ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,948, issued on May 27, was assigned to Sharp Display Technology Corp. (Kameyama, Japan).

"Active matrix substrate and liquid crystal display device" was invented by Atsushi Hachiya (Kameyama, Japan), Hiroaki Furukawa (Kameyama, Japan), Yuhichi Saitoh (Kameyama, Japan) and Kuniaki Okada (Kameyama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An active matrix substrate includes a first TFT disposed in each of pixel regions, a first flattened layer covering the first TFT, and a pixel electrode provided on the first flattened layer. The first TFT includes a lower gate electrode, a lower gate insulating layer, an oxide semiconductor layer, an upp...