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

A pixel drive circuit and drive current technology, applied in static indicators, instruments, etc., can solve the problems of large changes in drive current, poor display effect of display devices, affecting light output efficiency and chromaticity of light-emitting elements, etc., and achieves high stability , The effect of small changes in current density

Pending Publication Date: 2022-04-08
HUBEI YANGTZE IND INNOVAION CENT OF ADVANCED DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the driving current output by the existing pixel driving circuit varies greatly, which affects the light extraction efficiency and chromaticity of the light-emitting element, making the display effect of the display device poor.

Method used

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

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] As mentioned in the background art, with the continuous improvement of display technology, people's requirements for display devices are also continuously increasing. Among various display technologies, self-luminous display devices are self-luminous, light and thin, low power , high color gamut, flexible display and other advantages have been widely used in various electronic devices including computers, mobile phones and other electronic products. The...

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PUM

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Abstract

The invention provides a pixel driving circuit and a driving method thereof, a display panel and a display device.In the display process of one frame of picture and the stage that a light-emitting control unit controls driving current to be transmitted to a light-emitting element, the working state of the light-emitting control unit comprises a plurality of first working states and a plurality of second working states, and the first working states and the second working states operate alternately; wherein the driving current is transmitted to the light-emitting element in the first working state, and transmission of the driving current to the light-emitting element is stopped in the second working state, so that small current density change of the driving current can be ensured, and high stability of the driving current output by the pixel driving circuit is ensured; the light-emitting efficiency and the chromaticity stability of the light-emitting element are high, and the display effect of the display device is improved.

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically, to a pixel driving circuit and a driving method thereof, a display panel and a display device. Background technique [0002] With the continuous improvement of display technology, people's requirements for display devices are also constantly increasing. Among various display technologies, self-luminous display devices are self-luminous, light and thin, low power consumption, high contrast, high color gamut, The realization of advantages such as flexible display has been widely used in various electronic devices including electronic products such as computers and mobile phones. The self-luminous elements in the existing self-luminous display devices are generally organic light-emitting diodes (Organic Light Emitting Diode, OLED), quantum dot light-emitting diodes (Quantum Dot Light Emitting Diodes, QLED), micro light-emitting diodes (Micro Light Emitting Diodes, Mic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09G3/3225
Inventor 盛晨航
Owner HUBEI YANGTZE IND INNOVAION CENT OF ADVANCED DISPLAY CO LTD