TOUCH POINT POSITIONING AND DETECTION CIRCUIT, OPTICAL TOUCHSCREEN AND DISPLAY DEVICE

摘要

The present invention relates to the technical field of touch display. Disclosed are a touch point localization detection circuit, an optical touchscreen and a display device, which are used to improve the touch control accuracy of a touchscreen. The touch point positioning and detection circuit comprises: an optical touch control sub-circuit used for sensing a touch and generating a touch signal, an amplification sub-circuit connected to the optical touch control sub-circuit and used for amplifying the touch signal, an output sub-circuit connected to the amplification sub-circuit and used for outputting the touch signal, and a detection sub-circuit connected to the output sub-circuit and determining the position of a touch point according to the output touch signal.