Patent ID: 11954285
Assignee: SENSEL, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 17:
18. The system of claim 17:
wherein the first region of the deflection layer:
entraps the volume of air of a nominal height of approximately 10 microns over the first drive and sense electrode pair in a nominal state during absence of inputs over the substrate;
comprises a conductive material that electrically shields the first drive and sense electrode pair from electrical noise over the substrate; and
displaces air laterally across the substrate and moves toward the first drive electrode and sense electrode pair to increase capacitance of the first drive and sense electrode pair responsive to application of the first input at the first location proximal the first drive electrode and sense electrode pair; and

wherein the controller is configured to:
interpret a displacement of the volume of air, from the nominal height, proportional to the amplitude of the first alternating component of the first sense signal;
retrieve a spring model representing combined spring constants of the deflection layer and the volume of air between the deflection layer and the substrate; and
interpret a first force magnitude of the first input on the touch sensor based on the displacement and the spring constant.