Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – With provision for cooling the housing or its contents
Patent
1999-03-17
2000-10-10
Williams, Alexander Oscar
Active solid-state devices (e.g., transistors, solid-state diode
Housing or package
With provision for cooling the housing or its contents
257737, 257738, 257713, 257778, 257675, 257669, 257717, 257673, H01L 2331, H01L 2348, H01L 2334
Patent
active
061304778
ABSTRACT:
A thin enhanced TAB BGA package includes an IC chip, a substrate having a center opening and one side laid with a metallic circuitry which has a plurality of inner leads extending to the center opening, a plurality of metallic solder balls attached to the substrate at one side and coupling with the metallic circuitry, and a heat dissipating member adhering partly to the a side of the chip and partly to the substrate for heat dissipating, positioning and supporting the IC chip and the substrate. The IC chip has a another side exposed to ambience to add heat dissipating effect. The heat dissipating member has about same thickness as the substrate. Hence the ball grid array package may be made of a small size and thin thickness. The adhering of heat dissipating member to the chip and substrate may be done at the same process of bonding the inner leads to the IC chip. Thus the thin enhanced TAB BGA package of this invention may be produced at low cost without additional equipment or process.
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Chen Tsung-Chieh
Hsu Cheng-Chieh
Hsu Ken-Hsiung
Peng Yi-Liang
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