Synaptics Incorporated
THREE LAYER FORCE PAD

Abstract:

A force pad sensor includes a face sheet including a force sensing resister, and a printed circuit board assembly. The printed circuit board assembly includes a proximity sensor layer including a proximity receiver electrode and a proximity transmitter electrode, and a force sensor layer including a force receiver electrode and a force transmitter electrode. The force receiver electrode and the FSR intersect a same vertical plane, the vertical plane being perpendicular to the face sheet.