Liquid crystal display driver

Details Liquid crystal display driver Liquid crystal display driver

1989-09-05

1991-01-01

Miller, Stanley D.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

350336, 340765, G02F 113

Patent

active

049813390

ABSTRACT:
A liquid crystal display driver has a 1/4-duty binary-voltage driving system. This driving system generates at least four separate common signals and at least eleven separate segment signals. Although the duty cycle is 1/4. V.sub.on /V.sub.off ratio of the effective value is greater than 1.7. This is accomplished by using four common electrodes and seven segment electrode per each individual pattern generator.

REFERENCES:
patent: 3820108 (1974-06-01), Luce
patent: 4087861 (1978-05-01), Futagawa et al.
patent: 4113361 (1978-09-01), Nakano
patent: 4281901 (1981-08-01), Uriyama
patent: 4288792 (1981-09-01), Sado et al.
patent: 4356483 (1982-10-01), Fujita et al.
patent: 4448490 (1984-05-01), Shibuya et al.
patent: 4533213 (1985-08-01), Wasdizuka et al.

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