Chemical mechanical polishing method
    1.
    发明授权
    Chemical mechanical polishing method 有权
    化学机械抛光方法

    公开(公告)号:US07223697B2

    公开(公告)日:2007-05-29

    申请号:US10710604

    申请日:2004-07-23

    IPC分类号: H01L21/302

    CPC分类号: H01L27/10867 H01L21/3212

    摘要: A method of forming a structure, an array of structures and a memory cell, the method of fabricating a structure, including: (a) forming a trench in a substrate; (b) depositing a first layer of polysilicon on a surface of the substrate, the first layer of polysilicon filling the trench; (c) chemical-mechanical-polishing the first layer of polysilicon at a first temperature to expose the surface of the substrate; (d) removing an upper portion of the first polysilicon from the trench; (e) depositing a second layer of polysilicon on the surface of the substrate, the second layer of polysilicon filling the trench; and (f) chemical-mechanical-polishing the second layer of polysilicon at a second temperature to expose the surface of the substrate, the second temperature different from the first temperature.

    摘要翻译: 一种形成结构,结构阵列和存储单元的方法,制造结构的方法,包括:(a)在衬底中形成沟槽; (b)在所述衬底的表面上沉积第一层多晶硅,所述第一层多晶硅填充所述沟槽; (c)在第一温度下化学机械抛光所述第一层多晶硅以暴露​​所述衬底的表面; (d)从沟槽去除第一多晶硅的上部; (e)在所述衬底的表面上沉积第二层多晶硅,所述第二层多晶硅填充所述沟槽; 和(f)在第二温度下对所述第二层多晶硅进行化学机械抛光以暴露所述衬底的表面,所述第二温度不同于所述第一温度。