ALEXANDRIA, Va., April 15 -- United States Patent no. 12,604,570, issued on April 14, was assigned to Samsung Display Co. Ltd. (Yongin-si, South Korea).

"Light-emitting device and display device having same" was invented by Hyun Deok Im (Yongin-si, South Korea), Jong Hyuk Kang (Yongin-si, South Korea) and Hyun Min Cho (Yongin-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light emitting device may include: an emission area; an insulating pattern in the emission area, the insulating pattern including at least one recess and a protrusion around the recess; a first electrode on the insulating pattern and overlapping a first area of the recess and the protrusion in a periphery of the first area...