero time-average value (N) across each pixel (10) or across each sub-group of pixels. This control of the amplitude of the drive voltages (VDi) and/or the duration (Di) of the drive periods (TDi) allows minimizing the image retention, without requiring reset pulses causing all pixels (10) to become temporarily white or black. In a preferred embodiment in accordance with the invention, a display device (DD) is used in which a drive voltage (VDi) is supplied to the pixel (10) with a level such ...

DRIVING METHOD FOR LIQUID CRYSTAL DISPLAY

In order to enable a liquid crystal panel (6) to execute a high-quality multi-gradational representation by a small-sized A/D converter (1), four fiducial voltage sets are arranged for a 4-bit A/D converter (1). The dither method in which arbitrary two of the fiducial voltage sets are switched per field to execute the A/D conversion is adopted for the display of a first pixel. Likewise, for an adjacent second pixel, the representation by the dither method is made by the use of the remaining two fiducial voltage sets. Hence, with the application of the dither method by the different fiducial voltage sets between the adjacent pixels, the area gradation is generated, thus making a 64-gradational display possible by the dither method and area gradation. Also, since the dither cycle is 1/30 second, a high quality display can be obtained without any flicker disturbance.

LIQUID CRYSTAL DISPLAY

A double-speed changing section (10) doubles the frequency of a video signal. A drive control circuit (34) creates PWM dimming frequency information according to a synchronizing signal outputted from the double-speed changing section (10) so that the relation between the PWM dimming frequency f and the black display ratio B may be f>=25B+250 and B>10 and sends the information to a PWM dimming signal generator circuit (17). A drive control circuit (34) drives a gate driver (12) and a source driver (13) for an image display period and a black display period defined by dividing one frame period. The PWM dimming signal generator circuit (17) generates a PWM dimming signal according to a synchronizing signal and the PWM dimming frequency information and sends it to an operating circuit (16). The operating circuit (16) operates and dims a back light unit (15) according to the PWM dimming signal. Thus the colored interference fringes of a liquid crystal display formed when the black insertion ...

Apparatus and method of driving liquid crystal display for wide-viewing angle

This invention relates to a method and apparatus for driving a liquid crystal display that is capable of improving the viewing angle by converting a gray scale having poor viewing angle characteristics into a gray scale combination having good viewing angle characteristics. A driving method of a liquid crystal display for wide viewing angle of the present invention, time-divides one frame into at least two sub-frames for driving the liquid crystal display such that an arbitrary main grayscale is expressed by the combination of the sub-grayscales expressed at each of at least two sub-frames. Accordingly, the grayscale with poor viewing angle characteristics is time-divided into at least two grayscales with good viewing angle characteristics and the liquid crystal display is driven, thereby improving the viewing angle.

Enhancements to optical flat panel displays

A circuit for implementing a registration-free, contiguous conductive plane. A circuit may include a plurality of conductive structures in a first plane. The circuit may further include a contiguous conductive equipotential surface in a second plane parallel to the first plane. The circuit may further include activation means configured to adjust an electric field between the first and second planes thereby activating one or more structures in the first plana by increasing a potential difference between the first and second planes to a threshold level deemed to constitute an active state. The circuit may further include deactivation means configured to adjust the electric field between the first and second planes thereby deactivating one or more structures in the first plane by decreasing the potential difference between the first and second planes below a threshold level deemed to constitute a deactivation state.

Electro-optical device, method of driving electro-optical device, and electronic apparatus

The present invention provides a technique to improve the display quality of an electro-optical device using an electro-optical element which emits light with a brightness corresponding to a driving current. Each pixel can include an organic EL element OLED which emits light with a brightness corresponding to a driving current, a capacitor for storing an electric charge corresponding to data supplied via a data line, a drive transistor for setting a driving current according to the electric charge stored in the capacitor and for supplying the set driving current to the organic EL element OLED, and a control transistor which repeats interruption of a current path for the driving current in one vertical scanning period.

Matrix addressable display having pulse number modulation

A current controlled field emission display includes a controller that provides a pair of pulsed clocking signals that allows current to flow from ground potential to an emitter in the field emission display during each clocking signal pulse. The number of electrons, and thus the intensity of the light will depend upon the number N of clocking signal pulses during an activation interval. In one embodiment, each of the pulsed signals includes a number N of pulses that corresponds to a desired intensity of pixels. The pulsed signals are formed by gating a clock signal in response to digital data applied to the display such that the transfer of electrons is controlled directly by the digital data. In another embodiment, the pulsed signals are produced by comparing a decoded image signal to counts from a high speed counter.

Data stream converter with increased grey levels

The present invention relates to An apparatus for converting cathode ray tube (CRT) to a dual panel data stream to be utilized. The present invention includes a frame buffer system for displaying data on a dual panel display, which comprises an upper and lower panel. The frame buffer system receives CRT data and displays panel refresh data in which one CRT frame generates one panel refresh frame. Through the use of this system, An increased number of gray level patterns can be provided, thereby increasing image resolution and quality.

Display device and driving circuit for displaying

A frame memory 105 stores the original image data received from a higher-level device 102 via an interface 103. Color reduction processing means receives color reduction rate data through a transfer from an upper-level device 102 or manual setting means such as a switch or jumper settings. Based on this color reduction rate data, the number of colors in the gradation data of the original image is reduced, and the color count of the original image is simulated using the reduced color count. Also included are a timing generating circuit 106 and a gradation voltage generating circuit 107. A gradation voltage selector 108 performs a partial halting of driver operations based on the color reduction rate.

Liquid crystal display drive method

There is provided a liquid crystal display drive method that uses a drive voltage waveform consisting of a display signal period (display waveform 32 bits) and a control signal period irrelevant to display (control waveform 2 bits) in a given time or a period of plural frames or one frame. This method suppresses generation of internal DC voltage and thus prevents impurity ions from deteriorating the quality of displayed pictures.

Liquid crystal display device and driving method thereof

It is one of objects to provide a liquid crystal display device capable of low power consumption, with a driver circuit having a new circuit structure and a pixel. In the liquid crystal display device displaying an image using an n bit digital image signal (n is an integer), by incorporating nxm storage circuits (m is an integer) per pixel, it comprises a function of storing an m frame digital image signal in the pixel (in the illustrated figure of an example where n=3, m=2, 3 bitsx2 frames are stored in storage circuits A 1 to A 3 , and B 1 to B 3 ). Therefore, in the display of a still image, by repeatedly reading the digital image signal stored temporarily in the storage circuit and displaying in each frame, the drive during such time of a source signal line driver circuit is stopped, to reduce the power consumption of the liquid crystal display device.

Active matrix light-emitting device and a driving method thereof

An active matrix light emitting device which is capable of clear color display of multiple gray scales and a driving method hereof is provided. The light emitting device has a pixel portion, and the pixel portion has a plurality of pixels. Each of the plurality of pixels has an EL element, a first EL driver TFT, a second EL driver TFT, a switching TFT, and an erasure TFT. The first EL driver TFT and the second EL driver TFT are connected in parallel. The method of driving the device includes inputting a digital video signal outputted from a source signal line driver circuit, and forming n write-in periods and (m-1) erasure periods within one frame period, wherein m is an arbitrary number from 2 to n, wherein display and non-display periods are specifically defined, and wherein the plurality of EL elements are selected to emit light or not to emit light in the display periods in accordance with the digital video signal.

Temperature estimating apparatus, a method of estimating a temperature, and a display system including the temperature estimating apparatus

A temperature estimating apparatus includes an average data outputting circuit configured to output average data of image data displayed on a display panel. The temperature estimating apparatus further includes a change amount outputting circuit configured to determine a change amount of the average data, and to output an average data change amount. The temperature estimating apparatus additionally includes a luminance outputting circuit configured to convert the average data change amount to a luminance, and to output the luminance. The temperature estimating apparatus further includes a temperature sensor configured to sense an ambient temperature of the display panel, and to output the ambient temperature. The temperature estimating apparatus additionally includes a current temperature outputting circuit configured to determine a current temperature of the display panel based on a previous temperature of the display panel, the luminance and the ambient temperature.

Electronic Device and Method of Driving the Same

To provide a novel driving method for driving an electronic device by using digital gray scale and time gray scale in combination, which secures high duty ratio, which can display an image normally even when a sustain period is shorter than an address period, and which is hardly affected by dulled signal waveform. In a sub-frame period (102) where a sustain period is shorter than an address period, a clear period (105) is squeezed in between completion of a sustain period (104) and start of an address period of the subsequent sub-frame period. The length of the sustain period (104) thus can be set without being limited by the length of an address period (103). This non-display period is provided by changing the electric potential of a storage capacitor line. Therefore, unlike the case where the non-display period is provided by changing the electric potential of a cathode wiring, the present invention is hardly affected by dulled signal waveform.

Cyber-enabled displays for intelligent transportation systems

A display system that produces an image that encodes both machine-readable and human-readable data is described. The image has two underlying patterns that are changed at two different rates. The rapidly changing image encodes the machine-readable data and the slower changing image encodes the human-readable data.

Method for controlling electro-optic device, device for controlling electro-optic device, electro-optic device, and electronic apparatus

A method for controlling an electro-optic device switches between a first driving scheme for changing an optical state between a-number of optical states and a second driving scheme for changing an optical state between b-number of optical states (b>a). In the first driving scheme, an integrated value W (A→B) of drive voltage and drive time when changing an optical state A to an optical state B, and an integrated value W (B→A) of drive voltage and drive time when changing the pixel from the optical state B to the optical state A satisfy a relation of W (A→B)=−W (B→A), and the integrated value W (A→B) and W (B→A) for the optical state A and B in the second driving scheme are equal to the integrated value W (A→B) and W (B→A) in the first driving scheme, respectively.

DRIVING CIRCUIT FOR REAL-TIME EXTERNAL COMPENSATION AND ELECTROLUMINESCENT DISPLAY INCLUDING THE SAME

A driving circuit for real-time external compensation and an electroluminescent display including the same are disclosed. The driving circuit includes a timing controller generating a gate shift clock group, a gate start pulse, and first and second selection signals and a gate driver generating a gate signal based on the control of the timing controller and supplying the gate signal to a display panel. The gate driver includes a plurality of stages which shifts the gate start pulse in accordance with the gate shift clock group to generate an output signal and supplies the output signal to a first output node, a first output control switch connected between a second output node connected to a gate line of the display panel and the first output node, and a second output control switch connected between the second output node and an input terminal of a gate low voltage. 1. A driving circuit , comprising:a timing controller configured to generate a gate shift clock group, a gate start pulse, a first selection signal and a second selection signal; and a plurality of stages configured to shift the gate start pulse in accordance with clock signals of the gate shift clock group to generate an output signal and supply the output signal to a first output node,', 'a first output control switch connected between a second output node connected to a gate line of the display panel and the first output node, the first output control switch being turned on in response to the first selection signal to connect the first output node to the gate line, and', 'a second output control switch connected between the second output node and an input terminal of a gate low voltage, the second output control switch being turned on in response to the second selection signal to connect the input terminal of the gate low voltage to the gate line., 'a gate driver configured to generate a gate signal based on at least one of the gate shift clock group, the gate start pulse, the first selection signal ...

DISPLAY DEVICE

A display device includes an auto current limiter (ACL) circuit and a luminance control circuit. The ACL circuit acquires a first parameter on the basis of luminance-related data of input image data, and then acquires a second parameter by applying a luminance control parameter from the luminance control circuit to the first parameter. The ACL circuit corrects the input image data by a second correction function acquired from the second parameter.

Display apparatus and control method thereof

A display apparatus is provided including a display panel, a memory configured to store first image quality compensation data corresponding to a driving frequency of the display panel, and second image quality compensation data corresponding to a frame frequency of an input image to the display panel, the second image quality compensation data corresponding to the first image quality compensation data adjusted based on a luminance value of the input image, and a timing controller configured to, based on the frame frequency of the image input to the display panel being varied, perform image quality compensation on the input image using the second image quality compensation data, and to control the display panel to display the input image based on the image quality compensation.

Plasma display panel and method of driving the same

A driving method of the present invention is adapted to a plasma display panel which includes first and second electrodes formed on a substrate, third electrodes formed in a direction intersecting the first and second electrodes, and a dielectric layer covering the first and second electrodes. The driving method includes the steps of generating an address discharge between the first and the third electrode to select a predetermined cell and sustain discharges between the first and the second electrode to produce light for display, and controlling the plasma display panel such that the discharge intensity of a sustain discharge in which the second electrode serves as the anode is smaller than the discharge intensity of a sustain discharge in which the first electrode serves as the anode.

Light Emitting Device

An object of the present invention is to provide a light emitting device that is able to suppress power consumption while a balance of white light is kept, without making a configuration of a power source circuit complicated. A power source potential corresponding to each color of a light emitting element is used as a higher electric potential of a video signal and an electric potential of a power source line in the case that a transistor for controlling a supply of electric current to the light emitting element is a p-channel TFT. Conversely, a power source potential corresponding to each color of a light emitting element is used as a lower electric potential of a video signal and an electric potential of a power source line in the case that a transistor for controlling a supply of electric current to the light emitting element is an n-channel TFT.

LIGHT SCREENING APPARATUS AND ELECTRONIC DEVICE INCLUDING THE SAME

A light screening apparatus and an electronic device including the light screening apparatus are provided, where the electronic device could be an imaging device or a display device. The light screening apparatus includes a base plate, a rollup blade, and a driving unit. The base plate includes a lower electrode and a light transmitting portion through which light passes. The rollup blade includes an upper electrode and at least two layers having different optical properties. The driving portion is electrically connected to the base plate and the rollup blade, and it controls the amount of light passing through the light transmitting portion of the base plate. The outer circumferential surface of the rollup blade, when in a rolled-up position, may be an anti-reflection surface.

Display device and arranging method for image data thereof

A display device including a display panel having first pixels emitting light in a first field and second pixels emitting light in a second field is disclosed. According to one aspect, the display device includes a controller configured to extract first field data transmitted to the first pixels and second field data transmitted to the second pixels from input data, divide the first field data, insert black data between two neighboring first field data to generate first output data, divide the second field data, and insert black data between two neighboring second field data to generate second output data. The display device also includes a data driver configured to transmit a first data signal based on the first output data to the display panel in the first field and transmitting a second data signal based on the second output data to the display panel in the second field.

Pixel circuit for an active matrix OLED display

A circuit arrangement for organic light-emitting diodes can be arranged in a two-dimensional matrix. It can in particular be used with microdisplays. It can allow a wide influencing of the brightness of the electromagnetic radiation emitted by the organic light-emitting diodes. Every organic light-emitting diode can be controlled by means of a storage circuit, a sense amplifier and a driver circuit using the circuit arrangement. The driver circuit can be formed by at least three transistors connected in series and a further output transistor whose drain is connected to the anode of the respective organic light-emitting diode. In this respect, the transistor acting as the driver can have a constant electric operating voltage LVDD applied at its source and a further likewise constant electric operating voltage Vdrive is applied to its gate. The drain of the first transistor to the source of the following transistor connected to it in series and the two gates of the following transistors which ...

INFORMATION DISPLAY DRIVE METHOD

When information of one frame such as an image is displayed by performing a scanning operation with respect to line electrodes consisting of a plurality of electrodes extending in a line direction on one substrate and column electrodes consisting of a plurality electrodes extending in a column direction on the other substrate in such a manner that a voltage is applied to the line electrodes from one end to the other end, a voltage for generating a cross-talk in the first color and a voltage for generating a cross-talk in the second color are applied to all the cells of a display portion once or more times respectively after one frame is displayed. Specifically, two or more lines are added at the end of the scanning operation, and a drive, in which a display of the first color and a display of the second color are performed one or more times respectively, is performed after one scanning operation is finished (first aspect). Moreover, as a driving voltage applied to the electrodes for generating ...

DRIVING LIQUID CRYSTAL MATERIALS USING LOW VOLTAGES

MEMORY CONTROLLER AND DATA DRIVER FOR FLAT PANEL DISPLAY

SIGNAL LINE DRIVE CIRCUIT AND LIGHT EMITTING DEVICE

Panel type color display device and system for processing image information

DRIVING METHOD, DRIVING CIRCUIT FOR LIQUID CRYSTAL DEVICE AND DISPLAY DEVICE

PROBLEM TO BE SOLVED: To provide a display device capable of performing gradation display satisfactorily without generating contrast reduction, display flicker, cross talk or the like in the driving method of a liquid crystal element or the like and a display device, especially in the display device performing the gradation display. SOLUTION: In this driving method, a liquid crystal element or the like which is to be constituted by interposing a liquid crystal layer between a substrate having scanning electrodes X1, X2... and a substrate having signal electrodes Y1, Y2... is multiplexingly driven. In this case, plural lines of scanning electrodes are simultaneously selected successively and also the selection period is, for example, divided into three periods and a display device performs gradation display by deciding voltage levels of two divisions among divided selections according to upper bits of display data and by deciding the voltage level as to the remaining division according to ...

DISPLAY DEVICE

PURPOSE: To reduce the power consumption of a display device by eliminating the futile charge and discharge of a column electrode capacitor and decreasing the number of times of the futile charge and discharge of a column electrode capacitor in a non-driving period of not contributing to the charge of a pixel electrode. CONSTITUTION: Pulse signals having different duty ratio and outputted from the pulse signal generating circuit 1 of a gradation signal generating circuit are masked with a non-driving period masking signal MS by means of an AND circuit 2 and the changeover of a voltage for applying on a column electrode by a column electrode driving circuit is suppressed in a non-driving period not contributing to the charge of a pixel electrode. The clock cycle changeover circuit of the gradation signal generating circuit changes the period of a clock signal supplied to the pulse signal generating circuit 1 and elongates the switching period of the voltage applied on the column electrode ...

