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Cathode, organic light emitting diode and preparation method thereof

A light-emitting diode and cathode technology, which is applied in semiconductor/solid-state device manufacturing, electrical components, electric solid-state devices, etc., can solve problems such as poor conductivity, poor cathode light output, and easy residual creases on metal cathodes, and achieve water and oxygen resistance High corrosion resistance, good foldability, high light transmittance effect

Active Publication Date: 2022-03-18
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some embodiments of the present application can solve the problem of poor light output from the cathode caused by oxidation of the metal cathode of the existing top-emission display screen
Other embodiments of the present application can solve the problem of poor electrical conductivity of the existing top-emission metal cathode due to its thinness
Some other embodiments of the present application can solve the problem that the metal cathode of the flexible display is prone to creases due to repeated folding

Method used

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  • Cathode, organic light emitting diode and preparation method thereof

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Embodiment Construction

[0032] The technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings (if any) in the embodiment of the application. Obviously, the described embodiment is only a part of the embodiment of the application, not all Example. 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. In addition, it should be understood that the specific implementations described here are only used to illustrate and explain the present application, and are not intended to limit the present application. In this application, unless stated to the contrary, the used orientation words (if any) such as "up" and "down" usually refer to the up and down in the actual use or working state of the device, specifically in the drawings The direction of the drawing; and "inside" and "outside...

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Abstract

The embodiment of the invention discloses a cathode, an organic light-emitting diode and a preparation method of the organic light-emitting diode. And the cathode is a graphene cathode. The graphene has relatively high light transmittance, relatively good foldability, water and oxygen corrosion resistance and relatively high conductivity, and after the graphene is used as a laminated graphene cathode, the graphene can be used as a lithium ion battery cathode; the light emitting effect, the bending resistance and the electrical conductivity of the organic light emitting diode in each embodiment of the invention are superior to those of an organic light emitting diode which only adopts a pure metal cathode or a metal alloy cathode in the prior art, so that the cathode in each embodiment of the invention is particularly suitable for an organic top light emitting diode.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a cathode, an organic light emitting diode and a preparation method thereof. Background technique [0002] Cathodes of OLED display devices (Organic light emitting diodes) are currently mostly made of metal materials, such as Ag, Al or Mg / Ag alloys. The light transmittance of these metal materials is poor, and after a period of use, the light transmittance is further reduced due to oxidation, so it is difficult to meet the requirements of light emission from the cathode, which affects the made top. The display effect of the light-emitting (Topemission) device. In addition, the metal material itself is easily oxidized to form metal oxides, which leads to poor stability of the metal electrodes, thereby affecting the display effect thereof. Furthermore, the cathode of the top-emitting device is usually thinner in order to ensure the light transmittance, which leads to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/56
CPCH10K50/828H10K50/8426H10K71/00Y02E10/549
Inventor 李鑫
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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