Patent ID: 6673694
Filing Date: 2004-01-06
Classification: B81B,B81C

Abstract:
A method for producing micromachined devices, comprising the steps of:(a) obtaining a Silicon-On-Insulator (SOI) wafer, which comprises (i) a handle layer, (ii) a dielectric layer, and (iii) a device layer; wherein a mesa etch has been made on the device layer of the SOI wafer, and a structural etch has been made in the device layer of the SOI wafer, such that the etch is straight down through the device layer to the dielectric layer; (b) obtaining a substrate, wherein a pattern has been formed onto the substrate; (c) bonding the SOI wafer and the substrate together; (d) removing the handle layer of the SOI wafer by a wet chemical etch; (e) removing the dielectric layer of the SOI wafer by a dry plasma etch.