Flüssigkristallanzeigesteuergerät mit Unterrahmen-Steuerung

Anzeigegerät zur Erzeugung von zwischenliegenden Graustufen und Verfahren zur Verarbeitung von Bildsignalen

Gradations of pixel brightness in liquid crystal matrix display - can be easily produced by dividing timing period into 3 unequal sub-periods and biassing pixel for combination

The matrix display features a circuit (22) to set up a long display period (3T) and a circuit (23) to subdivide this into image-periods (4T/5, T, 6T/5). The display period contains a number of image-periods of different time duration which define the time during which the bias-signals are applied to the pixel. The brightness or depth of colour of each of the pixels, which may be combined into a basic display element, is controlled through the long display period. The brightness or depth of colour of the pixels is defined by the effective bias applied0 between the 2 conductors (x and y) between which the liquid crystal material is placed. USE/ADVANTAGE - The method makes it possible to produce gradations of brightness and/or colour which do not produce flicker. The method is easy to implement . The unequal time periods increase the number of unequal combinations available per display-period.

Verbesserung zur Energiesparung in einer Anzeigevorrichtung mit aktiver Matrix mit Grauwerten

Apparat und Verfahren für ein digitalisiertes Videosystem

Image display device having memory property

An image display device expresses multiple colors including intermediate colors and an electrophoretic particle making up the image display device includes n-kinds of (n>2) charged particles each having colors and threshold value voltages each being different from one another. A specified period during which a voltage is applied includes a resetting period for applying a resetting voltage, a first, . . . , k th , . . . , n th voltage applying periods and a voltage to be applied includes a resetting voltage, OV, first voltage (absolute value) to be applied within the first voltage applying period, OV, k th voltage (absolute value) to be applied within k th voltage applying period, and OV voltage, n th voltage (absolute value) to be applied within an n th voltage applying period. Relationships: |first applied voltage|>| k th applied voltage|>| n th voltage| and |first applied voltage|<| k th voltage|<| n th voltage| are satisfied.

Mitigation of artifacts in pwm illumination imaging

A system and method for reducing pulse width modulation contouring artifacts. Each input intensity value is translated to at least one non-binary bit pattern for display. Many of the input intensity values are translated to at least two alternate non-binary bit patterns. The alternate codes are used to smooth the transition between intensity codes as major bits are turned on. The smoothing occurs by the gradual transition from codes that do not use the major bit to codes that do use the major bit. Typically the alternate codes are selected based on the location of the pixel in a spatial pattern ( 100 ) and the alternate codes are spatially alternated from one pixel ( 102 ) to the next ( 104 ). Other embodiments temporally alternate the codes from one period—typically a frame period—to the next. Still other embodiments alternate the codes both spatially and temporally.

Display drive with permutation and superposition gray-level control

A display driver circuitry with permutation and superposition gray-level control comprises a gray-level controller. The controller may comprise a permutation and superposition adder configured to divide N-bit gray-level data G into M most significant bits, serving as a superposition reference G H , and (N-M) least significant bits, serving as a superposition increment G L , and to superpose superposition values X i onto G H to derive pieces of scan data G i for S scan operations; an overflow bit setting unit configured to set an overflow bit F; and an output unit configured to output the scan data G i . A display driven this way has an improved refreshing frequency with the same gray-level reproduction ability as PWM-based schemes. Further, the duration of each scan operation, or scan period, is constant, resulting in convenience in software implementations. Furthermore, the pulse width representative of the gray-level value is determined by superposition of the scan operations.

Display device and memory arranging method for image data thereof

A display device and an image data memory arrangement method thereof are disclosed. When driving one frame with first and second fields, an input data signal is divided into first and second field data and the first and second field data are respectively arranged according to a light emitting driving sequence to control the light emitting for each field to be displayed. The first and second field data signals respectively include a color data signal pattern in which the data signals transmitted to the pixels corresponding to the same pixel column among the pixels respectively included in the first pixel row and the fourth pixel row display the same color, and the data signals transmitted to the pixels corresponding to the same pixel column among the pixels respectively included in the second pixel row and the third pixel row display the same color.

Display device and arranging method for image data thereof

A display device including a display panel having first pixels emitting light in a first field and second pixels emitting light in a second field is disclosed. According to one aspect, the display device includes a controller configured to extract first field data transmitted to the first pixels and second field data transmitted to the second pixels from input data, divide the first field data, insert black data between two neighboring first field data to generate first output data, divide the second field data, and insert black data between two neighboring second field data to generate second output data. The display device also includes a data driver configured to transmit a first data signal based on the first output data to the display panel in the first field and transmitting a second data signal based on the second output data to the display panel in the second field.

LIQUID CRYSTAL DISPLAY

A liquid crystal panel includes a pixel electrode, a common electrode, a plurality of data lines, a plurality of pixel selection lines, and a pixel switching unit. A driving device includes a data line driving unit, a pixel selection line driving unit, a voltage generation unit for generating various voltages used for the data line driving unit, the pixel selection line driving unit, and the common electrode, and a control unit. The control unit has an input discrimination unit for discriminating between an input state where a video signal is inputted and a non-input state where the video signal is not inputted, and a regulation unit for regulating a potential difference between the pixel electrode and the common electrode to zero with respect to the plurality of pixels in the non-input state. 1. A liquid crystal display , comprising:a liquid crystal panel including a plurality of pixel electrodes provided with respect to a plurality of pixels respectively, a common electrode for supplying said plurality of pixels with a common voltage, a plurality of data lines, a plurality of pixel selection lines, and a plurality of pixel switching units provided with respect to said plurality of pixels respectively, each of said plurality of said pixel switching units having one end connected to a corresponding pixel electrode, the other end connected to a predetermined data line, and a control end connected to a predetermined pixel selection line, for controlling conduction between said one end and said other end; anda driving device for driving said liquid crystal panel,wherein said driving device includesa data line driving unit for driving said plurality of data lines;a pixel selection line driving unit for driving said plurality of pixel selection lines to control said plurality of pixel switching units;a voltage generation unit for generating various voltages used for said data line driving unit, said pixel selection line driving unit, and said common electrode; anda ...

DISPLAY APPARATUS AND CONTROLLING METHOD THEREOF

Disclosed is a display apparatus in which each pixel corresponds to at least one light-emitting element. The display apparatus includes a display including a plurality of pixels, a driver configured to drive a plurality of light-emitting elements constituting the plurality of pixels, and a processor configured to control the driver to drive the plurality of light-emitting elements based on a first pulse width modulation signal having a duty corresponding to a grayscale of an input image, and to control the driver to drive light-emitting elements constituting a specific pixel, among the plurality of pixels, using a second PWM signal having a duty corresponding to the grayscale of the input image, wherein a frequency of the first PWM signal is different from a frequency of the second PWM signal. 1. A display apparatus in which each pixel corresponds to one or more light-emitting elements , the display apparatus comprising:a display including a plurality of pixels;a driver configured to drive a plurality of light-emitting elements corresponding to the plurality of pixels; and control the driver to drive one or more light-emitting elements corresponding to a first pixel, among the plurality of pixels, based on a first pulse width modulation (PWM) signal having a duty corresponding to a grayscale of an input image,', 'control the driver to drive one or more light-emitting elements corresponding to a second pixel, among the plurality of pixels, based on a second PWM signal having the duty corresponding to the grayscale of the input image,, 'a processor configured towherein a frequency of the first PWM signal is different from a frequency of the second PWM signal.2. The display apparatus of claim 1 , wherein the processor is configured to divide the plurality of pixels into a plurality of groups claim 1 , and to control the driver to drive light-emitting elements corresponding to pixels of one or more groups among the plurality of groups based on the second PWM signal.3. ...

Methods and systems for controlling interferometric modulators of reflective display devices

The current disclosure is directed to systems and methods that process standard video signal data and that control a reflective display panel to brightly display videos and images in colors selected from a broad range of colors. In certain implementations, an input video/image signal is first transformed from a RGB encoding to an encoding based on a new color system that encodes colors using spectral, black, and white components. The reflective display panel includes an array of pixels, with each pixel comprising one or more self-parallelizing interferometric modulators (“SPIMs”). Each SPIM contains a plurality of electrodes disposed on a bottom plate, a fixed top plate, and a movable plate separated by a cavity. Appropriate voltages are applied to the electrodes to vary the cavity depth of the SPIM in order for the SPIM to reflect a color of a particular wavelength or to appear black or white.

LIQUID CRYSTAL DISPLAY DEVICE

An active matrix substrate (A) of a liquid crystal display device () includes: drive electrodes (A, B) a pair of which are arranged in each pixel; pixel electrodes () each of which is provided in each pixel; first switching elements (A) each of which is connected to one of the pair of drive electrode (A); second switching elements (B) each of which is connected to the other drive electrode (B); third switching elements (C) connected to the pixel electrodes (); first source lines (A) connected to the group of the first switching elements (); second source lines (B) connected to the group of the second switching elements (B); third source lines (C) connected to the group of the third switching elements (C); and a plurality of gate lines (). 1. A liquid crystal display device comprising:an active matrix substrate having a display region in which a plurality of pixel arrays are arranged, each pixel array being formed with a plurality of pixels aligned;a counter substrate arranged so as to be opposed to the active matrix substrate; anda liquid crystal layer sealed between the active matrix substrate and the counter substrate, drive electrodes a pair of which are arranged in each pixel on an insulating layer;', 'pixel electrodes each of which is provided in each pixel on a side opposite to the pair of drive electrodes, with the insulating layer being interposed there between;', 'first switching elements each of which is connected to one of the pair of drive electrodes in each pixel;', 'second switching elements each of which is connected to the other of the pair of the drive electrodes in each pixel;', 'third switching elements each of which is connected to the pixel electrode in each pixel;', 'first source lines each of which is provided in each pixel array, the first source line being connected to a group of the first switching elements of a group of the pixels included in each pixel array;', 'second source lines each of which is provided in each pixel array, the second ...

Systems, methods, and devices for controlling object update rates in a display screen

A display system includes a display, a content component, a focus region component, and a refresh rate component. The display is configured to selectively display information with refresh rates that vary across a plurality of display regions of the display screen. The content component is configured to receive content for display on the display screen and to provide the content to the display. The focus region component is configured to determine a focus region of a user in relation to the display screen. The focus region includes one of the plurality of display regions at which a user is likely looking. The refresh rate component is configured to select the refresh rates of the display elements in the plurality of display regions. A refresh rate in the focus region may be different than a refresh rate in one or more other display regions of the plurality of display regions.

DISPLAY APPARATUS AND DRIVING METHOD THEREOF

A display apparatus and a driving method thereof are provided. A data driving chip provides a plurality of data voltages to a plurality of multiplexers through a plurality of output lines. When the display apparatus displays a pure gray pattern, the data voltages are alternately provided to a first data line group and a second data line group during a scan line driving period of each of the scan lines to make two adjacent pixels have different polarities. During a blank period, a plurality of data lines corresponding to a plurality of pixels having the same color and the same polarity on two adjacent scan lines are electrically coupled to each other through the data driving chip to share charges. 1. A display apparatus , comprising:a plurality of scan lines;a first data line group comprising a plurality of first data lines;a second data line group comprising a plurality of second data lines;a plurality of pixels disposed on intersections of the plurality of scan lines and the plurality of data lines and electrically coupled to the plurality of scan lines and the plurality of data lines corresponding to the plurality of pixels;a plurality of multiplexers respectively electrically coupled to the plurality of first data lines and the plurality of second data lines corresponding to the plurality of multiplexers, the plurality of multiplexers alternately providing a plurality of data voltages to the first data line group and the second data line group during a scan line driving period of each of the plurality of scan lines; anda data driving chip having a plurality of output lines, the plurality of output lines being respectively electrically coupled to the plurality of multiplexers and providing a plurality of data voltages to the plurality of multiplexers, wherein two adjacent output lines of the plurality of output lines provide data voltages with different polarities, so that two adjacent pixels of the plurality of pixels have different polarities, wherein when the ...

Illumination Devices and Related Systems and Methods

Illumination devices and related systems and methods are disclosed that can be used for LCD (Liquid Crystal Display) backlights, LED lamps, or other applications. The illumination devices can include a photo detector, such as a photodiode or an LED or other light detecting device, and one or more LEDs of different colors. A related method can be implemented using these illumination devices to maintain precise color produced by the blended emissions from such LEDs. One application for the illumination devices is backlighting for FSC (Field Sequential Color) LCDs (Liquid Crystal Displays). FSC LCDs temporally mix the colors in an image by sequentially loading the red, green, and blue pixel data of an image in the panel and flashing the different colors of an RGB backlight. Precise and uniform color temperature across such a display can be advantageously maintained by continually monitoring ratios of photodiode currents induced by the different colored LEDs in each illumination device as each color is flashed.

REDUCED BLUR, LOW FLICKER DISPLAY SYSTEM

A reduced blur, low flicker display system is provided, comprising: a display device comprising an array of pixel devices, each configured to be driven to a given output intensity value by changing each of the pixel devices between at least two intensity values within an image frame, including: a first intensity value and a second intensity value, higher than the first intensity value; and, a computing device configured to: spatially drive the pixel devices, according to image frames of image data, on a pixel-by-pixel basis and independent of one another, to respective output intensity values, according to at least two different spatio-temporal driving modes within a same image frame, a first set of the pixel devices driven according to a first spatio-temporal driving mode, and a second set of the pixel devices driven according to a second spatio-temporal driving mode, each within the same image frame. 1. A display system comprising:a display device comprising an array of pixel devices, each of the pixel devices configured to be driven to a given output intensity value by changing each of the pixel devices between at least two intensity values within an image frame, the at least two intensity values including: a first intensity value and a second intensity value, the second intensity value higher than the first intensity value; and, 'spatially drive the pixel devices, according to image frames of image data, on a pixel-by-pixel basis and independent of one another, to respective output intensity values, according to at least two different spatio-temporal driving modes within a same image frame, a first set of the pixel devices driven according to a first spatio-temporal driving mode within the same image frame, and a second set of the pixel devices driven according to a second spatio-temporal driving mode within the same image frame.', 'a computing device configured to2. The display system of claim 1 , wherein the at least two different spatio-temporal driving modes ...

DISPLAY DEVICE

A display device includes a plurality of pixels. One of the pixels includes a light emitting diode and a driving circuit coupled to the light emitting diode. A display frame period includes at least two emission periods. The light emitting diode emits light according to a data signal including a gray level in each of the at least two emission periods. 1. A display device , comprising: a light emitting diode; and', 'a driving circuit coupled to the light emitting diode;, 'a plurality of pixels, wherein one of the plurality of pixels compriseswherein a display frame period comprises at least two emission periods;wherein the light emitting diode emits a light according to a data signal comprising a gray level in each of the at least two emission periods.2. The display device of claim 1 , wherein the emission periods are equally in the display frame period with a variation of 10% or smaller off.3. The display device of claim 1 , wherein the emission periods are not equally in the display frame period with a variation within 10% to a stated value being equal.4. The display device of claim 1 , wherein the emission cycles are uniformly distributed in the display frame period with a variation within 10% to a stated value being uniform.5. The display device of claim 1 , wherein the emission cycles are non-uniformly distributed in the display frame period.6. The display device of claim 1 , wherein the at least two emission periods for abutting two of the plurality of pixels in a column direction claim 1 , a row direction claim 1 , or a diagonal direction are staggered.7. A display device claim 1 , comprising: a light emitting diode; and', 'a driving circuit coupled to the light emitting diode;, 'a plurality of pixels, wherein one of the plurality of pixels compriseswherein the plurality of pixels comprises a first pixel and a second pixel being abutting in a column direction of a pixel column, a row direction of a pixel row, or a diagonal direction,wherein the first pixel ...

DISPLAY DRIVER, AND DISPLAY DEVICE AND SYSTEM INCLUDING THE SAME

A display driver and a display device and system including the same are provided. The display driver includes an interface circuit configured to receive image data from a host; a graphics memory configured to store m-bit data per pixel corresponding to the received image data, where m being an integer greater than zero; a color converter configured to convert the m-bit data per pixel stored in the graphics memory into n-bit data per pixel and to output n-bit converted data, n being an integer greater than m; a selector configured to selectively output one among the n-bit converted data and the image data received from the host; and a source driver configured to drive a display panel based on output data of the selector. 1. A display driver comprising:an interface circuit configured to receive image data from a host;a graphics memory configured to store m-bit data per pixel corresponding to the received image data, m being an integer greater than zero;a color converter configured to convert the m-bit data per pixel stored in the graphics memory into n-bit data per pixel and to output n-bit converted data, n being an integer greater than m;a selector configured to selectively output one among the n-bit converted data and the image data received from the host; anda source driver configured to drive a display panel based on output data of the selector.2. The display driver of claim 1 , further comprising a register configured to store a register setting claim 1 ,wherein the color converter is further configured to convert the n-bit data according to the register setting.3. The display driver of claim 1 , wherein the color converter is further configured to output first predetermined RGB data as the n-bit converted data in response to the m-bit data per pixel being one claim 1 , and output second predetermined RGB data as the n-bit converted data in response to the m-bit data per pixel being zero.4. The display driver of claim 1 , wherein integer m being one; andthe ...

DISPLAY APPARATUS AND DRIVING METHOD

A display device includes a display panel including a plurality of sub-pixels, a grayscale conversion part configured to generate a data signal displaying different grayscales to the sub-pixels at a predetermined time interval, and a data driver configured to convert the data signal into a data voltage and to output the data voltage to the display panel. 1. A display apparatus comprising:a display panel including a plurality of sub-pixels and configured to display an image;a grayscale conversion part configured to generate a data signal displaying different grayscales to the plurality of sub-pixels at a predetermined time interval; anda data driver configured to convert the data signal into a data voltage and to output the data voltage to the display panel.2. The display apparatus of claim 1 , wherein the grayscale conversion part comprises:a white point adjuster configured to generate white point conversion data converting a white point at a predetermined time interval based on input image data; anda gamma mixer configured to generate gamma mix data mixing a gamma based on the input image data, the white point conversion data and gamma data input from outside.3. The display apparatus of claim 2 , wherein the white point adjuster comprises:a color temperature selector configured to generate coordinate data concerning a white point being adjusted: anda calculator configured to calculate white point adjusting data by using the coordinate data and the input image data.4. The display apparatus of claim 3 , wherein the gamma mixer comprises:a selector configured to generate selecting data based on the input image data and white point adjusting data; anda temporal gamma part configured to generate gamma mix data mixing a gamma based on the selecting data and gamma data input from outside.5. The display apparatus of claim 4 , further comprising:a timer configured to generate an enable signal making the selector select a signal comprising an adjusted white point at a ...

