Patent ID: 7649150

Claim:
A sensor having a switch function manufactured by using a semiconductor integrated circuit technology, comprising: a first substrate made from a semiconductor material on which a conducting part of the switch is formed; a second substrate made from a semiconductor material or an insulating material on which a conducting part of the switch is formed; and a moving member made from a conducting material; wherein either the first or the second substrate has a cavity-shaped portion on a surface of which the conducting part is formed; the conducting part of either the first or the second substrate forms a flat surface electrode; and the moving member is movably held between the first and the second substrate; wherein the conducting part of the first or the second substrate having the cavity-shaped portion forms: a cavity-shaped electrode along a side surface part and a flat surface part of the cavity-shaped portion; a side surface electrode and a flat surface electrode on the side surface part and the flat surface part respectively; the side surface electrode only; or the flat surface electrode only; wherein each of the cavity-shaped electrode, the side surface electrode or the fiat surface electrode contains an electrode extraction part; wherein the electrode extraction part formed on the semiconductor includes a diffusion layer; and the conducting part of the first or the second substrate not having the cavity-shaped portion holding the moving member forms; the flat surface electrode having an electrode extraction part; or the flat surface electrode only.