Selective etching process
    3.
    发明授权
    Selective etching process 失效
    选择性蚀刻工艺

    公开(公告)号:US4871420A

    公开(公告)日:1989-10-03

    申请号:US150490

    申请日:1988-02-10

    IPC分类号: H01L21/3065 H01L21/3213

    CPC分类号: H01L21/32137 H01L21/3065

    摘要: By adjusting the AC field conditions, i.e., by grounding the environment of a substrate being etched with a chlorine-containing plasma, a significant increase in etch selectivity is achieved. By applying a similar AC field adjustment to the reaction chamber surfaces, excellent etch uniformity is achieved in conjunction with excellent selectivity.

    摘要翻译: 通过调整AC场条件,即通过用含氯等离子体接地被蚀刻的衬底的环境来实现蚀刻选择性的显着增加。 通过对反应室表面施加类似的AC场调整,结合优异的选择性实现了优异的蚀刻均匀性。

    Slurry-less chemical-mechanical polishing of oxide materials
    4.
    发明授权
    Slurry-less chemical-mechanical polishing of oxide materials 失效
    无机化学机械抛光氧化物材料

    公开(公告)号:US06358850B1

    公开(公告)日:2002-03-19

    申请号:US09471428

    申请日:1999-12-23

    IPC分类号: H01L21302

    摘要: The invention provides slurry-less chemical-mechanical polishing processes which are effective in planarizing oxide materials, especially siliceous oxides, even where the starting oxide layer has significant topographical variation. The processes of the invention are characterized by the use of a fixed abrasive polishing element and by use of an aqueous liquid medium containing a cationic surfactant for at least a portion of the polishing process involving reduction in the amount of topographic variation (height differential) across the oxide material on the substrate. The method reduces or eliminates the transfer of topographic variations to levels below the desired planarization level.

    摘要翻译: 本发明提供无浆化学机械抛光方法,其有效平坦化氧化物材料,特别是硅氧化物,即使起始氧化物层具有显着的形貌变化。 本发明的方法的特征在于使用固定的研磨抛光元件,并且通过使用含有阳离子表面活性剂的含水液体介质,用于抛光过程的至少一部分,包括减少跨越的地形变化量(高差) 衬底上的氧化物材料。 该方法减少或消除了地形变化的转移到低于期望的平坦化水平的水平。

    Method for reliability testing integrated circuit metal films
    8.
    发明授权
    Method for reliability testing integrated circuit metal films 失效
    集成电路金属膜可靠性测试方法

    公开(公告)号:US5057441A

    公开(公告)日:1991-10-15

    申请号:US605043

    申请日:1990-10-29

    IPC分类号: G01R31/27 G01R31/28 H01L21/66

    摘要: Disclosed is a method for manufacturing an integrated circuit which includes the step of evaluating the reliability of metal films in the circuit using a noise measurement technique. In one embodiment, a film portion to be tested is incorporated in a Wheatstone bridge. A relatively large direct current is passed through the film to stimulate 1/f.sup.2 noise. A relatively small alternating current is concurrently passed through the film. The bridge imbalance signal at the ac frequency is amplified and demodulated by a phase-locked amplifier, and is then frequency analyzed. The film is evaluated by comparing the resulting noise power spectrum with predetermined standards.

    摘要翻译: 公开了一种用于制造集成电路的方法,其包括使用噪声测量技术评估电路中的金属膜的可靠性的步骤。 在一个实施例中,待测试的膜部分被并入惠斯通电桥。 相对较大的直流电流通过该膜以刺激1 / f2噪声。 相对小的交流电流同时通过薄膜。 交流频率下的桥不平衡信号被锁相放大器放大和解调,然后进行频率分析。 通过将得到的噪声功率谱与预定标准进行比较来评估该膜。

    Interferometric methods and apparatus for device fabrication
    10.
    发明授权
    Interferometric methods and apparatus for device fabrication 失效
    用于器件制造的干涉测量方法和装置

    公开(公告)号:US4680084A

    公开(公告)日:1987-07-14

    申请号:US642931

    申请日:1984-08-21

    CPC分类号: G01B11/0683

    摘要: The invention involves new etch monitoring and thickness measurement techniques which are more accurate than previous techniques. In accordance with the invention, the etch depth of a substrate region undergoing etching is monitored, or the thickness of the region is measured, by impinging the region with light and detecting the intensity of the reflected light. In contrast to the previous techniques, the incident light is chosen so that a substrate region underlying, and/or a patterned substrate region overlying the substrate region of interest is substantially opaque to the incident light, which precludes the formation of signals unrelated to etch depth or thickness.

    摘要翻译: 本发明涉及新的蚀刻监测和厚度测量技术,其比先前技术更准确。 根据本发明,通过用光照射该区域并检测反射光的强度来监测进行蚀刻的衬底区域的蚀刻深度,或者测量该区域的厚度。 与之前的技术相反,入射光被选择为使得覆盖在感兴趣的衬底区域上的衬底区域和/或图案化衬底区域对于入射光基本上是不透明的,这排除了与蚀刻深度无关的信号的形成 或厚度。