Patent ID: 6608382
Filing Date: 2003-08-19
Classification: H01L,H05K

Abstract:
A plurality of metal bumps for connecting a nonconducting substrate with a plurality of bonding pads and a chip with a plurality of metal pads corresponding in position to the bonding pads, the plurality of metal bumps being respectively disposed between the metal pads and the bonding pads and comprising:at least a first metal bump having at least one curved face and formed on a first metal pad of the chip; at least a second metal bump having at least one curved face and formed on a second metal pad of the chip; and at least a third metal bump having at least a first curved face and a second curved face and formed on a third metal pad of the chip; wherein the three centers of the first metal bump, the second metal bump and the third metal bump are arranged as a triangle, the first curved face of the third metal bump is adjacent to the curved face of the first metal bump, and the second curved face of the third metal bump is adjacent to the curved face of the second metal bump and the first bump, the second bump and the third bump are free from electrical connection to each other.