Heater control apparatus for liquid crystal display with integral heater
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United States of America Patent
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Feb 9, 1988
Grant Date -
N/A
app pub date -
Mar 24, 1986
filing date -
Mar 24, 1986
priority date (Note) -
Expired
status (Latency Note)
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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.
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