Patent ID: 8236663

Claim:
A method, comprising: etching at least one partial via in a stacked structure; forming a border about the at least one partial via; and performing thick wiring using selective etching while continuing via etching to at least one etch stop layer; wherein: the at least one partial via comprises a first partial via and a second partial via; the at least one etch stop layer comprises a first etch stop layer and a second etch stop layer; the selective etching forms a first wire trough above the first partial via and extends the first partial via to the first etch stop layer on a metal layer; the selective etching forms a second wire trough above the second partial via and extends the second partial via to the second etch stop layer; the forming the border step comprises: depositing a negative photoresist on the stacked structure after the formation of the at least one partial via; and exposing the negative photoresist remote from the at least one partial via; and the performing step comprises: etching the at least one partial via further into the stacked structure, and selectively etching to form the first and second wire troughs above the first and second partial vias, wherein the selective etching is selective to at least one of the first etch stop layer deposited on the metal layer and the second etch stop layer deposited on a MIM capacitor.