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Pixel driving circuit

A pixel drive circuit and level technology, applied in instruments, static indicators, etc., can solve problems such as poor compensation effect, time compression for performing compensation, and current instability

Inactive Publication Date: 2020-08-25
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the organic light-emitting diode display panel performs light-emitting display, the current of the organic light-emitting diode is a relational expression that has nothing to do with the threshold voltage, which solves the problem of current instability caused by the threshold voltage, but the high-frequency drive display will be compressed to each scan line When performing scanning, the time for performing compensation will also be compressed, causing the problem that the compensation effect is not good

Method used

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Embodiment Construction

[0033] In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, and the word "embodiment" used in the description of the present invention is meant to be used as an example, illustration or illustration, and is not intended to limit the present invention.

[0034] Please refer to image 3 , image 3 It is a schematic diagram of a pixel driving circuit according to an embodiment of the present invention. The pixel driving circuit of the present invention includes seven switches (namely T1 to T7) and two storage capacitors (namely C1 and C2), wherein each switch includes a first end, a second end, and a third end . In this embodiment, the seven switches are exemplarily P-type thin film transistors, so e...

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Abstract

The invention provides a pixel driving circuit. The pixel driving circuit comprises seven switches, two storage capacitors, an organic light emitting diode and a plurality of signal sources. The timing sequence of the signal sources can be sequentially divided into a reset stage, a compensation stage, a write-in stage and a light-emitting stage, the compensation stage and the write-in stage of thethreshold voltage are separated, the compensation stage is not affected by compression compensation time due to high-frequency driving display, and then the compensation effect is kept.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit. Background technique [0002] With the development of the display panel, the display panel with high-frequency driving display has gradually become a development trend of the display panel because it can bring a smoother user experience. However, for the current mainstream liquid crystal display panels and organic light-emitting diode display panels, the difficulties of high-frequency drive display are different, and the high-frequency drive display of organic light-emitting diode display panels is more difficult, and the current organic light-emitting diode In order to ensure the display quality of the display panel, a compensation circuit is usually used to solve the problem of unstable current between pixels caused by the threshold voltage. [0003] refer to figure 1 and figure 2 , which are respectively a schematic diagram and a timing di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3233
CPCG09G3/3233
Inventor 郑园
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD