OLED pixel circuit, driving method of OLED pixel circuit and display device

Abstract

The invention relates to the technical field of display, and in particular relates to an OLED pixel circuit, a driving method of the OLED pixel circuit and a display device. The phenomenon of screen splashing when a display panel is started up or the sleeping is awakened can be eliminated. The OLED pixel circuit comprises an initialization module, a data write-in and compensation module, a driver module and a light-emitting control module, wherein the initialization module is respectively connected to the driver module, a first signal end, a first voltage end and an initial voltage end, and is used for initializing the driver module; the data write-in and compensation module is respectively connected to the driver module, a scanning signal end and a data voltage end, and is used for carrying out compensation of threshold voltage on the driver module; the driver module is further connected to the light-emitting control module and the first voltage end, and is used for driving a light-emitting module to emit light after the compensation of the threshold voltage is obtained; and the light-emitting control module is further connected to the light-emitting module, an enable signal end, a second voltage end, a second signal end and a third voltage end, and is used for turning on or turning off the light-emitting module under the control of the enable signal end, the second voltage end, the second signal end and the third voltage end.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED pixel circuit, a driving method thereof, and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) display is one of the hotspots in the current research field. Compared with Liquid Crystal Display (LCD), OLED has low energy consumption, low production cost, self-illumination, and wide viewing angle. And corresponding advantages such as fast speed. Among them, pixel circuit design is the core technical content of OLED display, which has important research significance. [0003] The display area of ​​the display panel includes a plurality of OLED pixel circuits. Since the circuit of each OLED pixel circuit is unstable when the first frame is displayed, the turn-on degree of the driving transistor in each OLED pixel circuit is not uniform, resulting in the driven The magnitude of the current flowing from the transistor to the light-emitting ...

AI Technical Summary

Problems solved by technology

[0003] The display area of ​​the display panel includes a plurality of OLED pixel circuits. Since the circuit of each OLED pixel circuit is unstable when the first frame is displayed, the turn-on degree of the driving transistor in each OLED pixel circuit is not uniform, resulting in the driven The magnitude of the current flowing from the transistor to the light-emitting device is not uniform, which causes the display panel to have problems such as power-on splash screen, sleep wake-up splash screen, etc.

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