Method and apparatus for manufacturing a silicon single crystal having
few crystal defects, and a silicon single crystal and silicon wafers
manufactured by the same
    22.
    发明授权
    Method and apparatus for manufacturing a silicon single crystal having few crystal defects, and a silicon single crystal and silicon wafers manufactured by the same 有权
    具有很少晶体缺陷的硅单晶的制造方法和装置以及由其制造的硅单晶硅晶片

    公开(公告)号:US6159438A

    公开(公告)日:2000-12-12

    申请号:US359078

    申请日:1999-07-22

    摘要: In method for manufacturing a silicon single crystal in accordance with a Czochralski method, during the growth of the silicon single crystal, pulling is performed such that a solid-liquid interface in the crystal, excluding a peripheral 5 mm-width portion, exists within a range of an average vertical position of the solid-liquid interface.+-. 5 mm. There is also disclosed a method for manufacturing a silicon single crystal in accordance with the Czochralski method, wherein during the growth of a silicon single crystal, a furnace temperature is controlled such that a temperature gradient difference .DELTA.G (=Ge-Gc) is not greater than 5.degree. C./cm, where Ge is a temperature gradient (.degree. C./cm) at a peripheral portion of the crystal, and Gc is a temperature gradient (.degree. C./cm) at a central portion of the crystal, both in an in-crystal descending temperature zone between 1420.degree. C. and 1350.degree. C. or between a melting point of silicon and 1400.degree. C. in the vicinity of the solid-liquid interface of the crystal. The method maintains high productivity and enables a silicon single crystal and silicon wafers to be manufactured such that a defect density is very low over the entire crystal cross section, and the oxygen concentration distribution over the surface of each silicon wafer is improved.

    摘要翻译: 在使用Czochralski法制造硅单晶的方法中,在硅单晶的生长期间,进行拉伸,使得晶体内的固体 - 液体界面(不包括外围5mm宽度部分)存在于 固液界面平均垂直位置的范围+/- 5 mm。 还公开了根据Czochralski方法制造硅单晶的方法,其中在单晶生长期间,控制炉温,使得温度梯度差DELTA G(= Ge-Gc)不是 大于5℃/ cm,其中Ge是晶体周边部分的温度梯度(℃/ cm),Gc是晶体中心部分的温度梯度(℃/ cm) 在晶体的固 - 液界面附近,在1420℃至1350℃之间的晶体下降温度区域或硅熔点与1400℃之间。 该方法保持高生产率,并且能够制造硅单晶和硅晶片,使得在整个晶体截面上的缺陷密度非常低,并且提高了每个硅晶片的表面上的氧浓度分布。

    Crystal holding apparatus
    23.
    发明授权
    Crystal holding apparatus 失效
    水晶保持装置

    公开(公告)号:US6053975A

    公开(公告)日:2000-04-25

    申请号:US39830

    申请日:1998-03-16

    CPC分类号: C30B15/30 Y10T117/1072

    摘要: In a crystal holding apparatus, a corrugated portion between a seed crystal and a straight cylindrical portion of a monocrystal is held by holding portions of a lifting jig during a monocrystal growth process in which the seed crystal is brought into contact with material melt and is subsequently pulled while being rotated. In the crystal holding apparatus, an attachment member for establishing surface contact with the corrugated portion of the crystal is attached to the tip end of each holding portion of the lifting jig. Therefore, the monocrystal can be held reliably, so that the breaking and falling down of the monocrystal during the pulling operation can be prevented.

    摘要翻译: 在晶体保持装置中,晶种与单晶的直圆柱形部分之间的波纹状部分通过在晶体与材料熔体接触的单晶生长过程中保持提升夹具的部分来保持,随后 在旋转时拉动。 在晶体保持装置中,在提升夹具的每个保持部分的末端安装有用于与晶体的波纹部分建立表面接触的附接构件。 因此,可以可靠地保持单晶,从而可以防止在牵引操作期间单晶的断裂和下降。

    Process for producing silicon single crystal
    24.
    发明授权
    Process for producing silicon single crystal 失效
    硅单晶生产工艺

    公开(公告)号:US5976246A

    公开(公告)日:1999-11-02

    申请号:US952481

    申请日:1997-11-19

    摘要: A MCZ method in which the single crystal is pulled while being rotated under the conditions where the crystal growth rate V.sub.1 (mm/min) and the crystal circumference velocity V.sub.2 (mm/min) satisfy the following relationships:0.4.ltoreq.V.sub.10.628.times.10.sup.4 .ltoreq.V.sub.2 .ltoreq.1.0.times.10.sup.4andV.sub.2 .ltoreq.-3.72.times.10.sup.4 V.sub.1 +4.35.times.10.sup.4It is possible to manufacture a silicon single crystal with a large diameter with the MCZ method without causing distortion.

