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公开(公告)号:US20050082559A1
公开(公告)日:2005-04-21
申请号:US10685004
申请日:2003-10-15
申请人: Syed Hasan Zaidi , Alois Gutmann , Gary Williams
发明人: Syed Hasan Zaidi , Alois Gutmann , Gary Williams
IPC分类号: G03F7/20 , G03F9/00 , H01L21/66 , H01L23/544 , H01L29/227
CPC分类号: H01L23/544 , G03F7/70633 , G03F9/7076 , H01L2223/54466 , H01L2924/0002 , Y10T428/24802 , H01L2924/00
摘要: A method and mask to improve measurement of alignment marks is disclosed. An exemplary embodiment of the invention includes a resist mask with a patterned alignment mark comprising an assemblage of features whose spacing is smaller than the wavelength of light used to measure the alignment. In a preferred embodiment, an alignment mark patterning process alters the appearance of the alignment mark and renders an enhanced contrast with the substrate background.
摘要翻译: 公开了一种改善对准标记测量的方法和掩模。 本发明的示例性实施例包括具有图案化对准标记的抗蚀剂掩模,该掩模包括具有小于用于测量对准的光的波长的特征的组合。 在优选实施例中,对准标记图案化工艺改变对准标记的外观,并提高与衬底背景的对比度。