Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1994-12-23
1997-06-10
Gross, Anita Pellman
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349 42, 349192, G02F 1136, G02F 11333, G02F 113
Patent
active
056381999
ABSTRACT:
According to the present invention, a method for repairing a defective pixel of a liquid crystal display device is provided. The liquid crystal display device includes a first transparent substrate on an internal surface of which switching elements are formed; a second transparent substrate which is provided being spaced apart from the first transparent substrate and on an internal surface of which a black mask pattern is formed; liquid crystal interposed between the first and the second transparent substrates having a twisted-nematic orientation; and two polarizing plates provided on external surfaces of the first and the second transparent substrates. The method includes the steps of: applying a photosensitive resin composition containing a photosensitive resin and a colorant to the second transparent substrate on a light-outgoing side of the liquid crystal display device; irradiating light rays from an external light source so as to cure the resin composition at a position corresponding to that of a defective pixel on the polarizing plate on the light-outgoing side of the liquid crystal display device, the position being on optical paths of the light rays incident from the external light source; and removing an uncured resin composition from a surface of the polarizing plate on the light-outgoing side. According to the method of the invention, a light-shielding portion is easily formed at the position corresponding to that of the defective pixel by patterning.
REFERENCES:
patent: 5142386 (1992-08-01), Ishihara
patent: 5267066 (1993-11-01), Nakai et al.
patent: 5280374 (1994-01-01), Nakai et al.
patent: 5335102 (1994-08-01), Kanemori et al.
patent: 5368991 (1994-11-01), Uchikawa et al.
patent: 5422207 (1995-06-01), Yoda et al.
Takafuji Yutaka
Tsubota Kojiro
Yoshimura Yoji
Gross Anita Pellman
Sharp Kabushiki Kaisha
Ton Toan
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