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:
Oct. 16, 2012
Filed:
Dec. 08, 2010
Tzuyin Chiu, Shanghai, CN;
Xiangming Xu, Shanghai, CN;
Miao Cai, Shanghai, CN;
Shanghai Hua Hong NEC Electronics Co., Ltd., Shanghai, CN;
Abstract
A stacked inductor with combined metal layers is represented in this invention. The stacked inductor includes: a top layer metal coil, and at least two lower layer metal coils, the metal coils being aligned with each other; adjacent metal coils being connected at the corresponding ends through a via; wherein, each of the lower layer metal coils is consisted of plural layers of metal lines which are interconnected. With the same chip area, the stacked inductor of the present invention can achieve higher inductance and Q factor because of the mutual inductance generated from the plural layers of metal lines and the reduced parasitic resistance.