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    • 1. 发明授权
    • Method of forming line/space patterns
    • 形成线/空格的方法
    • US08338310B2
    • 2012-12-25
    • US12786466
    • 2010-05-25
    • Sung-gon JungSuk-joo LeeWoo-sung HanSeong-woon Choi
    • Sung-gon JungSuk-joo LeeWoo-sung HanSeong-woon Choi
    • H01L21/301
    • H01L21/3086H01L27/105H01L27/115H01L27/11517
    • A method of forming a line/space pattern includes forming a plurality of first pattern structures on a layer of hard mask material disposed on a substrate, forming a plurality of second pattern structures along sidewalls of the first pattern structures, removing the first pattern structures such that the second pattern structures stand alone on the layer of hard mask material, forming a first mask that exposes a location where a space of the line/space pattern to be formed is to have a width greater than the distance between adjacent ones of the second pattern structures, removing those of the second pattern structures which are exposed by the first mask such that others of the second pattern structures remain on the layer of hard mask material, forming a second mask that covers a location where a line of the line/space pattern to be formed is to have a width that is greater than the widths of the second pattern structures, forming a hard mask by etching the hard mask material layer using the second mask and the remaining second pattern structures as an etch mask, and etching the substrate using the hard mask as an etch mask.
    • 形成线/空间图案的方法包括在设置在基板上的硬掩模材料层上形成多个第一图案结构,沿着第一图案结构的侧壁形成多个第二图案结构,将第一图案结构 所述第二图案结构在所述硬掩模材料层上独立地形成,形成第一掩模,所述第一掩模暴露要形成的所述线/空间图案的空间的位置的宽度大于所述第二掩模 去除由第一掩模曝光的第二图案结构的图案结构,使得其他第二图案结构保留在硬掩模材料层上,形成覆盖线/空间线的位置的第二掩模 要形成的图案是具有大于第二图案结构的宽度的宽度,通过蚀刻硬掩模材料层形成硬掩模 将第二掩模和剩余的第二图案结构作为蚀刻掩模,并使用硬掩模作为蚀刻掩模蚀刻该衬底。