Patent ID: 8698770
Filing Date: 2014-04-15
Classification: G06F

Abstract:
1. An active touch system, comprising a touch substrate and sensing electrodes, the sensing electrodes are used for detecting a position of a finger of an operator or other touch object on the touch substrate, wherein the sensing electrodes comprise on the touch substrate active device units arranged in an array, sensing electrode units arranged in an array, and at least two groups of intersecting control electrode lines and detecting electrode lines, each control electrode line and each detecting electrode line are isolated by an insulating layer at an intersection thereof; and the sensing electrode units are connected to active devices, and the active devices are connected to the control electrode lines and the detecting electrode lines, wherein the control electrode lines are used to control on and off of the active devices, and the detecting electrode lines are used to apply touch excitation signals to the sensing electrode units and detect a leakage current of a sensing electrode to a touch object, wherein a position of the finger or other touch object on the touch substrate is determined by determines the sensing electrode unit generating the leakage current.