首页> 外文会议>Conference on Emerging Lithographic Technologies VI Pt.1, Mar 5-7, 2002, Santa Clara, USA >Pattern Printability for Off-axis Incident Light in EUV Lithography
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Pattern Printability for Off-axis Incident Light in EUV Lithography

机译:EUV光刻中离轴入射光的图案可印刷性

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摘要

Off-axis incident light produces shadowing and an imbalance in the diffracted light. Shadowing causes a change in the critical dimension (CD) and a shift in the position of patterns due to the swing + bulk effect of the absorber and buffer layers. In addition, the imbalance in the diffracted light influences the optical proximity-effect correction (OPC) of actual patterns with a k1 below 0.6. In this study, the main factors influencing OPC were investigated. These include asymmetric aberrations and optical proximity effects (OPE) in line patterns. OPC was then applied to a T-shaped pattern. It is found that the mask error factor (MEF) in low-contrast regions of a layout is an important consideration in OPC.
机译:离轴入射光会产生阴影,并在衍射光中产生不平衡。由于吸收层和缓冲层的摆动和体积效应,阴影会导致临界尺寸(CD)的变化和图案位置的变化。此外,衍射光的不平衡会影响k1小于0.6的实际图案的光学邻近效应校正(OPC)。在这项研究中,调查了影响OPC的主要因素。这些包括线条图案中的不对称像差和光学邻近效应(OPE)。然后将OPC应用于T形图案。发现在布局的低对比度区域中的掩模误差因子(MEF)是OPC中的重要考虑因素。

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