35results about How to "Improve viewing angle dependence" patented technology

The present invention relates to liquid-crystalline media (LC media) having negative or positive dielectric anisotropy, comprising a low-molecular-weight component and a polymerizable component. The polymerizable component comprises self-aligning, polymerizable mesogens (polymerizable self-alignment additives) which effect homeotropic (vertical) alignment of the LC media at a surface or the cell walls of a liquid-crystal display (LC display). The invention therefore also encompasses LC displays having homeotropic alignment of the LC medium without alignment layers. The invention discloses novel structures for self-alignment additives which have a certain position of the functional groups.

A novel method of producing an optical film is disclosed. The method comprises steps (1) to (3) in this order: (1) preparing, on a surface of an alignment film, a layer of a polymerizable composition comprising a polymerizable liquid crystal compound and a dichroic polymerization initiator; (2) aligning molecules of said polymerizable liquid crystal compound in said layer in a first alignment state; and (3) irradiating said layer with polarized ultraviolet light to carry out polymerization of said polymerizable liquid crystal compound and fix molecules of said polymerizable liquid crystal compound in a second alignment state thereby to form an optically anisotropic layer, wherein a percentage of polarized ultraviolet light having an extinction ratio ranging from 1 to 8 is not greater than 15% with respect to an energy density of polarized ultraviolet light per unit area (J / cm2).

An easy process of producing a substrate for liquid crystal display device, which contribute to reducing the viewing angle dependence of color of a liquid crystal display device, which comprises the following steps [1] and [2] in this order: [1] subjecting a substrate having at least one optically anisotropic layer and at least one photosensitive polymer layer on a support to light exposure; [2] removing partial or entire part of the optically anisotropic layer and the photosensitive polymer layer by a physical mean.

A novel optical compensation film is disclosed. The optical compensation film comprises a first optically anisotropic layer and a second optically anisotropic layer, each of which formed of a composition comprising a liquid-crystalline compound, wherein molecules of the liquid-crystalline compound in each of the first and second optically anisotropic layers are fixed in a hybrid alignment state in which tilt angles of the molecules with respect to a layer plane varies in a thickness direction.

An optical resin film is provided, in which a wavelength dispersion of a retardation in planar direction and a wavelength dispersion of a retardation in thickness direction are independently controlled, is provided and has at least an additive having a negative intrinsic birefringence.

An additive is fed in a tube which is connected to a pipe for feeding a polymer solution, and a nozzle is provided in a front end of the tube. On a front end of the nozzle, a slit like slit is formed so as to extend in a diameter direction of the pipe. The front end is almost perpendicular to an upstream end of the nearest element of a static mixer. When the additive is added to the polymer solution through the slit, the additive is separated enough from a forward side of the static mixer, and the addition is made without rotation of the additive. Thus the mixing and stirring of the polymer solution and the additive is effectively made.

Provided is a liquid crystal display device of VA mode having an excellent display quality. The liquid display device includes a pixel region having a first liquid crystal domain as a first direction, a second liquid crystal domain as a second direction, a third liquid crystal domain as a third direction, and a fourth liquid crystal domain as a fourth direction in which the tilt direction when voltage applied is decided in advance. The first, the second, the third, and the fourth directions are four directions, any two of which have direction difference of substantially 90 degrees multiplied by an integer. Moreover, the first, the second, the third, and the fourth liquid crystal domains are adjacent to other liquid crystal domains and are arranged in a matrix of two rows and two columns. A drain-extracting wire constitutes at least a part of a central light shielding portion for selectively light-shielding the boundary regions where each of the first, the second, the third, and the fourth liquid crystal domains is adjacent to the other liquid crystal domains. Moreover, at least one island-shaped light-shielding portion formed by the same layer as a gate bus line has a portion superimposed on the drain-extracting wire via a gate insulating film.

The invention relates to a producing process for microfined organic pigment, a microfined organic pigment and a microfined organic pigmet coloring composition. the problem to be addressed is to provide a producing method for obtaining microfined organic pigment which can be applied on the coloring film of the liquid crystal television with low lantency, excellent view angle dependency, high transparency, a microfined organic pigment produced thereby, and microfined organic pigment coloring composition using the microfined organic pigment. The invention solves the problem by the producing process of the microfined organic pigment, which is characterized in that an organic pigment, a water-soluble inorganic salt, a water-soluble organic solvent and a resin (A) are mechanically compounded toobtain a compounding composition, then the water-soluble inorganic salt and the water-soluble organic solvent are removed by water, wherein the resin (A) has solubility of over a weight part with respect to 100 weight parts of water-soluble organic solvent under 25 DEG C., and containing an amino group and / or a quaternary ammonium cations.

