Patent ID: 8008160
Filing Date: 2011-08-30
Classification: H01L

Abstract:
1. A method of forming a trench device structure having a single-side strap, the method comprising: forming a deep trench in a semiconductor substrate, said deep trench having a first side portion and a second side portion; depositing a node dielectric on said deep trench, wherein said node dielectric covers said first side portion and said second side portion; depositing a first conductive layer over said node dielectric; performing at least one of an ion implantation and ion bombardment at an angle into a portion of said node dielectric, thereby removing said portion of said node dielectric from said first side portion of said deep trench; and depositing a second conductive layer comprising dopants over said first conductive layer, wherein said dopants in said second conductive layer outdiffuses into a portion of said semiconductor substrate.