Patent ID: 7249510
Filing Date: 2007-07-31
Classification: G01P,H01L

Abstract:
1. A semiconductor acceleration sensor, comprising: a weight section, which has a first surface; flexible sections, which support the weight section and have measurement elements; a chip main body, which has a second surface having chip electrodes electrically connected to the measurement elements and supports the flexible sections, wherein the second surface and the first surface are on a same side of said chip main body and at a same level; the semiconductor acceleration sensor further comprising a bonding section provided on the first surface of the weight section; an additional weight, which has a bottom surface, wherein the bottom surface is connected to the bonding section of the weight section; a substrate, which has terminals, and mounts the chip main body; and bonding wires for electrically connecting the chip electrodes and the terminals; wherein the additional weight has an inclined face, which surrounds the bonding section, and said additional weight reduces in size toward the bonding section and toward the bottom surface of said additional weight.