US Patent Issued to ROHM on June 2 for "Semiconductor device" (Japanese Inventor)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,648,197, issued on June 2, was assigned to ROHM Co. LTD. (Kyoto, Japan).

"Semiconductor device" was invented by Shinya Umeki (Kyoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor device includes a first conductive type semiconductor layer which has a principal surface, a second conductive type well region which demarcates an active region and an outer region on the principal surface and is formed on a surface layer portion of the principal surface and includes a high concentration portion high in impurity concentration on the active region side and includes a low concentration portion lower in impurity concentration than the high c...