Electro-Optic display providing a grey scale by utilizing voltage dependent birefringence
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United States of America Patent
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Dec 7, 1999
Issued Date -
N/A
app pub date -
Feb 27, 1997
filing date -
Nov 8, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to an active matrix liquid crystal display device based on voltage control (non-zero driving voltage) of the birefringence (negative or positive) of the liquid crystal cell. In the device a ground (earth) plate comprises a piece of glass with a transparent conductive coating, such as indium tin oxide. A silicon wafer with integrated circuits on it has a coating of polymer for aligning liquid crystal molecules. The coated glass also has a coating for aligning the liquid crystal molecules.
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