Patent ID: 7378297
Filing Date: 2008-05-27
Classification: H01L,H05K,Y02P

Abstract:
1. A method for bonding elements, the method comprising: producing on a main surface of a first element a first solder ball; producing on a main surface of a second element a second solder ball; providing contact between the first solder ball and the second solder ball; bonding the first element and the second element by applying a reflow act whereby the solder balls melt and form a joined solder ball structure; wherein prior to the bonding, the first solder ball is laterally embedded in a first layer of non-conductive material, such that the upper part of the first solder ball is not covered by the non-conductive material; and prior to the bonding, the second solder ball is laterally embedded in a second layer of non-conductive material, such that the upper part of the second solder ball is not covered by the non-conductive material, further comprising applying a third solder volume on one or both of the embedded first or second solder balls, prior to the bonding.