ALEXANDRIA, Va., June 9 -- United States Patent no. 12,288,832, issued on April 29, was assigned to NICHIA Corp. (Anan, Japan).
"Method for manufacturing light-emitting element" was invented by Ryota Funakoshi (Tokushima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a light-emitting element includes forming a first light-emitting part, forming a tunnel junction part on the first light-emitting part, and forming a second light-emitting part on the tunnel junction part. The step of forming the first light-emitting part includes forming a first layer with a first p-type impurity concentration at a first temperature, and forming a second layer with a second p-type impurity conc...