Patent ID: 9059039
Filing Date: 2015-06-16
Classification: H01L

Abstract:
1. A method of bonding a first wafer article with a second wafer article, comprising: thermally treating a bonding layer of a first wafer article in accordance with first process parameters, and thermally treating a bonding layer of a second wafer article in accordance with second process parameters; measuring first and second grid distortion in the first and second wafer articles, respectively, determining a difference between the first and second grid distortions and determining a prediction for maintaining the difference within a prescribed tolerance; conditionally varying at least one of the first process parameters and the second process parameters in accordance with the prediction; performing the thermally treating of the first wafer article and the thermally treating of the second wafer article with respect to another pair of the first and second wafer articles after the conditionally varying of the process parameters; and bonding the another pair of wafer articles to one another through their respective bonding layers.