Liquid crystal display devices

A pair of appropriately oriented 90 DEG twisted nematic cells 6, 7 each incorporating a guest dye and each having internal electrodes 8, 14, 9, 15 that overlap in part are placed between appropriately oriented crossed polarisers 12, 13 to provide a display device that appears black in transmission when unenergised and can be energised to provide one of two alternative legends in black displayed against contrasting backgrounds of different colour. If one of these background colours is white one of the guest dyes is omitted, An appropriately oriented coloured polariser located between the cells may be substituted for a guest dye.

Liquid crystal display device

A liquid crystal display device has a tandem arrangement of two cells. The rear cell is an active silicon matrix backed dyed nematic cell with 180 DEG twist cell affording the possibility of grey scale representations. The front cell is a dyed nematic cell oriented to act as a variable density polarizer to absorb the weakly absorbed plane of the rear cell. Control of this absorption is used to optimize the contrast perception in the rear cell under different ambient lighting conditions.

Device and method for varying the reflectance or transmittance of light

OPTICAL FILTER FOR PROTECTIVE WELDING LENS ASSEMBLIES

OPTICAL FILTER FOR PROTECTIVE WELDING LENS ASSEMBLIES An optical filter for welding protective lens assemblies has two parallel electro-optical cells, at least one of the cells being of the nematic type with admixture of dye molecules with anisotropic light absorption. The filter comprises a filter sheet disposed in the ray path of the cells and allowing transmission within a wave range which is offset with respect to the wave range within which said one cell is transmitting residual light in its absorbing state.

COMPLEMENTARY COLOR LIQUID CRYSTAL DISPLAY

A liquid crystal color device (10) includes at least one pel (14) for affecting light (36) incident thereon to produce output light (38), the pel includes three complementary color subsets (30, 32, 34), each having controllable color filtering capability in the respective complementary colors thereof. The color subsets are arranged in optical additive relation, and the color subsets include complementary color parts (30a, 30b, 32a, 32b, 34a, 34b) which are arranged, respectively, in optical serial/subtractive relation. The color filtering function is carried out using liquid crystal materials With respective pleochroic dyes. A method of parametric color control of a liquid crystal device, formed of plural picture elements, each picture element including plural pairs of complementary color filters, comprising directing light to or through an array of such electrically controllable pairs of complementary color filters, and controlling the filtering characteristics of at least one of such ...

LIGHT-TRANSMITTING DEVICE BASED VARIABLE DICHROIC LIQUID CRYSTAL

ELECTRO-OPTICAL BLOCKING DEVICE DUAL MODE ATTENUATION

LIQUID CRYSTAL COLOR DISPLAY

광 에너지의 통과를 조절하기 위한 2개의 액정 스위칭 층을 포함하는 장치

... 본 발명은, 에너지의 통과를 조절하기 위한 장치에 관한 것이며, 상기 장치는, 잇따라 배열된 2개 이상의 스위칭 층 S(1) 및 S(2)를 포함하는 것을 특징으로 하며, 상기 스위칭 층은 하나 이상의 이색성 화합물을 포함하는 액정 매질을 포함한다.

LIQUID CRYSTAL DISPLAY

Liquid crystal display panel with a color layer having at least two color regions within one pixel and with a liquid crystal layer having two portions of differing bandwidths

A liquid crystal display panel has a liquid crystal layer arranged between a pair of glass plates and a color filter arranged on one of the plates. The color filter has two color regions within one picture element. The liquid crystal layer has first and second liquid crystal layers, each of the layers containing dichroic dyes. Many different colors can be produced by selectively combining the colors of the color filter and the colors of the liquid crystal layers. The first and second liquid crystal layers are arranged in a substantially close relationship with each other thereby to omit any intermediately located glass plate between the first and second liquid crystal layers.

Color filter and display devices including the same

A color filter and display devices using the same are provided, the color filter includes a first electrode and a second electrode spaced apart from each other; and a variable filter layer between the first electrode and the second electrode. The variable filter layer includes a polymer, liquid crystal dispersed in the polymer, and a plurality of color display materials mixed in the liquid crystal.

Flüssigkristallanzeigegerät

FLÜSSIGKRISTALLFARBANZEIGEVORRICHTUNG UND VERFAHREN

Multiple colour eyewear lenses

Active Retroreflector

An active retroreflector 100 comprising a retroreflective layer 102 and a switchable electro-optic absorption layer 104, arranged to cover at least part of the retroreflective layer 102, wherein the switchable electro-optic absorption layer 104 is a guest host liquid crystal layer switchable between a low absorption state wherein incident light is retroreflected and a high absorption state wherein fluorescent dichroic dye particles fluoresce. A polymer dispersed liquid crystal layer (412 fig 4) may also be provided which is switchable between high and low scattering states. The present arrangement allows the visibility of the active retroreflector to be adapted to different lighting conditions.

Liquid crystal devices

Liquid crystal display

LIQUID CRYSTAL COLOR INDICATOR AND PROCEDURE

OPTICAL FILTERS FUER WELDING PROTECTION LENS ARRANGEMENTS.

An improved transmissive or refective liquid crystal display and novel process for its manufacture

OPTICAL FILTER FOR PROTECTIVE WELDING LENS ASSEMBLIES

APPARATUS AND METHOD FOR ADDITIVE/SUBTRACTIVE PIXEL ARRANGEMENT IN COLOR MOSAIC DISPLAYS

A liquid crystal display unit is described in which a first panel of pixel elements is used to control red and green portions of a displayed image using an additive technique while a second panel, having pixels aligned with the first panel pixels, controls the blue portion of the image through subtractive techniques. The resulting display system can provide enhanced brightness, resolution and color characteristics. The display system makes use of the fact that the eye is less sensitive to blue radiation for several visual parameters. As a result of the deceased sensitivity, the second (blue) panel can operate with less stringent requirements.

CLOSURE DEVICE WITH DUAL ELECTRO-OPTICAL TRANSMISSION STATE OPTIMIZES THROUGHOUT THE VISIBLE SPECTRAL BAND

Il est proposé un dispositif d'obturation électro-optique comprenant un couple de cellules optiques superposées. Une première cellule comprend un premier matériau comprenant un cristal liquide cholestétrique hôte, un dopant chiral invité de 1 et 2 % en poids du premier matériau pour que le premier matériau ait un pas d'hélice compris dans la plage 450 nm à 460 nm, ainsi qu'un colorant dichroïque neutre invité. Une seconde cellule comprend un second matériau comprenant un second cristal liquide cholestérique hôte, un second colorant dichroïque neutre invité, et un cristal liquide nématique invité ayant une concentration comprise entre 14 et 20 % en poids du second matériau pour que le second matériau ait un pas d'hélice compris dans la plage 550 nm à 580 nm.

AN IMPROVED TRANSMISSIVE OR REFECTIVE LIQUID CRYSTAL DISPLAY AND NOVEL PROCESS FOR ITS MANUFACTURE

This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture. © KIPO & WIPO 2007 ...

광의 통과를 조절하기 위한 장치

... 본 발명은, 특징적인 구조 요소를 포함하는 액정 혼합물을 포함하는 층을 포함하는 것을 특징으로 하는, 광의 통과를 조절하기 위한 장치에 관한 것이다.

APPARATUS AND METHOD FOR DYNAMICALLY CONTROLLING LIGHT TRANSMISSION

An apparatus for controlling light transmission from an optical input to an optical output can function as a tunable iris or eclipse, or as a privacy window. The iris/eclipse can use a liquid crystal matrix with a dispersion of dichroic particles that absorb light in one orientation and transmit light in another, such that controlling the liquid crystal with an electric field allows control of the dichroic particles. Alternatively, a layer may be used with a light absorbing liquid or powder material that moves with a charged material in response to a variable electric field applied to the layer. Privacy windows use a plurality of liquid crystal microlenses that can be controlled with an electric field to allow an image of an optical input to be obtainable at an optical output when in a first state, or to render the image irretrievable when in a second state.

DEVICE AND METHOD FOR VARYING THE REFLECTANCE OR TRANSMITTANCE OF LIGHT

Device for reflecting light at variable intensity, the device (100) including a variable polarizer (102) for applying a selected polarization to incoming light (110), a reflector (106) and an optical phase shifter (104), located between the variable polarizer and the reflector, wherein the optical phase shifter together with the reflector, shift the relative phase between two linearly polarized components of the incoming light (114) which exits the variable polarizer, from a first direction to a second direction, thereby directing phase shifted light (120) toward the variable polarizer, and wherein the variable polarizer applies the selected polarization to the phase shifted light. An alternative embodiment is a device for transmitting light at variable intensity comprising front and rear variable polarizers. A variable polarizer for use in these devices is also disclosed.

Color liquid crystal display unit

A color liquid crystal display device is composed of first and second liquid crystal display cells aligned over each other, in which each cell includes a pair of color polarizers having respective polarization axes which are oriented at right angles to each other. The color polarizers of each cell contain at least one color which is the complement of the color contained in the other color polarizer. In this way, display contrast and brightness can be enhanced by allowing a higher ratio of picture elements to be utilized for monochromatic displays.

Transmissive or reflective liquid crystal display and novel process for its manufacture

This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.

Liquid crystal display device using stacked layers

The liquid crystal display device comprises a first substrate, a second substrate opposite to the first substrate, a plurality of switching elements formed on a face of the first substrate, which is opposite to the second substrate, a common electrode formed on a face of the second substrate, the face being opposite to the first substrate, a plurality of liquid crystal layers stacked on the second substrate to hold the common electrode between the layers and the second substrate, and arranged between the first and second substrates a plurality of projection electrodes selectively formed on the liquid crystal layers and a plurality of pixel electrode each formed on a corresponding one of the liquid crystal layers. The pixel electrodes respectively formed between a corresponding couple of the liquid crystal layers are connected to a corresponding one of the switching elements formed on the first substrate through one or several of the protrusion electrode/electrodes. The several protrusion ...

Transparent display device

A transparent display device is provided with a first liquid crystal layer having a first electrode, a second electrode, a plurality of first liquid crystal molecules, and a plurality of first chiral molecules disposed between the first electrode and the second electrode; and a second liquid crystal layer having a third electrode, a fourth electrode, a plurality of second liquid crystal molecules, a plurality of second chiral molecules, and a dichroic dye disposed between the third electrode and the fourth electrode. The first liquid crystal molecules and the second liquid crystal molecules both have positive anisotropies, and the dichroic dye has a visible absorption wavelength ranged from 400 to 780 nm.

Selectively erasable electronic writing tablet

An electronic writing tablet is composed of one or more layers on which an image is formed and can be selectively erased. One aspect of the invention is a bistable cholesteric writing tablet on which an image is formed while applying writing pressure. The image can be fully erased and new images written on the tablet. In addition, one can selectively erase any or all portions of the written image to restore the original background color. Another aspect of the invention is a multi-color stacked writing tablet in which a color of an image is selected (usually by applying a suitable voltage) while applying writing pressure using an instrument such as an untethered stylus on the surface of the tablet. The writing tablet includes at least two or three stacked layers of bistable cholesteric liquid crystal material. Selected colors can be additively mixed to achieve intermediate colors as desired. The image can be fully erased and new images written on the tablet. In addition, one can selectively ...

High reflectivity liquid crystal display cell

A multi layer liquid crystal display cell 100 comprises compartments 114 and 116 separated by a thin transparent dielectric membrane 106 which is supported between substrates 102 and 104 by spacers 108 and 110. Guest-host type liquid crystal mixtures having dielectric anisotropy are contained in compartments 114 and 116. An electric field may be applied across the two compartments by way of conducting electrodes 118 and 120. The electro-optic characteristics of the mixture in compartment 114 differ from those of the mixture in compartment 116 in such a way that the liquid crystal molecules in the former compartment will switch orientation at a first value of the applied electric field and those of the latter compartment will switch at a second (different) value of the applied electric field (fig. 5). A third compartment may be added to the cell.

Liquid crystal display

A liquid crystal display comprises, in order from the viewing side, a first glass substrate 10 carrying an electrode 12, a dichroic liquid crystal layer 16 provided with suitable alignment layers 14, 18, a retarding layer 20, a reflector 24 and a second glass substrate 28 carrying an electrode 26. In use, in one of its states, the dichroic liquid crystal layer 16 absorbs a component of the light incident thereon, the transmitted component being plane polarized. The polarized light is incident upon the retarding layer 20 which converts the plane polarized light to circularly polarized light, this light being reflected and converted back to plane polarized light polarized in a direction perpendicular to the original plane of polarization on returning through the retarding layer 20. Such polarized light is absorbed by the dichroic dye, no light being transmitted by the cell towards the viewer. In another state, the dichroic dye does not absorb, and hence does not polarize, the light, the cell ...

Electro-optical switching element and electro-optical display

The instant invention relates electro-optical switching elements and displays comprising them. In particular, it relates to electro-optical switching elements comprising cholesteric liquid crystal layers, in particular, with both-handed twist senses, which selectively reflect visible light and/or light emitting moieties which are embedded in the cholesteric liquid crystal layers or other layers and an light controlling element that controls the amount of transmitted and/or reflected light. The displays give bright images under either bright or dark conditions with small power consumption. They are particularly suitable for e-paper applications and/or digital signage applications.

Liquid crystal structure

LIQUID CRYSTAL ARRANGEMENTS

FLUESSIGKRISTRALL DEVICES.

COLORED LIQUID CRYSTAL DISPLAY UNIT

POLYCHROME SCREEN

DISPLAY SYSTEM WITH DUAL-CASCADED CELLS

CLOSURE DEVICE WITH DUAL ELECTRO-OPTICAL TRANSMISSION STATE OPTIMIZES THROUGHOUT THE VISIBLE SPECTRAL BAND

DISPOSITIF DE MODULATION DE LA LUMIERE D'ECLAIREMENT D'UN ECRAN D'AFFICHAGE ELECTRO-OPTIQUE

LE DISPOSITIF DE L'INVENTION COMPORTE PRINCIPALEMENT UN ECRAN A CRISTAL LIQUIDE 1 ECLAIRE PAR UNE SOURCE LUMINEUSE 2. ENTRE LA SOURCE 2 ET L'ECRAN 1 EST PLACE UN DISPOSITIF DE MODULATION 3 COMMANDE ELECTRIQUEMENT. SELON L'INTENSITE D'ECLAIREMENT DESIREE, ON ADAPTE LA COMMANDE ELECTRIQUE DU DISPOSITIF DE MODULATION. LE DISPOSITIF DE MODULATION PEUT COMPORTER ESSENTIELLEMENT UNE CELLULE A CRISTAL LIQUIDE.

Apparatus and method for additive/subtractive pixel arrangement in color mosaic displays

ADJUSTABLE HEAT INSULATION WINDOWS

An adjustable heat insulation window is provided with a first transparent substrate, a second transparent substrate, and a heat insulation layer disposed between the first transparent substrate and the second transparent substrate. The heat insulation layer is provided with a liquid crystal composition having a plurality of liquid crystal molecules, a dichroic dye, and an ionic salt. The liquid crystal molecules have negative anisotropies, and the dichroic dye has a visible absorption wavelength ranged from 400 to 780 nm. 1. An adjustable heat insulation window , comprising:a first transparent substrate comprising a first electrode;a second transparent substrate comprising a second electrode; anda heat insulation layer disposed between the first transparent substrate and the second transparent substrate, wherein the heat insulation layer comprises a liquid crystal composition;wherein the liquid crystal composition comprises a plurality of liquid crystal molecules, a dichroic dye and an ionic salt, the liquid crystal molecules have negative anisotropies, and the dichroic dye has a visible absorption wavelength ranged from 400 to 780 nm.2. The adjustable heat insulation window according to claim 1 , wherein the liquid crystal molecules are nematic.3. The adjustable heat insulation window according to claim 1 , wherein the ionic salt is water soluble.4. The adjustable heat insulation window according to claim 1 , wherein the ionic salt is NaCl claim 1 , CaSO claim 1 , (NH)SO claim 1 , NaCO claim 1 , NaHCO claim 1 , KNO claim 1 , or tetrabutylammonium tetrafluoroborate (TBATFB).5. The adjustable heat insulation window according to claim 1 , wherein the first electrode and the second electrode are configured to provide a voltage to lower the transmittance of the heat insulation layer and allow the heat insulation layer to absorb a part of visible light.6. The adjustable heat insulation window according to claim 5 , wherein the voltage is less than or equal to 10 V claim ...

