公开(公告)号：US11329242B2

公开(公告)日：2022-05-10

申请号：US16897132

申请日：2020-06-09

Applicant: LG Display Co., Ltd.

Inventor： Jaemin Moon ,  Jina You ,  JungHyoung Lee ,  SunHee Lee ,  JangDae Youn

IPC: H01L51/50 ,  H01L51/52 ,  A61N5/06

Abstract: A lighting device comprises a substrate including an active area; a first electrode disposed on the substrate and including a transparent conductive material; an organic material layer disposed on the first electrode and including a first light emitting layer and a second light emitting layer; and a second electrode disposed on the organic material layer and including a reflective material, wherein the first light emitting layer emits light having a first wavelength and the second light emitting layer emits light having a second wavelength, and wherein the second light emitting layer includes a first dopant absorbing the light having the first wavelength and emitting the light having the second wavelength.

公开(公告)号：US11864401B2

公开(公告)日：2024-01-02

申请号：US16900254

申请日：2020-06-12

Applicant: LG Display Co., Ltd.

Inventor： JiNa You ,  JaeMin Moon ,  JuHyuk Kwon ,  SunHee Lee ,  JungHyoung Lee

IPC: H10K50/11 ,  H10K50/15 ,  H10K50/17 ,  H10K50/814 ,  H10K101/40 ,  H10K101/30 ,  H10K102/10 ,  H10K102/00

CPC classification number: H10K50/11 ,  H10K50/15 ,  H10K50/171 ,  H10K50/814 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2102/103 ,  H10K2102/351

Abstract: A light emitting device includes a substrate; a first electrode disposed on the substrate; an organic material layer disposed on the first electrode and including a first resonance auxiliary layer; and a second electrode disposed on the organic material layer, wherein the first resonance auxiliary layer includes a first compound with a lowest unoccupied molecular orbital (LUMO) level of −4 eV or less and a second compound with a highest occupied molecular orbital (HOMO) level of −4 eV or less, and wherein the first resonance auxiliary layer has a thickness of 20% to 90% of a total thickness of the organic material layer.