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    • 3. 发明授权
    • Single crystal pulling apparatus
    • 单晶拉丝机
    • US06228167B1
    • 2001-05-08
    • US09297678
    • 1999-05-09
    • Makoto KuramotoTetsuhiro Iida
    • Makoto KuramotoTetsuhiro Iida
    • C30B1500
    • C30B15/30Y10S117/911Y10T117/1032Y10T117/1072
    • In the apparatus according to the present invention, self-weight of a single crystal is moved in soft manner when the single crystal being pulled up is gripped by grippers, and driving of pulling operation after self-weight movement is performed by a single driving source, and it is aimed to prevent contamination and dislocation of the single crystal by arranging all driving units outside a vacuum chamber for storing the single crystal. There is provided a support member 70 for supporting a portion with larger diameter 5 under a seed crystal 3, and the support member 70 is provided with a through-hole, which is communicated with outer peripheral portion via a slit 74, and it can be rotated in horizontal direction between a non-holding position and a holding position by the motor 40. Position of the support member 70 is controlled in vertical direction with respect to the seed crystal holder 2, and when it is out of vertical position control operation, the support member 70 is integrally moved with the seed crystal holder 2 in vertical direction by transmitting motive power of the seed crystal pulling means 20, and the driving sources are arranged outside the vacuum chamber for storing single crystal.
    • 在根据本发明的装置中,当被提起的单晶被夹持器夹持时,单晶的自重以柔和的方式移动,并且通过单个驱动源执行自重移动之后的拉动操作的驱动 并且旨在通过将所有驱动单元布置在用于存储单晶的真空室外部来防止单晶的污染和位错。 设置有用于在籽晶3下支撑具有较大直径5的部分的支撑构件70,并且支撑构件70设置有通过狭缝74与外周部分连通的通孔,并且其可以是 通过电动机40在非保持位置和保持位置之间在水平方向上旋转。支撑构件70的位置相对于晶种保持器2在垂直方向上被控制,并且当其处于垂直位置控制操作时, 支撑构件70通过发射晶种牵引装置20的动力而沿着垂直方向与籽晶保持器2整体移动,并且驱动源布置在用于存储单晶的真空室的外侧。
    • 4. 发明授权
    • Single crystal pulling apparatus
    • 单晶拉丝机
    • US6022411A
    • 2000-02-08
    • US37513
    • 1998-03-10
    • Makoto Kuramoto
    • Makoto Kuramoto
    • C30B15/30C30B35/00
    • C30B15/30Y10S117/911Y10T117/1068Y10T117/1072Y10T117/1076
    • The object of the present invention is to prevent the single crystal during pulling operation from turning to polycrystal when the single crystal under pulling operation is gripped by a gripper and to achieve the gripping automatically. When a wire 1 is moved down to immerse a seed crystal 3 into surface of a Si melt 11 in a quartz crucible 10, arms 12 and 13 wait at such positions that tips do not come into contact with the Si melt 11, and tips of the gripping arm 12 are opened so that the tips are not brought into contact with a portion with larger diameter 5 during pulling operation. By pulling up the wire 1, a neck portion 4, a portion with larger diameter 5, a constricted portion 6, and a crystal main portion 7 are formed under the seed crystal 3. When a sensor 14 detects that upper surface of the portion with larger diameter 5 has come into contact with the tips of the contact/detecting arm 13 during pulling operation, tips of the gripping arm 12 are closed and grip the constricted portion 6. When gripping is completed, the wire 1 and the arms 12 and 13 are pulled up while integrally being rotated.
    • 本发明的目的在于,当拉伸操作中的单晶被夹持器夹持时,防止拉伸操作期间的单晶转向多晶,并自动实现夹持。 当导线1向下移动以将晶种3浸入石英坩埚10中的Si熔体11的表面时,臂12和13等待尖端不与Si熔融物11接触的位置,并且尖端 夹紧臂12打开,使得尖端在拉动操作期间不与具有较大直径的部分5接触。 通过拉起导线1,在晶种3的下面形成有颈部4,直径大的部分5,缩颈部分6和晶体主体部分7。当传感器14检测到部分的上表面 在拉动操作期间,较大的直径5已经与接触/检测臂13的尖端接触,把持臂12的尖端被关闭并且夹紧收缩部分6.当夹紧完成时,线1和臂12和13 在整体旋转的同时被拉起。