Liquid crystal display

High reflectivity bistable liquid crystal display

A bistable liquid crystal display cell 100 comprises at least two compartments 114, 116 separated by thin transparent membranes 112. Each compartment has a grating located on one of its surfaces. A first compartment 114 contains a first liquid crystal mixture, and a second compartment 116 contains a second liquid crystal mixture. The mixtures have a first alignment, as in fig.5, in which the molecules in each compartment are aligned parallel to the plane of the display cell but orthogonal to each other, and a second alignment, as in fig. 6, in which the molecules are aligned normal to the plane of the display cell.

Electro-optical switching element and electro-optical display

COLORED LIQUID CRYSTAL DISPLAY MECHANISM WITH ELECTRICALLY ADJUSTABLE ONE COLOR FILTERS

LIQUID CRYSTAL DEVICE

LIQUID CRYSTAL COLOR DISPLAY AND METHOD

A liquid crystal color display (20) provides a transmitted light output of one or more colors, black, and/or white, as a function of incident light and controlled energization or not of respective optically serially positioned liquid crystal color layers (2, 3, 4) and/or multicolor composite liquid crystal color layer(s) in the display. Plural optically serially arrangedvolumes (21) of operationally nematic liquid crystal material (25) having different optical characteristics, e.g. being dyed with different pleochroic dyes (28), may be selectively aligned or not with respect to an electric field to determine optical output of the device in a subtractive color mode. Exemplary colors of pleochroic dye include yellow, cyan and magenta, and black dye may be used to control saturation or hue. Non-pleochroic dye also may be used in one or more layers of the liquid crystal color display to filter or to color light transmitted therethrough thereby to cooperate with the pleochroic dye to provide ...

PROJECTOR USING LIQUID CRYSTAL CELLS

... : The present invention relates to a projector having an arrangement of polarizers and liquid crystal cells aligned on an axis of light. The order of the polarizers and cells is a first color polarizer colored in red, a first twisted nematic liquid crystal cell, a second twisted nematic liquid crystal cell, a second color polarizer colored in green, a third twisted nematic liquid, a neutral polarizer and a Guest-Host type colored in blue. Since, according to this, a polarizer having inferior color characteristics can be replaced by a Guest-Host type liquid crystal cell, the excitation purity and the scope of color reproduction are improved. Further, since the mixture of color is additive, the brightness of the reproduced color is also much improved.

AN IMPROVED TRANSMISSIVE OR REFECTIVE LIQUID CRYSTAL DISPLAY AND NOVEL PROCESS FOR ITS MANUFACTURE

This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.

Improved transmissive and reflective liquid crystal display and method thereof

本发明涉及液晶(LC)显示器，这种显示器包括多个具有明确定义的形状、尺寸、和纵横比的盒，这些盒最好用含有二向色性染料的液晶组分填充。本发明还涉及制造上述液晶显示器的新颖方法。

VARIABLE LIGHT TRANSMISSION DEVICE-BASED DICHROIC LIQUID CRYSTAL

Il est proposé un dispositif à transmission de lumière variable (100), comprenant un ensemble d'au moins deux filtres optiques (110, 120) superposés comprenant chacun un couple de cellules optiques (111, 112, 121, 122) superposées, chaque cellule optique comprenant une couche d'un mélange (115, 116, 125, 126) comprenant un matériau hôte à base de cristal liquide et au moins un matériau invité dichroïque.

DEVICES DISPLAY HAS Liquid crystals

LIQUID CRYSTAL DISPLAY DEVICE

Color filter and display device employing the same

컬러필터 및 이를 채용한 디스플레이 장치가 개시된다. 개시된 컬러필터는 서로 이격 배치된 제1전극 및 제2전극; 상기 제1전극과 제2전극 사이에 형성된 것으로, 폴리머, 상기 폴리머 내에 분산된 다수의 액정 방울 및 상기 액정 방울들 내부에 혼합된 색상발현물질로 이루어진 가변 필터층;을 포함한다. A color filter and a display device employing the same are disclosed. The disclosed color filter comprises a first electrode and a second electrode spaced apart from each other; And a variable filter layer formed between the first electrode and the second electrode, the variable filter layer comprising a polymer, a plurality of liquid crystal droplets dispersed in the polymer, and a color developing material mixed inside the liquid crystal droplets.

DEVICE CAPABLE OF SWITCHING BETWEEN IMAGE DISPLAY STATUS AND MIRROR STATUS, AND EQUIPMENT PROVIDED THEREWITH

Transflective displays

A transflective display (10) includes a backlight (14) and a display stack (12, 12'). The display stack (10) includes a first electro-optic layer (24) configured to modulate light of a first waveband and a second electro-optic layer (26) configured to modulate light of a second waveband that is different from the first waveband. A mirror (30) is positioned between the first and second electro-optic layers (24, 26) such that the first electro-optic layer (24) is positioned adjacent to a first surface (S1M) of the mirror (30) and has a surface (S1) that is configured to face an external light source (22), and the second electro-optic layer (26) is positioned adjacent to a second surface (S2M) of the mirror (30) and has a surface (S2) that is configured to face the backlight (14). The mirror (30) is also configured to partially reflect and partially transmit wavelengths in the first waveband and to at least partially transmit wavelengths in the second waveband.

Light control device and display device using the same

A light control device and a display device using the same. The light control device includes a polymer networked liquid crystal (PNLC) or polymer dispersed liquid crystal (PDLC) display switchable between a scattering state and a first display state, and a guest-host (G-H) liquid crystal display (LCD) switchable between a transparent state and a second display state. A light source of the G-H LCD is disposed at a side of the PNLC or PDLC display and aligned to its liquid crystal layer. In a first operational mode, the PNLC or PDLC display is switched to the first display state, and the G-H LCD is switched to the transparent state and becomes transparent. In a second operational mode, the G-H LCD is switched to the second display state, and the PNLC or PDLC display is switched to the scattering state to function as a light guide layer for the G-H LCD.

LIQUID CRYSTAL DISPLAY

A liquid crystal display cell comprises first (1) and second (2) opposed cell walls enclosing a liquid crystal material (6) having an anisotropic absorber therein, and a microstructure (4) on an inner surface of the first cell wall (1). The microstructure (4) is formed from a material which has a refractive index that is more closely matched to the ordinary refractive index (n0) of the liquid crystal material than to the extraordinary refractive index (ne).

LIQUID CRYSTAL BASED LIGHT CONTROL ELEMENT

A light control element (100) is disclosed having a first chamber (110) encapsulating a first liquid crystal based light absorbing material (112; 114) being switchable from a first orientation in which said material (112; 114) predominantly absorbs light having a first polarization direction to a second orientation in which said material (112; 114) is substantially transparent and that further has a second chamber (120) encapsulating a second liquid crystal based light absorbing material (122; 124) being switchable from a first further orientation in which said material (122; 124) predominantly absorbs light having a polarization direction substantially perpendicular to the first polarization direction to a second further orientation in which said material (122; 124) is substantially transparent. A plurality of electrodes is present for switching the orientations of the first and second light absorbing materials. Consequently, a polarization independent light control element (100) is obtained ...

Light modulation device

A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, wherein the active liquid crystal layer is capable of switching between a vertical orientation state and a twisting orientation state upon application of a voltage, each of the first and second polymer film substrates has an in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.

Liquid crystal display device

This invention is a liquid crystal display device including a reflecting plate formed above a substrate, and a liquid crystal cell formed by alternately, repeatedly stacking a liquid crystal layer and a transparent electrode layer at least once on the reflecting plate, wherein the liquid crystal layer includes a thin film constituted by a microcapsulated guest-host liquid crystal containing dye molecules and liquid crystal molecules.

Multi-colored liquid crystal displays

A transmissive liquid crystal display actuatable to provide each of a plurality of different colors utilizes at least one parallel-nematic or twisted-nematic liquid crystal cell each having a dichroic dye dissolved therein for absorbing light each of a different color. The cells are sequentially arranged between a pair of polarizing elements have their axes of polarization perpendicular to one another. The polarizing element nearest an observer contains a dichroic dye for absorbing an additional wavelength (color) of visible light and may be selectively actuatable. By energizing different combinations of the cells from their quiescent to active conditions, different combinations of visible light wavelengths are absorbed to change the color of light transmitted through the display. Maximum-color displays, providing up to 2N different colors (wherein N is the number of activatable liquid crystal elements) utilize one or two twisted-nematic liquid cells closest to the dichroic exit polarizer ...

OPTOELECTRONIC ELEMENT

Provided is an optoelectronic element including a first substrate, a first electrode on the first substrate, a first lens pattern disposed on the first electrode and including a liquid crystal and a black dye molecule, a second lens pattern disposed on the first lens pattern, and a second electrode on the second lens pattern, wherein the black dye molecule includes about 1 to 4 azo groups and about 2 to 5 aromatic cyclic compounds.

Light modulation device

A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, wherein the active liquid crystal layer is capable of switching between a first orientation state and a second orientation state different from the first orientation state under an applied voltage, the first and second polymer film substrates have an in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.

POLYCHROME SCREEN

The invention concerns a polychrome screen comprising alternating areas (40A, 40B) of first (A) and second (B) dichroic display materials sandwiched between first and second insulating walls (31, 33) and alternating areas (42B, 42C) of third (B) and fourth (C) dichroic display materials sandwiched between the second and third insulating walls (33, 35), the second and third display materials being advantageously identical, each area of the first material is superimposed both on an area of the third material and on part of an area of the fourth material and each area of the second material is superimposed on the other part of an area of the fourth material. The invention is applicable in particular to liquid crystal polychrome display cells such as nematic or ferroelectric liquid crystals, and uses equally well a multiplexed or non-multiplexed display mode.

LIQUID CRYSTAL DISPLAY ELEMENT

PURPOSE: To improve the contrast by forming a two-layer cell structure by a supertwist birefringence effect (SBE) layer and a guest-host layer, and sticking a polarizing plate at a specific angle to the outside of the SBE layer. CONSTITUTION: A cell of a two-layer structure is formed by superposing glass substrates 11, 12 and 13 provided with a transparent electrode at a minute interval. A chiral agent is enclosed in an SBE layer 16 of one cell, and a dichroic pigment is enclosed in a guest-host layer 17 of the other cell. Also, a liquid crystal of the SBE layer 16 becomes a molecular arrangement having an angle of torsion of 200W270° between both the substrates 12, 13 by a rubbing processing. Moreover, a polarizing plate 18 is stuck to the outside of the substrate 13 so that an included angle of a transmission axis of the polarizing plate 18 and a short axis of a liquid crystal molecular of the surface side of the guest-host layer 17 of the intermediate substrate 12 becomes '0'W60°, and ...

Light control element for outputting polarised light over different angular ranges.

A light controlling element 15 comprises vertical linear polarisers 16 positioned between transparent substrates 17, and serves to output light having a first polarisation state in a first angular range and light having a second, different polarisation state in a second, greater angular range. The linear polarisers 16 may be horizontal (Figure 5), and the system may be incorporated in a display having a display panel such as an LCD, switchable half wave plate and backlight (Figure 6). The light controller may be used in a three dimensional, autostereoscopic or dual view display. Also disclosed are manufacturing methods adhering stacked polarising sheets together, removing selected polariser regions and providing polarising material or light transmitting substrates in recesses in the element.

SYSTEM AND METHOD FOR VARYING THE REFLECTANCE OR TRANSMITTANCE OF LIGHT

Electrically switchable holographic display

LIQUID CRYSTAL COLOR DISPLAY AND METHOD

A liquid crystal color display provides a transmitted light output that is of one or more colors, black, and/or white, as a function of the color of the incident light input and controlled energization or not of respective optically serially positioned liquid crystal color layers and/or multicolor composite liquid crystal color layer(s) in the display. In one case the display includes a plurality of liquid crystal color layers, each being dyed a differentrespective color, and apparatus for selectively applying a prescribed input, such as an electric field, to a respective layer or layers or to a portion or portions thereof. Each liquid crystal layer includes plural volumes of operationally nematic liquid crystal material in a containment medium that tends to distort the natural liquid crystal structure in the absence of a prescribed input, such as an electric field, and pleochroic dye is included or mixed with the liquid crystal material in each layer. Each layer is differently colored ...

COMPOSITION AND PROCESS FOR THE SEALING OF MICROCUPS IN ROLL-TO-ROLL DISPLAY MANUFACTURING

The invention relates to a novel sealing composition for the manufacture of an electrophoretic or liquid crystal display, and a sealing process using the composition. The composition allows electrophoretic or liquid crystal cells to be seamlessly sealed and the sealing layer free of any defects.

OPTICAL FILTER FOR PROTECTIVE WELDING LENS ASSEMBLIES

HIGH REFLECTIVITY LIQUID CRYSTAL DISPLAY CELL

LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD OF THE SAME

DISPLAY APPARATUS FOR EFFICIENT POWER

PURPOSE: A display device is provided to obtain the bright display of high contrast and low dissipation. CONSTITUTION: The display device(10) includes the first switching layer(111), the second switching layer(112), and the third switching layer(113), the first colored layer(311), the second chromatic layer(312), the third chromatic layer(313), and the intermediate layer(210). The first switching layer can switch the first coloring conditions and light transmission. The second switching layer is formed in the same in-plane as the first switching layer. The second switching layer can be switched into light transmission and coloring condition state. The first colored layer is laminated on the first switching layer. The intermediate layer is formed between the third switching layer and the third chromatic layers, the first switching layer and the first colored layer, and the second switching layer and the second chromatic layers. COPYRIGHT KIPO 2010 ...

광 유입 조절 장치

... 본원은, 트위스트된 네마틱 액정 매질 및 이색성 화합물을 포함하는 특정 설계의 스위치가능한 층을 포함하는, 실내로의 광 유입을 조절하는 장치에 관한 것이다.

조광 장치

... 곡면을 갖는 광투과 플레이트와, 조광 셀과, 상기 광투과 플레이트의 상기 곡면과 상기 조광 셀 사이에 배치되고, 상기 광투과 플레이트의 상기 곡면에 상기 조광 셀의 일방측을 접착하는 광학 투명 점착 필름을 구비하는 조광 장치를 제공한다.

Reflectance-variable mirror

The present application relates to a reflectance-variable mirror using a liquid crystal cell. The reflectance-variable mirror of the present application may comprise a first liquid crystal cell including a guest host liquid crystal layer, a first reflective polarizing film, a second liquid crystal cell including a retardation-variable liquid crystal layer, a second reflective polarizing film and an absorbing plate sequentially. The reflectance-variable mirror of the present application can realize excellent reflectance-variable characteristics by lowering the reflectance in an antireflection mode.

AN IMPROVED TRANSMISSIVE OR REFECTIVE LIQUID CRYSTAL DISPLAY AND NOVEL PROCESS FOR ITS MANUFACTURE

This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.

SELECTIVELY ERASABLE ELECTRONIC WRITING TABLET

An electronic writing tablet is composed of one or more layers on which an image is formed and can be selectively erased. One aspect of the invention is a bistable cholesteric writing tablet on which an image is formed while applying writing pressure. The image can be fully erased and new images written on the tablet. In addition, one can selectively erase any or all portions of the written image to restore the original background color. Another aspect of the invention is a multi-color stacked writing tablet in which a color of an image is selected (usually by applying a suitable voltage) while applying writing pressure using an instrument such as an untethered stylus on the surface of the tablet. The writing tablet includes at least two or three stacked layers of bistable cholesteric liquid crystal material. Selected colors can be additively mixed to achieve intermediate colors as desired. The image can be fully erased and new images written on the tablet. In addition, one can selectively ...

