Abstract: An MVA LCD device includes a first alignment region, a second alignment region, a third alignment region, and a fourth alignment region. The liquid crystal molecules disposed in the first alignment region have a first aligning direction, and the azimuth angle of the first aligning direction is substantially between 70 and 110 degrees. The liquid crystal molecules disposed in the second alignment region have a second aligning direction, and the azimuth angle of the second aligning direction is substantially between 160 and 200 degrees. The liquid crystal molecules disposed in the third alignment region have a third aligning direction, and the azimuth angle of the third aligning direction is substantially between 250 and 290 degrees. The liquid crystal molecules disposed in the fourth alignment region have a fourth aligning direction, and the azimuth angle of the fourth aligning direction is substantially between ?20 and 20 degrees.

Abstract: The present invention provides a self-focusing liquid crystal cell includes a first glass substrate, a upper transparent electrode, a liquid crystal layer, a lower transparent electrode and a second glass substrate. The upper transparent electrode is shaped as a semi-sphere, while the lower transparent electrode is a planar electrode. A distance between a center of the upper transparent electrode and the lower transparent electrode is smaller than that between periphery of the upper transparent electrode and the lower transparent electrode is greater; the liquid crystal layer is stuffed with negative nematic liquid crystals. The present invention also provides a liquid crystal display. The self-focusing liquid crystal cell and the liquid crystal display equipped with the liquid crystal lens controlled by applied voltage dynamically adjusts the focal length of the liquid crystal lens so as to provide the consistent variation of the gradient refractive index from all angles of view.

Abstract: Provide is an optical film which includes an optically anisotropic layer having a high-definition alignment pattern, can be readily produced, and is utility. The optical film comprising: a transparent support; an alignment film subjected to a unidirectional alignment treatment; and an optically anisotropic layer formed of one kind of composition mainly containing liquid crystal having a polymerizable group, wherein the optically anisotropic layer is a patterned optically anisotropic layer having first retardation regions and second retardation regions alternately disposed in a plane, and the first retardation regions and the second retardation regions have in-plane slow axes orthogonal to each other.

Abstract: First and second polarizers are disposed in cross-Nichol configuration. A liquid crystal cell is disposed between the two polarizers and establishes vertical alignment in a state of no voltage application. An even number of optical films having optical anisotropy and disposed between the liquid crystal cell and first polarizer. A retardation of the liquid crystal cell is in a range between 300 nm and 1500 nm; and each optical film satisfies nx>n?z, an in-plane retardation is smaller than 300 nm, a thickness direction retardation is in a range between 50 nm and 300 nm, an angle between an in-plane slow axis of the optical film disposed nearest to the first polarizer and an absorption axis of the first polarizer is smaller than 45°, and the slow axes of mutually adjacent optical films are perpendicular to each other.

Abstract: Disclosed is an organic light emitting display device to prevent deterioration of visibility caused by reflection of incident light and color transition at high viewing angle, and improve transmittance, the organic light emitting display device includes an organic light emitting display panel, and an antireflective member adhered to an outer surface of the organic light emitting display panel, the antireflective member including a reactive liquid crystal layer and a polarizer film which are laminated in this order, wherein the reactive liquid crystal layer has a ?/4 retardation with respect to a transmitted light of the polarizer film.

Abstract: A dual mode LCD device includes first and second substrates facing each other; a first electrode on an inner surface of the first substrate and having a plate shape; a first insulating layer on the first electrode; a second electrode and a third electrode on the first insulating layer, being spaced apart from each other and extending along a first direction; a fourth electrode on an inner surface of the second substrate; and a liquid crystal layer interposed between the first and second substrates and including chiral dopants, wherein liquid crystal molecules of the liquid crystal layer are stably arranged in a first twist state and a second twist state, wherein the first and second twist states are used for a memory mode and the second twist state and a vertical alignment state are used for a dynamic mode.

Abstract: The present invention provides a liquid-crystal display device that can achieve high contrast ratios in a wide range of viewing angles and reduce coloration during black display.

