Intrinsic thermal enhancement for FBGA package

A semiconductor device for dissipating heat generated by a die during operation and having a low height profile, a semiconductor die package incorporating the device, and methods of fabricating the device and package are provided. In one embodiment, the semiconductor device comprises a thick thermal...

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Lee, Teck
description A semiconductor device for dissipating heat generated by a die during operation and having a low height profile, a semiconductor die package incorporating the device, and methods of fabricating the device and package are provided. In one embodiment, the semiconductor device comprises a thick thermally conductive plane (e.g., copper plane) mounted on a thin support substrate and interfaced with a die. Thermally conductive via interconnects extending through the substrate conduct heat generated by the die from the conductive plane to conductive balls mounted on traces on the opposing side of the substrate. In another embodiment, the semiconductor devices comprises a thick thermally conductive plane (e.g., copper foil) sandwiched between insulative layers, with signal planes (e.g., traces, bonding pads) disposed on the insulative layers, a die mounted on a first signal plane, and solder balls mounted on bonding pads of a second signal plane. A thermally conductive via interconnect extends through the substrate to provide a thermal path from the die and signal plane (traces) through the thick conductive plane and into the solder balls and external device (e.g., mother board). The present semiconductor device provides effective heat dissipation without the attachment of an external heat sink or spreader.
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In one embodiment, the semiconductor device comprises a thick thermally conductive plane (e.g., copper plane) mounted on a thin support substrate and interfaced with a die. Thermally conductive via interconnects extending through the substrate conduct heat generated by the die from the conductive plane to conductive balls mounted on traces on the opposing side of the substrate. In another embodiment, the semiconductor devices comprises a thick thermally conductive plane (e.g., copper foil) sandwiched between insulative layers, with signal planes (e.g., traces, bonding pads) disposed on the insulative layers, a die mounted on a first signal plane, and solder balls mounted on bonding pads of a second signal plane. A thermally conductive via interconnect extends through the substrate to provide a thermal path from the die and signal plane (traces) through the thick conductive plane and into the solder balls and external device (e.g., mother board). 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In one embodiment, the semiconductor device comprises a thick thermally conductive plane (e.g., copper plane) mounted on a thin support substrate and interfaced with a die. Thermally conductive via interconnects extending through the substrate conduct heat generated by the die from the conductive plane to conductive balls mounted on traces on the opposing side of the substrate. In another embodiment, the semiconductor devices comprises a thick thermally conductive plane (e.g., copper foil) sandwiched between insulative layers, with signal planes (e.g., traces, bonding pads) disposed on the insulative layers, a die mounted on a first signal plane, and solder balls mounted on bonding pads of a second signal plane. A thermally conductive via interconnect extends through the substrate to provide a thermal path from the die and signal plane (traces) through the thick conductive plane and into the solder balls and external device (e.g., mother board). The present semiconductor device provides effective heat dissipation without the attachment of an external heat sink or spreader.</abstract><oa>free_for_read</oa></addata></record>
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title Intrinsic thermal enhancement for FBGA package
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