Electronically dimmable optical device

An electronically dimmable optical device, including, in sequence, an active absorbing polarizer; a first static reflective polarizer; an active polarization rotator; and a second static reflective polarizer; configured so that the reflectivity and/or transmissivity of the device can be controlled (increased or decreased) by application of a voltage across the active absorbing polarizer and/or the active polarization rotator. One or more polarization levels can be selected by controlling the voltage at the active absorptive polarizer such that setting the active absorptive polarizer to a selected polarization level determines the brightness of an image produced by the device.

Light Modulation Device

A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, wherein the active liquid crystal layer is capable of switching between a vertical orientation state and a twisting orientation state upon application of a voltage, each of the first and second polymer film substrates has an in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.

Electronic devices having multiple alignment layers

A method for forming an electronic device including two stacked liquid crystal cells is disclosed. A first liquid crystal cell including two substrates is provided. A second liquid crystal cell is formed by disposing another substrate to one of the substrates of the first liquid crystal cell. Subsequently, a cutting step is performed to cut off unnecessary portions of the substrates of the first liquid crystal cell and the second liquid crystal cell. Before bonding the another substrate, a pre-cutting step is performed to form at least a pre-cutting mark on the substrate on which the another substrate is bonded in order to facilitate removal of unnecessary portions of the substrates.

Color liquid crystal display unit

COLOR LIQUID CRYSTAL DISPLAY DEVICE

PURPOSE: To obtain a thin color liquid crystal display device which makes a bright display and is superior in display contrast and low power consumption by selecting either one of two color polarizers in a 1st liquid crystal layer and absorbing or transmitting light by a liquid crystal layer. CONSTITUTION: Color polarizers 6, 7, and 8 of blue, red and green are laminated on a glass substrate 2 and their axes of absorption are directed as shown by an arrow A. Color polarizers 9, 10, and 11 of red, green, and blue are laminated as 2nd layers on the color polarizers 6, 7, and 8 and their axes of absorption are directed as shown by an arrow B. Further, color polarizers 12, 13, and 14 of yellow, cyan, and magenta are laminated on a glass substrate 2 and their axes of absorption are directed as shown by an arrow C. Then color polarizers 15, 16, and 17 are laminated as 2nd layers on the color polarizers 12, 13, and 14 and their axes of absorption are directed as shown by an arrow E. Twisted nematic ...

Optical filter arrangement

Known optical filter arrangements possess invariable optical properties. The invention creates an optical filter arrangement in which the optical properties can be controlled. The optical filter arrangement consists of a colour-selective translucent (light-transmitting) liquid crystal cell having at least two transparent electrodes which enclose liquid crystal molecules, preferably in the nematic phase. Connected to the electrodes is an electronic control circuit, by means of which voltages of adjustable level can be applied to the electrodes. In a preferred embodiment, additional dye molecules are dissolved inside the liquid crystal molecules.

Modulierte Beleuchtungsvorrichtung für ein elektro-optisches Display.

Farbflüssigkristall-Anzeigevorrichtung.

Active Retroreflector

LIQUID CRYSTAL DISPLAY DEVICE

DISPLAY DEVICE

Transmissive or reflective liquid crystal display and process for its manufacture

Cholesteric reflector

A cholesteric reflector ( 100 ) includes a substrate ( 110 ) and a first cholesteric layer ( 120 ) which is disposed over the substrate ( 110 ) and reflects a first polarization of light within a design waveband. A second cholesteric layer ( 140 ) is disposed over the first cholesteric layer ( 120 ) and reflects a second polarization of light within the design waveband.

Display Device

A display device is provided which has high visibility by including a display element and a polarizer between a pair of substrates. The display element includes a liquid crystal element and/or a light-emitting element. The display device includes an element layer between a pair of substrates, and an organic layer serving as a polarizer or both the organic layer and a retardation layer between the element layer and the second substrate. The organic layer includes a dichroic dye in which the major axes of molecules are oriented in one predetermined direction. 1. A display device comprising:an element layer over a first substrate;a retardation layer over the element layer;a first organic layer and a second organic layer over the retardation layer; anda second substrate over the first organic layer and the second organic layer,wherein the element layer comprises a liquid crystal element and a light-emitting element,wherein the first organic layer comprises a material with a light-transmitting property,wherein the second organic layer comprises a dichroic dye in which major axes of molecules are oriented in one predetermined direction,wherein the first organic layer and the light-emitting element overlap with each other, andwherein the second organic layer and the liquid crystal element overlap with each other.2. The display device according to claim 1 , wherein the element layer further comprises a first driving element electrically connected to the liquid crystal element claim 1 , and a second driving element electrically connected to the light-emitting element.3. The display device according to claim 1 ,wherein the element layer further comprises a first driving element electrically connected to the liquid crystal element, and a second driving element electrically connected to the light-emitting element,wherein the second organic layer and the first driving element overlap with each other, andwherein the second organic layer and the second driving element overlap with ...

BISTABLE LIQUID CRYSTAL LIGHT-MODULATING DEVICE

A bistable liquid crystal spatial light modulating (SLM) device (SLM) device utilizes the homeotropic and bubble domain texture change of a cholesteric liquid crystal that is responsive to external stimuli, such as electric voltage, light and pressure. The SLM device is configured to be switched between the two stable textures of the bubble domain texture or the fingerprint texture. In addition, the SLM device may be switched between transparent and light-scattering states by the application of an electric field, light irradiation or physical/mechanical pressure. The light transmission state and the light-scattering states of the present invention are also stable in time at zero voltage, and are reversible upon the application of an external field at a different voltage, frequency or wavelength of light.

Light Controlling Apparatus and Transparent Display Including the Same

A light controlling apparatus includes a first electrode on a first substrate; a first alignment film on the first electrode; a second electrode on a second substrate facing the first substrate; a second alignment film on the second electrode; and a guest-host liquid crystal layer having cholesteric liquid crystals and dichroic dyes between the first and second alignment films. The first and second electrodes provide a vertical electric field, and at least one of the first and second electrodes provides a horizontal electric field. The cholesteric liquid crystals have a homeotropic state when an electric field in a first direction is applied to the guest-host liquid crystal layer to realize a transparent mode. The cholesteric liquid crystals have a focal conic state when an electric field in a second direction is applied to realize a light shielding mode. A same state is maintained when no electric field is applied. 1. A light controlling apparatus , comprising:a first electrode on a first substrate;a first alignment film on the first electrode;a second electrode on a second substrate facing the first substrate;a second alignment film on the second electrode; anda guest-host liquid crystal layer between the first alignment film and the second alignment film, the guest-host liquid crystal layer including cholesteric liquid crystals and dichroic dyes,wherein the first and second electrodes provide a vertical electric field,at least one of the first and second electrodes provides a horizontal electric field,the cholesteric liquid crystals have a homeotropic state when an electric field in a first direction is applied to the guest-host liquid crystal layer, whereby a transparent mode transmitting incident light is realized,the cholesteric liquid crystals have a focal conic state when an electric field in a second direction is applied to the guest-host liquid crystal layer, whereby a light shielding mode shielding incident light is realized, andthe cholesteric liquid ...

Transmittance-Variable Device

A transmittance-variable device is disclosed herein. In some embodiments, the transmittance-variable device includes a first guest host layer, a second guest host layer, and a phase difference element disposed between the first and second guest host layers, wherein each of the first and second guest host layers comprise a liquid crystal host and a dichroic dye guest, and the liquid crystal hosts are capable of being horizontally oriented such that their optical axes are horizontal to each other. The transmittance-variable device can switch between a clear state and a black state, can exhibit high transmittance in the clear state and a high shielding rate in the black state, and can exhibit a high contrast ratio even at the inclination angle. Such a transmittance-variable device can be used in architectural or automotive materials, or eyewear such as goggles for augmented reality experience or sports, sunglasses or helmets. 1. A transmittance-variable device , comprising:a first guest host layer;a second guest host layer; anda phase difference element disposed between the first and second guest host layers,wherein each of the first and second guest host layers comprise a liquid crystal host and a dichroic dye guest, and the liquid crystal hosts are capable of being horizontally oriented such that their optical axes are horizontal to each other.2. The transmittance-variable device according to claim 1 , wherein the device is capable of switching between a clear state and a black state depending on application of a voltage.3. The transmittance-variable device according to claim 2 , wherein a ratio (Tc/Tb) of transmittance (Tc) of incident light through the device in the clear state and transmittance (Tb) of the incident light through the device in the black state is 7.5 or more claim 2 , wherein the incident light forming an angle of 20 degrees with the normal of the surface of the guest host layer.4. The transmittance-variable device according to claim 1 , wherein the ...

TRANSPARENT DISPLAY DEVICE

Disclosed is a transparent display device in which a light shield rate is not lowered by partition walls in a light shield mode, and moreover, a light transmittance is not lowered in a transmissive mode. The transparent display device includes a transparent display panel including a plurality of transmissive areas transmitting incident light and a plurality of emissive areas emitting light, and a light control device disposed on a rear surface of the transparent display panel. The light control device is configured to be driven in a transmissive mode where the incident light is transmitted and a light shield mode where the incident light is blocked. 1. A transparent display device comprising:a transparent display panel including a plurality of transmissive areas transmitting incident light and a plurality of emissive areas emitting light; anda light control device disposed on a rear surface of the transparent display panel, the light control device configured to be driven in a transmissive mode where the incident light is transmitted and a light shield mode where the incident light is blocked,whereinthe light control device comprises:a first base film and a second base film facing each other;a plurality of liquid crystal cells provided between the first base film and the second base film; anda plurality of partition walls maintaining respective cell gaps of the plurality of liquid crystal cells, andthe plurality of partition walls are disposed at respective positions corresponding to the plurality of emissive areas.2. The transparent display device of claim 1 , wherein a width of each of the plurality of partition walls in a short-side direction is equal to or less than a width of each of the plurality of emissive areas in a short-side direction.3. The transparent display device of claim 1 , wherein the plurality of partition walls are successively arranged in parallel with the plurality of emissive areas.4. The transparent display device of claim 1 , wherein the ...

DEVICE FOR REGULATING THE PASSAGE OF ENERGY

The present application relates to a device for regulating the passage of energy which is characterised in that it comprises at least two switching layers S(1) and S(2) arranged one behind the other, where the switching layers comprise a liquid-crystalline medium comprising at least one dichroic compound. 1. Device for regulating the passage of energy through a surface , where the device comprises at least two switching layers S(1) and S(2) , each of which comprises a liquid-crystalline medium comprising one or more dichroic compounds , and where the device comprises orientation layers O(1) , O(2) , O(3) and O(4) , where the said switching layers and orientation layers are present in the device in mutually parallel planes in the sequence O(1) , S(1) , O(2) , O(3) , S(2) , O(4) ,where an orientation axis OA(1)* of the molecules of the liquid-crystalline medium of S(1) which are adjacent to O(2) is present in at least one switching state of the device, and an orientation axis OA(2)* of the molecules of the liquid-crystalline medium of S(2) which are adjacent to O(3) is present, and orientation axes OA(1)* and OA(2)* are not parallel to one another and are parallel to the plane of the switching layers.2. Device according to claim 1 , characterised in that it is installed in an opening of a building claim 1 , a container claim 1 , a vehicle or another substantially closed space.3. Device according to claim 1 , characterised in that it is electrically switchable.4. Device according to claim 1 , characterised in that it has four electrodes claim 1 , one of which is installed on each side of each of the two switching layers.5. Device according to claim 1 , characterised in that the switching layers are separately electrically switchable.6. Device according to claim 1 , characterised in that the molecules of the liquid-crystalline medium are aligned vertically to the plane of the switching layers by application of an electric field.7. Device according to claim 1 , ...

LIGHT CONTROL DEVICE, TRANSPARENT DISPLAY DEVICE INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE SAME

Discussed are a light control device, a transparent display device including the same, and a method of manufacturing the same, which lower a light transmittance in a light shield mode. The light control device may include a first substrate and a second substrate facing each other, a first electrode disposed on one surface of the first substrate facing the second substrate, a second electrode disposed on one surface of the second substrate facing the first substrate, a plurality of partition walls disposed on one surface of the first electrode facing the second substrate to maintain a gap between the first substrate and the second substrate, a first alignment layer disposed on the one surface of the first electrode and the plurality of partition walls, and a second alignment layer disposed on one surface of the second electrode facing the first substrate. 1. A light control device comprising:a first substrate and a second substrate facing each other;a first electrode on one surface of the first substrate facing the second substrate;a second electrode on one surface of the second substrate facing the first substrate;a plurality of partition walls on one surface of the first electrode facing the second substrate, the plurality of partition walls providing a gap between the first substrate and the second substrate; anda plurality of liquid crystal cells each including liquid crystal, dichroic dyes, and ion materials.2. The light control device of claim 1 , further comprising:a first alignment layer disposed on the one surface of the first electrode and the plurality of partition walls; anda second alignment layer disposed on one surface of the second electrode facing the first substrate,wherein:the plurality of liquid crystal cells are disposed between the first alignment layer and the second alignment layer, andwhen a voltage is not applied to the first electrode and the second electrode, a long-axis direction of each of the liquid crystal and the dichroic dyes is ...

Light Modulation Element

A light modulation element that can vary between a bright transparent mode and a dark scattering mode is provided. The light modulation element has a first light modulation layer and a second light modulation layer comprising nematic liquid crystals and a dichroic dye in a scattering mode when a voltage is applied. The first light modulation layer and the second light modulation layer are disposed to overlap each other. The light modulation element has an improved contrast ratio and haze-variable characteristics, without precipitation of dichroic dyes and an increase in power consumption.

Light Controlling Device, Transparent Display Device Including the Same, and Method for Fabricating the Same

Embodiments relate to transparent display apparatus including a transparent display panel. The transparent display panel includes a plurality of transmissive areas transmitting incident light and a plurality of emissive areas emitting light and a light control device disposed on one surface of the transparent display panel to execute a transmissive mode, where incident light is transmitted, and a light shield mode where incident light is blocked. The light control device includes a first substrate and a second substrate facing each other, a liquid crystal cell provided between the first substrate and the second substrate, and a partition wall maintaining a cell gap of the liquid crystal cell. The partition wall has a honeycomb structure, and a plurality of column spacers are disposed between partition walls. 1. A light control device , comprising:a first substrate;a second substrate parallel to the first substrate;a first electrode on a surface of the first substrate facing the second substrate;a second electrode on a surface of the second substrate facing the first substrate;partitioning walls between the first electrode and the second electrode, the partitioning walls configured to partition space between the first electrode and the second electrode;a plurality of column spacers in the partitioned space and separated from the partitioning walls, each of the plurality of column spacer between the first electrode and the second electrode to maintain a distance between the first electrode and the second electrode; andliquid crystal in the partitioned space between the partitioning walls and the plurality of the column spacers.2. The light control device of claim 1 , wherein each of the plurality of column spacers is pillar shaped with a circular cross-section across a plane parallel to the surfaces of the first and second substrates claim 1 , the plurality of column spacers separated from each other.3. The light control device of claim 1 , wherein a set of the ...

