Device manufacturing method, method of making mask, and mask
    1.
    发明专利
    Device manufacturing method, method of making mask, and mask 有权
    装置制造方法,制作掩模和掩模的方法

    公开(公告)号:JP2008293012A

    公开(公告)日:2008-12-04

    申请号:JP2008129058

    申请日:2008-05-16

    Inventor: DICKER GERALD

    CPC classification number: G03F7/70441 G03F1/36 G03F7/70433

    Abstract: PROBLEM TO BE SOLVED: To provide a method of improving the imaging of patterns having a small exposure latitude and/or improving exposure latitude without detriment to DOF (depth of focus). SOLUTION: In a lithographic device manufacturing method, sub-resolution assist features are provided to equalize the intensities of the diffraction orders that form the image of the pattern on a substrate. In the case of bright lines against a dark field used with a positive tone resist for forming trenches at or near resolution, the assist features may comprise narrow lines equidistantly between the feature lines. In this way, an improvement of exposure latitude may be obtained without reduction of DOF. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种改善具有小曝光宽容度和/或改善曝光宽容度的图案的成像的方法,而不损害DOF(深度聚焦)。 解决方案:在光刻设备制造方法中,提供了次分辨率辅助特征以均衡在基板上形成图案的图像的衍射级的强度。 在与用于以分辨率或近分辨率形成沟槽的正色调抗蚀剂一起使用的暗场的亮线的情况下,辅助特征可以包括在特征线之间等距的窄线。 以这种方式,可以获得曝光宽容度的改善而不减少自由度。 版权所有(C)2009,JPO&INPIT

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