Method of Manufacturing Molded Semiconductor Packages Having an Optical Inspection Feature
First Claim
1. A method of manufacturing molded semiconductor packages, the method comprising:
- providing a molded semiconductor substrate comprising a mold compound in which semiconductor dies and metal pads are embedded, each metal pad being electrically connected to one of the semiconductor dies and uncovered by the mold compound at a first main surface of the mold compound;
singulating the molded semiconductor substrate into individual molded packages each of which comprises one or more of the semiconductor dies and the corresponding metal pads, each metal pad having a bottom face uncovered by the mold compound at the first main surface, the metal pads disposed around a periphery of each molded package also having a side face uncovered by the mold compound at an edge along which the molded packages were singulated;
immersing the molded packages in a chemical bath which roughens the bottom face of each metal pad and removes burrs from the side face of the metal pads disposed around the periphery of each molded package; and
plating the faces of the metal pads uncovered by the mold compound after immersing the molded packages in the chemical bath.
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Accused Products
Abstract
A molded semiconductor package includes a mold compound having opposing first and second main surfaces and an edge extending between the first and second main surfaces. A semiconductor die is embedded in the mold compound. A plurality of metal pads are also embedded in the mold compound and electrically connected to the semiconductor die. The metal pads have a bottom face which is uncovered by the mold compound at the second main surface of the mold compound. The metal pads disposed around a periphery of the molded package have a side face which is uncovered by the mold compound at the edge of the mold compound. The faces of the metal pads uncovered by the mold compound are plated. The side face of each metal pad disposed around the periphery of the molded package is recessed inward from the edge of the mold compound. A corresponding manufacturing method is also described.
17 Citations
21 Claims
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1. A method of manufacturing molded semiconductor packages, the method comprising:
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providing a molded semiconductor substrate comprising a mold compound in which semiconductor dies and metal pads are embedded, each metal pad being electrically connected to one of the semiconductor dies and uncovered by the mold compound at a first main surface of the mold compound; singulating the molded semiconductor substrate into individual molded packages each of which comprises one or more of the semiconductor dies and the corresponding metal pads, each metal pad having a bottom face uncovered by the mold compound at the first main surface, the metal pads disposed around a periphery of each molded package also having a side face uncovered by the mold compound at an edge along which the molded packages were singulated; immersing the molded packages in a chemical bath which roughens the bottom face of each metal pad and removes burrs from the side face of the metal pads disposed around the periphery of each molded package; and plating the faces of the metal pads uncovered by the mold compound after immersing the molded packages in the chemical bath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 21)
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13-20. -20. (canceled)
Specification