Photo ablation to resolve "bright on" pixel defects in a normally white LCD
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United States of America Patent
Stats
-
Nov 2, 2004
Grant Date -
Aug 1, 2002
app pub date -
Jan 26, 2001
filing date -
Jan 26, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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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