US Patent Issued to BOE Technology Group on Feb. 17 for "Display substrate, display apparatus and mask plate" (Chinese Inventor)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,557,514, issued on Feb. 17, was assigned to BOE Technology Group Co. Ltd. (Beijing).

"Display substrate, display apparatus and mask plate" was invented by Shu Jing (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The display substrate includes: a base substrate including sub-pixel regions with opening regions and non-opening regions; light-emitting devices each including a first electrode, a light-emitting layer and a second electrode; a first light extraction layer between a light-emitting layer and a second electrode; and a second light extraction layer on the side of the second electrode away from the first light extraction layer. The first li...