Semiconductor device and method of designing the same

Details Semiconductor device and method of designing the same Semiconductor device and method of designing the same

2007-07-09

2010-11-02

Rossoshek, Helen (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

C716S030000, C716S030000, C716S030000, C716S030000, C716S030000, C360S323000, C365S226000

Reexamination Certificate

active

07827512

ABSTRACT:
A plurality of internal circuits (11to14) are formed on a semiconductor chip10, and receive different power supply voltages. An ESD protection circuit (15) is connected to the power supply lines (31to34) for the internal circuits (11to14). The area in which the protection circuit (15) is formed is closer to the center of the semiconductor chip (10) than the areas for the internal circuits (11to14). Surge voltages applied to the power supply pads reach the protection circuit before reaching the reaching the internal circuits.

REFERENCES:
patent: 6479869 (2002-11-01), Hiraga
patent: 6535368 (2003-03-01), Andresen et al.
patent: 6920026 (2005-07-01), Chen et al.
patent: 7312517 (2007-12-01), Hirata
patent: 2006/0187733 (2006-08-01), Furuta et al.
patent: 2008/0313591 (2008-12-01), Watanabe
patent: 2000-208718 (2000-07-01), None
patent: 2004-146524 (2004-05-01), None

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