Pixel circuit and display panel

A pixel circuit and capacitor technology, applied in the field of pixel drive and display, can solve the problems of small data signal voltage range, poor charging effect, low grayscale accuracy, etc., to increase the voltage range, improve the writing effect, and improve the grayscale. The effect of precision

Active Publication Date: 2021-11-23
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

[0004] The present application provides a pixel circuit and a display panel, which solves the problem of poor charging effect when data signals are written into the pixel circuit, and the problem of low grayscale accuracy of the display due to the small voltage range of the data signal

Method used

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Embodiment Construction

[0023] 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.

[0024] Such as figure 1 or Figure 4 As shown, this embodiment provides a pixel circuit, which includes a driving transistor T1, a writing transistor T3, a first capacitor C1, and a second capacitor C2; the driving transistor T1 is connected in series to the first power supply signal VDD and the second power supply signal The light-emitting circuit formed by VSS is used to control the current flowing through the light-emitting circuit; one of the source / drain of the writing tra...

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Abstract

The present application discloses a pixel circuit and a display panel, which include a driving transistor, a writing transistor, a first capacitor, and a second capacitor; wherein, the ratio of the capacitance value of the second capacitor to the capacitance value of the first capacitor is not less than 50% And not more than 150%; by configuring the proportional relationship between the capacitance value of the second capacitor and the capacitance value of the first capacitor, it not only helps to improve the writing effect of the data signal; but also increases the voltage range of the data signal, which can improve gray order precision.

Description

technical field [0001] The present application relates to the field of display technology, in particular to the field of pixel driving technology, and in particular to a pixel circuit and a display panel. Background technique [0002] The current display industry is developing rapidly, and display applications have been integrated into all aspects of people's lives, but product homogeneity is becoming increasingly serious. Consumers are increasingly demanding high-quality displays. High-frequency display has always been sought after by consumers in the high-end display field. In the early days, it mainly focused on professional and game applications. Now the demand for high frequency on mobile phones is also increasing, and high frequency display can bring a smoother user experience. [0003] Among them, the current-driven pixel display represented by tiny LED has higher difficulty in high-frequency driving. In order to ensure the display quality of the current self-illu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 郑园
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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