Integrated circuit chip with seal ring structure

Details Integrated circuit chip with seal ring structure Integrated circuit chip with seal ring structure

2008-09-09

2010-02-23

Richards, N Drew (Department: 2895)

Active solid-state devices (e.g., transistors, solid-state diode

With shielding

C257S508000, C257S660000, C257S662000, C257S678000, C257S688000, C257SE21574, C438S106000, C438S118000

Reexamination Certificate

active

07667302

ABSTRACT:
An integrated circuit chip includes an analog and/or RF circuit block, a digital circuit, and a seal ring structure surrounding and protecting the analog and/or RF circuit block. The seal ring structure comprises a continuous outer seal ring, and a discontinuous inner seal ring divided into at least a first portion and a second portion. The second portion is situated in front of the analog and/or RF circuit block for shielding a noise from interfering the analog and/or RF circuit block.

REFERENCES:
patent: 6492716 (2002-12-01), Bothra et al.
patent: 6537849 (2003-03-01), Tsai
patent: 6943063 (2005-09-01), Tsai
patent: 6967392 (2005-11-01), Tsai
patent: 7265438 (2007-09-01), Tsai
patent: 2006/0102980 (2006-05-01), Nakashiba
patent: 2006/0197214 (2006-09-01), Chen
patent: 2008/0061397 (2008-03-01), Uchida

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