Patent ID: 9735090
Date: 2017-08-15
CPC Classifications: H01L

Claim:
1. An integrated circuit device comprising: a semiconductor structure; a through-silicon-via (TSV) structure that extends in a first direction and that penetrates through the semiconductor structure; a connection terminal on the semiconductor structure, the connection terminal including an upper surface that is electrically connected to the TSV structure, a bottom surface that is opposite the upper surface, and a side wall that extends between the bottom surface and the upper surface; a metal capping layer that includes a flat capping portion that covers the bottom surface of the connection terminal, and a wedge-shaped capping portion that is integrally connected to the flat capping portion and that partially covers the side wall of the connection terminal; and a solder structure that surrounds the metal capping layer on the connection terminal, wherein the solder structure extends to cover a portion of the side wall of the connection terminal that is not covered by the wedge-shaped capping portion, while surrounding the wedge-shaped capping portion.