Liquid crystal display driver and driver method

Details Liquid crystal display driver and driver method Liquid crystal display driver and driver method

1990-05-02

1993-03-30

Beha, Jr., William H.

Electricity: power supply or regulation systems

Input level responsive

Using a linearly acting final control device

307491, 323354, 340784, G05F 508

Patent

active

051987473

ABSTRACT:
An LCD drive circuit includes a voltage divider circuitry which generates a plurality of voltages (V.sub.1 -V.sub.5) in response to a reference voltage. A substantially constant reference voltage is generated by a band-gap reference circuit (22). A digital-to-analog converter (32) allows the voltages to be adjusted responsive to digital control signals.

REFERENCES:
patent: 4396883 (1983-08-01), Holloway et al.
patent: 4797577 (1989-01-01), Hing
patent: 4808908 (1989-02-01), Lewis et al.
patent: 4810948 (1989-03-01), Takuma

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