ALEXANDRIA, Va., March 12 -- United States Patent no. 12,250,855, issued on March 11, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Atsugi, Japan).
"Semiconductor device" was invented by Shunpei Yamazaki (Setagaya, Japan), Kengo Akimoto (Atsugi, Japan), Shigeki Komori (Isehara, Japan), Hideki Uochi (Atsugi, Japan), Rihito Wada (Atsugi, Japan) and Yoko Chiba (Atsugi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A display device includes a pixel portion in which a pixel is arranged in a matrix, the pixel including an inverted staggered thin film transistor having a combination of at least two kinds of oxide semiconductor layers with different amounts of oxygen and having a channel protectiv...