Patent ID: 7536923

Claim:
A force sensor chip having a multiaxial force sensing function, comprising: a base member having an operating part provided with an external action area part, a supporting part for supporting the operating part, and connecting parts which connects the operating part and the supporting part, the base member having a top surface, a bottom surface and a thickness between the top surface and bottom surface; and strain resistance elements disposed in the connecting parts or within boundaries between the connecting parts and the operating part, wherein the base member has an area of reduced thickness, the area of reduced thickness is configured to include as a whole each of the connecting parts, and the area of reduced thickness has a first boundary disposed in the supporting part and a second boundary disposed in the operating part, the first boundary being neither disposed in said connecting part nor coincident with a junction between each said connecting part and the supporting part, the second boundary being neither disposed in each said connecting part nor coincident with a junction between each said connecting part and the operating part.