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    • 3. 发明授权
    • Manufacturing method for semiconductor integrated circuit device
    • 半导体集成电路器件的制造方法
    • US08187966B2
    • 2012-05-29
    • US12411387
    • 2009-03-25
    • Hiroyuki MasudaHiroshi OshitaNobuhiro Konishi
    • Hiroyuki MasudaHiroshi OshitaNobuhiro Konishi
    • H01L21/4763
    • H01L21/02074H01L21/67046H01L21/67051H01L21/67219H01L21/67745H01L21/76808H01L21/76832H01L21/76834H01L2221/1036
    • A Cu-CMP step applied to processes for 130 nm, 90 nm, and 65 nm technical nodes or the like mainly employs slurry to which an anticorrosive agent is added for preventing corrosion of Cu wiring. The inventors of the present application have studied and clearly found that in the Cu-CMP step using the slurry with the anticorrosive agent added thereto, the anticorrosive agent often forms complexes with Cu, which remain as foreign matter on a wafer in large quantity, leading to a reduction in yield, and in reliability of TDDB characteristics of the Cu wiring. In the invention of the present application, a post-CMP cleaning process involves applying wet cleaning to a wafer by supplying a cleaning solution, such as a chemical solution or pure water, to a device surface of the wafer substantially in a vertical direction with respect to the horizontal device surface, while rotating the wafer substantially about its center in the horizontal plane. The rotation speed of the wafer is set low such that the thickness of the cleaning solution over the entire device surface becomes substantially uniform.
    • 应用于130nm,90nm和65nm技术节点等的处理的Cu-CMP步骤主要采用添加有防腐蚀剂以防止Cu布线腐蚀的浆料。 本申请的发明人已经研究并清楚地发现,在使用添加了防锈剂的浆料的Cu-CMP步骤中,防腐剂通常与Cu形成复合物,Cu与大量的晶片上留下异物,导致 降低产量,并且在Cu布线的TDDB特性的可靠性方面。 在本申请的发明中,后CMP清洗工艺涉及通过向晶片的装置表面提供基本上沿垂直方向的清洁溶液(例如化学溶液或纯水)向晶片施加湿清洗 同时使晶片基本上绕其水平面的中心旋转。 将晶片的旋转速度设定得较低,使得整个器件表面上的清洁溶液的厚度变得基本均匀。
    • 4. 发明申请
    • MANUFACTURING METHOD FOR SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
    • 半导体集成电路器件的制造方法
    • US20090286392A1
    • 2009-11-19
    • US12411387
    • 2009-03-25
    • Hiroyuki MasudaHiroshi OshitaNobuhiro Konishi
    • Hiroyuki MasudaHiroshi OshitaNobuhiro Konishi
    • H01L21/768
    • H01L21/02074H01L21/67046H01L21/67051H01L21/67219H01L21/67745H01L21/76808H01L21/76832H01L21/76834H01L2221/1036
    • A Cu-CMP step applied to processes for 130 nm, 90 nm, and 65 nm technical nodes or the like mainly employs slurry to which an anticorrosive agent is added for preventing corrosion of Cu wiring. The inventors of the present application have studied and clearly found that in the Cu-CMP step using the slurry with the anticorrosive agent added thereto, the anticorrosive agent often forms complexes with Cu, which remain as foreign matter on a wafer in large quantity, leading to a reduction in yield, and in reliability of TDDB characteristics of the Cu wiring. In the invention of the present application, a post-CMP cleaning process involves applying wet cleaning to a wafer by supplying a cleaning solution, such as a chemical solution or pure water, to a device surface of the wafer substantially in a vertical direction with respect to the horizontal device surface, while rotating the wafer substantially about its center in the horizontal plane. The rotation speed of the wafer is set low such that the thickness of the cleaning solution over the entire device surface becomes substantially uniform.
    • 应用于130nm,90nm和65nm技术节点等的处理的Cu-CMP步骤主要采用添加有防腐蚀剂以防止Cu布线腐蚀的浆料。 本申请的发明人已经研究并清楚地发现,在使用添加有防锈剂的浆料的Cu-CMP步骤中,防腐剂通常与Cu大量形成与Cu大量的复合物,其作为异物留在晶片上,导致 降低产量,并且在Cu布线的TDDB特性的可靠性方面。 在本申请的发明中,后CMP清洗工艺涉及通过向晶片的装置表面提供基本上沿垂直方向的清洁溶液(例如化学溶液或纯水)向晶片施加湿清洗 同时使晶片基本上绕其水平面的中心旋转。 将晶片的旋转速度设定得较低,使得整个器件表面上的清洁溶液的厚度变得基本均匀。