Patent ID: 9506830
Filing Date: 2016-11-29
CPC Classification: G01L

Claim Text:
1. A pressure sensor comprising: a diaphragm which receives a pressure of a fluid; a semiconductor type pressure detecting device which is provided with a plurality of bonding pads including an earth pad; a base which forms in relation to said diaphragm a pressure receiving space in which an insulative medium is sealed, and is provided within said pressure receiving space with said semiconductor type pressure detecting device; and a plurality of terminal pins which are implanted in said base and are electrically connected to said semiconductor type pressure detecting device, and one earth terminal pin which is connected to a zero potential of an electric circuit, wherein a neutralization plate is provided on said base at a peripheral position or a part of the peripheral position of said semiconductor type pressure detecting device, wherein said neutralization plate is arranged at a position at which a height from said base is the same as or lower than a height of said semiconductor type pressure detecting device from said base, and wherein said neutralization plate is electrically connected to said earth pad of said semiconductor type pressure detecting device and said earth terminal pin.