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. 21, 2014
Filed:
Jun. 23, 2011
Yi-hung Lin, Taichung, TW;
Meng-tsung Lee, Taichung, TW;
Sui-an Kao, Taichung, TW;
Yi-hsin Chen, Taichung, TW;
Feng-lung Chien, Taiwan, TW;
Yi-Hung Lin, Taichung, TW;
Meng-Tsung Lee, Taichung, TW;
Sui-An Kao, Taichung, TW;
Yi-Hsin Chen, Taichung, TW;
Feng-Lung Chien, Taiwan, TW;
Siliconware Precision Industries Co., Ltd., Taichung, TW;
Abstract
A semiconductor structure includes a semiconductor chip having at least an electrode pad, a first metal layer formed on the electrode pad, a second metal layer completely formed on and in contact with the first metal layer, and a conductive pillar disposed on the second metal layer, where a material of the first metal layer is different from a material of the second metal layer, the first metal layer has a first distribution-projected area larger than a second distribution projected-area of the conductive pillar, and the second metal layer has a third distribution-projected area that is the same as the second distribution-projected area of the conductive pillar.