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. 06, 2012
Filed:
Sep. 23, 2011
Ming-fan Tsai, Taichung, TW;
Kuan-yu Chen, Taichung, TW;
Bo-shiang Fang, Tantzu, TW;
Hsin-hung Lee, Taichung, TW;
Ming-Fan Tsai, Taichung, TW;
Kuan-Yu Chen, Taichung, TW;
Bo-Shiang Fang, Tantzu, TW;
Hsin-Hung Lee, Taichung, TW;
Siliconware Precision Industries Co., Ltd., Taichung, TW;
Abstract
A symmetric differential inductor structure includes first, second, third and fourth spiral conductive wirings disposed in four quadrants of a substrate, respectively. Further, a fifth conductive wiring connects the first and fourth spiral conductive wirings, and a sixth conductive wiring connects the second and third spiral conductive wirings. The first and second spiral conductive wirings are symmetric but not intersected with one another, and the third and fourth spiral conductive wirings are symmetric but not intersected with one another. Therefore, the invention attains full geometric symmetry to avoid using conductive wirings that occupy a large area of the substrate as in the prior art and to thereby increase the product profit and yield.