Title:
【発明の名称】高分子分散型液晶電気光学素子及びその製造方法
Document Type and Number:
Japanese Patent JP3404748
Kind Code:
B2
Abstract:
A polymer dispersed liquid crystal electro-optical device comprises: a liquid crystal polymer complex layer (7) formed by compatibly dispersing polymer particles (7B) in a liquid crystal (7A) and phase-separating the liquid crystal and the polymer particles, in which the liquid crystal and the polymer particles are aligned in the same direction when no electric field is applied; and electrode structures (3 and 4) formed on corresponding sides of the liquid crystal polymer complex layer for applying an electric field to the liquid crystal polymer complex layer to align the liquid crystal along the electric field so as to render the liquid crystal polymer complex layer in a light-scattering state. The liquid crystal polymer complex layer is formed by polymerizing a polymer precursor under such conditions that a compound in which at least one hydrogen atom in a benzene ring is substituted by a hydroxy group or a compound having a benzene ring with a hydroxy group as a basic skeleton, for example, ditert-butylhydroquinone, is added to a solution compatibly dissolving the liquid crystal and the polymer precursor. The additive improves the initial refractive index, and the refractive index and contrast after energize-ageing as compared with those without addition.
Inventors:
Hidekazu Kobayashi
Shuhei Yamada
Shuhei Yamada
Application Number:
JP51569897A
Publication Date:
May 12, 2003
Filing Date:
November 11, 1996
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
C09K19/54; G02F1/1334; (IPC1-7): G02F1/1334; C09K19/54; G02F1/13
Domestic Patent References:
| JP5264980A | ||||
| JP632761A |
Attorney, Agent or Firm:
Hajime Inoue (2 outside)