Patent ID: 8492901

Claim:
A structure, comprising: a wafer having a top wafer surface, said wafer defining an opening, said top wafer surface defining a first reference direction perpendicular to said top wafer surface, said wafer having a thickness in said first reference direction; and a through-wafer via formed in said opening, said through-wafer via having a shape, when viewed in a plane perpendicular to said first reference direction and parallel to said top wafer surface, of at least one of a spiral and a C-shape, said through-wafer via having a height in said first reference direction essentially equal to said thickness of said wafer in said first reference direction, wherein said through-wafer via has a width when viewed in said plane perpendicular to said first reference direction and parallel to said top wafer surface, a length when viewed in said plane perpendicular to said first reference direction and parallel to said top wafer surface, a first aspect ratio of at least ten to one and a second aspect ratio of at least ten to one, said first aspect ratio comprising a ratio of said height of said through-wafer via in said first reference direction to said width, said second aspect ratio comprising a ratio of said length of said through-wafer via to said width.