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    • 81. 发明申请
    • METHOD FOR CLEANING WAFER
    • 清洗方法
    • US20160254140A1
    • 2016-09-01
    • US15026722
    • 2014-09-08
    • CENTRAL GLASS COMPANY, LIMITED
    • Masanori SAITOTakashi SAIOSoichi KUMONShinobu ARATA
    • H01L21/02B08B3/08C11D7/08C11D11/00C11D7/26
    • H01L21/02068B08B3/08C07F9/3808C11D7/06C11D7/08C11D7/261C11D7/265C11D7/3209C11D7/3218C11D11/0047
    • A method for cleaning a wafer that has a pattern of recessed and projected portions formed on a surface thereof and contains at least one element selected from titanium, tungsten, aluminum, copper, tin, tantalum, and ruthenium on a surface of a recessed portion of the pattern. The method at least includes a pre-treating step of holding a cleaning liquid at least in the recessed portion of the pattern; a protective film forming step of holding a protective film forming chemical liquid, which is a chemical liquid containing a water-repellant protective film forming agent, at least in the recessed portion of the pattern after the pre-treating step; and a drying step of removing the liquids from the pattern by drying. The cleaning liquid is acidic if the protective film forming chemical liquid is basic, or is basic if the protective film forming chemical liquid is acidic.
    • 一种用于清洁晶片的方法,所述晶片具有形成在其表面上的凹入和突出部分的图案,并且包含选自钛,钨,铝,铜,锡,钽和钌中的至少一种元素, 模式。 该方法至少包括至少在图案的凹部中保持清洁液体的预处理步骤; 保护膜形成步骤,至少在预处理步骤的图案的凹部中之后,保持作为含有防水保护膜形成剂的化学液体的形成保护膜的药液; 以及通过干燥从图案中除去液体的干燥步骤。 如果保护膜形成的化学液体是碱性的,则清洁液体是酸性的,或者如果形成保护膜的化学液体是酸性的,则是基本的。