Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-02-18
1997-11-04
Powell, Mark R.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 94, 349 33, G09G 336
Patent
active
056845030
ABSTRACT:
A method of driving a liquid crystal that has a memory capability, wherein a reset voltage is initially applied to the liquid crystal during a reset period, to bring about a Frederick's transition in the liquid crystal. During a subsequent selection period, a selection voltage that is selected on the basis of a critical value that brings about one of two metastable states in the liquid crystal is applied to the liquid crystal, and, during a nonselection period that follows the selection period, a nonselection voltage that is less than or equal to a threshold value that maintains two metastable states is applied to the liquid crystal. A delay period is provided between the reset period and the selection period, in order to gain effective timing for applying the selection voltage to the liquid crystal after the application of the reset voltage has been turned off. This shortens the length of the selection period, and hence the write time.
REFERENCES:
patent: 4701026 (1987-10-01), Yazaki et al.
patent: 4850676 (1989-07-01), Yazaki et al.
patent: 5488499 (1996-01-01), Tanaka et al.
IEEE Transactions on Electron Devices, vol. 36, No. 9-I, Sep. 1989 New York, US, pp. 1895-1899; Ferroelectric Liquid-Crystal Video Display, W.J.A.M. Hartmann.
Inoue Akira
Momose Kenichi
Nomura Hiroaki
Sato Yuzuru
Tanaka Takaaki
Luu Matthew
Powell Mark R.
Seiko Epson Corporation
LandOfFree
Method of driving a liquid crystal display device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of driving a liquid crystal display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of driving a liquid crystal display device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1836504