Patent ID: 7263885

Claim:
A physical quantity sensor comprising: a circuit chip; and a sensor chip disposed on the circuit chip through an adhesive layer, wherein the sensor chip includes: a support substrate; a movable electrode movable in a horizontal direction of the substrate; and a pair of fixed electrodes facing the movable electrode with a detection distance therebetween, the sensor chip is capable of detecting a physical quantity applied to the sensor on the basis of a distance change of the detection distance in accordance with a displacement of the movable electrode, the movable electrode and the fixed electrodes are disposed in the substrate, the adhesive layer includes a non-adhesive region and a conductive member, the non-adhesive region is disposed on a region obtained by projecting the sensor chip to the circuit chip, the conductive member is disposed in the non-adhesive region for electrically connecting between the circuit chip and the substrate, and the non-adhesive region is disposed on a region obtained by projecting the movable portion in the sensor chip to the circuit chip.