ALEXANDRIA, Va., June 12 -- United States Patent no. 12,299,225, issued on May 13, was assigned to Kureha America Inc. (Houston).
"Touch sensing using polyvinylidene fluoride piezoelectric film" was invented by Mayu Komatsu (Houston), Tatsuya Yaguchi (Houston) and Naomitsu Nishihata (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "A piezoelectric sensing module includes a polyvinylidene fluoride (PVDF) piezoelectric film, a first electrode layer that includes multiple receiver electrodes arranged in a first pattern enabling a sensing of a position of an input object on a touch surface using the PVDF piezoelectric film, and a second electrode layer that includes at least one common electrode. The PVDF ...