Microelectronic assemblies having solder-wettable pads and conductive elements
First Claim
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1. A microelectronic assembly comprising:
- a component including one or more conductive pads, each said conductive pad including a plurality of solder-wettable strips extending outwardly away from a center, said solder wettable strips being bounded by non solder-wettable material;
a composite conductive element positioned atop at least one of said conductive pads, said composite conductive element including a solid conductive core and a layer of solder material overlying said solid conductive core, said solid conductive core having a higher melting temperature than said layer of solder material.
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Abstract
A microelectronic assembly includes a component having one or more conductive pads, with each conductive pad having a plurality of solder-wettable strips extending outwardly away from a center, the solder wettable strips being bounded by non solder-wettable material. The microelectronic assembly also includes a composite conductive element positioned atop at least one of the conductive pads, the composite conductive element including a solid conductive core and a layer of solder material overlying the solid conductive core, the solid conductive core having a higher melting temperature than the layer of solder material.
86 Citations
32 Claims
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1. A microelectronic assembly comprising:
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a component including one or more conductive pads, each said conductive pad including a plurality of solder-wettable strips extending outwardly away from a center, said solder wettable strips being bounded by non solder-wettable material;
a composite conductive element positioned atop at least one of said conductive pads, said composite conductive element including a solid conductive core and a layer of solder material overlying said solid conductive core, said solid conductive core having a higher melting temperature than said layer of solder material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 24)
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21. A microelectronic assembly comprising:
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a component including one or more conductive pads on said component, each said conductive pad including a plurality of solder wettable strips extending outwardly away from a center; and
a composite conductive element atop at least one of said conductive pads, said composite conductive element including a solid conductive core and a layer of solder material overlying said solid conductive core, said solid conductive core having a higher melting temperature than said layer of solder material. - View Dependent Claims (22, 23, 25, 26)
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27. A microelectronic assembly comprising:
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a component including a base and one or more pads on said base, each said pad including a plurality of solder-wettable strips extending outwardly away from a center, said solder-wettable strips being bounded by non-solder-wettable material;
providing composite conductive elements atop said one or more conductive pads, each said composite conductive element including a solid conductive core and a layer of solder material overlying said solid conductive core, said solid conductive core having a higher melting temperature than said layer of solder material, wherein said composite conductive elements are heatable to a temperature whereby the layers of solder material are in a molten state for wetting to said conductive pads while said solid cores remains in a solid state. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification