Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means
Reexamination Certificate
2006-02-22
2010-02-09
Nguyen, Danny (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Load shunting by fault responsive means
C361S111000
Reexamination Certificate
active
07660085
ABSTRACT:
A conventional layout of power supply protective element cannot sufficiently protect an internal circuit against a surge current that flows into a narrow branch line that branches off from a thick main wiring line. A semiconductor device according to an embodiment of the present invention includes a power supply protective element connected around a terminal; a main wiring line connected with a VCC pad or a GND pad; a branch line that branches off from the main wiring line and applies a power supply potential or a ground potential to a functional block of the semiconductor device; a branching portion at which the branch line branches off from the main wiring line; and an internal power supply protective element connected with the branch line.
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C. Duvvury et al., “Internal Chip ESD Phenomena Beyond the Protection Circuit,” IEEE Transactions on Electronic Devices, vol. 35:12, 1998, pp. 2133-2139.
Furuta Hiroshi
Hashimoto Kiyokazu
Hibino Kenji
Jinbo Toshikatsu
Natsume Hidetaka
Foley & Lardner LLP
NEC Electronics Corporation
Nguyen Danny
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