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A pixel drive circuit and a drive method thereof, a display panel and a display device

A pixel drive circuit and mirror drive technology, applied in circuits, electrical components, static indicators, etc., can solve the problems of lowering the display quality of the display panel, affecting the pixel display effect, and long charging time, so as to improve work performance and improve charging speed, the effect of reducing the influence of the drive current

Inactive Publication Date: 2018-09-14
SHANGHAI TIANMA AM OLED
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, in the current programming type pixel circuit, there is a problem that the charging time is too long, and there is a leakage current phenomenon on the wiring that transmits the current signal, resulting in a large difference between the current written into the pixel circuit and the programming current, which affects the pixel. The display effect reduces the display quality of the display panel

Method used

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  • A pixel drive circuit and a drive method thereof, a display panel and a display device
  • A pixel drive circuit and a drive method thereof, a display panel and a display device
  • A pixel drive circuit and a drive method thereof, a display panel and a display device

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Embodiment Construction

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0025] The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present invention and its application or use.

[0026] The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the specification.

[0027] In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of th...

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Abstract

The invention provides a pixel drive circuit and a drive method thereof, a display panel and a display device and belongs to the technical field of display. The pixel drive circuit comprises a data write-in module, a mirror drive module and a light-emitting element. The mirror drive module comprises a first transistor and a second transistor; the gate of the first transistor and the gate of the second transistor are electrically connected to a first node; a first electrode of the first transistor and a first electrode of the second transistor are electrically connected; the threshold voltage of the first transistor equals the threshold voltage of the second transistor; the width-length ratio of the first transistor is A and the width-length ratio of the second transistor is B, wherein A<B<=20A; the light-emitting element is used for emitting light in response to a drive current. Compared with the prior art, the charging speed of data signals can be increased, the working efficiency ofthe pixel drive circuit is increased, the influence of a leak current on a drive current can be greatly reduced and the working performance of the pixel drive circuit 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] The display panel provided in the prior art includes a plurality of pixels, the pixels include a pixel driving circuit, and the pixel driving circuit is used to control the pixel to emit light. [0003] Pixel circuits are classified into current programming type pixel circuits and voltage programming type pixel circuits according to their working principles. Among them, in the current programming type pixel circuit, there is a problem of too long charging time, and there is a phenomenon of leakage current on the wire transmitting the current signal, resulting in a large difference between the current written into the pixel circuit and the programming current, which affects the pixel performance. The display effect reduces the display quality of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G3/3241G09G2300/0819G09G2300/0842G09G2300/0861G09G2320/045H10K59/1213G09G2320/0214
Inventor 向东旭朱仁远李玥高娅娜蔡中兰
Owner SHANGHAI TIANMA AM OLED
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