ALEXANDRIA, Va., June 18 -- United States Patent no. 12,328,978, issued on June 10, was assigned to Seoul Viosys Co. Ltd. (Ansan-si, South Korea).
"UV LED with electrode with irregular surface" was invented by Seong Kyu Jang (Ansan-si, South Korea), Ju Yong Park (Ansan-si, South Korea), Kyu Ho Lee (Ansan-si, South Korea) and Joon Hee Lee (Ansan-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor light emitting device includes: a first semiconductor layer; an active layer disposed on the first semiconductor layer to emit ultraviolet light; a second semiconductor layer disposed on the active layer; a contact electrode disposed on the first semiconductor layer; a first electrode inclu...