Pixel driving circuit, driving method thereof, and display device

Abstract

The present invention provides a pixel driving circuit, its driving method, and a display device. The circuit includes: a first signal line; a second signal line; a third signal line; a first switch module, a first terminal, a control terminal and a second terminal respectively connected with the first and second signal lines and the first node; the charge storage module, the first terminal is connected with the first node; the second switch module, the first terminal and the control terminal are respectively connected with the second terminal and the first terminal of the charge storage module node connection; the first terminal, the control terminal and the second terminal of the third switch module are respectively connected to the first and third signal lines and the second terminal of the second switch module; the fourth switch module, the first terminal, the control terminal, The second end is respectively connected with one end of the light emitting module, the control end and the first end of the second switch module. The invention does not need to set a drive compensation circuit, the circuit structure is simple, and can provide a larger current for the light-emitting module in the state of high display brightness value, and can ensure the response speed of the circuit in the state of low display brightness value.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit, a driving method of the pixel driving circuit and a display device. Background technique [0002] Organic light-emitting display devices have the advantages of high brightness, wide viewing angle, fast response speed, low power consumption, etc., and have been widely used in the field of high-performance displays. In the related art, a pixel driving circuit of an organic light emitting display device is provided with a driving compensation circuit. [0003] However, the pixel driving circuit in the related art still has the following defects: [0004] 1. The drive compensation circuit leads to a complex structure of the pixel drive circuit, which occupies a large area in the design and layout of the display device, which is not conducive to the future high PPI (Pixel Per Inch, the number of pixels per inch) AMOLED (Active-matrix organic light- ...

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Problems solved by technology

[0006] In view of the above problems, the purpose of the embodiments of the present invention is to provide a pixel driving circuit, a display device, and a driving method of the pixel driving circuit, so as to solve the problem that the structure of the pixel driving circuit in the related art is complicated and the driving current range of the driving tube is restricted. limit problem

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