    摘要翻译: PCT No.PCT / JP97 / 00993 Sec。 371日期:1997年11月19日 102(e)1997年11月19日PCT PCT 1997年3月27日PCT公布。 第WO97 / 36025号公报 日期1997年10月2日在晶体生长速度V1(mm / min)和晶体圆周速度V2(mm / min)满足以下关系的条件下旋转单晶的MCZ法: /=V10.628x104

    Apparatus for manufacturing single crystal of silicon
    25.
    发明授权
    Apparatus for manufacturing single crystal of silicon 失效
    用于制造单晶硅的装置

    公开(公告)号:US5968266A

    公开(公告)日:1999-10-19

    申请号:US822088

    申请日:1997-03-20

    摘要: An apparatus for manufacturing a single crystal of silicon includes a crucible, a heater, electrodes, and a magnet. In addition to a plurality of heat generating portions and two main electrode portions, the heater has two or more auxiliary electrode portions. Two or more heater support members having an insulating property are further provided so as to support the heater through the auxiliary electrode portions. The number of heat generating portions which may be present between a heater support member and an electrode and between heater support members if adjacent to each other is equal to or less than 4. Each generating portion of the heater has a thickness of 25 mm or more. This structure makes it possible to produce a single crystal of silicon without causing breakage of a heater, even if a large electric current flows through the heater, even if a magnetic field of a high intensity is applied to a silicon melt in the crucible, and even if the heater has a large diameter.

    摘要翻译: 用于制造单晶硅的装置包括坩埚,加热器,电极和磁体。 除了多个发热部和两个主电极部之外,加热器还具有两个以上的辅助电极部。 进一步提供具有绝缘性能的两个或更多个加热器支撑构件,以便通过辅助电极部分支撑加热器。 可以存在于加热器支撑构件和电极之间以及加热器支撑构件之间的彼此相邻的发热部分的数量等于或小于4.加热器的每个产生部分的厚度为25mm以上 。 即使在坩埚中的硅熔体上施加高强度的磁场,即使大的电流流过加热器,也能够制造单晶硅,而不会导致加热器的断裂,并且 即使加热器具有大的直径。

    Method and apparatus for manufacturing a silicon single crystal having
few crystal defects, and a silicon single crystal and silicon wafers
manufactured by the same
    26.
    发明授权
    Method and apparatus for manufacturing a silicon single crystal having few crystal defects, and a silicon single crystal and silicon wafers manufactured by the same 失效
    具有很少晶体缺陷的硅单晶的制造方法和装置以及由其制造的硅单晶硅晶片

    公开(公告)号:US5968264A

    公开(公告)日:1999-10-19

    申请号:US109530

    申请日:1998-07-02

    摘要: In method for manufacturing a silicon single crystal in accordance with a Czochralski method, during the growth of the silicon single crystal, pulling is performed such that a solid-liquid interface in the crystal, excluding a peripheral 5 mm-width portion, exists within a range of an average vertical position of the solid-liquid interface .+-.5 mm. There is also disclosed a method for manufacturing a silicon single crystal in accordance with the Czochralski method, wherein during the growth of a silicon single crystal, a furnace temperature is controlled such that a temperature gradient difference .DELTA.G (=Ge-Gc) is not greater than 5.degree. C./cm, where Ge is a temperature gradient (.degree.C./cm) at a peripheral portion of the crystal, and Gc is a temperature gradient (.degree.C./cm) at a central portion of the crystal, both in an in-crystal descending temperature zone between 1420.degree. C. and 1350.degree. C. or between a melting point of silicon and 1400.degree. C. in the vicinity of the solid-liquid interface of the crystal. The method maintains high productivity and enables a silicon single crystal and silicon wafers to be manufactured such that a defect density is very low over the entire crystal cross section, and the oxygen concentration distribution over the surface of each silicon wafer is improved.

