Patent ID: 7015569

Claim:
A coaxial shield for a semiconductor chip comprising: a top vertical shield wire formed in a top metal layer of a semiconductor chip wherein the top vertical shield wire has a selected length for providing a coaxial shield; a first side shield wire formed in an intermediate metal layer of the semiconductor chip; a first upper via formed in a first dielectric layer of the semiconductor chip that extends lengthwise parallel to the first side shield wire to electrically connect the first side shield wire to the top vertical shield wire along the selected length; a second side shield wire formed opposite the first side shield wire in the intermediate metal layer of the semiconductor chip having a length corresponding to the selected length wherein the second side shield wire extends lengthwise parallel to the first side shield wire; and a second upper via formed in the first dielectric layer that extends lengthwise parallel to the second side shield wire to electrically connect the second side shield wire to the top vertical shield wire along the length corresponding to the selected length.