ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,552, issued on April 29, was assigned to JAPAN DISPLAY INC. (Tokyo).

"Display device" was invented by Hajime Watakabe (Tokyo), Masashi Tsubuku (Tokyo), Toshinari Sasaki (Tokyo) and Takaya Tamaru (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A display device includes a plurality of pixel electrodes each connected to a semiconductor device, a plurality of common electrodes each disposed opposite to a part of the plurality of pixel electrodes, and a plurality of common wirings each connected to the plurality of common electrodes. The semiconductor device includes an oxide semiconductor layer having a polycrystalline structure, and at least a par...