Patent ID: 11864460
Assignee: LG CHEM, LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. An organic light emitting device comprising:
a first electrode;
a second electrode provided opposite to the first electrode; and
an organic material provided between the first electrode and the second electrode,
wherein the organic material includes a hole transfer layer and an electron blocking layer, and the hole transfer layer and the electron blocking layer include a compound of the following Chemical Formula 1;
the materials of the hole transfer layer and the electron blocking layer are different from each other; and
the organic material further comprising one or more layers that are neither the hole transfer layer nor the electron blocking layer include a compound of the following Chemical Formula 2:, in Chemical Formula 1,
Ar1 and Ar2 are the same as or different from each other, and each independently a substituted or unsubstituted aryl group including one or two 6-membered rings, or a substituted or unsubstituted heteroaryl group;
a and b are the same as or different from each other, and each independently a substituted or unsubstituted aromatic ring;
X1 and X2 are the same as or different from each other, and each independently a direct bond or CRR′; and
when one of X1 and X2 is a direct bond, the other one is CRR′,, in Chemical Formula 2,
Ar3 is a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group;
L is a substituted or unsubstituted arylene group;
R, R′, R1 and R2 are the same as or different from each other, and each independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, or bond to adjacent substituents to form a substituted or unsubstituted hydrocarbon ring;
a is an integer of 0 to 8;
b is an integer of 0 to 7;
when a is a plural number, R1S are the same as or different from each other; and
when b is a plural number, R2S are the same as or different from each other.