US 2021/0175475 A1 · ORGANIC LIGHT-EMITTING ELEMENT

Abstract

The present invention provides an organic light-emitting element, comprising a substrate, a first electrode, more than one organic layer film comprising a light-emitting layer, and a second electrode. The light-emitting element further comprises a cover layer. The cover layer is located on the second electrode, and comprises a high refractive layer and a low refractive layer. A material for the low refractive layer of the cover layer is a boron complex organic small molecular compound. The organic light-emitting element provided by the present invention can achieve high light-emitting efficiency and color reproducibility. The organic light-emitting element of the present invention can be used for an organic EL display, a backlight source of a liquid crystal display, illumination, a sign board, an identification lamp, etc.

Claims15

Dependent claims

An organic light-emitting element, comprising a substrate, a first electrode, more than one organic layer film comprising a light-emitting layer, and a second electrode, wherein the light-emitting element further comprises a cover layer;

the cover layer comprises a low refractive layer;
and the low refractive layer is formed from an organic small molecular compound.

Dependencies are inferred from the claim text.

Facts

Application

16/761,553Filed 15 Nov 2018

Priority

CN 201711179577.323 Nov 2017

Published

10 Jun 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

H10K 85/658
Organic compounds having low molecular weight: organoboranes
C07F 5/04
Boron compounds: esters of boric acids
H10K 59/879
Arrangements for extracting light from the devices: comprising refractive means, e.g. lenses
H10K 85/322
Metal complexes comprising a group IIIA element, e.g. Tris gallium [Gaq3]: comprising boron

Organic light-emitting element

Life of this patent

Organic light-emitting element

Life of this patent

Abstract

Claims15