Mixed Lithography Approach for E-Beam and Optical Exposure Using HSQ
    70.
    发明申请
    Mixed Lithography Approach for E-Beam and Optical Exposure Using HSQ 有权
    使用HSQ的电子束和光学曝光的混合光刻方法

    公开(公告)号:US20170077036A1

    公开(公告)日:2017-03-16

    申请号:US15361757

    申请日:2016-11-28

    摘要: In one aspect, a method of forming a wiring layer on a wafer is provided which includes: depositing a HSQ layer onto the wafer; cross-linking a first portion(s) of the HSQ layer using e-beam lithography; depositing a hardmask material onto the HSQ layer; patterning the hardmask using optical lithography, wherein the patterned hardmask covers a second portion(s) of the HSQ layer; patterning the HSQ layer using the patterned hardmask in a manner such that i) the first portion(s) of the HSQ layer remain and ii) the second portion(s) of the HSQ layer covered by the patterned hardmask remain, wherein by way of the patterning step trenches are formed in the HSQ layer; and filling the trenches with a conductive material to form the wiring layer on the wafer.

    摘要翻译: 一方面,提供了一种在晶片上形成布线层的方法,包括:将HSQ层沉积到晶片上; 使用电子束光刻术交联HSQ层的第一部分; 将硬掩模材料沉积到HSQ层上; 使用光学平版印刷图案化硬掩模,其中图案化的硬掩模覆盖HSQ层的第二部分; 使用图案化的硬掩模以使得i)HSQ层的第一部分保留并且ii)被图案化硬掩模覆盖的HSQ层的第二部分保留的方式图案化HSQ层,其中通过 图案化步骤沟槽形成在HSQ层中; 并用导电材料填充沟槽以在晶片上形成布线层。