ALEXANDRIA, Va., April 7 -- United States Patent no. 12,598,789, issued on April 7, was assigned to International Business Machines Corp. (Armonk, N.Y.).
"Self-aligned backside contact" was invented by Tao Li (Slingerlands, N.Y.), Ruilong Xie (Niskayuna, N.Y.), Shogo Mochizuki (Mechanicville, N.Y.) and Nicolas Jean Loubet (Guilderland, N.Y.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor structure including a first transistor including a first placeholder and a first gate pitch and a second transistor including a second placeholder and a second gate pitch, where the first gate pitch is less than the second gate pitch, and wherein the first placeholder is smaller than the second placeholder."
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