Patent ID: 7796315

Claim:
A MEMS (micro-electro-mechanical system) device, comprising: a nonconductive support wafer; a device wafer having a surface bonded to a surface of the support wafer, the device wafer comprising: a first half proximate to the nonconductive support wafer, the first half comprising: a plurality of first spring pads; a first plurality of stationary comb teeth extending from a first support pad; and a second plurality of stationary comb teeth extending from a second support pad; a second half distant to the nonconductive support wafer, the second half comprising: a mirror; first and second beam structures, each connected at a respective proximal end to the mirror and extending to a respective distal end spaced from the mirror; a plurality of second spring pads coinciding with the plurality of first spring pads; a plurality of springs coupling the first and the second beam structures to the second spring pads so the mirror can rotate about an axis; a third plurality of stationary comb teeth extending from a first stationary pad, the first stationary pad being located on a first side of the axis; a fourth plurality of stationary comb teeth extending from a second stationary pad, the second stationary pad being located on a second side of the axis; and first, second, third, and fourth pluralities of rotating comb teeth extending from edges of the first and the second beam structures, wherein the first, the second, the third, and the fourth pluralities of rotating comb teeth are interdigitated with the first, the second, the third, and the fourth pluralities of stationary comb teeth, respectively.