US 12,461,278 B2
Light emitting element, display device including the same, and charge transport material for the light emitting element
Junwoo Park, Daejeon (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Oct. 26, 2021, as Appl. No. 17/511,114.
Claims priority of application No. 10-2021-0029291 (KR), filed on Mar. 5, 2021.
Prior Publication US 2022/0285618 A1, Sep. 8, 2022
Int. Cl. G02B 1/04 (2006.01); C08K 5/28 (2006.01); C09K 11/06 (2006.01); G06F 1/16 (2006.01); H10K 50/15 (2023.01); H10K 59/10 (2023.01); H10K 71/12 (2023.01); H10K 85/10 (2023.01)
CPC G02B 1/04 (2013.01) [C08K 5/28 (2013.01); C09K 11/06 (2013.01); G06F 1/1652 (2013.01); H10K 71/12 (2023.02); H10K 85/146 (2023.02); H10K 50/15 (2023.02); H10K 59/10 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A light-emitting element comprising:
a first electrode, a second electrode, and at least one functional layer disposed between the first electrode and the second electrode,
the at least one functional layer including a charge transport material that is derived from a mixture of an azide compound represented by Formula 1 and a polymer compound including an aromatic ring group:

OG Complex Work Unit Chemistry
wherein, in Formula 1,
n1 is an integer of 1 to 9,
R1 and R2 are each independently a hydrogen atom or an optionally substituted alkyl group having 1 to 10 carbon atoms,
R3 and R4 are each independently a hydrogen atom or an optionally substituted alkyl group having 1 to 9 carbon atoms,
wherein a mole ratio of moles of the azide compound of Formula 1 to moles of the polymer compound is about 1:1.85 to about 1:3.0, and the azide compound includes only one azide group.