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    • 6. 发明公开
    • 광 패턴 조사 방법, 포토마스크 및 포토마스크 블랭크
    • 光图案曝光方法,照片和照片空白
    • KR1020130056188A
    • 2013-05-29
    • KR1020120131610
    • 2012-11-20
    • 신에쓰 가가꾸 고교 가부시끼가이샤도판 인사츠 가부시키가이샤
    • 요시카와히로키이나즈키유키오고이타바시류지가네코히데오고지마요스케하라구치다카시히로세도모히토
    • G03F7/20G03F1/38
    • G03F1/00G03F1/32G03F1/60
    • PURPOSE: An optical mask formed of a transition metal/silicon group material is provided to restrict deterioration changing dimension within an acceptable range, due to accumulation of ArF excimer laser irradiation, and to obtain sufficient etching selectivity. CONSTITUTION: A light pattern exposure method comprises a step of irradiating resist pattern with photo patterns, through a photo mask, by using ArF excimer laser light as a light source. The photo mask is that the ArF excimer laser light with an accumulation amount of 10kJ/cm^2 is irradiated. The photomask comprises a transparent substrate and an optical film pattern which is formed of a material containing transition metal, silicon, nitrogen, and oxygen. The transition metal is hexavalent. Contents of transition metal, silicon, nitrogen, and oxygen in the photo mask, except for the outermost surface part extended to 10 nm from the surface of a layer, satisfies following equations, equation 1: 6×C_M/100 - 4×CSi/100 = 0.094, wherein the equations, C_M is a content of transition metal(atom%), C_Si is a content of silicon(atom%), C_N is a content of nitrogen(atom%), and C_O is a content of oxygen(atom%). [Reference numerals] (AA) Line width changed amount(Relative value); (BB) Value of a mathematical equation 1
    • 目的:提供由过渡金属/硅基材料形成的光掩模,以通过ArF准分子激光照射的积累将劣化变化维度限制在可接受的范围内,并获得足够的蚀刻选择性。 构成:光照曝光方法包括通过使用ArF准分子激光作为光源通过光掩模照射具有照片图案的抗蚀剂图案的步骤。 光掩模是照射积聚量为10kJ / cm 2的ArF准分子激光。 光掩模包括透明基板和由含有过渡金属,硅,氮和氧的材料形成的光学膜图案。 过渡金属是六价的。 光掩模中的过渡金属,硅,氮和氧的含量除了从表面延伸到10nm的最外表面部分满足以下等式,等式1:6×C_M / 100-4×CSi / 100 <= -0.89,等式2:6C_M×3C_N /(6C_M×6C_M + 6C_M×4C_Si + 6C_M×3C_N + 6C_M×2C_O + 4C_Si×4C_Si + 4C_Si×3C_N + 4C_Si×2C_O)> = 0.094,其中等式 C_M是过渡金属的含量(原子%),C_Si是硅的含量(原子%),C_N是氮的含量(原子%),C_O是氧的含量(原子%)。 (附图标记)(AA)线宽变化量(相对值); (BB)数学方程的值1