Lithographic apparatus, device manufacturing method, and device manufactured thereby
    4.
    发明授权
    Lithographic apparatus, device manufacturing method, and device manufactured thereby 有权
    平版印刷设备,器件制造方法和由此制造的器件

    公开(公告)号:US06809797B2

    公开(公告)日:2004-10-26

    申请号:US10109038

    申请日:2002-03-29

    IPC分类号: G02B2768

    CPC分类号: G03F7/705 G03F7/706

    摘要: A device manufacturing method is disclosed in which the aberration of the projection system of a lithographic projection apparatus is obtained in terms of the Zernike expansion. The field distribution of displacement error and focal plane distortion of the projected image are calculated on the basis of the Zernike aberration and sensitivity coefficients which quantify the relationship between Zernike aberration components and the error in the image. A calculation is then performed to determine the compensation to apply to the apparatus in order to minimize the error in the image. The compensation is then applied to the apparatus. The compensation may comprise increasing one component of aberration of the apparatus in order to decrease the effect of another aberration, such that, on balance, the image quality as a whole is improved.

    摘要翻译: 公开了一种装置制造方法,其中光泽投影装置的投影系统的像差取得Zernike扩展。 基于Zernike像差和灵敏度系数计算投影图像的位移误差和焦平面失真的场分布,Zernike像差和灵敏度系数量化了Zernike像差分量与图像中的误差之间的关系。 然后执行计算以确定应用于装置的补偿,以使图像中的误差最小化。 然后将补偿应用于该装置。 补偿可以包括增加装置的像差的一个分量,以便减小另一个像差的影响,从而平衡地改善了整体上的图像质量。