Pixel circuit

Abstract

A pixel circuit comprises five transistors, two capacitors and an organic light-emitting diode. First terminals of the first transistor and the third transistor are electrically coupled to a first power voltage. A first terminal of the second transistor is electrically coupled to a second terminal of the first transistor and a first terminal of the fourth transistor; a second terminal of the second transistor is electrically coupled to a second terminal of the fifth transistor and a first terminal of the first capacitor and is coupled to a second power voltage electrically through the organic light-emitting diode; a control terminal of the second transistor is electrically coupled to a second terminal of the fourth transistor and a first terminal of the second capacitor; and a second terminal of the third transistor is electrically coupled to second terminals of the first and second capacitors.

Description

technical field [0001] The present invention relates to the display technology field of organic light emitting diodes, in particular to a pixel circuit of organic light emitting diodes. Background technique [0002] Each pixel circuit in an Organic Light Emitting Diode (OLED) display device generally uses two transistors and a capacitor to control the brightness performance of the OLED. However, the circuit design of existing pixel circuits often causes the problem of uneven panel display, and figure 1 To explain it. [0003] figure 1 It is a schematic diagram of a conventional pixel circuit. Such as figure 1 As shown, the pixel circuit 100 is generally composed of two transistors 101 and 102 , a capacitor 103 and an organic light emitting diode 110 . Each transistor has a first terminal, a second terminal and a control terminal. The first end of the transistor 101 is directly electrically coupled to the power supply voltage OVDD. The first terminal of the transistor ...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a pixel circuit, which

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