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Display panel and display device

A display panel, ultraviolet light technology, applied in the direction of electric solid state devices, semiconductor devices, electrical components, etc., can solve problems such as damage and reduce the service life of the device, and achieve the effect of avoiding damage, shortening the service life, and improving performance.

Active Publication Date: 2020-07-17
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In organic light-emitting display panels, due to the irradiation of external ultraviolet light and ultraviolet light generated inside the organic light-emitting device, the organic materials in the organic light-emitting device are easily destroyed, thereby reducing the service life of the device

Method used

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  • Display panel and display device

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preparation example Construction

[0036] A method for preparing a light-emitting device provided by an embodiment of the present invention includes the following steps:

[0037] S21: forming an anode 101 on the substrate, forming a hole injection layer 111 on the anode 101, and then evaporating a hole transport layer 113 on the hole injection layer;

[0038] S22: Evaporating the light emitting layer 103 on the hole transport layer 113;

[0039] S23: Evaporating the electron transport layer 112 on the light emitting layer 103, and evaporating the cathode 102 on the electron transport layer 112;

[0040] S24: vapor-depositing the first capping layer 104 on the cathode 102, vapor-depositing the ultraviolet absorber layer 105 on the first capping layer 104, and vapor-depositing the second capping layer 104' on the ultraviolet absorber layer 105, to obtain an organic light-emitting device .

[0041] In the display panel of the present invention, the ultraviolet absorber in the capping layer of the organic light e...

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Abstract

The invention discloses a display panel and a display device. The display panel comprises an organic light-emitting device, and the organic light-emitting device comprises an anode and a cathode whichare arranged opposite to each other, a light-emitting layer located between the anode and the cathode and a cap layer located at the side, away from the light-emitting layer, of a light-emitting sideelectrode, wherein the cap layer comprises an ultraviolet light absorber, the ultraviolet light absorber is used for absorbing the ultraviolet light, and the volume of the ultraviolet light absorberafter absorbing the ultraviolet light is reduced relative to the volume of molecules before absorbing the ultraviolet light. According to the present invention, the ultraviolet absorbent is added intothe cap layer, so that the organic materials in the organic light-emitting device can be prevented from being damaged, and the service life of the organic light-emitting device is prolonged. In addition, the molecular volume of the ultraviolet absorbent added in the organic light-emitting device is reduced after the ultraviolet absorbent absorbs the ultraviolet light, so that the refractive indexof the cap layer is increased, the light extraction efficiency of the organic light-emitting device is improved, the light-emitting efficiency of the device is finally improved, and the service lifeof the device is prolonged.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display panel and a display device including the display panel. Background technique [0002] With the continuous development of display technology, consumers' requirements for display panels continue to increase, and various display panels emerge in endlessly, and have been developed rapidly, such as liquid crystal display panels, organic light-emitting displays and other display panels. On this basis, 3D Display, touch display technology, curved display, ultra-high resolution display, and anti-peep display display technologies are emerging to meet the needs of consumers. [0003] Organic light-emitting display panels are widely favored by consumers because of their advantages such as light and thin, easy to bend, high contrast, and low power consumption. Its market share in the display field is increasing year by year, and it is currently a research hotspot in the di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/54
CPCH10K85/654H10K85/655H10K85/657H10K85/6572H10K59/8052H10K59/8792H10K59/8051H10K59/873H10K59/879H10K50/865H10K50/81H10K50/82H10K85/141
Inventor 代文朋高威张磊牛晶华黄高军
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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