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Pixel circuit, driving method thereof and display panel

A technology of pixel circuits and driving transistors, applied in static indicators, instruments, etc., can solve problems such as driving current drop

Active Publication Date: 2020-10-20
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a pixel circuit, its driving method, and a display panel, so as to improve the problem of image sticking on the display panel, improve the problem of driving current drop with the increase of use time, and improve the display effect

Method used

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

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Embodiment Construction

[0027] 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.

[0028] As mentioned in the background art, existing display panels have the problems of image sticking and driving current drop as the usage time increases. The inventors found that the reason for the above problems is that the existing display panels usually include pixel circuits, and the driving transistors in the pixel circuits work under forward bias or negative bias for a long time, which makes the device characteristics of the driving transistors shift. . For example, when the driving transistor in the pix...

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Abstract

The invention discloses a pixel circuit, a driving method thereof and a display panel. The pixel circuit comprises a driving transistor, a first light-emitting control module, a light-emitting moduleand a black frame insertion control module, the first light-emitting control module is used for being turned off in part of time periods of a light-emitting stage under the control of a light-emittingcontrol signal, and the driving transistor is used for driving the light-emitting module to emit light when the first light-emitting control module is turned on. The black frame insertion control module is used for writing a preset voltage into the first electrode of the driving transistor under the control of a first scanning signal and the light-emitting control signal in the black frame insertion stage that both the first light-emitting control module and the data writing module are turned off, wherein in at least part of the time period of the black frame insertion stage, the voltage difference value between the gate voltage of the driving transistor and the preset voltage and the voltage difference value between the gate voltage of the driving transistor and the first electrode voltage being positive and negative when the driving transistor is turned on. According to the technical scheme, the problems of ghost shadows and driving current reduction can be solved.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a pixel circuit, a driving method thereof, and a display panel. Background technique [0002] With the development of display technology, people have higher and higher requirements for display effects. [0003] Existing display panels usually include a plurality of pixel circuits, and the pixel circuits usually include a driving transistor and a light emitting device, and the driving transistor generates a driving current to control the luminance of the light emitting device. [0004] However, the existing display panels have the problems of image sticking and driving current drop as the usage time increases. Contents of the invention [0005] The present invention provides a pixel circuit, a driving method thereof, and a display panel, so as to improve the problem of afterimages on display of the display panel, and improve the problem of decrease o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/30
CPCG09G3/30G09G2320/0257
Inventor 齐栋宇朱杰卢慧玲胡思明
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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