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Organic EL light-emitting element and method for manufacturing same

A technology for light-emitting elements and manufacturing methods, which is applied in the manufacture of semiconductor/solid-state devices, light-emitting materials, electrical components, etc., can solve the problems of difficult thin films and easy crystallization of low-molecular compounds, and achieve the effect of low cost

Inactive Publication Date: 2020-07-03
SAKAI DISPLAY PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since low-molecular-weight compounds are prone to crystallization, it is difficult to form high-quality thin films by coating methods

Method used

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  • Organic EL light-emitting element and method for manufacturing same
  • Organic EL light-emitting element and method for manufacturing same
  • Organic EL light-emitting element and method for manufacturing same

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Embodiment Construction

[0023] Embodiments of the present invention will be described in detail below. In addition, the following embodiments are examples for explaining the present invention, and the present invention is not limited to the following embodiments.

[0024] Such as Figure 1C As shown in the schematic cross-sectional view of , the organic EL light-emitting element of this embodiment includes: a substrate 21, a first electrode (for example, an anode) 22 provided on the substrate 21 , and an electrode formed to surround at least a part of the first electrode 22. The insulating bank 23 , the organic layer 26 provided on the first electrode 22 surrounded by the insulating bank 23 , the second electrode 27 formed on the organic layer 26 , and the protective film 28 formed on the second electrode. Furthermore, the organic layer 26 is formed of a coating-type organic layer containing an oligomer of an organic material having a molecular weight of 300 to 5000.

[0025] Here, the "coating-typ...

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Abstract

Provided is an organic EL light-emitting element including an organic layer coating film 25 which is formed into a super-fine pixel pattern by using an organic material that is an oligomer having a molecular weight of 300-5,000. Also provided is a method for manufacturing the organic EL light-emitting element. The coating film 25 is formed by dropping liquid microdroplets of approximately 0.05-1 pL.

Description

technical field [0001] The invention relates to an organic EL light-emitting element (organic electroluminescent element) and a manufacturing method thereof. Background technique [0002] An organic EL light-emitting element is formed by sandwiching a thin film of an organic material including an organic light-emitting substance between an anode and a cathode. The organic thin film is formed by vapor deposition or coating. In the vapor deposition type manufacturing method, a support substrate (substrate to be vapor deposited) and a vapor deposition mask are arranged to overlap each other, and an organic material is vapor-deposited in a vacuum through the opening of the vapor deposition mask, thereby forming a thin film on the support substrate. . Generally, a low-molecular compound is used as an evaporation-type organic material. On the other hand, in the method of manufacturing a coating-type organic EL light-emitting element, a thin film is formed on a support substrate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H05B33/10H10K99/00
CPCC08G61/00C09K11/06H05B33/10H05B33/12H05B33/22H10K71/135H10K85/111H10K85/633H10K85/623H10K85/656
Inventor 西冈幸也岸本克彦
Owner SAKAI DISPLAY PROD