Patent ID: 6168906
Filing Date: 2001-01-02
Classification: B81B,G03F

Abstract:
A method of making a micromachined membrane having both stiff and flexible regions, comprising: depositing a photoresist on a substrate; exposing the photoresist to actinic radiation through a mask to define openings having a first width in the photoresist in the stiff region and openings having a second width greater than the first width in the flexible region; developing the exposed photoresist to create the openings; etching the openings through the developed photoresist to create grooves in the substrate; and coating the substrate including the grooves with a film of material having a thickness greater than one half of said first width and less than half of said second width to form adjacent, contacting rigid corrugations in said stiff region and spaced, compliant corrugations in said flexible region.