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    • 9. 发明授权
    • Projection exposure apparatus, projection exposure method and projection objective
    • 投影曝光装置,投影曝光方法和投影物镜
    • US07834981B2
    • 2010-11-16
    • US11747630
    • 2007-05-11
    • Hans-Juergen RostalskiHeiko FeldmannWilhelm Ulrich
    • Hans-Juergen RostalskiHeiko FeldmannWilhelm Ulrich
    • G03B27/54G03B27/42
    • G03F7/70225G02B17/0892G03F7/70275
    • A projection exposure apparatus for the exposure of a radiation-sensitive substrate arranged in the region of an image surface of a projection objective with at least one image of a pattern of a mask that is arranged in the region of an object surface of the projection objective has a light source for emitting ultraviolet light from a wavelength band having a bandwidth Δλ>10 pm around a central operating wavelength λ>200 nm; an illumination system for receiving the light from the light source and for directing illumination radiation onto the pattern of the mask; and a projection objective for the imaging of the structure of the mask onto a light-sensitive substrate. The projection objective is a catadioptric projection objective having at least one concave mirror arranged in a region of a pupil surface of the projection objective, and a negative group having at least one negative lens arranged in direct proximity to the concave mirror in a region near the pupil surface, where a marginal ray height (MRH) of the imaging is greater than a chief ray height (CRH).
    • 一种投影曝光装置,用于曝光布置在投影物镜的图像表面的区域中的辐射敏感基板,其具有布置在投影物镜的物体表面的区域中的掩模图案的至少一个图像 具有用于从围绕中心工作波长λ> 200nm的带宽&Dgr;λ>10μm的波长带发射紫外光的光源; 照明系统,用于接收来自光源的光并将照射辐射引导到掩模的图案上; 以及用于将掩模的结构成像到感光基板上的投影物镜。 投影物镜是一个反射折射投影物镜,它具有至少一个凹面镜,该凹面镜布置在投影物镜的光瞳表面的区域中,以及一个负极组,具有至少一个负透镜, 瞳孔表面,其中成像的边缘射线高度(MRH)大于主射线高度(CRH)。