Patent ID: 9589879
Date: 2017-03-07
CPC Classifications: H01L,H05K

Claim:
1. A structure comprising: (1) a substrate having a first side and a second side opposite to the first side, the substrate comprising a first material; (2) a through via passing through the first material of the substrate between the first and second sides, the through via having a first segment and a second segment joining the first segment inside the substrate, the first segment extending from the first side to the second segment, the second segment extending from the first segment to the second side, the first segment having an end adjacent to the second segment, the second segment having an end adjacent to the first segment; wherein when viewed from the first side, said end of the first segment completely laterally surrounds said end of the second segment but is laterally spaced from said end of the second segment; (3) a conductive feature passing through the through via and forming at least a part of a conductive path provided for connection to a circuit element of an integrated circuit, the conductive feature comprising: a first conductive section present in the first segment; a second conductive section present in the second segment and extending into the first segment, wherein when viewed from the first side, a portion of the second conductive section in the first segment spreads laterally beyond said end of the second segment; and a first conductive layer separating the first conductive section from the second conductive section and present in the first segment but not in the second segment, the first conductive layer being a material not present in the first segment in the first and second conductive sections.