Asymmetric liquid crystal actuation system and method
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United States of America Patent
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Feb 17, 2004
Grant Date -
Dec 5, 2002
app pub date -
May 21, 2001
filing date -
May 21, 2001
priority date (Note) -
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Abstract
A liquid crystal display (LCD) system, comprising a matrix of pixels, actuates each pixel by applying positive and negative voltage differences across a liquid crystal layer. The liquid crystal layer is parallel to a transparent cover. The transparent cover is adjacent to a cover electrode. Each pixel includes a pixel electrode positioned on the opposite side of the liquid crystal layer from the cover electrode. The positive and negative voltage differences are asymmetric to compensate for polarity-dependent characteristics of the LCD materials. The positive and negative voltage differences are applied for durations that counterbalance the asymmetric rates of charge accumulation.
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