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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 11706937 B1

PDFFull Text
Date of Patent:
Jul. 18, 2023

Filed:

Nov. 03, 2020

Organic light-emitting device

Applicant:

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

Inventors:

Hyeongpil Kim, Yongin-si, KR;

Wonjong Kim, Yongin-si, KR;

Yeongrong Park, Yongin-si, KR;

Dongkyu Seo, Yongin-si, KR;

Junyong Shin, Yongin-si, KR;

Junghee An, Yongin-si, KR;

Byeongwook Yoo, Yongin-si, KR;

Daeho Lee, Yongin-si, KR;

Byungseok Lee, Yongin-si, KR;

Assignee:

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

Attorney:

Lewis Roca Rothgerber, Christie LLP

Primary Examiner:

Anthony Ho

Int. Cl.
CPC ...
H01L 51/50 (2006.01); H10K 50/13 (2023.01); H10K 50/19 (2023.01); H10K 50/155 (2023.01); H10K 50/15 (2023.01); H10K 85/60 (2023.01); H10K 101/30 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/131 (2023.02); H10K 50/155 (2023.02); H10K 50/156 (2023.02); H10K 50/19 (2023.02); H10K 85/615 (2023.02); H10K 85/622 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 2101/30 (2023.02); H10K 2102/351 (2023.02);
Abstract

An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; m emission units stacked between the first electrode and the second electrode, each emission unit including at least one emission layer; and m−1 charge generating layers respectively located between two adjacent emission units among them emission units, each of the charge generating layers including one n-type charge generating region and one p-type charge generating region, wherein m is an integer of 2 or more, and at least one of the m−1 p-type charge generating regions includes a phosphate-containing compound.

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