Patent ID: 7393784
Filing Date: 2008-07-01
Classification: B81C

Abstract:
1. A method of manufacturing a suspension structure comprising: providing a substrate; forming a hole on the substrate; forming a first patterned photoresist layer on the substrate and the first patterned photoresist layer filling the hole; heating the first patterned photoresist layer to harden it as a sacrificial layer; forming a second patterned photoresist layer on the substrate and the sacrificial layer, the second patterned photoresist layer exposing a part of the substrate and the sacrificial layer; forming a structure layer on the substrate, the second patterned photoresist layer, and the sacrificial layer; performing a lift off process to remove the second patterned photoresist layer and the structure layer above the second patterned photoresist layer; and performing a dry etching process to remove the sacrificial layer in order to make the structure layer on the substrate and the sacrificial layer become the suspension structure and the hole on the substrate become a chamber.