Abstract: A liquid crystal display device that has a higher contrast ratio in a wide viewing angle and that can be easily produced at low cost. The liquid crystal display device may include polarizers and multiple birefringent layers. A first birefringent layer (I) can have an in-plane slow axis forming an angle of about 45° with an absorption axis of the first polarizer; the second birefringent layer (I) can have an in-plane slow axis substantially orthogonal to the in-plane slow axis of the first birefringent layer (I).

Abstract: The liquid crystal display comprises a first substrate including a first pixel electrode and a second pixel electrode, a second substrate with an opposed electrode formed on, and a liquid crystal layer sealed between the first substrate and the second substrate. The thickness d1 of the liquid crystal layer on the first pixel electrode in the first pixel region is larger than the thickness d2 of the liquid crystal layer on the second pixel electrode in the second pixel region. The first pixel region includes a first partial region and a second partial region where the threshold voltage is higher than in the first partial region. The second pixel region includes a third partial region and a fourth partial region where the threshold voltage is higher than in the third partial region.

Abstract: First and second polarizers are disposed in cross Nichol configuration. A liquid crystal cell is disposed between the two polarizers and establishes vertical alignment in a state of no voltage application. An even number of optical films having optical anisotropy and disposed between the liquid crystal cell and first polarizer. A retardation of the liquid crystal cell is in a range between 300 nm and 1500 nm; and each optical film satisfies nx>ny?nz, an in-plane retardation is smaller than 300 nm, a thickness direction retardation is in a ranger between 50 nm and 300 nm, an angle between an in-plane slow axis of the optical film disposed nearest to the first polarizer and an absorption axis of the first polarizer is smaller than 45°, and the slow axes of mutually adjacent optical films are perpendicular to each other.

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: The present invention provides a liquid crystal display device comprising: a first polarizer; a second polarizer; a liquid crystal cell; a first birefringent layer; and a second birefringent layer, the second polarizer having an absorption axis orthogonal to an absorption axis of the first polarizer, the liquid crystal cell being disposed between the first polarizer and the second polarizer, the first birefringent layer being disposed between the first polarizer and the liquid crystal cell, satisfying 0.6?Nz(550)?6, and having an in-plane slow axis orthogonal to the absorption axis of the first polarizer, the second birefringent layer being disposed between the liquid crystal cell and the second polarizer, satisfying ?5?Nz(550)?0.4, and having an in-plane slow axis parallel to the absorption axis of the second polarizer, and at least one of the first and second birefringent layers satisfying |Rxy(450)|?|Rxy(550)|?|Rxy(650)|.

Abstract: A liquid crystal display device of an in-plane switching mode comprises at least optically anisotropic members (A) and (B) and a liquid crystal cell disposed between a pair of polarizers having absorption axes disposed approximately perpendicularly to each other, wherein nzA>nyA and nxB>nzB (nxA, nxB: refractive indices (n) in the direction of the in-plane slow axis; nyA, nyB: n in the in-plane direction perpendicular to the above direction; nzA, nzB: n in the direction of thickness, each at 550 nm); the in-plane slow axes of (A) and (B) are approximately parallel or perpendicular to each other; and the in-plane slow axis of (A) is approximately parallel or perpendicular to the absorption axis of a polarizer closer to (A). The antireflection property, scratch resistance and durability are excellent, the angle of field is wide, and uniform display of images with great contrast can be achieved at any angle of observation.

Abstract: Disclosed is an optical film that is manufactured by using longitudinal and uniaxial stretching of an unstretched cycloolefin copolymer film and has an in-plane retardation of 100 to 150 nm and a thickness retardation of 0 to ?30 nm at a wavelength of 550 nm, a polarizing plate and a liquid crystal display including the same, and a method of manufacturing the optical film. The method includes longitudinally and uniaxially stretching the unstretched film while a ratio of a width to a length of a stretched portion of the film is controlled.

