Pixel circuit, array substrate and display device

Abstract

The invention provides a pixel circuit, an array substrate and a display device. The pixel circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a driving transistor, a first capacitor and a second capacitor. By means of cooperation of the transistors and the capacitors, drive current which is generated by the driving transistor and used for driving a light emitting element to emit light is unrelated to intrinsic threshold voltage of the driving transistor, threshold shift caused by techniques is compensated, the problem of nonuniformity in light emission of the display device is solved, and uniformity in light emission of the display device is improved; in addition, the threshold voltage of the driving transistor is compensated by means of source following, and accordingly hysteresis is avoided.

Description

technical field

[0001] The present invention relates to the technical field of organic light-emitting display, and more specifically, relates to a pixel circuit, an array substrate and a display device. Background technique

[0002] With the continuous development of multimedia, organic light emitting diode (Organic Light Emitting Diode, OLED) display has attracted attention in the display market due to its simple structure, excellent operating temperature, contrast ratio, viewing angle and other advantages. Organic light emitting diode displays include passive matrix OLED displays and active matrix OLED displays, and active matrix OLED displays are widely used due to low power consumption. refer to figure 1 Shown is a circuit diagram of an existing pixel circuit in an organic light emitting diode display. Most of the existing pixel circuits adopt a 2T1C structure, that is, include two transistors and a capacitor. Wherein, the transistor M20 is used as a current driving tr...

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