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US 6,022,758 AGranted
Process for manufacturing solder leads on a semiconductor device package
AssigneeShellcase Ltd.
InventorPierre Badehi
Life of this patent
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Abstract
A process of forming a packaged integrated circuit by aperturing a discrete packaging layer attached on a silicon substrate. A plurality of solder leads are formed on the layer. Electrical connections are formed from the leads to pads on the substrate.
Claims4
A method of forming a packaged integrated circuit comprising:
- providing a silicon substrate;
- forming at least one metal layer onto said silicon substrate including a plurality of pads;
- providing a discrete packaging layer;
- aperturing the discrete packaging layer to provide an apertured discrete packaging layer having apertures located in locations corresponding to locations of said plurality of pads;
- attaching said apertured discrete packaging layer over said at least one metal layer so that said apertures communicate with said pads;
- forming a plurality of solder leads on an exterior surface of said at least one packaging layer;
- and
- forming electrical connections directly from individual ones of said plurality of pads to individual ones of said solder leads.
5 more elements
Dependencies are inferred from the claim text.