Patent ID: 7033880
Filing Date: 2006-04-25
Classification: H01F,H01L

Abstract:
1. A method of making a semiconductor device including inductors comprising; forming a semicircular columnar groove in an insulating layer on a semiconductor substrate; depositing a conductive material layer over the insulating layer having the groove; patterning the conductive material layer to form underlying conductive lines slantly longitudinally with a predetermined distance therebetween on said groove; forming a cylindrical insulating layer in said groove formed with said underlying conductive lines and on the surface of said substrate, wherein an upper portion of said cylindrical insulating layer protrudes from an upper surface of said groove; and forming upper conductive lines on said cylindrical insulating layer slantly longitudinally at an angle opposite the longitudinal slant of the underlying conductive lines with a predetermined distance between upper conductive lines to contact with said underlying conductive lines, wherein said upper conductive lines extend up and around said upper portion of said cylindrical insulating layer to form a rounded upper conductive line, the upper conductive lines having a substantially uniform thickness conformally formed on said insulator.