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    • 1. 发明授权
    • Apparatus and method for manufacturing semiconductor single crystals
    • 用于制造半导体单晶的装置和方法
    • US5938836A
    • 1999-08-17
    • US956434
    • 1997-10-23
    • Junsuke TomiokaHiroshi InagakiKatsura Yamamoto
    • Junsuke TomiokaHiroshi InagakiKatsura Yamamoto
    • C30B30/04C30B15/30H01L21/208C30B15/22
    • C30B15/305Y10S117/917Y10T117/1004
    • This invention provides an apparatus and a method for manufacturing semiconductor single crystals, which enable a steady process of pulling up high-quality single silicon crystals to be easily performed during the growing of silicon single crystals by the CZ method aided by applying a Cusp magnetic field. Three facing homopolar magnets (hereinafter referred to as magnet) 1, 2, and 3 arc disposed outside the single-crystal pulling up chamber. The magnet 3 is located at the same height as the free surface of the melt 6 stored in a quartz crucible as the free surface of the melt 6 stored in a quartz crucible 5. Furthermore, the strength of the magnets 3 is set to be weaker than that of the magnets 1 and 2. The flux lines of the magnets 3 substantially pass through the quartz crucible 5 in the horizontal direction. However, the flux lines of the magnet 3 do not reach the silicon single crystal 7 being pulled up. The flux lines perpendicular to the free surface of the melt 6 and the strength of the magnetic field near the growth boundary of the crystal are reduces. Thus, the amount of oxygen coming from the quartz crucible 5 and convection near the free surface of the melt 6, starting from the quartz crucible 5 toward the silicon single crystal, can be minimized.
    • 本发明提供一种用于制造半导体单晶的装置和方法,其能够通过CZ方法辅助通过应用Cusp磁场在C单独晶体生长期间提升高质量单晶硅的稳定过程 。 三面体上的单极磁体(以下称为磁体)1,2和3设置在单晶提拉室的外侧。 磁体3位于与石英坩埚5中储存的熔体6的熔融物6的自由表面相同的高度,作为储存在石英坩埚5中的熔体6的自由表面。此外,磁体3的强度设定得较弱 磁体3的磁通线在水平方向基本上通过石英坩埚5。 然而,磁体3的磁通线未到达上拉的单晶硅7。 垂直于熔体6的自由表面的磁通线和晶体生长边界附近的磁场的强度降低。 因此,可以使来自石英坩埚5的氧的量和从石英坩埚5向硅单晶开始的熔融物6的自由表面附近的对流最小化。
    • 2. 发明授权
    • Method for manufacturing single crystal
    • 单晶制造方法
    • US06179911B2
    • 2001-01-30
    • US09425019
    • 1999-10-25
    • Junsuke TomiokaHiroshi InagakiFumitaka Ishikawa
    • Junsuke TomiokaHiroshi InagakiFumitaka Ishikawa
    • C30B1520
    • C30B29/06C30B15/14Y10S117/917Y10T117/1068Y10T117/1072Y10T117/1088
    • This invention provides a method and a apparatus capable of manufacturing single crystals with an oxygen density of less than 12×1017 atoms/cm3 or less than 10×1017 atoms/cm3, and wherein the oxygen density of the single crystal produced is uniformly distributed along its longitudinal axis. The electrical power inputted into the main heater 6 surrounding the quartz crucible 4 and the top heater 9 shaped like a reverse frustrated cone and disposed above the quartz crucible 4, is controlled to keep the temperature of the melt 5 in a preset range during the process of pulling up the single crystal silicon 10. When combining the main heater 6 and the top heater 9, the heat emitted from the main heater 6 can be kept small, and the heat load on the quartz crucible 4 and the amount of oxygen released from the quartz crucible 4 and dissloved into melt 5 can be reduced. Therefore, a single crystal of low oxygen density and with uniformly distributed oxygen density along its longitudinal axis can be obtained. Furthermore, the single-crystal silicon 10 can be assigned a proper thermal history. In the above process, if a magnetic field is applied to the melt, then single crystals of much lower oxygen density can be obtained.
