Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – With provision for cooling the housing or its contents
Reexamination Certificate
2007-06-12
2008-08-19
Andujar, Leonardo (Department: 2826)
Active solid-state devices (e.g., transistors, solid-state diode
Housing or package
With provision for cooling the housing or its contents
C257SE23103, C257S707000, C257SE23130, C438S122000
Reexamination Certificate
active
07414311
ABSTRACT:
A ball grid array housing, a semiconductor device having a ball grid array housing and an electronic circuit are disclosed. In one embodiment, a ball grid array housing includes a substrate with solder ball connections pointing out from a housing and at least one semiconductor chip. For better heat dissipation from the housing, the ball grid includes a metallic cooling foil, or a metallic cooling plate. A method of making a ball grid array is also disclosed.
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Lee, An Investigation of Thermal Enhancement on Flip Chip Plastic BGA Packages Using CFD Tool, IEEE Transactions on Components and Packaging Technologies, vol. 23, No. 3, September 200, pp. 481-489.
Andujar Leonardo
Dicke Billig & Czaja, PLLC
Infineon - Technologies AG
Soderholm Krista
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