Display panel and display device

A display panel and substrate substrate technology, applied to static indicators, instruments, etc., can solve problems such as unstable gate voltage of drive transistors, and achieve the effect of improving display uniformity and maintaining stable voltage

Active Publication Date: 2020-04-10
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a display panel and a display device, which are used to improve the problem of unstable gate voltage of the driving transistor caused by leakage current

Method used

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. And in the case of no conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present invention be...

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Abstract

The invention discloses a display panel and a display device. A threshold compensation circuit comprises a first threshold compensation transistor, a second threshold compensation transistor and a shielding capacitor. Wherein a first threshold compensation transistor and a second threshold compensation transistor are arranged; the length L of the channel region of the transistor can be increased equivalently, and the current I of the transistor is inversely proportional to the length L of the channel region, so that when the length L of the channel region is increased, the current I of the transistor can be reduced, and the quantity of charges flowing into the node N1 from the node N4 can be reduced. Moreover, by arranging the shielding capacitor, the charge of the node N4 can be stored inthe shielding capacitor by utilizing the charge storage effect of the shielding capacitor. Therefore, during signal switching on the scanning signal line, charges of the node N4 can be prevented frombeing injected into the node N1, so that the voltage of the grid electrode of the driving transistor can be kept stable, and the display uniformity of the display panel is improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display panel and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) display is one of the hotspots in the field of flat panel display research today. Compared with Liquid Crystal Display (LCD), OLED display has low energy consumption, low production cost, self-illumination, wide Viewing angle and fast response speed etc. advantages. Among them, the pixel circuit used to control the light emission of the light-emitting device is the core technical content of the OLED display, which has important research significance. However, since the voltage of the gate of the driving transistor is not stable, the light emission is not stable, which causes the problem of uneven brightness. Contents of the invention [0003] Embodiments of the present invention provide a display panel and a display device for improving the instability of the gate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208G09G3/3266
CPCG09G3/3208G09G3/3266
Inventor 李敏芦兴王永志彭涛
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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