Silicon Wafer Flatness

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Silicon Wafer Flatness

One of the most important process of making a microchip is the Photolithography process. The flatter the silicon substrate the better for Photolithography.

Flatness is the linear thickness variation across the the polished surface of the wafer, or a specific area of the wafer.

We have wafer's with a Total Thickness Variation (TTV) of less than 1 micron!