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    • 95. 发明专利
    • Photomask blank, photomask and method for manufacturing photomask
    • PHOTOMASK BLANK,PHOTOMASK和制造光电子的方法
    • JP2009244752A
    • 2009-10-22
    • JP2008093517
    • 2008-03-31
    • Hoya CorpHoya株式会社
    • HASHIMOTO MASAHIROIWASHITA HIROYUKIKOMINATO ATSUSHI
    • G03F1/30G03F1/32G03F1/34G03F1/50G03F1/52G03F1/54
    • G03F1/32G03F1/46G03F1/50
    • PROBLEM TO BE SOLVED: To thin a light-shielding layer (i.e., to thin a light-shielding film and a transfer pattern) necessary for generations of DRAM half-pitch (hp) 45 nm and after in a semiconductor design rule, especially for a generation of hp 32-22 nm, as to a photomask blank to be used for manufacturing a photomask for ArF eximer laser exposure. SOLUTION: The photomask includes a light-shielding film 10 formed on a light-permeable substrate and comprising: a light-shielding layer 12 composed of a molybdenum silicide metal in which the content of molybdenum is more than 20 atom % and 40 atom % and less and the thickness of the layer is less than 40 nm; an anti-reflection layer 13 formed in contact with the light-shielding layer 12 and composed of a molybdenum silicide compound containing at least one of oxygen and nitrogen; and a low reflection layer 11 formed under the light-shielding layer 12 in contact with the light-shielding layer 12. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了使半导体半间距(hp)45nm的几代所需的遮光层(即,减薄遮光膜和转印图案)变薄,并且在半导体设计规则之后 ,特别是对于一代hp 32-22nm,用于制造用于ArF准分子激光曝光的光掩模的光掩模坯料。 解决方案:光掩模包括形成在透光基板上的遮光膜10,包括:由钼含量大于20原子%的钼硅化物金属组成的遮光层12和40 原子%以下,层的厚度小于40nm; 形成为与遮光层12接触并由含有氧和氮的至少一种的硅化钼化合物构成的抗反射层13; 以及形成在遮光层12下方的与遮光层12接触的低反射层11.版权所有(C)2010,JPO&INPIT
    • 96. 发明专利
    • Photomask blank and photomask
    • PHOTOMASK BLANK和PHOTOMASK
    • JP2009230151A
    • 2009-10-08
    • JP2009132282
    • 2009-06-01
    • Hoya CorpHoya株式会社
    • KOMINATO ATSUSHIYAMADA TAKAYUKISAKAMOTO MINORUHASHIMOTO MASAHIRO
    • G03F1/32G03F1/54G03F1/68G03F1/80H01L21/027
    • G03F1/26G03F1/46G03F1/54G03F1/80
    • PROBLEM TO BE SOLVED: To provide a photomask blank and a method for manufacturing a photomask in which a dry etching time can be reduced and a film reduction of a resist film can be decreased by increasing a dry etching rate of a light-shielding film, and thereby, reduction in the thickness (to 300 nm or less) of the resist film can be achieved, pattern resolution and pattern accuracy (CD accuracy) can be improved, and further, by reducing the dry etching time, a pattern of the light-shielding film having a favorable cross-sectional feature can be formed. SOLUTION: The photomask blank has a light-shielding film 2 on a light-transmitting substrate 1, wherein the photomask blank is a mask blank for a dry etching process adapted for a photomask production method of patterning the light-shielding film by the dry etching process using as a mask a pattern 3a of a resist to be formed on the light shielding film. The light-shielding film is made of a material having a selectivity exceeding 1 with respect to the resist in the dry etching process. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了提供光掩模坯料和制造光掩模的方法,其中可以减少干蚀刻时间,并且可以通过增加光掩模坯料的干蚀刻速率来降低抗蚀剂膜的膜还原, 可以实现抗蚀剂膜的厚度(〜300nm以下)的降低,能够提高图形分辨率和图案精度(CD精度),进一步,通过减少干蚀刻时间, 可以形成具有良好横截面特征的遮光膜。 光掩模坯料在透光性基板1上具有遮光膜2,其中光掩模坯料是用于干法蚀刻工艺的掩模坯料,其适用于通过使掩模膜图案化的光掩模生产方法 使用作为掩模的形成在遮光膜上的抗蚀剂的图案3a的干蚀刻工艺。 遮光膜由干蚀刻工艺中的抗蚀剂选择性超过1的材料制成。 版权所有(C)2010,JPO&INPIT
    • 97. 发明专利
    • Photomask blank, photomask, and methods of manufacturing them
    • PHOTOMASK BLANK,PHOTOMASK及其制造方法
    • JP2009230113A
    • 2009-10-08
    • JP2009015734
    • 2009-01-27
    • Hoya CorpHoya株式会社
    • NOZAWA JUN
    • C23C14/06G03F1/50G03F1/54G03F1/58
    • G03F1/58G03F1/46
    • PROBLEM TO BE SOLVED: To provide a photomask blank where an extremely fine pattern is formed, and a photomask which includes the fine pattern formed on the photomask blank. SOLUTION: A photomask blank includes a light-shielding film composed of at least two layers on a transparent substrate. The light-shielding film includes a light-shielding layer made of a material mainly containing tantalum nitride and further containing xenon, and an antireflection layer laminated on the upper face of the light-shielding layer and made of a material mainly containing tantalum oxide and further containing argon. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供形成极细图案的光掩模坯料和包括形成在光掩模坯料上的精细图案的光掩模。 解决方案:光掩模坯料包括在透明基板上由至少两层构成的遮光膜。 遮光膜包括由主要包含氮化钽并进一步含有氙的材料制成的遮光层和层叠在遮光层的上表面上并由主要包含氧化钽的材料制成的抗反射层 含氩。 版权所有(C)2010,JPO&INPIT
    • 98. 发明专利
    • Photomask blank, photomask, and photomask manufacturing method
    • PHOTOMASK BLANK,PHOTOMASK和PHOTOMASK制造方法
    • JP2009230112A
    • 2009-10-08
    • JP2009015733
    • 2009-01-27
    • Hoya CorpHoya株式会社
    • NOZAWA JUN
    • G03F1/50G03F1/54H01L21/027
    • G03F1/46G03F1/50G03F1/58G03F1/80
    • PROBLEM TO BE SOLVED: To provide a photomask blank where an extremely fine pattern is formed, and a photomask which includes the fine pattern formed on the photomask blank.
      SOLUTION: The photomask blank includes a light-shielding film composed of at least two layers on a transparent substrate. The light-shielding film includes a light-shielding layer made of a material mainly containing tantalum nitride contained less than 62 at% nitrogen. The material is dry-etched with a chlorine-based gas containing no oxygen. The light-shielding film further includes a front-surface antireflection layer formed on the upper layer face of the light-shielding layer and made of a material not dry-etched with a chlorine-based gas, but dry-etched with a fluorine-based gas.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供形成极细图案的光掩模坯料,以及包含形成在光掩模坯料上的精细图案的光掩模。 解决方案:光掩模坯料包括在透明基板上由至少两层构成的遮光膜。 遮光膜包括由主要包含小于62at%氮的氮化钽的材料制成的遮光层。 用不含氧的氯基气体对该材料进行干法蚀刻。 遮光膜还包括形成在遮光层的上层面上并由未用氯气气体干蚀刻的材料制成的前表面抗反射层,但用氟基 加油站。 版权所有(C)2010,JPO&INPIT