US Patent Issued to International Business Machines on May 12 for "Stacked upper transistor and lower transistor" (New York Inventors)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,628,419, issued on May 12, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"Stacked upper transistor and lower transistor" was invented by Ruilong Xie (Niskayuna, N.Y.), Alexander Reznicek (Troy, N.Y.), Daniel Schmidt (Niskayuna, N.Y.) and Tsung-Sheng Kang (Ballston Lake, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor device includes one or more lower transistors and includes one or more upper transistors. The upper transistor(s) may be forksheet transistors or cells separated by a forksheet pillar. The upper transistor(s) are stacked vertically above respective lower transistor(s). The device width of the upper...