A novel transfer material is disclosed. The transfer material comprises, at least, a support, and, thereon, an optically uniaxial or biaxial anisotropic layer and a photosensitive polymer layer. A novel process for producing a liquid crystal cell substrate is also disclosed. The process comprises, at least, [1] laminating a transfer material as set forth in any one of claims 1 to 11 on a substrate; [2] removing the support from the transfer material laminated on the substrate; and [3] exposing the photosensitive polymer layer disposed on the substrate to light.

Disclosed are liquid-crystalline media (LC media) comprising a low-molecular-weight component and a polymerisable component. The polymerisable component contains self-aligning, polymerisable mesogens(polymerisable self-alignment additives) which effect homeotropic (vertical) alignment of the LC media at a surface or the cell walls of a liquid-crystal display (LC display). Disclosed are also LC displays having homeotropic alignment of the LC medium without alignment layers. Further disclosed are the structures for polymerisable self-alignment additives.

The present invention provides a display which can improve viewing angle dependency of a contrast ratio at least in a specific azimuth without design change of a basic structure of a display element, limitation to white display state or black display state, and deterioration in display quality in other directions. The above-mentioned display is a display comprising: a display element with a contrast ratio dependent on a viewing angle; and an anisotropic scattering film having an anisotropic scattering layer, wherein the anisotropic scattering film is located on a viewing screen side of the display element and has a scattering central axis in substantially the same azimuth as an azimuth in which a contrast ratio of the display element in a direction inclined by a certain angle from a normal direction of a viewing screen of the display element has an extreme value.

A liquid crystal display device of the present invention is provided with: an array substrate (10) in which a pixel electrode (41), a TFT (20), and a storage capacitor element (30) are provided for each pixel (P); an opposite substrate (50) in which a plurality of common electrodes (59A, 59B) are provided for each pixel (P); a liquid crystal layer (81); and a driver circuit (4) that dividedly drives the liquid crystal layer (81) of each pixel (P) through each of the common electrodes (59A, 59B) by supplying a predetermined potential to each pixel electrode (41) and supplying different potentials to the respective common electrodes (59A, 59B) in each pixel (P). The liquid crystal display device according to the present invention has improved viewing angle dependency of the gamma characteristics, while increasing the aperture ratio of each pixel.

An optical film, comprising a first phase contrast film (2) having a requirement of (ne - no > 0) where an average refractive index in the surface of at least one sheet of film is (no) and a refractive index in the thickness direction thereof is (ne) and a second phase contrast film (3) having a requirement of (nx > ny > / = nz) where a refractive index in the surface of at least one sheet of film in the direction providing the maximum refractive index is (nx), a refractive index in the direction perpendicular to that direction is (ny), and a refractive index in the thickness direction thereof is (nz), wherein both films are laminated with each other, whereby, when the absorbing axis directions of a polarizing plate are disposed perpendicular to each other, the leakage of light occurred when an observing direction is tilted from a front in a direction different from the absorbing axis directions can be reduced.

First and second data signal lines (S1, s1) are provided correspondingly to one row of pixels, four sub-pixels (1a to 1d) connected to the same scanning signal line (e.g., G1) are included in a pixel (P) to which two storage capacitor lines (Cs1, Cs2) correspond. Two sub-pixels (1a, 1c) of the pixel (P) form the capacitor with one (Cs1) of the two storage capacitor lines. One (1a) of the sub-pixels is connected to the first data signal line (S1) and the other (1c) is connected to the second data signal line (s1). The remaining two sub-pixels (1b, 1d) form the capacitor with the other (Cs2) of the two storage capacitor lines. One (1b) of the sub-pixels is connected to the first data signal line (S1) and the other (1d) is connected to the second data signal line (s1). With the configuration, the four sub-pixels arranged in one pixel are controlled to different luminance levels to allow gradation display.

A novel transparent film is disclosed. Re (lambda) and Rth (lambda) of the film defined by the following formulae (I) and (II) satisfy the following formulae (III) and (IV):(I) Re (lambda) = (nx - ny) x d,(II) Rth (lambda) = {(nx + ny) / 2 - nz} x d, (III) <= 0 <= || Re (630) || <= 50, (IV) Rth (400) x Rth (700) <= 0, and <= 0 || Rth (700) - Rth (400) || <= 150,wherein Re (lambda) means an in-plane retardation value at a wavelength lambda nm (unit: nm); Rth (lambda) means a thickness-direction retardation value at a wavelength lambda nm (unit: nm); nx means a refractive index in the in-plane slow-axis direction; ny means a refractive index in the in-plane fast-axis direction; nz means a refractive index in the film thickness direction; and d means a thickness of the film.

