Patent ID: 7829364

Claim:
A method for fabricating a suspension microstructure comprising the steps of: forming an insulation layer including inner micro-electro-mechanical structures on an upper surface of a silicon substrate, the micro-electro-mechanical structure including at least one microstructure and a plurality of metal circuits that are independent from each other, the micro-electro-mechanical structures having an exposed portion on a surface of the insulation layer, the exposed portion being provided with through holes correspondingly to predetermined etching spaces of the micro-electro-mechanical structures, which only penetrates the insulation layer without contacting the micro-electro-mechanical structures; next, forming a photoresist with an opening on the insulation layer, the opening of the photoresist being located outside the through holes of the exposed portion; subsequently, conducting an etching from the through holes of the exposed portion downwards to form etching spaces which only penetrate the insulation layer, the microstructures of the micro-electro-mechanical structures being clad in the insulation layer; and realizing suspension of the microstructures by etching.