Liquid crystal display with optical compensatory sheet having discotic molecules varyingly inclined
AssigneeFuji Photo Film Co., Ltd.
InventorsYoji Ito, Yosuke Nishiura, Koh Kamada, Hiroyuki Mori, Taku Nakamura
Life of this patent
Estimating the term…
Abstract
Disclosed is an optical compensatory sheet which comprises a transparent support and an optically anisotropic layer provided thereon, wherein the optically anisotropic layer comprises a compound having a discotic structure unit in its molecule and has negative birefringence, and the discotic structure unit has a plane inclined from a plane of the transparent support at an angle varying along a direction of depth of the anisotropic layer. A liquid crystal display and a color liquid crystal display provided with the optical compensatory sheet are also disclosed.
Claims23
An optical compensatory sheet which comprises a transparent support and an optically anisotropic layer provided thereon, wherein the optically anisotropic layer comprises a compound having one or more discotic structure units in its molecule and has a negative birefringence, and the discotic structure units have planes inclined from a plane of the transparent support at angles varying along a direction of depth of the optically isotropic layer.
A liquid crystal display comprising a liquid crystal cell which comprises a pair of substrates provided with a transparent electrode and twist-oriented nematic liquid crystal sealed therebetween, a pair of polarizing sheets arranged on both sides of the cell, and an optical compensatory sheet provided between the liquid crystal cell and the polarizing sheet;
- wherein the optical compensatory sheet comprises a transparent support and an optically anisotropic layer provided thereon, and the optically anisotropic layer comprises a compound having one or more discotic structure units in its molecule and has a negative birefringence, the discotic structure units having planes inclined from a plane of the transparent support at angles varying along a direction of depth of the optically anisotropic layer.
A color liquid crystal display comprising a liquid crystal cell which comprises a pair of substrates provided with a transparent electrode, a transparent electrode of picture element and color filter, and twist-oriented nematic liquid crystal sealed between the substrates, a pair of polarizing sheets arranged on both sides of the cell, and an optical compensatory sheet provided between the liquid crystal cell and the polarizing sheet;
- wherein the optical compensatory sheet comprises a transparent support and an optically anisotropic layer provided thereon, and the optically anisotropic layer comprises a compound having one or more discotic structure units in its molecule and has a negative birefringence, the discotic structure units having planes inclined from a plane of the transparent support at angles varying along a direction of depth of the optically anisotropic layer.
Dependencies are inferred from the claim text.