The invention discloses a novel transparent film. Re(λ) and Rth(λ) defined by the following formulas (I) and (II) of the film satisfy the following formulas (III) and (IV): (I) Re(λ)=(nx-ny)xd , (II) Rth(λ)={(nx+ny) / 2-nz}xd, (III)0≤|Re(630)|≤50, (IV)Rth(400)x Rth(700)≤0 , and 0≤|Rth(700)-Rth(400)|≤150, wherein, Re(λ) refers to the in-plane retardation value (unit: nm) under the wavelength λnm; Rth(λ) refers to the in-plane retardation value under the wavelength λnm Retardation value in the thickness direction (unit: nm); nx refers to the refractive index in the direction of the slow axis in the plane; ny refers to the refractive index in the direction of the fast axis in the plane; nz refers to the refractive index in the direction of the film thickness; and d refers to the Thickness of the film.

A substrate for liquid crystal display device which can provide a vertically-aligned (VA)-mode liquid crystal display device having a good viewing angle dependence of contrast and at the same time can keep the production process as simple as possible is provided: a substrate for liquid crystal display device having a smoothing layer, the smoothing layer being a negative uniaxial optically anisotropic layer having an optical axis in the direction normal to the substrate surface, particularly the substrate for liquid crystal display device having a color filter layer and / or an electrode, and the negative uniaxial optically anisotropic layer having an optical axis in the direction normal to the substrate surface being directly provided on the color filter layer or the electrode.

Liquid-crystalline media (LC media) comprising self-aligning mesogens (self-alignment additives) which effect homeotropic (vertical) alignment of the LC media at a surface or the cell walls of a liquid-crystal display (LC display). The self-alignment additives contain five-ring systems. LC displays having homeotropic alignment of the liquid-crystalline medium (LC medium) without conventional alignment layers are provided.

A liquid crystal display device of the present invention is provided with: an array substrate (10) in which a pixel electrode (41), a TFT (20), and a storage capacitor element (30) are provided for each pixel (P); an opposite substrate (50) in which a plurality of common electrodes (59A, 59B) are provided for each pixel (P); a liquid crystal layer (81); and a driver circuit (4) that dividedly drives the liquid crystal layer (81) of each pixel (P) through each of the common electrodes (59A, 59B) by supplying a predetermined potential to each pixel electrode (41) and supplying different potentials to the respective common electrodes (59A, 59B) in each pixel (P). The liquid crystal display device according to the present invention has improved viewing angle dependency of the gamma characteristics, while increasing the aperture ratio of each pixel.

A film comprising a propylene-based random or block copolymer. It is useful as a raw film for obtaining retardation films through stretching. The copolymer constituting the film has crystals comprising smectic crystals, the proportion of the smectic crystals to all crystals in the copolymer being 90% or higher. This film has an in-plane retardation of 50 nm or less and a thickness of 30-200 ¢mu!m.The copolymer is one forming a film which, when stretched at a pulling rate of 100 mm / min at such a temperature as to result in a stress at 200% strain of 0.8+-0.1 MPa, gives a stress-strain curve inwhich the parameter (A) calculated with the equation (1) is in the range of 0.0007-0.1. (A) = (B600 - B200) / 400 equation (1) (In the equation, B600 and B200 represent stresses (MPa) at strains of 600% and 200%, respectively).

An optical film, comprising a first phase contrast film (2) having a requirement of (ne - no > 0) where an average refractive index in the surface of at least one sheet of film is (no) and a refractive index in the thickness direction thereof is (ne) and a second phase contrast film (3) having a requirement of (nx > ny > / = nz) where a refractive index in the surface of at least one sheet of film in the direction providing the maximum refractive index is (nx), a refractive index in the direction perpendicular to that direction is (ny), and a refractive index in the thickness direction thereof is (nz), wherein both films are laminated with each other, whereby, when the absorbing axis directions of a polarizing plate are disposed perpendicular to each other, the leakage of light occurred when an observing direction is tilted from a front in a direction different from the absorbing axis directions can be reduced.

A transflective liquid crystal display comprising a plurality of pixels, each pixel comprising a liquid crystal layer (3) sandwiched between a front substrate (1) and a back substrate (2), and an optical layer (7) comprising a birefringent material, said pixels being divided into at least one transmissive (5) and at least one reflective subpixel (4), and said optical layer (7) being at least partly sandwiched between the liquid crystal layer (3) and one of said front substrate (1) or back substrate (2), and being patterned into domains (8, 9), each domain covering at least part of a reflective subpixel (4) or at least part of a transmissive subpixel (5).

