US 11,903,307 B2
Organic compound, and light-emitting diode and light-emitting device including the same
Young-Ju Ryu, Paju-si (KR); Kyu-Nam Kim, Paju-si (KR); and Jae-Hyun Park, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Nov. 16, 2018, as Appl. No. 16/193,715.
Claims priority of application No. 10-2017-0154102 (KR), filed on Nov. 17, 2017.
Prior Publication US 2019/0157566 A1, May 23, 2019
Int. Cl. H10K 85/60 (2023.01); C07D 495/04 (2006.01); H10K 50/115 (2023.01); H10K 50/15 (2023.01)
CPC H10K 85/636 (2023.02) [C07D 495/04 (2013.01); H10K 85/633 (2023.02); H10K 50/115 (2023.02); H10K 50/156 (2023.02); H10K 85/626 (2023.02); H10K 85/6572 (2023.02); H10K 85/6576 (2023.02)] 10 Claims
OG exemplary drawing
 
1. A light-emitting diode, comprising:
a first electrode;
a hole injection layer;
a hole transport layer;
an emitting material layer;
an electron transport layer; and
a second electrode,
wherein the hole transport layer comprises a cross-linked compound derived from a compound having the following structure of Formula 1:

OG Complex Work Unit Chemistry
wherein:
R1 and R2 are each independently

OG Complex Work Unit Chemistry
R3 and R4 are each independently

OG Complex Work Unit Chemistry
L1, L2, L3, and L4 are each independently

OG Complex Work Unit Chemistry
a and b are each independently 0 or 1;
c and d are each independently 1 or 2, and
wherein:
the hole injection layer consists of poly(ethylenedioxythiophene):polystyrenesulfonate;
the hole transport layer comprises:
a first hole transport layer over the hole injection layer, and
a second hole transport layer over the first hole transport layer; and
the second hole transport layer consists of the cross-linked compound.