Assembly having stacked die mounted on substrate
First Claim
1. A semiconductor die assembly, comprising:
- a die stack comprising a first die mounted on a substrate and at least one additional die stacked over said first die mounted on said substrate, said first die and each said additional die having a plurality of peripheral electrical connection sites arrayed in a row near and generally parallel to a peripheral edge of said die, at least one die selected from said first die and said at least one additional die being a memory die, and dielectric spacers maintaining a fixed spacing between the at least one additional die and the first die, and a conducting element electrically connected to at least one of said peripheral electrical connection sites on at least one of said die and extending from said at least one peripheral electrical connection site toward said peripheral die edge on said at least one of said die; and
the substrate having an electrical connection land at a die mount side thereof, whereinsaid at least one of said peripheral electrical connection sites is electrically connected to said electrical connection land on said substrate by an electrically conductive polymer element applied to a side of said die stack adjacent said peripheral die edge, said electrically conductive polymer element contacting said conducting element and being electrically connected to said land.
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Accused Products
Abstract
Metal rerouting interconnects at one or more sides of a die or multiple die segments can form edge bonding pads for electrical connection. Insulation can be applied to surfaces of the die or multiple die segments after optional thinning and singulation, and openings can be made in the insulation to the electrical connection pads. After being placed atop one another in a stack, vertically adjacent die or die segments can be electrically interconnected using a flexible bond wire or bond ribbon attached to an electrical connection pad exposed within such opening, the bond wire or ribbon protruding horizontally, and an electrically conductive polymer, or epoxy, filaments or lines can be applied to the stack.
197 Citations
19 Claims
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1. A semiconductor die assembly, comprising:
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a die stack comprising a first die mounted on a substrate and at least one additional die stacked over said first die mounted on said substrate, said first die and each said additional die having a plurality of peripheral electrical connection sites arrayed in a row near and generally parallel to a peripheral edge of said die, at least one die selected from said first die and said at least one additional die being a memory die, and dielectric spacers maintaining a fixed spacing between the at least one additional die and the first die, and a conducting element electrically connected to at least one of said peripheral electrical connection sites on at least one of said die and extending from said at least one peripheral electrical connection site toward said peripheral die edge on said at least one of said die; and the substrate having an electrical connection land at a die mount side thereof, wherein said at least one of said peripheral electrical connection sites is electrically connected to said electrical connection land on said substrate by an electrically conductive polymer element applied to a side of said die stack adjacent said peripheral die edge, said electrically conductive polymer element contacting said conducting element and being electrically connected to said land. - View Dependent Claims (2, 3, 4, 5)
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6. A semiconductor die assembly, comprising:
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a die stack comprising a first die mounted on a substrate and at least one additional die stacked over said first die mounted on said substrate, said first die and each said additional die having a plurality of peripheral electrical connection sites arrayed in a row near and generally parallel to a peripheral edge of said die, and a conducting element electrically connected to at least one of said peripheral electrical connection sites on at least one of said die and extending from said at least one peripheral electrical connection site toward said peripheral die edge on said at least one of said die;
the substrate having an electrical connection land at a die mount side thereof, whereinsaid at least one of said peripheral electrical connection sites is electrically connected to said electrical connection land on said substrate by an electrically conductive polymer element applied to a side of said die stack adjacent said peripheral die edge, said electrically conductive polymer element contacting said conducting element and being electrically connected to said land; and a heatsink covering the die stack. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification