Liquid crystal display device having 4-divided domains

Details Liquid crystal display device having 4-divided domains Liquid crystal display device having 4-divided domains

2005-01-07

2009-08-25

Schechter, Andrew (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S123000, C349S127000, C349S128000, C349S130000

Reexamination Certificate

active

07580101

ABSTRACT:
A picture element includes a 4-divided domain including first, second, third and fourth sub-domains which are arranged in this order in a predetermined direction and in each of which an orientation direction of liquid crystal molecules located in the vicinity of the center of a liquid crystal layer in the thickness direction is different from those of the other sub-domains. A first substrate includes two first regions having an orientation-regulating force for orienting the liquid crystal molecules in a first direction and a second region provided between the two first regions and having an orientation-regulating force for orienting the liquid crystal molecules in a second direction that is opposite to the first direction. A second substrate includes a third region having an orientation-regulating force for orienting the liquid crystal molecules in a third direction that crosses the first direction and a fourth region having an orientation-regulating force for orienting the liquid crystal molecules in a fourth direction that is opposite to the third direction. The first sub-domain is formed between one of the two first regions and the third region, the second sub-domain is formed between the second region and the third region, the third sub-domain is formed between the second region and the fourth region, and the fourth sub-domain is formed between the other one of the two first regions and the fourth region.

REFERENCES:
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patent: 11-352486 (1999-12-01), None
Naoki Kato, et al; “Four-Domain TN-LCD Using New Division Pattern and Special Arrangement”, IDW'97, pp. 163-166, 1997.
Japanese Office Action mailed Oct. 18, 2005 (w/English translation thereof).

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