Patent ID: 9666122
Date: 2017-05-30
CPC Classifications: G06F,G09G

Claim:
1. A method for driving an AMOLED-based touch display panel, comprising: when driving the AMOLED-based touch display panel to display, dividing one cycle of driving sequence into a display stage and a touch-sense stage; in the display stage, applying a direct-current voltage signal to all of power source signal lines as power source voltage of a pixel circuit; and in the touch-sense stage, logically classifying all of the power source signal lines into a first group of power source signal lines and a second group of power source signal lines, and the first group of power source signal lines and the second group of power source signal lines being disposed on a substrate of the AMOLED-based touch display panel to be perpendicular to each other; and during the touch-sense stage, applying a pulse signal to the first group of power source signal lines, and determining the position of a touch point by detecting a variation of a signal on the second group of power source signal lines, wherein, the pixel circuit comprises an AMOLED and a driving transistor configured to generate current for driving the AMOLED to emit light, the current being independent of the variations of the direct-current voltage signal, and wherein, the one cycle of driving sequence comprises N frames, an N-th frame thereof is divided into a first time period and a second time period, preceding N−1 frames and the first time period of the N-th frame are defined as the display stages, and the second time period of the N-th frame are defined as the touch-sense stage, wherein, N is an integer not less than 2.