DUAL PLENUM FRACTAL SHOWERHEAD
A dual-plenum fractal (DPF) showerhead for distributing different semiconductor processing gases across a semiconductor wafer during processing operations is provided. The DPF showerhead may have a plurality of layers, each featuring a pattern of gas distribution features, with the gas distribution...
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| creator | Tucker, Jeremy Todd Schoepp, Alan M Thomas, Clint Edward |
| description | A dual-plenum fractal (DPF) showerhead for distributing different semiconductor processing gases across a semiconductor wafer during processing operations is provided. The DPF showerhead may have a plurality of layers, each featuring a pattern of gas distribution features, with the gas distribution features on each layer generally being similar in shape to the gas distribution features on the layer immediately upstream therefrom but smaller in size. Such a "fractal"-like structure to the gas flow passages provides very uniform processing gas delivery across the surface of a semiconductor wafer during processing operations, thereby enhancing wafer uniformity. |
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| subjects | CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION |
| title | DUAL PLENUM FRACTAL SHOWERHEAD |
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