    • 本发明提供一种能够制造氧密度小于12×10 17原子/ cm 3或小于10×10 17原子/ cm 3的单晶的方法和装置,其中所制造的单晶的氧密度沿其纵向轴线均匀分布。 控制输入​​到围绕石英坩埚4的主加热器6的电力以及设置在石英坩埚4上方的倒塌锥体形状的顶部加热器9,以在熔融过程中将熔体5的温度保持在预设范围内 拉起单晶硅10.当组合主加热​​器6和顶部加热器9时,可以将从主加热器6发射的热量保持较小,并且石英坩埚4上的热负荷和从 可以减少石英坩埚4并且被分解成熔体5。 因此,可以获得具有低氧密度并沿着其纵轴具有均匀分布的氧密度的单晶。 此外,单晶硅10可以被赋予适当的热历史。 在上述过程中,如果对熔体施加磁场,则可以获得低得多的氧密度的单晶。
    • 4. 发明授权
    • Apparatus for pulling up single crystals and single crystal clamping
device
    • 用于提拉单晶和单晶夹持装置的装置
    • US6099642A
    • 2000-08-08
    • US88657
    • 1998-06-02
    • Shoei KurosakaHiroshi InagakiShigeki KawashimaJunsuke Tomioka
    • Shoei KurosakaHiroshi InagakiShigeki KawashimaJunsuke Tomioka
    • C30B15/30C30B15/32C30B35/00
    • C30B15/30C30B15/32Y10S117/911Y10T117/1004Y10T117/1008Y10T117/1072
    • An object of the invention is to provide a single crystal clamping device and a single crystal supporting method. The single crystal clamping device does not become inclined and does not vibrate, and the center of the single crystal clamping device is congruous to the center of the growing single crystal. An apparatus for pulling up single crystals of the present invention, comprises: a single crystal pulling up wire for pulling up a seed crystal immersed in a melt of a raw material; a single crystal clamping device for clamping one end of the single crystal grown beneath the seed crystal; a wire-winding mechanism fixed on the single crystal clamping means and winding up the single crystal pulling up wire so as to adjust a speed of the single-crystal pulling up wire corresponding to the ascending/descending speeds of the single crystal clamping device; a pulling up wire-load cell for detecting the load applied on the crystal; and a summation load cell for measuring the combined load applied on the crystal pulling up wire and the single crystal clamping device.
    • 本发明的目的是提供一种单晶夹持装置和单晶支撑方法。 单晶夹持装置不会变得倾斜并且不振动,并且单晶夹持装置的中心与生长的单晶的中心一致。 本发明的单晶提拉装置,包括:单晶提拉线,用于拉出浸在原料熔体中的晶种; 用于夹持在晶种之下生长的单晶的一端的单晶夹持装置; 固定在单晶夹持装置上的绕线机构,并且卷绕单晶提拉线,以便根据单晶夹持装置的上升/下降速度调节单晶提拉线的速度; 用于检测施加在晶体上的负载的提拉线电池; 以及用于测量施加在晶体上拉线和单晶夹持装置上的组合负载的求和测力传感器。
    • 5. 发明授权
    • Apparatus for manufacturing single crystal
    • 单晶制造装置
    • US6007625A
    • 1999-12-28
    • US941309
    • 1997-09-30
    • Junsuke TomiokaHiroshi InagakiFumitaka Ishikawa
    • Junsuke TomiokaHiroshi InagakiFumitaka Ishikawa
    • C30B15/00C30B15/14C30B29/06C30B35/00
    • C30B29/06C30B15/14Y10S117/917Y10T117/1068Y10T117/1072Y10T117/1088
    • This invention provides a method and a apparatus capable of manufacturing single crystals with an oxygen density of less than 12.times.10.sup.17 atoms/cm.sup.3 or less than 10.times.10.sup.17 atoms/cm.sup.3, and wherein the oxygen density of the single crystal produced is uniformly distributed along its longitudinal axis. The electrical power inputted into the main heater 6 surrounding the quartz crucible 4 and the top heater 9 shaped like a reverse frustrated cone and disposed above the quartz crucible 4, is controlled to keep the temperature of the melt 5 in a preset range during the process of pulling up the single crystal silicon 10. When combining the main heater 6 and the top heater 9, the heat emitted from the main heater 6 can be kept small, and the heat load on the quartz crucible 4 and the amount of oxygen released from the quartz crucible 4 and dissloved into melt 5 can be reduced. Therefore, a single crystal of low oxygen density and with uniformly distributed oxygen density along its longitudinal axis can be obtained. Furthermore, the single-crystal silicon 10 can be assigned a proper thermal history. In the above process, if a magnetic field is applied to the melt, then single crystals of much lower oxygen density can be obtained.
