Patent ID: 9671906
Date: 2017-06-06
CPC Classifications: G06F,G09G

Claim:
1. A touch display circuit in a pixel unit, comprising: a touch unit and a display unit, wherein the touch unit and the display unit are located in one pixel unit; a first scanning line, a second scanning line, a detection signal line, a data line and a signal control line connected with the touch unit; and a gate line and the data line connected with the display unit, wherein the display unit and the touch unit share the same data line, and wherein the touch unit comprises a first switch transistor, a second switch transistor, a first capacitor, a touch electrode and an amplifier transistor; the source of the first switch transistor is connected to the data line, and the gate of the first switch transistor is connected to the signal control line; the touch electrode is connected to the drain of the first switch transistor; the gate of the amplifier transistor is connected to the touch electrode, and the source of the amplifier transistor is connected to the second scanning line; the gate of the second switch transistor is connected to the first scanning line, the source of the second switch transistor is connected to the drain of the amplifier transistor, and the drain of the second switch transistor is connected to the detection signal line; and a first electrode of the first capacitor is directly connected to the second scanning line, and a second electrode of the first capacitor is connected to the touch electrode, wherein the first electrode of the first capacitor is formed by the same layer of transparent conductive material as a pixel electrode of the display unit, and the second electrode of the first capacitor is formed by the same layer of transparent conductive material as a common electrode of the display unit.