This paper presents a novel wafer baking system that uses hot air streams as heating media and achieves good temperature uniformity across the entire wafer surfaces during the baking process. Wind tunnel experiments have been carried out to verify the concept of using hot air streams for wafer baking. A simple prototyping wafer baking system has been designed and fabricated, and experiments of the baking process have been conducted. Good temperature uniformity across the wafer surface has been achieved. The experimental results match well with the computer fluid dynamics (CFD) simulation results. It is observed that the velocity of the airflow has significant influence on the temperature transient responses. Further optimization of the parameters of the baking system and analytical modelling studies are currently under way.
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