Abstract: An LCD apparatus includes a first polarizer, a half-wavelength retardation plate, a liquid crystal unit and a second polarizer. The LCD apparatus further has a backlight module for generating first polarized light. The first polarizer is disposed downstream of the backlight module, and the first polarizer has a transmission axis. The half-wavelength retardation plate is disposed between the backlight module and the first polarizer. Second polarized light parallel to the transmission axis is generated from the first polarized light passing through the half-wavelength retardation plate. The second polarizer is disposed downstream of the first polarizer. The liquid crystal unit is disposed between the first polarizer and the second polarizer, and the second polarized light emits out of the LCD apparatus through the first polarizer, the liquid crystal unit and the second polarizer.

Abstract: The present invention is directed to the provision of an optical pickup apparatus in which a liquid crystal optical element constructed by combining an aberration correcting liquid crystal panel and a ?/4 liquid crystal panel in an integral fashion is mounted in a tilted position. More particularly, the invention provides a liquid crystal optical element comprising a first liquid crystal layer for correcting aberration, a second liquid crystal layer functioning as an n?/4 plate and combined in an integral fashion with the first liquid crystal layer, a transparent electrode for generating a potential difference on the second liquid crystal layer in order to control an amount of phase difference for the light beam passing through the second liquid crystal layer, and a driver for driving the transparent electrode so as to generate a potential difference that is the lowest among a plurality of potential differences that cause the second liquid crystal layer to function as an n?/4 plate.

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: One or more embodiments of the present invention provide apparatuses, methods and systems to form a thin LED backlight unit for a large-screen flat-panel display. The backlight unit is able to achieve improved color mixing within a shorter mixing distance than the conventional art, while maintaining desired brightness uniformity, thereby allowing for a shorter bezel of a display device. One or more embodiments of the present invention include one or more light guides, which, by operating together, provide thin backlight units. High system efficiency is provided by introducing a recycling enhancement component, and uniform color distribution is achieved by incorporating color shift compensation. Multiple light guides are arranged adjacent to one another can offer a progressive scan illumination feature.

Abstract: A liquid crystal display having improved retardation plate is described. In the liquid crystal display, at least one of two panel plates has a polarizer placed on an outer side which is opposite to a liquid crystal layer and a quarter wavelength retardation plate between a substrate glass and the polarizer. The quarter wavelength retardation plate is composed of two retardation films including a half wavelength and a quarter wavelength retardation film. A slow axis of a half ? film which is adjacent to the polarizer makes an angle of ?1 with a transmissive axis of the polarizer and that of a quarter ? film which is adjacent to the substrate glass makes an angle of ?2 where ?2=2×?1±45 degree. The retardation films are single-axial films. The specific angle ?1 is one of degree values (15, 75, 105, and 165).

Abstract: The invention relates to a liquid crystal display device comprising a retardation layer wherein an in-plane slow axis of the retardation layer is within the direction of 90±40 degrees relative to an absorption axis of the polarizing layer disposed at a closer position to the retardation layer; Re(550) meets following relation, 25 nm?Re(550)?230 nm; R[40°] of the retardation layer which is measured for incident light in a direction tilted by 40 degrees toward the tilt direction of the retardation layer relative to the normal line of the retardation layer meets following relation, 0 nm?R[40°]?300 nm; and R[+40°] of the retardation layer and retardation R[?40°] of the retardation layer meet following relation, 1<R[+40°]/R[?40°].

Abstract: A liquid crystal display device uses a first quarter-wave retardation film and a hybrid aligned nematic film to reduce light leakage in dark state for reaching high contrast ratio, and uses multiple-gamma IC to provide different gamma-curve signals for pixels of different colors to solve color shift problem. In addition, the liquid crystal display device may use a second quarter-wave retardation film to reduce light leakage when viewed in a wide angle so as to further provide higher contrast ratio.

