Patent ID: 9658710
Date: 2017-05-23
CPC Classifications: G06F,G09G

Claim:
1. A pixel circuit, comprising a first storage capacitor, a driving transistor, and an organic light-emitting diode (OLED), wherein a first electrode of the driving transistor is connected to a first signal source, a gate electrode of the driving transistor is connected to a second end of the first storage capacitor, and a second electrode of the driving transistor is connected to an anode of the OLED, the pixel circuit further comprises: a display driving module, connected to a first scanning line, a second scanning line, a data line, the first signal source, a second signal source, a first end and the second end of the first storage capacitor, and configured to, within a time period, compensate for a threshold voltage of the driving transistor using a data signal from the data line and a first signal from the first signal source under the control of a first scanning signal from the first scanning line and the second scanning signal from the second scanning line, to make a light-emitting driving signal for the OLED be irrelevant to the threshold voltage of the driving transistor within a fourth stage of the time period; and a touch detection module, connected to the first scanning line, the second scanning line and a signal read line, and configured to, within the time period, detect a touch signal for a touch panel under the control of the first scanning signal from the first scanning line and the second scanning signal from the second scanning line; wherein the display driving module comprises a first thin film transistor (TFT), a second TFT, a third TFT, a fourth TFT and a fifth TFT; a first electrode of the first TFT is connected to the first signal source, a gate electrode of the first TFT is connected to the second scanning line, and a second electrode of the first TFT is connected to the first electrode of the driving transistor; a first electrode of the second TFT is connected to the first electrode of the driving transistor, a gate electrode of the second TFT is connected to the first scanning line, and a second electrode of the second TFT is connected to the second end of the first storage capacitor; a first electrode of the third TFT is connected to the data line, a gate electrode of the third TFT is connected to the first scanning line, and a second electrode of the third TFT is connected to the first end of the first storage capacitor; a first electrode of the fourth TFT is connected to the first end of the first storage capacitor, a gate electrode of the fourth TFT is connected to the second scanning line, and a second electrode of the fourth TFT is connected to the second electrode of the driving transistor; and a first electrode of the fifth TFT is connected to the second electrode of the driving transistor, a gate electrode of the fifth TFT is connected to the first scanning line, and a second electrode of the fifth TFT is connected to the second signal source.