DISPLAY APPARATUS AND METHOD OF OPERATING THE SAME

A display apparatus includes a display panel and a panel driver. The display panel includes a first pixel including a first organic light emitting diode (OLED). The panel driver applies a first voltage to an anode electrode of the first OLED while a first frame image is displayed on the display panel if a grayscale of the first frame image is lower than a first reference grayscale. 1. A display apparatus comprising:a display panel comprising a first pixel including a first organic light emitting diode (OLED); anda panel driver configured to apply a first voltage to an anode electrode of the first OLED while a first frame image is displayed on the display panel if a grayscale of the first frame image is lower than a first reference grayscale.2. The display apparatus of claim 1 , wherein the first voltage is an initialization voltage for resetting the first OLED.3. The display apparatus of claim 2 , wherein the first pixel further comprises:a first transistor connected between the anode electrode of the first OLED and a node receiving the initialization voltage, the first transistor having a gate electrode receiving a first initialization control signal.4. The display apparatus of claim 3 , wherein the panel driver comprises:a data driver configured to generate a first data signal based on image data corresponding to the first frame image; andan initialization controller configured to generate the first initialization control signal by checking the grayscale of the first frame image based on the first data signal.5. The display apparatus of claim 4 , wherein the initialization controller comprises:a comparator including a first input terminal receiving the first data signal, a second input terminal receiving a first reference signal corresponding to the first reference grayscale, and an output terminal outputting the first initialization control signal.6. The display apparatus of claim 5 , wherein when a voltage level of the first data signal is higher than a voltage ...

ELECTRONIC DEVICE AND METHOD

According to one embodiment, electronic includes a determination module, and a controller. The controller configured to execute, for the image signal determined by the determination module as including the specific component, at least one of generating a second image signal which provides a display size greater than or equal to that defined by the image signal after reducing a horizontal display pixel number and a vertical display pixel number included in the image signal while maintaining a ratio of the horizontal display pixel number to the vertical display pixel number, and changing at least one of output timings of a horizontal output timing and a vertical output timing of the image signal. 1. An electronic device comprising:a determination controller configured to determine whether an image signal, which should be output to an output end, has luminance exceeding a predetermined level, and includes a specific component which is existent over a predetermined period; anda controller configured to execute, for the image signal determined by the determination controller as including the specific component, at least one of generating a second image signal which provides a display size greater than or equal to that defined by the image signal after reducing a horizontal display pixel number and a vertical display pixel number included in the image signal while maintaining a ratio of the horizontal display pixel number to the vertical display pixel number, and changing at least one of output timings of a horizontal output timing and a vertical output timing of the image signal.2. The electronic device of claim 1 , wherein the controller changes at least one of output timings of the horizontal output timing and the vertical output timing of the image signal of the second image signal.3. The electronic device of claim 1 , wherein the controller generates the second image signal with respect to the image signal determined by the determination controller as including the ...

Method and Apparatus of Grayscale Image Generation in Monochrome Display

A method is provided that allows the use of monochrome PMOLED display driver to generate grayscale patterns without the need to change the resolution of the 1-bit digital-to-analog converter (DAC) on the data line (SEG). The method further allows the elimination of extra frame buffer display memory needed by conventional techniques. This is achieved by swapping display memory space for display image pixel color (grayscale) depth in the expense of display resolution. The method further allows grayscale pattern data to be written into frame buffer only once without additional control from the host controller. The method further allows the dynamic application of grayscale on selectable whole or portion of a scan line such that full grayscale image display or a mixture of monochrome and grayscale image display in a single display panel is possible. 1. A method of grayscale image display signal driving in a monochrome display panel , comprising:activating each scan line in T number of timeslots within each frame, wherein only one scan line is activated at any one timeslot;driving each data line by one of ON or OFF driving signal waveform cycle during each timeslot within each frame, wherein all ON driving signal waveform cycles have identical signal waveform duty ratio and current amplitude;wherein brightness of a pixel is determined by total number of timeslots having ON driving signal waveform cycles driven on a data line connected to the pixel; andwherein the grayscale image pixel gray level information is stored in a display memory space shared by image display data.2. The method of claim 1 , wherein the display memory space is fixed for an original display resolution of the monochrome display panel such the display resolution is decreased to accommodate the grayscale image pixel gray level information being stored in a portion of the display memory space reserved for the grayscale image pixel gray level information.3. The method of claim 2 , wherein the portion of ...

DISPLAY DEVICE AND PIXEL CIRCUIT THEREOF

A display device and a pixel circuit thereof. The pixel circuit generates threshold voltage information of a driving transistor () in a source following manner, a threshold voltage of the driving transistor () and a reference voltage related to gray scale information are generated at two ends of a first capacitor () by means of voltage division of the first capacitor () and a second capacitor (), and the reference voltage keeps unchanged during a light-emitting process, so that a driving current flowing through a light-emitting device () is irrelevant to threshold voltages of the driving transistor () and the light-emitting device (), thereby compensating the threshold voltage deviation of the driving transistor () and the light-emitting device (), and solving the problem of nonuniform display. When the display device emits light line by line, the display device reduces the line programming time of the circuit by overlapping scanning signals and control signals, so that the demands for high-resolution and high-frame-frequency display panels are met while high precision is obtained. When the display device emits light in a concentrated manner, the pixel circuit reduces the complexity of the circuit and increases the light-emitting time by means of grouped programming and grouped light emission. 1. A pixel circuit , wherein a frame time of the pixel circuit comprises an initialization phase , a threshold extraction phase , a data writing phase , and a light emitting phase , and the pixel circuit comprising:a first transistor and a light emitting device, which are serially connected between a high voltage level and a low voltage level, and the first transistor is configured to provide a driving current for the light emitting device for the light emitting phase, and the light emitting device is configured to emit light according to the driving current, and the high voltage level is provided by a first voltage source, and the low voltage level is provided by a second ...

DRIVE METHOD AND DRIVE DEVICE OF LIQUID CRYSTAL DISPLAY

The present invention provides a drive method and a drive device of a liquid crystal display, and the drive method comprises: receiving an image to display; setting different weights for respective primary color components of the image pixels in the image to display; implementing the color washout compensation to the image to display according to the weight; driving the liquid crystal panel to show the image to display after the color washout compensation. With the aforesaid arrangement, the present invention can reduce the color washout under large view angle to promote the display effect of the large view angle. 1. A drive method of a liquid crystal display , wherein the drive method comprises:receiving an image to display;setting different weights for respective primary color components of the image pixels in the image to display, wherein the step of setting different weights for respective primary color components of the image pixels in the image to display comprises: implementing skin color detection to the image pixels of the image to display to determine nude pixel and non skin color pixel; setting different skin color weights for the nude pixel and the non skin color pixel, and setting different skin color weights for respective primary color components of the nude pixel;implementing the color washout compensation to the image to display according to the weight, wherein the step of implementing color washout compensation to the image to display according to the weight comprises:implementing the color washout compensation to the image to display according to the skin color weight;driving the liquid crystal panel to show the image to display after the color washout compensation;before the step of implementing color washout compensation to the image to display according to the skin color weight, the method further comprises:implementing adjustment to the original gray scale values of the respective primary color components of the nude pixel to make that a ...

DRIVE METHOD AND DRIVE DEVICE OF LIQUID CRYSTAL DISPLAY

The present invention provides a drive method and a drive device of a liquid crystal display, and the drive method comprises: receiving an image to display; implementing high frequency detection to the image pixels of the image to display to determine color differences of the respective image pixels and the adjacent image pixels; implementing the color washout compensation to the image to display according to the high frequency weight; driving the liquid crystal panel to show the image to display after the color washout compensation. With the aforesaid arrangement, the present invention can reduce the color washout under large view angle to promote the display effect of the large view angle. 1. A drive method of a liquid crystal display , wherein the drive method comprises:receiving an image to display;implementing high frequency detection to the image pixels of the image to display to determine color differences of the respective image pixels and the adjacent image pixels, wherein the step of implementing high frequency detection to the image pixels of the image to display comprises: calculating absolute differences of the original gray scale values of the respective primary color components of the respective image pixels and the adjacent image pixels, and summing the absolute differences to acquire different gray scale sum values for different adjacent image pixels; selecting the maximum gray scale sum value in the gray scale sum values to represent the color difference.respectively setting high frequency weights for the respective image pixels according to the color differences;implementing the color washout compensation to the image to display according to the high frequency weight, wherein the step of implementing color washout compensation to the image to display according to the high frequency weight comprises: employing the original gray scale values of the respective primary color components of the respective image pixels of the image to display to ...

DRIVE METHOD AND DRIVE DEVICE OF LIQUID CRYSTAL DISPLAY

The present invention provides a drive method and a drive device of a liquid crystal display, and the drive method comprises: receiving an image to display; implementing block detection to the image pixels of the image to display to determine dimensions of color blocks where the image pixels are; respectively setting block weights for the respective image pixels according to the dimensions of the color blocks; implementing the color washout compensation to the image to display according to the block weight; driving the liquid crystal panel to show the image to display after the color washout compensation. With the aforesaid arrangement, the present invention can reduce the color washout under large view angle to promote the display effect of the large view angle. 1. A drive method of a liquid crystal display , wherein the drive method comprises:receiving an image to display;implementing block detection to the image pixels of the image to display to determine dimensions of color blocks where the image pixels are;respectively setting block weights for the respective image pixels according to the dimensions of the color blocks;implementing the color washout compensation to the image to display according to the block weight; the step of implementing color washout compensation to the image to display according to the block weight comprises: employing the original gray scale values of the respective primary color components of the respective image pixels of the image to display to respectively generate the first display gray scale value and the second display gray scale value, wherein the first display gray scale value and the second display gray scale value are employed to respectively control display brightnesses of two display pixels of the same color on the liquid crystal panel, and the first display gray scale value is larger than the second display gray scale value, wherein the block weights are employed to set the ratio of the first display gray scale value and the ...

DISPLAY APPARATUS AND METHOD OF PROCESSING AN IMAGE SIGNAL INPUT TO A DISPLAY PANEL

An example of display apparatus includes: a display panel in which unit pixels each constituted by at least a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction; and a signal processing unit modulating, for image data including the first pattern and image data including the second pattern, a difference in maximum gradation values in the image data, and controlling synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel. 1. A display apparatus , comprising:a display panel in which unit pixels each constituted by at least a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction; anda signal processing unit modulating, for image data including the first pattern and image data including the second pattern, a difference in maximum gradation values in the image data, and controlling synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel.2. The display apparatus according to claim 1 , wherein the signal processing unit includes:a determination part detecting a gradation difference between a first image signal input to a subpixel and a second image signal input to a subpixel adjacent to said subpixel, and determining whether or not the gradation difference is equal to or larger than a preset threshold;a timing control part generating two or more data coupling clock signals having a same cycle, phase and pulse width, outputting the two or more data coupling clock signals as they are if determined that the gradation difference is smaller than the threshold, and controlling at least one of the cycle, phase or pulse width so that a rise or fall is not synchronized between the two or more data coupling clock signals to output the two or more data ...

EMISSION CONTROL APPARATUSES AND METHODS FOR A DISPLAY PANEL

Methods and apparatuses relating to controlling an emission of a display panel. In one embodiment, a display driver hardware circuit includes row selection logic to select a number of rows in an emission group of a display panel, wherein the number of rows is adjustable from a single row to a full panel of the display panel, column selection logic to select a number of columns in the emission group of the display panel, wherein the number of columns is adjustable from a single column to the full panel of the display panel, and emission logic to select a number of pulses per data frame to be displayed, wherein the number of pulses per data frame is adjustable from one to a plurality and a pulse length is adjustable from a continuous duty cycle to a non-continuous duty cycle. 1. (canceled)2. A display system comprising:a display panel including an active area;an array of microdriver chips mounted in the active area;an array of micro light emitting diodes (LEDs) mounted in the active area, wherein each microdriver chip is connected to a group of micro LEDs; a digital memory cell to modulate pulse width of an emission pulse to be sent to a corresponding micro LED; and', 'an analog current source including storage capacitor to control current level of the emission pulse., 'wherein each microdriver chip includes a hybrid unit cell including3. The display system of claim 2 , wherein the digital memory cell includes a counter claim 2 , a register claim 2 , and a comparator.4. The display system of claim 3 , wherein the register includes a pulse width modulation (PWM) data input.5. The display system of claim 4 , wherein the counter includes a reset input to reset the counter to zero.6. The display system of claim 4 , wherein the hybrid unit cell includes a comparator for each micro LED of the group of micro LEDs.7. The display system of claim 4 , wherein the comparator includes an input to receive a number of pulses from the counter and an input to receive PWM data from the ...

DISPLAY APPARATUS AND METHOD OF DRIVING DISPLAY PANEL USING THE SAME

A display apparatus includes a display panel, a gate driver, a data driver and an emission driver. The display panel is configured to display an image. The gate driver is configured to output a gate signal having different applying timings for frames according to a difference between a grayscale value of a present frame image and a grayscale value of a previous frame image to the display panel. The data driver is configured to output a data voltage to the display panel. The emission driver is configured to output an emission signal to the display panel. 1. A display apparatus comprising:a display panel configured to display an image;a gate driver configured to output a gate signal having different applying timings for frames according to a difference between a grayscale value of a present frame image and a grayscale value of a previous frame image to the display panel;a data driver configured to output a data voltage to the display panel; andan emission driver configured to output an emission signal to the display panel.2. The display apparatus of claim 1 , wherein as the difference between the grayscale value of the present frame image and the grayscale value of the previous frame image is greater claim 1 , the applying timing of the gate signal is in a later region of an inactive period of the emission signal.3. The display apparatus of claim 1 , wherein when the grayscale value of the present frame image is equal to or less than the grayscale value of the previous frame image claim 1 , the gate driver is configured to output the gate signal having the same applying timing for frames regardless of the difference between the grayscale value of the present frame image and the grayscale value of the previous frame image claim 1 , andwherein when the grayscale value of the present frame image is greater than the grayscale value of the previous frame image, the gate driver is configured to output the gate signal in different applying timings for frames according to the ...

ESTIMATION OF PIXEL COMPENSATION COEFFICIENTS BY ADAPTATION

A system and method for estimating and using pixel compensation coefficients. In some embodiments, the method includes, during a first time interval: comparing a first pixel current for a pixel of the display with a first reference current, to obtain a first pixel current error signal, the first pixel current error signal being the sign of a difference between the first pixel current and the first reference current; and updating one or more compensation coefficients for the pixel, based on the first pixel current error signal. 1. A method for compensating for characteristics of a display , the method comprising: comparing a first pixel current for a pixel of the display with a first reference current, to obtain a first pixel current error signal, the first pixel current error signal being the sign of a difference between the first pixel current and the first reference current; and', 'updating one or more compensation coefficients for the pixel, based on the first pixel current error signal; and, 'during a first time interval comparing a second pixel current for the pixel with a second reference current, to obtain a second pixel current error signal, the second pixel current error signal being the sign of a difference between the second pixel current and the second reference current; and', 'updating the one or more compensation coefficients for the pixel, based on the second pixel current error signal., 'during a second time interval2. The method of claim 1 , further comprising:during the first time interval, applying a first control voltage to the pixel, the first control voltage being based on a first received code word; andduring the second time interval, applying a second control voltage to the pixel, the second control voltage being based on a second received code word.3. The method of claim 2 , further comprising:during the first time interval, generating the first reference current based on the first received code word; andduring the second time interval, ...

DATA INPUT UNIT, DATA INPUT METHOD, SOURCE DRIVE CIRCUIT AND DISPLAY DEVICE

A data input unit, a data input method, a source drive circuit and a display device. The data input unit includes: an input module, configured to provide a normal display data; a setting module, configured to preset one or more predetermined display data; and a selection module, configured to select the input module to provide the normal display data to a data input end or select the setting module to provide a special predetermined display data to the data input end, according to the one or more external control signals. Thus, besides a normal driving function, other special driving functions also may be provided for special display demands so as to improve the performance and display quality of a display device. 1. A data input unit , comprising:an input module, configured to provide a normal display data;a setting module, configured to preset one or more predetermined display data; anda selection module, configured to select the input module to provide the normal display data to a data input end or select the setting module to provide a special predetermined display data to the data input end, according to one or more external control signals.2. The data input unit according to claim 1 , wherein claim 1 ,in a case that an effective external control signal is in the one or more external control signals, the selection module controls the setting module to provide a predetermined display data corresponding to the effective external control signal to the data input end; andin a case that the one or more external control signals are ineffective, the selection module controls the input module to provide the normal display data to the data input end.3. The data input unit according to claim 1 , wherein claim 1 ,the external control signal comprises a shutdown control signal, and the setting module is configured to preset a first predetermined display data, the grayscale value of which is 0;in a case that the shutdown control signal is effective, the selection module ...

OPERATION METHOD OF DISPLAY DEVICE

To provide a display device with high display quality, an eye-friendly display device, a display device with low power consumption, a display device with a reduced change in voltage written to a pixel, or a novel display device. In the display device, a first image signal in which one of grayscale levels of a first pixel and an adjacent second pixel is near white and the other is near black is written. The first image signal is compared with a second image signal. When the grayscale levels of the second image signal written to the first pixel and the second pixel are halftone, the second image signal is written an odd number of times greater than or equal to three times. When the grayscale levels of the second image signal written to the first pixel and the second pixel are near white or near black, the second image signal is written once. The interval between the writing of the first image signal and the writing of the second image signal is longer than or equal to 1 second and shorter than or equal to 10,000 hours. 1. An operation method of a display device including a comparison circuit and a first display portion including a first pixel and a second pixel adjacent to the first pixel , wherein grayscale levels of an image displayed on the first display portion are Cx at maximum , comprising:writing a first image signal to the first display portion;comparing the first image signal and a second image signal before the second image signal is written; andwriting the second image signal,wherein a grayscale level of the first image signal written to one of the first pixel and the second pixel is higher than or equal to 0.8Cx and a grayscale level of the first image signal written to the other of the first pixel and the second pixel is lower than or equal to 0.2Cx,wherein the writing of the second image signal is performed once when the grayscale levels of the second image signal written to the first pixel and the second pixel are each 0.8Cx or higher, or 0.2Cx or lower ...

