Abstract: In an embodiment, a transflective LCD comprises pixels each comprising a first polarizing layer; a second polarizing layer; a first substrate layer and a second substrate layer opposite the first substrate layer; the first and second substrate layers are between the first polarizing layer and the second polarizing layer; a liquid crystal material between the first and second substrate layers; an over-coating layer adjacent to the first substrate layer; the over-coating layer comprises at least one opening for a transmissive part; a remainder of the over-coating layer forms in part a reflective part; a patterned in-cell retarder adjacent to the first substrate layer; the patterned in-cell retarder covers at least a portion of the reflective part; a reflective layer between the over-coating layer and the second substrate layer; the reflective layer substantially covers the reflective part; the patterned in-cell retarder is between the reflective layer and the first substrate layer.

Abstract: A first retardation plate arranged on a front side causes light received through the a first polarizing plate from the front side to become close to circularly polarized light rotating in a first direction. Second and third retardation plates arranged on a back side cause light received through a second polarizing plate from the back side to become close to circularly polarized light rotating in a second direction opposite to the first direction while passing through both of the second and third retardation plates and the liquid crystal layer in black display period. With this structure, good image quality can be obtained even when used in outdoor.

Abstract: Optical identification and/or authentication of a document or item with the help of a marking comprising a random distribution of circular polarized light reflecting particles, the marking being applied to the document or item through an ink, and the reading device exploiting circular polarization to discriminate the flakes from the background.

Abstract: An LCD device is disclosed which includes: a first substrate; a second substrate disposed to face the first substrate; a liquid crystal layer inserted between the first and second substrates; a cholesteric color filter layer disposed on the first substrate; and an auxiliary color filter layer disposed on the cholesteric color filter layer and formed to transmit a fixed wavelength band of light progressing in a front viewing direction of the cholesteric color filter layer and filter every wavelength band of light progressing in a side viewing direction of the cholesteric color filter layer except the fixed wavelength band of light.

Abstract: A transflective liquid crystal display (LCD) includes: a first substrate formed with a thin film transistor and a pixel electrode connected to the thin film transistor; a second substrate formed with a common electrode and a color filter and facing the first substrate; a liquid crystal layer formed between the first substrate and the second substrate; a first polarizing plate disposed at one side of the first substrate that does not face the second substrate; a second polarizing plate disposed at one side of the second substrate that does not face the first substrate; a cholesteric film formed on the first substrate; and a backlight unit disposed at one side of the first polarizing plate that does not face the first substrate.

Abstract: A transflective liquid crystal display device includes a liquid crystal display panel which is configured such that a liquid crystal layer is held between a pair of substrates, and to which an OCB mode is applied, and a pair of optical elements which are disposed on outsides of the liquid crystal layer, and optically compensate a retardation of the liquid crystal layer in a predetermined display state in which a voltage is applied to the liquid crystal layer, wherein the optical element is configured to include a circular polarization element including a polarizer and a first retardation plate which imparts a retardation of ¼ wavelength, and the first retardation plate has such wavelength dispersion characteristics as to establish a relationship, ?1<1, where ?1 is a ratio of an in-plane retardation Re430 at a wavelength of 430 nm to an in-plane retardation Re550 at a wavelength of 550 nm.

Abstract: The present invention relates to a liquid crystal display, more specifically, to a single layer reflective full color cholesteric display employing full spectrum circularly polarization. The display has not only zero-field long time memory but also paper-like super high brightness and contrast.

Abstract: In an LCD device, a circular polarizer is provided to each of two substrates that hold a liquid crystal layer. The circular polarizer on the display surface side includes a polarizer, ?/2 plate in which Rth>0, and a ?/4 plate in which Rth<0; and the circular polarizer on the backlight side includes a polarizer, a ?/2 plate in which Rth<0, and a ?/4 plate in which Rth>0. Rth is a retardation in the thickness direction of a ?/2 plate or a ?/4 plate. The absolute value of the sum of the Rth between the ?/2 plate for which Rth>0 and the ?/2 plate for which Rth<0 is reduced, and in the absolute value of the sum of the Rth between the ?/4 plate for which Rth<0 and the ?/4 plate for which Rth>0.

