Title:
METHOD FOR MANUFACTURING LIQUID CRYSTAL DISPLAY ELEMENT AND LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
Japanese Patent JP3723109
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve a problem associated with the appearance of variation of applied voltage-transmittance characteristics in the lapse of time influenced by a bias voltage in MDL (monodomain layer) treatment of a CDR (continuous director rotation) type liquid crystal display element with application of a direct current voltage which results in display unevenness and lowering of display quality.
SOLUTION: In a process to select a kind of layer structures of a chiral smectic C phase by cooling down the element from a cholesteric phase or from an isotropic liquid phase under the application of an electric field in the MDL treatment, the electric field to be applied is given by an electric signal the time interval and the amplitude of which are asymmetrically modulated in positive and negative directions.
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Inventors:
Takaki Takato
Masao Tanaka
Ichi Yamaguchi
Satoru Hasegawa
Tatsuo Saito
Hotta Aira
Masao Tanaka
Ichi Yamaguchi
Satoru Hasegawa
Tatsuo Saito
Hotta Aira
Application Number:
JP2001292403A
Publication Date:
December 07, 2005
Filing Date:
September 25, 2001
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G02F1/141; G02F1/13; G02F1/133; G02F1/1337; (IPC1-7): G02F1/141; G02F1/13; G02F1/133; G02F1/1337
Domestic Patent References:
| JP2000010076A | ||||
| JP2000275620A | ||||
| JP1289914A | ||||
| JP62182719A | ||||
| JP11044871A | ||||
| JP6043426A | ||||
| JP1172819A | ||||
| JP63194230A |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Kawamata Sumio
Nakamura Tomoyuki
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu
Iwa Saki Kokuni
Kawamata Sumio
Nakamura Tomoyuki
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu