发明名称 LIQUID CRYSTAL DISPLAY DEVICE
摘要 <p>PROBLEM TO BE SOLVED: To provide a liquid crystal display device capable of preventing 'an OFF persistence' to be generated on the display screen of a liquid crystal display element when the power source of the display device is turned OFF. SOLUTION: This device is a liquid crystal display device which is provided with a liquid crystal display element having plural pixels and plural video signal lines applying gradation voltages to the plural pixels and has discharging means which are provided in an area outside a display area and which discharge electric charges stored in the pixels when the power source is interrupted. Moreover, each pixel has active elements and the discharging means have transistors which are provided for every video signal line and which become ON for a fixed time after the power source is interrupted and capacitive elements which are provided for every video signal line and which supply voltages for turning respective active elements of the pixels ON to the respective video signal lines through the transistors when the power source is interrupted.</p>
申请公布号 JP2002055323(A) 申请公布日期 2002.02.20
申请号 JP20000244322 申请日期 2000.08.11
申请人 HITACHI LTD 发明人 SASAKI TORU;YONENO HITOSHI
分类号 G02F1/136;G02F1/133;G02F1/1368;G09G3/20;G09G3/36;(IPC1-7):G02F1/133 主分类号 G02F1/136
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