Integrated circuit chip with seal ring structure
US7667302B1 · kind B1 · utility
16Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2008 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Sep 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.