Patent ID: 6048774
Filing Date: 2000-04-11
Classification: G01P

Abstract:
A method of manufacturing a dynamic amount semiconductor sensor comprising a support substrate having first and second anchor parts protruding from a surface thereof, a beam structure supported by the first anchor part and having a movable electrode displaceable by a dynamic amount, and a fixed electrode supported by the second anchor part to face the movable electrode, the method comprising steps of:forming a sacrificial layer on a first semiconductor substrate, the first semiconductor substrate being for forming the beam structure and the fixed electrode;forming an insulating layer on the sacrificial layer;forming first and second opening portions in the insulating layer and in the sacrificial layer where the first and second anchor parts are to be formed, at least one of the first and second opening portions being composed of a plurality of openings;forming a first thin film on the insulating layer, the first thin film being for forming the first and second anchor parts;forming a second thin film on the first thin film;flattening a surface of the second thin film on an opposite side of the first thin film;bonding the first semiconductor substrate and a second semiconductor substrate for serving as the support substrate with the second thin film interposed therebetween; andremoving the sacrificial layer.