Liquid crystal display device with matrix electrode structure

Details Liquid crystal display device with matrix electrode structure Liquid crystal display device with matrix electrode structure

1996-12-19

1999-03-09

Wu, Xiao

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 96, G09G 336

Patent

active

058807063

ABSTRACT:
The present invention provides a liquid crystal display device having a matrix electrode structure in which flicker of picture images displayed on a panel is invisible. Scanning electrodes of the matrix are driven by alternating voltages which include voltages for holding picture images displayed on the panel. Refresh pulse voltages higher than the holding voltages are imposed on the scanning electrodes every time the polarity of the holding voltages is reversed, so that the brightness of the picture images does not change before and after the reversing of the holding voltage polarity. In case an anti-ferroelectric liquid crystal is used as the liquid crystal, the refresh pulse voltages which cause transitions of the liquid crystal states between positive ferroelectric and negative ferroelectric states and do not cause the transition from an anti-ferroelectric state to the ferroelectric states are imposed on the scanning electrodes.

REFERENCES:
patent: 5418634 (1995-05-01), Kambe et al.
patent: 5459481 (1995-10-01), Tanaka et al.
patent: 5731795 (1998-03-01), Kanda

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