logo

For the Inventor, By the Inventor

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 10676667 B1

PDFFull Text
Date of Patent:
Jun. 09, 2020

Filed:

Sep. 06, 2017

Quantum dot, manufacturing method of the dot, and compact, sheet member, wavelength conversion member and light emitting apparatus using the quantum dot

Applicant:

Ns Materials Inc., Fukuoka, JP;

Inventors:

Akiharu Miyanaga, Fukuoka, JP;

Eiichi Kanaumi, Fukuoka, JP;

Yoshikazu Nageno, Fukuoka, JP;

Assignee:

NS MATERIALS INC., Fukuoka, JP;

Attorney:

Greenblum & Bernstein, P.L.C.

Primary Examiner:

Brian Turner

Int. Cl.
CPC ...
B22F 9/24 (2006.01); B22F 9/16 (2006.01); C09K 11/88 (2006.01); B01J 13/04 (2006.01); H01L 33/54 (2010.01); B01D 21/26 (2006.01); B82Y 30/00 (2011.01); B01J 13/02 (2006.01); B01J 13/22 (2006.01); C09B 67/02 (2006.01); H01L 33/50 (2010.01); H01L 33/56 (2010.01); B82Y 20/00 (2011.01); B82Y 40/00 (2011.01);
U.S. Cl.
CPC ...
C09K 11/883 (2013.01); B01D 21/262 (2013.01); B01J 13/02 (2013.01); B01J 13/04 (2013.01); B01J 13/22 (2013.01); B82Y 30/00 (2013.01); C09B 67/0097 (2013.01); H01L 33/502 (2013.01); H01L 33/507 (2013.01); H01L 33/54 (2013.01); H01L 33/56 (2013.01); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01); H01L 2224/48091 (2013.01); Y10S 977/774 (2013.01); Y10S 977/892 (2013.01); Y10S 977/896 (2013.01); Y10S 977/95 (2013.01);
Abstract

To provide a quantum dot and manufacturing method of the dot particularly capable of reducing organic residues adhering to the quantum dot surface and of suppressing the black discoloration occurrence of a layer including the quantum dot positioned immediately above a light emitting device, and a compact, sheet member, wavelength conversion member and light emitting apparatus with high luminous efficiency using the quantum dot, a quantum dot of the present invention has a core portion including a semiconductor particle, and a shell portion with which the surface of the core portion is coated, and is characterized in that a weight reduction up to 490° C. is within 75% in a TG-DTA profile. Further, the quantum dot of the invention is characterized in that oleylamine (OLA) is not observed in GC-MS qualitative analysis at 350° C.

Find Patent Forward Citations

Loading…