发明名称 APPARATUS FOR ELIMINATING RESIDUAL IMAGE IN LIQUID CRYSTAL DISPLAY DEVICE AND METHOD THEREFOR
摘要 PROBLEM TO BE SOLVED: To make it possible to rapidly eliminate residual images when a power source is turned off by maintaining the voltage on gate lines at the potential at which the channels of TFTs are opened during the time of a specified period when the power source is turned off, thereby discharging the charges charged in liquid crystal cells to a source line side. SOLUTION: A gate driver 20 successivelyy drives the pixels on a liquid crystal display panel 40 by one line each by successively supplying scanning pulses to (m) pieces of gate lines 11. A data driver 30 supplies the video signals corresponding to the logic values of video data of red, green and blue respectively to (n) pieces of data lines 13 in synchronization with the scanning palus. A gate low voltage generating section 4 subjects gate low voltage Vg1 to level shifting to the base potential GND or above to form the channels of TFTs (MN) when a supply power source is shut off, thereby allowing the charges charged in the liquid crystal cells 12 and auxiliary capacitors 14 to be discharged to the source line 13 side through the drains and sources of the TFTs (MN).
申请公布号 JP2000089193(A) 申请公布日期 2000.03.31
申请号 JP19990236218 申请日期 1999.08.23
申请人 LG ELECTRONICS INC 发明人 LEE HYUN CHANG;YOUN WON GYUN
分类号 G02F1/133;G09F9/30;G09G3/20;G09G3/36;(IPC1-7):G02F1/133 主分类号 G02F1/133
代理机构 代理人
主权项
地址