Patent ID: 7534641

Claim:
A method for manufacturing a micro-electro-mechanical (MEM) device, comprising the steps of: providing a first wafer; removing a portion of the first wafer to provide a cavity including a plurality of spaced support pedestals within the cavity; bonding a second wafer to at least a portion of the first wafer, wherein a portion of the second wafer provides a diaphragm over the cavity, and wherein the support pedestals support the diaphragm during processing; etching the second wafer to release the diaphragm from the support pedestals; and etching at least a portion of the diaphragm adjacent a sidewall of the cavity to allow the diaphragm to move and to provide the (MEM) device that is compatible with a complementary metal-oxide semiconductor (CMOS) process wherein the support pedestals are spaced in a regular pattern such that the cavity is provided without creating stress limit at temperature.