Bimodal slurry system
    2.
    发明授权
    Bimodal slurry system 有权
    双峰浆体系

    公开(公告)号:US06638328B1

    公开(公告)日:2003-10-28

    申请号:US10132441

    申请日:2002-04-25

    IPC分类号: C09G102

    摘要: A bimodal slurry system for a chemical mechanical polishing process including a dispersion comprising a plurality of first particles and a plurality of at least one type of second particles said first particles having a mean particle diameter larger by at least a factor of 3 than a mean particle diameter of the at least one type of second particles said first particles further being compressible.

    摘要翻译: 一种用于化学机械抛光方法的双峰淤浆系统,包括分散体,其包含多个第一颗粒和多个至少一种第二颗粒,所述第一颗粒的平均粒径比平均颗粒大至少3倍 所述至少一种类型的第二颗粒的​​直径,所述第一颗粒进一步是可压缩的。

    Dual damascene patterned conductor layer formation method without etch
stop layer

    公开(公告)号:US6004883A

    公开(公告)日:1999-12-21

    申请号:US177186

    申请日:1998-10-23

    IPC分类号: H01L21/768 H01L21/30

    摘要: A method for forming a via through a dielectric layer within a microelectronics fabrication. There is first provided a substrate employed within a microelectronics fabrication. There is then formed upon the substrate a patterned first dielectric layer which defines a via accessing a contact region formed within the substrate. The patterned first dielectric layer is formed of a first dielectric material which is not susceptible to etching with an oxygen containing plasma. There is then formed upon the patterned first dielectric layer a blanket second dielectric layer which completely covers the patterned first dielectric layer and fills the via. The blanket second dielectric layer is formed of a second dielectric material which is susceptible to etching within the oxygen containing plasma. There is then formed upon the blanket second dielectric layer a blanket hard mask layer which is formed from a hard mask material which is not susceptible to etching within the oxygen containing plasma. There is then formed upon the blanket hard mask layer a patterned photoresist layer which leaves exposed a portion of the blanket hard mask layer greater that an areal dimension of the via and at least partially overlapping the areal dimension of the via. There is then etched while employing a first plasma etch method the blanket hard mask layer to form a patterned hard mask layer defining a first trench formed through the patterned hard mask layer while employing the patterned photoresist layer as a first etch mask layer. The first plasma etch method employs a first etchant gas composition appropriate to the hard mask material from which is formed the blanket hard mask layer. Finally, there is then etched while employing a second plasma etch method the blanket second dielectric layer to form a patterned second dielectric layer having an aperture formed therethrough. The aperture comprises: (1) a second trench corresponding with the first trench; and (2) at least a portion of the first via. The second plasma etch method employs the oxygen containing plasma.