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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 12370518 B1

PDFFull Text
Date of Patent:
Jul. 29, 2025

Filed:

Nov. 24, 2021

Core-shell structured perovskite nanocrystalline particle light-emitting body, method of preparing the same and light emitting device using the same

Applicant:

SN Display Co., Ltd., Seoul, KR;

Inventors:

Tae-Woo Lee, Pohang-si, KR;

Sanghyuk Im, Hwaseong-si, KR;

Young-Hoon Kim, Daejeon, KR;

Himchan Cho, Daegu, KR;

Assignee:

SN DISPLAY CO., LTD., , KR;

Attorney:

Renaissance IP Law Group LLP

Primary Examiner:

Hoa (holly) Le

Int. Cl.
CPC ...
C09K 11/72 (2006.01); B01J 13/06 (2006.01); C09K 11/02 (2006.01); C09K 11/06 (2006.01); C09K 11/66 (2006.01); H01G 9/20 (2006.01); H10K 50/135 (2023.01); H10K 71/15 (2023.01); H10K 85/30 (2023.01); H10K 85/50 (2023.01); B82Y 20/00 (2011.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01); H10K 30/30 (2023.01); H10K 30/35 (2023.01); H10K 30/50 (2023.01); H10K 50/11 (2023.01); H10K 50/115 (2023.01); H10K 85/10 (2023.01);
U.S. Cl.
CPC ...
B01J 13/06 (2013.01); C09K 11/025 (2013.01); C09K 11/06 (2013.01); C09K 11/665 (2013.01); H01G 9/2059 (2013.01); H10K 50/135 (2023.02); H10K 71/15 (2023.02); H10K 85/30 (2023.02); H10K 85/50 (2023.02); B82Y 20/00 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C09K 2211/10 (2013.01); C09K 2211/188 (2013.01); H10K 30/30 (2023.02); H10K 30/35 (2023.02); H10K 30/50 (2023.02); H10K 50/11 (2023.02); H10K 50/115 (2023.02); H10K 85/1135 (2023.02); Y10S 977/774 (2013.01); Y10S 977/812 (2013.01); Y10S 977/892 (2013.01); Y10S 977/948 (2013.01); Y10S 977/95 (2013.01);
Abstract

Provided are a core-shell structured perovskite nanocrystalline particle light-emitting body, a method of preparing the same, and a light emitting device using the same. The core-shell structured organic-inorganic hybrid perovskite nanocrystalline particle light-emitting body or metal halide perovskite nanocrystalline particle light-emitting body is able to be dispersed in an organic solvent, and has a perovskite nanocrystal structure and a core-shell structured nanocrystalline particle structure. Therefore, in the perovskite nanocrystalline particle light-emitting body of the present invention, as a shell is formed of a substance having a wider band gap than that of a core, excitons may be more dominantly confined in the core, and durability of the nanocrystal may be improved to prevent exposure of the core perovskite to the air using a perovskite or inorganic semiconductor, which is stable in the air, or an organic polymer.

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