Display device with power-off delay circuitry
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United States of America Patent
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-
Sep 14, 1999
Issued Date -
N/A
app pub date -
Feb 11, 1993
filing date -
Aug 18, 1986
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A driving and switching off circuit is provided for a liquid crystal display device having a memory effect and a plurality of pixels, with each pixel capable of exhibiting two states in accordance with an electric field applied thereto. The circuit comprises a driving circuit for applying a drive signal to the display device to cause all of the pixels to uniformly exhibit one of the two states, a delay circuit for providing an end signal subsequent to the application of the drive signal and a switching circuit, responsive to the delay circuit, for switching off the display device subsequent to causing all the pixels to uniformly exhibit the one state.
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