Chemical vapor deposition system including dedicated cleaning gas injection
    9.
    发明授权
    Chemical vapor deposition system including dedicated cleaning gas injection 失效
    化学气相沉积系统包括专用清洗气体注入

    公开(公告)号:US06200412B1

    公开(公告)日:2001-03-13

    申请号:US08602641

    申请日:1996-02-16

    IPC分类号: B65C326

    摘要: A plasma-enhanced chemical vapor deposition system includes a number of process gas injection tubes and at least one dedicated clean gas injection tube. A plasma is used to periodically clean the interior surfaces of the deposition chamber. The cleaning is made more rapid and effective by introducing the clean gas through the dedicated clean gas injection tube. In this manner the clean gas can be introduced at a relatively high flow rate without detracting from the cleaning of the interior surfaces of the process gas injection tubes. As a separate aspect of this invention, a high-frequency signal is applied to both terminals of the coil during the cleaning process. This produces a plasma, mainly by capacitive coupling, which has a shape and uniformity that are well-suited to cleaning the surfaces of the deposition chamber.

    摘要翻译: 等离子体增强化学气相沉积系统包括多个工艺气体注入管和至少一个专用清洁气体注入管。 使用等离子体来周期性地清洁沉积室的内表面。 通过引入清洁气体通过专用的清洁气体注入管,清洁更加快速和有效。 以这种方式,可以以相对较高的流速引入清洁气体,而不会降低工艺气体注入管的内表面的清洁。 作为本发明的另一方面,在清洁过程中将高频信号施加到线圈的两个端子。 这产生主要通过电容耦合的等离子体,其具有非常适合于清洁沉积室的表面的形状和均匀性。