ALEXANDRIA, Va., June 6 -- United States Patent no. 12,283,246, issued on April 22, was assigned to BOE Technology Group Co. Ltd. (Beijing).

"Organic light emitting diode display substrate and preparation method thereof, and organic light emitting diode display apparatus" was invented by Jiangnan Lu (Beijing), Guangliang Shang (Beijing), Libin Liu (Beijing), Li Wang (Beijing), Xinshe Yin (Beijing) and Shiming Shi (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a display substrate including a display region and a non-display region. The non-display region is provided with a gate drive circuit, and the gate drive circuit includes a plurality of cascaded shift register units; a shift registe...