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    • 27. 发明授权
    • Substrate processing method and apparatus and SOI substrate
    • 基板加工方法及装置及SOI基板
    • US06428620B1
    • 2002-08-06
    • US09680376
    • 2000-10-05
    • Kenji YamagataKiyofumi Sakaguchi
    • Kenji YamagataKiyofumi Sakaguchi
    • C30B2516
    • H01L21/0203C25D11/32H01L21/2007H01L21/76259Y10S438/96Y10S438/977
    • An object of this invention is to provide a substrate processing method capable of satisfactorily performing in etching in the step of removing a porous silicon layer by etching. In order to achieve this object, a substrate processing method includes the anodizing step of forming a porous silicon layer on a major surface of a single-crystal silicon substrate, the silicon film formation step of growing a single-crystal silicon film on the porous silicon layer, the removal step of bonding a first substrate obtained by oxidizing a surface of the single-crystal silicon film to a second substrate as a supporting substrate, and removing a single-crystal silicon portion from a lower surface side of the first substrate to expose the porous silicon layer, and the etching step of etching the exposed porous silicon layer to remove the porous silicon layer on the single-crystal silicon film, wherein in washing after the anodizing step, a time in which the first substrate is removed from the electrolytic solution and exposed to the air until washing is limited to a range in which the porous silicon layer is prevented from remaining on the single-crystal silicon film in the etching step.
    • 本发明的目的是提供一种在通过蚀刻去除多孔硅层的步骤中能够令人满意地进行蚀刻的基板处理方法。 为了实现该目的,基板处理方法包括在单晶硅基板的主表面上形成多孔硅层的阳极氧化步骤,在多孔硅上生长单晶硅膜的硅膜形成步骤 层,将通过将单晶硅膜的表面氧化的第一基板接合到作为支撑基板的第二基板的去除步骤,以及从第一基板的下表面侧去除单晶硅部分,以暴露 多孔硅层,以及蚀刻暴露的多孔硅层以去除单晶硅膜上的多孔硅层的蚀刻步骤,其中在阳极氧化步骤之后的洗涤中,将第一基底从电解液中除去的时间 溶液并暴露于空气中,直到洗涤被限制在其中防止多孔硅层残留在单晶硅膜上的范围内 蚀刻步骤。
    • 30. 发明授权
    • Wafer bonding method, apparatus and vacuum chuck
    • 晶圆接合方法,设备和真空吸盘
    • US06383890B2
    • 2002-05-07
    • US09211875
    • 1998-12-15
    • Toru TakisawaTakao YoneharaKenji Yamagata
    • Toru TakisawaTakao YoneharaKenji Yamagata
    • H01L2130
    • H01L21/67092H01L21/6838
    • Two wafers are properly brought into contact with each other. The first wafer is supported by a wafer support table (3) having an annular peripheral portion (3d). The substrate support table (3) is in contact with only the peripheral portion (3d) of the first wafer. While the second wafer opposing the first wafer is supported, the lower surface of the second wafer is pressed near its central portion, so the first and second wafers come into contact with each other outward from the central portion. The central portion (3c) of the wafer support table (3) is not in contact with the first wafer. Even when particles adhere to the central portion, unevenness on the supported first wafer can be prevented. Therefore, no gas is left between the wafers. This invention also provides a wafer support table formed by fabricating a silicon wafer. A commercially available silicon wafer is fabricated by lithography to prepare a wafer support table (31). The wafer support table (31) has sealing portions (31a, 31b) and deflection prevention portions (31c). The wafer to be supported is chucked by reducing the pressure between the sealing portions (31a, 31b). The wafer to be supported is in contact only with the sealing portions (31a, 31b) and the deflection prevention portions (31c)
    • 两个晶片正确地相互接触。 第一晶片由具有环形周边部分(3d)的晶片支撑台(3)支撑。 基板支撑台(3)仅与第一晶片的周边部分(3d)接触。 当与第一晶片相对的第二晶片被支撑时,第二晶片的下表面被压在其中心部分附近,因此第一和第二晶片从中心部分向外接触。 晶片支撑台(3)的中心部分(3c)不与第一晶片接触。 即使当颗粒粘附到中心部分时,也可以防止被支撑的第一晶片上的不均匀。 因此,晶片之间没有气体留下。 本发明还提供了通过制造硅晶片形成的晶片支撑台。 通过光刻制造市售硅晶片以制备晶片支撑台(31)。 晶片支撑台(31)具有密封部(31a,31b)和偏转防止部(31c)。 通过减小密封部(31a,31b)之间的压力来夹持待支撑的晶片。 待支撑的晶片仅与密封部分(31a,31b)和偏转防止部分(31c)接触,