Patent ID: 8607646

Claim:
A chip for a force sensor that detects an external force, comprising: a base member including: an action portion where the external force is applied; a support portion that supports the action portion therearound; and a connecting portion that connects the action portion and the support portion together; a plurality of strain detecting resistive elements that are formed at respective deformation producing portions of the base member which deform when the external force is applied; a thin-film resistor that is formed at upper layers of the strain detecting resistive elements with a resistive-element wiring and an interlayer insulation film intervening between the thin-film resistor and the strain detecting resistive elements; a high-potential electrode and a low-potential electrode that are formed on the support portion; and a thin-film-resistor wiring that connects the thin-film resistor to the high-potential electrode and to the low-potential electrode, wherein the thin-film resistor is formed to have an area covering the plurality of strain detecting resistive elements in a planar view has one end connected to the high-potential electrode through the thin-film-resistor wiring, and has another end connected to the low-potential electrode through the thin-film-resistor wiring.