Optical modulator and integrated circuit therefor
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United States of America Patent
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Oct 7, 2003
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N/A
app pub date -
Sep 8, 1998
filing date -
Sep 8, 1997
priority date (Note) -
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Abstract
An optical modulator comprises a layer of a ferroelectric liquid crystal material being provided between an integrated circuit and a light transmissive sheet. The light transmissive sheet and the integrated circuit carry respective electrodes which define selected areas of said layer. In use, the selected areas are addressed with data according to an addressing sequence which is repeated in successive time periods. The optical modulator includes means for providing a plurality of voltage pulses to the one or more electrodes being carried by the light transmissive sheet in a given time period, thus enabling a time dithered greyscale driving scheme to be used.
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