Patent ID: 7851244
Filing Date: 2010-12-14
Classification: B81B,B81C,Y10S

Abstract:
1. A method for forming metal layers for a MEMS device integrated circuit comprising: removing a first region of photoresist that is coating a wafer and is exposed to a radiation source; etching a substrate of the wafer to a first depth equal to a height of at least one bump feature; removing a second region of the photoresist that is coating the wafer and is exposed to the radiation source, wherein the photoresist removed in the second region is portions of the photoresist remaining after removal of the first region of the photoresist; depositing a metal onto the wafer, wherein the metal attaches to the substrate exposed by the removal of the first and second regions of the photoresist and to the photoresist remaining after the removal of the first and second regions of the photoresist; and lifting off the remaining photoresist covered with the deposited metal.