Liquid crystal display device
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United States of America Patent
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Aug 25, 1998
Grant Date -
N/A
app pub date -
Dec 23, 1994
filing date -
Dec 27, 1993
priority date (Note) -
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Abstract
In an active matrix type liquid crystal display device, a time gradation display manner for performing time gradation display is used. A digital gradation (voltage) signal on a signal line is supplied to the digital memory circuit arranged in vicinity of each pixel electrode and stored therein for a desired period of time. This storage state is held until next scanning is started. A high voltage or a low voltage supplied as a power source voltage of the digital memory circuit is applied to a pixel electrode while the digital memory circuit is in a storage state, so that a desired voltage is stably applied to the pixel electrode.
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