DRIVE METHOD AND DRIVE DEVICE OF LIQUID CRYSTAL DISPLAY

The present invention provides a drive method and a drive device of a liquid crystal display, and the drive method comprises: receiving an image to display; implementing skin color detection to the image pixels of the image to display to determine nude pixel and non skin color pixel; setting different skin color weights for the nude pixel and the non skin color pixel; implementing the color washout compensation to the image to display according to the skin color weight; driving the liquid crystal panel to show the image to display after the color washout compensation. With the aforesaid arrangement, the present invention preferably improves the resolution and viewing angle of the display at the same time. 1. A drive method of a liquid crystal display , wherein the drive method comprises:receiving an image to display;implementing skin color detection to the image pixels of the image to display to determine nude pixel and non skin color pixel, wherein the step of implementing skin color detection to the image pixels of the image to display comprises: acquiring original gray scale values of red, green, blue, three primary colors of the respective image pixels; the image pixels satisfying the following equation are defined to be nude pixels, and the image pixels not satisfying the following equation are defined to be non skin color pixels: LR>LG>LB, wherein LR, LG, LB respectively are the original gray scale values of the red, green, blue, three primary colors;setting different skin color weights for the nude pixel and the non skin color pixel;implementing the color washout compensation to the image to display according to the skin color weight;driving the liquid crystal panel to show the image to display after the color washout compensation;wherein before the step of implementing color washout compensation to the image to display according to the skin color weight, the method further comprises:implementing adjustment to the original gray scale values of the respective ...

GATE DRIVER, A DISPLAY APPARATUS HAVING THE GATE DRIVER AND A METHOD OF DRIVING THE DISPLAY APPARATUS

A gate driver includes a first shift-register including a plurality of odd-numbered stages which outputs a plurality of odd-numbered original gate signals having a pre-charge pulse and a main-charge pulse in synchronization with a first gate clock signal, a second shift-register comprising a plurality of even-numbered stages which outputs a plurality of even-numbered original gate signals having a pre-charge pulse and a main-charge pulse in synchronization with a second gate clock signal, a first inverter configured to output a first inversion pre-charge control signal having a phase opposite to a phase of a first pre-charge control signal, and a second inverter configured to output a second inversion pre-charge control signal having a phase opposite to a phase of a second pre-charge control signal. 1. A gate driver , comprising:a first shift-register comprising a plurality of odd-numbered stages, wherein the first shift-register outputs a plurality of odd-numbered original gate signals in synchronization with a first gate clock signal, wherein each of the odd-numbered original gate signals has a pre-charge pulse and a main-charge pulse;a second shift-register comprising a plurality of even-numbered stages, wherein the second shift-register outputs a plurality of even-numbered original gate signals in synchronization with a second gate clock signal, wherein each of the even-numbered original gate signals has a pre-charge pulse and a main-charge pulse;a first inverter configured to output a first inversion pre-charge control signal having a phase opposite to a phase of a first pre-charge control signal;a second inverter configured to output a second inversion pre-charge control signal having a phase opposite to a phase of a second pre-charge control signal;a first AND-circuit configured to perform an AND operation on a first odd-numbered original gate signal of the odd-numbered original gate signals and the first inversion pre-charge control signal;a second AND- ...

DISPLAY DEVICE

A driving circuit of a display device includes first to third output signal lines which are continuously arranged, a first transistor that has a source connected to the second output signal line and a drain connected to a first clock signal line, and a second transistor that provides a non-active potential to a gate of the first transistor when a second clock signal becomes the active potential, wherein a circuit that outputs the active potential to the first output signal line and the third output signal line is disposed at an opposite side to a circuit that outputs the active potential to the second output signal line with a display region interposed therebetween, and wherein the gate of the first transistor is connected to the first output signal line and the third output signal line via rectifying circuits. 1. A display device comprising:a plurality of pixels including a pixel transistor respectively,a plurality of scanning signal lines supplying a scanning signal to the plurality of pixels respectively,a driving circuit sequentially applying the scanning signal to the plurality of scanning lines, andfour clock signal lines including a first clock signal line, a second clock signal line, a third clock signal line and a fourth clock signal line,wherein the scanning signal has an active potential which is able to turn on a pixel transistor and the non-active potential which is able to turn off the pixel transistor,wherein the plurality of scanning signal lines are arranged in order of a first scanning signal line, a second scanning signal line and a third scanning signal line,wherein the driving circuit comprises a first output circuit configured to output the active potential to the first scanning signal line,wherein four clock signal lines become the active potential in order of the first clock signal line, the second clock signal line, the third clock signal line and the fourth clock signal line,wherein a period of the active potential of four clock signal ...

BACKLIGHT DEVICE AND DISPLAY DEVICE PROVIDED WITH SAME

An LED data holding unit that holds turn-on control data for controlling the luminance of each LED included in a backlight device is provided in an LED drive circuit. The LED data holding unit is implemented by, for example, registers. When the LED drive circuit drives the LEDs, the LED drive circuit switches a read destination of the turn-on control data from the LED data holding unit based on a turn-on switching signal. Turn-on control data for each LED is read from the LED data holding unit a ty of times during each frame period. 1. A backlight device including LEDs as light sources , the backlight device comprising:a plurality of LED units divided into a plurality of groups, each of the plurality of LED units including one or more LEDs; andan LED drive circuit configured to time-divisionally drive the LEDs included in the plurality of LED units on a group-by-group basis, wherein includes a turn-on control data holding unit configured to hold turn-on control data, the turn-on control data being data transmitted from an external source to control luminances of the one or more LEDs included in each of the plurality of LED units; and', 'drives a drive-target LED based on turn-on control data read from the turn-on control data holding unit based on a predetermined turn-on switching signal,, 'the LED drive circuitthe one or more LEDs included in each of the plurality of LED units are driven N times (N is an integer greater than or equal to two) during one frame period, andturn-on control data corresponding to the one or more LEDs included in each of the plurality of LED units is read by the LED drive circuit N times during one frame period from the turn-on control data holding unit.2. The backlight device according to claim 1 , wherein when a length of one frame period is FT and a number of the groups is GN claim 1 , turn-on control data read from the turn-on control data holding unit based on the turn-on switching signal is switched every time T calculated by a ...

Display device

A display device includes a plurality of pixels. One of the pixels includes a light emitting diode and a driving circuit coupled to the light emitting diode. A display frame period includes at least two emission periods. The light emitting diode emits light according to a data signal including a gray level in each of the at least two emission periods.

METHOD OF DISPLAYING FRAME RATE

A method of displaying frame rate includes the following steps. First, a quantity of image display units of a display is detected. Then, a plurality of refresh rate images are provided according to the quantity of image display units and by using an on-screen display manipulation function. A refresh rate of the display is calculated, to provide refresh rate data. One of the refresh rate images corresponding to the refresh rate data is determined, and is displayed on the display. 1. A method of displaying frame rate , comprising:detecting a quantity of image display units of a display;providing a plurality of refresh rate images according to the quantity of image display units and by using an on-screen display (OSD) manipulation function;calculating a refresh rate of the display, to provide refresh rate data; anddetermining one of the refresh rate images corresponding to the refresh rate data, and displaying the refresh rate image on the display.2. The method of displaying frame rate according to claim 1 , further comprising:recording the refresh rate data as displayed refresh rate data.3. The method of displaying frame rate according to claim 2 , further comprising:re-reading the refresh rate data of the display by using a Display Data Channel Command Interface.4. The method of displaying frame rate according to claim 2 , further comprising:displaying the refresh rate images of the refresh rate data and of the displayed refresh rate data on the display.5. The method of displaying frame rate according to claim 2 , wherein a chart of the displayed refresh rate data comprises a refresh rate data chart of the display at a current predetermined time.6. The method of displaying frame rate according to claim 1 , wherein the refresh rate image further comprises a refresh rate data chart.7. The method of displaying frame rate according to claim 1 , wherein the refresh rate image further comprises a displayed refresh rate data chart.8. The method of displaying frame rate ...

Display device, apparatus for signal control device of the same, and signal control method

A display device includes a plurality of pixels, a scan driver sequentially applying a scan signal to a plurality of scan lines, a data driver applying a data signal corresponding to the scan signal to a plurality of data lines, and a signal controller calculating an image parameter from an image signal, and generating and transmitting one of a driving control signal for short period light emitting and a driving control signal for long period light emitting to the scan driver and the data driver by using the image parameter. The driving control signal for short period light emitting is a signal controlling a light emitting period in which a plurality of pixels emit light during one frame with a first period. The driving control signal for long period light emitting is a signal controlling the light emitting period with a second period that is longer than the first period.

DISPLAY SYNCHRONIZATION

Techniques for synchronizing a display transmitter and display panel are described. An example display panel includes a timing controller to receive display data from a transmitter and render the display data on a display screen of the display panel. The display panel is in a first clock domain and the transmitter is in a second clock domain which is derived separately from the first clock domain. The display panel also includes a time code generator to generate a first display time code and a frequency adjuster to receive a second display time code from the transmitter. The frequency adjuster adjusts the clock frequency of the display panel based on the first display time code and the second display time code. 1. A display panel comprising:a timing controller to receive display data from a transmitter and render the display data on a display screen of the display panel, wherein the display panel is in a first clock domain and the transmitter is in a second clock domain which is derived separately from the first clock domain;a time code generator to generate a first display time code; anda frequency adjuster to receive a second display time code from the transmitter and adjust a clock frequency of the display panel based on the first display time code and the second display time code.2. The display panel of claim 1 , wherein the display panel is to communicatively couple to the transmitter through a shared link.3. The display panel of claim 1 , comprising a transport device to be communicatively coupled to a transport host of the transmitter claim 1 , the transport device to receive the display data from transport host and deliver the display data to the timing controller.4. The display panel of claim 3 , wherein the transport device is to generate a strobe signal claim 3 , and the frequency adjuster is to periodically adjust the clock frequency of the display panel in synchronization with the strobe signal.5. The display panel of claim 4 , wherein the transport ...

Apparatus and method for controlling liquid crystal display brightness, and liquid crystal display device

The disclosure provides an apparatus for controlling liquid crystal display brightness, the apparatus pre-obtaining a zone backlight value corresponding to a zone image data block according to grayscale values; if the zone backlight value is above a first threshold, multiplying the pre-obtained zone backlight value with a backlight value gain coefficient, which is more than 1, to a obtain backlight value to which a gain is applied, of a backlight zone corresponding to the zone image data block, outputting the backlight value to which the gain is applied, to a driver circuit of backlight source in the backlight zone to control brightness of the backlight source in the backlight zone as a result of driving; if the zone backlight value is below a second threshold, compensating for the grayscale values of the pixels in the zone image data block using compensation coefficients, each of which is more than 1.

APPARATUS AND METHOD FOR CONTROLLING LIQUID CRYSTAL DISPLAY BRIGHTNESS, AND LIQUID CRYSTAL DISPLAY DEVICE

An apparatus for controlling liquid crystal display brightness includes: a zone image grayscale determining section configured to determine grayscale values of pixels in a zone image data block under a predetermined rule according to a received image signal; a zone backlight value pre-obtaining section configured to pre-obtain a zone backlight value corresponding to the zone image data block according to the grayscale values; a zone backlight value gain section configured, when it is determined that the zone backlight value is above a first threshold, to multiply the zone backlight value with a backlight value gain coefficient to obtain a backlight value to which a gain is applied, corresponding to the zone image data block, and to output the backlight value to which the gain is applied, to a driver circuit of backlight source in a backlight zone corresponding to the zone image data block, to control brightness of the backlight source in the corresponding backlight zone as a result of driving, where the backlight value gain coefficient is more than 1; and a zone image grayscale compensating section configured, when it is determined that the zone backlight value is below a second threshold, to compensate for the grayscale values of pixels in the zone image data block using compensation coefficients respectively to obtain compensated image data for driving the liquid crystal panel, wherein the compensation coefficient is more than 1. 1. An apparatus for controlling liquid crystal display brightness , the apparatus comprising:a zone image grayscale determining section configured to determine grayscale values of pixels in a zone image data block under a predetermined rule according to a received image signal;a zone backlight value pre-obtaining section configured to pre-obtain a zone backlight value corresponding to the zone image data block according to the grayscale values;a zone backlight value gain section configured, when it is determined that the zone backlight ...

Method for driving display including curved display area, display driving circuit supporting the same, and electronic device including the same

An electronic device is provided, The electronic device may include a display, a processor operatively connected to the display and configured to generate display data to be output on the display, a display driver integrated circuit configured to output, on the display, the display data received from the processor, wherein the display driver integrated circuit is configured to apply a color transformation value of the same or different magnitude to display data based on a distance from a specified point of the display to a location where the display data are to be displayed.

ELECTRO-OPTICAL DEVICE, AND ELECTRONIC APPARATUS

A display device includes a liquid crystal element in which a transmissivity is controlled according to a data signal, and which extends in a first direction, a data line, a data line driving circuit that supplies a data signal to the liquid crystal element via the data line, and a light source that irradiates the liquid crystal element with the light, in which the light source moves the irradiation position of the light in the liquid crystal element in a first direction in a part of or the entire display period, and the data line driving circuit supplies the data signal in which the transmissivity of the liquid crystal element becomes a transmissivity that corresponds to the gradation to be displayed at the irradiation position of the light with which the liquid crystal element is irradiated to the liquid crystal element. 1. An electro-optical device comprising:K (K is an integer of 1 or more and three or less) electro-optical elements extending in a first direction;K data lines connected to the K electro-optical elements;a supply portion that supplies gradation signals to the K electro-optical elements via the K data lines; anda light source that irradiates the K electro-optical elements with L (L is an integer of 1 or more and 3 or less) lights,wherein the light source moves irradiation positions of the L lights in the first direction, andthe supply portion supplies gradation signals corresponding to the gradation to be displayed at the irradiation positions of the L lights in the K electro-optical elements to the K electro-optical elements when the K electro-optical elements are irradiated by the light source.2. The electro-optical device according to claim 1 ,wherein, in a case where K is 1, andL is 3, the light source irradiates a first electro-optical element with a first light, and moves an irradiation position of the first light in the first direction in a first period,irradiates the first electro-optical element with a second light different from the first ...

DISPLAY DEVICE

A driving circuit of a display device includes first to third output signal lines which are continuously arranged, a first transistor that has a source connected to the second output signal line and a drain connected to a first clock signal line, and a second transistor that provides a non-active potential to a gate of the first transistor when a second clock signal becomes the active potential, wherein a circuit that outputs the active potential to the first output signal line and the third output signal line is disposed at an opposite side to a circuit that outputs the active potential to the second output signal line with a display region interposed therebetween, and wherein the gate of the first transistor is connected to the first output signal line and the third output signal line via rectifying circuits. 1. A display device comprising:a plurality of pixels including a pixel transistor respectively,a plurality of scanning signal lines supplying a scanning signal to the plurality of pixels respectively,a driving circuit sequentially applying the scanning signal to the plurality of scanning lines, andfour clock signal lines including a first clock signal line, a second clock signal line, a third clock signal line and a fourth clock signal line,wherein the scanning signal has an active potential which is able to turn on a pixel transistor, and the non-active potential which is able to turn off the pixel transistor,wherein the plurality of scanning signal lines are arranged in order of a first scanning signal line, a second scanning signal line and a third scanning signal line,wherein the driving circuit comprises a first output circuit configured to output the active potential to the first scanning signal line,wherein four clock signal lines become the active potential in order of the first clock signal line, the second clock signal line, the third clock signal line and the fourth clock signal line,wherein the first output circuit comprises a first transistor, ...

LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING THE SAME

A liquid crystal display includes a liquid crystal panel including 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 a plurality of pixels connected to the gate lines and the data lines, a gate driver configured to apply gate signals to the gate lines, a data driver configured to apply data voltages to the data lines, and a timing controller configured to receive a control signal and image data, to apply a gate control signal to the gate driver, and to apply a data control signal to the data driver, wherein the timing controller is further configured to determine whether to change a present polarity arrangement on a basis of a color ratio of the image data. 1. A liquid crystal display comprising:a liquid crystal panel 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 a plurality of pixels connected to the gate lines and the data lines;a gate driver configured to apply gate signals to the gate lines;a data driver configured to apply data voltages to the data lines; anda timing controller configured to receive a control signal and image data, to apply a gate control signal to the gate driver, and to apply a data control signal to the data driver, wherein the timing controller is further configured to determine whether to change a present polarity arrangement on a basis of a color ratio of the image data.2. The liquid crystal display of claim 1 , wherein the timing controller comprises:a present polarity arrangement decider configured to determine whether the present polarity arrangement is any one of a first polarity arrangement, a second polarity arrangement, a third polarity arrangement, and a fourth polarity arrangement;a first polarity modulation determination circuit configured to analyze the color ratio of the image data when the present polarity ...

DRIVE METHOD AND DRIVE DEVICE OF LIQUID CRYSTAL DISPLAY

A drive method is provided for driving a liquid crystal display and includes receiving an image to be displayed, which includes multiple image pixels; setting different weights for primary color components of each of multiple image pixels of the image; implementing color washout compensation to the image according to the weights set for the primary color components of each of the multiple image pixels by varying brightness levels of the primary color components of each of the image pixels of the image; and driving the liquid crystal display to display the image so compensated. 1. A driving method of a liquid crystal display , comprising the following steps:Step 1: receiving an image to be displayed on a liquid crystal display that comprises multiple display pixels, wherein the image comprises image pixels respectively comprising primary color components;Step 2: setting different weights for the primary color components of the image pixels of the image,wherein the different weights set for the primary color components of the image pixels of the image are selected as skin color weights that are determined by implementing a skin color detection process to the image pixels of the image to determine a nude pixel and a non skin color pixel among the image pixels; and setting different weight values for the nude pixel and the non skin color pixel of the image pixels to serve as the skin color weights, such that the skin color weights set for the primary color components of the nude pixel are different; andStep 3: implementing the color washout compensation to the image pixels of the image according to the weights set for the primary color components of the image pixels,wherein an original gray scale value of each of the primary color components of each of the image pixels of the image is employed to generate a first display gray scale value and a second display gray scale value that are respectively applied to control display brightness levels of two display pixels of the ...

