Liquid crystal display device with driving method to eliminate b

Details Liquid crystal display device with driving method to eliminate b Liquid crystal display device with driving method to eliminate b

1985-08-19

1987-10-20

Miller, Stanely D.

G02F 113

Patent

active

047010258

ABSTRACT:
Between a liquid crystal module and a control circuit for controlling said liquid crystal module, there are provided that a counter circuit for counting down a timing signal given by said control circuit and an exclusive-OR circuit whose inputs are square wave pulses delivered from said counter circuit and square wave pulses given by said control circuit with a period of twice the frame period. The polarity of voltages applied to liquid crystal module is reversed by square wave pulses delivered from the exclusive-OR circuit with frequency higher than the frame frequency.

REFERENCES:
patent: 3995942 (1976-12-01), Kawakami et al.
patent: 4404555 (1983-07-01), Long et al.
patent: 4485380 (1984-11-01), Soneda et al.
patent: 4638310 (1987-01-01), Ayliffe
patent: 4640582 (1987-02-01), Oguchi et al.

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