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:
Oct. 12, 2021
Filed:
Jun. 10, 2019
Facebook Technologies, Llc, Menlo Park, CA (US);
William Padraic Henry, Cork, IE;
James Ronald Bonar, Redmond, WA (US);
Gareth Valentine, Redmond, WA (US);
FACEBOOK TECHNOLOGIES, LLC, Menlo Park, CA (US);
Abstract
Disclosed herein are techniques for wafer-to-wafer bonding for manufacturing light emitting diodes (LEDs). In some embodiments, a method of manufacturing LEDs includes modifying a p-type layer of a semiconductor material to form a plurality of alternating high resistivity areas and low resistivity areas, wherein the low resistivity areas correspond to light emitters; bonding a base wafer to a first surface of the p-type layer; removing a substrate from a second surface of the semiconductor material, wherein the second surface of the semiconductor material is opposite to the first surface of the p-type layer; and patterning a trench between each adjacent pair of the light emitters.