Abstract: A liquid-crystal display device comprising a liquid-crystal cell, a first polarizing element and a second polarizing element disposed on either side of the liquid-crystal cell respectively, a first retardation layer between the first polarizing element and the liquid-crystal cell, and a second retardation layer between the second polarizing element and the liquid-crystal cell, wherein a transmission axis of the first polarizing element is perpendicular to the slow axis of the first retardation layer; and a transmission axis of the second polarizing element is parallel to the slow axis of the second retardation layer; and the first retardation layer and the second retardation layer satisfy the formula (1) 0 nm<?Re1(548)??Re2(548)?50 nm.

Abstract: A view angle controlling LCD comprises a first panel part that has a first group of electrodes and a first liquid crystal layer driven by a first vertical electric field. The first group of electrodes includes a pixel electrode and a common electrode to generate the first vertical electric field. The view angle controlling LCD device further comprises a second panel part deposited on the first panel part that has a second group of electrodes and a second liquid crystal layer panel driven to have slope angle from the horizontal alignment condition by a second vertical electric field. The second group of electrodes includes a first electrode and a second electrode to generate the second vertical electric field.

Abstract: This invention provides a vertically aligned liquid crystal display, including a first polarizing plate and a second polarizing plate having absorption axes perpendicular to each other and a vertically aligned panel provided therebetween and including vertically aligned liquid crystals having negative dielectric anisotropy, in which a +A-film and a +C-film are provided between the first polarizing plate and the vertically aligned panel, the +C-film is positioned between the first polarizing plate and the +A-film, and the optic axis of the +A-film is parallel to or perpendicular to the absorption axis of the first polarizing plate. According to this invention, the contrast of the vertically aligned liquid crystal display can be improved at surface-facing angle and tilt angle thereof and the color shift depending on the viewing angle in a dark state can be minimized, thus greatly increasing the viewing angle range of the vertically aligned liquid crystal display.

Abstract: An ECB-mode liquid crystal display device having a pair of substrates 9 and 12, a liquid crystal layer 11, a pair of polarizing plates (1,3,5) (16,18,20) and at least one optically anisotropic layer 7 and/or 14, wherein they are disposed such that the absorption axes 4 and 19 of the polarizing films 3 and 18 in the polarizing plates are parallel or vertical to the left-rightward direction of the screen of the display device. The orientation axes 10 and 13 of the substrates 9 and 12 and the orientation axes 8 and 15 of the optically anisotropic layers 7 and 14 preferably cross the absorption axes 4 and 19 of the polarizing films 3 and 18 of the adjacent polarizing plates at an angle of 45°.

Abstract: A light shield sized to engage over a major portion of a display to substantially inhibit light from reaching a region between the light gathering element and the display. An optical coupling element is associated with the light gathering element to direct light emanating from the display to a light sensitive element in order to determine corrective data to reduce mura effects.

Abstract: A liquid-crystal display device comprising a liquid-crystal cell, a first polarizing element and a second polarizing element disposed on either side of the liquid-crystal cell respectively, a first retardation layer between the first polarizing element and the liquid-crystal cell, and a second retardation layer between the second polarizing element and the liquid-crystal cell, wherein a transmission axis of the first polarizing element is perpendicular to the slow axis of the first retardation layer; and a transmission axis of the second polarizing element is parallel to the slow axis of the second retardation layer; and the first retardation layer and the second retardation layer satisfy the formula (1) 0 nm<?Re1(548)??Re2(548)?50 nm.

Abstract: An optical film for a multi-domain VA mode liquid crystal cell, capable of improving a luminance of white display at a low cost without reducing a display quality. The optical film 10 used for a multi-domain VA mode liquid crystal cell includes a transparent polymer film 11, a polarizer 12, and an optical compensation layer 14 laminated in this order. The optical film 10 further includes a ?/4 plate 13. The ?/4 plate 13 is arranged between the polarizer 12 and the optical compensation layer 14, and an angle between an absorption axis of the polarizer 12 and a slow axis of the ?/4 plate is set in the range of 45°±5°.

