Patent ID: 9543948
Date: 2017-01-10
CPC Classifications: H01H,H03K

Claim:
1. A physical force capacitive touch sensor, comprising: a substrate; a capacitive sensor element on a face of the substrate comprising an array of electrodes; a cover comprising a first section forming a substantially non-deformable spacer on the substrate that surrounds the capacitive sensor element and a second section forming a flexible cover covering the capacitive sensor element; an electrically conductive plane coupled with the flexible cover via an array of pedestals and being proximate to the capacitive sensor element and being arranged to at least partially cover each electrode in said array of electrodes; wherein a density of pedestals in the array of pedestals coupled between the flexible cover and the electrically conductive plane is greater than a density of electrodes in the array of electrodes; and wherein when a mechanical force is applied to the flexible cover, the flexible cover and electrically conductive plane are biased toward the capacitive sensor element, whereby the capacitive sensor element changes capacitance value.