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    • 1. 发明授权
    • Polishing apparatus and polishing method
    • 抛光设备和抛光方法
    • US5904609A
    • 1999-05-18
    • US637433
    • 1996-04-25
    • Atsushi FukurodaYoshihiro ArimotoKo Nakamura
    • Atsushi FukurodaYoshihiro ArimotoKo Nakamura
    • B24B37/04G05B19/416B24B49/00
    • B24B37/005G05B19/4163G05B2219/45199G05B2219/45232G05B2219/49085
    • A polishing apparatus comprises a first surface plate for supporting a polishing object, a driving mechanism for rotating the first surface plate, a second surface plate arranged so as to oppose to the first surface plate, an abrasive cloth stuck to the second surface plate, a vibration detector attached to the first surface plate or the second surface plate for detecting vibration in polishing, a controlling portion for controlling polishing operation of the first surface plate and the second surface plate, and signal analyzing unit for analyzing vibration intensity detected by the a vibration detector through frequency analysis, integrating the vibration intensity relative to time, and transmitting a polishing stop signal to stop polishing operation of the first surface plate and the second surface plate to the controlling portion when variation in a resultant integral value relative to time is less than a first reference value or when the resultant integral value is less than a second reference value.
    • 抛光装置包括用于支撑抛光对象的第一表面板,用于旋转第一表面板的驱动机构,与第一表面板相对布置的第二表面板,粘附到第二表面板的研磨布, 振动检测器,附接到第一表面板或第二表面板,用于检测抛光中的振动;控制部分,用于控制第一表面板和第二表面板的抛光操作;以及信号分析单元,用于分析由振动检测的振动强度 检测器通过频率分析,相对于时间的振动强度积分,并且当所得到的积分值相对于时间的变化小于时,传递抛光停止信号以停止将第一表面板和第二表面板的抛光操作到控制部分 第一参考值或当所得积分值小于seco时 nd参考值。
    • 2. 发明授权
    • Method of and apparatus for manufacturing a semiconductor substrate
    • 用于制造半导体衬底的方法和装置
    • US5399233A
    • 1995-03-21
    • US969290
    • 1993-02-01
    • Maki MurazumiYoshihiro ArimotoAtsushi Fukuroda
    • Maki MurazumiYoshihiro ArimotoAtsushi Fukuroda
    • H01L21/304H01L21/306H01L21/762H01L27/12
    • H01L21/30625H01L21/76251Y10S438/959Y10S438/977
    • In a process of manufacturing a semiconductor substrate having a SOI (silicon on insulator) structure, grooves are formed in a silicon layer reduced in thickness to several microns so that the silicon layer is separated into island-like regions corresponding to a chip size or device regions, and a stopper having a thickness corresponding to a desired final thickness of the silicon layer is formed in the grooves. The silicon layer is scanned with a piece of polishing cloth which has an area larger than that of each island-like region but sufficiently smaller than that of silicon layer and which is attached to a pressing surface of the polishing jig, thereby polishing the silicon layer until the stopper is exposed. The thickness of the silicon layer is measured at a position such that the thickness of a portion thereof is measured immediately before the same portion is polished. The pressure applied to the polishing cloth or the rotational speed of the polishing jig is controlled on the basis of thickness data thereby obtained. The thickness of a silicon layer having a diameter of 6 inches was thereby reduced uniformly to 0.1 to 1 .mu.m.
    • PCT No.PCT / JP92 / 01586 Sec。 371日期:1993年2月1日 在制造具有SOI(绝缘体上硅)结构的半导体衬底的工艺中,在厚度减小到几微米的硅层中形成凹槽,因此, 硅层被分离成对应于芯片尺寸或器件区域的岛状区域,并且在沟槽中形成具有对应于硅层的期望最终厚度的厚度的塞子。 用一块抛光布扫描硅层,该抛光布的面积大于每个岛状区域的面积,但比硅层的面积大得多,并附着在抛光夹具的压制表面上,从而抛光硅层 直到塞子被暴露。 测量硅层的厚度,使其一部分的厚度在相同部分被抛光之前立即测量。 基于由此获得的厚度数据来控制施加到抛光布上的压力或抛光夹具的转速。 因此,直径为6英寸的硅层的厚度均匀地降低至0.1至1μm。