ALEXANDRIA, Va., June 17 -- United States Patent no. 12,316,991, issued on May 27, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Kanagawa-ken, Japan).

"Imaging device and electronic device" was invented by Shunpei Yamazaki (Tokyo) and Takayuki Ikeda (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An imaging device having a memory function is provided. Alternatively, an imaging device suitable for taking images of a moving object is provided. The imaging device includes first to third layers; the second layer is provided between the first and the third layer; the first layer includes a photoelectric conversion device; the second layer includes a first and a second circuit; the thir...