Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-05-23
2006-05-23
Chowdhury, Tarifur R. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S130000, C349S139000, C349S141000, C349S143000
Reexamination Certificate
active
07050134
ABSTRACT:
A tetragonal ring shape aperture is formed in the common electrode on one substrate and a cross shape aperture is formed at the position corresponding to the center of the tetragonal ring shape aperture in the pixel electrode on the other substrate. A liquid crystal layer between two electrodes are divided to four domains where the directors of the liquid crystal layer have different angles when a voltage is applied to the electrodes. The directors in adjacent domains make a right angle. The tetragonal ring shape aperture is broken at midpoint of each side of the tetragon, and the width of the aperture decreases as goes from the bent point to the edge. Wide viewing angle is obtained by four domains where the directors of the liquid crystal layer indicate different directions, disclination is removed and luminance increases.
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IBM Technical Disclosure, vol. 40, No. 05, May 1997, pp. 7-8, New Pixel Electrode Design and Cell Structure for Fabricating Multi-Domain Twisted Nematic, Multi-Domain Parallel Electrically Controllable Birefringent and Multi-Domain Guest Host Liquid Cr. May 1997.
Kim Kyeong-Hyeon
Lee Hea-Ri
Lee Kye-Hun
Song Jang-Kun
Cantor & Colburn LLP
Chowdhury Tarifur R.
Samsung Electronics Co,. Ltd.
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