Patent ID: 9466788
Filing Date: 2016-10-11
CPC Classification: H01L

Claim Text:
1. A method of manufacturing a magnetoresistive-based device, comprising: forming a patterned layer of photoresist over an electrically conductive layer; etching, using a first etching chemistry, a first portion of the electrically conductive layer not covered by the patterned layer of photoresist, wherein the first etching chemistry is a selective etching chemistry that favors removal of material in the electrically conductive layer over material in the patterned layer of photoresist; after etching the first portion, etching, using a second etching chemistry, a second portion of the electrically conductive layer not covered by the patterned layer of photoresist, wherein the first etching chemistry is more selective with respect to the electrically conductive layer than the second etching chemistry; and after etching the second portion, stripping the patterned layer of photoresist.