Patent ID: 6780336
Filing Date: 2004-08-24
Classification: B05B,H01J,Y10S

Abstract:
A method for fabricating a microelectromechanical device, comprising the steps of:a) providing a silicon substrate having first and second opposing surfaces; b) forming first and second silicon oxide layers on said first and second surfaces of said substrate, respectively; c) coating a first photoresist layer on said first silicon oxide layer; d) defining a first pattern on said first photoresist layer; e) transferring said first pattern onto said first silicon oxide layer using dry etching; f) performing, without coating a protective layer onto said first pattern, at least one additional processing step that does not perturb said transferred first pattern while said silicon substrate under said first pattern is protected by said first silicon oxide layer; and g) dry etching, after the step of performing said at least one additional processing step, said first pattern into said silicon substrate such that the planar dimensions of said first pattern are reproduced in said silicon substrate.