公开(公告)号：US20130314342A1

公开(公告)日：2013-11-28

申请号：US13712753

申请日：2012-12-12

Applicant: LG DISPLAY CO., LTD.

Inventor： Sungchul KIM ,  Junghan LEE

IPC: G06F3/041

CPC classification number: G06F3/0412 ,  G06F3/041 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04111

Abstract: A touch sensing device includes a touch screen coupled with a display panel including data lines, gate lines crossing the data lines, and pixels arranged in a matrix form, and a touch sensing circuit which supplies a driving signal to lines of the touch screen and senses a touch input. The touch sensing circuit detects an optimum sensing time, in which changes in a voltage change of the gate lines are maintained within a previously determined allowable range, in a touch screen drive period in which data is not written to the pixels of the display panel. The touch sensing circuit supplies the driving signal to the lines of the touch screen only in the optimum sensing time of the touch screen drive period.

Abstract translation: 触摸感测装置包括与显示面板耦合的触摸屏，该显示面板包括数据线，与数据线交叉的栅极线和以矩阵形式布置的像素;以及触摸感测电路，其将驱动信号提供给触摸屏的线并感测 触摸输入。 触摸感测电路在没有向显示面板的像素写入数据的触摸屏驱动周期中，检测出最佳感测时间，其中栅极线的电压变化的变化保持在预先确定的容许范围内。 触摸感测电路仅在触摸屏驱动周期的最佳感测时间内将驱动信号提供给触摸屏的线。