公开(公告)号：US20130234989A1

公开(公告)日：2013-09-12

申请号：US13872395

申请日：2013-04-29

Applicant: SITRONIX TECHNOLOGY CORP.

Inventor： CHIH-DE HUNG ,  CHENG-CHUNG YEH ,  TING-LONG KUO

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/041 ,  G06F3/045

Abstract: The present invention relates to a touch panel with a discharging function, which comprises a scanning bus, a sensing bus, a control unit, and a discharging circuit. The scanning bus is used for scanning a touch frame. The sensing bus interleaves with the scanning bus, and senses at least a touched location on the touch frame. The control unit is coupled to the scanning bus and the sensing bus 20′ for controlling them. The discharging circuit is coupled to the sensing bus or/and the scanning bus, and is controlled by the control unit for releasing the charges at the touched location or/and on the relevant path between the touched location and the buses. Thereby, by using a discharging circuit for releasing charges on the parasitic capacitor, the parasitic capacitance effect is avoided. Hence, the sensing accuracy of the touch panel is increased.

Abstract translation: 本发明涉及具有放电功能的触摸屏，其包括扫描总线，感测总线，控制单元和放电电路。 扫描总线用于扫描触摸框。 感测总线与扫描总线交错，并且至少感测触摸框上的触摸位置。 控制单元耦合到扫描总线和用于控制它们的感测总线20'。 放电电路耦合到感测总线或/和扫描总线，并且由控制单元控制，用于释放在触摸位置处和/或触摸位置与总线之间的相关路径上的电荷。 因此，通过使用用于释放寄生电容器上的电荷的放电电路，避免了寄生电容效应。 因此，触摸面板的感测精度提高。