ALEXANDRIA, Va., April 9 -- United States Patent no. 12,274,144, issued on April 8, was assigned to Sharp K.K. (Sakai, Japan).

"Light-emitting device and method of manufacturing light-emitting device capable of restraining the expansion of dark spots" was invented by Shigeru Aomori (Sakai, Japan), Tsuyoshi Kamada (Sakai, Japan) and Yasushi Asaoka (Sakai, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting device includes a light-emitting layer that includes, in each of a plurality of pixels: a light-emitting region in which a drive current flows between a first electrode and a second electrode; and a non-light-emitting region in which no drive current flows between the first electrode and t...