OPTOELECTRONIC ELEMENT

Provided is an optoelectronic element including a first substrate, a first electrode on the first substrate, a first lens pattern disposed on the first electrode and including a liquid crystal and a black dye molecule, a second lens pattern disposed on the first lens pattern, and a second electrode on the second lens pattern, wherein the black dye molecule includes about 1 to 4 azo groups and about 2 to 5 aromatic cyclic compounds. 1. An optoelectronic element comprising:a first substrate;a first electrode on the first substrate;a first lens pattern disposed on the first electrode and including a liquid crystal and a black dye molecule;a second lens pattern disposed on the first lens pattern; anda second electrode on the second lens pattern, wherein the black dye molecule includes about 1 to 4 azo groups and about 2 to 5 aromatic cyclic compounds.2. The optoelectronic element of claim 1 , wherein the black dye content is about 0.05 to 10 wt % of the liquid crystal content.3. The optoelectronic element of claim 1 , further comprising:a first alignment film interposed between the first electrode and the first lens pattern; anda second alignment film interposed between the first lens pattern and the second lens pattern.4. The optoelectronic element of claim 1 , wherein the second electrode is interposed between the first lens pattern and the second lens pattern.5. The optoelectronic element of claim 1 , wherein the second lens pattern includes an insulating polymer and an electrical conductor claim 1 , the electrical conductor including one of a carbon nanotube (CNT) claim 1 , a silver nanowire claim 1 , a graphene claim 1 , and/or a conductive polymer.6. The optoelectronic element of claim 5 , wherein a content of the electrical conductor range from about 0.01 to 10 wt % of a content of the second lens pattern.7. The optoelectronic element of claim 1 , further comprising:an element part disposed on the first electrode and including a plurality of pixels; andcolor ...

DISPLAY DEVICE AND METHOD OF DRIVING THE SAME

Provided are a display device and a method of driving the same. The display device includes a polymer layer including dichroic dyes and a liquid crystal, which is not mixed or reacted with the polymer layer, dispersed in the polymer layer. The polymer and the liquid crystal having different refractive indices from each other are used to provide a display device which is reflective and transmissible. 1. A display device comprising:first and second electrodes configured to face each other and spaced apart from each other;a polymer layer configured to fill between the first and second electrodes and include dichroic dyes; anda liquid crystal immiscible with materials in the polymer layer.2. The display device of claim 1 , wherein claim 1 , with respect to light incident on the display device claim 1 , a refractive index of the polymer layer is different from a refractive index of the liquid crystal.3. The display device of claim 1 , wherein the polymer layer comprises a reactive monomer or oligomer claim 1 , and a radical initiator.4. The display device of claim 3 , wherein the reactive monomer or oligomer comprises at least one selected from the group consisting of triethylopropane triacrylate (TMPTA) claim 3 , tri(propylene glycol) diacrylate (TPGDA) claim 3 , penthaerithritol triacrylate (PETA) claim 3 , trimethylolpropane ethoxylate triacrylate (TMPEOTA) claim 3 , methyl methacrylate (MMA) claim 3 , methacrylate (MA) claim 3 , tri(propylene glycol) glycerolate diacrylate (TPGDA) claim 3 , vinylacrylate (VA) claim 3 , ethylene glycol dimethacrylate (EGDA) claim 3 , epoxy acrylate monomer or oligomer claim 3 , 1 claim 3 ,6-hexandiol diacrylate (HAD) claim 3 , styrene (ST) claim 3 , divinyl benzene (DVB) claim 3 , acrylonitrile (AN) claim 3 , vinylidene chloride (VDC) claim 3 , vinylbenzyl chloride (VBC) claim 3 , vinyl stearate (VS) claim 3 , and vinyl propionate (VP).5. The display device of claim 3 , wherein the radical initiator comprises at least one of a ...

THIADIAZOLOQUINOXALINE DERIVATIVES

The present invention relates to thiadiazoloquinoxaline derivatives of the formula I, 2. Compounds according to claim 1 , characterised in that claim 1 , if r and s are identical claim 1 , at least one of the groups{'sup': 11', '12, 'Aand A, or'}{'sup': 11', '12, 'Rand R, or'}{'sup': 21', '22, 'Aand A, or'}{'sup': 11', '12, 'Zand Z, or'}{'sup': 21', '22, 'Zand Z, or'}{'sup': 11', '12, 'Xand X'}{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'is different from one another, where the parameters have the meanings indicated in .'}3. Compounds according to claim 1 , characterised in that claim 1 , in formula I claim 1 , r denotes 0 claim 1 , 1 or 2 and s denotes r+1.4. Compounds according to claim 1 , characterised in that W denotes —S—.5. Compounds according to claim 1 , characterised in that Xand Xeach claim 1 , independently of one another claim 1 , denote H claim 1 , CH claim 1 , CH claim 1 , F claim 1 , Cl claim 1 , CF claim 1 , OCF claim 1 , CN or together denote 1 claim 1 ,4-butylene claim 1 , 1 claim 1 ,3-hexafluoropropylidene or 1 claim 1 ,4-octafluorobutylidene.6. Compounds according to claim 1 , characterised in that A claim 1 , A claim 1 , A claim 1 , Aare selected on each occurrence claim 1 , identically or differently claim 1 , from groups claim 1 , optionally substituted by radicals L claim 1 , derived from the parent substances benzene claim 1 , fluorene claim 1 , naphthalene claim 1 , pyridine claim 1 , pyrimidine claim 1 , thiophene claim 1 , thiazole claim 1 , dihydrothienodioxin claim 1 , benzothiophene claim 1 , dibenzothiophene claim 1 , benzodithiophene claim 1 , cyclopentadithiophene claim 1 , thienothiophene claim 1 , indenothiophene claim 1 , furan claim 1 , benzofuran claim 1 , dibenzofuran and quinoline claim 1 , where L is selected from the groups F claim 1 , Cl claim 1 , CN claim 1 , NO claim 1 , CH claim 1 , CH claim 1 , OCH claim 1 , OCH claim 1 , COCH claim 1 , COCH claim 1 , COOCH claim 1 , COOCH claim 1 , CF claim 1 , OCF claim 1 , ...

TRANSPARENT DISPLAY DEVICE

A transparent display device is provided with a first liquid crystal layer having a first electrode, a second electrode, a plurality of first liquid crystal molecules, and a plurality of first chiral molecules disposed between the first electrode and the second electrode; and a second liquid crystal layer having a third electrode, a fourth electrode, a plurality of second liquid crystal molecules, a plurality of second chiral molecules, and a dichroic dye disposed between the third electrode and the fourth electrode. The first liquid crystal molecules and the second liquid crystal molecules both have positive anisotropies, and the dichroic dye has a visible absorption wavelength ranged from 400 to 780 nm. 1. A transparent display device , comprising:a first liquid crystal layer comprising a first electrode, a second electrode, a plurality of first liquid crystal molecules, and a plurality of first chiral molecules, wherein the first liquid crystal molecules and the first chiral molecules are disposed between the first electrode and the second electrode; anda second liquid crystal layer disposed on one side of the first liquid crystal layer, wherein the second liquid crystal layer comprises a third electrode, a fourth electrode, a plurality of second liquid crystal molecules, a plurality of second chiral molecules, and a dichroic dye, and the second liquid crystal molecules, the second chiral molecules, and the dichroic dye are disposed between the third electrode and the fourth electrode;wherein the first chiral molecules and the first liquid crystal molecules form a plurality of first cholesteric liquid crystals; the second chiral molecules and the second liquid crystal molecules form a plurality of second cholesteric liquid crystals;the first liquid crystal molecules and the second liquid crystal molecules both have positive anisotropies, the dichroic dye has a visible absorption wavelength ranged between 400 to 780 nm.3. The transparent display device according ...

MANUFACTURE METHOD OF POLARIZATION AND ALIGNMENT FUNCTION INTEGRATION FILM AND LIQUID CRYSTAL DISPLAY PANEL

The present invention provides a manufacture method of a polarization and alignment function integration film and a liquid crystal display panel comprising the polarization and alignment function integration film. The manufactured polarization and alignment function integration film manufactured by the manufactured method has polarization property and alignment function. As the polarization and alignment function integration film is applied in the liquid crystal display panel, it can replace the polarizer and the alignment film in the liquid crystal display panel according to prior art for decreasing the type and the amount of the optical films and saving one polarizer alignment process. Significantly, the production process is simplified and the production cost is saved to gain the benefits of cost reduction. Besides, the polarization and alignment function integration film is particularly applicable for the liquid crystal display panel structure which needs to locate the polarizer inside. 1. A manufacture method of a polarization and alignment function integration film , comprising steps of:{'b': '1', 'step , forming a mixed dye thin film containing dichroic dye and alignment material on a substrate;'}{'b': '2', 'step , implementing polarization treatment to the mixed dye thin film, and a process of the polarization treatment is to generate orientation under functions of stretching orientation, rubbing, molecular self-assembly or electrical field force.'}2. The manufacture method of the polarization and alignment function integration film according to claim 1 , wherein the alignment material is normal alignment material or light alignment material.32. The manufacture method of the polarization and alignment function integration film according to claim 2 , wherein as the alignment material is normal alignment material claim 2 , after the polarization treatment in the step claim 2 , the dichroic dye in the mixed dye thin film is aligned according to a way claim 2 , ...

LIGHT MODULATING DEVICE

A light modulating device including: a light transmissive plate having a curved surface; a light modulating cell; and an optically transparent adhesive film which is disposed between the curved surface of the light transmissive plate and the light modulating cell and attaches one side of the light modulating cell to the curved surface of the light transmissive plate. 1. A light modulating device comprising:a light transmissive plate which includes one or plurality of glass plates and has a curved surface;a light modulating cell which is capable of turning into a light shielding state and a light transmitting state; andan optically transparent adhesive film which is disposed between the curved surface of the light transmissive plate and the light modulating cell and attaches one side of the light modulating cell to the curved surface of the light transmissive plate, wherein:the curved surface is a three-dimensional curved surface,the light transmissive plate is arranged only on one side of the light modulating cell, a first laminated body which includes a first resin substrate, a first electrode layer and a first alignment layer;', 'a second laminated body which includes a second resin substrate and a second alignment layer;', 'a liquid crystal layer of a guest-host type which is disposed between the first laminated body and the second laminated body and contains a dichroic dye;', 'a sealing member which defines a liquid crystal space of the liquid crystal layer between the first alignment film and the second alignment film; and', 'a plurality of spacers which define a thickness of the liquid crystal layer,, 'the light modulating cell hasthe first alignment body has an extension portion which is extended to an outside of the sealing member defining the liquid crystal space of the liquid crystal layer and is attached to the curved surface of the light transmissive plate, anda length in a width direction of the sealing member defining the liquid crystal space of the ...

LIGHT CONTROL DEVICE AND TRANSPARENT DISPLAY DEVICE INCLUDING THE SAME

A light control device and a transparent display device including the same are discussed. In the light control device, a sealant uniformly spreads in a bonding process. The light control device includes a first substrate and a second substrate facing each other, a first electrode over one surface of the first substrate facing the second substrate, a second electrode over one surface of the second substrate facing the first substrate, a liquid crystal layer between the first electrode and the second electrode, a sealant sealing a plurality of liquid crystal cells between the first substrate and the second substrate, a first dam structure in a boundary between the sealant and the liquid crystal, and a second dam structure surrounding an outer side of the sealant. The liquid crystal layer transmits or blocks light, and the first dam structure surrounds an inner side of the sealant contacting the liquid crystal cells. 1. A light control device comprising:a first substrate and a second substrate facing each other;a first electrode over one surface of the first substrate facing the second substrate;a second electrode over one surface of the second substrate facing the first substrate;a liquid crystal layer between the first electrode and the second electrode, the liquid crystal layer transmitting or blocking light;a sealant sealing a plurality of liquid crystal cells between the first substrate and the second substrate;a first dam structure in a boundary between the sealant and the liquid crystal cells, the first dam structure surrounding an inner side of the sealant contacting the liquid crystal cells; anda second dam structure surrounding an outer side of the sealant.2. The light control device of claim 1 , further comprising:a partition wall over one surface of the first electrode facing the second substrate, the partition wall maintaining a gap between the first substrate and the second substrate.3. The light control device of claim 2 , wherein the partition wall has ...

LIGHT MODULATING DEVICE

A light modulating device including: a light transmissive plate having a curved surface; a light modulating cell; and an optically transparent adhesive film which is disposed between the curved surface of the light transmissive plate and the light modulating cell and attaches one side of the light modulating cell to the curved surface of the light transmissive plate. 136.-. (canceled)37. A light modulating device comprising:a light transmissive plate having a curved surface, the light transmissive plate including a glass plate; and a first laminated body including a first resin substrate;', 'a second laminated body including a second resin substrate;', 'a liquid crystal layer containing a dichroic dye and being provided between the first laminated body and the second laminated body;', 'a sealing member which is provided between the first laminated body and the second laminated body, defines a space for formation of the liquid crystal layer, the sealing member being disposed in a frame shape surrounding the liquid crystal layer;', 'a polarizing plate provided at only one of: (1) a first side of the liquid crystal layer on which the first laminated body is provided; or (2) a second side of the liquid crystal layer on which the second laminated body is provided., 'a light modulating cell, the light transmissive plate having a higher rigidity than a rigidity of the light modulating cell, the light modulating cell comprising38. A light modulating device comprising:a light transmissive plate having a curved surface, the light transmissive plate including a glass plate; and a first laminated body including a first resin substrate;', 'a second laminated body including a second resin substrate;', 'a liquid crystal layer containing a dichroic dye and being provided between the first laminated body and the second laminated body; and', 'a sealing member which is provided between the first laminated body and the second laminated body, defines a space for formation of the liquid ...

SWITCHABLE GRATING AND APPLICATION THEREOF

A switchable grating and an application thereof are provided. The switchable grating includes two electrically conductive substrates and a switchable liquid crystal grating layer, which is disposed between the two electrically conductive substrates. When an electric field is applied to a presumption area of the switchable liquid crystal grating layer by the two electrically conductive substrates, the electric field could shift an orientation of a cholesteric liquid crystal molecule of the presumption area. When the electric field is removed, the cholesteric liquid crystal molecule still maintains the aforementioned orientation, thus decreasing energy consumption. When a display device manufactured by the aforementioned switchable grating switches an image to a 2D image or a 3D image, the display device has lower energy consumption. 1. A switchable grating , comprising:two electrically conductive substrates, wherein the two electrically conductive substrates are disposed to each other oppositely and parallelly; anda switchable liquid crystal grating layer, disposed between the two electrically conductive substrates, wherein the switchable liquid crystal grating layer includes a cholesteric liquid crystal molecule and a dichroic black dye, and the switchable liquid crystal grating layer is divided into first areas and second areas, andwherein when a first electric field is applied to the first areas by the two electrically conductive substrates, the cholesteric liquid crystal molecule of the first areas is shifted to a first orientation; or when the first electric field is removed, the cholesteric liquid crystal molecule of the first areas is kept in the first orientation, thereby allowing a light to pass through the first areas and the second areas.2. The switchable grating of claim 1 , wherein when a second electric field is applied to the first areas by the two electrically conductive substrates claim 1 , the cholesteric liquid crystal molecule of the first areas ...

REARVIEW MIRROR ASSEMBLIES WITH ANISOTROPIC POLYMER LAMINATES

Anisotropic film laminates for use in image-preserving reflectors such as rearview automotive mirror assemblies, and related methods of fabrication. A film may comprise an anisotropic layer such as a light-polarizing layer and other functional layers. The film having controlled water content is heated under omnidirectional pressure and vacuum to a temperature substantially equal to or above a lower limit of a glass-transition temperature range of the film so as to be laminated to a substrate. The laminate is configured as part of a mirror structure so as to increase contrast of light produced by a light source positioned behind the mirror structure and transmitted through the mirror structure towards a viewer. The mirror structure is devoid of any extended distortion and is characterized by SW and LW values less than 3, more preferably less than 2, and most preferably less than 1. 1. A switchable mirror system (SMS) for use in a vehicular rearview assembly equipped with a light source transmitting light from within the rearview assembly through said SMS to a field-of-view (FOV) outside the assembly , the SMS comprising:at least two electro-optic (EO) cells defined by at least three sequentially disposed spaced-apart glass substrates, a first EO-cell corresponding to an outside portion of the rearview assembly and a second EO-cell disposed between the first EO-cell and the light source,wherein the first EO-cell is adapted to be a switchable linear absorptive polarizer that attenuates light reflected from the second EO-cell, and does not substantially attenuate light transmitted from the light source through the second EO-cell,wherein said SMS has a reflectance value that is gradually variable in response to changes in voltages applied to the first EO-cell, and as measured in said FOV in ambient light, and{'sup': '2', 'wherein thicknesses of said at least three substrates are chosen to provide for a net weight of said SMS per unit area of less than 2.0 grams per cm.'} ...

