Patent ID: 7385296

Claim:
A sensor comprising: a first chip; a second chip disposed on the first chip through an adhesive member; and a stopper, wherein the second chip is connected to the first chip through a bonding wire, the stopper limits a displacement of the second chip when the adhesive member is deformed, and the stopper is disposed adjacent to the second chip, the first chip is a circuit chip, the second chip is a sensor chip, the stopper is a second bonding wire disposed on a part of the first chip, the part being disposed outside of a periphery of the second chip, the second bonding wire has a loop shape with a height defined from a surface of the first chip to a top of the loop shape, the height of the loop shape is larger than a distance between the surface of the first chip and the adhesive member, the stopper limits a horizontal displacement of the second chip, the horizontal displacement being in parallel to the surface of the first chip, the second chip has a rectangular shape, the second bonding wire of the stopper has an inverted horseshoe arch shape, and is disposed outside of a corner of the rectangular shape of the second chip, and the second bonding wire of the stepper has two ends, each of which is connected to a surface of the first chip.