DRY-ETCH SELECTIVITY
    3.
    发明申请
    DRY-ETCH SELECTIVITY 审中-公开
    干燥选择性

    公开(公告)号:US20150132968A1

    公开(公告)日:2015-05-14

    申请号:US14602835

    申请日:2015-01-22

    IPC分类号: H01L21/311

    CPC分类号: H01L21/31116 H01J37/32357

    摘要: A method of etching exposed patterned heterogeneous structures is described and includes a remote plasma etch formed from a reactive precursor. The plasma power is pulsed rather than left on continuously. Plasma effluents from the remote plasma are flowed into a substrate processing region where the plasma effluents selectively remove one material faster than another. The etch selectivity results from the pulsing of the plasma power to the remote plasma region, which has been found to suppress the number of ionically-charged species that reach the substrate. The etch selectivity may also result from the presence of an ion suppression element positioned between a portion of the remote plasma and the substrate processing region.

    摘要翻译: 描述了蚀刻暴露的图案化异质结构的方法,并且包括由反应性前体形成的远程等离子体蚀刻。 等离子体功率是脉冲的,而不是连续地保持。 来自远程等离子体的等离子体流出物流入衬底处理区域,其中等离子体流出物选择性地比另一种更快地去除一种材料。 蚀刻选择性是由等离子体功率脉冲到远程等离子体区域而产生的,这已被发现抑制了到达衬底的离子充电物质的数量。 蚀刻选择性也可能由位于远程等离子体的一部分与基板处理区域之间的离子抑制元件的存在引起。

    Pedestal with multi-zone temperature control and multiple purge capabilities

    公开(公告)号:US10062587B2

    公开(公告)日:2018-08-28

    申请号:US14996621

    申请日:2016-01-15

    IPC分类号: B23Q3/00 H01L21/67 F28D15/00

    摘要: Substrate support assemblies for a semiconductor processing apparatus are described. The assemblies may include a pedestal and a stem coupled with the pedestal. The pedestal may be configured to provide multiple regions having independently controlled temperatures. Each region may include a fluid channel to provide a substantially uniform temperature control within the region, by circulating a temperature controlled fluid that is received from and delivered to internal channels in the stem. The fluid channels may include multiple portions configured in a parallel-reverse flow arrangement. The pedestal may also include fluid purge channels that may be configured to provide thermal isolation between the regions of the pedestal.