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.:
Date of Patent:
Mar. 03, 2020
Filed:
Jul. 24, 2015
Lumileds Llc, San Jose, CA (US);
Roelof Koole, Eindhoven, NL;
Patrick John Baesjou, Eindhoven, NL;
Marcel Rene Bohmer, Eindhoven, NL;
Joep Lodewijk Peters, Eindhoven, NL;
LUMILEDS LLC, San Jose, CA (US);
Abstract
The invention provides a method for the production of a luminescent material, () based on coated quantum dots (), comprising: (i) providing luminescent quantum dots () in a liquid medium () wherein the luminescent quantum dots () have an outer layer () comprising first cations and first anions; and (ii) providing in a coating process a coating () on the outer layer () of the quantum dots () in the liquid medium (), wherein the coating () comprises a silica coating; wherein during the coating process, or after the coating process, or during and after the coating process, the liquid medium () comprises one or more of a third element and a fourth element, wherein the first cation and the third element belong to the same group of the periodic system, and wherein the first anion and the fourth element belong to the same group of the periodic system.