Patent ID: 8704317

Claim:
A microelectromechanical system (MEMS) device comprising: a substrate; an oxide layer formed on the substrate; a cavity etched in the oxide layer, the cavity having opposing sidewall portions; a microstructure device layer bonded to the oxide layer, over the cavity, the microstructure device layer including a substantially solid microstructure MEMS device formed in the microstructure device layer and suspended over a portion of the cavity, wherein the substantially solid microstructure MEMS device extends between the opposing sidewall portions of the cavity such that that no other MEMS device is between the substantially solid microstructure MEMS device and the sidewall portions of the cavity, wherein the substantially solid microstructure MEMS device is without release holes through the substantially solid microstructure MEMS device; a trench extending through the microstructure device layer around an outer boundary dimension of the substantially solid microstructure MEMS device; and an anchor formed in the device layer and configured to support the microstructure device, the anchor having an undercut in the oxide layer, the undercut having a length along the anchor that is less than one-half a length of the outer boundary dimension of the substantially solid microstructure MEMS device.