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Title:
LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
Japanese Patent JPH04191819
Kind Code:
A
Abstract:
PURPOSE:To improve response characteristics by respectively specifying the helix angle of a liquid crystal molecule, the product of the refractive index anisotropy of the liquid crystal and the thickness of a liquid crystal layer, and the thickness of the liquid crystal layer. CONSTITUTION:Transparent electrodes 13 and 14, and orientation films 15 and 16 are respectively formed on the counter surfaces of two glass substrates 11 and 12. Liquid crystal material which is obtained by adding several percentage optical active substance in nematic liquid crystal provided with positive dielectric constant anisotropy is inserted between two glass substrates 11 and 12, and by adding the optical active substance, a prescribed helical pitch is given to the liquid crystal molecule 17. The helix angle of the liquid crystal molecule is set within the extent of 210 deg. - 260 deg., the product (n)X(d) of the refractive index anisotropy of the liquid crystal (n) and the thickness of the liquid crystal layer (d) is set to the extent of 0.56 - 0.90mum and the thickness (d) of the liquid crystal layer is set to the extent 2.5 - 4.0mum. Thus, the liquid crystal display element whose response speed is high and whose contrast is high can be obtained.

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Inventors:
YABE YOSHIKAZU
KIJINO FUTOSHI
TAGUCHI SHUNSUKE
KOBATA KATSUKIYO
KATANO KOICHI
Application Number:
JP32376990A
Publication Date:
July 10, 1992
Filing Date:
November 27, 1990
Export Citation:
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Assignee:
FUJITSU KIDEN
International Classes:
G02F1/133; (IPC1-7): G02F1/133
Domestic Patent References:
JPS63274923A1988-11-11
JPS63274924A1988-11-11
JPS63274925A1988-11-11
JPS63274926A1988-11-11
JPS63274927A1988-11-11
JPH02207217A1990-08-16
JPS6433522A1989-02-03
JPH0289475U1990-07-16
JPS6437537A1989-02-08
Attorney, Agent or Firm:
Yoshiyuki Osuge (1 outside)



 
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