Microelectronic element having trace formed after bond layer
First Claim
Patent Images
1. An article, comprising:
- an element having a face;
a structure overlying said face, said structure including a first metal layer and a wettable metal layer overlying said first metal layer; and
a conductive trace overlying and contacting at least one of said first metal layer and said wettable metal layer, said trace having a composition different from at least one of said first metal layer and said wettable metal layer.
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Abstract
An article is provided which includes a structure overlying a face of an element. The structure includes a first metal layer and a wettable metal layer overlying the first metal layer. A conductive trace overlies and contacts at least one of the first metal layer and the wettable metal layer, the trace having a composition different from at least one of the first metal layer and the wettable metal layer.
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Citations
40 Claims
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1. An article, comprising:
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an element having a face;
a structure overlying said face, said structure including a first metal layer and a wettable metal layer overlying said first metal layer; and
a conductive trace overlying and contacting at least one of said first metal layer and said wettable metal layer, said trace having a composition different from at least one of said first metal layer and said wettable metal layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of fabricating an article, comprising:
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forming a structure including a wettable metal layer overlying a face of an element; and
thereafter forming a conductive trace in contact with said structure. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification