Patent ID: 7284324
Filing Date: 2007-10-23
Classification: G01R,H01F,H01L,Y10T

Abstract:
1. A method for forming an out-of-plane coil structure, comprising: depositing a layer of an elastic material on a substrate, the elastic material having an intrinsic stress profile; photolithographically patterning the layer of elastic material into an elastic member; and depositing a load layer along a portion of a surface of the elastic member; under-cut etching a portion of the substrate under the elastic member to release a free portion of the elastic member from the substrate, an anchor portion of the elastic member remaining fixed to the substrate; wherein on release of the free portion, the load member causes the free end to contact at a point on the substrate which is offset tangentially from the anchor point; and wherein the intrinsic stress profile in the elastic member biases the free portion of the coil structure away from the substrate, forming a loop winding and causing a free end to contact a point on the substrate; connecting the free end to the substrate.