Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-9755161-B2
Application number	US-201514919944-A
Country	US
Kind code	B2
Filing date	Oct 22, 2015
Priority date	Dec 5, 2014
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

An organic light emitting display device is disclosed. The organic light emitting display device comprises an anode, an organic layer over the anode, and a cathode over the organic layer. The organic layer may include a heterocyclic compound. Alternatively, the organic layer may include a spirobisfluorene compound with hole transfer properties and a material with electron transfer properties.

First claim

What is claimed is:

1. A heterocyclic compound represented by the following Chemical Formula 1:

where R 1 to R 5 are independently one among hydrogen, deuterium, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl amino group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl amino group having 2 to 30 carbon atoms, l and o are an integer between 0 and 3, and m, n, and p are an integer between 0 and 4,
wherein, if any of l, m, n, o, and p has a value of 2 or more, the corresponding R is the same with each other or
if any of l, m, n, o, and p has a value of 2 or more, the corresponding R is different from each other, and
Ar is a substituted or unsubstituted aryl group having to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms.

2. The heterocyclic compound of claim 1 , wherein the heterocyclic compound includes one among the following compounds:

3. An organic light emitting display device, comprising:
an anode;
an organic layer on the anode; and
a cathode on the organic layer,
wherein the organic layer includes the heterocyclic compound according to any one of claims 1 and 2 .

4. The organic light emitting display device of claim 3 , wherein the organic layer includes a light emitting layer.

5. The organic light emitting display device of claim 4 , wherein a host for the light emitting layer includes the heterocyclic compound.

6. The organic light emitting display device of claim 4 , wherein the heterocyclic compound includes a compound having hole transfer properties and a material having electron transfer properties.

7. The organic light emitting display device of claim 3 , wherein the light emitting layer includes a host and a dopant, and the triplet energy of the organic layer in the host is equal to or greater than 2.5 eV.

8. The organic light emitting display device of claim 3 , wherein the organic layer includes at least one among a hole transport layer, an electron blocking layer, a hole blocking layer, and an electron transport layer, and the at least one among the hole transport layer, the electron blocking layer, the hole blocking layer, and the electron transport layer includes the heterocyclic compound.

9. The organic light emitting display device of claim 3 , wherein an organic light emitting display device having the heterocyclic compound has a higher triplet energy, reduced operating voltage, and increased lifetime, as compared with an organic light emitting display device without the heterocyclic compound.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Dohan
• Kim Jungkeun
• Kim Hyoseok
• Yun Min
• Yoon Seunghee

Classifications

• C07D403/04

  directly linked by a ring-member-to-ring-member bond · CPC title

• C07D223/32 Primary

  containing carbocyclic rings other than six-membered · CPC title

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title

• C09K2211/1092

  containing sulfur as the only heteroatom · CPC title

• H01L51/5016

  Electricity · mapped topic