Abstract: A liquid crystal display device includes a display section which enables color display in each of pixels, and a gradation control unit which controls a gradation level in each of the pixels. The display section includes a first white display structure which is configured to combine primary colors and to display white, and a second white display structure which is configured to include a color with a chromaticity different from a chromaticity of the primary color of the first white display structure and to display white. The gradation control unit has a first control mode in which the gradation level of each pixel is controlled by one of the first white display structure and the second white display structure, and a second control mode in which the gradation level of each pixel is controlled by a combination of the first white display structure and the second white display structure.

Abstract: An operative reflection and absorption plate including a substrate having a moth eye structure on its surface is used, whereby an absorbing status and a reflecting status can be realized without using a polarizing plate, and a display element exhibiting a bright and high contrast can be obtained.

Abstract: A liquid crystal display device includes an array substrate and a counter-substrate, a liquid crystal layer which is held between the array substrate and counter-substrate and includes a transmissive display part and a reflective display part which neighbor each other via a boundary, an alignment state of liquid crystal molecules in the liquid crystal layer being controlled by an application voltage from the array substrate and counter-substrate in the transmissive display part and the reflective display part, and control means for making an alignment direction of the liquid crystal molecules, which are present near the boundary in the reflective display part, substantially match an alignment direction of the liquid crystal molecules which are present near the boundary in the transmissive display part.

Abstract: There is disclosed a liquid crystal display panel includes a first substrate, a second substrate arranged opposite to the first substrate with a gap, a liquid crystal layer held between the first and second substrates, and a plurality of pixels formed of the first substrate, the second substrate and the liquid crystal layer, and arrayed in a direction along a plane of the first and second substrates, each pixel having a plurality of pretilt angles different from each other.

Abstract: An operative reflection and absorption plate including a substrate having a moth eye structure on its surface is used, whereby an absorbing status and a reflecting status can be realized without using a polarizing plate, and a display element exhibiting a bright and high contrast can be obtained.

Abstract: An optical sheet has an isotropic medium layer and an anisotropic medium layer. The isotropic medium layer is made of an optically isotropic medium and has a first surface and ridge-shaped projections. The projections are formed on the first surface, arranged in a first direction and extend in a second direction intersecting at right angles to the first direction. Each projection has a cross section shaped like a segment of a circle. The anisotropic medium layer is made of an optically uniaxial medium and has a second surface and groove-shaped recesses. The recesses are made in the second surface, arranged in the first direction and extend in the second direction. Each recesses has a cross section shaped like a segment of a circle. The isotropic and the anisotropic medium layers are laid one on the other, with the respective projections firmly fitted in the respective recesses.

Abstract: A liquid crystal display device includes a display section which enables color display in each of pixels, and a gradation control unit which controls a gradation level in each of the pixels. The display section includes a first white display structure which is configured to combine primary colors and to display white, and a second white display structure which is configured to include a color with a chromaticity different from a chromaticity of the primary color of the first white display structure and to display white. The gradation control unit has a first control mode in which the gradation level of each pixel is controlled by one of the first white display structure and the second white display structure, and a second control mode in which the gradation level of each pixel is controlled by a combination of the first white display structure and the second white display structure.

Abstract: A circular polarizer structure, which is included in a liquid crystal display device, includes a uniaxial third retardation plate for optical compensation of the circular polarizer structure between a first polarizer plate and a first retardation plate, the uniaxial third retardation plate having a refractive index anisotropy of nx?nz>ny. A circular analyzer structure includes a uniaxial fourth retardation plate for optical compensation of the circular analyzer structure between a second polarizer plate and a second retardation plate, the uniaxial fourth retardation plate having a refractive index anisotropy of nx?nz>ny. A variable retarder structure includes a fifth retardation plate for optical compensation of the variable retarder structure between the first retardation plate and the second retardation plate, the fifth retardation plate having a refractive index anisotropy of nx?ny>nz.

Abstract: A liquid crystal display device includes an array substrate and a counter-substrate, a liquid crystal layer which is held between the array substrate and counter-substrate and includes a transmissive display part and a reflective display part which neighbor each other via a boundary, an alignment state of liquid crystal molecules in the liquid crystal layer being controlled by an application voltage from the array substrate and counter-substrate in the transmissive display part and the reflective display part, and control means for making an alignment direction of the liquid crystal molecules, which are present near the boundary in the reflective display part, substantially match an alignment direction of the liquid crystal molecules which are present near the boundary in the transmissive display part.

Abstract: A liquid crystal display device comprises a first electrode substrate, a second electrode substrate arranged opposite to the first electrode substrate with a gap therebetween, a liquid crystal layer held between the first and second electrode substrates, and including transmissive display sections and reflective display sections adjacent to the transmissive display sections, a linear boundary being defined between each transmissive display section and each reflective display section, orientation of liquid crystal molecules in the transmissive display sections and the reflective display sections being controlled in accordance with voltages applied to the liquid crystal layer by the first and second electrode substrates, and a control section which controls an electric field generated by the applied voltages to set, substantially parallel to the boundary, the orientation of those of the liquid crystal molecules which exist in the transmissive display sections near the boundary.

