Liquid crystal display, data signal generator, and method of add

Details Liquid crystal display, data signal generator, and method of add Liquid crystal display, data signal generator, and method of add

Filed on

1995-10-30

Date issued

1998-12-01

Examiner

Luu, Matthew

Patent Class

Computer graphics processing and selective visual display system

SubClass

Plural physical display element control system

SubSubClass

Display elements arranged in matrix

Other Related Categories

345 94, G09G 336

Type

Patent

Status

active

Patent number

058445374

Description

ABSTRACT:
A ferroelectric liquid crystal display contains data electrodes connected to a data signal generator and strobe electrodes connected to a strobe signal generator. The strobe signal generator supplies strobe signals Vs1 to Vs4 in sequence to the strobe electrodes and the data signal generator supplies data signals Vd1 to Vd4 simultaneously and in synchronism with the strobe signals so as to refresh sequentially the rows of pixels formed at the intersections of the data electrodes and the strobe electrodes. Each data signal is selected from a plurality having the same polarity behaviour with respect to time, the same RMS voltage, and no net DC component.

REFERENCES:
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patent: 5018841 (1991-05-01), Mouri et al.
patent: 5177475 (1993-01-01), Stephany et al.
patent: 5285214 (1994-02-01), Bowry
Search Report for U.K. Appl. 9421970.6, mailed Feb. 16, 1995.
Surguy et al, Ferroelectrics, 1991, vol. 122, pp. 63-79, "The Joers/Alvey Ferroelectric Multiplexing Scheme".
Hughes et al, Liquid Crystals, 1993, vol. 13, No. 4, pp. 597-601, "A New Set of High Speed Matrix Addressing Schemes for . . . ".
European Search Report for Application EP 95307751.8; mailed Nov. 28, 1996.
Sugihara et al., AES Journal of the Audio Engineering Society, 37 (1989) Oct., No. 10, "Ferroelectric Liquid Crystal Shutters for Half-tone Recording", pp. 123-130.
Jones et al, Displays, vol. 14, No. 2, 1993, "Fast, High-Contrast Ferroelectric Liquid Crystal Displays and the Role of Dielectric Biaxiality", pp. 86-93.

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