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:
Nov. 21, 2006
Filed:
Apr. 20, 2006
Applicant:
Sheng-yow Chen, Taichung, TW;
Inventor:
Sheng-Yow Chen, Taichung, TW;
Assignee:
Airoha Technology Corp., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/544 (2006.01);
U.S. Cl.
CPC ...
Abstract
An integrated circuit chip is provided. The chip includes a silicon substrate, a circuit, a seal ring, a ground ring and a guard ring. The circuit is formed on the silicon substrate and has an input/output (I/O) pad. The seal ring is formed on the silicon substrate and surrounds the circuit and the I/O pad. The ground ring is formed between the silicon substrate and the I/O pad, and the ground ring is electrically connected with the seal ring. The guard ring is formed above the silicon substrate and surrounds the I/O pad, and the guard ring is electrically connected with the seal ring.