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Liquid crystal display device

Foreign code F110004783
File No. B58-01WO
Posted date Jul 21, 2011
Country Republic of Korea
Application number 20067019262
Gazette No. 20070003952
Gazette No. 100781819
Date of filing Sep 19, 2006
Gazette Date Jan 5, 2007
Gazette Date Dec 3, 2007
International application number JP2005004481
International publication number WO2005090520
Date of international filing Sep 19, 2006
Date of international publication Sep 29, 2005
Priority data
  • P2004-079563 (Mar 19, 2004) JP
  • P2004-192448 (Jun 30, 2004) JP
Title Liquid crystal display device
Abstract [PROBLEMS] To provide a liquid crystal display device that does not need any surface aligning treatment, realizes striking increase of a response speed of movie display and is free from any light leakage (produce dark field) at black display. [MEANS FOR SOLVING PROBLEMS] There is provided a liquid crystal display device comprising a pair of transparent substrates and, interposed therebetween, a polymer stabilized blue-phase liquid crystal.
The liquid crystal display device utilizing the polymer stabilized blue-phase liquid crystal exhibits a large birefringence change upon application of an electric field to cell substrate in an in-plane direction.
The polymer stabilized blue-phase liquid crystal is composed of a low-molecular liquid crystal capable of developing a blue phase between cholesteric phase and isotropic phase and a polymer network created in the low-molecular liquid crystal.
Further, by optimizing the type and amount of chiral dopant added to the liquid crystal, there can be provided a liquid crystal display device that is free from any light leakage (produce dark field) at black display. ® KIPO & WIPO 2007
Scope of claims [claim1]

Wedged in a transparent substrate 1 pair and liquid crystal display device consisting of polymer-stabilized blue phase LCD supported the polymer stabilization program must blue phase LCD with cholesteric liquid, etc. who feature to get expressed and blue phase phase between low molecular weight liquid crystal formed in the low molecular weight liquid crystal polymer network and from the electric field applied parallel to the substrate to liquid crystal displays.

[2] wherein polymer stabilization program must blue phase LCD includes a power lyledopant, the polymer stabilization program must Bull one phase power lyledopant on the Crystal of wavelengths of the polymer stabilization program must blue phase LCD is the visible region (380 ― 750 nm) claim 1 to be co-ordinated to be outside, in liquid crystal display.

The comb teeth [3] wherein electric built into each other to the transparent substrate on the other hand two electrodes applied that claim 1 or 2 in liquid crystal display.

Applying as an electric field [4] above field incorporating common electrode with a TFT substrate surface on the other hand, according to the input signal off by on above TFT 1-year-old during the TFT and common electrodes and characteristics and to claim 1 or 2 liquid crystal display device.

[5] cholesteric phase, etc. who of composite of liquid crystal mixture consisting of polymer network formed by polymer network formed by low molecular weight liquid crystals with low molecular weight liquid crystal phase between expressed blue phase and get the non-liquid crystalline monomer polymerization as well as the Crosslinking agent and from the blue phase RA polymer stabilization program must blue phase LCD is configured in the polymer stabilized ¨ 匕 blue phase LCD includes a caryledopant, against the polymer stabilization program must blue phase LCD power rail do Punt amount of power the stability program must blue phase of liquid crystalline polymer diffraction wave is the visible region (380-750 nm) polymer stabilization program must blue phase LCD to be co-ordinated to be outside.
  • Applicant
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • Inventor
  • KIKUCHI HIROTSUGU
  • KAJIYAMA TISATO
  • NAGAMURA TOSHIHIKO
  • HISAKADO YOSHIAKI
IPC(International Patent Classification)
Reference ( R and D project ) SORST Selected in Fiscal 2003
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