摘要:
A process of producing a cellulose acylate film is disclosed. The process comprises a forming step of forming a web of a fluid, comprising a cellulose acylate, aromatic group-containing oligomer and solvent, by casting the fluid onto a support, a stretching step of stretching the web, thereby to align molecules of the aromatic group-containing oligomer along the stretching direction, and a heat-treatment step of subjecting the stretched web to a heat treatment, thereby to at least increase the alignment degree of molecules of the aromatic group-containing oligomer.
摘要:
The invention relates to a polarizing plate comprising at least a polarizing layer having a K value as defined by the following expression of from 0.25 to 0.75; K=(kx−kz)/(kx−ky) wherein axes which are orthogonal to each other in a plane of the polarizing layer are an x-axis and a y-axis; an axis which is orthogonal to an x-y axis plane is a z-axis; and kx, ky and kz are an absorption coefficient along the x-axis, y-axis and z-axis directions, respectively.
摘要:
A liquid crystal display where grayscale inversion is reduced includes a liquid crystal cell having pixel groups, each group comprising a red (R) pixel, a green (G) pixel, a blue (B) pixel, and a white (W) pixel, and drive circuitry that applies a voltage VRGB and a voltage VW satisfying the formulae (ia) and (iia) between electrodes defining the G pixel and between electrodes defining the W pixel, respectively, depending on a grayscale level L (where L satisfies 0≦L≦1) in grayscale where substantially the same voltage VRGB is applied between electrodes defining each of the R, G, and B pixels: for 0
摘要:
Liquid crystal display where grayscale inversion is reduced. The liquid crystal cell having pixel groups, each group comprising a red (R) pixel, a green (G) pixel, a blue (B) pixel, and a white (W) pixel, the liquid crystal display further comprising drive means that applies a voltage VRGB and a voltage VW satisfying the formulae (ia) and (iia) between electrodes defining the G pixel and between electrodes defining the W pixel, respectively, depending on a grayscale level L (where L satisfies 0≦L≦1) in grayscale where substantially the same voltage VRGB is applied between electrodes defining each of the R, Q and B pixels: 0
摘要:
A novel liquid crystal display device is disclosed. the device comprises a liquid crystal cell comprising a pair of substrates disposed facing each other, at least one of said pair of substrates having an electrode thereon, and a liquid crystal layer held between said pair of substrates, comprising a nematic liquid crystal material, molecules of which being oriented nearly normal to the surfaces of said pair of substrates in a black state, a first and a second polarizing films disposed while placing said liquid crystal cell in between; and at least two optically anisotropic films, each of them disposed respectively between said liquid crystal layer and each of said first and said second polarizing films, wherein, assuming thickness of said liquid crystal layer as d (nm), refractive index anisotropy of said liquid crystal layer at wavelength λ (nm) as Δn (λ), and in-plane retardation of said optical compensation film at wavelength λ as Re(λ), relations (I) to (IV) below are satisfied at least at two different wavelengths in a wavelength range from 380 nm to 780 nm: 200≦Δn(λ)×d≦1000 (I) Rth(λ)/λ=A×Δn(λ)×d/λ+B; (II) Re(λ)/λ=C×λ/{Δn(λ)×d}+D; and (III) 0.488≦A≦0.56, B=−0.0567, −0.041≦C≦0.016; and D=0.0939. (IV)
摘要:
A liquid-crystal display device comprising a liquid-crystal cell with plural domains and a transparent film comprising at least two domains that differ in in-plane retardation (Re) and/or thickness-direction retardation (Rth) for a visible light wavelength λ nm is disclosed. The domains of the transparent film and the domains of the liquid-crystal cell have no correlation in terms of their arrangement and/or size.
摘要:
A novel optical compensation film is disclosed. The optical compensation film has Re/Rth(450 nm), a ratio of Re to Rth measured at 450 nm, 0.4 to 0.95 times as large as Re/Rth(550 nm) at 550 nm, and having Re/Rth(650 nm) at 650 nm 1.05 to 1.9 times as large as Re/Rth(550 nm) at 550 nm. In the formulae, Re is in-plane retardation defined as Re={(nx−ny)×d1}; Rth is depth retardation defined as Rth=[{(nx+ny)/2−nz}×d1]; d1(nm) is a thickness of the film, nx, ny and nz are respectively mean refractive indices in the directions of x-axis, y-axis and z-axis orthogonal to each other; nx and ny are in-plane main mean refractive indices in parallel with the surface of said optical compensation film (where, ny
摘要:
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°.
摘要:
An organic EL display device including at least one high-refractive-index layer having a refractive index of 1.6 or higher, and at least one low-refractive-index layer having a refractive index lower than 1.6, wherein the low-refractive-index layer contains high-refractive-index particles having a refractive index of 1.6 or higher, and wherein the high-refractive-index particles are disposed in a region 1.0 time to 1.2 times an average particle diameter of the particles from an interface between the high-refractive-index layer and the low-refractive-index layer, and the average particle diameter is 0.3 μm to 1 μm.
摘要:
Provided is an optical filter having a light-transmitting region of transmitting light having a predetermined wavelength and a light-blocking region disposed adjacent to the light-transmitting region to block out the light, wherein the light-blocking region has an optical density gradation relative to light in the normal direction, from the contact point to the light-transmitting region along an in-plane direction, and the optical density is the smallest at the contact point to the light-transmitting region.