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    • 3. 发明申请
    • APPARATUS AND METHOD FOR INVESTIGATING SEMICONDUCTOR WAFERS
    • 用于研究半导体晶片的装置和方法
    • WO0203449A3
    • 2002-06-06
    • PCT/GB0102926
    • 2001-06-29
    • METRYX LTDWILBY ROBERT JOHN
    • WILBY ROBERT JOHN
    • G01G9/00G01R31/26H01L21/66G01G17/00
    • G01G9/00G01R31/2648H01L22/12
    • In order to determine the dielectric constant of a layer deposited on a semiconducotr wafer (2), the density of the layer is obtained. To obtain that density, the wafer (2) without the layer is weighed in a weighing chamber (4) in which a weighing pan (7) supports the wafer on a weighing balance. The weight of the wafer is determined taking into account the buoyancy exerted by the air on the wafer (2). Then the layer is deposited on the wafer (2) and the weighing operation repeated. Alternatively a reference wafer may be used. If the material of the layer is known, the weight of the layer can be used to derive its density using a thickness measurement. Alternatively, if the density is known, the thickness can be obtained.
    • 为了确定沉积在半导体晶片(2)上的层的介电常数,获得该层的密度。 为了获得该密度,在称量室(4)中称量没有该层的晶片(2),称量盘(7)在该称量室(7)上将晶片支撑在称重天平上。 在考虑到晶片(2)上的空气所施加的浮力的情况下确定晶片的重量。 然后将该层沉积在晶片(2)上并重复称量操作。 或者可以使用参考晶片。 如果该层的材料是已知的,则可以使用厚度测量来使用该层的重量来导出其密度。 或者,如果密度已知,则可以获得厚度。