Patent ID: 8378501
Filing Date: 2013-02-19
Classification: H01L

Abstract:
1. A semiconductor package comprising: a tabular semiconductor die including an electronic circuit provided thereon; a plurality of bonding pads arranged on a mounting surface of the die; and under-bump metals provided on surfaces of respective bonding pads of the plurality of bonding pads and extending perpendicular or substantially perpendicular to the surfaces of the respective bonding pads; wherein each of the under-bump metals includes a neck and a head; the neck is connected to a respective one of the plurality of bonding pads; the head is provided at an end of the neck opposite to the respective one of the plurality of bonding pads; a diameter of the neck is less than a diameter of the head; and the diameter of the neck of the under-bump metals provided on bonding pads of the plurality of bonding pads disposed at corners of the die is less than the diameter of the neck of the under-bump metal provided on a bonding pad of the plurality of bonding pads disposed substantially at a center of the die.