Abstract: Various embodiments include devices and methods that allow a display device to, among other things, substantially match reflected color or luminance, or both, between a lens border and an active area of the display device. In one embodiment, a circular polarizer located external to a display area of the device is used. In one embodiment an additional quarter wave retarder located external to the display area is used.

Abstract: A color filter for use in a light-emitting display element which emits at least white light, the color filter including a circularly polarizing layer which includes a polarizing layer, the polarizing layer having an orientation layer and a liquid crystal compound layer, wherein the circularly polarizing layer is formed only in an optical path of the white light.

Abstract: A display apparatus includes a display panel, a first polarization part, and a second polarization part. The display panel includes an array substrate, an opposite substrate and an electro-optical material layer disposed between the array substrate and the opposite substrate. The electro-optical material layer reflects first circularly polarized light having a wavelength of a predetermined range and transmits second circularly polarized light having a phase difference with the first circularly polarized light. The first polarization part faces a rear face of the array substrate and converts incident light of the rear face into the first circularly polarized light. The second polarization part faces a front face of the opposite substrate and blocks the first circularly polarized light reflected from the electro-optical material layer and transmits the second circularly polarized light transmitted through the electro-optical material layer.

Abstract: A liquid crystal display apparatus includes a liquid crystal display panel having a first substrate, a second substrate, a liquid crystal layer held in a sandwiched condition between the substrates, and a pixel electrode and common electrode disposed on the second substrate in order to drive the liquid crystal layer. A backlight is disposed on one face of the liquid crystal display panel, a first polarizer disposed on one face of the first substrate, at a side opposite to the second substrate, and a second polarizer disposed on one face of the second substrate, at a side opposite to the first substrate. The liquid crystal layer has a property of generating optically anisotropy from an optical isotropic state when a voltage is applied, and the liquid crystal display panel includes a transmission area and a reflection area in one pixel.

Abstract: Provided are a laminated optical film capable of enhancing a contrast ratio in an oblique direction remarkably while enhancing viewing angle characteristics when being used in a liquid crystal display apparatus or the like, and a liquid crystal panel and a liquid crystal display apparatus using the laminated optical film. The laminated optical film of the present invention includes a polarizer, a first optical compensation layer, and a second optical compensation layer in the stated order, in which the first optical compensation layer has a refractive index profile of nx>nz>ny and is placed so that a slow axis direction thereof is substantially parallel to or substantially perpendicular to an absorption axis direction of the polarizer, and the second optical compensation layer converts linearly polarized light into circularly polarized light or circularly polarized light into linearly polarized light in a visible light region.

Abstract: Disclosed herein is a recording and reproducing device including: a light source; an intensity modulating section; a polarization beam splitter; a selective polarization direction controlling section; a linearly polarized light/circularly polarized light converting section; and a driving controlling section.

Abstract: One embodiment of the present invention provides a display that emits circularly-polarized light. This display includes a display mechanism that emits linearly-polarized light and a layer placed in the path of the linearly-polarized light. The layer receives the linearly-polarized light on one surface, converts the linearly-polarized light to circularly-polarized light, and then emits the circularly-polarized light from another surface. By emitting circularly-polarized light, the display reduces the perceived distortion found at some angles when the display is viewed through a linearly-polarizing filter.

Abstract: A window having electrically controllable transmission and reflection includes a layer of liquid crystal material and polarizers on either side thereof. Different combinations of absorptive and reflective polarizers are disclosed. These different combinations can be used in different applications to achieve the desired results. Transparent, conductive layers are provided to apply an electrical field to the liquid crystal material so as to selectively control the rotation of the polarization of light passing therethrough.

