Patent ID: 9626051
Date: 2017-04-18
CPC Classifications: G06F

Claim:
1. A touch display panel, comprising: an array substrate comprising a first transparent substrate; an opposing substrate comprising a second transparent substrate; a common electrode layer formed on the first transparent substrate; touch sensing electrodes formed on one surface of the second transparent substrate of the opposing substrate, the one surface facing the array substrate; and gate lines and data lines arranged in the array substrate, wherein the common electrode layer is configured as first common electrodes in a display period, and at least one part of the common electrode layer is configured as touch driving electrodes in a touch period, wherein the touch sensing electrodes and the at least one part of the common electrode layer configured as the touch driving electrodes intersect each other, wherein second common electrodes are disposed on the array substrate and arranged on a periphery of pixel electrodes, and the second common electrodes at least partially cover the gate lines and the data lines, wherein the first common electrodes and the second common electrodes are connected with each other through operational amplifiers so as to be physically isolated, and a voltage of the first common electrodes is equal to a voltage of the second common electrodes, and wherein the first common electrodes are connected with positive input ends of the operational amplifiers, negative feedbacks of the second common electrodes are connected to negative input ends of the operational amplifiers, and outputs of the operational amplifiers are connected to the second common electrodes.