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    • 58. 发明申请
    • Copper electroplating bath composition and a method of copper electroplating to improve gapfill
    • 铜电镀浴组合物和铜电镀方法,以改善填缝
    • US20060065536A1
    • 2006-03-30
    • US10956282
    • 2004-09-30
    • David JentzRamesh ViswanathanPaul McGregorValery DubinRajiv Rastogi
    • David JentzRamesh ViswanathanPaul McGregorValery DubinRajiv Rastogi
    • C25D3/00C25D3/38
    • H01L21/76877C25D3/38C25D5/18C25D7/123H01L21/2885
    • A copper electroplating bath composition and a method of copper electroplating to improve gapfill are provided. The method of electroplating includes providing an aqueous electroplating composition, comprising copper, at least one acid, at least one halogen ion, an additive including an accelerating agent, a suppressing agent, and a suppressing-accelerating agent, and the solution and mixture products thereof; contacting a substrate with the plating composition; and impressing a multi-step waveform potential upon the substrate, wherein the multi-step waveform potential includes an entry step, wherein the entry step includes a first sub-step applying a first current and a second sub-step applying second current, the second current being greater than the first current. The accelerating agent is provided in concentration of greater than 1.5 ml/liter, the suppressing agent is provided in concentration of greater than 15 ml/liter, and the accelerating-suppressing agent is provided in concentration of greater than 10 ml/liter.
    • 提供铜电镀浴组合物和镀铜方法以改善间隙填充。 电镀方法包括提供包含铜,至少一种酸,至少一种卤素离子,包含促进剂,抑制剂和抑制促进剂的添加剂的含水电镀组合物及其溶液和混合物产物 ; 使基板与电镀组合物接触; 并且在所述基板上施加多步波形电位,其中所述多步波形电位包括入口步骤,其中所述入口步骤包括施加施加第二电流的第一电流和第二子步骤的第一子步骤,所述第二子步骤 电流大于第一电流。 以大于1.5ml /升的浓度提供促进剂,以大于15ml /升的浓度提供抑制剂,并且以大于10ml /升的浓度提供促进抑制剂。