公开(公告)号：US12193253B2

公开(公告)日：2025-01-07

申请号：US17575583

申请日：2022-01-13

Applicant: Samsung Display Co., Ltd.

Inventor： Jimyoung Ye ,  Seulong Kim ,  Hyekyun Lee ,  Hajin Song ,  Jihwan Yoon ,  Dongseob Jeong ,  Jaehoon Hwang

IPC: H10K50/13 ,  H10K50/11 ,  H10K50/19 ,  H10K59/122 ,  H10K59/38 ,  H10K101/00 ,  H10K101/10

Abstract: A light emitting devices includes a first electrode, a hole transport region on the first electrode, a first emission layer on the hole transport region, the first emission layer to emit light of a first wavelength, a second emission layer on the hole transport region and to emit light of a second wavelength, an electron transport region on the first and second emission layers, and a second electrode on the electron transport region. The first emission layer includes a first sub-emission layer including a first hole transport host and a first sub-dopant to emit the light of the first wavelength, and a second sub-emission layer including a first electron transport and a second sub-dopant to emit the light of the first wavelength. The second emission layer includes a second hole transport host, a second electron transport host, and a second dopant to emit the light of the second wavelength.

公开(公告)号：US12127477B2

公开(公告)日：2024-10-22

申请号：US17329903

申请日：2021-05-25

Applicant: Samsung Display Co., Ltd.

Inventor： Jiyoung Song ,  Seulong Kim ,  Pilgu Kang ,  Eungyoung Park ,  Hajin Song ,  Hyekyun Lee ,  Soonchul Chang ,  Dongseob Jeong ,  Yangjin Cho ,  Jina Hur

IPC: H01L51/00 ,  H10K85/30 ,  H10K85/40 ,  H10K85/60 ,  H10K50/11 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/18 ,  H10K101/10

CPC classification number: H10K85/654 ,  H10K85/342 ,  H10K85/346 ,  H10K85/40 ,  H10K85/622 ,  H10K85/623 ,  H10K85/624 ,  H10K85/633 ,  H10K85/636 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576 ,  H10K50/11 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  H10K50/171 ,  H10K50/18 ,  H10K2101/10

Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; an emission region between the first electrode and the second electrode and including a first emission layer and a second emission layer; and a hole blocking layer between the first emission layer and the first electrode, or between the second emission layer and the second electrode, wherein the second emission layer may be between the first emission layer and the hole blocking layer, the first emission layer may include a first host and a first light-emitting material, the second emission layer may include a second host and a second light-emitting material, and the first light-emitting material and the second light-emitting material may respectively be included in the first emission layer and the second emission layer at an identical ratio.