Patent ID: 11895911
Assignee: LG DISPLAY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 0:
1. An organic light-emitting device comprising:
a first electrode;
a second electrode; and
at least one organic material layer between the first and second electrodes,
wherein the at least one organic material layer includes at least one layer selected from the group consisting of a hole transport layer, an auxiliary hole transport layer and a light-emitting layer, and
wherein the at least one layer comprises at least two types of a compound represented by one of the following Chemical Formula 2, Chemical Formula 3, Chemical Formula 4, and Chemical Formula 5:, , , , , wherein:
X represents O or S,
each of R1 and R2 independently represents an aryl group having 6 to 30 carbon atoms, a heteroaryl group having 5 to 30 carbon atoms, an alkyl group having 1 to 15 carbon atoms, a halogen atom, or a deuterium atom,
each of Ar1 and Ar2 independently represents a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, an alkoxyl group having 1 to 30 carbon atoms, or an aryloxy group having 6 to 30 carbon atoms
a is an integer from 0 to 4, provided that when a is 2 or more, the corresponding R1 is the same as or different from each other, or adjacent corresponding R1s are bonded to each other to form a ring,
b is an integer from 0 to 3, provided that when b is 2 or more, the corresponding R2 is the same as or different from each other, or adjacent corresponding R2s are bonded to each other to form a ring,
m is an integer from 1 to 3,
each of c and d is independently an integer of 0 or 1, and
m, c and d are selected such that when m is 1, c+d=2, when m is 2, c+d=1, and when m is 3, c+d=0.