Abstract: The present invention relates to a liquid crystal display, comprising a lower alignment film formed on a lower substrate; an upper alignment film formed on an upper substrate; a liquid crystal layer sandwiched between the lower and upper substrates; a phase compensation film adhered on the outer surface of the upper substrate; and a polarizer adhered on the phase compensation film wherein the lower alignment film has an alignment angle of ?10 to 20° with respect to a horizontal line, the upper alignment film has an alignment angle of 40 to 55° with respect to a horizontal line, the liquid crystal layer has a phase delay value (d?n) of 0.24-0.27 ?m, the phase compensation film has a phase compensation function of ?/4 and also has an optical axis making 140-146° with a horizontal line, and the polarizer has a absorption axis making 120 to 122.5° with a horizontal line.

Abstract: The present invention relates to a liquid crystal display, comprising a lower alignment film formed on a lower substrate; an upper alignment film formed on an upper substrate; a liquid crystal layer sandwiched between the lower and upper substrates; a phase compensation film adhered on the outer surface of the upper substrate; and a polarizer adhered on the phase compensation film wherein the lower alignment film has an alignment angle of ?10 to 20° with respect to a horizontal line, the upper alignment film has an alignment angle of 40 to 55° with respect to a horizontal line, the liquid crystal layer has a phase delay value (d?n) of 0.24-0.27 ?m, the phase compensation film has a phase compensation function of ?/4 and also has an optical axis making 140-146° with a horizontal line, and the polarizer has a absorption axis making 120 to 122.5° with a horizontal line.

Abstract: A low color shift polarizer assembly is provided, comprising a cholesteric liquid crystal film with a plurality of very tiny grooves which are irregularly dispersed on a surface of the cholesteric liquid crystal film. The selective reflective wavelength range of the cholesteric liquid crystal film has a long wavelength boundary ?700 nm and a short wavelength boundary ?420 nm. A quarter wavelength retardation plate can be disposed on the cholesteric liquid crystal film to build up the final low color shift polarizer assembly. The polarizer assembly can be combined with a backlight unit and further with a liquid crystal display to provide low color shift at large viewing angles and high brightness.

Abstract: A three-dimensional display includes a liquid crystal display (LCD) panel, a polarizer, a composite optical film, a phase retarder, and an adhesive layer. The LCD panel has a display surface and a rear surface opposite to the display surface. The polarizer is disposed on the rear surface. The composite optical film is disposed on the display surface. The composite optical film includes a quarter wave plate and at least one optical film located between the LCD panel and the quarter wave plate. The phase retarder has a plurality of phase retardation patterns separated from one another, and phase retardation of each phase retardation pattern is ?/2. The adhesive layer is disposed between the composite optical film and the phase retarder, and the phase retarder adheres to the quarter wave plate through the adhesive layer.

Abstract: A liquid crystal cell (5) comprises a layer (4) of cholesteric liquid crystal material; and a retarder (3) disposed in an optical path through the layer (4) of cholesteric liquid crystal material. The cholesteric liquid crystal material is switchable between a first state in which it cooperates with the retarder (3) to provide a first viewing angle range and a second state in which it cooperates with the retarder (3) to provide a second viewing angle range which is smaller than the first viewing angle range. The pitch of the cholesteric liquid crystal material is greater than an intended wavelength of operation of the liquid crystal cell divided by the average refractive index of the liquid crystal material. The liquid crystal cell may be used as a Viewing Angle Restriction (VAR) element, to enable another component, such as a display panel (6), to be operated in either a wide viewing mode or a narrow viewing mode.

Abstract: In a method of transforming light, an optical film for performing the method and a display device having the optical film, an optical film includes an anisotropic film, an isotropic film, a ?/4 phase difference film and a ?/2 phase difference film. The anisotropic film having a first refractive index with respect to a first ray and a second refractive index with respect to a second ray. A refractive index of the isotropic film is substantially identical to the first refractive index. The ?/4 phase difference film delays wavelengths of the first and second rays by about ?/4. The ?/2 phase difference film delays the wavelength of the second ray by about ?/2.

Abstract: A backlight device for a liquid crystal display device includes a light source providing light; a light waveguide plate 40 guiding light from the light source, having an emitting surface, a front surface and a bottom surface, the emitting surface adjacent to the light source; a reflector arranged under the bottom surface of the light wave guide plate, reflecting light; and at least one cholesteric liquid crystal (CLC) film arranged over the front surface of the light wave guide plate, collimating light.

