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EP0492668A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Liquid crystal display device

Assignee: Merck Patent GmbH
•
Filing: 1991-12-27
•
Granted: —
•
Expires: 2011-12-27
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Abstract

Abstract It is an object of the present invention to provide a polymer dispersion-type liquid crystal display device having a high holding rate, a superior display quality and a high reliability; the liquid crystal display device according to the present invention composed of (i) a display electrode substrate, (1,5) (ii) a counter electrode substrate and (6,7) (iii) a liquid crystal layer (8) interposed between said display electrode substrate and said counter electrode substrate, in which liquid crystals having a positive anisotropy in dielectric constant are dispersed in a transparent polymer; the transparent polymer is a photo cation polymerization setting-type transparent polymer and the liquid crystals are fluorine-containing aryl compounds.

Inventors

  • 👤 Ulrich Dr. Finkenzeller
  • 👤 Eike Dr. Poetsch
  • 👤 Shohei Naemura
  • 👤 Toshiyuki Hirai
  • 👤 Shuichi Kouzaki
  • 👤 Fumiaki Funada

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 17:57
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; C09K19/14; C09K19/16; C09K19/18; C09K19/30; C09K19/3001; C09K19/3003; C09K19/3028; C09K19/3059; C09K19/3066; C09K19/3068; C09K19/52; C09K19/54; C09K19/542; C09K19/544; C09K2019/0444; C09K2019/0448

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 222 words
A liquid crystal display device comprising (i) a display electrode substrate provided with signal electrodes (2), scanning electrodes (3), switching transistors (4) formed at the respective points of intersection of said signal electrodes and said scanning electrodes and display image element electrodes (5) on a first transparent insulating substrate (1), (ii) a counter electrode substrate provided with a counter electrode (7) arranged on a second transparent insulating substrate (6) so as to be positioned within an opposite range of said display image element electrodes (5), and (iii) a liquid crystal layer (8) with liquid crystals having a positive anisotropy in dielectric constant dispersed in a transparent polymer interposed between said display electrode substrate and said counter electrode substrate, wherein said transparent polymer is a cation polymerization photo-setting-type transparent polymer and said liquid crystals comprise at least one kind of liquid crystal selected from the group consisting of compounds expressed by the following chemical formulae [I] and/or [II]: wherein X₁, X₂ and X₃ independently represent H, F, CF₃ or OCF₃; A represents a single bond, -CH₂CH₂-, -C≡C- or -COO-; Y represents C n H 2n+1 - or (n represents a number of 2 to 10), wherein X₁ to X₃ and A have the same meaning as in [I]; Z represents C n H 2n+1 -, (n has the same meaning as in [I]).
Claim 2
Dependent Claim 15 words
A projection device, comprising a liquid crystal display device as set forth in Claim 1.

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