Drive method and drive device of liquid crystal display

A drive method is provided for driving a liquid crystal display and includes receiving an image to be displayed, which includes multiple image pixels; setting different weights for primary color components of each of multiple image pixels of the image; implementing color washout compensation to the image according to the weights set for the primary color components of each of the multiple image pixels by varying brightness levels of the primary color components of each of the image pixels of the image; and driving the liquid crystal display to display the image so compensated.

DRIVE METHOD AND DRIVE DEVICE OF LIQUID CRYSTAL DISPLAY

A drive method is provided for driving a liquid crystal display and includes receiving an image to be displayed, which includes multiple image pixels; setting different weights for primary color components of each of multiple image pixels of the image; implementing color washout compensation to the image according to the weights set for the primary color components of each of the multiple image pixels by varying brightness levels of the primary color components of each of the image pixels of the image; and driving the liquid crystal display to display the image so compensated. 1. A drive method of a liquid crystal display , comprising the following steps:a step of receiving an image to be displayed on a liquid crystal display that comprises multiple display pixels, wherein the image comprises image pixels respectively comprising primary color components;a step of setting different weights for the primary color components of the image pixels of the image;a step of implementing color washout compensation to the image pixels of the image according to the weights set for the primary color components of the image pixels; anda step of driving the liquid crystal display to display the primary color components of the image pixels of the image after the color washout compensation;wherein the step of setting different weights for the primary color components of the image pixels of the image comprises: implementing skin color detection to the image pixels of the image to determine a nude pixel and a non skin color pixel among the image pixels; and setting different skin color weights for the nude pixel and the non skin color pixel of the image pixels, wherein the skin color weights set for the primary color components of the nude pixel are different, such that the step of implementing color washout compensation to the image pixels of the image according to the weights set for the primary color components of the image pixels is first carried out by implementing the color ...

DISPLAY DRIVER, ELECTRO-OPTIC APPARATUS, ELECTRONIC DEVICE, AND CONTROL METHOD FOR DISPLAY DRIVER

A display driver includes a drive circuit that receives input of a first reference voltage to an nth reference voltage (where n is an integer of two or more), and outputs a drive voltage that is based on a grayscale voltage obtained by voltage division of an ith reference voltage and an (i+1)th reference voltage (where i is an integer of n−1 or less), and a control circuit that utilizes frame rate control on first display data corresponding to a grayscale voltage obtained by voltage division of the first reference voltage and a second reference voltage to generate second display data, and supplies the second display data to the drive circuit. 1. A display driver comprising:a drive circuit that receives input of a first reference voltage to an nth reference voltage (where n is an integer of two or more), and outputs a drive voltage that is based on a grayscale voltage obtained by voltage division of an ith reference voltage and an (i+1)th reference voltage (where i is an integer of n−1 or less); anda control circuit that utilizes frame rate control on first display data corresponding to a grayscale voltage obtained by voltage division of the first reference voltage and a second reference voltage to generate second display data, and supplies the second display data to the drive circuit.2. The display driver according to claim 1 ,wherein the drive circuit outputs a drive voltage that is based on the second display data, in a case of outputting a drive voltage that is based on the grayscale voltage obtained by voltage division of the first reference voltage and the second reference voltage.3. The display driver according to claim 1 ,wherein the control circuit utilizes the frame rate control on first display data corresponding to a grayscale voltage obtained by voltage division of an (n−1)th reference voltage and the nth reference voltage to generate the second display data, and supplies the second display data to the drive circuit.4. The display driver according to ...

DISPLAY APPARATUS AND METHOD OF PROCESSING AN IMAGE SIGNAL INPUT TO A DISPLAY PANEL

An example of display apparatus includes: a display panel in which unit pixels each constituted by at least a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction; and a signal processing unit modulating, for image data including the first pattern and image data including the second pattern, a difference in maximum gradation values in the image data, and controlling synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel. 1. A display apparatus , comprising:a display panel in which unit pixels each constituted by a subpixel are alternately arranged in a row or column direction; anda signal processing unit modulating, for image data with a relationship of inverted gradation levels between the subpixel and an image signal input to a subpixel adjacent to said subpixel in an alignment direction of a data line, a difference in maximum gradation values in the image data, and controlling synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel.2. The display apparatus according to claim 1 , whereinthe signal processing unit includes:a determination part determining whether or not a first image signal input to a subpixel and a second image signal input to a subpixel adjacent to said subpixel in an alignment direction of the data line have a relationship of inverted gradation levels from each other;a timing control part generating two or more data coupling clock signals having a same cycle, phase and pulse width, outputting the two or more data coupling clock signals as they are if determined that the first and second image signals are not in the relationship of inverted gradation levels, and controlling at least one of the cycle, phase or pulse width so that a rise or fall is not synchronized between the two or more data coupling clock ...

ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE

An organic light emitting diode (OLED) display device includes an OLED display panel having gate lines, data lines intersecting the gate lines, and a plurality of pixels connected to the gate lines and the data lines. A timing controller receives an image signal of a plurality of frames and outputs image data based on the plurality of frames. A data driver generates a data signal voltage corresponding to the image data output from the timing controler. When the image signal includes a black image signal to one pixel of the plurality of pixels that continues for at least a predetermined plurality of frames, the timing controller outputs a first image data in which the black image signal has been converted to a first gray level value that is greater than a gray level value of the black image signal. 1. An organic light emitting diode (OLED) display device comprising:an organic light emitting diode display panel comprising a plurality of gate lines, a plurality of data lines intersecting the plurality of gate lines, and a plurality of pixels connected to the plurality of gate lines and the plurality of data lines;a timing controller receiving an image signal of a plurality of frames and outputting image data based on the plurality of frames; anda data driver generating a data signal voltage corresponding to the image data output from the timing controler,wherein When the image signal includes a black image signal to one pixel of the plurality of pixels that continues for at least a predetermined plurality of frames, the timing controller outputs a first image data in which the black image signal has been converted to a first gray level value that is greater than a gray level value of the black image signal.2. The organic light emitting diode display device as claimed in claim 1 , wherein the predetermined plurality of frames comprises at least ten successive frames.3. The organic light emitting diode display device as claimed in claim 1 , wherein when a minimum gray ...

APPARATUS AND METHOD FOR CONTROLLING LIQUID CRYSTAL DISPLAY BRIGHTNESS, AND LIQUID CRYSTAL DISPLAY DEVICE

The disclosure provides an apparatus and method for controlling liquid crystal display brightness, and a liquid crystal display device, where the method includes: determining grayscale values of pixels in a zone image data block under a predetermined rule according to a received image signal; pre-obtaining a zone backlight value corresponding to the zone image data block according to the grayscale values in the zone image data block; multiplying the pre-obtained a zone backlight value with a backlight value gain coefficient to obtain a backlight value to which a gain is applied of a backlight zone, wherein the backlight value gain coefficient is more than 1; and mapping the respective zone backlight values to driver circuits of backlight sources in the corresponding backlight zones. 1. An apparatus for controlling liquid crystal display brightness , the apparatus comprising a memory and one or more processors , wherein one or more computer readable program codes are stored in the memory , and the one or more processors are configured to execute the one or more computer readable program codes to perform:determining grayscale value of pixels in a zone image data block under a predetermined rule according to a received image signal;pre-obtaining a zone backlight value corresponding to the zone image data block according to the grayscale values in the zone image data block;multiplying the pre-obtained zone backlight value with a backlight value gain coefficient to obtain a backlight value, to which a gain is applied, of a backlight zone corresponding to the zone image data block, wherein the backlight value gain coefficient is more than 1; andoutputting the zone backlight value to a driver circuit of backlight source in the backlight zone to control brightness of the backlight source in the backlight zone as a result of driving.2. The apparatus of claim 1 , wherein the one or more processors are further configured to execute the one or more computer readable program ...

Led Display Device and Method For Driving The Same

An LED display device and a method for driving the same are disclosed. The LED display device includes a plurality of pixel units being coupled to the row and column lines. In each of the row periods, the method comprises: displaying a display data in a manner of packet-by-packet; and pre-charging the parasitic capacitors between the row and column line by use of a reset voltage to implement a reset between the successive groups. According to the disclosure, a reset is performed between the packets in each row period to reduce the interference to the low grayscale image by the high grayscale image, such that the dynamic display quality of the image is improved. 1. A method for driving an LED display device , said LED display device comprising pixel units being coupled to row and column lines , in each row period , said method comprising:displaying a display data in a manner of packet-by-packet; andpre-charging parasitic capacitors between row and column lines by use of a reset voltage so as to implement a reset between a plurality of successive packets.2. The method according to claim 1 , further comprising:dividing said display data into packets by weight, wherein said weight corresponds to a LED lighting duration time; andarranging said plurality of packets in ascending order of weight in each row period.3. The method according to claim 2 , wherein each packet in a first group of packets has a weight less than a weight of any packet in a second group of packets.4. The method according to claim 3 , wherein each packet in said second group of packets is further divided into a plurality of sub-cycles claim 3 , and a reset is performed between said plurality of sub-cycles.5. The method according to claim 3 , wherein a first display data is displayed in said first group of packets claim 3 , a second display data having a value larger than that of the first display data is displayed in said first group of packets and said second group of packets.6. The method according ...

DISPLAY DEVICE

A display device includes an image signal processor generating modulation data of each pixel region corresponding to a display period of each frame based on an image signal and predetermined modulation value tables which are preset to different gains. The image signal processor includes a block divider and at least two data modulators. The block divider divides the display region into at least two block regions along a second direction. The at least two data modulators correspond to the at least two block regions, modulate gray scale data of each of pixel regions included in each block region based on a modulation value table, and generate modulation data of the pixel regions included in each block region. As a result, a difference in the charge amount caused by line resistance can be compensated according to the overdriving scheme, resulting in prevention of image quality deterioration. 1. A display device , comprising:a display panel including a gate line of a first direction, a data line of a second direction perpendicular to the first direction, and a plurality of pixel regions corresponding to a plurality of pixels;a gate driver providing a gate signal to the gate line;a data driver providing a data signal to the data line;an image signal processor generating modulation data of each pixel region corresponding to a display period of each frame based on an image signal and predetermined modulation value tables; anda timing controller controlling driving of each of the gate driver and the data driver on the basis of modulation data of each pixel region, a frame data generator generating gray scale data of each pixel region corresponding to a display period of each frame based on the image signal;', 'a block divider dividing the display region into at least two block regions along the second direction, and sorting gray scale data of the plurality of pixel regions such that the gray scale data corresponding to each of the at least two block regions is deducted;', ' ...

Driver ic and electronic device

To achieve versatility, a driver IC has a function of generating an analog data signal from an image signal input from the outside; a function of outputting the analog data signal from an output pin; and a function of setting the analog data signal as a data signal for alternating-current driving or for direct-current driving, in accordance with data of a digital signal input from the outside. For example, the driver IC can output data signals for alternating-current driving from output pins in odd-numbered columns and data signals for direct-current driving from output pins in even-numbered columns. Furthermore, the driver IC can output data signals for alternating-current driving or for direct-current driving from all the output pins. The driver IC can drive a liquid crystal panel, a self-luminous panel, and a hybrid display panel where one subpixel includes a liquid crystal element and a light-emitting element.

DISPLAY DEVICE AND METHOD OF DRIVING THE SAME

Provided are a display device and method of driving the same. A display device includes: a display panel including: data lines and gate lines intersecting each other, and pixels in a matrix, a timing controller configured to reduce a refresh rate of the pixels in a low-speed driving mode compared to a refresh rate of the pixels in a normal driving mode, and a display panel driving circuit configured to: write data to the display panel, write data to the pixels during N driving frame periods within a unit of time, that is set to the refresh rate of the low-speed driving mode, under the control of the timing controller, where “N” is a positive integer of 2 to 4, wherein the pixels are configured to hold a voltage of previous data for a remaining time other than the N driving frame periods of the unit of time. 1. A display device , comprising: data lines and gate lines intersecting each other; and', 'pixels in a matrix;, 'a display panel comprisinga timing controller configured to reduce a refresh rate of the pixels in a low-speed driving mode compared to a refresh rate of the pixels in a normal driving mode; and write data to the display panel;', 'write data to the pixels during N driving frame periods within a unit of time, that is set to the refresh rate of the low-speed driving mode, under the control of the timing controller, where “N” is a positive integer of 2 to 4,', 'wherein the pixels are configured to hold a voltage of previous data for a remaining time other than the N driving frame periods of the unit of time., 'a display panel driving circuit configured to2. The display device of claim 1 , wherein the N driving frame periods comprise:N frame periods that are successively arranged; orN frame periods that are successively arranged at intervals of one frame period.3. The display device of claim 1 , wherein the timing controller varies the number of driving frame periods in which the pixels are driven claim 1 , based on a difference in a gray level between ...

PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE HAVING THE SAME

An organic light emitting display device includes a display panel including and a plurality of pixels, a gate driver configured to a normal gate signal and an alternative gate signal to the pixels, a data driver configured to provide a data signal to the pixels, an emission control driver configured to an emission control signal to the pixels, and a controller configured to control the gate driver, the data driver, and the emission control driver. Each of the pixels is driven by the normal gate signal in a first driving mode and is driven by the alternative gate signal in a second driving mode. A threshold voltage of a first transistor is compensated in the first driving mode and the threshold voltage of the first transistor is not compensated in the second driving mode. 1. An organic light emitting display device comprising:a display panel including and a plurality of pixels;a gate driver configured to provide a normal gate signal and an alternative gate signal to the pixels;a data driver configured to provide a data signal to the pixels;an emission control driver configured to provide an emission control signal to the pixels; anda controller configured to control the gate driver, the data driver, and the emission control driver,wherein each of the pixels is driven by the normal gate signal in a first driving mode in which a threshold voltage of a first transistor is compensated and is driven by the alternative gate signal in a second driving mode in which the threshold voltage of the first transistor is not compensated.2. The display device of claim 1 , wherein each of the pixels includes:an organic light emitting diode;a first transistor including a first electrode connected to a first node, a second node connected to a second node, and a gate electrode connected to a third node;a second transistor including a first electrode receiving the data signal, a second electrode connected to the first node, and a gate electrode receiving the normal gate signal;a third ...

Array Substrate And Display Driving Method Thereof As Well As Display Device

There is provided an array substrate and display driving method thereof, and a display device, wherein the array substrate comprises a common voltage line, a plurality of pixel electrodes arranged in rows and columns, and at least one first transistor arranged between two adjacent pixel electrodes, wherein a gate electrode of first transistor is coupled to the common voltage line, a first electrode of the first transistor is coupled to one of the two adjacent pixel electrodes, and a second electrode of the first transistor is coupled to the other one of the two adjacent pixel electrodes. The disclosure makes it possible to achieve polarity neutralization of grayscale voltages for the adjacent pixels without reducing the pixel aperture ratio, thus significantly reducing power consumption without affecting the display effect and achieving a power consumption even lower than the lowest power consumption achieved by the existing display devices. 1. An array substrate comprising a common voltage line , a plurality of pixel electrodes arranged in rows and columns , and at least one first transistor arranged between two adjacent pixel electrodes , wherein a gate electrode of the first transistor is coupled to the common voltage line , a first electrode of the first transistor is coupled to one of the two adjacent pixel electrodes , and a second electrode of the first transistor is coupled to the other one of the two adjacent pixel electrodes.2. The array substrate according to claim 1 , further comprising a plurality of second transistors claim 1 , a plurality of scanning lines arranged between two adjacent rows of pixel electrodes claim 1 , and a plurality of data lines arranged between two adjacent columns of pixel electrodes claim 1 , wherein a gate electrode of one of the plurality of second transistors corresponding to each of the pixel electrodes is coupled to one of the scanning lines claim 1 , a first electrode is coupled to the pixel electrode claim 1 , and a ...

DISPLAY APPARATUS AND A METHOD OF DRIVING THE SAME

A display apparatus includes a display panel including a first pixel, and a panel driver to generate a first data voltage based on a first or second gamma, to output the first data voltage to the first pixel, to generate a second data voltage based on a third or fourth gamma, and to output the second data voltage to the first pixel, wherein the first and second gammas are based on a first reference gamma, and the third and fourth gammas are based on a second reference gamma different from the first reference gamma, wherein a luminance of an image based on the first or second gammas is higher than a luminance of an image based on the first reference gamma, and wherein a data voltage based on the first gamma has a positive polarity, and a data voltage based on the second gamma has a negative polarity. 1. A display apparatus , comprising:a display panel comprising a first pixel; anda panel driver configured to generate a first data voltage based on a first gamma or a second gamma, to output the first data voltage to the first pixel, to generate a second data voltage based on a third gamma or a fourth gamma, and to output the second data voltage to the first pixel,wherein the first gamma or the second gamma is based on a first reference gamma, and the third gamma or the fourth gamma is based on a second reference gamma different from the first reference gamma,wherein a luminance of an image based on the first gamma or the second gamma is higher than a luminance of an image based on the first reference gamma, andwherein a data voltage generated based on the first gamma has a positive polarity with respect to a first common voltage, and a data voltage generated based on the second gamma has a negative polarity with respect to the first common voltage.2. The display apparatus of claim 1 , wherein a luminance of an image based on the third gamma or the fourth gamma is lower than a luminance of an image based on the second reference gamma claim 1 , andwherein a data voltage ...