COLOR LIQUID CRYSTAL DISPLAY PANEL

The present invention provides a color liquid crystal display panel, which includes: a plurality of mutually parallel layers of liquid crystal cells () and bonding members () bonding the plurality of layers of liquid crystal cells (). Each of the liquid crystal cells () includes a thin-film transistor substrate (), a package substrate (), and a dye-liquid crystal layer () sealed between the thin-film transistor substrate () and the package substrate (). The dye-liquid crystal layer () includes a liquid crystal material and a dichroic dye. The dichroic dye of each of the liquid crystal cells () absorbs light of a predetermined range of wavelength. The plurality of layers of liquid crystal cells () respectively absorbs lights of different ranges of wavelength. The present invention includes a dichroic dye combined in a liquid crystal material in order to use the dichroic dye to absorb light of some colors thereby achieving color displaying without using a conventionally used polarizer and manufacture of a color filter substrate, so that the manufacture cost of and the requirement for backlighting brightness by the liquid crystal display panel can both be reduced. 1. A color liquid crystal display panel , comprising: a plurality of mutually parallel layers of liquid crystal cell and bonding members bonding the plurality of layers of liquid crystal cells , each of the liquid crystal cells comprising a thin-film transistor substrate , a package substrate , and a dye-liquid crystal layer sealed between the thin-film transistor substrate and the package substrate , the dye-liquid crystal layer comprising a liquid crystal material and a dichroic dye , the dichroic dye of each of the liquid crystal cells absorbing a light of a predetermined range of wavelength , the plurality of layers of liquid crystal cells respectively absorbing lights of different ranges of wavelength.2. The color liquid crystal display panel as claimed in claim 1 , wherein the liquid crystal material is ...

DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

A display device includes a substrate on which a thin film transistor is positioned, a pixel electrode positioned on the thin film transistor and connected to the thin film transistor, a roof layer separated from the pixel electrode via a microcavity interposed therebetween, and a liquid crystal layer positioned in the microcavity and including a liquid crystal material and a dichroic dye. 1. A display device comprising:a substrate;a thin film transistor which is positioned on the substrate;a pixel electrode positioned on the thin film transistor and connected to the thin film transistor;a roof layer separated from the pixel electrode via a microcavity interposed therebetween; anda liquid crystal layer positioned in the microcavity and including a liquid crystal material and a dichroic dye.2. The display device of claim 1 , whereinthe dichroic dye is at a concentration of about 0.1 wt % to about 15 wt % with respect to a total weight of the liquid crystal layer.3. The display device of claim 1 , whereinthe dichroic dye is a material which absorbs a wavelength range corresponding to one of cyan, magenta, and yellow.4. The display device of claim 3 , whereinthe dichroic dye includes at least one of azo dyes, anthraquinone dyes, perylene dyes, merocyanine dyes, azomethine dyes, phthaloperylene dyes, indigo dyes, dioxadine dyes, polythiophene dyes, and phenoxazine dyes.5. The display device of claim 4 , whereininjection holes are respectively defined at facing edges of the microcavity.6. The display device of claim 5 , whereinone of the injection holes of the microcavity is substantially blocked so that a material providing the liquid crystal layer is not injectable therein.7. The display device of claim 1 , whereina plurality of microcavities is disposed in a matrix form,the liquid crystal layer including a first dichroic dye configured to display a color is positioned in microcavities of the plurality of microcavities adjacent in a column direction, andthe liquid ...

REFLECTIVE TYPE NAKED-EYE 3D DISPLAY APPARATUS AND MANUFACTURING METHOD THEREOF

A reflective type naked-eye 3D display apparatus and manufacturing method thereof are disclosed and the reflective type naked-eye 3D display apparatus comprises: a liquid crystal display panel (). The reflective type naked-eye 3D display apparatus further comprises: a polarizing filter structure () disposed on the liquid crystal display panel (), the polarizing filter structure () may comprise different regions where linear polarizing lights having different polarizing states are transmitted; a reflective layer structure () disposed under the liquid crystal display panel (), the reflective layer structure () may comprise different regions where linear polarizing light of a preset direction is reflected or transmitted. The reflective type naked-eye 3D display apparatus can achieve a naked-eye type 3D displaying on the reflective type liquid crystal display panel. 1. A reflective type naked-eye 3D display apparatus , comprising:a liquid crystal display panel;wherein the reflective naked-eye 3D display apparatus further comprises:a polarizing filter structure disposed on the liquid crystal display panel, wherein the polarizing filter structure comprises different regions where linear polarizing lights having different polarizing states are transmitted;a reflective layer structure disposed under the liquid crystal display panel, wherein the reflective layer structure comprises different regions where linear polarizing light of a preset direction is reflected or transmitted.2. The reflective type naked-eye 3D display apparatus according to claim 1 , wherein the reflective naked-eye 3D display apparatus further comprises:a light absorbing layer disposed under the reflective layer structure.3. The reflective type naked-eye 3D display apparatus according to claim 1 , wherein the light absorbing layer comprises black organic material claim 1 , black inorganic material or black metal.4. The reflective type naked-eye 3D display apparatus according to claim 1 , wherein the ...

DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

A display device includes: a substrate including a plurality of pixels formed in row and column directions; a thin film transistor disposed on the substrate, and a pixel electrode connected to the thin film transistor; a first liquid crystal layer filled inside a microcavity formed on the pixel electrode; a plurality of roof layers formed to be separated from the pixel electrode with the microcavity and an injection hole therebetween; and an overcoat formed on the roof layer to cover the injection hole and encapsulate the microcavity. The first liquid crystal layer includes a liquid crystal molecule and a color material. It is possible to simplify a structure of the display device and reduce the number of manufacturing processes thereof by adding a color material to a liquid crystal material of the display device manufactured with a single substrate such that a color filter may be removed. 1. A display device , comprising:a substrate including a plurality of pixels formed in row and column directions;a thin film transistor disposed on the substrate, and a pixel electrode connected to the thin film transistor;a first liquid crystal layer filled inside a microcavity formed on the pixel electrode;a plurality of roof layers formed to be separated from the pixel electrode with the microcavity and an injection hole therebetween; andan overcoat formed on the roof layer to cover the injection hole and encapsulate the microcavity,wherein the first liquid crystal layer includes a liquid crystal molecule and a color material.2. The display device of claim 1 , whereinthe color material includes a red, green, or blue pigment.3. The display device of claim 2 , whereinfirst liquid crystal layers that are adjacent in the row direction include different color pigments, andfirst liquid crystal layers that are adjacent in the column direction include the same color pigment.4. The display device of claim 2 , whereinthe pigment includes an inorganic or organic pigment.5. The display ...

Light adjusting glass

The present disclosure provides a light adjusting glass, which includes at least one liquid crystal cell, each liquid crystal cell including two substrates disposed opposite to each other, and a liquid crystal layer interposed between the two substrates; where each of the substrates includes a base, an electrode layer disposed on a side of the base proximal to the liquid crystal layer; at least one electrode layer of at least one liquid crystal cell includes a plurality of electrode blocks which are disposed at intervals, and the electrode blocks are respectively controlled by separate driving circuits.

HIGH CONTRAST ELECTRO-OPTIC LIQUID CRYSTAL CAMERA IRIS PROVIDING ANGLE INDEPENDENT TRANSMISSION FOR UNIFORM GRAY SHADES

A high-contrast electro-optic liquid crystal camera iris () provides angle independent transmission for uniform gray shades. The liquid crystal iris comprises a combination of first and second liquid crystal devices () arranged in optical series and positioned between optical polarizers (). The director field () of the second liquid crystal device is a mirror image of the director field () of the first liquid crystal device, and the first and second liquid crystal devices are placed together so that the azimuthal directions () of the surface-contacting directors () are in parallel alignment at the adjoining or confronting surfaces of the substrates () of the first and second liquid crystal devices. The liquid crystal iris provides, therefore, less angular variation of intermediate transmittances compared with that provided by prior art liquid crystal irises. 1. A high-contrast electro-optic liquid crystal camera iris providing angle independent transmission of incident light for uniform gray shades , comprising:first and second light polarizing filters;a first liquid crystal device including a spaced-apart pair of first electrode structures and a second liquid crystal device including a spaced-apart pair of second electrode structures, the first and second liquid crystal devices including liquid crystal material mixed with a dye to improve achromatic performance over a range of f-stop settings of the iris, and the first and second liquid crystal devices positioned between the first and second light polarizing filters and arranged in optical series so that a surface of one of the first electrode structures adjoins or confronts a surface of one of the second electrode structures to form an interface between the first and second liquid crystal devices, the interface characterized by substantially no selective polarization state blocking of incident light propagating from one to the other of the adjoining or confronting surfaces of the first and second electrode ...

Display panel and a display device

A liquid crystal display panel includes a TFT substrate; a backlight system configured to emit light beams in a first color; a color film substrate having at least a first subpixel, a second subpixel, and a third subpixel; a liquid crystal layer; and a polarization system. The first subpixel is configured to let the light beams in the first color pass through and to emit the light beams in the first color. The second subpixel includes a plurality of first quantum dots and a plurality of second quantum dots and is configured to emit light beams in at least a second color based on the light beams in the first color. The third subpixel includes a plurality of third quantum dots and a plurality of fourth quantum dots and is configured to emit light beams in at least a fourth color based on the light beams in the first color.

Reflectance-Variable Mirror

A reflectance-variable mirror using a liquid crystal cell is disclosed herein. In an embodiment, the reflectance-variable mirror may comprise a first liquid crystal cell including a guest host liquid crystal layer, a first reflective polarizing film, a second liquid crystal cell including a retardation-variable liquid crystal layer, a second reflective polarizing film and an absorbing plate sequentially. The reflectance-variable mirror can realize excellent reflectance-variable characteristics by lowering the reflectance in an antireflection mode. 1. A reflectance-variable mirror sequentially comprising:a first liquid crystal cell having a guest host liquid crystal layer, wherein the guest host liquid crystal layer including liquid crystals and anisotropic dyes,a first reflective polarizing film having a first reflection axis formed in one direction,a second liquid crystal cell having a retardation-variable liquid crystal layer, wherein the retardation-variable liquid crystal layer is capable of switching between a phase difference mode and a non-phase difference mode, wherein, in the phase difference mode, a vibration direction of linearly polarized light is rotated by 90 degrees when passing through the retardation-variable liquid crystal layer,a second reflective polarizing film having a second reflection axis parallel to the first reflection axis andan absorbing plate.2. The reflectance-variable mirror according to claim 1 ,wherein the guest host liquid crystal layer is capable of switching between a vertically oriented state and a horizontally oriented state when a voltage is applied.3. The reflectance-variable mirror according to claim 1 ,wherein the first liquid crystal cell further comprises first and second alignment films disposed on opposing sides of the guest host liquid crystal layer.4. The reflectance-variable mirror according to claim 1 ,wherein the first liquid crystal cell further comprises first and second transparent electrode substrates disposed ...

COLOR LIQUID CRYSTAL DISPLAY PANEL AND MANUFACTURING METHOD THEREOF

The present invention provides a color liquid crystal display panel and a manufacturing method thereof, in which red, green, and blue sub-pixels are formed by means of a black matrix barrier and dye-doped liquid crystal layers that contain dichroic dyes so that the manufacturing process is reduced, the structure is simple, and the cost is low. In addition, there is no need to manufacture a conventional color filter substrate and there is no need to include a conventionally used polarizer thereby simplifying the manufacturing process of a liquid crystal display panel, lowering down the manufacturing cost of the liquid crystal display panel, reducing the required backlighting brightness, and enhancing light transmittal and optic efficiency. 1. A color liquid crystal display panel , comprising: a first substrate , a second substrate laminated to the first substrate , a plurality of sub-pixel areas formed on the first substrate , dye-doped liquid crystal layers arranged in the sub-pixel areas , and a sealant frame arranged along a circumferential edge of the first substrate to hermetically bond the first and second substrates together , the dye-doped liquid crystal layers each comprising a liquid crystal material , a dichroic dye , and a chiral dopant , the dye-doped liquid crystal layers each absorbing a light of a specific wavelength range according to type of the dichroic dye contained therein whereby the sub-pixel areas respectively absorb lights of different wavelength ranges , the first substrate comprising a black matrix barrier formed thereon , the black matrix barrier comprising a plurality of blocking walls , each of the sub-pixel areas being surrounded by four sequentially connected ones of the blocking walls , the second substrate having a surface facing the first substrate and set in tight engagement with the black matrix barrier so as to hermetically seal the dye-doped liquid crystal layers of the sub-pixel areas in the sub-pixel areas respectively.2. The ...

PROJECTION SCREEN AND PROJECTION DISPLAY APPARATUS

A projection screen according to an embodiment of the present disclosure includes a display member and a light-controlling layer stacked on the display member. The light-controlling layer includes a pair of conductive layers disposed to oppose each other, a liquid crystal layer provided between the pair of conductive layers, the liquid crystal layer including a liquid crystal and a dichroic pigment, and a photoconductive layer provided between one of the pair of conductive layers and the liquid crystal layer, and configured to have an application region whose resistance varies in accordance with application of light having a first wavelength. 1. A projection screen comprising:a display member; anda light-controlling layer stacked on the display member,the light-controlling layer includinga pair of conductive layers disposed to oppose each other,a liquid crystal layer provided between the pair of conductive layers, the liquid crystal layer including a liquid crystal and a dichroic pigment, anda photoconductive layer provided between one of the pair of conductive layers and the liquid crystal layer, and configured to have an application region whose resistance varies in accordance with application of light having a first wavelength.2. The projection screen according to claim 1 , wherein the light having the first wavelength is light having a wavelength different from a wavelength of light that configures an image.3. The projection screen according to claim 1 , wherein the light having the first wavelength is light having a wavelength ranging from 350 nm to 420 nm.4. The projection screen according to claim 1 , wherein the light having the first wavelength is light having a wavelength ranging from 700 nm to 2.5 μm.5. The projection screen according to claim 1 , wherein the light-controlling layer has reflectance or transmittance that varies in accordance with the application of the light having the first wavelength.6. The projection screen according to claim 1 , ...

DEVICE FOR REGULATING THE ENTRY OF LIGHT

The application relates to a device for regulating the entry of light into a room, which comprises a switchable layer of specific design comprising a twisted nematic liquid-crystalline medium and a dichroic compound. 1. Device for regulating the entry of light into a room ,comprising a switchable layer S comprising a liquid-crystalline medium which comprises at least one dichroic compound, {'br': None, 'i': d<', 'n, '2 μm/Δ'}, 'where the following applies to the thickness d of layer S and the optical anisotropy Δn of the liquid-crystalline medium of layer Sand where the molecules of the liquid-crystalline medium of layer S are in a twisted nematic state in the switching state of the device without an applied electrical voltage or in the switching state of the device with an applied electrical voltage.2. Device according to claim 1 , characterised in that the following applies to the thickness d of layer S and the optical anisotropy Δn of the liquid-crystalline medium of layer S:{'br': None, 'i': d<', 'n, '0.9 μm/Δ'}{'br': None, 'and'}{'br': None, 'i': d>', 'n., '0.2 μm/Δ'}312. Device according to claim 1 , characterised in that precisely one orientation layer claim 1 , called O claim 1 , is adjacent to one side of the switchable layer S claim 1 , and precisely one other orientation layer claim 1 , called O claim 1 , is adjacent to the opposite side of the switchable layer S.412. Device according to claim 3 , characterised in that orientation layers O and O are designed in such a way that they each effect orientation axes of the molecules of the liquid-crystalline medium with different alignments in the adjacent region of layer S.512. Device according to claim 3 , characterised in that the rubbing directions of orientation layers O and O include an angle of 30 to 270°.612. Device according to claim 3 , characterised in that orientation layers O and O effect a homogeneous arrangement of the molecules of the liquid-crystalline medium of layer S adjacent to the ...

