Device having a bonding structure for two elements

Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – For plural devices

Reexamination Certificate

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Details

C257S738000, C257S777000, C257S780000, C257SE23021, C257SE21598, C361S790000, C361S792000, C361S807000, C438S109000

Reexamination Certificate

active

07737552

ABSTRACT:
A device and a method for bonding elements are described. A first solder ball is produced on a main surface of a first element. A second solder ball is produced on a main surface of a second element. Contact is provided between the first solder ball and the second solder ball. The first and second elements are bonded by applying a reflow act whereby the solder balls melt and form a joined solder ball structure. Prior to the bonding, the first solder ball is laterally embedded in a first layer of non-conductive material and the second solder ball is laterally embedded in a second layer of non-conductive material, such that the upper part of the first solder ball and upper part of the second solder ball are not covered by the non-conductive material. A third solder volume is applied on one or both of the embedded first or second solder balls, prior to the bonding.

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