Chemical mechanical polishing of dual orientation polycrystalline materials
    1.
    发明授权
    Chemical mechanical polishing of dual orientation polycrystalline materials 失效
    双取向多晶材料的化学机械抛光

    公开(公告)号:US06899596B2

    公开(公告)日:2005-05-31

    申请号:US10121370

    申请日:2002-04-12

    CPC分类号: C09G1/02 B24B37/044

    摘要: A chemical mechanical polishing (CMP) process using a chemically active slurry having a polarity selected to affect the relative oxidation rates of respective crystalline planes of a polycrystalline surface being polished. The slurry polarity is controlled to equilibrate the material removal rates from the respective crystalline planes during the CMP process. A polar solute may be added to a base solvent to achieve the desired polarity. A CMP process for a tungsten film may utilize a water-based slurry containing an abrasive agent, an oxidizing agent, and a solute having a polarity less than that of water. The abrasive agent may be colloidal silica, the oxidizing agent may be hydrogen peroxide, and the solute may be benzene.

    摘要翻译: 使用具有极性的化学活性浆料的化学机械抛光(CMP)方法,其选择为影响被抛光的多晶表面的各个晶面的相对氧化速率。 控制浆料极性以在CMP过程期间平衡来自相应结晶平面的材料去除速率。 可以将极性溶质加入到碱性溶剂中以获得所需的极性。 用于钨膜的CMP方法可以使用含有研磨剂,氧化剂和极性小于水的极性溶质的水基浆料。 研磨剂可以是胶体二氧化硅,氧化剂可以是过氧化氢,溶质可以是苯。