What is the role of the semiconductor wafer
, in fact, is still relatively soft, before the back of the plasma ETCH will generally have a step UVbake, reinforcement) from the center to the outside of the proliferation of a circle around, until completely flat
You can see when the glue drops to the Wafer on a drop of liquid (uniform after the high temperature treatment, evaporation of moisture, stereotypes, said to be solid
The main role of the glue is coated with photoresist coated flat, the use of high-speed rotation of the centrifugal force
