TOUCH DISPLAY CIRCUIT, ITS DRIVING METHOD, TOUCH DISPLAY PANEL AND DISPLAY DEVICE

摘要

The present disclosure provides a touch display circuit, a driving method thereof, a touch display panel and a display device. During a touching stage, the touch triggering module is configured to supply a signal of the trigger signal terminal to the pulling-up node, the first outputting module is configured to supply a signal of the first clock signal terminal to the touch signal outputting terminal, the resetting module is configured to supply a signal of the first reference signal terminal to the pulling-up node and the second outputting module is configured to supply a signal of the second reference signal terminal to the touch signal outputting terminal, so as to implement a touching function. During a displaying stage, the display switching module is configured to supply a signal of the common electrode signal terminal to the touch signal outputting terminal so as to implement a displaying function. The touch display circuit implements a time division output of the touch signal and the common electrode signal at the touch signal outputting terminal by cooperation of the respective module and implements a touch display circuit with a simple configuration so as to facilitate a design of the touch display panel with a narrow frame.

主权项

1. A touch display circuit, comprising a touch trigger module, a display switching module, a resetting module, a first outputting module and a second outputting module, wherein
an input terminal and a control terminal of the touch triggering module are connected to a trigger signal terminal, an output terminal of the touch triggering module is connected to a pulling-up node; the touch triggering module is configured to supply a signal of the trigger signal terminal to the pulling-up node under control of the trigger signal terminal; a control terminal of the display switching module is connected to a switch controlling terminal, an input terminal of the display switching module is connected to a common electrode signal terminal, and output terminal of the display switching module is connected to a touch signal outputting terminal; the display switching module is configured to supply a signal of the common electrode signal terminal to the touch signal outputting terminal under control of the switch controlling terminal; a control terminal of the resetting module is connected to a resetting signal terminal, an input terminal of the resetting module is connected to a first reference signal terminal, an output terminal of the resetting module is connected to the pulling-up node; the resetting module is configured to supply a signal of the first reference signal terminal to the pulling-up node under control of the resetting signal terminal; a control terminal of the first outputting module is connected to the pulling-up node, an input terminal of the first outputting module is connected to a first clock signal terminal, and an output terminal of the first outputting module is connected to the touch signal outputting terminal, the first outputting module is configured to supply a signal of the first clock signal terminal to the touch signal outputting terminal under control of the pulling-up node; a control terminal of the second outputting module is connected to a second clock signal terminal, an input terminal of the second outputting module is connected to a second reference signal terminal, and an output terminal of the second outputting module is connected to the touch signal outputting terminal; the second outputting module is configured to supply a signal of the second reference signal terminal to the touch signal outputting terminal under control of the second clock signal terminal ; during a touch stage, a phase of the signal of the first clock signal terminal is opposite to that of the signal of the second clock signal terminal.