PIXEL CIRCUIT, ITS DRIVING METHODS, ORGANIC LIGHT-EMITTING DIODE DISPLAY PANEL, AND DISPLAY DEVICE

摘要

The present disclosure provides a pixel circuit, its driving methods, an OLED display panel and a display device. The pixel circuit includes a driving controlling unit configured to, under the control of a first scanning signal and a second scanning signal, charge or discharge a first storage capacitor through a first level, a second level and a data voltage, so as to compensate for a threshold voltage of a driving transistor with a gate-to-source voltage of the driving transistor when an OLED is driven by the driving transistor to emit light; and a touch controlling unit including a touch sensor and configured to, under the control of the first scanning signal and the second scanning signal, sense by the touch sensor whether or not a touch is made and transmit a corresponding touch sensing signal to a touch signal reading line.

主权项

1. A pixel circuit, comprising a driving transistor, a first storage capacitor, and an organic light-emitting diode (OLED), a gate electrode of the driving transistor being connected to a first end of the first storage capacitor, a first electrode of the driving transistor being connected to an anode of the OLED, and a cathode of the OLED being configured to receive a first level, the pixel circuit further comprising:
a driving controlling unit connected to the first end of the first storage capacitor, a second end of the first storage capacitor, the first electrode of the driving transistor and a second electrode of the driving transistor, and configured to, under the control of a first scanning signal and a second scanning signal, charge or discharge the first storage capacitor through the first level, a second level and a data voltage, so as to compensate for a threshold voltage of the driving transistor with a gate-to-source voltage of the driving transistor when the OLED is driven by the driving transistor to emit light; and a touch controlling unit connected to the second end of the first storage capacitor and a touch signal reading line, and including a touch sensor and configured to, under the control of the first scanning signal and the second scanning signal, sense by the touch sensor whether or not a touch is made and transmit a corresponding touch sensing signal to the touch signal reading line.