Patent ID: 7015131
Filing Date: 2006-03-21
Classification: H01L

Abstract:
1. A method for forming a plurality of bumps on a semiconductor integratod circuit chip used for a semiconductor device comprising a wiring board formed with a plurality of electrodes, a semiconductor integrated circuit chip formed with a plurality of bumps, and a sealing resin for bonding the electrodes and bumps at corresponding positions to adhere said wiring board and semiconductor integrated circuit chip, wherein adjacent bumps are formed under the condition that the interval between adjacent bumps is defined by a following formula D1: where, L denotes the interval between adjacent bumps; ΦA denotes a top diameter of a bump bonded with an electrode; b b each individual bump before bonding with an electrode is formed such that the dimensions ΦΛ and H and the quantity F of each individual bump are in the region defined by a following formula D2; and each individual bump is formed in a near spherical shape so that the top diameter ΦA satisfies the formula D2 after bonding with an electrode, where, ΦA denotes a top diameter of a bump bonded with an electrode; H denotes a height of a bump, defined as the distance from the semiconductor integrated circuit chip to the end of the bump bonded with an electrode; F denotes a linear thermal expansion coefficient of the scaling resin; a a