Abstract: An electro-optical device includes, a first substrate, a second substrate, an electrooptic material layer, an illuminating device, and a polarizing device. The electrooptic material layer is held between the first substrate and the second substrate. The illuminating device irradiates illumination light to an outer surface of the first substrate. The polarizing device is provided on the outer surface of the first substrate. The electrooptic material layer exhibits optical isotropy when no electric field is applied, and, when an electric field is applied, exhibits optical anisotropy corresponding to the magnitude of the electric field. The electrooptic material layer further has a characteristic to selectively reflect a first circularly polarized light having a first rotation direction. Light that passes through the polarizing device is a second circularly polarized light that has a second rotation direction reverse to the first rotation direction of the first circularly polarized light.

Abstract: A projection display apparatus 101 in which the light quantity adjusting means has a simple and readily interchangeable structure, and which can improve image quality by adjusting the quantity of light received by a light valve continuously, without causing illuminance irregularities, and without having unwanted light radiated onto the screen, the light quantity adjusting means 9 having light blocking members 91L, 91R for blocking light in transit to a second lens array 22, and rotational axes 91LA, 91RA for turnably supporting each of the light blocking members on an xy plane, the light blocking members 91L, 91R and rotational axes 91LA, 91RA being positioned so that the rotational axes 91LA, 91RA are disposed in positions symmetric with respect to the optical axis AX on the xy plane, and the turning range from the light blocking initiation position at which the light blocking members 91L, 91R, by being turned, start to block light in transit toward the second lens array 22 to the maximum light blocking posi

Abstract: A stereoscopic TFT-LCD with a wire grid polarizer affixed to internal surfaces substrates, applies to a LCD device having a thin polarizing film and a thin phase retardation film to display a 2D image and a 3D image, a thin film polarizing film formed by accurately processing a thin aluminum film, a polarizing film of a nano imprint lithography method that uses polymer, and a polarizing film and a liquid crystal material that form a polarizing nano material thin film by uniformly coating a polarizing nano material (TCF), wherein a 1/4 phase retardation plate is disposed at a front surface of the second transparent substrate so as to produce circularly-polarized light.

Abstract: A liquid crystal display apparatus includes a compound device, a color display device, a driver, and a control circuit. The color display device includes three liquid crystal panels. The liquid crystal display apparatus has a layered structure in which the compound device is layered on the display surface of the color display device.

Abstract: The present invention in one aspect relates to a transflective liquid crystal display (LCD) comprising a plurality of pixels. Each pixel includes a first structure defining a reflective area and a transmissive area adjacent to the reflective area, a second structure positioned apart from the first structure to define a single cell gap therebetween, a liquid crystal layer positioned in the cell gap, and a plurality of electrodes formed on one of the first structure and the second structure such that at least two electrodes are positioned in the transmissive area and define a first distance, d1, therebetween, and at least two electrodes are positioned in the reflective area and define a second distance, d2, therebetween, where d2>d1, preferably, d2=?{square root over (2)}d1.

Abstract: A liquid crystal display device includes: a liquid crystal panel; a first polarizing film and a second polarizing film on a bottom surface and a top surface, respectively, of the liquid crystal panel; a backlight unit below the first polarizing film; and a titanium oxide film on the second polarizing film and that transmits one of right-handed circularly polarized light and left-handed circularly polarized light and reflects the other, with a predetermined wavelength, of the right-handed circularly polarized light and the left-handed circularly polarized light.

Abstract: In the liquid crystal display device of the present invention, a circular polarizer is provided to each of a pair of substrates that hold a liquid crystal layer, wherein the circular polarizer on the display surface side is composed of a polarizer, ?/2 plate in which Rth>0, and a ?/4 plate in which Rth<0; and the circular polarizer on the backlight side is composed of a polarizer, a ?/2 plate in which Rth<0, and a ?/4 plate in which Rth>0. Rth is a retardation in the thickness direction of a ?/2 plate or a ?/4 plate. A reduction is achieved in the absolute value of the sum of the Rth between the ?/2 plate for which Rth>0 and the ?/2 plate for which Rth<0, and in the absolute value of the sum of the Rth between the ?/4 plate for which Rth<0 and the ?/4 plate for which Rth>0.

