Self aligned ring electrodes

Semiconductor device manufacturing: process – Forming bipolar transistor by formation or alteration of... – Including isolation structure

Reexamination Certificate

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Details

C438S680000, C438S689000, C257SE45001

Reexamination Certificate

active

07981755

ABSTRACT:
The present invention in one embodiment provides a method of manufacturing an electrode that includes providing at least one metal stud positioned in a via extending into a first dielectric layer, wherein an electrically conductive liner is positioned between at least a sidewall of the via and the at least one metal stud; recessing an upper surface of the at least one metal stud below an upper surface of the first dielectric layer to provide at least one recessed metal stud; and forming a second dielectric atop the at least one recessed metal stud, wherein an upper surface of the electrically conductive liner is exposed.

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