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Process of forming a resist structure on substrate having topographical features using positive photoresist layer and poly(vinyl pyrrolidone) overlayer
Process of forming a resist structure on substrate having topographical features using positive photoresist layer and poly(vinyl pyrrolidone) overlayer
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机译:使用正性光刻胶层和聚乙烯吡咯烷酮覆盖层在具有形貌特征的基板上形成光刻胶结构的方法
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摘要
An improved process for forming multilayer resist structures for lithographic processing of a substrate having topographical features is provided. The structures are comprised of a resist layer having thereover a layer of poly(vinyl pyrrolidone). When the resist layer is a photoresist, the subject structures may optionally contain an absorptive layer directly overlying the substrate and/or a layer of contrast enhancement material overlying the planarizing layer. The poly(vinyl pyrrolidone) optionally contains from about 0.05 to about 0.1 percent by weight of a suitable surfactant, suitably a nonionic surfactant.
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