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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12520653 B1

PDFFull Text
Date of Patent:
Jan. 06, 2026

Filed:

Nov. 15, 2021

Light-emitting device and electronic apparatus including the same

Applicant:

Samsung Electronics Co., Ltd., Suwon-si, KR;

Inventors:

Seungyeon Kwak, Suwon-si, KR;

Hyungjun Kim, Suwon-si, KR;

Myungsun Sim, Suwon-si, KR;

Kum Hee Lee, Suwon-si, KR;

Sunghun Lee, Hwaseong-si, KR;

Jeoungin Yi, Seoul, KR;

Byoungki Choi, Hwaseong-si, KR;

Kyuyoung Hwang, Anyang-si, KR;

Assignee:

SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do, KR;

Attorney:

CANTOR COLBURN LLP

Primary Examiner:

Alexander C Kollias

Int. Cl.
CPC ...
H01L 51/00 (2006.01); H10K 50/11 (2023.01); H10K 50/155 (2023.01); H10K 50/165 (2023.01); H10K 101/40 (2023.01);
U.S. Cl.
CPC ...
H10K 50/11 (2023.02); H10K 50/155 (2023.02); H10K 50/165 (2023.02); H10K 2101/40 (2023.02);
Abstract

Provided are a light-emitting device and an electronic apparatus including the same, the light-emitting device including: a first electrode; a second electrode facing the first electrode; and an emission layer between the first electrode and the second electrode. The emission layer includes i) a first emission layer and ii) a second emission layer located between the first emission layer and the second electrode, the first emission layer is in direct contact with the second emission layer, the first emission layer includes a dopant, a first hole-transporting compound, and a first compound, the second emission layer includes a dopant, a second hole-transporting compound, and a second compound, the dopant included in the first emission layer and the dopant included in the second emission layer are identical to each other, the first compound and the second compound are different from each other, and an absolute value of the difference between a HOMO energy level of the second hole-transporting compound and a HOMO energy level of the second compound is about 0.3 eV or less.

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