Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1986-06-23
1988-05-17
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340765, 340791, 340805, G09G 336
Patent
active
047454032
ABSTRACT:
A controller for a liquid crystal display has temperature detecting means which detect a temperature of the liquid crystal. Signal processing means which are connected to the temperature detecting means controls the timing of application of driving voltage to picture elements is delayed by a predetermined time in accordance with the temperature, in such a manner that a rise curve of the voltage response characteristic for light transmittances in those picture elements and a fall curve thereof pass through a common threshold of light transmittance at the same time. Driving voltages generating means connected to the signal processing means drives the liquid crystal display based on the control signal from the signal processing means. The controller can prevent display errors based on lowering of the voltage response of liquid crystal at a lower temperature range, and particularly can prevent transitional display errors caused by display switching.
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patent: 4057325 (1977-11-01), Kondo
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patent: 4419654 (1983-12-01), Funk
patent: 4462027 (1984-07-01), Lloyd
Curtis Marshall M.
Nippondenso Co. Ltd.
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