公开(公告)号：US20020080133A1

公开(公告)日：2002-06-27

申请号：US09893985

申请日：2001-06-29

Applicant: LG.Philips LCD Co., Ltd.

Inventor： Jung-Taeck Eu

IPC: G09G005/00

CPC classification number: G09G3/3648 ,  G09G2310/0245 ,  G09G2320/0257 ,  G09G2330/027

Abstract: A discharging apparatus for a liquid crystal display is provided for substantially reducing a residual image upon power-off. In the apparatus, a gate driver integrated circuit selectively applies first and second gate voltages to gate lines of the display. A discharge circuit is coupled to the gate driver integrated circuit and senses a power-off state of a power supply line. When a power-off state is sensed, a short-circuit if formed between the first gate voltage supply line and the second gate voltage supply line, thereby discharging voltages on the gate lines. Accordingly, a gate low voltage relative gate high (pixel turn-on) voltage is discharged upon power-off to define a discharge path via the gate line, thereby rapidly discharging electric charges charged in the liquid crystal display panel.

Abstract translation: 提供一种用于液晶显示器的放电装置，用于在断电时基本上减少残留图像。 在该装置中，栅极驱动器集成电路选择性地将第一和第二栅极电压施加到显示器的栅极线。 放电电路耦合到栅极驱动器集成电路并感测电源线的断电状态。 当检测到电源关闭状态时，如果在第一栅极电压供应线和第二栅极电压供应线之间形成短路，从而放电栅极线上的电压。 因此，在断电时，栅极低电压相对栅极高（像素导通）电压被放电以经由栅极线限定放电路径，从而快速放电充电在液晶显示面板中的电荷。