ELECTRO-OPTIC GUEST-HOST LIQUID CRYSTAL VARIABLE TRANSMISSION FILTER WITH WIDE VIEWING ANGLE

A variable transmission filter combines in optical series first and second guest-host liquid crystal devices arranged such that one of them is rotated 180° about its normal axis with respect to the other one. The reverse arrangement of the liquid crystal directors of the first and second guest-host liquid crystal devices improves the viewing angle range of the variable transmission filter but, without compensation, introduces a diminution of contrast ratio. A polarization state-changing device positioned between the first and second guest-host liquid crystal devices changes the polarization states of light exiting the first guest-host_liquid crystal device such that transmittance of light in first and second orthogonal polarization states incident on the first guest-host liquid crystal device responds to electric fields applied to the first and second liquid crystal devices and thereby counteracts the diminution of contrast ratio while maintaining the improved viewing angle range. 1. An electro-optic guest-host liquid crystal variable transmission filter with wide viewing angle , comprising:a first guest-host liquid crystal device including a spaced-apart pair of first electrode structures having interior surfaces and a second guest-host liquid crystal device including a spaced-apart pair of second electrode structures having interior surfaces, the first and second guest-host liquid crystal devices arranged in optical series and being quasi-homeotropically oriented electrically controlled birefringence (ECB) devices containing liquid crystal material with negative dielectric anisotropy;spaced-apart first alignment surfaces formed on the interior surfaces of the pair of first electrode structures of the first guest-host liquid crystal device;first liquid crystal directors confined between the first electrode structures, the first liquid crystal directors forming a first director field and including first surface-contacting directors that contact each of the first ...

OPTICAL ELEMENT

The present application relates to an optical element. The exemplary optical element may have a variable transmittance by whether an external signal is applied or not. Also, since the optical element may apply the external signal by using a composite layer having a low transmittance to light in an infrared region, the optical element may block heat, and save energy. Such an optical element may be usefully employed in various optical devices, for example, a sunroof. 1. An optical element , comprising:a polarizing layer;a liquid crystal layer formed on the polarizing layer and including a liquid crystal compound and an anisotropic dye; anda composite layer adjacent to the liquid crystal layer, including a first oxide layer, a metal layer and a second oxide layer, which are sequentially formed, and disposed in order that an alignment direction of the liquid crystal compound of the liquid crystal layer is changed by a signal applied by the composite layer.2. The element according to claim 1 , wherein claim 1 , in an initial state claim 1 , the liquid crystal layer is present in an aligned state such that an optical axis of the liquid crystal layer has a tilt angle of 0 to 90 degree to a plane of the liquid crystal layer.3. The element according to claim 1 , wherein claim 1 , in an initial state claim 1 , the liquid crystal layer is present in an aligned state such that an optical axis of the liquid crystal layer has an angle of 0 to 90 degrees to a direction of an absorption axis of a polarizing plate.4. The element according to claim 1 , wherein the liquid crystal compound and the anisotropic dye are present in the liquid crystal layer in order that alignment is switched by the application of an external signal.5. The element according to claim 1 , further comprising:an alignment layer adjacent to the liquid crystal layer.6. The element according to claim 1 , wherein the liquid crystal layer is disposed to switch between a transmission mode in which a transmittance in ...

SMART WINDOW HAVING DIMMING FUNCTION

A smart window having a dimming function may include transparent substrates opposing each other; an electrode formed internally of the transparent substrate; and a first liquid crystal cell device and a second liquid crystal cell device with a liquid crystal layer located between the electrodes, respectively, wherein the first liquid crystal cell device and the second liquid crystal cell device form the liquid crystal layer, respectively, to have a different absorption wavelength band and are sequentially deposited. 1. A smart window having a dimming function , the window comprising:transparent substrates opposing each other;electrodes formed internally of the transparent substrates; anda first liquid crystal cell device and a second liquid crystal cell device with a liquid crystal layer located between the electrodes, respectively,wherein the first liquid crystal cell device and the second liquid crystal cell device form the liquid crystal layer, respectively, to have a different absorption wavelength band, and are sequentially deposited.2. The smart window having the dimming function of claim 1 , further including an adhesive member located between the respective liquid crystal layer and the electrodes.3. The smart window having the dimming function of claim 1 , wherein the respective liquid crystal layer includes a spacer therein.4. The smart window having the dimming function of claim 1 , wherein light transmittance of each wavelength in the respective liquid crystal cell device is controlled through a power source portion connected to the electrodes of the respective liquid crystal cell device.5. The smart window having the dimming function of claim 4 , wherein a first liquid crystal layer of the first liquid crystal cell device is configured to absorb a red wavelength band according to a voltage variation of the power source portion.6. The smart window having the dimming function of claim 4 , wherein a second liquid crystal layer of the second liquid crystal ...

DEVICE FOR REGULATING THE PASSAGE OF LIGHT

The present application relates to a device for regulating the passage of light which is characterised in that it comprises a layer comprising a liquid-crystalline mixture containing a characteristic structural element. 2. Device according to claim 1 , characterised in that X is selected on each occurrence claim 1 , identically or differently claim 1 , from F and —CN.3. Device according to claim 1 , characterised in that W is equal to —CN.4. Device according to claim 1 , characterised in that U is selected on each occurrence claim 1 , identically or differently claim 1 , from H claim 1 , F and —CN.5. Device according to claim 1 , characterised in that the compound V contains precisely one unit selected from units of the formulae (E-1) claim 1 , (E-2) and (E-3).7. Device according to claim 6 , characterised in that the compound of the formula (V) contains precisely one unit selected from units of the formulae (E-1) claim 6 , (E-2) and (E-3).8. Device according to claim 6 , characterised in that the index n in formula (V) is equal to 1 or 2.10. Device according to claim 1 , characterised in that the liquid-crystalline material has a clearing point of at least 100° C.11. Device according to claim 1 , characterised in that the liquid-crystalline material has a dielectric anisotropy Δ∈ of −2 to −10.12. Device according to claim 1 , characterised in that the liquid-crystalline material comprises 5 to 15 compounds V claim 1 , each having a different structure.13. Device according to claim 1 , characterised in that the liquid-crystalline material has a total proportion of compounds V of at least 40% by weight.15. Device according to claim 1 , characterised in that the liquid-crystalline material comprises compounds selected from compounds V which contain at least one unit of the formula (E-2) claim 1 , and compound(s) of the formula (F-1) in a total proportion of at least 10% by weight.17. Device according to claim 1 , characterised in that the liquid-crystalline material ...

Transmittance-Variable Device and Use Thereof

A transmittance-variable layer and a transmittance-variable device including the same are disclosed herein. In some embodiments, a transmittance-variable device includes a polarization layer and a transmittance-variable layer disposed on the polarization layer, wherein the transmittance-variable layer includes a first base layer disposed on the polarization layer and a spacer fixed on a surface of the first base layer opposite to the polarization layer, and a second base layer facing the first base layer and spaced apart from the first base layer by the first spacer, wherein the first spacer maintains a gap between the first and second base layers, and a first light modulating material disposed in the gap. 1. A transmittance-variable device , comprising:a polarization layer; anda transmittance-variable layer disposed on the polarization layer, a first base layer disposed on the polarization layer;', 'a first spacer fixed on a surface of the first base layer opposite to the polarization layer;', 'a second base layer facing the first base layer and spaced apart from the first base layer by the first spacer, wherein the first spacer maintains a first gap between the first and second base layers; and', 'a first light modulating material disposed in the first gap., 'wherein the transmittance-variable layer comprises2. The transmittance-variable device according to claim 1 , wherein the polarization layer is a passive polarization layer.3. The transmittance-variable device according to claim 1 , wherein the polarization layer is an active polarization layer.4. The transmittance-variable device according to claim 3 , wherein the active polarization layer claim 3 , comprises:a third base layer;a second spacer; anda fourth base layer facing the third base layer and spaced apart from the third base layer by the second spacer, wherein the second spacer maintains a second gap between the third and fourth base layers; anda second light modulating material disposed in the gap.5. ...

HIGH CONTRAST ELECTRO-OPTIC LIQUID CRYSTAL CAMERA IRIS INCLUDING LIQUID CRYSTAL MATERIAL MIXED WITH A DYE TO IMPROVE ACHROMATIC PERFORMANCE

A high-contrast electro-optic liquid crystal camera iris provides angle independent transmission for uniform gray shades. The liquid crystal iris comprises a combination of first and second liquid crystal devices arranged in optical series and positioned between optical polarizers. The director field of the second liquid crystal device is a mirror image of the director field of the first liquid crystal device, and the first and second liquid crystal devices are placed together so that the azimuthal directions of the surface-contacting directors are in parallel alignment at the adjoining or confronting surfaces of the substrates of the first and second liquid crystal devices. The liquid crystal iris provides, therefore, less angular variation of intermediate transmittances compared with that provided by prior art liquid crystal irises. 1. A high-contrast electro-optic liquid crystal camera iris providing angle independent transmission of incident light for uniform gray shades , comprising:first and second light polarizing filters;a first liquid crystal device including a spaced-apart pair of first electrode structures and a second liquid crystal device including a spaced-apart pair of second electrode structures, the first and second liquid crystal devices including liquid crystal material mixed with a dye to improve achromatic performance over a range of f-stop settings of the iris, and the first and second liquid crystal devices positioned between the first and second light polarizing filters and arranged in optical series so that a surface of one of the first electrode structures adjoins or confronts a surface of one of the second electrode structures to form an interface between the first and second liquid crystal devices, the interface characterized by substantially no selective polarization state blocking of incident light propagating from one to the other of the adjoining or confronting surfaces of the first and second electrode structures;the first liquid ...

TRANSMITTANCE-VARIABLE FILM AND USE THEREOF

A transmittance-variable film having a double-cell structure or a single-cell structure capable of suppressing formation of bubbles inside a liquid crystal layer or at the interface between a base film and a pressure-sensitive adhesive layer under high-temperature and high-humidity reliability conditions is provided. An exemplary transmittance-variable film can be applied to various applications, including various construction or automotive materials that require control of transmittance, or eyewear, such as augmented reality experience or sports goggles, sunglasses or helmets. 1. A transmittance-variable film comprising:a liquid crystal cell including a first substrate, a liquid crystal layer including liquid crystals and a dichroic dye, and a second substrate, and {'br': None, 'i': 'G″/G′', 'tan δ=\u2003\u2003[Equation 1]'}, 'a pressure-sensitive adhesive layer disposed on one side of the liquid crystal layer, wherein the pressure-sensitive adhesive layer has a tangent delta (tan δ) value of the following equation 1 of 0.25 or more to less than 0.5 in a temperature range of 25° C. to 80° C.wherein, G″ is a loss modulus and G′ is a storage modulus, wherein the loss modulus and the storage modulus are values measured under conditions of 10% strain and 2N axial force.2. The transmittance-variable film according to claim 1 , wherein the tan δ value of the pressure-sensitive adhesive layer is an average value of tan δ values in a temperature range of 25° C. to 80° C.3. The transmittance-variable film according to claim 1 , wherein the tan δ value of the pressure-sensitive adhesive layer is an average value of tan δ values in a temperature range of 25° C. to 60° C.4. The transmittance-variable film according to claim 1 , wherein the pressure-sensitive adhesive layer has a thickness in a range of 30 μm to 120 μm.5. The transmittance-variable film according to claim 1 , wherein the pressure-sensitive adhesive layer has a loss modulus in a range of 10 claim 1 ,000 Pa to 35 ...

Laminate, light control device, light control member, and vehicle

Provided is a laminate which can not only control the amount of external light transmitted, but can also be used as a mirror. A laminate 1 comprises: a first liquid crystal member 100 ; a reflection type polarizing member 200 ; and a second liquid crystal member 300 . The first liquid crystal member has first liquid crystal cells with changing orientation states, and a first absorption type polarizing member. The first liquid crystal cells can be switched: between a mode where one type of polarized light of the incident light is blocked and the other type of polarized light is transmitted, and a mode where one type of polarized light of the incident light is blocked and the other type of polarized light is shifted and then transmitted; between a mode where the incident light is transmitted as-is, and a mode where one type of the polarized light is blocked and the other type of polarized light is transmitted; and between a mode where one type of polarized light of the incident light is blocked and the other type of polarized light is transmitted, and a mode where one type of polarized light of the incident light is transmitted and the other type of polarized light is blocked. The reflection type polarizing member receives the light transmitted by the first liquid crystal member, transmits one type of polarized light of the incident light, and reflects the other type of polarized light. The second liquid crystal member has second liquid crystal cells with changing orientation states, and a second absorption type polarizing member. When the reflection type polarizing member has transmitted polarized light, the second liquid crystal cells can be switched between a mode where the polarized light is blocked and a mode where the polarized light is transmitted.

Light Modulation Device

The present application relates to a light modulation device and a use thereof. The present application can provide a light modulation device having both excellent mechanical properties and optical properties by applying a polymer film that is also optically anisotropic and mechanically anisotropic to a substrate.

LIQUID CRYSTAL OPTICAL ELEMENT AND METHOD FOR MANUFACTURING SAME

A liquid crystal optical element includes a first transparent body which includes a first transparent substrate, a first transparent electrode, and a projection-depression structure; a second transparent body which includes a second transparent substrate and a second transparent electrode; and a liquid-crystal-containing resin layer interposed between the first transparent body and the second transparent body. At least one of a size of a droplet of a droplet structure and a size of a mesh of a network structure in the liquid-crystal-containing resin layer is larger near the first transparent body than near the second transparent body. Alternatively, the liquid-crystal-containing resin layer has: a first region that contains the liquid crystal and does not contain the resin; and a second region that contains both the liquid crystal and the resin. 1. A liquid crystal optical element comprising:a first transparent body which includes a first transparent substrate, a first transparent electrode, and a projection-depression structure;a second transparent body which is disposed opposite to the first transparent body, and includes a second transparent substrate and a second transparent electrode that is electrically paired with the first transparent electrode; anda liquid-crystal-containing resin layer which is interposed between the first transparent body and the second transparent body and contains a liquid crystal and a resin,wherein the liquid-crystal-containing resin layer has at least one of a droplet structure formed from the liquid crystal and a network structure formed from the resin, andat least one of a size of a droplet of the droplet structure and a size of a mesh of the network structure is larger near the first transparent body than near the second transparent body.2. The liquid crystal optical element according to claim 1 ,wherein, near the first transparent body, at least one of the droplet of the droplet structure and the mesh of the network structure has ...

