Patent ID: 8188555
Filing Date: 2012-05-29
Classification: B81B,B81C,G01P

Abstract:
1. A sensor comprising: a semiconductor substrate; a first electrode on a surface of or within the semiconductor substrate; a structure on the semiconductor substrate, the structure including a vibratable second electrode that is spaced from and opposed to the semiconductor substrate and the first electrode; a first sealing member on the semiconductor substrate spaced from the structure and covering the structure, and which includes a first through hole there through; a vibratable third electrode on the first sealing member blocking the first through hole, the vibratable third electrode spaced from and opposed to the vibratable second electrode; wherein the vibratable third electrode is aligned over the vibratable second electrode and the vibratable second electrode is aligned over the first electrode; a first detecting portion that measures a change of capacitance between the vibratable second electrode and the first electrode to detect an acceleration; a second detecting portion that measures a change of capacitance between the vibratable third electrode and the vibratable second electrode to detect a pressure; and wherein a member of the third electrode is attached only to a region of the first sealing member directly over the first through hole, on a surface of the first sealing member which is opposite to the semiconductor substrate.