Stacked semiconductor packages and related methods
First Claim
Patent Images
1. A semiconductor device package, comprising:
- a substrate having an upper surface;
a plurality of pads disposed on the substrate upper surface;
a die electrically connected to the substrate;
a solder mask layer disposed on the substrate upper surface and having a plurality of first openings exposing the pads;
an insulation layer disposed on the solder mask layer and including a plurality of second openings, positions of the second openings corresponding to positions of the first openings; and
a plurality of conductive pillars disposed on at least a subset of the pads, wherein at least a portion of the conductive pillars protrudes from the solder mask layer;
wherein a cross-sectional area of each of the first openings is substantially the same as a cross-sectional area of each of the second openings.
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Abstract
The present stacked semiconductor packages include a bottom package and a top package. The bottom package includes a substrate, a solder mask layer, a plurality of conductive pillars and a die electrically connected to the substrate. The solder mask layer has a plurality of openings exposing a plurality of pads on the substrate. The conductive pillars are disposed on at least a portion of the pads, and protrude from the solder mask layer.
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Citations
20 Claims
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1. A semiconductor device package, comprising:
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a substrate having an upper surface; a plurality of pads disposed on the substrate upper surface; a die electrically connected to the substrate; a solder mask layer disposed on the substrate upper surface and having a plurality of first openings exposing the pads; an insulation layer disposed on the solder mask layer and including a plurality of second openings, positions of the second openings corresponding to positions of the first openings; and a plurality of conductive pillars disposed on at least a subset of the pads, wherein at least a portion of the conductive pillars protrudes from the solder mask layer; wherein a cross-sectional area of each of the first openings is substantially the same as a cross-sectional area of each of the second openings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A semiconductor device package, comprising:
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a substrate having an upper surface; a plurality of pads disposed on the substrate upper surface; a die electrically connected to the substrate; a solder mask layer disposed on the substrate upper surface and having a plurality of first openings exposing the pads; an insulation layer disposed on the solder mask layer and including a plurality of second openings, positions of the second openings corresponding to positions of the first openings; and a plurality of conductive pillars disposed on at least a subset of the pads, wherein the conductive pillars have a lesser width than the pads, such that the solder mask layer covers outer edges of upper surfaces of the pads, and further wherein each of the conductive pillars of at least a subset of the conductive pillars has a uniform width along its length. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A semiconductor device package, comprising:
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a substrate having an upper surface; a plurality of pads disposed on the substrate upper surface; a die electrically connected to the substrate; a first solder mask layer disposed on the substrate upper surface and having a plurality of first openings exposing the pads; a second solder mask layer disposed on the first solder mask layer and including a plurality of second openings, positions of the second openings corresponding to positions of the first openings; and a plurality of conductive pillars disposed on at least a subset of the pads, wherein a height of at least a portion of the conductive pillars is greater than a height of the solder mask layer; wherein a diameter of each of the first openings is substantially the same as a diameter of each of the second openings. - View Dependent Claims (18, 19, 20)
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Specification