Abstract: Disclosed is a liquid crystal display device capable of enhancing luminance thereof, the device including a liquid crystal display panel for displaying an image; a light source for emitting light; a light guide plate for guiding the light emitted from the light source; an optical sheet above the light guide plate to enhance the efficiency of light input from the light guide plate; a polarization sheet above the optical sheet, the polarization sheet polarizing the light supplied to the liquid crystal display panel into a first polarizing direction and converting the light having a second polarizing component into the light having a first polarizing component to supply the light having the converted polarizing component into the liquid crystal display panel; and a polarizer onto the liquid crystal display panel to adjust transmittance of light transmitted through the liquid crystal display panel.

Abstract: An elliptical polarizer is provided having excellent viewing angle improving effects. The elliptical polarizer includes a polarizer, a first optical anisotropic layer, and a second optical anisotropic layer, laminated in this order. The first optical anisotropic layer satisfies the requirements of 0.8?NZ1?1.6 and 120?Re1?250 and is disposed so that the slow axis thereof is orthogonal to the absorption axis of the polarizer. The second optical anisotropic layer is a liquid crystal film having a retardation value in the plane of 30 to 150 nm with respect to a 550 nm wavelength light and fixed in a nematic hybrid alignment wherein the average tilt angle of the liquid crystal molecules of a liquid crystalline polymer exhibiting a positive optical uniaxiality, and is disposed so that the aligned direction thereof is parallel to the absorption axis of the first polarizer.

Abstract: In a liquid-crystal display, unpolarized light from a light source passes through a linear polarization separation layer and strikes a liquid-crystal cell. The liquid-crystal cell, in response to an applied electrical field, changes the direction of a director, so as to change the direction of the electrical field oscillation vector of the incident linearly polarized light by substantially 0 to 90°, this light then striking a dichroic linear polarization layer on the surface, whereby only a component coincident with the polarization transmission axis thereof is allowed to exit to the outside. The dichroic linear polarization layer transmits 50% of this incident light, and absorbs the remaining 50%.

Abstract: One embodiment of the present invention provides a display that emits circularly-polarized light. This display includes a display mechanism that emits linearly-polarized light and a layer placed in the path of the linearly-polarized light. The layer receives the linearly-polarized light on one surface, converts the linearly-polarized light to circularly-polarized light, and then emits the circularly-polarized light from another surface. By emitting circularly-polarized light, the display reduces the perceived distortion found at some angles when the display is viewed through a linearly-polarizing filter.

Abstract: The present invention provides an elliptical polarizer with excellent viewing angle characteristics. The elliptical polarizer comprises at least a first polarizer, a first optically anisotropic layer, a second optically anisotropic layer, and a third optically anisotropic layer, laminated in this order, the first optically anisotropic layer satisfying [1] 50?Re1?500, [2] 30?Rth1?750, and [3] 0.6?Rth1/Re1?1.5, the second optically anisotropic layer satisfying [4] 0?Re2?20 and [5] ?500?Rth2??30, and the third optically anisotropic layer satisfying [6] 100?Re3?180, [7] 50?Rth3?600, and [8] 0.5?Rth3/Re3?3.5, wherein Re indicates the retardation value in the plane of each optically anisotropic layer and Rth indicates the retardation value in the thickness direction of each optically anisotropic layer.

Abstract: A three-dimension display suitable for a viewer wearing a pair of eyeglasses is disclosed. The eyeglasses have two circular polarized eyeglass lenses with different polarizations. The three-dimension display includes a flat display panel, a quarter-wave plate and a patterned half-wave plate. The flat display panel has a plurality of pixels arranged in an array, wherein the flat display panel is suitable to display a linear polarized image. The quarter-wave plate is disposed between the flat display panel and the eyeglasses. The patterned half-wave plate is disposed between the flat display panel and the eyeglasses, wherein the patterned half-wave plate corresponds to a part of the pixels. The present invention also provides a fabrication method of a three-dimension display.

Abstract: Provided is a liquid crystal display device appreciating room making it possible to prevent glare or external-image-projection on the basis of external light so that persons can watch the screen of a liquid crystal display device satisfactorily. The appreciating room comprises a room, a liquid crystal display device arranged inside the room and having a liquid crystal panel 2, and a light source which lightens the inside of the room, wherein a ¼ wavelength plate 6 is arranged on the front surface side of a viewing-side polarizer 3 of the liquid crystal panel 2, the ¼ wavelength plate 6 is arranged to set the angle ? of the slow axis direction X thereof to 45±5° or 135±5° from the absorptive axis direction A of the viewing-side polarizer toward the counterclockwise direction when the ¼ wavelength plate is seen from the viewing-side, and light inside the room is any one of left-handed circularly polarized light and right-handed circularly polarized light.

Abstract: A liquid crystal display device comprises a liquid crystal display panel having a first substrate, a second substrate located opposite the first substrate with a gap between the first substrate and the second substrate, and a liquid crystal layer held between the first substrate and the second substrate, a polarizing plate located opposite the liquid crystal layer, and a polarizing reflection layer positioned opposite the polarizing plate across the liquid crystal layer and located opposite the liquid crystal layer to reflect linearly polarized light polarized in one direction parallel to a plane of the liquid crystal display panel.

Abstract: The problem to be solved is to suppress image quality degradation caused by polarizers and provide improved light fastness. To solve the above problem, the embodiment of the present invention is a liquid crystal display device. The liquid crystal display device includes a driving-side substrate 1 on which a drive transistor 5, pixel electrode 6 and orientation film are formed. The liquid crystal display device further includes an opposed-side substrate 2 on which an opposed electrode and orientation film are formed. The liquid crystal display device still further includes liquid crystal 4 filled between the pixel electrode 6 of the driving-side substrate 1 and opposed electrode of the opposed-side substrate 2. The liquid crystal display device still further includes a reflective inorganic polarizer 3 formed between the drive transistor 5 and pixel electrode 6 of the driving-side substrate 1.

Abstract: The invention concerns a film, in particular a stamping film, laminating film or sticker film, which has at least one anisotropic polymer layer of an at least partially oriented liquid crystal material. The anisotropic polymer layer has one or more first regions which form a first security feature and in which the anisotropic polymer layer has properties which linearly polarise or which rotate the direction of rotation, and one or more second regions which form a second security element and in which the anisotropic polymer layer has circularly polarising properties. The first security feature is visualised when viewed through a first polariser and the second security feature is visualised when viewed through a second polariser responsive to a different polarisation state from that of the first polariser.

Abstract: A liquid crystal display (LCD) device that is switchable between a transmissive mode and a reflective mode is provided. The LCD device includes a backlight; an active reflective polarizer which operates as a reflector that reflects incident light or as a reflective polarizer that reflects light of a first polarization and transmits light of a second polarization perpendicular to the first polarization, based on whether a magnetic field is applied; and a liquid crystal panel that modulates incident light to form images. The liquid crystal panel includes a liquid crystal layer, a first polarizer that is disposed on a rear surface of the liquid crystal layer and faces the active reflective polarizer, and a second polarizer that is disposed on a front surface of the liquid crystal layer.

Abstract: A liquid crystal module includes: a first support part for receiving and affixing ends of a plurality of lamps; an optical plate disposed above an upper surface of the first support part; a second support part for retaining the optical plate and having a lower surface above the optical plate, wherein the upper surface of the first support part or the lower surface of the second support part has a recessed portion contacting the optical plate such that a gap is formed between the optical plate, and one of the upper surface of the first support part and the lower surface of the second support part.

