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    • 23. 发明授权
    • Plasma density measuring method and apparatus, and plasma processing system using the same
    • 等离子体密度测量方法和装置,以及使用其的等离子体处理系统
    • US06541982B2
    • 2003-04-01
    • US09760667
    • 2001-01-17
    • Hideo KitagawaNobumasa Suzuki
    • Hideo KitagawaNobumasa Suzuki
    • G01N2762
    • G01R19/0061H05H1/0062
    • A plasma density measuring method which includes producing a surface wave at an interface between a dielectric member and a plasma, and measuring at least one of a plasma density and a relative change in plasma density, on the basis of the surface wave. A plasma processing system including a container having a window, and for storing therein a gas introduced thereinto, a dielectric member for closing the window of the container, a plasma voltage source for applying a high frequency voltage through the dielectric member to produce a plasma by use of the gas inside the container, wherein a predetermined process is performed by use of the thus produced plasma, a detecting system for detecting an electric field intensity distribution of a surface wave propagated through the dielectric member, and a feedback system for feeding back the result of detection by the detecting system, to determine a processing condition for the process.
    • 一种等离子体密度测量方法,其包括在介电构件和等离子体之间的界面处产生表面波,并且基于表面波测量等离子体密度和等离子体密度的相对变化中的至少一个。 一种等离子体处理系统,包括具有窗口的容器,并且其中存储有引入其中的气体,用于封闭容器窗口的电介质构件,用于通过电介质构件施加高频电压以产生等离子体的等离子体电压源 使用容器内部的气体,其中通过使用由此产生的等离子体执行预定处理,用于检测通过电介质构件传播的表面波的电场强度分布的检测系统,以及用于反馈 由检测系统检测的结果,以确定该过程的处理条件。
    • 30. 发明授权
    • Process for producing semiconductor device
    • 半导体器件的制造方法
    • US06426302B2
    • 2002-07-30
    • US09778943
    • 2001-02-08
    • Hideo Kitagawa
    • Hideo Kitagawa
    • H01L21302
    • H01J37/32357H01J37/32422
    • A plasma processing apparatus having a vacuum vessel and a supporting means for supporting a processing target in the vacuum vessel, the apparatus comprising means for introducing a gas into a plasma generating space, means for feeding electric energy to the gas in the plasma generating space to generate a plasma, a metal member for forming negative ions which is provided on the downstream side of the plasma generating space in such a way that it comes into contact with particles of the plasma, and means for feeding the negative ions to the processing target. Utilizing the electric charge exchange reaction between plasma particles and metal surfaces, negative ions can be formed continuously and in a high density and also the negative ions can be made incident on a processing target to make ashing, etching or cleaning of the processing target to remove unwanted matter therefrom, so that a high processing rate and less charge-up damage can be achieved.
    • 一种等离子体处理装置,其具有真空容器和用于在真空容器内支撑加工对象的支撑装置,该装置包括用于将气体引入等离子体产生空间的装置,用于将电能馈送到等离子体产生空间中的气体的装置 产生等离子体,用于形成负离子的金属构件,其以与等离子体的粒子接触的方式设置在等离子体产生空间的下游侧,以及用于将负离子供给到处理对象的装置。 利用等离子体颗粒和金属表面之间的电荷交换反应,可以连续地和高密度地形成负离子,并且还可以使负离子入射到处理对象上,以使加工对象的灰化,蚀刻或清洁以去除 从而可以实现高处理速率和较少的充电损伤。