Nitto-Denko Corporation

Other

Shusaku Nakano

Amane Mochizuki

Sadahiro Nakanishi

Minoru Miyatake

Kyoko Izumi

Takashi Kamijo

Shoichi Matsuda

Hironori Motomura

Shunsuke Shuto

Yasuko Iwakawa

Toshitaka Nakamura

Tohru Kobayashi

Ken Suzuki

Shinya Yamada

Yuji Nakayama

Tsutomu Hashimoto

Yukiharu Iwaya

Yoshiki Hasegawa

An object of the present invention is to provide a thin optical laminate a refractive index of which is three-dimensionally controlled. The optical laminate of the present invention comprises a retardation layer containing a polycyclic compound having at least one of a &#x2014;SOM group and a &#x2014;COOM group, and having an index ellipsoid satisfying a relationship of nx&#x2266;nz&#x3e;ny; and a retardation layer having an index ellipsoid satisfying a relationship of nx&#x2267;ny&#x3e;nz. As the polycyclic compound, for example, a quinoxaline derivative represented by the following formula (I) is used. 

Optical laminate, polarizing plate, image display, and process for producing an optical laminate

The present invention provides a method of producing an optical laminate that can produce an optical laminate including an applied film containing a lyotropic liquid crystalline compound so that the thickness of the applied film will be approximately uniform. A method of producing an optical laminate having a base material and an applied film, comprising the step of applying a solution containing at least one kind of lyotropic liquid crystalline compound on the base material so as to form the applied film, wherein the concentration of the lyotropic liquid crystalline compound in the solution is lower than the isotropic phase&#x2014;liquid crystal phase transition concentration. For example, the concentration of the lyotropic liquid crystalline compound in the solution is from (C&#x2212;18)% by mass to (C&#x2212;1)% by mass, where Crepresents the isotropic phase-liquid crystal phase transition concentration.

Method of producing optical laminate and image displaying apparatus

An organic electroluminescence cell including at least one organic layer and a pair of electrodes, the organic layer including a light-emitting layer and sandwiched between the pair of electrodes, the pair of electrodes including a reflective electrode and a transparent electrode, the organic electroluminescence cell formed to satisfy the expression: B&#x3c;Bin which Bis a frontal luminance value of luminescence radiated from a light extraction surface to an observer, and Bis a luminance value of the luminescence at an angle of from 50&#xb0; to 70&#xb0;, wherein a reflection/refraction angle disturbance region is provided so that the angle of reflection/refraction of the luminescence is disturbed while the luminescence is output from the light-emitting layer to the observer side through the transparent electrode.

Organic electroluminescence cell, planar light source and display device

An optical film which comprises (i) a substrate without a vertical alignment layer and (ii) a homeotropic alignment liquid crystal film layer formed on the substrate. The homeotropic alignment liquid crystal film layer comprises a homeotropically aligned liquid crystal polymer.

Homeotropic alignment liquid crystal film

A homeotropic alignment liquid crystal film used for an optical film of a visual display etc. is manufactured by a method in which a side chain type liquid crystal polymer comprising a monomer unit (a) containing a liquid crystalline fragment side chain and a monomer unit (b) containing a non-liquid crystalline fragment side chain is coated on a substrate on which a vertical alignment film is not prepared, and the liquid crystal polymer is fixed while maintaining an alignment state after the liquid crystal polymer is homeotropically aligned in liquid crystal state.

Method for manufacturing homeotropic alignment liquid crystal film

This invention provides a polymerizable liquid crystal compound having a large value of &Dgr;n/n, excellent in coating properties on an alignment film and easily aligned. Disclosed is a polymerizable liquid crystal compound having at least one polymerizable reactive group and showing nematic liquid crystal properties, having a &Dgr;n/n value of 0.14 or more wherein n is average refractive index and &Dgr;n is extraordinary light refractive index (ne) minus ordinary light refractive index (no), and being aligned by application onto an alignment film.

Polymerizable liquid crystal compound and optical film

An optical diffusing plate that gives a anisotropic scattering of a linearly polarized light and has an excellent diffusion property in a scattering direction, and that is suitable for improving visibility, brightness of a liquid crystal display, comprising a birefringent film and a minute domain with a birefringent characteristic different from the birefringent film in a dispersed state in the birefringent film, the birefringent film comprises a birefringent stretched film, and the minute domain comprises a positive uniaxial liquid crystal polymer, wherein a length of the minute domain in a direction of stretching axis is longer than a length in a direction orthogonal to the stretching axis, and the liquid crystal polymer is aligned perpendicularly to a stretching axis of the birefringent stretched film.

Optical diffusing plate, optical element and liquid crystal display

Optical diffusing plate comprising birefringent film and side chain type liquid crystal polymer therein

Optically active monomer, liquid crystal polymer, and optical element

Circular dichroism optical element, apparatus thereof, and liquid

A crosslinking type liquid crystal polymer, an oriented crosslinking film thereof, and a method of producing the oriented crosslinking film are disclosed. The crosslinking type liquid crystal polymer comprises a liquid crystal polymer containing a polyfunctional azide compound represented by the following formula (A);

Growing community of inventors

Ibaraki, Japan

Shusaku Nakano