Patent ID: 7687843
Filing Date: 2010-03-30
Classification: H01L

Abstract:
1. A capacitor structure, comprising: a trench formed in a semiconductor material extending from an upper surface of the semiconductor material into the semiconductor material; a first columnar arrangement of conductive islands arranged in the trench one above the other adjacent an inner wall of the trench; a second columnar arrangement of conductive islands arranged in the trench one above the other adjacent a different inner wall of the trench; an insulation coating interposed between the inner walls of the trench and the conductive islands; and at least one insulating material interposed between adjacent ones of the conductive islands of the same columnar arrangement and between the different columnar arrangements so that each conductive island is conductively isolated and physically separated from the other conductive islands in the same columnar arrangement and from the conductive islands in the other columnar arrangement, wherein each of the conductive islands is positioned entirely within the trench below the upper surface of the semiconductor material.