Patent ID: 7640807

Claim:
A semiconductor sensor comprising: a semiconductor sensor element including: a support portion; a diaphragm portion having an outer peripheral portion which is supported by the support portion, and made of a semiconductor material; a weight arranged in a central portion of the diaphragm portion; and a sensor element formed in the diaphragm portion and made of a diffused resistor; a semiconductor integrated circuit substrate electrically connected with the semiconductor sensor element for processing a signal outputted therefrom; and a casing made of an electrical insulating material for receiving the semiconductor sensor element and the semiconductor integrated circuit substrate, wherein a rear surface of the semiconductor integrated circuit substrate is joined onto a wall surface of the casing that defines a receiving chamber of the casing; wherein the support portion of the semiconductor sensor element is joined onto a front surface of the semiconductor integrated circuit substrate; and wherein a shock absorbing layer made of polyimide resin having a thickness of 1-10 μm is formed on the front surface of the semiconductor integrated circuit substrate at least on a portion thereof facing the weight of the semiconductor sensor element, for suppressing bouncing of the weight when the weight collides against the semiconductor integrated circuit substrate.