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    • 10. 发明授权
    • Polishing process for use in method of fabricating semiconductor device
    • 用于制造半导体器件的方法的抛光工艺
    • US06443807B1
    • 2002-09-03
    • US09702673
    • 2000-11-01
    • Tetsuya SakaiYasuaki Tsuchiya
    • Tetsuya SakaiYasuaki Tsuchiya
    • B24B100
    • B24B37/24B24D3/22H01L21/31053H01L21/3212
    • First, in a primary polishing step, a substrate is brought into close contact with a first pad including abrasives and made of a hard material, and the first pad is rotated while a first solution containing no abrasive is supplied onto the first pad to polish a surface of the substrate. In the primary polishing step, since the first solution contains no abrasive and the first pad is hard, polishing is performed with high flatness and extremely less dishing and erosion. Next, in a secondary polishing step, the substrate is brought into close contact with a second pad including no abrasive and made of a soft material, and the second pad is rotated while a second solution containing abrasives is supplied onto the second pad to polish the surface of the substrate. In the secondary polishing step, since the second solution contains the abrasives and the second pad is soft, scratches produced in the primary polishing step are reduced.
    • 首先,在一次抛光步骤中,将衬底与包括磨料的第一衬垫紧密接触并由硬质材料制成,并且第一衬垫旋转,而不含磨料的第一溶液被供应到第一衬垫上以抛光 基板的表面。 在一次抛光步骤中,由于第一溶液不含研磨剂,并且第一填料是硬的,所以以高的平整度和极少的凹陷和侵蚀进行抛光。 接下来,在二次抛光步骤中,使衬底与不含研磨剂的第二衬垫紧密接触并由软材料制成,并且第二衬垫旋转,同时将含有磨料的第二溶液供应到第二衬垫上以抛光 基板的表面。 在二次抛光步骤中,由于第二溶液含有研磨剂,并且第二垫是柔软的,所以在一次抛光步骤中产生的划痕减小。