DISPLAY DEVICE AND LIGHT SOURCE FOR IMAGE DISPLAY DEVICE

A display device including a first image forming device and a second image forming device. The first image forming device is configured to form a first color image by sequentially displaying a first plurality of single color images according to a first color sequence. The second image forming device is configured to form a second color image by sequentially displaying a second plurality of single color images according to a second color sequence. The first color sequence is different from the second color sequence. 1. A display device , comprising:a first image forming device configured to form a first color image by sequentially displaying a first plurality of single color images according to a first color sequence, wherein the first color sequence defines an order in which each of the first plurality of single color images is displayed, a start time for beginning to display the first plurality of single color images, and a duration over which each of the first plurality of single color images is displayed; anda second image forming device configured to form a second color image by sequentially displaying a second plurality of single color images according to a second color sequence, wherein the second color sequence defines an order in which each of the second plurality of single color images is displayed, a start time for beginning to display the second plurality of single color images, and a duration over which each of the second plurality of single color images is displayed;wherein the first color sequence is different from the second color sequence.2. The display device of claim 1 , wherein the start time for beginning to display the first plurality of single color images is different from the start time for beginning to display the second plurality of single color images.3. The display device of claim 2 , wherein the order in which each of the first plurality of single color images is displayed is the same as the order in which each of the second plurality of ...

DRIVING METHODS FOR ELECTRO-OPTIC DISPLAYS

A driving method an electro-optic display having a plurality of display pixels, the method include applying a first set of waveform to a first display pixel, the first set of waveform having at least one active portion configured to affect the optical state of the first display pixel and at least one non-active portion configured not to substantially affect the optical state of the first display pixel. The method also include applying a second set of waveform to a second display pixel, the second set of waveform having at least one active portion configured to affect the optical state of the second display pixel and at least one non-active portion configured not to substantially affect the optical state of the second display pixel, where the at least one active portions of the first and second set of waveforms do not overlap in time. 1. A method for driving an electro-optic display having a plurality of display pixels , the method comprising:applying a first set of waveform to a first display pixel, the first set of waveform having at least one active portion configured to affect the optical state of the first display pixel and at least one non-active portion configured not to substantially affect the optical state of the first display pixel; and 'wherein the at least one active portions of the first and second set of waveforms do not overlap in time.', 'applying a second set of waveform to a second display pixel, the second set of waveform having at least one active portion configured to affect the optical state of the second display pixel and at least one non-active portion configured not to substantially affect the optical state of the second display pixel;'}2. The method of claim 1 , wherein the first and second display pixels are positioned adjacent to one another.3. The method of claim 1 , wherein the at least one active portions of the first and second set of waveform have opposite voltage values.4. The method of claim 1 , wherein the at least one non-active ...

APPARATUS, SYSTEM, AND METHOD FOR VIDEO CREATION, TRANSMISSION AND DISPLAY TO REDUCE LATENCY AND ENHANCE VIDEO QUALITY

Disclosed subject matter provides apparatus, systems and methods for providing video on a video display with refreshing of a plurality of partial display pixel subgroups. 1. A method for providing video on a video display comprised of a plurality of display pixels , said method comprising:subdividing the video display into a plurality of subgroups of the plurality of display pixels to provide a plurality of partial display pixel subgroups;refreshing the plurality of partial display pixel subgroups during a video display refresh cycle, the refreshing being other than by refreshing binary sets of alternating lines of single pixels, the video display refresh cycle comprising a plurality of partial display pixel subgroup refresh periods corresponding to the plurality of partial display pixel subgroups; andoffsetting in time sequence in the video display refresh cycle at least one of the plurality of partial display pixel subgroup refresh periods from others of the plurality of partial display pixel subgroup refresh periods,wherein refreshing further comprises displaying only partial video frame data.2. A method according to and further comprising:wherein refreshing comprises refreshing at least three sets of alternating lines of single pixels each being part of different of the plurality of subgroups.3. A method for providing video on a video display comprised of a plurality of display pixels claim 1 , said method comprising:subdividing the video display into a plurality of subgroups of the plurality of display pixels to provide a plurality of partial display pixel subgroups;subdividing at least one of the plurality of subgroups of the plurality of display pixels to provide a plurality of partial display pixel sub-subgroups;refreshing the plurality of partial display pixel sub-subgroups during a video display refresh cycle, the refreshing being other than by refreshing alternating lines of single pixels, the video display refresh cycle comprising a plurality of partial ...

CIRCUIT DEVICE, ELECTRO-OPTICAL APPARATUS, AND ELECTRONIC INSTRUMENT

A display panel has a first pixel group selected by a first scan line, and second pixel group selected by second scan line. A data line is shared by pixel in the first pixel group and a pixel in the second pixel group. In first scanning period, a driving unit in a circuit device outputs a data voltage with first polarity to the first data line, and outputs data voltage with second polarity, which is polarity opposite to the first polarity, to the second data line. In second scanning period, the driving unit outputs a data voltage with third polarity to the first data line, and outputs a data voltage with fourth polarity, which is polarity opposite to the third polarity, to the second data line. A polarity setting unit in the circuit device sets the first polarity, the second polarity, the third polarity, and the fourth polarity. 1. A circuit device for driving a display panel that has a first pixel group selected by a first scan line , and a second pixel group selected by the second scan line , the first scan line and the second scan line being provided in correspondence with a first display line , and in which each of a plurality of data lines is shared by one pixel in the first pixel group and one pixel in the second pixel group , the circuit device comprising:a driving unit that drives the display panel based on display data;a control unit that controls the driving unit; anda polarity setting unit,wherein, in a first scanning period in which the first pixel group is selected by the first scan line, the driving unit outputs a data voltage with a first polarity, which is one of a positive polarity and a negative polarity, to a first data line in the plurality of data lines, and outputs a data voltage with a second polarity, which is a polarity opposite to the first polarity, to a second data line in the plurality of data lines,in a second scanning period in which the second pixel group is selected by the second scan line, the driving unit outputs a data voltage ...

METHOD FOR DRIVING INFORMATION PROCESSING DEVICE, PROGRAM, AND INFORMATION PROCESSING DEVICE

An information processing device including a display unit and an input unit is driven by a first step of inputting an input signal from the input unit, a second step of starting to move an image displayed on the display unit, a third step of lowering luminance of the image, a fourth step of checking whether the image reaches a position of predetermined coordinates, a fifth step of increasing the luminance of the image in the case where the image reaches the position of the predetermined coordinates, and a sixth step of stopping moving the image so as to perform eye-friendly display with the display unit. 1. (canceled)2. A method for driving an information processing device comprising:a first period during which an image displayed on a display unit in accordance with an input signal is moved from a first coordinate to a third coordinate through a second coordinate; anda second period during which the image is displayed on the third coordinate,wherein a luminance of the image is lowered during moving the image from the first coordinate to the second coordinate.3. The method for driving an information processing device according to claim 2 ,wherein the luminance of the image is lowered gradually.4. The method for driving an information processing device according to claim 2 ,wherein a refresh rate of display on the display unit during the first period is higher than or equal to 30 Hz, andwherein a refresh rate of display on the display unit during the second period is lower than or equal to 5 Hz.5. The method for driving an information processing device according to claim 2 ,wherein the information processing device comprises an input unit, andwherein the input signal is inputted from the input unit.6. A method for driving an information processing device comprising:a first period during which an image displayed on a display unit in accordance with an input signal is moved from a first coordinate to a third coordinate through a second coordinate;a second period during ...

LOCAL DIMMING ON LIGHT-EMITTING SCREENS FOR IMPROVED IMAGE UNIFORMITY IN SCANNING BEAM DISPLAY SYSTEMS

Systems and techniques for scanning-beam display are provided to use local dimming on the optical energy of at least one optical beam to minimize the non-uniform image brightness across the screen. This local dimming during the beam scanning can be achieved by adjusting optical energy of at least one optical beam during the scanning based on (1) the location of the scanning optical beam and (2) the predetermined distortion information at the location. 129-. (canceled)30. A display system , comprising:light sources that produce optical beams at optical wavelengths in a violet spectral range or ultra violet (UV) spectral range;a signal modulation controller in communication with the light sources to cause the optical beams to be modulated in form of a time domain signal modulation as optical pulses that carry images to be displayed;a screen that receives the optical beams to display images carried by the optical beams and includes light-emitting regions that absorb light of the optical beams to emit visible light forming the images and one or more reference marks to produce feedback light from the screen from the illumination of the optical beams;an optical scanning module that scans optical beams onto the screen to transform, via spatially scanning each optical beam along a scanning path on the screen, the time domain signal modulation in each optical beam into spatial images on the screen;a designated optical detector located off the screen can to collect the optical feedback light from the screen to convert the collected optical feedback light into a detector signal that contains position information of each optical beam on the screen;wherein the signal modulation controller receives the detector signal from the designated optical detector and operates to control the light sources, based on the time domain signal modulation and the position information of each optical beam on the screen in the received detector signal, to adjust optical energies of the optical ...

Display control method and device for implementing said method

A method of controlling the display of images in the form of a pixel array, includes for a pixel of the array, asynchronous information representing events concerning the pixel is received, a first activation of the pixel is actuated at an activation time determined by a first event of the asynchronous information, and at least a second activation of the pixel is actuated in order to repeat the first activation of the pixel at respective times defined by a refresh sequence.

METHOD AND APPARATUS FOR CONTROLLING LIQUID CRYSTAL DISPLAY BRIGHTNESS, AND LIQUID CRYSTAL DISPLAY DEVICE

This disclosure provides a method and apparatus for controlling liquid crystal display brightness, and a liquid crystal display device, and relates to the field of liquid crystal display technologies, where the method includes: determining grayscale values of all pixels in a zone image data block under a predetermined rule according to a received image signal, and pre-obtaining a zone backlight value corresponding to the zone image data block according to the grayscale values; multiplying the pre-obtained zone backlight value with a backlight value gain coefficient to obtain a backlight value of a backlight zone corresponding to the zone image data block to which a gain is applied, wherein the backlight value gain coefficient is more than 1; and outputting the backlight value of the backlight zone to a driver circuit of backlight source in the backlight zone to control the brightness of the backlight source in the backlight zone as a result of driving, thus improving the effect of contrast quality of pictures displayed by the liquid crystal display device. 1. A method for controlling liquid crystal display brightness , the method comprising:determining, by a liquid crystal display device, grayscale values of pixels in a zone image data block under a predetermined rule according to a received image signal, and pre-obtaining a zone backlight value corresponding to the zone image data block according to the grayscale values of the pixels in the zone image data block;multiplying, by the liquid crystal display device, the pre-obtained zone backlight value with a backlight value gain coefficient to obtain a backlight value of a backlight zone corresponding to the zone image data block to which a gain is applied, wherein the backlight value gain coefficient is more than 1;determining, by the liquid crystal display device, a backlight gain adjustment factor as a function of ambient luminance, and multiplying the zone backlight value of the backlight zone to which the gain ...

METHOD AND APPARATUS FOR CONTROLLING LIQUID CRYSTAL DISPLAY BRIGHTNESS, AND LIQUID CRYSTAL DISPLAY DEVICE

This disclosure provides a method, and a liquid crystal display device, and relates to the field of liquid crystal display technologies, where the method includes: determining grayscale values of pixels in zone image data block under a predetermined rule according to a received image signal, and pre-obtaining a zone backlight value corresponding to the zone image data block according to the grayscale values in the zone image data block; determining a backlight gain coefficient according to a backlight value gain variable and an ambient luminance revision variable, and multiplying the zone backlight value with the backlight gain coefficient to obtain backlight values of a backlight zone corresponding to the zone image data block to which a gain is applied, wherein the backlight value gain variable is determined by the grayscale values, and the ambient luminance revision variable is determined by ambient luminance; and outputting the backlight value of the backlight zone to a driver circuit of backlight source in the backlight zone to control the brightness of the backlight source in the backlight zone as a result of driving, thus improving the effect of the contrast quality of pictures of the liquid crystal display device. 1. A method for controlling liquid crystal display brightness , the method comprising:determining, by a liquid crystal display device, grayscale values of pixels in a zone image data block under a predetermined rule according to a received image signal, and pre-obtaining a zone backlight value corresponding to the zone image data block according to the grayscale values;determining, by the liquid crystal display device, a backlight gain coefficient according to a backlight value gain variable and an ambient luminance revision variable, and multiplying, by the liquid crystal display device, the zone backlight value with the backlight gain coefficient to obtain a backlight value, to which a gain is applied, of a backlight zone corresponding to the ...

METHOD AND APPARATUS FOR CONTROLLING LIQUID CRYSTAL DISPLAY BRIGHTNESS, AND LIQUID CRYSTAL DISPLAY DEVICE

This disclosure provides a method, and a liquid crystal display device, where the method includes: determining grayscale values of pixels in a zone image data block under a predetermined rule according to a received image signal; pre-obtaining a zone backlight value corresponding to the zone image data block according to the grayscale values; calculating an adjusted backlight value of a backlight zone corresponding to the zone image data block, based on the zone backlight value, a backlight value gain variable, and an ambient luminance revision variable; outputting the adjusted backlight value to a driver circuit of a backlight source in the backlight zone; and driving the backlight source according to the adjusted backlight value to control brightness of the backlight source in the backlight zone. 1. A method of controlling liquid crystal display brightness , the method comprising:determining, by a processor, grayscale values of pixels in a zone image data block under a predetermined rule according to a received image signal;pre-obtaining a zone backlight value corresponding to the zone image data block according to the grayscale values;calculating, by the processor, an adjusted backlight value of a backlight zone corresponding to the zone image data block, based on the zone backlight value, a backlight value gain variable, and an ambient luminance revision variable, wherein the backlight value gain variable is determined by the grayscale values, and the ambient luminance revision variable is determined by ambient luminance;outputting, by the processor, the adjusted backlight value to a driver circuit of a backlight source in the backlight zone; anddriving the backlight source, by the driver circuit, according to the adjusted backlight value to control brightness of the backlight source in the backlight zone.2. The method according to claim 1 , wherein calculating claim 1 , by the processor claim 1 , an adjusted backlight value of a backlight zone corresponding to ...

COMPARATOR CIRCUIT, A/D CONVERSION CIRCUIT, AND DISPLAY APPARATUS

A comparator circuit according to the present disclosure includes: a first switch section that selectively takes in a signal voltage; a second switch section that selectively takes in a control waveform; a differential amplifier including a non-inverted input end connected to each of output ends of the first switch section and the second switch section; a capacity section including one end connected to an inverted input end of the differential amplifier and the other end supplied with a reference voltage; and a third switch section that selectively short-circuits the inverted input end and an output end of the differential amplifier. 1. A comparator circuit , comprising:a first switch section that selectively takes in a signal voltage;a second switch section that selectively takes in a control waveform;a capacity section including one end connected to each of output ends of the first switch section and the second switch section;a differential amplifier including an inverted input end connected to the other end of the capacity section and a non-inverted input end supplied with a reference voltage; anda third switch section that selectively short-circuits the inverted input end and an output end of the differential amplifier.2. The comparator circuit according to claim 1 ,wherein the reference voltage is a fixed voltage.3. The comparator circuit according to claim 1 ,wherein the control waveform has a voltage variation of sawtooth waveform.4. The comparator circuit according to claim 1 , whereinthe first switch section and the third switch section are driven by switch control pulses having the same phase, andthe second switch section is driven by a switch control pulse having a phase opposite to that of the first switch section and the third switch section.5. The comparator circuit according to claim 1 , further comprisinga current supply section that is connected to the output end of the differential amplifier and supplies a current according to an output of the ...

Organic light emitting display panel

An organic light emitting display panel includes a first sub-pixel, a second sub-pixel, and a third sub-pixel for respectively emitting differently colored lights, each of the sub-pixels including a switching transistor connected to a data line, and having a gate electrode configured to receive a scan signal, a driving transistor connected to the switching transistor, an emission control transistor connected to the driving transistor, and having a gate electrode configured to receive an emission control signal, an emission control line connected to the gate electrode of the emission control transistor, an organic light emitting diode connected the emission control transistor, and coupling capacitor including a first electrode including a portion of the emission control line, and a second electrode including an anode of the organic light emitting diode overlapping the portion of the emission control line, wherein capacitances of a first capacitor including the coupling capacitor of the first sub-pixel and a second capacitor including the coupling capacitor of the second sub-pixel are greater than a capacitance of a third capacitor including the coupling capacitor of the third sub-pixel.

Display With Spatial and Temporal Refresh Rate Buffers

A display may have an array of pixels. The display may be controlled using display driver circuitry. The display driver circuitry may analyze image data to be displayed on the array. When static content is detected, the rate at which the pixels are refreshed may be adjusted to conserve power. If a static image is detected, the gate lines may be asserted at a lower refresh rate than if moving content is detected. To avoid visible artifacts, the display driver circuitry may use temporal and spatial refresh rate buffers. Temporal buffers ensure that refresh rates are changed gradually as a function of time, thereby minimizing flicker. Spatial refresh rate buffers are used to provide a smooth transition between low refresh rate and high refresh rate regions in a display as a function of position. 1. A display , comprising:display driver circuitry that receives image data; andan array of pixels for displaying images based on the image data, wherein the display driver circuitry refreshes the pixels at multiple refresh rates using a refresh rate buffer to prevent visual artifacts due to refresh rate transitions.2. The display defined in wherein the multiple refresh rates include a first refresh rate and a second refresh rate that is lower than the first refresh rate and wherein the refresh rate buffer comprises a temporal refresh rate buffer associated with an intermediate refresh rate between the first and second refresh rates.3. The display defined in wherein the display driver circuitry comprises:a content-dependent refresh rate controller that receives the image data and that analyzes the image data to produce a target refresh rate for use in refreshing the array of pixels.4. The display defined in wherein the display driver circuitry further comprises:storage that stores information on refresh rates available for use in refreshing the array of pixels.5. The display defined in wherein the display driver circuitry further comprises a pixel pipeline that receives the ...