An optical resin film is provided, in which a wavelength dispersion of a retardation in planar direction and a wavelength dispersion of a retardation in thickness direction are independently controlled, is provided and has at least an additive having a negative intrinsic birefringence.

A color liquid crystal display is provided where the viewing angle dependence of the gamma characteristic is improved by employing a pixel division method and display with high color reproducibility can be achieved when the screen is viewed not only front the front but also at an angle. By referring to the correction tables for R, G, and B, the following gamma correction is performed independently for R, G, and B to achieve good color tracking. The chromaticity of the front view shifts toward blue in an oblique hue correction range (IL) defined according to the pixel division ratio etc. to reduce the shift of the chromaticity of an oblique view toward yellow in the oblique hue correction range (IL) while the color balance in the other ranges (the gray scale level from 32 to 255 excluding the oblique hue correction range) is maintained. This invention is suitable for a pixel-division color liquid crystal display.

The purpose of the invention is to provide a liquid crystal display device for displaying images of high quality which not only eliminates the inversion in, but also removes the phase difference associated with the viewing angle, inversion of gradation is not caused in the direction out of the viewing angle. To achieve this goal, at least one sheet of optical phase difference plates 2, 3 is inserted between a pair of polarizing plates 4, 5 on both sides of said liquid crystal display device. Partitioning the liquid crystal display layers with different ratios and orient them in each anisotropic direction; Furthermore, when a pretilt angle is defined as the angle between the major axis of the liquid crystal molecule and the orienting film, the pretilt angle on the liquid crystal layer is controlled to such a range that when a voltage near the threshold voltage of the liquid crystal is applied to produce a medium tone display state, inversion of gradation is not caused in the direction out of the viewing angle.

The present invention relates to cinnamic acid derivatives of formula (S) wherein the radicals have the meanings indicated in claim 1, to a process for their preparation and to their use as self-assembling photoalignment agents in liquid crystal mixtures. The present invention further relates to a method for producing a liquid crystal (LC) display device with in-plane alignment by photoaligning a liquid crystal mixture having positive or negative dielectric anisotropy, the liquid crystal mixture comprising one or more compounds of formula S and optionally Polymerizing compounds, relating to the liquid crystal mixture comprising the self-assembled photo-alignment agent and optionally the polymerizable compound and the LC display manufactured by said method.

To provide a display device that does not change the basic structure of the display device in terms of design, does not impair the display quality in the direction where the contrast ratio is large, is not limited to the white display state or the black display state, and can improve the viewing angle dependence of the contrast ratio in a wide orientation sex. A display device comprising a display device having a contrast ratio dependent on a viewing angle, and an anisotropic scattering film having an anisotropic scattering layer, wherein the anisotropic scattering film is substantially parallel to a direction in which the contrast ratio of the display device is maximized It has a scattering central axis in the direction of and is arranged on the observation surface side of the display device.

The invention relates to a producing process for microfined organic pigment, a microfined organic pigment and a microfined organic pigmet coloring composition. the problem to be addressed is to provide a producing method for obtaining microfined organic pigment which can be applied on the coloring film of the liquid crystal television with low lantency, excellent view angle dependency, high transparency, a microfined organic pigment produced thereby, and microfined organic pigment coloring composition using the microfined organic pigment. The invention solves the problem by the producing process of the microfined organic pigment, which is characterized in that an organic pigment, a water-soluble inorganic salt, a water-soluble organic solvent and a resin (A) are mechanically compounded toobtain a compounding composition, then the water-soluble inorganic salt and the water-soluble organic solvent are removed by water, wherein the resin (A) has solubility of over a weight part with respect to 100 weight parts of water-soluble organic solvent under 25 DEG C., and containing an amino group and / or a quaternary ammonium cations.

The present invention provides a display device that can be improved at least in a specific direction without changing the design of the basic structure of the display device, without being limited by a white display state or a black display state, and without impairing display quality in other directions. Viewing angle dependence of contrast ratio. The above-mentioned display device comprises a display device whose contrast ratio has viewing angle dependence, and an anisotropic scattering film having an anisotropic scattering layer, wherein the above-mentioned anisotropic scattering film is inclined at a certain angle from a normal direction of an observation surface of the display device. The contrast ratio in the rear direction substantially coincides with the direction in which the contrast ratio takes an extreme value, has a scattering central axis, and is arranged on the viewing surface side of the display device.