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SST SBD-800 series is a high purity solvent and has well controlled on metal ions and liquid particle. Excepting the dilution and piping cleaning, it can be treated for process improvement, such as pre-wetting: 

In case of higher viscosity resist, it is not easy to cover every place especially the serious topography while coating. The solvent dispensing before the resist, and to cover the whole wafer, it could avoid the seam/void after coating. Another benefit of pre-wetting is to reducing the resist dispensing volume.

 

     

Product Name Description Features
GBL Pre-increase the wettability of the wafer surface and improve the coating and interface compatibility of the photoresist
  1. Electronic grade chemicals
  2. It is a special product that does not produce chemical bonds and enhances interface compatibility
SBD-803 It is a main solvent in photoresist, and its main function is to dilute photoresist and other related applications.
  1. High compatibility with various types of photoresist