LIGHT CONTROLLING APPARATUS, METHOD OF FABRICATING THE LIGHT CONTROLLING APPARATUS, AND TRANSPARENT DISPLAY DEVICE INCLUDING THE LIGHT CONTROLLING APPARATUS

A light controlling apparatus, a method of fabricating the light controlling apparatus, and a transparent display device including the light controlling apparatus are disclosed, in which light may be transmitted or shielded using a polymer dispersed liquid crystal (PDLC) layer and a guest-host liquid crystal (GHLC) layer, where the guest-host liquid crystal layer includes dichroic dyes. The light controlling apparatus includes first and second substrates facing each other; a first electrode on the first substrate; a second electrode on the second substrate; and a polymer dispersed liquid crystal (PDLC) layer and a guest-host liquid crystal (GHLC) layer between the first electrode and the second electrode, wherein the PDLC layer includes first liquid crystals having droplets, and the GHLC layer includes second liquid crystals and dichroic dyes. 1. A light controlling apparatus , comprising:first and second substrates facing each other;a first electrode on the first substrate;a second electrode on the second substrate; anda polymer dispersed liquid crystal (PDLC) layer and a guest-host liquid crystal (GHLC) layer between the first electrode and the second electrode,wherein the PDLC layer includes first liquid crystals having droplets, and the GHLC layer includes second liquid crystals and dichroic dyes.2. The light controlling apparatus of claim 1 , wherein the GHLC layer further includes a wall having dams claim 1 , and a plurality of liquid crystal areas having the second liquid crystals and the dichroic dyes are between the dams.3. The light controlling apparatus of claim 2 , wherein ratios of the second liquid crystals to the dichroic dyes between the plurality of liquid crystal areas have a difference within 1%.4. The light controlling apparatus of claim 2 , further comprising:a first alignment film on the wall to arrange the second liquid crystals and the dichroic dyes; anda second alignment film between the first alignment film and the second electrodewherein ...

OPTOELECTRONIC ELEMENT

Provided is an optoelectronic element including a first substrate, a first electrode on the first substrate, a first lens pattern disposed on the first electrode and including a liquid crystal and a black dye molecule, a second lens pattern disposed on the first lens pattern, and a second electrode on the second lens pattern, wherein the black dye molecule includes about 1 to 4 azo groups and about 2 to 5 aromatic cyclic compounds. 1. An optoelectronic element comprising:a first substrate;a first electrode on the first substrate;a first alignment film disposed on the first electrode and including a first dye;a first lens pattern disposed on the first alignment film and including a liquid crystal; anda second alignment film disposed on the first lens pattern and including a second dye, wherein the first dye is aligned in a first direction and the second dye is aligned in second direction, the second direction intersecting with the first direction.2. The optoelectronic element of claim 1 , wherein the first dye exhibits a black color and includes about 1 to 4 azo groups and about 2 to 5 aromatic groups.3. The optoelectronic element of claim 2 , wherein the second dye exhibits a black color and includes about 1 to 4 azo groups and about 2 to 5 aromatic groups.4. The optoelectronic element of claim 1 , wherein:the first dye include a red dye, a green dye, and a blue dye; andthe first alignment film exhibits a black color. This application is a divisional of U.S. application Ser. No. 16/281,934, filed on Feb. 21, 2019, which is a divisional of U.S. application Ser. No. 15/586,705, filed on May 4, 2017, which is based on and claims priority under 35 U.S.C. § 119 of Korean Patent Application No. 10-2016-0150572, filed on Nov. 11, 2016, the entire contents of which are hereby incorporated by reference.The present disclosure herein relates to an optoelectronic element, and more particularly, to a lens of an optoelectronic element.Optoelectronic elements are elements that ...

HIGH CONTRAST LIQUID CRYSTAL LIGHT CONTROL DEVICE PROVIDING ANGLE INDEPENDENT VARIABLE TRANSMISSION OF INCIDENT LIGHT FOR UNIFORM GRAY SHADES

A high-contrast liquid crystal light control device provides angle independent variable transmission of incident light for uniform gray shades. The liquid crystal light control device comprises a combination of first and second liquid crystal devices arranged in optical series and positioned between optical polarizers. The director field of the second liquid crystal device is a mirror image of the director field of the first liquid crystal device, and the first and second liquid crystal devices are placed together so that the azimuthal directions of the surface-contacting directors are in parallel alignment at the adjoining or confronting surfaces of the substrates of the first and second liquid crystal devices. The liquid crystal light control device provides, therefore, less angular variation of intermediate transmittances compared with that provided by prior art liquid crystal light control devices. 1. A high-contrast liquid crystal light control device providing angle independent variable transmission of incident light for uniform gray shades , comprising:first and second light polarizing filters;a first liquid crystal device including a spaced-apart pair of first electrode structures and a second liquid crystal device including a spaced-apart pair of second electrode structures, the first and second liquid crystal devices positioned between the first and second light polarizing filters and arranged in optical series so that a surface of one of the first electrode structures adjoins or confronts a surface of one of the second electrode structures to form an interface between the first and second liquid crystal devices, the interface characterized by substantially no selective polarization state blocking of incident light propagating from one to the other of the adjoining or confronting surfaces of the first and second electrode structures;the first liquid crystal device having spaced-apart first alignment surfaces which are formed on interior surfaces of the ...

Compound and composition

The present invention provides a compound that has a maximum absorption in a wavelength range of 350-550 nm and functions as a dichroic pigment. Provided is a compound represented by formula (1): [In the formula, R 1 represents a hydrogen atom or the like, R 2 a hydrogen atom or the like, R 3 a hydrogen atom or the like, Z -CO- or the like, and Y a group represented by formula (Y1): (In the formula, ＊ represents a site of bonding with N.) or a group represented by formula (Y2): (In the formula, ＊ represents a site of bonding with N, P 1 and P 2 each independently represent -S- or the like, and Q 1 and Q 2 each independently represent =N- or the like.)]

Device for regulating the passage of light

The present invention relates to a device for regulating the passage of light, characterized in that it comprises a layer containing a liquid-crystalline mixture having a characteristic structural element.

System and method for modulating light intesity

The present invention relates to a light intensity modulator that employs a hologram. In one embodiment, the light intensity modulator includes an electrical circuit and a holographic optical element containing the hologram. The holographic optical element is electrically coupled to and receives a variable voltage generated by the electric circuit. Additionally, the holographic optical element receives an input light from a light source. The holographic optical element receives and diffracts the input light to produce first and second output lights. An intensity of the first output light varies directly with the magnitude of the voltage. An intensity of the second output light varies indirectly with the magnitude of the voltage. The first and second output lights define a non-zero angle therebetween.

System and method for varying the reflectance or transmittance of light

Device for transmitting light at variable intensity, the device including a front variable polarizer, polarizing incoming light at a first selected polarization level, in a first direction and a rear variable polarizer, optically coupled with the front variable polarizer, polarizing light exiting the front variable polarizer at a second selected polarization level, in a second direction, wherein the first selected polarization level and the second selected polarization level are substantially zero, when no substantial electric power is applied respectively, to the front variable polarizer and the rear variable polarizer.

反射式液晶显示面板、其制备方法及显示装置

提供一种反射式液晶显示面板，包括：相对设置的第一基板和第二基板，设置在第一基板外侧的第一偏光片，设置在第二基板外侧的第二偏光片，填充在第一基板和第二基板之间的液晶和设置在第一偏光片上的具有导光网点的导光板，和侧入式背光源，还包括层叠于导光板的与第一偏光片相对一侧的第三偏光片、具有液晶和二向色性染料混合物的复合层和第三基板；第三偏光片与第一偏振片的偏振方向相同；在显示黑态时第三偏光片的吸光轴与复合层的吸光轴正交。本发明在导光板上方增加偏光片以及二向色性染料复合层，显示黑态下使导光板上方偏光片吸光轴与二向色染料复合层吸光轴正交，消除光线在导光板上表面的逃逸，极大提高反射式液晶显示面板的对比度。

Liquid crystal display panel

Light controlling device, transparent display device including the same, and method for fabricating the same

본 발명의 실시예에 따른 투명표시장치는 입사되는 빛을 투과시키는 투과 영역들과 빛을 발광하는 발광 영역들을 포함하는 투명표시패널과, 상기 투명표시패널의 배면에 배치되고, 입사되는 빛을 투과시키는 투과 모드와 입사되는 빛을 차광하는 차광 모드가 가능한 광 제어장치, 광 제어장치의 제조 방법 및 상기 광 제어장치를 포함하는 투명 표시 장치에 관한 것이다. 상기 광 제어장치는 서로 마주보는 제 1 기판과 제 2 기판, 상기 제 1 기판과 제 2 기판 사이에 마련된 액정셀들, 상기 액정셀들의 셀갭을 유지하기 위한 격벽들을 포함한다. 상기 격벽은 허니컴 구조를 가질 수 있으며, 격벽 사이사이에는 복수의 컬럼 스페이서들을 포함할 수 있다. A transparent display device according to an embodiment of the present invention includes a transparent display panel including transmissive regions for transmitting incident light and light emitting regions for emitting light, and is disposed on a rear surface of the transparent display panel and transmits incident light The present invention relates to a light control device capable of a transmission mode for light and a light blocking mode for blocking incident light, a method of manufacturing the light control device, and a transparent display device including the light control device. The light control device includes a first substrate and a second substrate facing each other, liquid crystal cells provided between the first substrate and the second substrate, and barrier ribs for maintaining a cell gap between the liquid crystal cells. The barrier ribs may have a honeycomb structure, and may include a plurality of column spacers between the barrier ribs.

光控制装置、包括该装置的透明显示设备及其制造方法

本发明提供光控制装置、包括该装置的透明显示设备及其制造方法。所述光控制装置包括：第一基板；与所述第一基板平行的第二基板；位于所述第一基板的与所述第二基板面对的表面上的第一电极；位于所述第二基板的与所述第一基板面对的表面上的第二电极；位于所述第一电极与所述第二电极之间的分隔壁，所述分隔壁配置成分隔在所述第一电极与所述第二电极之间的空间；多个柱状衬垫料，所述多个柱状衬垫料位于所分隔的空间中并与所述分隔壁分开，所述多个柱状衬垫料的每一个位于所述第一电极与所述第二电极之间，以保持所述第一电极与所述第二电极之间的距离；和液晶，所述液晶位于所述分隔壁与所述多个柱状衬垫料之间的所分隔的空间中。

Electronically dimmable optical device

Transmittance-variable device

본 출원은 투과율 가변 장치 및 이의 용도에 관한 것이다. 본 출원의 투과율 가변 장치는 클리어 상태 및 블랙 상태의 사이를 스위칭할 수 있고, 클리어 상태에서의 높은 투과율과 블랙 상태에서의 높은 차단율을 나타내며, 경사각에서도 우수한 콘트라스트비를 나타낼 수 있다. 이러한 본 출원의 투과율 가변 장치는, 투과율의 조절이 필요한 다양한 건축용 또는 차량용 소재나, 증강 현실 체험용 또는 스포츠용 고글, 선글라스 또는 헬멧 등의 아이웨이(eyewear)를 포함하는 다양한 용도에 적용될 수 있다. The present application relates to a variable transmittance device and its use. The variable transmittance device of the present application can switch between a clear state and a black state, exhibit a high transmittance in the clear state and a high blocking rate in the black state, and exhibit an excellent contrast ratio even at an inclination angle. The variable transmittance device of the present application can be applied to a variety of applications including eyewear, such as a variety of building or vehicle materials that need to adjust the transmittance, or augmented reality experience or sports goggles, sunglasses or helmets.

Liquid crystal display device of guest-host system

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Light Modulating Device

본 출원은 광변조 디바이스 및 이의 용도에 관한 것이다. 본 출원에서는 광학적으로도 비등방성이고, 기계적으로도 비등방성인 고분자 필름을 기판으로 적용하여, 기계적 물성과 광학적 물성이 모두 우수한 광변조 디바이스를 제공할 수 있다. The present application relates to an optical modulation device and its use. In the present application, a polymer film that is optically anisotropic and mechanically anisotropic is applied as a substrate, thereby providing a light modulation device having excellent mechanical properties and optical properties.

Color liquid crystal display panel

本发明提供一种彩色液晶显示面板，包括：相互平行设置的数层液晶盒（2）及用于粘接所述数层液晶盒（2）的粘接固件（8），每一所述液晶盒（2）包括一薄膜晶体管基板（20）、一封装基板（30）及密封于所述薄膜晶体管基板（20）与封装基板（30）之间的染料液晶层（40），所述染料液晶层（40）包括液晶材料及二色性染料，每一所述液晶盒（2）中的二色性染料吸收一预定波长范围的光，所述数层液晶盒（2）分别吸收不同波长范围的光。本发明通过在液晶材料中加入二色性染料，利用二色性染料吸收部分颜色的光，进而实现彩色显示，不需要设置现有技术中的偏光片和制作彩色滤光膜基板，降低了液晶显示面板的制造成本以及对背光亮度的要求。

Film for adjusting transmittance

본 출원은 투과율 가변 필름 및 이의 용도에 관한 것이다. 본 출원의 투과율 가변 장치는 클리어 상태 및 다크 상태의 사이를 스위칭할 수 있고, 좌우 시야각에서의 콘트라스트 비의 차이를 감소시킴으로써 우수한 좌우 대칭성을 확보할 수 있다. 이러한 본 출원의 투과율 가변 필름은 투과율의 조절이 필요한 다양한 건축용 또는 차량용 소재나, 증강 현실 체험용 또는 스포츠용 고글, 선글라스 또는 헬멧 등의 아이웨이(eyewear)를 포함하는 다양한 용도에 적용될 수 있다.

Liquid crystal display device and manufacturing method thereof

본 발명은 액정표시장치 및 그 제조 방법에 관한 것으로서, 액정표시장치는 제 1 기판, 제 1 기판과 대향하는 제 2 기판, 제 2 기판에 대향하는 제 1 기판의 한 면에 형성된 다수의 스위칭 소자, 제 1 기판에 대향하는 제 2 기판의 한 면에 형성된 공통 전극, 액정층과 제 2 기판 사이에 공통 전극을 유지시키기 위해 제 2 기판 상에 쌓아올려지고 제 1 기판과 제 2 기판 사이에 배치된 다수의 액정층, 액정층에 선택적으로 형성된 다수의 돌기 전극, 및 액정층 중 대응하는 액정층에 각각 형성된 다수의 화소 전극으로 이루어지고, 대응하는 두개의 액정층 사이에 각각 형성된 화소 전극은 하나 또는 여러 돌기 전극을 통해 제 1 기판에 형성된 스위칭 소자 중 대응하는 스위칭 소자와 접속되며, 여러 돌기 전극은 인접한 액정층의 각각의 경계에서 접촉되고 종속 접속되는 것을 특징으로 한다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device and a method of manufacturing the same, wherein the liquid crystal display device includes a plurality of switching elements formed on one surface of a first substrate, a second substrate facing the first substrate, and a first substrate facing the second substrate. A common electrode formed on one side of the second substrate opposite the first substrate, stacked on the second substrate and disposed between the first substrate and the second substrate to hold the common electrode between the liquid crystal layer and the second substrate; A plurality of liquid crystal layers, a plurality of projection electrodes selectively formed on the liquid crystal layer, and a plurality of pixel electrodes respectively formed on the corresponding liquid crystal layer among the liquid crystal layers, and each pixel electrode formed between the corresponding two liquid crystal layers is one Or a corresponding switching element among the switching elements formed on the first substrate through the various protruding electrodes, wherein the various protruding electrodes are contacted at each boundary of the adjacent liquid crystal layer and the subordinate contact is made. It is characterized.

A light control device, a method for manufacturing the light control device, and a display device including the light control device

광 제어 장치, 광 제어 장치의 제조 방법 및 광 제어 장치를 포함하는 표시 장치가 제공된다. 광 제어 장치는 서로 마주보는 제1 기판 및 제2 기판, 제1 기판과 제2 기판 사이의 복수의 액정부를 포함하고, 복수의 액정부는 액정을 포함하는 액적 및 폴리머를 갖는 고분자 분산형 액정(PDLC)으로 구성된 제1 액정부 및 제1 액정부 상에 또는 아래에 배치되고, 액정 및 발색부재를 갖는 게스트 호스트 액정(GHLC)으로 구성된 제2 액정부를 포함한다. A light control device, a method for manufacturing the light control device, and a display device including the light control device are provided. The light control device includes a first substrate and a second substrate facing each other, and a plurality of liquid crystal portions between the first and second substrates, and the plurality of liquid crystal portions includes a liquid crystal-containing droplet and a polymer dispersed liquid crystal (PDLC) having a polymer. ) and a second liquid crystal part disposed on or below the first liquid crystal part, and made up of a guest host liquid crystal (GHLC) having a liquid crystal and a color developing member.

