Patent ID: 8421082

Claim:
A method for fabricated a monolithic integrated CMOS and MEMS device, the method comprising: providing a first semiconductor substrate having a first surface region; forming one or more CMOS integrated circuit devices provided on a CMOS integrated circuit device region overlying the first surface region, the CMOS integrated circuit device region having a CMOS surface region; forming a dielectric layer overlying the CMOS surface region; joining a second semiconductor substrate having a second surface region to the CMOS surface region by bonding the second surface region to the dielectric layer, the second semiconductor being patterned such that one or more portions of the second semiconductor substrate within a vicinity of the one or more CMOS integrated devices are removed to form one or more first air dielectric regions; thinning the first substrate to a desired thickness while maintaining attachment to the CMOS integrated device region; and forming one or more free standing MEMS structures overlying one or more portions of the desired thickness of the first semiconductor substrate.