Invention Grant
US09176385B2 Lithography methods, methods for forming patterning tools and patterning tools 有权
平版印刷方法,图案形成工具和图形工具的形成方法

Lithography methods, methods for forming patterning tools and patterning tools
Abstract:
Methods of lithography, methods for forming patterning tools, and patterning tools are described. One such patterning tool include an active region that forms a first diffraction image on a lens when in use, and an inactive region that forms a second diffraction image on a lens when in use. The inactive region includes a pattern of phase shifting features formed in a substantially transparent material of the patterning tool. Patterning tools and methods, as described, can be used to compensate for lens distortion from effects such as localized heating.
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