Abstract: A liquid crystal display panel comprising a first electrode substrate, a second electrode substrate, and a liquid crystal layer which contains a liquid crystal composition having negative dielectric anisotropy and which is interposed between the first electrode substrate and the second electrode substrate. The first electrode substrate has pixel electrodes which are spaced apart by blank areas BL and a plurality of spacers which are arranged in the blank areas BL and set the first and second electrode substrates apart from each other by a predetermined distance. The second electrode substrate has ridge-shaped projections and flat parts. The projections are opposed to the pixel electrodes and control an inclination of an electric field applied between the first and second electrode substrates. The flat parts are integrally formed with the ridge-shaped projections and wholly contact tops of the spacers.

Abstract: An optical sheet has an isotropic medium layer and an anisotropic medium layer. The isotropic medium layer is made of an optically isotropic medium and has a first surface and ridge-shaped projections. The projections are formed on the first surface, arranged in a first direction and extend in a second direction intersecting at right angles to the first direction. Each projection has a cross section shaped like a segment of a circle. The anisotropic medium layer is made of an optically uniaxial medium and has a second surface and groove-shaped recesses. The recesses are made in the second surface, arranged in the first direction and extend in the second direction. Each recesses has a cross section shaped like a segment of a circle. The isotropic and the anisotropic medium layers are laid one on the other, with the respective projections firmly fitted in the respective recesses.

Abstract: A liquid crystal display device includes a circular polarizer structure, a circular analyzer structure and a variable retarder structure. The circular polarizer structure includes a uniaxial third retardation plate with a refractive index anisotropy of nx?ny<nz and a uniaxial fourth retardation plate with a refractive index anisotropy of nx>ny?nz, which are disposed for optical compensation of the circular polarizer structure. The circular analyzer structure includes a uniaxial fifth retardation plate with a refractive index anisotropy of nx?ny<nz and a uniaxial sixth retardation plate with a refractive index anisotropy of nx>ny?nz, which are disposed for optical compensation of the circular analyzer structure. The variable retarder structure includes a uniaxial seventh retardation plate with a refractive index anisotropy of nx?ny>nz, which is disposed for optical compensation of the variable retarder structure.

Abstract: A circular-polarization-based vertical alignment mode liquid crystal display device includes a circular polarizer structure, a variable retarder structure and a circular analyzer structure. The circular polarizer structure includes a first optical compensation layer for optical compensation thereof, the first optical compensation layer including a uniaxial retardation plate with a refractive index anisotropy of nx?ny<nz. The circular analyzer structure includes a second optical compensation layer for optical compensation thereof, the second optical compensation layer including a uniaxial retardation plate with a refractive index anisotropy of nx?ny<nz. The variable retarder structure includes a third optical compensation layer for optical compensation thereof, the third optical compensation layer including a uniaxial retardation plate with a refractive index anisotropy of nx?ny>nz.

Abstract: Provided is a liquid crystal display including an array substrate with first to third comb-shaped electrodes on a main surface thereof, a counter substrate with a common electrode that faces the first to third comb-shaped electrodes on a main surface thereof, a liquid crystal layer sandwiched between the array and counter substrates, and a color filter supported by one of the array and counter substrates and including first to third coloring layer facing the first to third comb-shaped electrodes, respectively, wherein the first comb-shaped electrode is different in shape and/or orientation from the second and third comb-shaped electrodes.

Abstract: Provided is a liquid crystal display including an array substrate with first to third comb-shaped electrodes on a main surface thereof, a counter substrate with a common electrode that faces the first to third comb-shaped electrodes on a main surface thereof, a liquid crystal layer sandwiched between the array and counter substrates, and a color filter supported by one of the array and counter substrates and including first to third coloring layer facing the first to third comb-shaped electrodes, respectively, wherein the first comb-shaped electrode is different in shape and/or orientation from the second and third comb-shaped electrodes.

Abstract: Provided is a liquid crystal display including an array substrate with first to third comb-shaped electrodes on a main surface thereof, a counter substrate with a common electrode that faces the first to third comb-shaped electrodes on a main surface thereof, a liquid crystal layer sandwiched between the array and counter substrates, and a color filter supported by one of the array and counter substrates and including first to third coloring layer facing the first to third comb-shaped electrodes, respectively, wherein the first comb-shaped electrode is different in shape and/or orientation from the second and third comb-shaped electrodes.

Abstract: There is provided a liquid crystal display including a liquid crystal display cell, a circularly polarizing device facing the liquid crystal display cell, and a quarter wave plate interposed between the liquid crystal cell and the circularly polarizing device, wherein each pixel electrode of the liquid crystal display cell includes comb-shaped conductive layers differing from each other in the longitudinal direction of the comb-teeth and electrically connected to each other.

Abstract: A liquid-crystal display device comprises an array substrate having pixel electrodes disposed on a main surface thereof, a counter substrate having a counter electrode disposed to face the pixel electrodes on the main surface of the array substrate, and a liquid-crystal layer held between the counter substrate and the array substrate. A pixel between the pixel electrode and the counter electrode is composed of four domains located around a center point of the pixel. Each of the domains includes stronger electric field regions and weaker electric field regions arranged alternately such that liquid-crystal molecules in the domains present four anisotropic alignment patterns deviated from each other by about 90°.

Abstract: Provided is a liquid crystal display including an array substrate with first to third comb-shaped electrodes on a main surface thereof, a counter substrate with a common electrode that faces the first to third comb-shaped electrodes on a main surface thereof, a liquid crystal layer sandwiched between the array and counter substrates, and a color filter supported by one of the array and counter substrates and including first to third coloring layer facing the first to third comb-shaped electrodes, respectively, wherein the first comb-shaped electrode is different in shape and/or orientation from the second and third comb-shaped electrodes.