The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 2006
Filed:
Aug. 19, 2004
Applicant:
Tsun-lai Hsu, Hsin-Chu Hsien, TW;
Inventor:
Tsun-Lai Hsu, Hsin-Chu Hsien, TW;
Assignee:
United Microelectronics Corp., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A substrate isolation design includes a P substrate, a P well positioned on the P substrate, at least a device positioned in the P well, and at least a P substrate guard ring surrounding the device. A P+ guard ring, an N well guard ring, or a deep N well guard ring can be selectively interposed between the P substrate guard ring and the device to facilitate blocking substrate coupling effect.