Active matrix liquid crystal display for reproducing images on screen with floating image signal
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United States of America Patent
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Dec 10, 1996
Issued Date -
N/A
app pub date -
Dec 16, 1994
filing date -
Jan 13, 1992
priority date (Note) -
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Abstract
An active matrix liquid crystal display allows thin film switching transistors to selectively turn on for supplying an image signal from a liquid crystal driving circuit to pixel electrodes opposed through liquid crystal to a counter electrode. The image signal has a voltage range variable with gradation to be indicated for reproducing an image. The liquid crystal driving circuit controls the image signal in such a manner as to be change a central value of the voltage range with the gradation to be reproduced at each pixel so that variation of a feed-through voltage is canceled.
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