TOUCH CONTROL DRIVE CIRCUIT, EMBEDDED OPTICAL TOUCH SCREEN, AND DISPLAY APPARATUS

摘要

Disclosed are a touch drive circuit, an embedded optical touch screen, and a display apparatus. The touch control circuit comprises: a photo-sensitive submodule, a data writing submodule, a drive submodule, and a control submodule. Under the control of a scanning signal, the data writing submodule transmits a scanning signal of a scanning signal end to the drive submodule. When the scanning signal controls the drive submodule to be enabled, the drive submodule outputs a touch control-sensitive signal to the control submodule, and the touch control-sensitive signal fades as light shone on the photo-sensitive submodule is strengthened. Under the control of a control signal end, the control submodule inputs the touch control-sensitive signal to a touch control signal reading end, to implement a touch control function. Compared with a drive circuit of an existing embedded optical touch screen, the control submodule controls the drive submodule to transmit the touch control-sensitive signal to the touch control signal reading end, so that when a touch control signal reading end of each drive circuit is connected to a same touch control signal reading line, mutual interference between signals output by different drive circuits can be avoided.