Stress relief structures in package assemblies
First Claim
Patent Images
1. A semiconductor package structure, comprising:
- a substrate;
a solder region;
one or more dies bonded on the substrate through the solder region; and
two or more stress relief structures, each stress relief structure of the stress relief structures being formed on or bonded onto a surface of the substrate and being disposed adjacent to at least one die of the one or more dies, wherein a first stress relief structure of the two or more stress relief structures has a different shape from a second stress relief structure of the two or more stress relief structures,whereinupper surfaces of the stress relief structures are unconnected; and
at least one stress relief structure of the two or more stress relief structures is disposed adjacent to a corner of the at least one die, and the at least one stress relief structure comprises;
a first portion extending along a first side of the at least one die, the first side being associated with the corner of the at least one die; and
a second portion extending along a second side of the at least one die, the second side being associated with the corner of the at least one die,wherein the two or more stress relief structures individually comprise a material selected from the group consisting of a thermally conductive material, metal, tungsten, aluminum, aluminum alloy, polysilicon, silicide, tantalum, refractory metal, copper, copper alloy, gold, gold alloy, TaN, titanium, TiN, nickel, and combinations thereof.
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Accused Products
Abstract
A semiconductor package structure, comprises a substrate, a die region having one or more dies disposed on the substrate, and at least one stress relief structure disposed at one or more corners of the substrate, the at least one stress relief structure being adjacent to at least one die of the one or more dies.
52 Citations
19 Claims
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1. A semiconductor package structure, comprising:
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a substrate; a solder region; one or more dies bonded on the substrate through the solder region; and two or more stress relief structures, each stress relief structure of the stress relief structures being formed on or bonded onto a surface of the substrate and being disposed adjacent to at least one die of the one or more dies, wherein a first stress relief structure of the two or more stress relief structures has a different shape from a second stress relief structure of the two or more stress relief structures, wherein upper surfaces of the stress relief structures are unconnected; and at least one stress relief structure of the two or more stress relief structures is disposed adjacent to a corner of the at least one die, and the at least one stress relief structure comprises; a first portion extending along a first side of the at least one die, the first side being associated with the corner of the at least one die; and a second portion extending along a second side of the at least one die, the second side being associated with the corner of the at least one die, wherein the two or more stress relief structures individually comprise a material selected from the group consisting of a thermally conductive material, metal, tungsten, aluminum, aluminum alloy, polysilicon, silicide, tantalum, refractory metal, copper, copper alloy, gold, gold alloy, TaN, titanium, TiN, nickel, and combinations thereof. - View Dependent Claims (2, 3, 4, 18, 19)
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5. A semiconductor package structure, comprising:
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a substrate; a solder region; a plurality of dies, with at least one die of the plurality of dies being larger than the other dies of the plurality of dies, the plurality of dies being bonded on the substrate through the solder region; an underfill between each die of the plurality of dies and the substrate; and two or more stress relief structures, each stress relief structure of the stress relief structures being formed on or bonded onto a surface of the substrate and being disposed adjacent to the at least one die of the plurality of dies, wherein at least a first stress relief structure of the two or more stress relief structures are spaced from each die of the plurality of dies in a direction parallel to a top surface of the substrate, and a second stress relief structure of the two or more stress relief structures is spaced from the underfill, wherein upper surfaces of the stress relief structures are unconnected; and at least one stress relief structure of the two or more stress relief structures is disposed adjacent to a corner of the at least one die, and the at least one stress relief structure comprises; a first portion extending along a first side of the at least one die, the first side being associated with the corner of the at least one die; and a second portion extending along a second side of the at least one die, the second side being associated with the corner of the at least one die. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. A semiconductor package structure, comprising:
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a substrate; a solder region; one or more dies bonded on the substrate through the solder region; an underfill between each die of the one or more dies and the substrate; and two or more stress relief structures, each stress relief structure of the stress relief structures being formed on or bonded onto a surface of the substrate and being disposed adjacent to at least an identified largest die of the one or more dies, wherein at least a first stress relief structure of the two or more stress relief structures is spaced from each die of the one or more dies in a direction parallel to a top surface of the substrate, and at least a second stress relief structure of the two or more stress relief structures spaced from the underfill, wherein upper surfaces of the stress relief structures are unconnected; and at least one stress relief structure of the two or more stress relief structures is disposed adjacent to a corner of the identified largest die, and the at least one stress relief structure comprises; a first portion extending along a first side of the identified largest die, the first side being associated with the corner of the identified largest die; and a second portion extending along a second side of the identified largest die, the second side being associated with the corner of the identified largest die. - View Dependent Claims (14, 15, 16, 17)
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Specification