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Specific Process Knowledge/Characterization/Thickness Measurer: Difference between revisions

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[[Image:Thicknessmeasurer2007.jpg|thumb|300x300px|Thickness Measurer. Positioned in cleanroom D-3]]
[[Image:Thicknessmeasurer2007.jpg|thumb|300x300px|Thickness Measurer. Positioned in cleanroom D-3]]


The purpose is to measure the thickness of wafers, depths of larger grooves or height of larger mesas.  
There are 2 thickness measurers in the cleanroom, both positioned in cleanroom D-3. The Thickness measurer is for measuring all sorts of samples. The thickness measurer (wafers) is solely for measuring the thickness of wafers or depths of grooves on wafers.  


During a KOH etch it can be helpful to ensure no over-etching by making a thickness measurement during the etching.  
During a KOH etch it can be helpful to ensure no over-etching by making a thickness measurement during the etching.