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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 12742116 B1

PDFFull Text
Date of Patent:
Sep. 22, 2026

Filed:

Mar. 28, 2022

Quantum dot device and electronic device

Applicant:

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

Inventors:

Heejae Lee, Seongnam-si, KR;

Soonmin Cha, Suwon-si, KR;

Tae Hyung Kim, Seoul, KR;

Dae-Hee Lee, Hwaseong-si, KR;

Eun Joo Jang, Suwon-si, KR;

Hyo Sook Jang, Suwon-si, KR;

Dae Young Chung, Suwon-si, KR;

Moon Gyu Han, Suwon-si, KR;

Assignees:

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

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

Attorney:

CANTOR COLBURN LLP

Primary Examiner:

Eric A Ward

Int. Cl.
CPC ...
H10K 50/115 (2023.01); C09K 11/56 (2006.01); C09K 11/88 (2006.01); B82Y 20/00 (2011.01); B82Y 40/00 (2011.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 71/40 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
C09K 11/565 (2013.01); C09K 11/883 (2013.01); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01); H10K 50/11 (2023.02); H10K 50/115 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 71/40 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02); H10K 2102/00 (2023.02);
Abstract

A quantum dot device and an electronic device. The quantum dot device includes a first electrode and a second electrode, a light emitting layer disposed between the first electrode and the second electrode and including quantum dots, a first charge auxiliary layer disposed between the second electrode and the light emitting layer and enhancing transport of first charge carriers from the second electrode to the light emitting layer, and a buffer layer disposed between the light emitting layer and the first charge auxiliary layer and enhancing extraction of second charge carriers from the light emitting layer.

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