OVER-DRIVING METHOD, CIRCUIT, DISPLAY PANEL AND DISPLAY APPARATUS

An over-driving method, circuit, display panel and 3D display apparatus pertain to a field of 3D display. The over-driving method includes: acquiring an actual gray scale value outputted from any pixel in a previous frame; acquiring an original gray scale value to be outputted from the corresponding pixel in a current frame; and looking up an over-driving comparison table according to the actual gray scale value in the previous frame and the original gray scale value in the current frame, and determining an actual gray scale value that should be outputted in the current frame. The method can quicken the response speed of the liquid crystal and improve the phenomenon of crosstalk when being used in a 3D mode of shutter glasses. 18-. (canceled)9. An over-driving method , comprising steps of:acquiring an actual gray scale value outputted from any pixel in a previous frame;acquiring an original gray scale value to be outputted from the corresponding pixel in a current frame; andlooking up an over-driving comparison table according to the actual gray scale value outputted from the any one pixel in the previous frame and the original gray scale value to be outputted from the corresponding pixel in the current frame, and determining an actual gray scale value to be outputted in the current frame.10. The over-driving method of claim 9 , wherein over-driving values corresponding to values changing from initial gray scale value to object gray scale value are stored in the over-driving comparison table.11. The over-driving method of claim 10 , wherein the step of looking up an over-driving comparison table according to the actual gray scale value outputted from the any one pixel in the previous frame and the original gray scale value to be outputted from the corresponding pixel in the current frame and determining an actual gray scale value to be outputted in the current frame comprises:looking up the over-driving comparison fable by regarding the actual gray scale value ...

LIQUID CRYSTAL DISPLAY DEVICE, TELEVISION RECEIVER, AND DISPLAY METHOD FOR LIQUID CRYSTAL DISPLAY DEVICE

A liquid crystal display device includes a liquid crystal panel having a plurality of pixels grouped into four types of type 1, type 2, type 3, and type 4; a panel driver circuit connected to the liquid crystal panel to drive the liquid crystal panel; and a display control circuit connected to the panel driver circuit, wherein said display control circuit divides each refresh cycle of the image signal into consecutive first to fourth terms and causes the panel driver circuit to drive the liquid crystal panel to perform a halftone display by changing pixel luminance during each refresh cycle composed of the first to fourth terms, and wherein said display control circuit provides timing signals and gradation data to the panel driver circuit so that, for a given halftone to be displayed in a refresh cycle, pixels belonging to respective types in the liquid crystal panel are driven such that the halftone is generated as averaged over the first to fourth terms. 1. A liquid crystal display device , comprising:a liquid crystal panel having a plurality of pixels arranged in a matrix, said plurality of pixels being grouped into four types of type 1, type 2, type 3, and type 4;a panel driver circuit connected to the liquid crystal panel to drive the liquid crystal panel; anda display control circuit connected to the panel driver circuit, said display control circuit receiving an image signal,wherein said display control circuit divides each refresh cycle of the image signal into consecutive first to fourth terms and causes the panel driver circuit to drive the liquid crystal panel to perform a halftone display by changing pixel luminance during each refresh cycle composed of the first to fourth terms, andwherein said display control circuit provides timing signals and gradation data to the panel driver circuit so that, for a given halftone to be displayed in a refresh cycle, pixels belonging to respective types in the liquid crystal panel are driven such that:on pixels in ...

DATA DRIVER OF A MICROLED DISPLAY

A data driver of a microLED display includes clock generators that generate pulse width modulation (PWM) clocks of corresponding primary colors respectively; counters that receive the PWM clocks of corresponding primary colors respectively and accordingly generate corresponding PWM signals; and comparators associated with corresponding data channels respectively for comparing a held data signal with the corresponding PWM signal, thereby generating a comparison result signal. In one embodiment, the data driver further includes switches configured to electrically short output nodes of channel amplifiers of corresponding primary colors respectively for testing uniformity of microLEDs of one color. 1. A data driver of a microLED display , comprising:a plurality of clock generators that generate pulse width modulation (PWM) clocks of corresponding primary colors respectively;a plurality of counters that receive the PWM clocks of corresponding primary colors respectively and accordingly generate corresponding PWM signals; anda plurality of comparators associated with corresponding data channels respectively, each said comparator comparing a held data signal with the corresponding PWM signal, thereby generating a comparison result signal;wherein frequencies of the PWM clocks are different.2. The data driver of claim 1 , wherein the primary colors comprise red claim 1 , green and blue.3. The data driver of claim 1 , wherein the comparison result signal becomes logic high when the held data signal is greater than the PWM signal claim 1 , otherwise the comparison result signal becomes logic low.4. The data driver of claim 1 , further comprising:a plurality of shift registers associated with data channels respectively for generating sampling signals;a plurality of sampling latches associated with data channels respectively, each said sampling latch latching a display data signal according to the sampling signal, thereby outputting a sampled data signal; anda plurality of ...

DISPLAY DRIVER, DISPLAY SYSTEM AND MICROCOMPUTER

Low power consumption is realized focusing on the refresh interval of a low leakage display panel. Display systems and microcomputers are described herein. One embodiment of a display system includes a display driver. The driver receives an enable signal from the outside, stops the display operation of an internal circuit in an inactive state of the enable signal, and resumes the display operation of the internal circuit in an active state. Instead of the enable signal, a command supplied from the outside may be used. When resuming the display operation, the display driver performs control to make the start timing of the display operation earlier for a circuit that requires a long time for activation. A microcomputer that outputs an enable signal or a command controls the output or the output stop of display data according to the state of the enable signal or the command. 1. A display system , comprising:an input interface circuit configured to receive display data and a synchronization signal;a timing generating circuit configured to generate an internal timing signal in synchronization with the synchronization signal; andfirst and second circuits configured to generate and output, respectively, a signal supplied to a scan line of a display panel and a signal supplied to a signal line of the display panel, using the display data input from the input interface circuit, the first and second circuits configured to perform a display operation controlled by the internal timing signal,wherein the second circuit includes a circuit having a longer activation time compared with an activation time of the first circuit,the timing generating circuit is configured to, upon receipt of an enable signal, stop a display operation of the input interface circuit and the first and second circuits in response to an inactive state of the enable signal, and resume the display operation of the input interface circuit and the first and second circuits in response to an active state of the ...

VARIABLE REFRESH RATE GAMMA CORRECTION

A method, computer program product, and system perform gamma correction for a variable refresh rate display panel. An image is received for display on a screen of a display device. The image is adjusted based on gamma correction factors that are dependent on a variable refresh rate of the display device and the adjusted image is output for display on the screen of the display device. 1. A method , comprising:receiving an image for display on a screen of a display device;adjusting the image based on gamma correction factors that are dependent on a variable refresh rate of the display device; andoutputting the adjusted image for display on the screen of the display device.2. The method of claim 1 , further comprising claim 1 , prior to adjusting the image claim 1 , writing the gamma correction factors associated with a first refresh rate to a first lookup table.3. The method of claim 1 , further comprising claim 1 , prior to adjusting the image claim 1 , determining the refresh rate for a currently displayed image.4. The method of claim 3 , wherein determining the refresh rate comprises measuring a frame duration time for the currently displayed image.5. The method of claim 1 , wherein adjusting the image comprises:obtaining a first gamma correction factor and a second gamma correction factor from a look-up-table;interpolating between the first gamma correction factor and the second gamma correction factor based on a refresh rate for a currently displayed image to produce a third gamma correction factor corresponding to the refresh rate; andscaling at least one pixel component of the image by the third gamma correction factor.6. The method of claim 1 , wherein the gamma correction factors are also configured to perform overdrive operations.7. The method of claim 1 , wherein sets of gamma correction factors are stored in look-up tables claim 1 , each set of gamma correction factors corresponding to a different refresh rate claim 1 , and the gamma correction factors are ...

COMPARATOR CIRCUIT, A/D CONVERSION CIRCUIT, AND DISPLAY APPARATUS

A comparator circuit according to the present disclosure includes: a first switch section that selectively takes in a signal voltage; a second switch section that selectively takes in a control waveform; a differential amplifier including a non-inverted input end connected to each of output ends of the first switch section and the second switch section; a capacity section including one end connected to an inverted input end of the differential amplifier and the other end supplied with a reference voltage; and a third switch section that selectively short-circuits the inverted input end and an output end of the differential amplifier. 1. A comparator circuit , comprising:a first switch section;a second switch section;a capacity section that includes a first end and a second end, wherein the first end of the capacity section is connected to each of an output end of the first switch section and an output end of the second switch section;a differential amplifier that includes:an inverted input end connected to the second end of the capacity section, anda non-inverted input end supplied with a reference voltage; anda third switch section configured to selectively short-circuit the inverted input end and an output end of the differential amplifier.2. The comparator circuit according to claim 1 , wherein the reference voltage is a fixed voltage.3. The comparator circuit according to claim 1 , wherein the second switch section is configured to selectively receive a control waveform.4. The comparator circuit according to claim 1 , whereineach of the first switch section and the third switch section is driven by a first switch control pulse that has a first phase, andthe second switch section is driven by a second switch control pulse that has a second phase opposite to the first phase.5. The comparator circuit according to claim 1 , further comprisinga current supply section connected to the output end of the differential amplifier, wherein the current supply section is ...

METHOD OF OPERATING DISPLAY PANEL AND DISPLAY APPARATUS PERFORMING THE SAME

A method of operating a display panel, the method including obtaining a first total grayscale value associated with a plurality of first subpixel data, the plurality of first subpixel data corresponding to a plurality of first data voltages applied to a plurality of data lines during a first horizontal period, obtaining a second total grayscale value associated with a plurality of second subpixel data, the plurality of second subpixel data corresponding to a plurality of second data voltages applied to the plurality of data lines during a second horizontal period subsequent to the first horizontal period, and selectively compensating the plurality of second subpixel data based on the first total grayscale value and the second total grayscale value. 1. A method of operating a display panel , the method comprising:obtaining a first total grayscale value associated with a plurality of first subpixel data, the plurality of first subpixel data corresponding to a plurality of first data voltages applied to a plurality of data lines during a first horizontal period;obtaining a second total grayscale value associated with a plurality of second subpixel data, the plurality of second subpixel data corresponding to a plurality of second data voltages applied to the plurality of data lines during a second horizontal period subsequent to the first horizontal period; andselectively compensating the plurality of second subpixel data based on the first total grayscale value and the second total grayscale value.2. The method of claim 1 , wherein the obtaining of the first total grayscale value comprises:generating a first sum grayscale value by adding first grayscale values of a plurality of positive subpixel data from among the plurality of first subpixel data, each of the plurality of positive subpixel data corresponding to a positive data voltage having a positive polarity with respect to a common voltage;generating a second sum grayscale value by adding second grayscale values ...

DISPLAY DEVICE

A display device uses a control unit to analyze an image obtained by picturing a user using an image-capturing unit and detect a line of sight of the user with respect to the display region of a display unit. Further, the control unit identifies observation condition information indicating the condition of the user viewing the display region based on the detected line of sight of the user. A display control unit writes the image signal in the display region of the display unit for each frame, wherein the display control unit halts, for a predetermined frame period, writing of the image signal in a controlled region when the identified observation condition information meets a predetermined requirement, the controlled region being at least a part of the display region. 1: A display device comprising:a display unit having a display region in which an image signal is written;a detection unit configured to analyze an image obtained by picturing a user and detect a line of sight of the user with respect to the display region;an identification unit configured to identify observation condition information indicating a condition of the user viewing the display region based on the line of sight detected by the detection unit; anda display control unit configured to write the image signal in the display region for each frame,wherein the display control unit halts, for a predetermined frame period, writing of the image signal in a controlled region when the observation condition information identified by the identification unit meets a predetermined requirement, the controlled region being at least a part of the display region.2: The display device according to claim 1 , wherein the display control unit changes a length of the predetermined frame period depending on the observation condition information.3: The display device according to claim 1 , wherein the controlled region is a static image region of the display region in which a static image contained in an image ...

El display device, driving method thereof, and electronic equipment provided with the el display device

An EL display device capable of performing clear multi-gradation color display and electronic equipment provided with the EL display device are provided, wherein gradation display is performed according to a time-division driving method in which the luminescence and non-luminescence of an EL element ( 109 ) disposed in a pixel ( 104 ) are controlled by time, and the influence by the characteristic variability of a current controlling TFT ( 108 ) is prevented. When this method is used, a data signal side driving circuit ( 102 ) and a gate signal side driving circuit ( 103 ) are formed with TFTs that use a silicon film having a peculiar crystal structure and exhibit an extremely high operation speed.

SENSOR-EQUIPPED DISPLAY DEVICE, CONTROL DEVICE, AND CONTROL METHOD

A sensor-equipped display device is provided in which respective periods of time for the driving for display and the driving for detecting an object are ensured, while the mutual interference therebetween is suppressed. The sensor-equipped display device includes a scanning driving unit () that repeats a scanning operation of sequentially selecting a plurality of display scanning lines (G) in a first direction, and a data driving unit () that applies voltages to a plurality of data lines (S). Further, the sensor-equipped display device includes a detection control unit () that repeats a scanning operation of sequentially driving a plurality of detection scanning lines (DRL) in the first direction, and detects signals of detection lines (SNL). Between start of one screen scanning operation with respect to the detection scanning lines (G) and end of the same, a screen scanning operation with respect to the display scanning lines (DRL) starts, and time for scanning one screen with respect to detection scanning lines (DRL) is equal to, or shorter than, time for scanning one screen with respect to the display scanning lines (G). 1. A sensor-equipped display device comprising a screen that displays an image , and a sensor that detects contact or approach of an object with respect to the screen , the sensor-equipped display device comprising:a plurality of display scanning lines that are arrayed in a first direction,a plurality of data lines that are arrayed in a second direction that is different from the first direction;a plurality of switching elements that are provided in correspondence to points of intersection between the display scanning lines and the data lines, respectively;a plurality of pixel electrodes that are connected to the switching elements, respectively;a scanning driving unit that repeats a screen scanning operation with respect to the display scanning lines, the screen scanning operation with respect to the display scanning lines being an operation of ...

DISPLAY APPARATUS

According to an aspect, a display apparatus includes a plurality of pixels including light-emitting elements, a video signal driver that applies a video voltage or an initialization voltage to the pixels based on a video signal, a scan signal driver that applies a scan voltage to the pixels based on the video signal, and a controller that controls an initialization period in which the initialization voltage is applied to the pixels and a video voltage writing period in which the video voltage is applied to the pixels, in accordance with the tone of the video signal. 1. A display apparatus comprising:a plurality of pixels including light-emitting elements;a video signal driver configured to apply a video voltage or an initialization voltage to the pixels based on a video signal;a scan signal driver configured to apply a scan voltage to the pixels based on the video signal; anda controller configured to control an initialization period in which the initialization voltage is applied to the pixels and a video voltage writing period in which the video voltage is applied to the pixels, in accordance with a tone of the video signal.2. The display apparatus according to claim 1 ,wherein the controller makes the video voltage writing period longer when the video signal has a tone higher than a certain threshold than the period when the video signal has a tone equal to or lower than the threshold.3. The display apparatus according to claim 1 ,wherein the controller makes the initialization period longer when the video signal has a tone lower than a certain threshold than the period when the video signal has a tone equal to or higher than the threshold.4. The display apparatus according to claim 1 ,wherein the controller shortens the initialization period as the video signal has a higher tone.5. The display apparatus according to claim 1 ,wherein the controller extends the video voltage writing period as the video signal has a higher tone. This application claims priority from ...

METHODS AND APPARATUS FOR DRIVING ELECTRO-OPTIC DISPLAYS

Waveforms for driving electro-optic displays, especially bistable electro-optic displays, are modified by one or more of insertion of at least one balanced pulse pair into a base waveform; excision of at least one balanced pulse pair from the base waveform; and insertion of at least one period of zero voltage into the base waveform. Such modifications permit fine control of gray levels. 1. A method for driving an electro-optic display having at least one pixel capable of achieving at least three different gray levels including two extreme optical states , the method comprising:applying a modified base waveform to the pixel to drive the pixel to a selected gray level,wherein the base waveform comprises at least one reset pulse to drive the pixel to, or close to, one of the extreme optical states, and a set pulse to drive the pixel from the selected extreme optical state to a gray level different from the selected extreme optical state,wherein the modified base waveform includes a modification to the base waveform of at least one of the following:(a) insertion of at least one balanced pulse pair into the base waveform;(b) excision of at least one balanced pulse pair from the base waveform; and(c) insertion of at least one period of zero voltage into the base waveform,where “balanced pulse pair” denotes a sequence of two pulses of opposite polarity such that the total impulse of the balanced pulse pair is essentially zero.2. The method of claim 1 , wherein the base waveform is modified by insertion of at least one balanced pulse pair or excision of at least one balanced pulse pair.3. The method according to claim 2 , wherein the two pulses of the balanced pulse pair are each of constant voltage but of opposite polarity and are equal in duration.4. The method according to claim 2 , wherein the period in the base waveform occupied by each excised balanced pulse pair is replaced by a period of zero voltage.5. The method according to claim 2 , wherein at least one balanced ...

DISPLAY DEVICE AND METHOD OF DRIVING THE SAME

A display device including a first pixel area including first pixels, a second pixel area including second pixels, a third pixel area including third pixels, and a display driver configured to control image display operations of the first pixel area, the second pixel area, and the third pixel area according to a first mode or a second mode, wherein the first pixel area includes a first sub-pixel area, and a second sub-pixel area between the first sub-pixel area and the second pixel area, and wherein the first sub-pixel area is configured to display a black image in the first mode, and the second sub-pixel area is configured to display a dummy image. 1. A display device comprising:a first pixel area comprising first pixels;a second pixel area comprising second pixels; anda display driver configured to control image display operations of the first pixel area and the second pixel area according to a first mode or a second mode,wherein the first pixel area comprises a first sub-pixel area, and a second sub-pixel area between the first sub-pixel area and the second pixel area,wherein the display driver is configured to display a valid image via the second pixel area in the first mode, and to display a valid image via the first pixel area and the second pixel area in the second mode, andwherein, in the first mode, at least a portion of the second sub-pixel area is to repeatedly perform a light-emitting operation in a first period and a non-light-emitting operation in a second period.2. The display device according to claim 1 , wherein the second sub-pixel area comprises a first pixel group and a second pixel group claim 1 , each of which comprises some of the first pixels claim 1 , andwherein the first pixel group and the second pixel group are to alternately emit light in the first mode.3. The display device according to claim 2 , wherein the first pixel group and the second pixel group are included in one pixel row of the first pixels.4. The display device according to ...

