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OLED display panel, OLED display screen and preparation method

A display panel and display technology, applied in the field of OLED display panels, can solve the problem of uneven display of OLED display panels, and achieve the effect of improving the problem of uneven display and avoiding the voltage drop in the center and edge of the cathode layer.

Pending Publication Date: 2022-07-29
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 an OLED display panel, an OLED display and a preparation method that can better improve the voltage drop problem in the panel and improve the display unevenness of the OLED display panel

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  • OLED display panel, OLED display screen and preparation method
  • OLED display panel, OLED display screen and preparation method
  • OLED display panel, OLED display screen and preparation method

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that, in addition, the terms "first" and "second" are only used for the purpose of description, and should not be interpreted as indicating or implying relative importance or implicitly indicating the indicated technical features. quantity. Thus, features delimited with "first," "second" may expressly or implicitly include one or more of said features. In the descr...

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Abstract

The invention provides an OLED display panel, an OLED display screen and a preparation method, relates to the technical field of display, and solves the problem of poor contact caused by film layer residues when an electroluminescent layer is removed in a laser drilling mode. An anode layer, an auxiliary electrode layer, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer and an electron injection layer are sequentially formed on the substrate; all the film layers above the area where the auxiliary electrode layer is located are removed, and through holes are formed; conducting particles are led into the through holes, and micro conducting layers are formed at the bottoms of the through holes; and forming a cathode layer on the electron injection layer and in a space formed by the through hole and the micro conductive layer, wherein the cathode layer is electrically connected with the auxiliary electrode layer through the micro conductive layer. The micro conductive layer is formed at the bottom of the through hole, the cathode layer and the auxiliary electrode layer are in good contact and are conducted, the problem that the voltage drop of the display panel is still large is solved, and the display unevenness of the OLED display panel is improved.

Description

technical field [0001] The present application relates to the field of display technology, in particular to an OLED display panel, an OLED display screen and a preparation method. Background technique [0002] As one of the pillar industries of the electronic information industry, the flat panel display industry is crucial to the technological and economic development of a country and region by virtue of its huge economic effect and industrial agglomeration effect. Although the thin film transistor liquid crystal display (TFT-LCD) liquid crystal display technology occupies the mainstream of today's display, the organic light emitting diode (Active-matrix organic light-emitting diode, AMOLED) technology is currently the most likely to replace TFT -LCD technology becomes the next generation of new display technology. [0003] In the manufacture of large-scale OLED panels, the current mainstream method is to use vacuum evaporation or IJP (Ink JetPrinting, inkjet printing) tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/56H01L51/52
CPCH10K50/824H10K50/82H10K71/00
Inventor 匡友元
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD