Heater control apparatus for liquid crystal display with integra

Details Heater control apparatus for liquid crystal display with integra Heater control apparatus for liquid crystal display with integra

1986-03-24

1988-02-09

Miller, Stanley D.

Electric heating

Microwave heating

Tunnel furnace

350331T, 219209, 219210, G02F 113, H05B 100

Patent

active

047238356

ABSTRACT:
A heater control circuit for the integral heater of a liquid crystal display comprising solid state switches that simultaneously connect and disconnect the high side and low side of the heater from power and ground, respectively, in response to display temperature. A blend resistor is connected between the heater and ground to bleed off accumulated charge that would erroneously drive one of the solid state switches into conduction.

REFERENCES:
patent: 4029393 (1977-06-01), Dungan et al.
patent: 4119842 (1978-10-01), Hayden et al.
patent: 4390874 (1983-06-01), Woodside et al.
patent: 4584461 (1986-04-01), Teshima et al.
patent: 4593977 (1986-06-01), Takamatsu et al.

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