Organic light emitting diode

Patent metadata

Field	Value
Publication number	US-9595679-B2
Application number	US-201414760442-A
Country	US
Kind code	B2
Filing date	Oct 21, 2014
Priority date	Sep 12, 2014
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

The present specification relates to an organic light emitting diode.

First claim

The invention claimed is:

1. An organic light emitting diode comprising:
an anode;
a cathode;
a light emitting layer provided between the anode and the cathode;
an organic material layer including a compound represented by the following Chemical Formula 1 and provided between the cathode and the light emitting layer; and
an organic material layer including a compound represented by the following Chemical Formula 2 and provided between the anode and the light emitting layer,

wherein in Chemical Formula 1,
X1 to X3 are the same as or different from each other, and are each independently N or CH,
at least one of X1 to X3 is N,
Cy1 and Cy2 are the same as or different from each other, and are each independently a benzene cycle; or a naphthalene cycle,
at least one of Cy1 and Cy2 is benzene cycle,
L1 is a phenylene group; a biphenylene group; or a terphenylene group,
m is 1,
Ar1 and Ar2 are the same as or different from each other, and are each independently a phenyl group; a phenyl group substituted by an alkyl group; a biphenyl group; or a naphthyl group, and

in Chemical Formula 2,
Ar3 and Ar4 are the same as or different from each other, and are a phenyl group; or a biphenyl group,
L2 is a phenylene group; or a biphenylene group,
n is an integer of 0 or 1,
R1 to R7 are each independently hydrogen, and
Y1 and Y2 are the same as or different from each other, and are each independently alkyl group,
wherein the organic material layer including the compound represented by Chemical Formula 1 is an electron transport layer, an electron injection layer, or a layer simultaneously transporting and injecting electrons, and
wherein the organic material layer including the compound represented by Chemical Formula 2 is a hole transport layer.

2. The organic light emitting diode of claim 1 , further comprising:
one or two or more layers selected from the group consisting of an electron injection layer and an electron transport layer between the light emitting layer and the cathode.

3. The organic light emitting diode of claim 1 , further comprising:
one or two or more layers selected from the group consisting of a hole transport layer, a hole injection layer, and an electron blocking layer between the light emitting layer and the anode.

4. The organic light emitting diode of claim 1 , wherein the compound represented by Chemical Formula 1 is a compound represented by any one of the following Chemical Formulas 1-1 to 1-4:

in Chemical Formulas 1-1 to 1-4,
X1 to X3, L1, m, Ar1, and Ar2 are the same as those defined in Chemical Formula 1,
Z1 is deuterium,
p′ is 0, and
p is 0.

5. The organic light emitting diode of claim 1 , wherein X1 to X3 are N.

6. The organic light emitting diode of claim 1 , wherein the compound represented by Chemical Formula 1 is represented by any one of the following compounds:

7. The organic light emitting diode of claim 1 , wherein hole mobility of the compound represented by Chemical Formula 2 is 5×10 −6 cm 2 /Vs or more.

8. The organic light emitting diode of claim 1 , wherein Ar3 and Ar4 are the same as or different from each other, and are each independently a substituted or unsubstituted phenyl group; a substituted or unsubstituted biphenyl group; or a substituted or unsubstituted fluorenyl group.

9. The organic light emitting diode of claim 1 , wherein L2 is a substituted or unsubstituted phenylene group; a substituted or unsubstituted biphenylene group; or a substituted or unsubstituted naphthalene group, or n is 0.

10. The organic light emitting diode of claim 1 , wherein Y1 and Y2 are the same as or different from each other, and are each independently a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms; or a substituted or unsubstituted phenyl group, or are bonded to each other to form a substituted or unsubstituted fluorene structure.

11. The organic light emitting diode of claim 1 , wherein the compound represented by Chemical Formula 2 is represented by any one of the following compounds:

Assignees

• Lg Chemical Ltd

Inventors

• Huh Jungoh
• Lee Dong Hoon

Classifications

• H10K85/636

  comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom · CPC title

• C07D209/86 Primary

  with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the ring system · CPC title

• H01L51/5056

  Electricity · mapped topic

• H01L51/0058

  Electricity · mapped topic

• H01L51/5072

  Electricity · mapped topic