Display device with power-off delay circuitry

Details Display device with power-off delay circuitry Display device with power-off delay circuitry

1993-02-11

1999-09-14

Mengistu, Amare

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345214, G09G 336

Patent

active

059529903

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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