发明名称 Z-axis accelerometer with at least two gap sizes and travel stops disposed outside an active capacitor area
摘要 An accelerometer includes a pair of conductive plates fixedly mounted on a substrate surface, a structure coupled to the substrate surface and suspended above the conductive plates, and at least one protective shield mounted on the substrate surface. The structure includes two regions of differing total moments disposed above a respective conductive plate and separated by a flexure axis about which the structure rotates during an acceleration normal to the substrate, each region having a substantially planar outer surface and an inner surface having a first corrugation formed thereon. For each of the two regions, an inner gap exists between the first corrugation and an opposing conductive plate, and an outer gap exists between the substantially planar outer surface and the opposing conductive plate, the outer gap being larger than the inner gap. The at least one protective shield is placed apart from either of the conductive plates.
申请公布号 US7121141(B2) 申请公布日期 2006.10.17
申请号 US20050046596 申请日期 2005.01.28
申请人 FREESCALE SEMICONDUCTOR, INC. 发明人 MCNEIL ANDREW C.
分类号 G01P15/125;G01P15/00;G01P15/10 主分类号 G01P15/125
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