Abstract: A liquid crystal display device including first and second substrates sandwiching a liquid crystal layer of positive dielectric anisotropy; a first polarizer adjacent the first substrate, with a first gap between the first polarizer and the first substrate; and a second polarizer adjacent the second substrate, with a second gap between the second polarizer and the second substrate. At least one of the first and second gaps includes an optically biaxial retardation film. The first and second polarizers are disposed such that optical absorption axes of the two polarizers cross each other perpendicularly. An in-plane retardation axis of the retardation film is oriented generally perpendicular with the optical absorption axis of the polarizer that is disposed at the same side of the retardation film with regard to the liquid crystal layer.

Abstract: The present invention provides a laminated optical film capable of contributing to thinning of each of a liquid crystal panel and a liquid crystal display apparatus and of simplifying its manufacturing steps, and a method of manufacturing the laminated optical film. The laminated optical film is used in a liquid crystal display apparatus and arranged on a viewer side of a liquid crystal cell. The laminated optical film includes: a polarizer; and a retardation layer which is arranged on one side of the polarizer, has a refractive index ellipsoid showing a relationship of nx>ny=nz, and has an in-plane retardation value Re[590] of 90 to 190 nm. An angle formed between an absorption axis of the polarizer and a slow axis of the retardation layer is 5 to 85°. The retardation layer is formed of a liquid crystal material, and the retardation layer is arranged to be closer to the viewer side than the polarizer is.

Abstract: A normally-black mode liquid crystal display includes a first and a second transparent substrate facing to each other, a liquid crystal layer, a first and a second polarizer, a first and a second half wave plate, and a first and a second positive C plate. The liquid crystal layer is interposed between the first and the second transparent substrate. The first polarizer is disposed on a side of the first transparent substrate opposite the liquid crystal layer, while the second polarizer is disposed on a side of the second transparent substrate opposite the liquid crystal layer. The first half wave plate is provided between the first transparent substrate and the first polarizer, and the second half wave plate is provided between the second transparent substrate and the second polarizer. The first positive C plate is disposed between the first half wave plate and the first transparent substrate, and the second positive C plate is disposed between the second half wave plate and the second transparent substrate.

Abstract: The present invention provides a liquid crystal display device comprising a liquid crystal layer sandwiched between an upper substrate and a lower substrate having a twist angle in the range of about 40 to 65 degrees and a light diffusive reflective electrode having recesses and projections provided on the lower substrate wherein a product of the height of the recesses and projections and a birefringence of the liquid crystal layer is in the range of about 10 to 53 nm at the twist angle of about 40 degrees and about 10 to 64 nm at the twist angle of about 65 degrees, respectively.

Abstract: A view angle controlling LCD comprises a first panel part that has a first group of electrodes and a first liquid crystal layer driven by a first vertical electric field. The first group of electrodes includes a pixel electrode and a common electrode to generate the first vertical electric field. The view angle controlling LCD device further comprises a second panel part deposited on the first panel part that has a second group of electrodes and a second liquid crystal layer panel driven to have slope angle from the horizontal alignment condition by a second vertical electric field. The second group of electrodes includes a first electrode and a second electrode to generate the second vertical electric field.

Abstract: A liquid crystal display having improved retardation plate is described. In the liquid crystal display, at least one of two panel plates has a polarizer placed on an outer side which is opposite to a liquid crystal layer and a quarter wavelength retardation plate between a substrate glass and the polarizer. The quarter wavelength retardation plate is composed of two retardation films including a half wavelength and a quarter wavelength retardation film. A slow axis of a half ? film which is adjacent to the polarizer makes an angle of ?1 with a transmissive axis of the polarizer and that of a quarter ? film which is adjacent to the substrate glass makes an angle of ?2 where ?2=2×?1±45 degree. The retardation films are single-axial films. The specific angle ?1 is one of degree values (15, 75, 105, and 165).

