ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,543,407, issued on Feb. 3, was assigned to ENKRIS SEMICONDUCTOR INC. (Suzhou, China).

"Semiconductor light-emitting device and preparation method thereof" was invented by Kai Cheng (Suzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a semiconductor light-emitting device and a preparation method of the semiconductor light-emitting device. The preparation method of the semiconductor light-emitting device includes: forming a mask layer on a substrate, the mask layer is provided with a plurality of openings exposing the substrate; etching the substrate at each of the plurality of openings to form a first groove, and forming a first re...