Invention Grant
US07172911B2 Deflectable microstructure and method of manufacturing the same through bonding of wafers 有权
可偏转的微结构及其制造方法通过晶片的结合

Deflectable microstructure and method of manufacturing the same through bonding of wafers
Abstract:
A method of making a deflectable, free hanging micro structure having at least one hinge member, the method includes the steps of providing a first sacrificial wafer having a single crystalline material constituting material forming the micro structure. A second semiconductor wafer including necessary components for forming the structure in cooperation with the first wafer is provided. Finite areas of a structured bonding material is provided, on one or both of the wafers at selected locations, the finite areas defining points of connection for joining the wafers. The wafers are bonded using heat and optionally pressure. Sacrificial material is etched away from the sacrificial wafer, patterning the top wafer by lithography is performed to define the desired deflectable microstructures having hinges, and subsequently silicon etch to make the structures.
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