Liquid crystal display cell driving circuit

Details Liquid crystal display cell driving circuit Liquid crystal display cell driving circuit

1975-05-02

1977-07-26

Bauer, Edward S.

Communications: electrical

Land vehicle alarms or indicators

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

340336, 307310, G02F 118

Patent

active

040379310

ABSTRACT:
A liquid crystal display cell driving circuit adapted to apply a stabilized DC drive voltage having a temperature characteristic corresponding to the temperature characteristic of the display cell is provided. A power source includes a DC converter coupled to the display cell for applying a DC drive voltage thereto. A feedback control circuit is coupled to the DC converter for stabilizing the DC drive voltage. The feedback control circuit further includes a temperature dependent reference voltage means, for effecting a temperature adjustment of the DC drive voltage corresponding to the temperature characteristic of the liquid crystal display cell.

REFERENCES:
patent: 3192405 (1965-06-01), Patchell
patent: 3219843 (1965-11-01), Follett
patent: 3921162 (1975-11-01), Fukai
Collins, John R., "Temperature Sensitive Devices", Electronic World, Oct. 1964, p. 52.
Yhap, E. F., "Transistor with small Temperature Dependence", IBM Technical Disclosure Bulletin, vol. 4, No. 10, Mar. 1962, p. 60.

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