Method and apparatus for generation of gray scale adjustment voltage and panel driver circuit

The present invention relates to a method and apparatus for generating gray scale adjustment voltages and a panel driver circuit using the same. With the method provided in the invention, said apparatus for generating gray scale adjustment voltages generates a plurality of gray-scale reference voltage groups at a given time interval T 0 , and provides them for, such as a data driver circuit for adjusting gray scale of pictures by means of the reference gray-scale voltages, wherein values of the gray-scale reference voltages in each gray-scale reference voltage group are different from one another, and the time interval T 0 need to be less or equal to a quotient from the displaying time in each frame divided by the product of the number of pixels in the vertical direction of a display screen and the number of gray-scale reference voltage groups. The present invention can improve the rate for outputting the gray scale voltages by said gray scale adjustment voltages generation apparatus without modifying the original data driver circuit in the liquid crystal display, such that a displaying effect of higher-order is obtained and improvement in picture quality is accomplished. The present invention may be widely used in various image display devices.

Liquid crystal display method, device, and storage medium

Liquid crystal display methods and devices are disclosed. In one embodiment, a method comprises acquiring a grayscale value of each pixel in a first content displayed on a liquid crystal panel, and adjusting a refresh rate of the liquid crystal panel from a first refresh rate to a second refresh rate if the grayscale value of the each pixel in the first content is lower than a predetermined value, wherein the second refresh rate is lower than the first refresh rate. The method enables a reduction of power consumption of liquid crystal panel and associated display chip and processor.

IMAGE DATA PROCESSING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME

An image data processing device of the inventive concept includes an image data converter and a light emission amount calculator. The image data converter converts image data into modulation image data. The image data includes first to third data corresponding to the first to third colors, respectively. The modulation image data includes first to fourth modulation data corresponding to the first to fourth colors, respectively. The light emission amount calculator calculates the fourth modulation data based on the ratio between the first data and the second data. The fourth color includes a color based on mixing the first color and the second color. 1. An image data processing device comprising:an image data converter configured to convert image data comprising a first data corresponding to a first color, a second data corresponding to a second color, and a third data corresponding to a third color into modulation image data comprising a first modulation data corresponding to the first color, a second modulation data corresponding to the second color, a third modulation data corresponding to the third color, and a fourth modulation data corresponding to a fourth color; anda light emission amount calculator configured to calculate the fourth modulation data based on a ratio between the first data and the second data,wherein the first to third colors are different from each other, and the fourth color comprises a color based on mixing the first color and the second color.2. The image data processing device of claim 1 , wherein the light emission amount calculator is configured to determine a component amount corresponding to an upper limit of the fourth modulation data based on a lowest value from among the first data and the second data.3. The image data processing device of claim 2 , wherein when the ratio is less than a reference ratio claim 2 , the light emission amount calculator is configured to determine the component amount as a value of the fourth modulation ...

LIGHT EMITTING DEVICE, DRIVING METHOD OF LIGHT EMITTING DEVICE AND ELECTRONIC DEVICE

By controlling the luminance of light emitting element not by means of a voltage to be impressed to the TFT but by means of controlling a current that flows to the TFT in a signal line drive circuit, the current that flows to the light emitting element is held to a desired value without depending on the characteristics of the TFT. Further, a voltage of inverted bias is impressed to the light emitting element every predetermined period. Since a multiplier effect is given by the two configurations described above, it is possible to prevent the luminance from deteriorating due to a deterioration of the organic luminescent layer, and further, it is possible to maintain the current that flows to the light emitting element to a desired value without depending on the characteristics of the TFT. 1. (canceled)2. A display device comprising: a first channel-formation region;', 'a second channel-formation region; and', 'an impurity region;, 'a semiconductor layer comprisinga gate insulated film over the semiconductor layer;a first gate electrode overlapping with the first channel-formation region with the gate insulated film interposed therebetween;a second gate electrode overlapping with the second channel-formation region with the gate insulated film interposed therebetween;a first insulated film over the semiconductor layer, the first gate electrode, and the second gate electrode;a connection wiring over the first insulated film;a power supply line over the first insulated film;a pixel electrode electrically connected to the connection wiring;an organic light emitting layer over the pixel electrode;a cathode over the organic light emitting layer; anda storage capacitor,wherein a first electrode of the storage capacitor is electrically connected to the first gate electrode,wherein a second electrode of the storage capacitor is electrically connected to the power supply line;wherein the power supply line is electrically connected to the impurity region through the second ...

DISPLAY APPARATUS AND A METHOD OF DRIVING DISPLAY PANEL USING THE SAME

A display apparatus includes a display panel, a timing controller and a data driver. The display panel includes a plurality of sub-pixels to display an image. The timing controller generates a data signal and compensation data based on an optimum common voltage of odd-numbered line sub-pixels and an optimum common voltage of even-numbered line sub-pixels. The data driver converts the data signal into a data voltage and to output the data voltage to the display panel. 1. A display apparatus comprising:a display panel configured to display an image, the display panel comprising a plurality of odd-numbered line sub-pixels and a plurality of even-numbered line sub-pixels;a timing controller configured to generate a data signal and compensation data based on an optimum common voltage of the odd-numbered line sub-pixels and an optimum common voltage of the even-numbered line sub-pixels; anda data driver configured to convert the generated data signal into a data voltage and to output the data voltage to the display panel.2. The display apparatus of claim 1 , wherein the data signal is adjusted by the compensation data corresponding to the optimum common voltage of the even-numbered line sub-pixels to the voltage level of a data voltage corresponding to the optimum common voltage of the odd-numbered line sub-pixels.3. The display apparatus of claim 2 , wherein the compensation data is obtained by subtracting the optimum common voltage of the even-numbered line sub-pixels from the optimum common voltage of the odd-numbered line sub-pixels.4. The display apparatus of claim 3 , wherein the data driver outputs a data voltage corresponding to the even-numbered line sub-pixels by adding the optimum common voltage of even-numbered line sub-pixels to the compensation data.5. The display apparatus of claim 1 , wherein the data signal is adjusted by the compensation data corresponding to the optimum common voltage of the odd-numbered line sub-pixels to the voltage level of a data ...

MECHANISMS FOR REDUCING LATENCY AND GHOSTING DISPLAYS

In one embodiment, an apparatus having an integrated circuit made of substrate, at least three light emitters arranged on the substrate, and driver circuitry located on the integrated circuit, the driver circuitry to drive an ultra low persistence display to remove ghosting and nausea. 1. An apparatus , comprising: at least three light emitters arranged on the substrate; and', 'driver circuitry located on the integrated circuit, the driver circuitry to drive an ultra low persistence display to remove ghosting and nausea., 'an integrated circuit made of substrate;'}2. The apparatus of claim 1 , wherein the at least three light emitters comprise light emitting diodes (LEDs) having a response time that allows information to be driven in a fast and shorter time period than a traditional LED.3. The apparatus of claim 2 , wherein the light emitting diodes comprise micro light emitting diodes (micro-LEDs) having the response time that allows the information to be driven in the fast and shorter time period than the traditional LED.4. The apparatus of claim 2 , wherein the light emitting diodes comprise organic light emitting diodes (OLEDs) having the response time that allows the information to be driven in the fast and shorter time period than the traditional LED.5. The apparatus of claim 1 , wherein a duty cycle is modulated to allow more data to be sent in a shorter period of time to drive the at least three light emitters for achieving the ultra low persistence display to remove ghosting and nausea.6. The apparatus of claim 1 , wherein digital values for each light emitter are driven by the driver circuitry to each light emitter using a pulse width modulation (PWM) method.7. The apparatus of claim 7 , wherein a duty cycle is modulated to allow more data to be sent in a shorter period of time to drive each of the light emitters.8. The apparatus of claim 7 , wherein the data is sent across 10% of an entire frame to drive each light emitter to achieve the ultra low ...

Display device and method of driving the same

A display device includes a display panel including a plurality of data lines and a plurality of color pixels arranged into rows, a black-grayscale correcting circuit, and a data driving circuit. The black-grayscale circuit corrects a black-level of black-grayscale data of input grayscale data to generate corrected image data. The black-grayscale circuit corrects the black-grayscale data to be applied to a current one of the rows during a current horizontal period based on the input grayscale data to be applied to a previous one of the rows during a previous horizontal period and the input grayscale data to be applied to a next one of the rows during a next horizontal period. The data driving circuit converts the corrected image data into data voltages for output to the data lines.

DISPLAY DEVICE AND DRIVING METHOD THEREOF

A display device includes: a display panel to display an image; a signal controller to determine whether an input image signal is a still image signal, and if the input image signal is a still image signal, further determine whether image switching occurs, and if image switching occurs, to compensate image data according to frame data after the image is switched by using data values of two pieces of frame data between which the image switching occurs; and a data driver to generate a data signal based on the image data and to output the data signal to the display panel. 1. A display device , comprising:a display panel to display an image;a signal controller to determine whether an input image signal is a still image signal, and if the input image signal is a still image signal, to further determine whether image switching occurs, and if image switching occurs, to compensate image data according to frame data after the image is switched by using data values of two pieces of frame data between which the image switching occurs; anda data driver to generate a data signal based on the image data and to output the data signal to the display panel.2. The display device of claim 1 , whereinthe signal controller includes an image determiner to compare at least two pieces of frame data of the input image signal that are adjacent to each other, to determine whether the input image signal is a still image signal.3. The display device of claim 2 , whereinthe image determiner can receive a panel self-refresh (PSR) control signal to control a PSR mode for displaying a still image with the input image signal, and to determine whether the input image signal is a still image signal based on the PSR control signal.4. The display device of claim 2 , whereinif the image determiner determines that the input image signal is a still image signal, the image determiner can compare at least two pieces of frame data of the input image signal that are adjacent to each other, to determine whether ...

Integrated display system

What is disclosed are systems and methods for emissive display systems constructed on integrated architecture platforms, for which the pixels are smart and can behave differently under different conditions to save power, provide better image quality, and/or conserve their value to reduce the power consumption associated with programming.

DISPLAY DEVICE AND METHOD FOR DRIVING SAME

When a clock signal pulse number and a compensation-target-line address indicating a compensation-target row match, the following control is carried out with a time point being a starting point of a current measurement period, the time point being one horizontal scanning period after a time point of the match. At a current measurement period starting point and ending point, only the potential of the one of the clock signals applied to a unit circuit corresponding to the compensation-target row is changed. Throughout the current measurement period, the clock operation of the clock signals is stopped. A monitor enable signal, that is applied to a control terminal of an output control transistor for controlling active signal output to a monitor control line, is only set to a high level during the current measurement period. 2. The display device according to claim 1 , wherein each of the second unit circuits includes:a first output terminal connected to a preceding stage and a subsequent stage and configured to output a state signal indicating an internal state;a second output terminal connected to a corresponding monitoring control line; andan output control transistor having a control terminal to which the monitoring enabling signal is provided; a first conduction terminal connected to the first output terminal; and a second conduction terminal connected to the second output terminal.3. The display device according to claim 2 , further comprising a level shifter circuit configured to convert a voltage level of the monitoring enabling signal provided to the control terminal of the output control transistor.4. The display device according to claim 1 , whereinthe current measurement circuit performs drive current measurement based on a first grayscale and drive current measurement based on a second grayscale,the drive control unit further includes a grayscale identification counter configured to identify whether the drive current measurement based on the first grayscale ...

DISPLAY APPARATUS AND CONTROL METHOD THEREOF

A display apparatus is provided including a display panel, a memory configured to store first image quality compensation data corresponding to a driving frequency of the display panel, and second image quality compensation data corresponding to a frame frequency of an input image to the display panel, the second image quality compensation data corresponding to the first image quality compensation data adjusted based on a luminance value of the input image, and a timing controller configured to, based on the frame frequency of the image input to the display panel being varied, perform image quality compensation on the input image using the second image quality compensation data, and to control the display panel to display the input image based on the image quality compensation. 1. A display apparatus comprising:a display panel;a memory configured to store first image quality compensation data corresponding to a driving frequency of the display panel, and second image quality compensation data corresponding to a frame frequency of an input image to the display panel, the second image quality compensation data corresponding to the first image quality compensation data adjusted based on a luminance value of the input image; anda timing controller configured to, based on the frame frequency of the image input to the display panel being varied, perform image quality compensation on the input image using the second image quality compensation data, and to control the display panel to display the input image based on the image quality compensation.2. The display apparatus as claimed in claim 1 , wherein the timing controller is configured to claim 1 , based on the frame frequency of the image input to the display panel being varied claim 1 , perform the image quality compensation on the input image using both the first image quality compensation data and the second image quality compensation data.3. The display apparatus as claimed in claim 1 , wherein the luminance value of ...

Methods and apparatus for driving electro-optic displays

The performance of an electro-optic display, for example, a bistable electro-optic display, can be improved by modifying the frame rate of a base waveform used to drive a transition between gray states. Such modifications permit fine control of gray levels with reduced artifacts. The described methods additionally require less memory to store all of the waveforms needed to achieve good performance of an electro-optic display over a range of temperatures.

MULTI-MODE MULTI-DOMAIN VERTICAL ALIGNMENT LIQUID CRYSTAL DISPLAY AND METHOD THEREOF

A liquid crystal display (LCD) system comprising: an LCD panel having a plurality of pixels arranged in an array having a plurality of columns and a plurality of rows; a sensor configured to detect a position of an observer in relation to the LCD panel; pixel control circuitry configured supply electrical signals to drive the plurality of pixels; and gamma correction circuitry associated with the pixel control circuitry, the gamma correction circuitry configured to implement gamma correction upon the electrical signals that drive the plurality of pixels that is based on a detected position of the observer with relation to the LCD panel. Associated methods are also described. 1. A method of driving a liquid crystal display (LCD) , the LCD including a plurality of pixels arranged in an array having a plurality of columns and a plurality of rows , and a plurality of driving circuits for driving the plurality of pixels , with a driving circuit associated with each of the plurality of pixels , the method comprising:determining whether a first condition is satisfied;when the first condition is satisfied, operating the LCD in a first mode, whereby signals to drive each of the plurality of driving circuits are generated using a first gamma correction function; the plurality of pixels are grouped into adjacent pixel pairs, each pixel pair having a first pixel and a second pixel;', 'the signals to drive the plurality of driving circuits of the first pixel of each pixel pair are generated using a second gamma correction function; and', 'the signals to drive the plurality of driving circuits of the second pixel of each pixel pair are generated using a third gamma correction function,, 'when the first condition is not satisfied, operating the LCD in a second mode, wherebywherein the first gamma correction function, the second gamma correction function, and the third gamma correction function are each defined by different gamma correction curves.2. The method of claim 1 , wherein ...

Source Driver, Driving Circuit and Driving Method for TFT-LCD

The present invention provides a source driver for use in a TFT-LCD, comprising: a data register, a data latch, a digital-to-analog converter and an output buffer. A first loading pulse is provided to the output buffer, such that the output buffer starts to output the gray-scale voltages of odd output ends to corresponding TFT sources in response to a second edge of the first loading pulse from the second level to the first level, which second edge immediately follows the first edge, and a second loading pulse is provided to the output buffer, such that such that the output buffer starts to output the gray-scale voltages of even output ends to corresponding TFT sources in response to a second edge of the second loading pulse from the second level to the first level, which second edge immediately follows the first edge. At least the second edge of the first loading pulse is not synchronous with the second edge of the second loading pulse. A driving circuit and a driving method are further provided. The source driver, the driving circuit and the driving method can alleviate adverse consequences resulting from too large difference between display data of two adjacent rows. 1. A source driver for use in a TFT-LCD , comprising:a data register for registering multiple display data, the multiple display data corresponding to a plurality of pixel units in a row of pixel units of the TFT-LCD;a data latch having a first terminal for receiving a first loading pulse and a second terminal for receiving a second loading pulse, the data latch latching the multiple display data in the data register in response to a first edge of the first loading pulse from a first level to a second level and a first edge of the second loading pulse from a first level to a second level;a digital-to-analog converter for converting the multiple display data latched in the data latch into corresponding multiple gray-scale voltages; andan output buffer comprising a plurality of buffer units, for ...

System and method for controlling led lighting by distributed pwm

The present invention relates to an illumination control method and system for LED lamps, where the system comprises: a receiver module ( 1 ) configured to obtain a number of illumination levels (N) indicative of the light resolution of a LED lamp ( 6 ) and a duty cycle (D) associated with a desired light intensity for a LED lamp ( 6 ), a control module ( 2 ) comprising a control unit ( 7 ) configured to: generate a periodic signal with a period (T) and a duty cycle from the number of illumination levels (N) and the duty cycle (D), generate an illumination control signal (SCi) from the periodic signal for controlling the power supply of at least one LED lamp ( 6 ), and a power supply module ( 3 ) configured to power at least one LED lamp ( 6 ) according to the illumination control signal (SCi).

Display Apparatus and Control Method of Display Apparatus

During displaying a moving image on a liquid crystal panel, when the brightness of the pixel in an image to be displayed is a prescribed setting value or more, the display apparatus performs the overdrive control for changing the brightness of the pixel from the brightness in one previous image to a middle value between the brightness in the one previous image and the brightness to be displayed, and then changing to the brightness to be displayed. The setting value is, for example, a maximum value of a displayable brightness or a value near the maximum value. If the brightness of the pixel in the one previous image is a first threshold value or less, the display apparatus performs the same overdrive control. Even when the brightness of the pixel in the one previous image is misidentified as other values of the first threshold value or less with a minimum displayable value, the same overdrive control as the case in which the brightness of the one previous image is the minimum value is performed.