US Patent No. 10,586,891

LIGHT EMITTING DEVICE WITH IMPROVED EXTRACTION EFFICIENCY


Patent No. 10,586,891
Issue Date March 10, 2020
Title Light Emitting Device With Improved Extraction Efficiency
Inventorship Nathan Fredrick Gardner, Sunnyvale, CA (US)
Werner Karl Goetz, San Jose, CA (US)
Michael Jason Grundmann, San Jose, CA (US)
Melvin Barker Mclaurin, San Jose, CA (US)
John Edward Epler, San Jose, CA (US)
Michael David Camras, San Jose, CA (US)
Aurelien Jean Francois David, San Jose, CA (US)
Assignee Lumileds LLC, San Jose, CA (US)

Claim of US Patent No. 10,586,891

1. A method of manufacturing a light-emitting device (LED) comprising:providing a wafer comprising a plurality of III-nitride semiconductor layers on a non-III-nitride substrate that has an in-plane lattice constant not more than 1% different than a bulk lattice constant of at least one of the plurality III-nitride semiconductor layers;
attaching a first adhesive-coated film to a surface of one of the plurality of III-nitride semiconductor layers;
attaching a second adhesive-coated film to a surface of the non-III-nitride substrate; and
pulling the non-III-nitride substrate and the III-nitride semiconductor layers apart to remove the non-III-nitride substrate from the III-nitride semiconductor layers.