Organic light emitting diode display

Patent metadata

Field	Value
Publication number	US-9997720-B2
Application number	US-201514755879-A
Country	US
Kind code	B2
Filing date	Jun 30, 2015
Priority date	Jan 7, 2015
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

An organic light emitting display element according to an example embodiment includes: a first electrode, an emission layer positioned on the first electrode, and a second electrode positioned on the emission layer, in which the emission layer includes at least one of the compounds represented by the following Chemical Formulas 1 to 3.

First claim

What is claimed is:

1. An organic light emitting diode display, comprising:
an organic light emitting diode, the organic light emitting diode including an emission layer that contains a compound represented by the following Chemical Formula A:

wherein, in Chemical Formula A,
rings a, b, and c are aromatic,
P and Q of ring b are N or CH, one of P and Q being N and the other of P and Q being CH,
R and S of ring d are NR′ or CH 2 , one of R and S being NR′ and the other of R and S being CH 2 ,
R′ is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted condensed polycyclic group having 6 to 30 carbon atoms, an amine group substituted by a substituted or unsubstituted heteroaryl group having 4 to 30 carbon atoms, or an amine group substituted by a substituted or unsubstituted condensed polycyclic group having 6 to 30 carbon atoms,
rings a and c are independently unsubstituted or substituted with one or more of a halogen atom, a cyano group, a hydroxy group, a nitro group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 4 to 30 carbon atoms, a substituted or unsubstituted condensed polycyclic group having 6 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, an amine group substituted by a substituted or unsubstituted aryl group having 6 to 30carbon atoms, an amine group substituted by a substituted or unsubstituted heteroaryl group having 4 to 30 carbon atoms, or an amine group substituted by a substituted or unsubstituted condensed polycyclic group having 6 to 30 carbon atoms.

2. The organic light emitting diode display as claimed in claim 1 , wherein the compound represented by the Chemical Formula A is represented by one of the following Chemical Formulas B-1, B-2, or B-5:

3. The organic light emitting diode display as claimed in claim 1 , wherein the compound represented by the Chemical Formula A is a dopant in the emission layer, the dopant being mixed in the emission layer with a host, the host including one or more of carbazole biphenyl, 1,3-di(9H-carbazol-9-yl)benzene, or 9,10-di(2-naphthyl)anthracene, the host and the dopant operating to emit blue light.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Myeong Suk
• Shin Dae Yup
• Kim Sung Wook
• Cho Hwan Hee

Classifications

• C09K11/025

  non-luminescent particle coatings or suspension media · CPC title

• C09K2211/1011

  Condensed systems · CPC title

• C09K11/06 Primary

  containing organic luminescent materials · CPC title

• H01L51/0072 Primary

  Electricity · mapped topic

• H01L51/5012

  Electricity · mapped topic