Heat dissipation apparatus and method
First Claim
Patent Images
1. A heat dissipation apparatus comprising:
- a lid;
a base underlying the lid, the lid and the base forming a cavity, the base having an input port, an output port, and further comprising;
a first fin structure having a first sidewall surface area, physically contacting the lid, and located in the cavity and adjacent to the input port; and
a second fin structure having a second sidewall surface area, physically contacting the lid, and located in the cavity and adjacent to the output port, wherein the second sidewall surface area is greater than the first sidewall surface area, and wherein the first and second fin structures are approximately the same height;
a first semiconductor chip overlying the lid and overlying and thermally coupled to the first fin structure;
a second semiconductor chip overlying the lid and overlying and thermally coupled to the second fin structure; and
a guidance fin located in the cavity, wherein the guidance fin is substantially devoid of heat transfer from the first and second semiconductor chips.
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Abstract
A heat dissipation apparatus (51) has a lid (12) and an optimized fin arrangement (16) located in a cavity (57) of a base (11). Semiconductor chips (41, 42, 43, 44, 45, and 46) are coupled to the lid (12), and a heat conducting medium (47) is forced into the cavity (57) through a port (13) and out of the cavity (57) through a different port (14). Heat generated by the semiconductor chips (41, 42, 43, 44, 45, and 46) is thermally conducted into the fin arrangement (16) and then transferred into the heat conducting medium (47).
92 Citations
20 Claims
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1. A heat dissipation apparatus comprising:
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a lid; a base underlying the lid, the lid and the base forming a cavity, the base having an input port, an output port, and further comprising; a first fin structure having a first sidewall surface area, physically contacting the lid, and located in the cavity and adjacent to the input port; and a second fin structure having a second sidewall surface area, physically contacting the lid, and located in the cavity and adjacent to the output port, wherein the second sidewall surface area is greater than the first sidewall surface area, and wherein the first and second fin structures are approximately the same height; a first semiconductor chip overlying the lid and overlying and thermally coupled to the first fin structure; a second semiconductor chip overlying the lid and overlying and thermally coupled to the second fin structure; and a guidance fin located in the cavity, wherein the guidance fin is substantially devoid of heat transfer from the first and second semiconductor chips. - View Dependent Claims (2, 3, 4, 5)
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6. A semiconductor module comprising:
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a lid; a base underlying the lid, the lid and the base forming a cavity, the base having an input port, an output port, and further comprising; a first fin structure having a first sidewall surface area and located in the cavity and adjacent to the input port; and a second fin structure having a second sidewall surface area and located in the cavity and adjacent to the output port, wherein the second sidewall surface area is greater than the first sidewall surface area, and wherein the input port and output port form a first axis; a first semiconductor chip overlying the lid and overlying and thermally coupled to the first fin structure; a second semiconductor chip overlying the lid and overlying and thermally coupled to the second fin structure; and a third fin structure located in the cavity and located adjacent to the first fin structure, the input port located closer to the third fin structure than the first fin structure, the third fin structure having a third sidewall surface area less than the first sidewall surface area, an the first and third fin structures forming a second axis non-parallel to the first axis. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A heat dissipation apparatus comprising:
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a lid; a base underlying the lid, the lid and the base forming a cavity, the base having an input port, an output port, and further comprising; a first fin structure having a first sidewall surface area and located in the cavity and adjacent to the input port; and a second fin structure having a second sidewall surface area and located in the cavity and adjacent to the output port, wherein the second sidewall surface area is greater than the first sidewall surface area, and wherein the first and second fin structures are approximately the same height; a first semiconductor chip overlying the lid and overlying and thermally coupled to the first fin structure; a second semiconductor chip overlying the lid and overlying and thermally coupled to the second fin structure; and a third fin structure located in the cavity and located adjacent to the second fin structure, the output port located closer to the second fin structure than the third fin structure, the third fin structure having a third sidewall surface area greater than the second sidewall surface area and greater than the first sidewall surface area. - View Dependent Claims (14)
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15. A heat dissipation apparatus comprising:
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a lid; and a base coupled to the lid, the base having a cavity and further comprising; a first port; a second port, wherein the cavity couples the first port and the second port; a first fin structure having a first sidewall surface area and located in the cavity and adjacent to the first port; a second fin structure having a second sidewall surface area and located in the cavity and adjacent to the second port, wherein the second sidewall surface area is greater than the first sidewall surface area; a first semiconductor chip thermally coupled to and overlying the first fin structure so that heat from the first semiconductor chip is transferred to the first fin structure; a second semiconductor chip thermally coupled to and overlying the second fin structure so that heat from the second semiconductor chip is transferred to the second fin structure; and a guidance fin located in the cavity, wherein the guidance fin is substantially devoid of heat transfer from the first and second semiconductor chips.
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16. A semiconductor module comprising:
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a first semiconductor chip; a second semiconductor chip; and a heatsink underlying the first and second semiconductor chips, the heatsink having a cavity with a height and coupling a first port and a second port and further comprised of; a first fin structure located in the cavity, located underneath and thermally coupled to the first semiconductor chip, having a first sidewall surface area, having the height of the cavity, and having a first top surface; a second fin structure located in the cavity, located underneath and thermally coupled to the second semiconductor chip, having a second sidewall surface area less than the first sidewall surface area, having the height of the cavity, and having a second top surface, the first and second fin structures having approximately equal heights; and a guidance fin located in the cavity, wherein the guidance fin is substantially devoid of heat transfer from the first and second semiconductor chips. - View Dependent Claims (17, 18, 19, 20)
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Specification