Patent ID: 7950288

Claim:
A physical quantity sensor for detecting a physical quantity comprising: a first substrate having a first principal surface and a first backside surface; a first element arranged on the first principal surface of the first substrate; a second substrate having a second principal surface and a second backside surface; a second element arranged on the second principal surface of the second substrate; and a first wiring layer and a second wiring layer, wherein the first principal surface of the first substrate faces and contacts the second principal surface of the second substrate so that an accommodation space is provided between the first substrate and the second substrate, wherein the second substrate includes a first through hole, which penetrates the second substrate from the second backside surface and reaches the first element on the first principal surface, wherein the second substrate further includes a second through hole, which penetrates the second substrate from the second backside surface and reaches the second element on the second principal surface, wherein the second substrate further includes a first through hole electrode and a second through hole electrode, wherein the first through hole electrode is arranged in the first through hole via an insulation film, and the second through hole electrode is arranged in the second through hole via the insulation film, wherein the first wiring layer is electrically coupled with the first through hole electrode, and the second wiring layer is electrically coupled with the second through hole electrode, wherein the first element is a sensor element having a movable portion, which is disposed in the accommodation space, wherein the second element is a semiconductor integrated circuit for processing a signal from the sensor element or for controlling the sensor element, and wherein the second element faces the accommodation space.