Method for controlling etch process repeatability
    1.
    发明授权
    Method for controlling etch process repeatability 有权
    控制蚀刻工艺重复性的方法

    公开(公告)号:US07078312B1

    公开(公告)日:2006-07-18

    申请号:US10654113

    申请日:2003-09-02

    IPC分类号: H01L21/76

    摘要: Plasma etch processes incorporating etch chemistries which include hydrogen. In particular, high density plasma chemical vapor deposition-etch-deposition processes incorporating etch chemistries which include hydrogen that can effectively fill high aspect ratio (typically at least 3:1, for example 6:1, and up to 10:1 or higher), narrow width (typically sub 0.13 micron, for example 0.1 micron or less) gaps while reducing or eliminating chamber loading and redeposition and improving wafer-to-wafer uniformity relative to conventional deposition-etch-deposition processes which do not incorporate hydrogen in their etch chemistries.

    摘要翻译: 包括蚀刻化学的等离子体蚀刻工艺,其中包括氢。 特别地,结合蚀刻化学的高密度等离子体化学气相沉积 - 蚀刻沉积方法,其包括可以有效地填充高纵横比(通常至少3:1,例如6:1,最多10:1或更高)的氢, ,窄宽度(通常为0.13微米,例如0.1微米或更小)的间隙,同时相对于在其蚀刻中不掺入氢的常规沉积 - 蚀刻沉积工艺,减少或消除了室的负载和再沉积,并且提高了晶片到晶片的均匀性 化学品。

    Plasma torch preventing gas backflows into the torch
    7.
    发明授权
    Plasma torch preventing gas backflows into the torch 失效
    等离子火炬防止气体回流到割炬

    公开(公告)号:US06452129B1

    公开(公告)日:2002-09-17

    申请号:US09717487

    申请日:2000-11-20

    IPC分类号: B23K1000

    摘要: A plasma arc torch is disclosed which has an elongated electrode with an open front and a nozzle with a plasma discharge opening that is coaxial with the electrode. A mounting arrangement includes a ceramic ring that engages the front end of the electrode and a gas ring which concentrically surrounds the ceramic ring. A forward portion of the gas ring, the forward end of the electrode, and the nozzle define a swirl chamber of the torch, and opposing, spaced-apart concentric cylindrical surfaces of the ceramic ring and the gas ring, respectively, form an annulus which extends rearwardly from the swirl chamber. The ceramic ring closes the aft end of the annulus, and the gas ring houses a plurality of plasma gas injection ports which are located immediately forward of the aft end of the annulus. The entire plasma gas for the torch flows from the injection ports generally tangentially into the annulus to prevent a recirculation of gas into the annulus and to impart rotation to the gas after it leaves the ports and as it propagates towards the swirl chamber. The annulus is sufficiently long so that the injected gas spirals through about 5-20 revolutions before it enters the swirl chamber as a substantially uniform, single mass gas flow.

    摘要翻译: 公开了一种等离子弧焊炬,其具有带有开口前部的细长电极和具有与电极同轴的等离子体放电开口的喷嘴。 安装装置包括接合电极前端的陶瓷环和同心地围绕陶瓷环的气环。 气体环的前部,电极的前端和喷嘴限定了割炬的旋转室,并且陶瓷环和气体环的相对的间隔开的同心圆柱形表面分别形成环形, 从漩涡室向后延伸。 陶瓷环关闭环形空间的后端,并且气环容纳多个等离子体气体注入口,这些等离子体气体注入口紧邻环形空间的后端的前方。 用于割炬的整个等离子体气体从喷射口大致切向地流入环形空间,以防止气体再循环到环形空间中,并且在气体离开端口之后并且当其朝向涡流室传播时,赋予气体旋转。 环形空间足够长,使得注入的气体在进入涡流室之前以大约5-20转的速度螺旋形成大致均匀的单质量气体流。