Patent ID: 6436814
Filing Date: 2002-08-20
Classification: H01L

Abstract:
A method of forming an interconnection structure, the method comprising the steps of:depositing and patterning a first insulator to form an aperture opening to a substrate; depositing a first conductor and polishing the first conductor, thereby leaving the first conductor in the aperture; depositing a second insulator and patterning the second insulator, the step of patterning the second insulator forming an opening through the second insulator and etching into the first conductor of the aperture, thereby forming a recess in the aperture; depositing at least one second conductor, thereby lining the opening through the second insulator and the recess in the aperture, and thereby forming a central region of the interconnection structure; depositing a third insulator, thereby at least partially filling the central region of the interconnection structure; and making an electrical connection to the at least one second conductor.