ALEXANDRIA, Va., April 21 -- United States Patent no. 12,610,660, issued on April 21, was assigned to National Tsing Hua University (Hsinchu City, Taiwan).
"Infrared light emitter" was invented by Chang-Hua Liu (Hsinchu City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An infrared light emitter includes a substrate, a first light-emitting layer, a blocking layer, and a second light-emitting layer. The second light-emitting layer is disposed on the substrate, the blocking layer is disposed on the second light-emitting layer, and the first light-emitting layer is disposed on the blocking layer. The first light-emitting layer, the blocking, and the second light-emitting layer form a P-N-P junction or ...