Title:
ACTIVE MATRIX TYPE LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP3208980
Kind Code:
B2
Abstract:
PURPOSE: To provide a liquid crystal element which can lessen various kinds of unequal display, such as striped unequal static electricity due to rubbing, unequal damage of active elements, unequal display like white dots and unequal luminance, and to greatly improve display quality and product yield in the final so as to reduce the cost by forming the oriented films of orientation control layers of an org. high- molecular substance having a specific glass transition temp.
CONSTITUTION: The oriented films 17 of the orientation control layers are formed out of an org. high-molecular substance having the glass transition temp. 150 to 280°C. Wire-shaped source electrodes 3 and common electrodes 4 are formed on the inner side of a pair of the transparent substrates 1 and the oriented films 17 are applied thereon and are subjected to an orientation treatment. A liquid crystal material is interposed therebetween during these treatments. Bar-shaped liquid crystal molecules 5 are so oriented as to have an angle of 45 to 90° to the longitudinal direction of striped source electrodes 3 at the time of not impressing electric fields. The liquid crystal molecules 5 change their directions to be in the electric field direction when the electric field 7 is impressed. Changing of the light transmittance by electric field impression is made possible by arranging polarizing plates 2 at the transmission axes 8 of the polarizing plates.
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Inventors:
Hisao Yokokura
Katsumi Kondo
Masato Ohe
Sukekazu Aratani
Shuichi Ohara
Katsumi Kondo
Masato Ohe
Sukekazu Aratani
Shuichi Ohara
Application Number:
JP4681194A
Publication Date:
September 17, 2001
Filing Date:
March 17, 1994
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G02F1/1337; G02F1/136; (IPC1-7): G02F1/1337; G02F1/136
Domestic Patent References:
| JP5691277A | ||||
| JP1120528A | ||||
| JP5265007A |
Attorney, Agent or Firm:
Yasuo Sakuta