US Patent Issued to CHICONY ELECTRONICS on Oct. 27 for "Membrane keyboard and manufacturing method thereof" (Taiwanese Inventors)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,776,458, issued on Oct. 27, was assigned to CHICONY ELECTRONICS Co. LTD. (New Taipei City, Taiwan).

"Membrane keyboard and manufacturing method thereof" was invented by Chih-Yi Lu (New Taipei City, Taiwan) and Chih-Hung Lin (New Taipei City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A membrane keyboard and manufacturing method thereof, the manufacturing method comprises the following steps: forming a first positioning hole on an upper circuited layer, forming a second positioning hole and a plurality of hollow portions on a spacer layer, forming a third positioning hole on a lower circuited layer, wherein a minimum diameter of the second pos...