ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,537,148, issued on Jan. 27, was assigned to DARWIN PRECISIONS Corp. (Hsinchu County, Taiwan).
"Button" was invented by Hsing-Yu Chen (Hsinchu County, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A button includes a substrate, a frame body, an optical pressure board assembly and an optical trigger switch. The substrate includes a physical key and a light emitting assembly. The frame body mounted on the substrate accommodates the physical key and the light emitting assembly. A side of the frame body away from the substrate includes an opening. The optical pressure board assembly is slidably arranged in the frame body and covers the physical key a...