Abstract: A display apparatus includes a liquid crystal element that has a liquid crystal layer sealed in a space between a first substrate and a second substrate arranged face to face, a protective plate that is disposed so that the first substrate intervenes between the protective plate and the second substrate, a first polarizing plate that is disposed between the protective plate and the first substrate to be in close contact with the protective plate, and a first quarter-wavelength retardation plate that is disposed between the first substrate and the first polarizing plate to be in close contact with the first polarizing plate. The protective plate is greater in area than the first substrate. The first polarizing plate has an absorption axis and the first quarter-wavelength retardation plate has a slow axis in a direction intersecting with the absorption axis of the first polarizing plate at an angle of 45°.

Abstract: A liquid crystal display device uses a first quarter-wave retardation film and a hybrid aligned nematic film to reduce light leakage in dark state for reaching high contrast ratio, and uses multiple-gamma IC to provide different gamma-curve signals for pixels of different colors to solve color shift problem. In addition, the liquid crystal display device may use a second quarter-wave retardation film to reduce light leakage when viewed in a wide angle so as to further provide higher contrast ratio.

Abstract: An IPS-mode liquid-crystal display apparatus for controlling transmission and cutoff of light by applying a cross-directional electric field to liquid-crystal molecules horizontally oriented reduces diagonal luminance rise and coloring at the time of black display by a simple configuration. A configuration is used in which an optical phase compensation member for canceling the double refraction property of a polarization-plate support base material is provided between the liquid-crystal-layer-side support base material of a lower polarizer and a liquid-crystal layer. Or, a configuration is used in which the optical phase compensation for canceling double refraction property of the polarization-plate support base material is provided between the liquid-crystal-layer-side support base material and the liquid-crystal layer.

Abstract: A circularly polarizing plate includes a ?/4 phase difference plate and a linearly polarizing plate overlaid on a main surface of the ?/4 phase difference plate and having an absorption axis forming an angle of about 45° with respect to a lagging axis of the ?/4 phase difference plate. The ?/4 phase difference plate has reverse wavelength dispersion characteristics and an Nz coefficient of 1.6 or more. Employment of this structure can provide the circularly polarizing plate having good view angle characteristics and a vertical alignment type of liquid crystal display panel having the same.

Abstract: The invention relates to a liquid crystal display device comprising a retardation layer wherein an in-plane slow axis of the retardation layer is within the direction of 90±40 degrees relative to to an absorption axis of the polarizing layer disposed at a closer position to the retardation layer; Re(550) meets following relation, 25 nm?Re(550)?230 nm; R[40°] of the retardation layer which is measured for incident light in a direction tilted by 40 degrees toward the tilt direction of the retardation layer relative to the normal line of the retardation layer meets following relation, 0 nm?R[40°]?300 nm; and R[+40°] of the retardation layer and retardation R[?40°] of the retardation layer meet following relation, 1<R[+40°]/R[?40°].

Abstract: A liquid crystal display device of an in-plane switching mode comprises at least optically anisotropic members (A) and (B) and liquid crystal cell disposed between a pair of polarizers having absorption axes disposed approximately perpendicularly to each other, wherein nzA>nyA and nxB>nzB (nxA, nxB:refractive indices (n) in the direction of the in-plane slow axis; nyA, nyB:n in the in-plane direction perpendicular to the above direction; nzA, nzB:n in the direction of thickness, each at 550 nm); the in-plane slow axes of (A) and (B) are approximately parallel or perpendicular to each other; and the in-plane slow axis of (A) is approximately parallel or perpendicular to the absorption axis of a polarizer closer to (A). The antireflection property, scratch resistance and durability are excellent, the angle of field is wide, and uniform display of images with great contrast can be achieved at any angle of observation.

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 method for producing an optical film comprising leading a melt of a composition containing a thermoplastic resin to pass between a first nip-pressing surface and a second nip-pressing surface of a nip-pressing unit whereby the melt is continuously nippressed therebetween to form a film, wherein the nip-pressing unit applies a pressure of from 20 to 500 MPa to the melt, and the first nip-pressing surface moves at a higher speed than the second nip-pressing surface.

