| 摘要 |
PURPOSE:To prevent the deterioration in the display of a liquid crystal panel by the distortion voltage generated in the liquid crystal display panel itself by impressing the pulse voltage to offset the distortion voltage to electrode driving pulses. CONSTITUTION:A liquid crystal panel part 3 including the liquid crystal panel and a driver circuit for driving the scanning electrodes and signal electrodes in the liquid crystal panel is subjected to liquid crystal display control by using a control driving circuit consisting of a power supply circuit 1, a main control circuit 4, a timing control circuit 5, a distortion signal offsetting signal generating circuit 6 and an amplifier 8. The distortion signal offsetting signal generating circuit 6 superposes the pulse voltage having the time constant determined by the electrostatic capacity component of the liquid crystal 3 connected in operation to a resistor of the power supply circuit via the scanning electrodes of the panel 3 and the amplitude and pulse width determined according to plural voltage levels; i.e., the distortion signal offsetting signal, on the plural voltages. The distortion component generated in the liquid crystal display device is thereby offset and the deterioration in the display performance of the liquid crystal is prevented. |