Abstract: Light guide spacers for backlighting a reflective display. Embodiments of the present invention are directed to a reflective display assembly for an electronic device which is disposed above a backlight device. A light guide extends through the reflective display to conduct light from the backlight device, through the reflective display, and to a top surface of the reflective display. The display assembly may be used with a handheld computer system.

Abstract: A method of manufacturing a polarizer is provided that makes it possible to manufacture a polarizer prevented from curling even when a liquid is brought into contact with a hydrophilic polymer film by being sprayed. A method of manufacturing a polarizer includes a swelling step A for swelling a hydrophilic polymer film 1 by bringing it into contact with a swelling liquid 2, a dyeing step B for dyeing the hydrophilic polymer film 1 by bringing it into contact with a dye liquid 3 containing a dichroic material, and a crosslinking/stretching step C for crosslinking the hydrophilic polymer film 1 by bringing it into contact with a crosslinking liquid 4 and further stretching it. In the method, the contact with the swelling liquid in the swelling step A is carried out in the gas phase by spraying the swelling liquid 2 onto both surfaces of the hydrophilic polymer film 1.

Abstract: It is an object of the present invention to provide a liquid crystal display panel having a high contrast ratio in a front direction. A liquid crystal panel according to an embodiment of the present invention includes: a liquid crystal cell; a first polarizing plate placed on one side of the liquid crystal cell; a second polarizing plate placed on the other side of the liquid crystal cell; and a retardation layer placed between the liquid crystal cell and the second polarizing plate. A refractive index ellipsoid of the retardation layer exhibits a relationship of n?ny>nz; and a light transmittance (T2) of the second polarizing plate is larger than a light transmittance (T1) of the first polarizing plate.

Abstract: Techniques are provided to recycle light from a backlight unit that is otherwise blocked in a reflective part of a pixel in a transflective LCD. The light is redirected into a transmissive part of the pixel and hence enhances light efficiency and luminance of the pixel. The techniques can be used in a transflective LCD that transmits light in a circularly polarized state, or a linearly polarized state.

Abstract: A projection system includes a projector that emits imaging light, a polarization screen that selectively reflects, of the imaging light, only light in a specified state of polarization, and a reflecting element placed on an optical path between the projector and the polarization screen to reflect the imaging light. The projector emits imaging light containing circularly polarized light whose state of polarization varies according to the wave range of the light, and the first and the second reflective layers in the reflecting element have polarization characteristics and reflection wave ranges corresponding to the state of polarization and the wave range of the circularly polarized light contained in the imaging light in such a manner that the state of polarization of the circularly polarized light, after being reflected from the first and the second reflective layers, is uniform irrespective of the wave range of the light.

Abstract: A wide viewing angle transflective liquid crystal display includes a retardation film and pixels positioned between first and second substrates, each pixel including a transmissive region and a reflective region. The retardation film has a phase retardation that compensates the phase retardation of a liquid crystal layer in the transmissive region for normal incident light to achieve a dark state when no data voltage is applied to the pixel. The retardation film and a liquid crystal layer in the reflective region has a phase retardation in a range between 0.22? and 0.28? with respect to normal incident light to achieve a dark state when no data voltage is applied to the pixel, ? being the wavelength of the incident light.

Abstract: A display apparatus is provided. The display apparatus is suitable for a user to view through a polarization component having a first transmittance axis. The display apparatus includes a display module, a polarizer and a biaxial half-wave plate. The polarizer has a second transmittance axis such that a light provided from the display module passes through the polarizer and is converted into a polarized light. The biaxial half-wave plate is disposed on the display module and between the polarizer and the polarization component. The biaxial half-wave plate has a slow axis arranged between the first and second transmittance axes. The polarization of the polarized light passing through the biaxial half-wave plate tends toward the first transmittance axis.

Abstract: The present disclosure relates to an organic light emitting diode (OLED) display having a mirror function to reflect external light for when the OLED display does not emit light. The organic light emitting diode display includes a substrate member, an organic light emitting element formed on the substrate member, a phase retardation plate formed on the organic light emitting element, and a selective reflective layer formed on the phase retardation plate. The selective reflective layer selectively passes some light from outside and reflects the rest.