Active color liquid crystal display element compensating for differing voltage-transmission curves of the primary colors
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United States of America Patent
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Mar 7, 1989
Grant Date -
N/A
app pub date -
Jan 14, 1988
filing date -
Jan 22, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an active color liquid crystal display element in which display electrodes are arranged in a matrix form within a liquid crystal cell, color filters of three primary colors are each disposed opposite one of the display electrodes, the color filters of the three colors being distributed substantially uniformly, and a thin film transistor connected to each display electrode is controlled, by switching, in accordance with an input color image signal to charge and discharge the display electrode for displaying a color image, the structures of the thin film transistors are selected corresponding to the color filters of the three primary colors so that substantially the same light transmission-voltage characteristic is provided for all the three color filter portions.
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