Patent ID: 7540193
Filing Date: 2009-06-02
Classification: G01P

Abstract:
1. A triaxial acceleration sensor module in which a triaxial acceleration sensor is packaged in a housing, the sensor module comprising: a hollow housing provided with a partition plate, the partition plate having a through-hole and having a lower surface; a triaxial acceleration sensor provided inside the housing, the triaxial acceleration sensor comprising: a sensor driving IC for detecting changes in resistance values of the piezo resistance elements when acceleration in a predetermined direction is applied to the triaxial acceleration sensor and thereby the weight member oscillates in the corresponding direction so that some of the piezo resistance elements are elastically deformed, the sensor driving IC having an upper surface, wherein the through-hole has a size so that the triaxial acceleration sensor is received through a predetermined gap between the outer peripheral surface of the frame and an inner peripheral of the partition plate defining the through-hole, and wherein the triaxial acceleration sensor is directly bonded to the upper surface of the sensor driving IC via the through-hole and the sensor driving IC is bonded to the lower surface of the partition plate of the housing.