Liquid crystal display device having light shading film

Details Liquid crystal display device having light shading film Liquid crystal display device having light shading film

1998-03-16

2000-01-04

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349 43, 349 44, 349128, 349139, G02F 1136, G02F 11337, G02F 11343

Patent

active

060116048

ABSTRACT:
On one of a pair of substrates sandwiching a liquid crystal, a pair of signal lines, a pair of scanning lines intersecting these signal lines at right angles, a picture element electrode arranged in the region surrounded by the signal lines and the scanning lines, and a first alignment layer on which alignment treatment is applied in a first alignment direction, are formed. On the other of the substrates, a counter electrode, and a second alignment layer on which alignment treatment is applied in a second alignment direction, are formed. The alignment treatments on the first and second alignment layers are mutually carried out so that the side of the picture element electrode at which an optical leakage caused by disclination of a liquid crystal appears largest is near one of the pair of signal lines. On one of the pair of substrates, a light shading film is formed to be partially overlapped with one or more sides of the picture element electrode containing at least one side at which an optical leakage appears largest. The width of light shading film overlapped with the side of the picture element electrode at which the optical leakage appears smaller, can be set smaller to improve the aperture ratio.

REFERENCES:
patent: 5149771 (1992-09-01), Murata et al.
patent: 5215677 (1993-06-01), Narita et al.
patent: 5416619 (1995-05-01), Koike
patent: 5434688 (1995-07-01), Saitoh et al.
patent: 5459596 (1995-10-01), Ueda et al.
patent: 5499123 (1996-03-01), Mikoshiba
patent: 5510916 (1996-04-01), Takahashi

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