Active solid-state devices (e.g. – transistors – solid-state diode – Integrated circuit structure with electrically isolated... – With contact or metallization configuration to reduce...
Reexamination Certificate
2011-03-01
2011-03-01
Mandala, Victor A (Department: 2826)
Active solid-state devices (e.g., transistors, solid-state diode
Integrated circuit structure with electrically isolated...
With contact or metallization configuration to reduce...
C257S499000, C257S491000, C257S484000, C257S483000, C257S170000, C257SE23114, C257SE29007
Reexamination Certificate
active
07898056
ABSTRACT:
Disclosed is a seal-ring architecture that can minimize noise injection from noisy digital circuits to sensitive analog and/or radio frequency (RF) circuits in system-on-a-chip (SoC) applications. In order to improve the isolation, the seal-ring structure contains cuts and ground connections to the segment which is close to the analog circuits. The cuts are such that the architecture is fully compatible with standard design rules and that the mechanical strength of the seal rings is not significantly sacrificed. Some embodiments also include a grounded p-tap ring between the analog circuits and the inner seal ring in order to improve isolation. Some embodiments also include a guard strip between the analog circuits and the digital circuits to minimize the noise injection through the substrate.
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Heshami Mehrdad
Islam Syed S.
Keramat Mansour
Alvand Technology, Inc.
Imam Maryam
IPxLaw Group LLP
Mandala Victor A
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