Patent ID: 8822254

Claim:
A method of manufacturing a MEMS device, comprising: forming a sacrificial layer arrangement over a substrate; forming a structural layer over the sacrificial layer arrangement; patterning the structural layer to define at least one opening and partially etching the sacrificial layer arrangement at a base of the opening; forming a spacer layer at least partially over the structural layer, over a side wall of the at least one opening and over the partially etched sacrificial layer arrangement at the base of the opening, which side wall portion extends below the level of the structural layer; removing a portion of the spacer layer so that a part of the spacer layer remains on the side wall, to define at least one anti-stiction projection that corresponds to the part of the side wall that is covered by the spacer layer, wherein a contact area of the anti-stiction projection is at least partially defined by a thickness of the part of the spacer layer that remains, wherein the thickness is based upon the step of removing; and at least partially removing the sacrificial layer arrangement to form a suspended movable MEMS element.