Patent ID: 6190571
Filing Date: 2001-02-20
Classification: G01C

Abstract:
A manufacturing method of a semiconductor micromachine having a substrate, a movable portion arranged opposite said substrate with a gap interposed therebetween, said movable portion comprising a semiconductor having a plurality of electrode sections and an electrical insulation section interconnecting the electrode sections, and supporting bodies which floatably support said movable portion, comprising the steps of:forming an etching layer on said substrate;forming a diffusion inhibiting layer on said etching layer;forming a semiconductor layer on said diffusion inhibiting layer;selectively doping said semiconductor layer with a dopant;patterning said semiconductor layer by photolithographic etching to form holes for introducing an etchant, said plurality of electrode sections, said electrical insulation section, and said supporting bodies; andforming said gap and said semiconductor layer as the movable portion by removing said etching layer using said etchant.