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:
Jul. 09, 2024
Filed:
Dec. 06, 2019
Applicant:
Weifang Goertek Microelectronics Co., Ltd., Shandong, CN;
Inventors:
Assignee:
Weifang Goertek Microelectronics Co., Ltd., Shandong, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/84 (2006.01); G01N 1/32 (2006.01); G01N 21/95 (2006.01);
U.S. Cl.
CPC ...
G01N 21/9501 (2013.01); G01N 1/32 (2013.01); G01N 2021/8433 (2013.01);
Abstract
Disclosed is a method for detecting coverage rate of an intermetallic compound, the method comprising putting a chip subjected to wire bonding into a mixed reagent of fuming nitric acid and fuming sulfuric acid for soaking, wherein the chip subjected to wire bonding comprises a silver wire and an aluminum; taking out the chip after the silver wire is removed; and detecting the coverage rate of an intermetallic compound on the aluminum pad.