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:
May. 24, 2005
Filed:
Aug. 29, 2003
Hung-en Tai, Taipei Hsien, TW;
Chien-chung Chen, Hsin-Chu, TW;
Hung-En Tai, Taipei Hsien, TW;
Chien-Chung Chen, Hsin-Chu, TW;
Powerchip Semiconductor Corp., Hsin-Chu, TW;
Abstract
A method for analyzing final test parameters includes the following steps: To retrieve the final test parameters of each product lots by searching a database. To compare the final test parameters to select a representative final test parameter and a representative final test item. To determine if the representative final test item is correlated to a packaging process step. To classify the plurality of product lots into at least a first qualified group and a first failed group according to the representative final test item if there is correlation. To search for the equipment through which the first qualified group or the first failed group had passed in the packaging process step. To determine the equipment having a probability of having processed the first failed group being greater than a probability of having processed the first qualified group.