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    • 1. 发明申请
    • COATING METHOD AND COATING APPARATUS
    • 涂料方法和涂料装置
    • US20110312190A1
    • 2011-12-22
    • US13161948
    • 2011-06-16
    • Katsunori IchinoKentaro YoshiharaKousuke Yoshihara
    • Katsunori IchinoKentaro YoshiharaKousuke Yoshihara
    • H01L21/31B05C13/02
    • B05D1/005B05D3/104G03F7/162H01L21/6715H01L21/67178
    • A coating method based on such a technique includes a prewetting step of supplying a prewetting liquid to the center of a substrate (W) and rotating the substrate thereby spreading the prewetting liquid over the whole surface of a first substrate, and a coating film forming step of supplying a coating solution (e.g., a resist solution) to the substrate supplied with the prewetting liquid and drying the coating solution thereby forming a coating film on the surface of the first substrate. The prewetting liquid used is a mixed liquid obtained by mixing a solvent capable of dissolving components of the coating film (e.g., components of resist) and a high surface tension liquid having a surface tension higher than that of the solvent, the mixed liquid having a surface tension higher than that of the coating solution.
    • 基于这种技术的涂布方法包括:预润湿步骤,将预润湿液体供给到基板(W)的中心并旋转基板,从而将预润湿液体扩展到第一基板的整个表面上;以及涂膜形成步骤 向提供预润湿液体的基材供给涂布溶液(例如,抗蚀剂溶液)并干燥涂布溶液,从而在第一基板的表面上形成涂膜。 所使用的预润湿液是通过混合能够溶解涂膜的成分(例如抗蚀剂的成分)的溶剂和表面张力高于溶剂的表面张力的高表面张力液体得到的混合液,所述混合液具有 表面张力高于涂层溶液。