Abstract
A simple testing method is presented that allows the comparison of the bond quality for anodically bonded wafers. An array of parallel metal lines of predetermined thickness is formed on a glass wafer. The estimation of the bond quality can be performed by visual inspection after the bonding. This method enables comparison of the anodic-bonding process performance for different glasses, for intermediate layers and various bonding conditions. The optimization of silicon-glass anodic bonding with an intermediate phosphosilicate glass (PSG) layer is shown using this technique.
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