Patent ID: 6258633
Filing Date: 2001-07-10
Classification: H01L

Abstract:
A method for producing an interconnect from a first metal trace, through a dielectric, to a second metal trace, comprising the steps of heating a portion of the first metal trace to cause thermal expansion thereof and at least partial melting of metal constituting the portion of the first metal trace and heating a portion of the second metal trace to cause thermal expansion thereof and at least partial melting of metal constituting the portion of the second metal trace such that the thermal expansion of the portions causes at least one crack in the dielectric to be formed between the portion of the first metal trace and the portion of the second metal trace and such that the melting of the metals of the portions of the first metal trace and the second metal trace causes the metals to fuse together through the crack, thereby producing the interconnect from the first metal trace to the second metal trace, andthe first metal trace comprising, in part, a substantially square donut shape configuration defining four interior edge portions with the portion of the first metal trace comprising the four interior edge portions.