Patent ID: 6690187
Filing Date: 2004-02-10
Classification: G01R

Abstract:
Apparatus for testing a leakage protection reliability of an integrated circuit interconnection, comprising:at least one comb-like pattern comprising one straight length portion, and a plurality of tooth portions; one serpentine-like pattern comprising a plurality of unit parts and at least one connection part; and means of applying a defined bias voltage between the comb-like pattern and the serpentine-like pattern to generate a potential difference between the two patterns, wherein the plurality of tooth portions protrude from the length portion, substantially parallel with one another and having substantially the same lengths, wherein each of the unit parts comprises: two tooth parallel parts laterally spaced apart from the neighboring tooth portions by a certain distance, and extending substantially parallel therewith; a length parallel part formed at a level different from the level of the comb-like pattern and connecting the ends of the two tooth parallel parts and forming turning points with the tooth parallel parts; and two vias connecting the ends of the two tooth parallel parts with the both ends of the length parallel part through an interlayer dielectric layer and spaced apart from the end of the neighboring tooth portion by a minimum design length according to a design rule, and wherein the connection part connects the ends of the neighboring two tooth parallel parts for connecting the two unit parts.