Lead frame structure with aperture or groove for flip chip in a leaded molded package
First Claim
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1. A semiconductor die package comprising:
- (a) a semiconductor die including a first surface and a second surface;
(b) a leadframe structure comprising a die attach region and a plurality of leads extending away from the die attach region, wherein the die attach region includes one or more apertures extending through the die attach region and being oriented generally perpendicular to the orientations of the leads in the plurality of leads, and wherein the semiconductor die is mounted on the die attach region of the leadframe structure;
(c) a plurality of solder joints coupling the semiconductor die to the leadframe structure, wherein an aperture in the one or more apertures is between adjacent solder joints; and
(c) a molding material that is around at least portions of the die attach region of the leadframe structure and the semiconductor die, and wherein the molding material is also with the one or more apertures in the die attach region of the lead frame structure.
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Abstract
A semiconductor die package is disclosed. In one embodiment, the die package includes a semiconductor die including a first surface and a second surface, and a leadframe structure having a die attach region and a plurality of leads extending away from the die attach region. The die attach region includes one or more apertures. A molding material is around at least portions of the die attach region of the leadframe structure and the semiconductor die. The molding material is also within the one or more apertures.
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Citations
29 Claims
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1. A semiconductor die package comprising:
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(a) a semiconductor die including a first surface and a second surface;
(b) a leadframe structure comprising a die attach region and a plurality of leads extending away from the die attach region, wherein the die attach region includes one or more apertures extending through the die attach region and being oriented generally perpendicular to the orientations of the leads in the plurality of leads, and wherein the semiconductor die is mounted on the die attach region of the leadframe structure;
(c) a plurality of solder joints coupling the semiconductor die to the leadframe structure, wherein an aperture in the one or more apertures is between adjacent solder joints; and
(c) a molding material that is around at least portions of the die attach region of the leadframe structure and the semiconductor die, and wherein the molding material is also with the one or more apertures in the die attach region of the lead frame structure. - View Dependent Claims (9, 24, 25, 28)
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2-8. -8. (canceled)
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10-20. -20. (canceled)
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21. A semiconductor die package comprising:
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(a) a semiconductor die including a first surface and a second surface;
(b) a leadframe structure comprising a die attach region and a plurality of leads extending away from the die attach region, wherein the due attach region includes one or more grooves in the die attach region, and wherein the semiconductor die is mounted on the die attach region of the leadframe structure using solder that is disposed in the one ore more grooves; and
(c) a molding material that is around at least portions of the die attach region of the leadframe structure and the semiconductor die wherein the die attach region comprises at least one aperture extending through the die attach region. - View Dependent Claims (22, 23, 26, 27, 29)
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Specification