Patent ID: 9571008
Date: 2017-02-14
CPC Classifications: B81B,B81C,G01P,H01H,H01L,H02N

Claim:
1. A method of forming a structure for restricting out-of-plane travel, the method comprising: providing a first wafer comprising a bond layer of a particular thickness on a surface of a first substrate material; removing the bond layer in a first area to expose the surface of the first substrate material; applying a mask to at least a portion of a remaining bond layer and a portion of the exposed surface of the first substrate material in the first area to form a second area exposed on the surface of the first substrate material; etching the second area to form a cavity in the first substrate material and the bond layer; and forming by the etching, in the cavity, the structure for restricting out-of-plane travel, wherein the structure has a particular height from a bottom of the cavity determined by the particular thickness of the bond layer.