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

A technology of pixel circuit and driving module, which is applied in the field of manufacturing of display devices, display panels and display devices, pixel circuits and their driving methods, and can solve the problem of single-direction drift of threshold voltage, shortening the service life of display panels, and affecting the display uniformity of display panels And other issues

Inactive Publication Date: 2021-06-08
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present application provide a pixel circuit and its driving method, a display panel, and a display device. By using the first control terminal of the driving module to load the first signal in the first period, the first control terminal of the driving module is used in the second The period is used to load the second signal, the polarity of the first signal and the second signal are opposite, and the first period and the second period have no intersection; to solve the single direction drift of the threshold voltage of the existing driving module It is more serious, which affects the display uniformity of the display panel and reduces the life of the display panel

Method used

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

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Embodiment Construction

[0051]The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0052] The terms "first" and "second" in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or modules, but optionally also includes steps or modules that are not listed, or o...

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Abstract

The invention provides a pixel circuit and a driving method thereof, a display panel and a display device. The pixel circuit comprises a light-emitting module and a driving module, wherein the first end of the driving module is electrically connected with the light-emitting module, and is used for loading a first signal in a first time period, and loading a second signal in a second time period, the polarities of the first signal and the second signal are opposite, and the first time period and the second time period are not intersected. According to the scheme, drifting of the threshold voltage of the driving module can be slowed down, so that the service life of the display panel is prolonged.

Description

technical field [0001] The present application relates to the field of display technology, in particular to the manufacture of display devices, in particular to pixel circuits and their driving methods, display panels and display devices. Background technique [0002] The OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) display device has the advantages of light weight, thin thickness, bendability, and wide viewing angle range. [0003] At present, a thin film transistor is used in the pixel circuit of an OLED display to control the current passing through the OLED to control the light emission of the OLED. However, the gate of the thin film transistor is loaded with a positive signal by a unique and fixed signal source during operation, resulting in the The difference between the gate signal and the source signal remains a positive signal for a long time, so that the threshold voltage drift of the thin film transistor shows a single change, which further ac...

Claims

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Application Information

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IPC IPC(8): G09G3/3233
CPCG09G3/3233G09G2320/0233G09G2300/043G09G2300/0819G09G2310/0256G09G3/32G09G2300/0842G09G2310/08G09G2330/021
Inventor 刘国辉王振岭
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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