Patent ID: 7002227

Claim:
A pressure detecting device comprising: a semiconductor substrate for outputting an electrical signal in accordance with pressure applied in a thickness direction of the semiconductor substrate, wherein the semiconductor substrate has a first electrode on a front surface thereof and a second electrode on a back surface thereof, the electrical signal being output through the first electrode and the second electrode when the pressure is applied; a pressure transmitting member that is equipped at the front surface side of the semiconductor substrate and that transmits pressure to the front surface side of the semiconductor substrate, wherein the pressure transmitting member has electrically conductive properties, wherein the first electrode is electrically connected to the pressure transmitting member; a housing in which the semiconductor substrate and the pressure transmitting member are accommodated, wherein the pressure transmitting member is electrically connected to the housing; and a lead member electrically independent of the housing and accommodated in the housing at the back surface side of the semiconductor substrate, wherein the lead member and the second electrode are electrically connected to each other.