DRIVING CIRCUIT AND DRIVING METHOD FOR TOUCH DEVICE, TOUCH DEVICE, AND DISPLAY DEVICE

摘要

The present disclosure provides a driving circuit and a driving method for a touch device, a touch device and a display device. The driving circuit includes an operational amplifier and a control circuit. A negative input terminal of the operational amplifier is connected with a touch-sensing electrode included in the touch device, and a positive input terminal of the operational amplifier is connected with the control circuit. The control circuit is to, at a touch stage, adjust a voltage at the positive input terminal of the operational amplifier to be within a first predetermined voltage range so as to control the touch-sensing electrode to implement a touch sensing operation, and at a display stage, adjust the voltage at the positive input terminal of the operational amplifier to be within a second predetermined voltage range so as to shield external static electricity.

主权项

1. A driving circuit for a touch device which comprises a touch-sensing electrode, the driving circuit comprising:
an operational amplifier, and a control circuit; wherein a negative input terminal of the operational amplifier is connected with the touch-sensing electrode; a positive input terminal of the operational amplifier is connected with the control circuit; and wherein the control circuit is configured to, at a touch stage, adjust a voltage at the positive input terminal of the operational amplifier to be within a first predetermined voltage range so as to control the touch-sensing electrode to implement a touch sensing operation; and at a display stage, adjust the voltage at the positive input terminal of the operational amplifier to be within a second predetermined voltage range so as to shield external static electricity.