Thermally stable photoresists with high sensitivity
    10.
    发明授权
    Thermally stable photoresists with high sensitivity 失效
    热稳定的光致抗蚀剂具有高灵敏度

    公开(公告)号:US4939070A

    公开(公告)日:1990-07-03

    申请号:US215966

    申请日:1988-07-07

    IPC分类号: G03F7/039

    摘要: The present invention discloses particular lithographic polymeric materials and methods of using these materials, wherein the polymeric materials have acid labile or photolabile groups pendant to the polymer backbone. The polymeric materials are sufficiently transparent to deep UV radiation to permit deep UV imaging, can be used to produce resist structures having thermal stability at temperatures greater than about 160.degree. C., and are sufficiently resistant to excessive crosslinking when heated to temperatures ranging from about 160.degree. C. to about 250.degree. C. that they remain soluble in common lithographic developers and strippers.The present invention also discloses resists comprising substituted polyvinyl benzoates which, after imaging, exhibit unexpectedly high thermal stability, in terms of plastic flow. These resists cannot be imaged using deep UV because they exhibit such a high degree of opacity below 280 nm; however, they are useful as the top, imaging layer in a bilayer resist process wherein the top layer acts as a mask during deep UV exposure of the bottom layer.

    摘要翻译: 本发明公开了特定的平版印刷聚合物材料和使用这些材料的方法,其中聚合物材料具有垂直于聚合物主链的酸不稳定性或光不稳定性基团。 聚合物材料对于深紫外线辐射具有足够的透明度以允许深紫外成像,可用于生产在大于约160℃的温度下具有热稳定性的抗蚀剂结构,并且当加热至约 160℃至约250℃,它们仍溶于普通的平版印刷显影剂和剥离剂。 本发明还公开了包含取代的聚乙烯基苯甲酸酯的抗蚀剂,其在成像之后,在塑性流动方面表现出意想不到的高热稳定性。 这些抗蚀剂不能使用深紫外成像,因为它们在280nm以下表现出如此高的不透明度; 然而,它们可用作双层抗蚀剂工艺中的顶部成像层,其中顶层在底层的深紫外线曝光期间用作掩模。