ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,237,335, issued on Feb. 25, was assigned to Japan Display Inc. (Tokyo).
"Display device and manufacturing method thereof" was invented by Yohei Yamaguchi (Minato-ku, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The purpose of the invention is to form a stable oxide semiconductor TFT in a display device. The concrete structure is: A display device having a TFT substrate that includes a TFT having an oxide semiconductor layer comprising: the oxide semiconductor layer is formed on a first insulating film that is formed by a silicon oxide layer, the oxide semiconductor layer and an aluminum oxide film are directly formed on the first insulating film...