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CN103176676A 一种触摸屏触摸点定位检测电路、触摸屏及显示装置 失效 - 权利终止

一种触摸屏触摸点定位检测电路、触摸屏及显示装置
摘要：
本发明公开了一种触摸屏触摸点定位检测电路、触摸屏及显示装置，用以实现一种光学式的内嵌式触摸屏。所述检测电路包括：触摸传感子电路、与该触摸传感子电路相连的探测子电路，以及第一触摸驱动电极线和第二触摸驱动电极线；所述触摸传感子电路包括：电容、第一开关晶体管和第二开关晶体管；所述第一开关晶体管的栅极和源极与所述第一触摸驱动电极线相连，漏极与所述第二开关晶体管的漏极相连；所述第二开关晶体管的源极与所述探测子电路相连，栅极与所述第二触摸驱动电极线相连；所述电容的一端与所述第一开关晶体管的漏极相连，另一端与提供高电平电压的电极线相连；所述第一开关晶体管为光学开关晶体管。
摘要（英）：

The invention discloses a touch screen touch point location detection circuit, a touch screen and a display device. The touch screen touch point location detection circuit, the touch screen and the display device aim at achieving an optical type embedded type touch screen. The detection circuit comprises a touch sensing sub circuit, a detection sub circuit connected with the touch sensing sub circuit, and a first touch drive electrode wire and a second touch drive electrode wire. The touch sensing sub circuit comprises a capacitor, a first switch transistor and a second switch transistor. A grid and a source electrode of the first switch transistor are connected with the touch drive electrode wire. A drain electrode of the first switch transistor is connected with a drain electrode of the second switch transistor. A source electrode of the second switch transistor is connected with the detection sub circuit. A grid of the second switch transistor is connected with the second touch drive electrode wire. One end of the capacitor is connected with the drain electrode of the first switch transistor. The other end of the capacitor is connected with an electrode wire which provides high level voltage. The first switch transistor is an optical switch transistor.

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