Abstract: An optical element of the invention comprises at least two laminated layers of reflective polarizer; and at least one retardation layer for changing polarization properties laminated between the reflective polarizers, the combination of the layers being designed so as to provide a incident-light transmittance depending on an incident angle of an incident light and designed such that a shielded light is not absorbed but reflected. The optical element can effectively shield transmitted lights with respect to obliquely incident lights and can control coloring.

Abstract: An optical element of the invention comprises at least two laminated layers of reflective polarizer; and at least one retardation layer for changing polarization properties laminated between the reflective polarizers, the combination of the layers being designed so as to provide a incident-light transmittance depending on an incident angle of an incident light and designed such that a shielded light is not absorbed but reflected. The optical element can effectively shield transmitted lights with respect to obliquely incident lights and can control coloring.

Abstract: A liquid crystal panel including a liquid crystal cell having an improved contrast ratio in an oblique direction and an improved color shift in an oblique direction is provided. A liquid crystal panel according to the present invention includes: a liquid crystal cell; a first polarizer arranged on one side of the liquid crystal cell; a second polarizer arranged on another side of the liquid crystal cell; a negative C plate and a negative A plate arranged between the liquid crystal cell and the first polarizer; and an isotropic optical element arranged between the liquid crystal cell and the second polarizer. The negative C plate is arranged between the first polarizer and the negative A plate.

Abstract: The present invention relates to a liquid crystal display, which comprises: a lower substrate having a reflective electrode; a lower alignment film formed on the lower substrate; an upper substrate having a color filter and disposed opposite to the lower substrate; an upper alignment film formed on the 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 serving to convert linearly polarized light into circularly polarized light; and a polarizer adhered on the phase compensation film and serving to convert natural light into linearly polarized light. 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.

Abstract: The invention relates to a transflective liquid crystal display device that has a high contrast ratio. The transflective liquid crystal panel includes a homogeneous liquid crystal such that the transflective liquid crystal display device will have an optical retardation when the voltage is applied. Therefore, in order to compensate the optical retardation caused by this liquid crystal, a thickness of the liquid crystal layer is adjusted. Moreover, a thickness of the retardation film is also adjusted. Accordingly, the complete dark state and the high contrast ratio are achieved in the liquid crystal display.

Abstract: An IPS mode liquid crystal display comprising a liquid crystal cell, an optical film (F1) provided on a cell substrate on one side of the liquid crystal cell and comprises a polarizing plate comprising a transparent protective film having an in-plane retardation Re 10 nm or less and a thickness direction retardation Rth in the range of from 30 to 100 nm, a retardation film having an Nz value in the range of from 0.3 to 0.7 and an in-plane retardation Re1 in the range of from 200 to 300 nm, and an optical film (F2) provided on a cell substrate on the other side of the liquid crystal cell and comprises the polarizing plate and a retardation film having an Nz value in the range of from 0.9 to 1.2 and an in-plane retardation Re2 in the range of from 150 to 280 nm, and the absorption axes of the polarizing plates of the optical film (F1) and the optical film (F2) are perpendicular to each other, and both films are disposed so that the retardation film sides face the liquid crystal cell.

Abstract: A liquid crystal display apparatus, provided with liquid crystal compensation plates and ?/4 plates on both sides of a liquid crystal cell, in a sequence that the liquid crystal compensation plates, then the ?/4 plates. Further provided is Rth compensation film between the ?/4 plate and linear polarization film. Set substantially at zero is a retardation Rth1 in a perpendicular direction in a range from the linear polarization films to the ?/4 plates, excluding the ?/4 plates. This gives a retardation (in a perpendicular direction) for optically compensating the liquid crystal cell a closer position to the liquid crystal cell. As a result, a broad angle of visibility can be maintained, without losing a balance between viewing angle characteristics from the above position (or the bottom position) and those from the right position (or the left position), while it is possible to prevent contrast ratio in a front direction from being lowered. Therefore, an LCD having good display quality can be realized.