Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1997-08-19
2000-08-01
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349124, 349192, 349187, G02F 11337, G02F 113
Patent
active
060974621
ABSTRACT:
A defect compensation method for a liquid crystal display apparatus, where a laser beam is irradiated on an alignment film for aligning an orientation of liquid crystal molecules while monitoring the light transmission rate before the arrangement of polarizing plates until a target light transmittance is reached. As a result, the (molecular orientation) function of the alignment film is lowered to prevent the defective pixel from standing out. The method includes measuring the transmittance of the defective pixel, irradiating with a laser beam, measuring the transmittance of the defective pixel again, calculating an optimum irradiation condition based on the results of the after-irradiation measurement and repeating the irradiation and measurement of transmittance until the desired transmittance is obtained.
REFERENCES:
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patent: 5280374 (1994-01-01), Nakai et al.
patent: 5465121 (1995-11-01), Blalock et al.
patent: 5636042 (1997-06-01), Nakamura et al.
patent: 5847784 (1998-12-01), Finnila et al.
Horney Kari M.
Kananen Ronald P.
Sikes William L.
Sony Corporation
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