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    • 6. 发明公开
    • 실리콘 질화막 식각액 조성물
    • 硅氧化物或氧化硅浸渍的组合物
    • KR1020120077676A
    • 2012-07-10
    • KR1020100139731
    • 2010-12-31
    • 솔브레인 주식회사
    • 임정훈이양화이진욱박재완
    • C23F1/24C09K13/04
    • C23F1/30C09K13/04
    • PURPOSE: An etchant composition for a silicon nitride film is provided to prevent the reduction of etching speed and the variation of selection ratio and maintain a constant etching speed even in a long-time use. CONSTITUTION: An etchant composition for a silicon nitride film comprises 60-95wt.% of phosphoric acid, 0.01-20wt.% of ammonium based compound, 0.01-1wt.% of fluorinated compound, and the remaining amount of water. The ammonium based compound is a mixture of one or more selected from the group consisting of ammonia, ammonium chloride, ammonium acetic acid, ammonium phosphate, ammonium peroxysulfate, and ammonium sulfate.
    • 目的:提供氮化硅膜的蚀刻剂组合物,以防止蚀刻速度的降低和选择比的变化,并且即使长时间使用也能保持恒定的蚀刻速度。 构成:用于氮化硅膜的蚀刻剂组合物包含60-95重量%的磷酸,0.01-20重量%的铵基化合物,0.01-1重量%的氟化合物和剩余的水量。 铵基化合物是选自氨,氯化铵,乙酸铵,磷酸铵,过硫酸铵和硫酸铵中的一种或多种的混合物。