US 11,744,145 B2
Organic compound and organic electroluminescent device comprising the same
Inbum Song, Seoul (KR); Seunghee Yoon, Seoul (KR); Heejun Park, Paju-si (KR); Seonkeun Yoo, Gunpo-si (KR); Soyoung Jang, Seoul (KR); Sunghoon Kim, Seoul (KR); Seong-Min Park, Seoul (KR); Tae Wan Lee, Seoul (KR); Sunjae Kim, Goyang-si (KR); Dong Hun Lee, Seoul (KR); and Jeonghoe Heo, Seoul (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR); and MATERIAL SCIENCE CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR); and MATERIAL SCIENCE CO., LTD., Seoul (KR)
Filed on Nov. 5, 2019, as Appl. No. 16/674,966.
Claims priority of application No. 10-2018-0134274 (KR), filed on Nov. 5, 2018; application No. 10-2019-0093710 (KR), filed on Aug. 1, 2019; application No. 10-2019-0114335 (KR), filed on Sep. 17, 2019; and application No. 10-2019-0127747 (KR), filed on Oct. 15, 2019.
Prior Publication US 2020/0144506 A1, May 7, 2020
Int. Cl. H01L 51/00 (2006.01); H10K 85/60 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/81 (2023.01); H10K 50/82 (2023.01); H10K 50/17 (2023.01)
CPC H10K 85/624 (2023.02) [H10K 85/633 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/171 (2023.02); H10K 50/81 (2023.02); H10K 50/82 (2023.02)] 21 Claims
OG exemplary drawing
 
1. An organic electroluminescent device, comprising:
an anode;
a cathode; and
at least one organic layer between the anode and the cathode, the at least one organic layer including:
a light emitting layer; and
an organic layer disposed between the anode and the light emitting layer and including a compound represented by the following Chemical Formula 1:

OG Complex Work Unit Chemistry
wherein:
each of L1 and L2 is independently selected from the group consisting of a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heteroarylene group, a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, a substituted or unsubstituted C1 to C20 alkenylene group, a substituted or unsubstituted C3 to C20 cycloalkenylene group, a substituted or unsubstituted C1 to C20 heteroalkylene group, a substituted or unsubstituted C3 to C20 heterocycloalkylene group, a substituted or unsubstituted C1 to C20 heteroalkenylene group, and a substituted or unsubstituted C3 to C20 heterocycloalkenylene group,
Ar1 has one of the following structures:

OG Complex Work Unit Chemistry
Ar2 is a substituted or unsubstituted C8 to C30 condensed polycyclic aryl group, wherein the C8 to C30 condensed polycyclic aryl group does not include any heteroatom, and wherein Ar2 is different than Ar1,
each of R1, R2, R3 and R4 is independently selected from the group consisting of hydrogen, deuterium, a substituted or unsubstituted C1 to C20 alkyl group, a unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C1 to C20 alkenyl group, a substituted or unsubstituted C1 to C20 alkynyl group, a substituted or unsubstituted C1 to C20 heteroalkyl group, a substituted or unsubstituted C3 to C20 aralkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group, and a substituted or unsubstituted C3 to C20 heteroaralkyl group, and
each of k, l, m, and n is independently an integer of 0 to 4.