Patent ID: 9746973
Date: 2017-08-29
CPC Classifications: G02F,G06F

Claim:
1. A method for driving an in-cell touch panel, comprising: in a touch period of time for displaying each frame of the touch panel, applying touch detection signals to self-capacitance electrodes connected with leads in the touch panel respectively through the leads, receiving touch sensing signals, obtained from feedback of the touch detection signals via the self-capacitance electrodes, respectively through the leads, and determining a touch area in the touch panel according to difference between the touch sensing signals and the touch detection signals and positions of the self-capacitance electrodes connected with the leads; taking a self-capacitance electrode connected with a lead in the touch area as a first touch electrode, and taking a self-capacitance electrode adjacent to the first touch electrode as a second touch electrode; applying touch scanning signals to the first touch electrode and receiving touch sensing signals obtained by coupling of the touch scanning signals via the second touch electrode; or applying touch scanning signals to the second touch electrode and receiving touch sensing signals obtained by coupling of the touch scanning signals via the first touch electrode; and determining a touch position in the touch area according to difference between the touch sensing signals and the touch scanning signals and positions of the first touch electrode and the second touch electrode.