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    • 2. 发明授权
    • Bubble ultrasonic flow meter
    • 泡泡超声波流量计
    • US06516675B1
    • 2003-02-11
    • US10053180
    • 2002-01-15
    • Chin-Tsan JanChen-Chia Chiu
    • Chin-Tsan JanChen-Chia Chiu
    • G01F144
    • G01F1/662
    • A method and apparatus for preventing flow rate errors derived from an ultrasonic flow meter utilized in semiconductor fabrication operations. The ultrasonic flow meter is generally configured to include an extension chamber connected to a thin branch tube of the ultrasonic flow meter. A venturi tube can be positioned at an outflow location of the ultrasonic flow meter, such that the thin branch tube is broached into the venturi tube, wherein bubbles contained in a slurry flow are forced directly into the outflow location to thereby prevent inaccurate flow measurements derived from the ultrasonic flow meter. The extension chamber may be configured to reduce an inflow velocity associated with the slurry slow and ensure that the bubbles with not drift with the slurry flow. Additionally, a diameter of the branch tube may be configured such that the diameter is much smaller than a diameter associated with an inflow and/or outflow tube of the ultrasonic flow meter.
    • 一种用于防止从半导体制造操作中使用的超声波流量计得到的流量误差的方法和装置。 超声波流量计通常被配置为包括连接到超声波流量计的薄分支管的延伸室。 文丘里管可以位于超声波流量计的流出位置处,使得细分支管被拉入文丘里管,其中包含在浆液流中的气泡被迫直接进入流出位置,从而防止不精确的流量测量得到 从超声波流量计。 延伸室可以被配置为减少与浆料相关的进入速度慢,并且确保随着浆料流动而不漂移的气泡。 此外,分支管的直径可以被配置成使得直径远小于与超声波流量计的流入和/或流出管相关联的直径。
    • 3. 发明授权
    • Apparatus and method for calibrating a polishing head
    • 用于校准抛光头的装置和方法
    • US6068544A
    • 2000-05-30
    • US323343
    • 1999-06-01
    • Chen-Chia ChiuFang-Lin LuKuo-Pao YehYu-Sheng Shen
    • Chen-Chia ChiuFang-Lin LuKuo-Pao YehYu-Sheng Shen
    • B24B37/34B24B41/047B24B7/00
    • B24B37/345B24B41/047
    • An apparatus for calibrating the centering of polishing heads in a polishing machine that is equipped with a plurality of spindles onto which polishing heads are mounted and a method for using such apparatus are disclosed. In the apparatus, a calibration disc is provided which has a hollow shaft mounted at a center of the bottom surface of the disc. A centering pin slidingly engaging an elongated cavity in the hollow shaft such that its protruded tip portion may be adjusted by using a locking device such as a set screw for different calibration procedures. The present invention novel apparatus can be used to calibrate the positioning of a polishing head mounted in a spindle with a pedestal in a load cup that is equipped with a center alignment aperture. The calibration can be conducted not only in the X, Y direction (or in the circumferential direction) of the spindle movement, but also in the Z direction (or a sweep direction) of the traversing spindle that occurs during a polishing operation.
    • 公开了一种用于校准抛光机中心的装置,该抛光机配备有多个主轴,抛光头安装在抛光机上,以及使用该装置的方法。 在该装置中,提供了一个校准盘,其具有安装在盘的底表面的中心处的中空轴。 定心销可滑动地接合空心轴中的细长空腔,使得其突出的末端部分可以通过使用诸如用于不同校准程序的固定螺钉的锁定装置来调节。 本发明新颖的装置可用于校准安装在具有基座的主轴中的抛光头在装配有中心对准孔的装载杯中的定位。 校准不仅可以在主轴移动的X,Y方向(或圆周方向)上进行,而且可以在抛光操作期间发生的横动主轴的Z方向(或扫掠方向)进行。