Cushman, Darby & Cushman
Liquid crystal element driving apparatus
 An apparatus for driving a liquid crystal element by an increased voltage and at a lowered frequency in conformity with temperature fall in the liquid crystal element so as to achieve complete driving of the element even in a low temperature range. In order to increase the driving voltage, the apparatus comprises a booster circuit for increasing a battery voltage, and a voltage divider circuit including an element-temperature sensor as a component thereof and serving to produce a control voltage by dividing the output voltage of the booster circuit. In such configuration, the booster circuit performs its operation in such a manner as to maintain constant the control voltage obtained from the voltage divider circuit. 
Nippondenso Co., Ltd.
B G
B60R G02F
inventional inventional
Kunihiko Yasutoshi Tsuyoshi Hiroshi Shinya
Hara Suzuki Fukada Itoh Ohmi