Patent ID: 7617598

Claim:
A method comprising: providing a laminate including a first conductive layer, a second conductive layer and an insulator between the first and second conductive layers; forming a hollow conductive via through the insulator, the conductive via electrically connecting the first and second conductive layers, at least one conductive trace electrically connecting the hollow conductive via to at least one of the fist and second conductive layers, the conductive via coupled along at least a portion of the insulator; and forming a channel in the insulator adjacent to the hollow conductive via and the channel surrounds the via, wherein the channel extends at least part way between the first and second conductive layers, the at least one conductive trace bridges the channel, and the via is isolated from the insulator by the surrounding channel formed adjacent to the hollow conductive via to prevent separation between the hollow conductive via and at least one of the first and second conductive layers, where the insulator is in a swollen condition.