TOUCH PANEL AND DRIVE CIRCUIT THEREOF

摘要

A drive circuit of a touch panel includes a signal selection circuit and a de-multiplexing circuit, where in a display phase, the signal selection circuit is configured to forward a display signal to the de-multiplexing circuit, which is configured to de-multiplex the display signal and transmit signals resulting from the de-multiplexing of the display signal to the data lines; and in a touch phase, the signal selection circuit is configured to forward a touch driving signal to the de-multiplexing circuit, which is configured to de-multiplex the touch driving signal and transmit signals resulting from the de-multiplexing of the touch driving signal to the data lines, so that the pulse signals on the data lines are identical to the pulse signals on the touch driving signal lines and touch electrodes in the touch phase due to the signal selection circuit.

主权项

1. A drive circuit of a touch panel, comprising a signal selection circuit and a de-multiplexing circuit,
wherein a first input terminal of the signal selection circuit is connected with a touch driving signal input line for transmission of a touch driving signal, a second input terminal of the signal selection circuit is connected with a display signal input line for transmission of a display signal, and an output terminal of the signal selection circuit is connected with an input terminal of the de-multiplexing circuit; an output terminal of the de-multiplexing circuit is connected with a plurality of pixel electrodes through respective data lines; in a display phase, the signal selection circuit is configured to forward the display signal received from the display signal input line to the de-multiplexing circuit, which is configured to de-multiplex the display signal from the signal selection circuit and transmit signals resulting from the de-multiplexing of the display signal to the data lines; and in a touch phase, the signal selection circuit is configured to forward the touch driving signal received from the touch driving signal input line to the de-multiplexing circuit, which is configured to de-multiplex the touch driving signal from the signal selection circuit and transmit signals resulting from the de-multiplexing of the touch driving signal to the data lines.