Organic light emitting diode display including capping layer having high refractive index

Patent metadata

Field	Value
Publication number	US-2016149157-A1
Application number	US-201514853165-A
Country	US
Kind code	A1
Filing date	Sep 14, 2015
Priority date	Nov 24, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

An organic light emitting diode display including a first substrate; a first electrode on the first substrate; an organic light emitting layer on the first electrode; a second electrode on the organic light emitting layer; and a capping layer on the second electrode, wherein the capping layer includes at least one heterocyclic compound, the heterocyclic compound including a carbazole group and a heterocyclic group bonded with the carbazole group.

First claim

What is claimed is:

1 . An organic light emitting diode display, comprising:
a first substrate; a first electrode on the first substrate; an organic light emitting layer on the first electrode; a second electrode on the organic light emitting layer; and a capping layer on the second electrode, wherein the capping layer includes at least one heterocyclic compound, the heterocyclic compound including a carbazole group and a heterocyclic group bonded with the carbazole group.

2 . The organic light emitting diode display as claimed in claim 1 , wherein the heterocyclic compound is represented by one of the following Chemical Formulae 1 to 5:

wherein, in Chemical Formulae 1 to 5,
A 1 to A 7 are each independently a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms or a substituted or unsubstituted aromatic heterocyclic group having 1 to 30 ring carbon atoms;
Y 1 to Y 16 are each independently C—R or a nitrogen atom, wherein each R of the C—R is independently one of a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 1 to 30 ring carbon atoms, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms and having a linear, branched, or cyclic structure, a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted haloalkoxy group having 1 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted dialkylarylsilyl group having 8 to 40 carbon atoms, a substituted or unsubstituted alkyldiarylsilyl group having 13 to 50 carbon atoms, a substituted or unsubstituted triarylsilyl group having 18 to 60 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms, a halogen atom, a cyano group, a hydroxyl group, a nitro group, or a carboxyl group;
R of adjacent C—R, when two of Y 1 to Y 16 that are adjacent to each other are C—R, are separate or are combined to form a cyclic structure;
L 1 to L 12 are each independently a single bond or a connecting group;
X 1 is carbon or silicon;
R 1 and R 2 are each independently a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 1 to 30 ring carbon atoms, or a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, R 1 and R 2 being separate or bonded together to form a cyclic structure; and
X 2 is boron, phosphorus, or P═O.

3 . The organic light emitting diode display as claimed in claim 2 , wherein the compound represented by Chemical Formula 1 is one of the following Compounds 1 to 48:

4 . The organic light emitting diode display as claimed in claim 2 , wherein the compound represented by Chemical Formula 2 is one of the following Compounds 49 to 73.

5 . The organic light emitting diode display as claimed in claim 2 , wherein the compound represented by Chemical Formula 3 is one of the following Compounds 74 to 78.

6 . The organic light emitting diode display as claimed in claim 2 , wherein the compound represented by Chemical Formula 4 is one of the following Compounds 79 to 84.

7 . The organic light emitting diode display as claimed in claim 2 , wherein the compound represented by Chemical Formula 5 is one of the following Compounds 85 to 88.

8 . The organic light emitting diode display as claimed in claim 1 , wherein the capping layer has a refractive index of about 1.9 or higher.

9 . The organic light emitting diode display as claimed in claim 1 , wherein the capping layer has a refractive index of about 1.9 to about 3.0.

10 . The organic light emitting diode display as claimed in claim 1 , wherein the capping layer has a thickness of about 10 nm to about 300 nm.

11 . The organic light emitting diode display as claimed in claim 1 , further comprising at least one of a hole injection layer and a hole transporting layer between the first electrode and the organic light emitting layer.

12 . The organic light emitting diode display as claimed in claim 1 , further comprising at least one of

Assignees

• Samsung Display Co Ltd

Inventors

• Cho Hwan-Hee
• Kim Myeong-Suk
• Kim Sung-Wook

Classifications

• H10K85/658

  Organoboranes · CPC title

• H10K59/879

  comprising refractive means, e.g. lenses · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K50/84

  Passivation; Containers; Encapsulations · CPC title

• H10K85/6572 Primary

  comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole · CPC title