Patent ID: 6897476

Claim:
A test structure for determining electromigration and interlayer dielectric failure said test structure comprising: a first metal line situated in a metal layer of said test structure; a second metal line situated adjacent and substantially parallel to said first metal line, said second metal line being separated from said first metal line by a first distance, said first distance being substantially equal to a minimum design rule separation distance; a metal band surrounding said first metal line and said second metal line, an interlayer dielectric layer situated between said first metal line and said second metal line, said first metal line and said metal band, and said second metal line and said metal band; wherein said electromigration failure is determined when a first resistance of said first metal line or a second resistance of said second metal line is greater than a predetermined resistance, and wherein said interlayer dielectric failure is determined when a first current is detected between said first metal line and said second metal line.