Semiconductor device
First Claim
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1. A semiconductor device comprising:
- a first circuit board assembly including a first circuit board on which power semiconductor elements are mounted and a first heat sink, having a first peripheral frame portion, for radiating heat generated by said power semiconductor elements, said first circuit board being fixed on one surface of said first heat sink and within said first peripheral frame portion;
a second circuit board assembly including a second circuit board on which non-power semiconductor elements are mounted and a second heat sink, having a second peripheral frame portion, for radiating heat generated by said non-power semiconductor elements, said second peripheral frame portion of said second circuit board assembly being stacked on said first peripheral frame portion of said first circuit board assembly so as to oppose said first circuit board to said second circuit board;
first electrical connection means formed on said first peripheral frame portion and electrically connected to said first circuit board; and
second electrical connection means formed on said second peripheral frame portion, electrically connected to said second circuit board and electrically connected to said first electrical connection means by stacking said first and second peripheral frame portions on each other.
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Abstract
A plurality of circuit boards are used and frames are attached to the circuit boards to surround the peripheral portions thereof. Since connection terminals electrically connected to the respective circuit boards are attached to the respective frames, a semiconductor device having semiconductor elements mounted at high density can be formed by stacking the first and second frames on each other and setting the respective connection terminals in contact with each other to electrically connect the circuit boards to each other.
119 Citations
14 Claims
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1. A semiconductor device comprising:
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a first circuit board assembly including a first circuit board on which power semiconductor elements are mounted and a first heat sink, having a first peripheral frame portion, for radiating heat generated by said power semiconductor elements, said first circuit board being fixed on one surface of said first heat sink and within said first peripheral frame portion; a second circuit board assembly including a second circuit board on which non-power semiconductor elements are mounted and a second heat sink, having a second peripheral frame portion, for radiating heat generated by said non-power semiconductor elements, said second peripheral frame portion of said second circuit board assembly being stacked on said first peripheral frame portion of said first circuit board assembly so as to oppose said first circuit board to said second circuit board; first electrical connection means formed on said first peripheral frame portion and electrically connected to said first circuit board; and second electrical connection means formed on said second peripheral frame portion, electrically connected to said second circuit board and electrically connected to said first electrical connection means by stacking said first and second peripheral frame portions on each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A semiconductor device comprising:
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a lowermost circuit board assembly including a lowermost circuit board on which power semiconductor elements are mounted and a lowermost heat sink, having a lowermost peripheral frame portion, for radiating heat generated by said power semiconductor elements, said lowermost circuit board being fixed on one surface of said lowermost heat sink and within said lowermost peripheral frame portion; an intermediate circuit board assembly of at least one layer including at least one intermediate circuit board on which non-power semiconductor elements are mounted and at least one intermediate peripheral frame portion to which said at least one intermediate circuit board is attached, said at least one peripheral frame portion of said intermediate circuit board assembly being stacked on said lowermost peripheral frame portion of said lowermost circuit board assembly; an uppermost circuit board assembly including an uppermost circuit board on which power semiconductor elements are mounted and an uppermost heat sink, having an uppermost peripheral frame portion, for radiating heat generated by said power semiconductor elements, said uppermost circuit board being fixed on one surface of said uppermost heat sink and within said uppermost peripheral frame portion, and said uppermost peripheral frame portion of said uppermost circuit board assembly being stacked on said at least one intermediate peripheral frame portion of said intermediate circuit board assembly; first electrical connection means formed on said lowermost peripheral frame portion and electrically connected to said lowermost circuit board; second electrical connection means formed on said intermediate peripheral frame portion, electrically connected to said intermediate circuit board and electrically connected to said first electrical connection means; and third electrical connection means formed on said uppermost peripheral frame portion, electrically connected to said uppermost circuit board and electrically connected to said second electrical connection means. - View Dependent Claims (11, 12, 13, 14)
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Specification