A DEVICE COMPRISING AN ANODIC POROUS REGION SURROUNDED BY A TRENCH HAVING AN ELECTRICAL ISOLATION BARRIER, AND CORRESPONDING METHOD

摘要

The present invention relates to an electrical device comprising:a metal barrier layer (102),an anodic porous oxide region (AAO) on the metal barrier layer,a trench (104) around the anodic porous oxide region reaching the metal barrier layer,a liner (107) at least on the wall (106) of the trench on the side of the anodic porous oxide region forming an electrical isolation barrier and having an opening (109) onto the anodic porous oxide region,a hard mask (108) arranged above the trenches and the liner having an opening (109) onto the anodic porous oxide region.;The invention also relates to the corresponding manufacturing method.