ALEXANDRIA, Va., June 17 -- United States Patent no. 12,317,599, issued on May 27, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Atsugi, Japan).
"Liquid crystal display device and electronic device" was invented by Shunpei Yamazaki (Setagaya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "To reduce power consumption and suppress display degradation of a liquid crystal display device. To suppress display degradation due to an external factor such as temperature. A transistor whose channel formation region is formed using an oxide semiconductor layer is used for a transistor provided in each pixel. Note that with the use of a high-purity oxide semiconductor layer, off-state current of the tra...