Fujifilm Corporation

Shun Nakamura

Masayoshi Toyoda

Katsufumi Ohmuro

Kazuhiro Oki

Yasuyuki Sasada

Hirokazu Nishimura

Kazuhiro Shiojiri

Akihiro Matsuoka

A process for producing an optical compensation film comprises a liquid crystal layer application step () of applying a liquid crystal layer coating solution containing a liquid crystal compound to an alignment layer on a surface of a transparent substrate () that is continuously transported; a liquid crystal layer drying step () of drying the liquid crystal layer; a cooling and curing step of curing the liquid crystal layer while cooling the liquid crystal layer to a temperature lower than a drying temperature used in the drying step; and a heating and curing step of curing the alignment layer while heating the alignment layer to a temperature higher than a cooling temperature used in the cooling and curing step. The process enables the durability and damage resistance as well as the optical characteristics of the optical compensation film to be independently controlled.

Process and apparatus for producing optical compensation film, optical compensation film, polarizer, and liquid-crystal display

A liquid-crystal display device comprising a liquid-crystal cell and at least three optically-anisotropic layers disposed on each side of the liquid crystal cell, wherein they are combined so that the &#x394;nd value of the liquid-crystal cell and the optical characteristics of the optically-anisotropic layers can satisfy predetermined relationships, is disclosed.

Liquid-crystal display device with at least three optically-anisotropic layers having formulated in-plane retardations

A laminated optical film including a first optical anisotropic layer, and a second optical anisotropic layer, wherein Relationship (1), &#x2212;10 nm&#x2266;&#x394;Re1&#x2212;&#x394;Re2&#x2266;10 nm, is satisfied when a slow phase axis of the first optical anisotropic layer is substantially perpendicular to a slow phase axis of the second optical anisotropic layer, wherein Relationship (2), &#x2212;10 nm&#x2266;&#x394;Re1+&#x394;Re2&#x2266;10 nm, is satisfied when the slow phase axis of the first optical anisotropic layer is substantially parallel to the slow phase axis of the second optical anisotropic layer, wherein an in-plane retardation value Re of the film as a whole satisfies 30 nm&#x2266;Re&#x2266;500 nm, where &#x394;Re1 denotes a value calculated from 'Re1 (at a temperature of 50&#xb0; C.)&#x2212;Re1 (at a temperature of 25&#xb0; C.)' concerning the first optical anisotropic layer, and &#x394;Re2 denotes a value calculated from 'Re2 (at a temperature of 50&#xb0; C.)&#x2212;Re2 (at a temperature of 25&#xb0; C.)' concerning the second optical anisotropic layer.

Laminated optical film, polarizing plate and liquid crystal display device

A laminated optical film including a first optical anisotropic layer, and a second optical anisotropic layer, wherein Relationship (1) is satisfied when a slow phase axis of the first optical anisotropic layer is substantially perpendicular to a slow phase axis of the second optical anisotropic layer,&#x2212;10 nm&#x2266;&#x394;Re1&#x2212;&#x394;Re2&#x2266;10 nm&#x2003;&#x2003;Relationship (1)

A laminated optical film including a first optical anisotropic layer, and a second optical anisotropic layer, wherein Rth1 of the first optical anisotropic layer, and Rth2 of the second optical anisotropic layer satisfy one of Relationships (1) and (2), and&#x394;Rth1&#x2267;0 nm and &#x394;Rth2&#x2266;0 nm &#x2003;&#x2003;(1)&#x394;Rth1&#x3c;0 nm and &#x394;Rth2&#x3e;0 nm &#x2003;&#x2003;(2)wherein a retardation value Rth of the laminated optical film as a whole in its thickness direction satisfies 50 nm&#x2266;Rth&#x2266;500 nm, where &#x394;Rth1 denotes a value obtained by calculating the expression Rth1 (at a temperature of 50&#xb0; C.)&#x2212;Rth1 (at a temperature of 25&#xb0; C.) concerning the first optical anisotropic layer, and &#x394;Rth2 denotes a value obtained by calculating the expression Rth2 (at a temperature of 50&#xb0; C.)&#x2212;Rth2 (at a temperature of 25&#xb0; C.) concerning the second optical anisotropic layer.

There is provided a liquid crystal display which includes: a liquid crystal cell containing a pair of transparent substrates and a liquid crystal layer containing liquid crystal molecules, sandwiched between the pair of the transparent substrates; and a polarizing plate, disposed on an outside of each transparent plate, and comprising at least a polarizer and an optical film containing at least first, second and third optical anisotropic layers, wherein the liquid crystal display device satisfies the following conditions (1) to (7).

Liquid crystal display

The present invention provides a liquid crystal display device that requires a reduced power consumption, which shows improved response speed and improved viewing angle properties, and that can give high-quality image display at low power consumption, and the liquid crystal display device of the present invention comprises a bend orientation mode liquid crystal cell using a low-temperature polysilicon TFT; and two polarizing plates disposed on both sides of the liquid crystal cell respectively, wherein at least one of the two polarizing plates is an elliptically polarizing plate comprising: a transparent protective layer; a polarizing layer; a transparent support; and an optically anisotropic layer comprising a discotic compound, in this order from outside of the liquid crystal cell, an inclination angle between the disc plane of the discotic compound and the transparent support plane is within a range of 25 to 35 degrees on the average, and the optically anisotropic layer has a Reretardation value measured in front of the face of 25 to 50 nm.

Growing community of inventors

Minami-ashigara, Japan

Shun Nakamura