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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 12369483 B1

PDFFull Text
Date of Patent:
Jul. 22, 2025

Filed:

Oct. 22, 2021

Light-emitting device comprising multi-layered electrode and electronic apparatus including the same

Applicant:

Samsung Display Co., Ltd., Yongin-si, KR;

Inventors:

Myoungjin Park, Yongin-si, KR;

Changhee Lee, Yongin-si, KR;

Jaehong Park, Yongin-si, KR;

Jingoo Kang, Yongin-si, KR;

Seokgyu Yoon, Yongin-si, KR;

Jaeyong Lee, Yongin-si, KR;

Assignee:

Samsung Display Co., Ltd., Yongin-si, KR;

Attorney:

Womble Bond Dickinson (US) LLP

Primary Examiner:

Daniel Whalen

Int. Cl.
CPC ...
H10K 59/80 (2023.01); H10K 50/115 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/18 (2023.01); H10K 50/818 (2023.01); H10K 50/852 (2023.01); H10K 59/12 (2023.01); H10K 102/00 (2023.01); H10K 102/10 (2023.01);
U.S. Cl.
CPC ...
H10K 59/80517 (2023.02); H10K 50/115 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/17 (2023.02); H10K 50/18 (2023.02); H10K 50/818 (2023.02); H10K 50/852 (2023.02); H10K 50/171 (2023.02); H10K 59/12 (2023.02); H10K 59/80518 (2023.02); H10K 59/876 (2023.02); H10K 59/878 (2023.02); H10K 2102/00 (2023.02); H10K 2102/101 (2023.02); H10K 2102/102 (2023.02); H10K 2102/103 (2023.02); H10K 2102/3026 (2023.02);
Abstract

A light-emitting device includes: a first electrode; a second electrode; an interlayer between the first electrode and the second electrode and including an emission layer; a hole transport region between the first electrode and the emission layer; and an electron transport region between the second electrode and the emission layer, wherein the first electrode is a multi-layered electrode including: a first layer including a first material, a second layer disposed on the first layer and including a second material, and a third layer between the second layer and the hole transport region and including a third material, wherein a first surface of the third layer contacts the second layer, and a second surface of the third layer facing the first surface directly contacts the hole transport region, and the third material has a work function of greater than about 4.8 eV and less than or equal to about 6.8 eV.

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