公开(公告)号：US20230217669A1

公开(公告)日：2023-07-06

申请号：US18082583

申请日：2022-12-16

Applicant: LG Display Co., Ltd.

Inventor： Myeong Seon CHO ,  Wook SONG ,  Sae Mi PARK ,  Jung Keun KIM ,  Do Han KIM ,  Byung Soo KIM ,  Hye Seung KANG

IPC: H10K50/13 ,  H10K50/12 ,  H10K50/15 ,  H10K50/16 ,  H10K59/35 ,  H10K85/60

CPC classification number: H10K50/13 ,  H10K50/12 ,  H10K50/15 ,  H10K50/16 ,  H10K59/351 ,  H10K85/654 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576 ,  B82Y30/00

Abstract: A light emitting device including a first electrode and a second electrode facing each other, and a first blue stack, a first charge generation layer, and a phosphorescent stack disposed between the first electrode and the second electrode. The phosphorescent stack includes a hole transport layer, a red light emitting layer, a green light emitting layer, and an electron transport layer. The red light emitting layer includes an electron transport host represented by Formula 1, a hole transport host different from the hole transport layer, and a red dopant.

公开(公告)号：US20230217816A1

公开(公告)日：2023-07-06

申请号：US18084235

申请日：2022-12-19

Applicant: LG Display Co., Ltd.

Inventor： Wook SONG ,  Myeong Seon CHO ,  Sae Mi PARK ,  Jung Keun KIM ,  Do Han KIM ,  Byung Soo KIM ,  Hye Seung KANG

IPC: H10K85/60 ,  H10K50/13

CPC classification number: H01L51/0067 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/0074 ,  H01L51/504 ,  H01L51/5012

Abstract: Disclosed is a light emitting device capable of improving color purity and luminance, reducing a material driving voltage, and exhibiting a longer lifespan by changing the configuration of a green stack. The light emitting device includes a first electrode and a second electrode facing each other, and a light emitting unit including a p-type charge generation layer, a hole transport layer, and a green light emitting layer, which are sequentially stacked, wherein the green light emitting layer includes a triazine-based compound as a host and a phosphorescent dopant.

公开(公告)号：US20210313519A1

公开(公告)日：2021-10-07

申请号：US17287983

申请日：2020-09-22

Applicant: LG DISPLAY CO., LTD. ,  Rohm and Haas Electronic Materials Korea Ltd.

Inventor： Do Han KIM ,  Hye Seung KANG ,  Kyoung Jin PARK ,  Chi Sik KIM ,  Hyun KIM

IPC: H01L51/00 ,  C07D487/04 ,  C09K11/06 ,  C07D491/048

Abstract: The present disclosure relates to an organic light emitting diode that comprises an organic compound in which a carbazole moiety fused with an aromatic ring and a hetero aromatic ring is linked to a triazine moiety substituted with aromatic and/or hetero aromatic groups via an aromatic linker, and at least one protium constituting the aromatic and/or hetero aromatic groups of the triazine moiety and the aromatic linker moiety is substituted with deuterium, and an organic light emitting device including the diode. The molecular conformation of the deuterium-substituted triazine moiety and the aromatic linker moiety is not deteriorated and dissolved, and therefore, the organic compound can implement luminous efficiency and luminous lifetime as an organic compound in which whole protiums are substituted with deuteriums.