发明名称 METHOD OF E-BEAM EXPOSURE ON PHOTO MASK
摘要 <p>A method for exposing an electron beam on a photomask is provided to reduce an electron beam irradiating time by decreasing a substantial thickness of a resist layer exposed by the electron beam using previously an UV(UltraViolet) laser beam on the resist layer. An electron beam is exposed on a resist layer of a photomask substrate(200). A pre-exposure process is performed on the resist layer by using a laser beam before the electron beam irradiating process. The laser beam is generated from UV rays. The pre-exposure process is performed on the entire surface of the photomask substrate.</p>
申请公布号 KR20070074340(A) 申请公布日期 2007.07.12
申请号 KR20060002338 申请日期 2006.01.09
申请人 HYNIX SEMICONDUCTOR INC. 发明人 WON, JOON IL
分类号 H01L21/027 主分类号 H01L21/027
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