HEAT DISSIPATION DEVICE AND POWER MODULE
First Claim
1. A heat dissipation device provided on one face side of an insulating substrate, which has a semiconductor element disposed on the other face side thereof, comprising:
- a first planar member that includes an insulating substrate-side joint face joined to the insulating substrate, and a first joint face on the side of the first planar member opposite the insulating substrate-side joint face;
a second planar member that includes a second joint face that faces the first joint face; and
a radiator fin that is corrugated and arranged between the first planar member and the second planar member, wherein a peak portion of the radiator fin is joined to the first joint face, and the radiator fin includes a first region that has a height in an amplitude direction which is equal to a distance between the first planar member and the second planar member and includes a joint peak portion joined to the second joint face and a second region that has a height in the amplitude direction which is shorter than the distance between the first planar member and the second planar member and includes a non-joint peak portion separated from the second joint face by a gap.
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Accused Products
Abstract
A radiator having a radiator fin sandwiched between and joined to a top plate and a bottom plate is provided on an insulating substrate, which has a semiconductor element arranged on one face side thereof, on the other face side thereof. The radiator fin is a corrugated fin that includes a first region that includes a joint peak portion joined to the bottom plate and has a height in an amplitude direction which is substantially equal to a distance between the top plate and the bottom plate, and a second region that includes a non-joint peak portion separated from the bottom plate by a predetermined gap and has a height in the amplitude direction which is smaller than the distance between the top plate and the bottom plate.
17 Citations
12 Claims
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1. A heat dissipation device provided on one face side of an insulating substrate, which has a semiconductor element disposed on the other face side thereof, comprising:
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a first planar member that includes an insulating substrate-side joint face joined to the insulating substrate, and a first joint face on the side of the first planar member opposite the insulating substrate-side joint face; a second planar member that includes a second joint face that faces the first joint face; and a radiator fin that is corrugated and arranged between the first planar member and the second planar member, wherein a peak portion of the radiator fin is joined to the first joint face, and the radiator fin includes a first region that has a height in an amplitude direction which is equal to a distance between the first planar member and the second planar member and includes a joint peak portion joined to the second joint face and a second region that has a height in the amplitude direction which is shorter than the distance between the first planar member and the second planar member and includes a non-joint peak portion separated from the second joint face by a gap. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A power module comprising:
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an insulating substrate; a semiconductor element provided on one face of the insulating substrate; a first planar member arranged on an opposite face side of the insulating substrate from the semiconductor element that includes an insulating substrate-side joint face joined to the insulating substrate, and a first joint face on the side of the first planar member opposite the insulating substrate-side joint face; a second planar member that includes a second joint face that faces the first joint face; and a radiator fin that is corrugated and arranged between the first planar member and the second planar member, wherein a peak portion of the radiator fin is joined to the first joint face, and the radiator fin includes a first region that has a height in an amplitude direction which is equal to a distance between the first planar member and the second planar member and includes a joint peak portion joined to the second joint face and a second region that has a height in the amplitude direction which is shorter than the distance between the first planar member and the second planar member and includes a non-joint peak portion separated from the second joint face by a gap. - View Dependent Claims (9, 10, 11, 12)
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Specification