Specific Process Knowledge/Lithography/Coaters: Difference between revisions
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===Softbake=== | ===Softbake=== | ||
After spin coating, the solvent in the resist formulation must be evaporated in a baking step in order to solidify the resist. This | After spin coating, the solvent in the resist formulation must be evaporated in a baking step in order to solidify the resist. This softbake can be carried out as a contact bake or a proximity bake. In a contact bake, the wafer is held in close contact to the hotplate surface while resting on shallow bumps only 150µm above the hotplate. In a proximity bake, the wafer is first moved into proximity, e.g. 1mm, of the hotplate surface, then held there (on the lift pins) for the duration of the bake. | ||
=Spin coaters at Danchip= | =Spin coaters at Danchip= | ||