| 摘要 |
The present disclosure relates to the field of organic light-emitting display, and provides a pixel circuit, a driving method thereof, an organic light-emitting display panel and a display apparatus, comprising a driving transistor, a first storage capacitor, a collecting unit, a writing unit and a light-emitting unit; wherein, the collecting unit is used. for collecting the threshold voltage of the driving transistor and storing the threshold voltage into the first storage capacitor, under the control of the first scan signal; the writing unit is used for storing the data voltage inputted from the input terminal for the data voltage under the control of the second scan signal; and the light-emitting unit is used for emitting lights, driven by the data voltage and a voltage inputted from the input terminal for the controllable low voltage, under the control of the light-emitting control signal. Thus an organic light-emitting device is not affected by the threshold voltage shift of the driving transistor, which may enhance the image uniformity of the organic light-emitting display panel effectively, slow down the decay speed of an organic light-emitting device and ensure the uniformity and a constancy of brightness of the organic light-emitting display panel. |
| 主权项 |
1. A pixel circuit comprising a driving transistor, a first storage capacitor, a collecting unit, a writing unit and a light-emitting unit; wherein,
a source of the driving transistor is connected with an input terminal for a power supply voltage; a first terminal of the first storage capacitor is connected with a gate of the driving transistor; the collecting unit is connected with an input terminal for a first scan signal, an input terminal for a controllable low voltage, the driving transistor, the first terminal of the first storage capacitor, the writing unit and the light-emitting unit, respectively, and is used for collecting a threshold voltage of the driving transistor and storing the threshold voltage into the first storage capacitor, under the control of the first scan signal; the writing unit is connected with an input terminal for a second scan signal, an input terminal for a data voltage, the input terminal for the controllable low voltage, a second terminal of the first storage capacitor and the collecting unit, respectively, and is used for storing the data voltage inputted from the input terminal for the data voltage under the control of the second scan signal; and the light-emitting unit is connected with an input terminal for an light-emitting control signal, a drain of the driving transistor and the collecting unit, respectively, and is used for emitting lights driven by the data voltage and a voltage inputted from the input terminal for the controllable low voltage, under the control of the light-emitting control signal. |