    • 本发明提供能够制造氧密度小于12×10 17原子/ cm 3或小于10×10 17原子/ cm 3的单晶的方法和装置,其中所制造的单晶的氧密度沿其纵向轴线均匀分布。 控制输入​​到围绕石英坩埚4的主加热器6的电力以及设置在石英坩埚4上方的倒塌锥体形状的顶部加热器9,以在熔融过程中将熔体5的温度保持在预设范围内 拉起单晶硅10.当组合主加热​​器6和顶部加热器9时,可以将从主加热器6发射的热量保持较小,并且石英坩埚4上的热负荷和从 可以减少石英坩埚4并且被分解成熔体5。 因此,可以获得具有低氧密度并沿着其纵轴具有均匀分布的氧密度的单晶。 此外,单晶硅10可以被赋予适当的热历史。 在上述过程中,如果对熔体施加磁场,则可以获得低得多的氧密度的单晶。
    • 6. 发明授权
    • Apparatus and method for pulling up single crystals
    • 提取单晶的装置和方法
    • US5942033A
    • 1999-08-24
    • US48302
    • 1998-03-26
    • Shoei KurosakaHiroshi InagakiShigeki KawashimaJunsuke Tomioka
    • Shoei KurosakaHiroshi InagakiShigeki KawashimaJunsuke Tomioka
    • C30B15/00C30B15/30C30B15/24
    • C30B15/30Y10S117/911Y10T117/1072
    • A crystal-clamping fixture 30 is suspended by a pulling up mechanism 1 through the use of wires. The crystal-clamping fixture 30 includes a box 31 and a plurality of holding rods 32. The box 31 has two openings formed on its top and bottom sides. The reduced portion 2a, the enlarged portion 2b and the necked portion 2c formed beneath the seed crystal 5 are allowed to penetrate through the two openings during the pulling up operation. A plurality of "S" shaped slots 31a, 31b are formed on the lateral sides of the box 31. The holding rods 32 capable of rotating along the path of the "S" shaped slots 31a, 31b are horizontally disposed within the box 31 by inserting their two end portions through the "S" shaped slots 31a, 31b. The holding rods kept restrained at the upper ends of the "S" shaped slots are pushed out by the conic surface formed at the upper part of the enlarged portion 2b and rotate and descend to reach the lower ends of the "S" shaped slots. At the time the crystal-clamping fixture 30 is directed to ascend a small distance, then the holding rods 32 contact the conic surface formed between the enlarged portion 2b and the necked portion 2c to clamp the single crystal 2.
    • 通过使用电线,拉出机构1悬挂晶体夹具30。 晶体夹具30包括盒31和多个保持杆32.盒31具有在其顶侧和底侧上形成的两个开口。 在拉拔操作期间允许形成在晶种5下面的缩小部分2a,扩大部分2b和颈部2c穿过两个开口。 多个“S”形槽31a,31b形成在盒31的侧面上。能够沿着“S”形槽31a,31b的路径旋转的保持杆32通过 将它们的两个端部插入穿过“S”形槽31a,31b。 在“S”形槽的上端保持约束的保持杆被形成在扩大部分2b的上部的锥形表面推出,并且旋转和下降到达“S”形槽的下端。 当晶体夹具30被指向上升一小段距离时,保持杆32接触形成在扩大部分2b和颈缩部分2c之间的锥形表面,以夹紧单晶2。
    • 10. 发明授权
    • Air fuel ratio detection apparatus
    • 空燃比检测装置
    • US07964073B2
    • 2011-06-21
    • US11604218
    • 2006-11-27
    • Masamichi HiraiwaTakeshi KawaiSatoshi TeramotoShigeki MoriHiroshi Inagaki
    • Masamichi HiraiwaTakeshi KawaiSatoshi TeramotoShigeki MoriHiroshi Inagaki
    • G01N27/419
    • G01N27/419
    • Using a gas detection voltage Vs output from a terminal CU, a determination is made at to whether, after startup of an air-fuel ratio detection apparatus (1), a full-range air-fuel ratio sensor (10) has reached a semi-activated state in which a determination can be made as to whether the air-fuel ratio is on the rich or lean side based on a change in a gas detection signal Vic. After determining that the sensor has reached the semi-activated state, the signal Vic is compared with a threshold to determine whether the air-fuel ratio is on the rich or lean side. In the apparatus (1), the potential difference between an outer pump electrode of a pump cell (14) and a reference electrode of an oxygen concentration measurement cell (24) is obtained via a first differential amplification circuit (53) as the gas detection signal Vic, the signal Vic being highly responsive to a change in air-fuel ratio of exhaust gas.
    • 使用从端子CU输出的气体检测电压Vs,判定在空燃比检测装置(1)启动后,全范围空燃比传感器(10)到达半空 基于气体检测信号Vic的变化,能够进行空燃比是富气还是偏侧的判定。 在确定传感器已经达到半激活状态之后,将信号Vic与阈值进行比较,以确定空燃比是富有还是偏侧。 在装置(1)中,通过作为气体检测器的第一差分放大电路(53)获得泵电池(14)的外泵电极与氧浓度测定电池(24)的参比电极之间的电位差 信号Vic,信号Vic对废气的空燃比变化高度响应。