Photo ablation to resolve "bright on" pixel defects in a normally white LCD

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United States of America Patent

PATENT NO 6812992
APP PUB NO 20020101558A1
SERIAL NO

09770854

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Abstract

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A technique is provided to resolve 'bright on' pixels defects in a normally white liquid crystal display. A laser operating with a wavelength in the visible range permits the ablation of material coated or adhered to a glass substrate of the liquid crystal display without causing thermal or mechanical damage to the glass substrate. The laser is used to darken the defective pixel by focusing on color filter of the defective pixel. After a portion of the color filter is darkened, a minor defect exists.

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Patent Owner(s)

Patent OwnerAddress
ROCKWELL COLLINS INC400 COLLINS ROAD NE CEDAR RAPIDS IA 52498

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nemeth, Paul R Cedar Rapids, IA 34 572

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