Patent ID: 7723204
Filing Date: 2010-05-25
Classification: H01L

Abstract:
1. A method for constructing a microelectronic assembly comprising: forming a trench in a semiconductor substrate, the trench having first and second opposing inner walls and a floor and a first width; forming an insulating layer within the trench, the insulating layer having first and second portions over the first and second opposing inner walls of the trench respectively and a third portion over the floor of the trench; forming first and second conductive plates within the trench, the formation of the first and second conductive plates comprising forming an insulating body within the trench in the gap between the first and second portions of the conductive layer, the insulating body being adjacent to the first and second portions of the conductive layer, forming first and second semiconductor devices in the semiconductor substrate on opposing sides of the trench; and forming a second trench in the semiconductor substrate, the second trench having first and second opposing inner walls and a floor and a second width that is less than the first width.