    摘要翻译: 在使用Czochralski法制造硅单晶的方法中,在硅单晶的生长期间,进行拉伸,使得晶体内的固体 - 液体界面(不包括外围5mm宽度部分)存在于 固液界面平均垂直位置的范围+/- 5 mm。 还公开了根据Czochralski方法制造硅单晶的方法,其中在单晶生长期间,控制炉温,使得温度梯度差DELTA G(= Ge-Gc)不是 大于5℃/ cm,其中Ge是晶体周边部分的温度梯度(℃/ cm),Gc是晶体中心部分的温度梯度(℃/ cm) 在晶体的固 - 液界面附近,在1420℃至1350℃之间的晶体下降温度区域或硅熔点与1400℃之间。 该方法保持高生产率,并且能够制造硅单晶和硅晶片,使得在整个晶体截面上的缺陷密度非常低,并且提高了每个硅晶片的表面上的氧浓度分布。

    Seed crystal holder
    27.
    发明授权
    Seed crystal holder 失效
    种子晶体座

    公开(公告)号:US5948164A

    公开(公告)日:1999-09-07

    申请号:US140288

    申请日:1998-08-25

    摘要: A seed crystal holder used in a crystal pulling apparatus operated in accordance with the Czochralski method. In the seed crystal holder, a heat-resistant cushioning material is provided between the surface of a seed crystal and the contact surface of claws of the holder or between a cutaway surface of the seed crystal and a contact surface of an insert of the holder. The heat-resistant cushioning material is selected from the group consisting of carbon fiber felt, glass fiber felt, metallic fiber felt, or selected from materials that cause plastic deformation such as Al.

    摘要翻译: 用于根据切克劳斯基方法操作的晶体拉制装置中的晶种保持架。 在种子晶体保持器中,在晶种的表面和保持器的爪的接触表面之间或晶种的切口表面与保持器的插入物的接触表面之间设置耐热缓冲材料。 耐热缓冲材料选自碳纤维毡,玻璃纤维毡,金属纤维毡,或选自引起塑性变形的材料如Al。

    Methods for holding and pulling single crystal
    28.
    发明授权
    Methods for holding and pulling single crystal 失效
    持有和拉取单晶的方法

    公开(公告)号:US5871578A

    公开(公告)日:1999-02-16

    申请号:US915397

    申请日:1997-08-20

    摘要: Oscillation of a growing crystal is suppressed in a Czochralski method when part of the growing crystal is mechanically held. Methods for holding and pulling a single crystal in a Czochralski method, wherein a seed crystal is pulled while rotating after the seed crystal is contacted with a raw material melt, part of the growing single crystal is mechanically held during pulling and the single crystal of heavy weight can be pulled regardless of mechanical strengths of the seed crystal or a neck portion thereof, wherein the raw material melt is under application of a magnetic field thereto when the growing crystal is mechanically held.

    摘要翻译: 当生长晶体的一部分被机械保持时,生长晶体的振荡被抑制在切克劳斯基法(Czochralski method)中。 用Czochralski方法保持和拉取单晶的方法,其中在晶种与原料熔体接触之后,旋转时拉晶晶体,部分生长的单晶在拉伸期间被机械地保持,并且重结晶的单晶 无论种子晶体或其颈部的机械强度如何,均可以拉伸重量,其中当机械保持生长的晶体时,原料熔体施加磁场。

    Biaxial orientation blow molding method and preform holding jig
    30.
    发明授权
    Biaxial orientation blow molding method and preform holding jig 失效
    双轴取向吹塑法和预制棒保持夹具

    公开(公告)号:US5711913A

    公开(公告)日:1998-01-27

    申请号:US564192

    申请日:1995-12-18

    摘要: The present invention is intended to prevent the deformation of a cylindrical mouth portion of a preform when a blow pressure acts thereon in a diameter expanding direction during biaxial orientation blow molding. During biaxial orientation blow molding, sealing of the blow pressure is accomplished by means of a neck ring P1 circumferentially provided on a lower end of the circumferentially provided on a lower end of the circumferential surface of a cylindrical mouth portion P2 of a preform to thereby make the blow pressure act uniformly on the whole area of the cylindrical mouth portion P2, whereby the unreasonable deformation of the cylindrical mouth portion P2 due to the ununiform application of blow pressure thereto can totally be eliminated.

    摘要翻译: PCT No.PCT / JP95 / 00853 Sec。 371 1995年12月18日第 102(e)1995年12月18日日期PCT 1995年4月28日PCT PCT。 出版物WO95 / 29804 日期:1995年11月9日本发明是为了防止在双轴取向吹塑成形时吹塑压力在直径扩大方向作用于其上的预成型件的圆筒形口部的变形。 在双轴取向吹塑成型中,吹塑压力的密封是通过圆周设置在圆周的设置在预成型件的圆筒形口部P2的圆周表面的下端的下端上的颈环P1来实现的 吹出压力均匀地作用在圆筒形口部P2的整个区域上,从而可以完全消除由于吹塑压力不均匀引起的圆筒形口部P2的不合理的变形。