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Driving method of pixel driving circuit, display panel and display device

A technology of pixel driving circuit and driving method, which is applied in static indicators, instruments, etc., can solve the problems of driving transistor threshold voltage offset, hysteresis, and inability to quickly reach the brightness of a white screen, so as to avoid hysteresis and image sticking Effect

Active Publication Date: 2021-11-26
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

[0003] In the prior art, after the pixel circuit emits light for a period of time, the threshold voltage of the driving transistor shifts, and a hysteresis effect occurs, so that when the black screen is switched to the white screen, The brightness of the white screen cannot be quickly reached in the first frame and the second frame, and afterimages appear

Method used

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  • Driving method of pixel driving circuit, display panel and display device
  • Driving method of pixel driving circuit, display panel and display device
  • Driving method of pixel driving circuit, display panel and display device

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Embodiment Construction

[0041] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0042] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0043] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0044] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a driving method of a pixel driving circuit, a display panel and a display device, and relates to the field of display, the pixel driving circuit comprises a driving transistor, a first reset module, a first light emitting control module, a storage capacitor and a compensation module; the gate of the driving transistor is electrically connected with the first node, the first end of the driving transistor is electrically connected with the second node, and the second end of the driving transistor is electrically connected with the third node; the driving method comprises a resetting stage, high and low potential alternate resetting is carried out on the first node for multiple times in the resetting stage, and the last resetting is effective level resetting of the driving transistor. According to the invention, the first node is subjected to repeated high-low potential alternate resetting, so that the hysteresis problem of the driving transistor is avoided, and when a black picture is switched to a white picture, the brightness can quickly reach the brightness of white, and the ghost shadow phenomenon is avoided.

Description

technical field [0001] The present invention relates to the field of display technology, and more particularly, to a driving method of a pixel driving circuit, a display panel and a display device. Background technique [0002] With the continuous development of display technology, the development process of display panels is gradually accelerated. Organic Light-Emitting Diode (OLED) display panels, as a current-type light-emitting device, have been increasingly used in high-performance displays. OLED displays feature self-illumination, no backlight, wide color gamut, and high contrast High, thin, wide viewing angle, fast response, can be used for flexible panels, wide operating temperature range, simple structure and manufacturing process and other excellent characteristics, OLED displays have also been increasingly used in mobile phone displays. [0003] In the prior art, after the pixel circuit emits light for a period of time, the threshold voltage of the drive transist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G2320/0257
Inventor 张蒙蒙李玥
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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