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Pixel driving circuit, display panel and driving method

A technology of pixel driving circuit and driving method, which is applied to static indicators, instruments, etc., and can solve problems such as flickering of driving transistors

Pending Publication Date: 2020-12-22
XIAMEN TIANMA MICRO ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a pixel driving circuit, a display panel and a driving method to solve the flicker problem caused by the hysteresis effect of the driving transistor

Method used

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  • Pixel driving circuit, display panel and driving method
  • Pixel driving circuit, display panel and driving method
  • Pixel driving circuit, display panel and driving method

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0038] An embodiment of the present invention provides a pixel driving circuit, figure 1 A schematic structural diagram of a pixel driving circuit provided by an embodiment of the present invention, as shown in figure 1 As shown, the pixel driving circuit provided by the embodiment of the present invention includes a driving transistor T, a data writing module 10 , a light emission control module 20 , a threshold compensation module 30 and a bias adjustment module 40 . Wherein, the control end of the driving tran...

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Abstract

The invention discloses a pixel driving circuit, a display panel and a driving method. The pixel driving circuit comprises a driving transistor, a data writing module, a light emitting control module,a threshold compensation module and a bias adjusting module. The control end of the driving transistor is connected with a first node, the first end of the driving transistor is connected with a third node, and the second end is connected with a second node; the light-emitting control module is connected with the driving transistor and the light-emitting element in series; the threshold compensation module is connected in series between the control end of the driving transistor and the second end of the driving transistor; the first end of the bias adjusting module is connected with the biassignal end, the second end of the bias adjusting module is connected with the second end of the driving transistor, and the control end of the bias adjusting module is connected with the first controlsignal end to adjust the potential difference between the gate potential and the drain potential of the driving transistor T; and influence on the internal characteristics of the driving transistor when the gate potential of the driving transistor T in the non-bias stage is greater than the drain potential of the driving transistor is balanced.

Description

technical field [0001] The present invention relates to the field of display panels, in particular to a pixel driving circuit, a display panel and a driving method. Background technique [0002] Organic light-emitting display devices have the advantages of self-luminescence, low driving voltage, high luminous efficiency, fast response speed, thinness, and high contrast, and are considered to be the most promising display devices for the next generation. [0003] A pixel in an organic light emitting display device includes a pixel driving circuit. The driving transistor in the pixel driving circuit can generate a driving current, and the light emitting element emits light in response to the driving current. However, due to the process, aging and other reasons, the threshold value of the transistor will drift, which will affect the generated driving current, and the hysteresis effect when switching between high and low gray scales will also cause afterimages and uneven bright...

Claims

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Application Information

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IPC IPC(8): G09G3/3233
CPCG09G3/3233G09G2320/0247G09G2320/0257G09G2320/0233G09G2300/0819G09G3/2003G09G2320/0242G09G2320/045G09G2310/0251G09G2310/021
Inventor 李杰良黄高军
Owner XIAMEN TIANMA MICRO ELECTRONICS
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