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Organic luminescent device and organic luminescence display apparatus

A technology for organic light-emitting devices and light-emitting displays, which is applied in the manufacture of electric solid-state devices, semiconductor devices, semiconductor/solid-state devices, etc. Improve thermal conductivity and prevent overheating

Active Publication Date: 2014-10-08
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of overheating of the organic light-emitting device and affecting its service life in the organic light-emitting device and organic light-emitting display device of the prior art due to poor thermal conductivity of the encapsulation adhesive layer

Method used

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  • Organic luminescent device and organic luminescence display apparatus
  • Organic luminescent device and organic luminescence display apparatus
  • Organic luminescent device and organic luminescence display apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a figure 2 The organic light-emitting device shown includes a substrate 1 and an organic light-emitting unit 2 disposed on the substrate 1;

[0031] Covering the passivation layer 3 of the organic light-emitting unit 2, the passivation layer 3 covers the organic light-emitting unit 2, and is used to block the influence of water and oxygen in the environment on the organic light-emitting unit 2;

[0032] An encapsulation adhesive layer 4 is provided on the side of the passivation layer 3 away from the organic light-emitting unit 2, and a cover plate 5 is provided on the side of the encapsulation adhesive layer 4 away from the organic light-emitting unit 2, and the cover plate 5 is used as a heat sink. The heat generated by the organic light-emitting unit 2 is exported through the encapsulation adhesive layer 4 ; the encapsulation adhesive layer 4 includes heat-conducting particles 7 .

[0033] Since the encapsulating adhesive layer 4 in this em...

Embodiment 2

[0047] This embodiment provides a method for preparing the above-mentioned organic light-emitting device, including the following steps:

[0048] 1) Making an organic light-emitting unit

[0049]The necessary functional layers for light emission, such as the anode (indium tin oxide), the organic light-emitting layer, and the cathode, are fabricated on the substrate (glass substrate) by a known method. No more details here.

[0050] 2) Fabrication of passivation layer

[0051] In step 1, the organic light-emitting unit is covered with a passivation layer; the passivation layer can be made of Si 3 N 4 , SiO 2 , SiC, TiO 2 、Al 2 o 3 , ZnS, and ZnO; the passivation layer has the function of blocking water and oxygen; preferably, the thickness of the passivation layer is 500-1000nm. According to different materials, different known methods can be used to obtain the passivation layer, for example, chemical vapor deposition, sputtering, atomic force deposition, spraying, etc....

Embodiment 3-7

[0061] Embodiments 3-7 provide an organic light-emitting device prepared by the method described in embodiment 2, wherein the parameters of the main functional layers of the organic light-emitting device are shown in Table 1. It can be seen from Table 1 that the service life of the organic light-emitting device containing heat-conducting particles and desiccant particles in the encapsulating adhesive layer is extended to varying degrees compared with the organic light-emitting device not containing heat-conducting particles and desiccant particles in the encapsulating adhesive layer.

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Abstract

The invention belongs to the field of a display technology, and provides an organic luminescent device and an organic luminescence display apparatus, for solving the problems of overheated organic luminescence device and affected service life which are caused by poor heat conduction performance of packaging glue layers in a conventional organic luminescent device and a conventional organic luminescence display apparatus. The packaging glue layers in the organic luminescent device and the organic luminescence display apparatus are provided with heat conduction particles and drying agent particle. The heat conduction particles can improve the heat conduction capabilities of the packaging glue layers so as to prevent the service life from being affected and the device from being damaged due to overheating of an organic luminescence unit after long-time energization; and the drying agent particles, when the moisture and oxygen obstructing performance of the packaging glue layer is decreased, absorb moisture to prevent the moisture from being diffused to the organic luminescence unit so as to prevent the service life from being affected.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to an organic light-emitting device and an organic light-emitting display device. Background technique [0002] Organic Light Emitting Diode (OLED, Organic Light Emitting Diode) is the most ideal third-generation display technology after liquid crystal display technology. Since 1987, it has gradually developed and matured after more than 20 years, and has been widely used in various fields such as flat panel display, lighting, and display backlight, and has also created a huge growing market. [0003] The organic material of the OLED device is very sensitive to the external environment. The water and oxygen in the atmospheric environment will oxidize or corrode the materials of the OLED device, so that the performance of the OLED device will deteriorate sharply after the unpackaged OLED device is placed in the atmospheric environment. degraded, or even completely lost ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/56H01L27/32
CPCH10K59/874H10K59/8722
Inventor 罗程远王俊然于东慧
Owner BOE TECH GRP CO LTD
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