Patent ID: 8476096

Claim:
A method for producing a micro electro-mechanical device package, comprising: providing a substrate having a freestanding micro electro-mechanical structure thereon; forming a thermally decomposable photodefinable sacrificial layer on said substrate, said sacrificial layer encapsulating a portion of said free-standing micro electro-mechanical structure; image-wise exposing said thermally decomposable photodefinable sacrificial layer where said layer is patterned; forming a contiguous overcoat layer around said patterned layer; and thermally decomposing said patterned layer such that decomposed molecules thereof permeate through the contiguous overcoat layer by dissolving into said contiguous overcoat layer, diffusing through said contiguous overcoat layer and evaporating out of said contiguous overcoat layer thus forming a gas cavity, said contiguous overcoat layer providing an enclosure around said freestanding micro electro-mechanical structure to form a micro electro-mechanical device package.