Patent ID: 7902666

Claim:
A semiconductor device having MPS-C2 (Metal Post Solder-Chip Connection) structure, comprising: a substrate having a plurality of first connecting pads and a plurality of accessory pads, wherein the first connecting pads are disposed along a first straight line to have a first pad width and a first pad pitch parallel to the first straight line, wherein the first pad pitch is greater than the first pad width; a chip having a plurality of first metal posts and a plurality of accessory bumps both extruded from a same surface of the chip; a plurality of first soldering materials soldering the first metal posts to the first connecting pads; and a plurality of accessory soldering materials soldering the accessory bumps to the accessory pads; wherein the accessory bumps have a plurality of soldered flat tops in dimensions corresponding to the soldered areas of the accessory pads, wherein each soldered flat top has a plurality of angular corners and an edge between two adjacent angular corners where the length of the edge is twice greater than the first pad pitch.