Patent ID: 8472142
Filing Date: 2013-06-25
Classification: G11B,H05K

Abstract:
1. A bonded structure for electrical components comprising: a first electrical pad disposed on one of the electrical components; a second electrical pad disposed on the other electrical component; and metal ball for bonding or welding the first and the second electrical pads; wherein the first and the second electrical pads each have an attaching surface attached to the corresponding electrical component and a bonding surface opposite the attaching surface; wherein both the bonding surfaces of the first and the second electrical pads face the same direction, and the metal ball is disposed on both the bonding surfaces to form a metal junction and thereby bond the first and the second electrical pads, wherein the electrical components respectively have a first substrate layer and a second substrate layer laminated on the first substrate layer, the first and the second electrical pads are disposed on the second substrate layers of the respective electrical components and each have an extended portion extending beyond an edge of the second substrate layer and the first substrate layer, and the metal ball is disposed on the extended portions of the first and the second electrical pads, and wherein the extended portions of the first and the second electrical pads are on the same level and aligned with each other.