DISPLAY DEVICE AND DISPLAYING METHOD, LIQUID CRYSTAL DRIVING CIRCUIT AND LIQUID CRYSTAL DRIVING METHOD

摘要

PROBLEM TO BE SOLVED: To apply a voltage between pixel electrodes by switching reference voltages to be connected to drivers. SOLUTION: The voltage values of a reference voltage GNDc supplied to a column driver and a reference voltage GNDr supplied to a row driver are GND (0V). The voltage GNDr is connected to row electrodes X1 to X3 and the voltage GNDc is connected to column electrodes Y1 to Y3. Then a switch is controlled so as to supply a voltage (V1+V2) to the GNDr over a specified time width and so as to supply a voltage (-V1-V2) to the GNDc over a specified time width on the next timing. Thereby bipolar pulses of (V1+V2) is applied between pixel electrodes of pixels from (X1, Y1) to (X3, Y3) and consequently a cholesteric liquid crystal layer between the two electrodes turns into a planar state so as to reset the entire full surface to the planar state. This invention is applicable to a liquid crystal display device and to a driving circuit of the liquid crystal display device. COPYRIGHT: (C)2004,JPO&NCIPI