Liquid crystal display having domain dividers

Details Liquid crystal display having domain dividers Liquid crystal display having domain dividers

2005-08-30

2005-08-30

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

06937311

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.

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