Liquid crystal projection device

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Optical Device

본 출원은, 광량 조절 장치에 대한 것이다. 일 예시에서 본 출원은, 차단 상태와 투과 상태에서의 투과율 차이가 크고, 중간 수준의 투과율 등 원하는 투과율 수준을 자유롭게 조절할 수 있으며, 투과율 변동의 속도도 빠르게 가져갈 수 있는 광량 조절 장치를 제공할 수 있다.

Variable transmittance film

LCD and its driving method

한 표면에 단결정 실리콘층을 갖는 제1기판; 대향면으로서 강유전성 액정층을 삽입시켜 단결정 실리콘층을 갖는 제1기판면과 대향배치된 투명 제2기판; 및 강유전성 액정층과 접하는 제1기판의 표면상에 형성된 복수의 화소영역 마다의 단결정 실리콘층 중에 형성된 복수의 회로소자를 포함하는 액정표시장치.

Light modulation device

本申请涉及光调制装置和眼部佩戴物。本申请通过将同样地光学上各向异性且机械上各向异性的聚合物膜应用于基底而可以提供具有优异的机械特性和优异的光学特性二者的光调制装置。

Liquid crystal display device

Liquid crystal display device

LCD and its manufacturing method

시차에 의한 색 편차의 해소와 콘트라스트비의 향상, 개구율의 향상을 실현할 수 있는 액정표시소자를 제공하는 것을 목적으로 한다. 이 목적은, 다음 구성에 의해 실현할 수 있었다. 화소전극과 구동소자를 갖는 기판 위에 액정층이 적층되어, 상기 적층된 액정층 사이에는 투명한 화소전극이 배치되고, 또한 이 투명한 화소전극과 상기 기판 위에 형성된 구동소자가, 상기 액정층의 소정영역에 형성된 개구부를 통해 전기적으로 접속된 액정표시소자에 있어서, 상기 액정층이, 액정을 내포한 마이크로 캡슐과, 상기 마이크로 캡슐을 결착하는 바인더를 포함하여 구성되고, 상기 기판 위의 화소전극과 액정층과의 사이 또는 액정층간에 배치된 화소전극과 액정층과의 사이에는 절연층이 형성되어 있으며, 또한 상기 마이크로캡슐의 벽막 및 상기 바인더 및 상기 절연층이 광감응성 고분자재료로 조성되어 있다.

Variable transmittance device

本申请涉及一种透射率可变装置及其用途。本申请的透射率可变装置可以在透明状态与黑色状态之间切换，可以表现出透明状态下的高透射率和黑色状态下的高遮蔽率，并且甚至在倾角下也可以表现出高对比度。本申请的这样的透射率可变装置可以应用于各种应用，包括需要调节透射率的各种建筑或汽车材料；或眼部佩戴物，例如用于增强现实体验或运动的护目镜、太阳镜、或头盔。

Compounds and compositions

波長３５０ｎｍ〜５５０ｎｍの範囲に極大吸収を有する、二色性色素として機能する化合物を提供すること。式（１）：［式中、Ｒ1は、水素原子等を、Ｒ2は、水素原子等を、Ｒ3は、水素原子等を、Ｚは、−ＣＯ−等を、Ｙは、式（Ｙ１）：（式中、＊はＮとの結合部位を表す。）で示される基または式（Ｙ２）：（式中、＊はＮとの結合部位を表し、Ｐ1およびＰ2は、それぞれ独立して、−Ｓ−等を表し、Ｑ1およびＱ2は、それぞれ独立して、＝Ｎ−等を表す。）で示される基を表す。]で表される化合物。 To provide a compound functioning as a dichroic dye having a maximum absorption in a wavelength range of 350 nm to 550 nm. Formula (1): [wherein R 1 represents a hydrogen atom, R 2 represents a hydrogen atom, R 3 represents a hydrogen atom, Z represents —CO—, etc. Y represents a formula (Y 1): (Wherein * represents a bonding site with N) or formula (Y2): (wherein * represents a bonding site with N, and P1 and P2 are each independently- S—etc., Q 1 and Q 2 each independently represents ═N— etc.). ] The compound represented by this.

Large scale liquid crystal structures

一种液晶结构(200)，包括：第一和第二反射区域(214a，214b，214c)，排列为分别反射第一和第二颜色。所述第一和第二反射区域(214a，214b，214c)横向设置在反射方向(R)上，每个区域包括：反射底部区域；以及选择器(210)，所述选择器可控制，用以控制从所述区域反射的光。此外，可控制反射体(212)在反射方向(R)上叠置在所述反射区域上，并且可控制，用以透射或者散射入射光。

Device for regulating the passage of light

본 발명은, 특징적인 구조 요소를 포함하는 액정 혼합물을 포함하는 층을 포함하는 것을 특징으로 하는, 광의 통과를 조절하기 위한 장치에 관한 것이다. The invention relates to a device for controlling the passage of light, characterized in that it comprises a layer comprising a liquid crystal mixture comprising characteristic structural elements.

Mirror for variable reflection

본 출원은 액정셀을 이용한 반사율 가변 미러에 관한 것이다. 본 출원의 반사율 가변 미러는 게스트호스트 액정층을 포함하는 제1 액정셀, 제1 반사형 편광 필름, 위상차 가변 액정층을 포함하는 제2 액정셀, 제2 반사형 편광 필름 및 흡수판을 순차로 포함할 수 있다. 본 출원의 반사율 가변 미러는 반사 방지 모드에서 반사율을 낮춤으로써 우수한 반사율 가변 특성을 구현할 수 있다. The present application relates to a variable reflectivity mirror using a liquid crystal cell. The reflectance variable mirror according to the present application includes a first liquid crystal cell including a guest host liquid crystal layer, a first reflective polarizing film, a second liquid crystal cell including a retardation variable liquid crystal layer, a second reflective polarizing film, . The reflectance variable mirror of the present application can realize excellent reflectivity variable characteristics by lowering the reflectance in the antireflection mode.

Electronic console with multiple polarizer layers

本文公开了用于利用偏振装置的组合来实施具有空正面外观的电子显示器的装置、方法和系统。具体地，本文公开的各种排列和组合均包括线性偏振器、有源偏振器以及线性透镜和弯曲透镜的各种组合，每个均由源自背光显示器的光驱动。

Liquid crystal display device and its manufacture

(57)【要約】 【課題】 製造が簡便であり、高い信頼性を有する液晶 表示装置を得る。 【解決手段】 対向する第１の基板４１および第２の基 板３１と、第１の基板上に形成されたスイッチング素子 と、第２の基板上に形成された共通電極３５と、第１お よび第２の基板間に積層された液晶層１６，２６，３６ と、各液晶層間に形成された画素電極１５，２５と、液 晶層上に選択的に形成され、画素電極１５，２５をスイ ッチング素子の端子４２ａ、４２ｂに接続するために、 当接して縦続接続する部分を含む複数の突起電極１４ ａ、１４ｂ、２４を有する。

Device comprising two liquid crystal switching layers for adjusting the passage of optical energy

Window

Thiadiazolochinoxalinderivate

Die vorliegende Erfindung betrifft Thiadiazolochinoxalinderivate der Formel I,worin R11, R12, A11, A12, A21, A22, Z11, Z12, Z21, Z22, W, X11, X12, r und s die in Anspruch 1 angegebene Bedeutung haben, Verfahren und Zwischenprodukte zu deren Herstellung, die Verwendung der Verbindungen der Formel I für optische, elektrooptische und elektronische Zwecke, insbesondere in Flüssigkristallmedien und in Vorrichtungen zur Regulierung des Energie-Durchtritts von einem Außenraum in einen Innenraum, sowie diese FK-Medien und die diese Medien enthaltende Vorrichtungen. The present invention relates to thiadiazoloquinoxaline derivatives of the formula I in which R11, R12, A11, A12, A21, A22, Z11, Z12, Z21, Z22, W, X11, X12, r and s are as defined in claim 1, processes and intermediates for their preparation, the use of the compounds of the formula I for optical, electro-optical and electronic purposes, in particular in liquid-crystal media and in devices for regulating the passage of energy from an external space into an interior, as well as these LC media and the devices containing these media.

Device for the regulation of light transmission

The present invention relates to devices for the regulation of light transmission and in particular switchable windows. The present invention in particular relates to window elements comprising a switchable optical cell having a homeotropically aligned liquid crystal layer wherein a pretilt angle in the range of from 77° to 88° is set.

Display panel and display device

本发明涉及显示技术领域，公开了一种显示面板及显示装置。所述显示面板包括光学组件和位于光学组件相对两侧的两个宾主型液晶盒。所述光学组件用于反射特定波长的光线，透射其他光线。所述宾主型液晶盒包括多个像素单元，每个像素单元具有透射自然光和透射线偏振光两种工作状态。当像素单元透射线偏振光时，被所述光线组件反射的光线不能通过所述像素单元，实现暗态显示。当像素单元透射自然光时，从光学组件的一侧透射的光线还可以用于另一侧的显示，提高了光线的利用率，增加了显示亮度和对比度。由于不再使用偏光片，可以大大节省成本及制造工艺。当在户外使用时，可以利用外界自然光实现显示，具有节能环保的优点。

Optoelectronic device

본 발명에 따르면, 광전 소자가 제공된다. 광전 소자는 제1 기판; 상기 제1 기판 상의 제1 전극; 상기 제1 전극 상에 배치되고, 액정 및 흑색 염료 분자를 포함하는 제1 렌즈 패턴; 및 상기 제1 렌즈 패턴 상에 배치된 제2 렌즈 패턴; 상기 제2 렌즈 패턴 상의 제2 전극을 포함할 수 있다. 상기 흑색 염료 분자는 1 내지 4개의 아조 그룹 및 2 내지 5개의 방향족 고리 화합물을 포함할 수 있다. According to the present invention, an optoelectronic device is provided. The photoelectric device includes a first substrate; a first electrode on the first substrate; a first lens pattern disposed on the first electrode and including liquid crystal and black dye molecules; and a second lens pattern disposed on the first lens pattern. A second electrode on the second lens pattern may be included. The black dye molecule may include 1 to 4 azo groups and 2 to 5 aromatic ring compounds.

Improved transmissive and reflective liquid crystal display and method thereof

本发明涉及液晶(LC)显示器,这种显示器包括多个具有明确定义的形状、尺寸、和纵横比的盒,这些盒最好用含有二向色性染料的液晶组分填充。本发明还涉及制造上述液晶显示器的新颖方法。

Preparation Method for Substrate used in Optical Device

본 출원은 광학 디바이스용 기판의 제조 방법에 대한 것이다. 본 출원에서는, 표면에 스페이서가 존재하는 기판으로서, 상기 스페이서가 상기 기판상에 형성된 배향막 상에 균일하게 분산된 상태로 고착화되어 있는 기판을 효과적으로 제조하는 방법을 제공할 수 있다. This application relates to a method for manufacturing a substrate for an optical device. In the present application, it is possible to provide a method for effectively manufacturing a substrate in which spacers are present on the surface, and the spacers are fixed in a uniformly dispersed state on an alignment layer formed on the substrate.

A Display

A display (7) comprises an image display panel (1) for displaying a first image and a switchable privacy device (14) disposed in an optical path through the image display panel (1). The privacy device comprises a guest-host liquid crystal material (8) and is switchable between a public mode and a private mode. In its private mode, the privacy device displays a second image in a direction different from a pre-determined viewing direction whereby the image displayed by the display (7) along the direction different from the pre-determined direction is a superposition of the first image and the second image. The second image degrades the observed image, so that an observer located at the side, for example, of the display cannot clearly make out the first image. The second image is not displayed in the intended viewing direction, so that the first image is clearly seen by an observer viewing the display along the intended viewing direction.

Transmittance variable film

提供了透射率可变膜及其用途。所述透射率可变膜可以有益于在明态与暗态之间切换并且降低左视角与右视角之间的对比度差异，从而确保优异的两侧对称性。这样的透射率可变膜可以应用于各种应用，包括用于需要控制透射率的建筑物或车辆的各种材料，或者眼部佩戴物例如运动或体验增强现实用护目镜、太阳镜、头盔等。

Transparent display based on a guest-host cholesteric liquid crystal device

A transparent display utilises a guest-host liquid crystal light-controlling device (100) comprising cholesteric liquid crystals (141) and dichroic dyes (142). When the device (100) is switched into the focal conic state, a strong light-shielding state results. The transparent state is achieved by switching the guest-host liquid crystal (140) into the homeotropic state. Electrodes (120, 160) are provided on both cell substrates (110,170). On at least one of the substrates, the electrodes (121a, 121b, 121c) are arranged to generate a horizontal (hef) and a vertical (vef) electric field, which are used to switch between the focal conic and homeotropic states. The device is bistable and has an initial transparent state without an applied voltage.

DEVICE FOR MODULATING THE ILLUMINATION LIGHT OF AN ELECTRO-OPTICAL DISPLAY SCREEN

For adjusting the device of light entrance

本申请涉及用于调节光进入室的装置，其包括具有特定设计的可切换层，所述可切换层含有扭转向列型液晶介质和二色性化合物。

POLYCHROME SCREEN

L'invention concerne un écran polychrome comprenant des régions 40A, 40B alternées d'un premier A et d'un deuxième B matériaux d'affichage dichroques intercalées entre une première et une deuxième parois 31, 33 isolantes et des régions 42B, 42Calternées d'un troisième B et d'un quatrième C matériaux d'affichage dichroques intercalées entre la deuxième et une troisième parois 33, 35 isolantes, le deuxième et le troisième matériaux d'affichage étant de façon avantageuse identiques; chaque région du premier matériau est superposée à la fois à une région du troisième matériau et à une partie d'une région du quatrième matériau et chaque région du deuxième matériau est superposée à l'autre partie d'une région du quatrième matériau. L'invention s'applique notamment aux cellules d'affichage polychrome à cristaux liquides tels que les cristaux liquides de type nématique ou ferroélectrique, utilisant aussi bien un mode d'affichage multiplex que non multiplex. The invention relates to a full color screen comprising alternating regions 40A, 40B of a first A and a second B dichroic display materials interposed between a first and a second insulating wall 31, 33 and regions 42B, 42 a third B and a fourth C dichroic display materials interposed between the second and third insulating walls 33, 35, the second and third display materials being advantageously identical; each region of the first material is superimposed on both a region of the third material and a part of a region of the fourth material and each region of the second material is superimposed on the other part of a region of the fourth material. The invention applies in particular to polychrome liquid crystal display cells such as liquid crystals of the nematic or ferroelectric type, using both a multiplex and non-multiplex display mode.

Light control element and display device containing same

光控制元件(15)以第一角度范围输出具有第一偏振态的光，以大于第一角度范围的第二角度范围输出具有不同于第一偏振态的第二偏振态的光。光控制元件(15)可以对具有第一偏振态且沿第一方向范围传播的光不透明或基本上不透明，对具有第一偏振态且沿不同于第一方向范围的第二方向范围传播的光基本上透明，并且对第二偏振态基本上透明。通过改变入射到元件或从元件输出的光的偏振态，从光控制元件中输出的角度范围可以变化。光控制元件可以结合在显示器中。作为选择，它可以与偏振切换开关一起使用作为光控制器件。

Transmissive or reflective liquid crystal display

This invention relates to a liquid crystal display with improved contrast ratio, switching performance, reflectivity at the Dmin state and structural integrity, and methods for its manufacture. The liquid crystal display of the present invention comprises microcups as display cells, wherein the microcups are formed from a microcup composition and filled with a liquid crystal composition.