Patent ID: 7398694
Filing Date: 2008-07-15
Classification: G01L

Abstract:
1. A pressure sensor comprising: a substrate having a movable electrode formed on a diaphragm; and another substrate having an opposing electrode opposing the movable electrode, the substrates being bonded together at respective opposing surfaces via a conductive film, wherein the conductive film includes a conductive wire extending from one of the movable electrode and the opposing electrode and is formed in a pattern capable of sealing a predetermined region on the opposing surface side of the diaphragm as a pressure reference chamber; a lead wire extends from one of the movable electrode and the opposing electrode, the lead wire contacting the conductive film at a contact point; and at least one of the substrates including a thin-walled portion adjacent the contact point, the thin-walled portion being thinner than a surrounding area of the at least one of the substrates.