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:
Aug. 04, 2020
Filed:
Jun. 19, 2019
Soraa, Inc., Fremont, CA (US);
Aurelien J. F. David, San Francisco, CA (US);
Christophe Hurni, Fremont, CA (US);
Nathan Young, Fremont, CA (US);
ECOSENSE LIGHTING, INC., Los Angeles, CA (US);
Abstract
A method of improving high-current density efficiency of an LED, said method comprising: (a) preparing a series of LEDs having decreasing defect densities, wherein each LED of said series has a peak IQE of at least 50%, and wherein each LED of said series has the same epitaxial structure; (b) determining an increase in IQEs at high-current density between at least two LEDs of said series; (c) preparing at least an additional LED of said series by reducing defect density relative to the previously obtained lowest defect density; and (d) reiterating steps (b) and (c) until said increase is at least 3% between two LEDs of said series having a decrease X in defect densities.