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    • 4. 发明授权
    • Thickness measuring apparatus, substrate processing method, and substrate processing apparatus
    • 厚度测量装置,基板处理方法和基板处理装置
    • US06331890B1
    • 2001-12-18
    • US09474126
    • 1999-12-29
    • Yoshinori MarumoTeruyuki Hayashi
    • Yoshinori MarumoTeruyuki Hayashi
    • G01J400
    • G01B11/0683
    • A film thickness measuring apparatus is provided with a housing which is made up of a base plate and outer cases, and which substantially shuts off the internal region thereof from the outside air, an introduction stage on which a cassette C is mounted, the cassette containing a plurality of substrates which have thin films formed thereon, a measurement stage which is arranged inside the housing and on which the substrate is placed for measuring the film thickness of the thin film, and a conveyance mechanism, arranged inside the housing, for moving the substrates between the inside of the cassette and the measurement stage. A film thickness measuring mechanism is arranged inside the housing. The film thickness measuring mechanism comprises a light emitting mechanism and a detector. The light emitting mechanism includes a laser light source for emitting a laser beam to the thin film on a wafer placed on the measurement stage. The detector detects light reflected from the thin film. On the basis of the information detected by the detector, the film thickness measuring mechanism measures the thickness of the thin film in a non-contact manner. A filter unit is arranged in the housing and located above the measurement stage. Through this filter unit, pure air free of gaseous organic matter is supplied and guided to the region above the measurement stage.
    • 薄膜厚度测量装置设置有由基板和外壳组成的壳体,其基本上从外部空气中切断其内部区域,安装盒C的导入台,所述盒体包含 在其上形成有薄膜的多个基板,布置在壳体内部并且放置基板以测量薄膜的膜厚度的测量台,以及布置在壳体内部的用于移动 盒子内部和测量台之间的衬底。 膜厚测量机构设置在壳体内。 膜厚测量机构包括发光机构和检测器。 发光机构包括用于在放置在测量台上的晶片上向激光束发射激光的激光光源。 检测器检测从薄膜反射的光。 基于由检测器检测到的信息,膜厚测量机构以非接触的方式测量薄膜的厚度。 过滤器单元布置在壳体中并位于测量台的上方。 通过该过滤器单元,将不含气态有机物的纯空气供给并引导到测量台上方的区域。