Pixel circuit, driving method thereof and pixel array structure

摘要

Disclosed are a pixel circuit, a driving method thereof and a pixel array structure. The pixel circuit comprises a load controlling module(101), a load module(102), a gray scale selection module(103), a driving module(104) and a light-emitting device(105). The load controlling module(101) outputs an analog data signal through a first node and a second node under the control of a first scan signal (scan1). The load module(102) is connected with a first power supply terminal(VSS), the driving module(104), the first node(A1) and the second node(A2), respectively, and stores the analog data signal in the load module(102) and provides the driving module(104) with the analog data signal under the control of signals from the first node and the second node. The gray scale selection module(103) transmits a digital data signal to a third node(A3) located in the gray scale selection module(103) under the control of a second scan signal (scan2). The driving module(104) drives the light-emitting device(105) under the control of the signals from the second node and the third node. A first terminal of the light-emitting device(105) is connected with a second power supply terminal(VDD), a second terminal thereof is connected with the driving module(104). The pixel circuit is capable of reducing a charging time of an OLED pixel circuit.

主权项

1. A pixel circuit comprising a load controlling module, a load module, a gray scale selection module, a driving module and a light-emitting device, wherein:
the load controlling module is connected with a first scan signal line and a data signal line, and is used for outputting an analog data signal through a first node and a second node under a control of a first scan signal; the load module is connected with a first power supply terminal, the driving module, the first node and the second node, respectively, and is used for storing the analog data signal under an action of a first power supply and providing the driving module with the analog data signal, under controls of signals from the first node and the second node; the gray scale selection module is connected with a second scan signal line and the data signal line, and is used for transmitting a digital data signal to a third node located in the gray scale selection module under a control of a second scan signal; the driving module is used for driving the light-emitting device under controls of the signals from the second node and the third node; and a first terminal of the light-emitting device is connected with a second power supply terminal, a second terminal thereof is connected with the driving module, and the light-emitting device emits light under actions of the second power supply and the driving module.