Semiconductor device manufacturing: process – Packaging or treatment of packaged semiconductor – Metallic housing or support
Reexamination Certificate
2008-03-04
2008-03-04
Tran, Lonh K. (Department: 2818)
Semiconductor device manufacturing: process
Packaging or treatment of packaged semiconductor
Metallic housing or support
C438S214000, C438S280000, C257S276000, C257SE23051, C257SE23101, C257SE33075
Reexamination Certificate
active
07338840
ABSTRACT:
Thermal hot spots in the substrate of a semiconductor die, and the required surface area of the semiconductor die, are substantially reduced by forming thermal or thermal and electrical pipes in the substrate that extend from a bottom surface of the substrate to a point near the top surface of the substrate.
REFERENCES:
patent: 6110825 (2000-08-01), Mastromatteo et al.
patent: 6249136 (2001-06-01), Maley
patent: 6677235 (2004-01-01), Yegnashankaran et al.
patent: 2004/0152240 (2004-08-01), Dangelo
Padmanabhan Gobi R.
Yegnashankaran Visvamohan
National Semiconductor Corporation
Pickering Mark C.
Tran Lonh K.
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