Single crystal furnace
    4.
    发明授权

    公开(公告)号:US11795570B2

    公开(公告)日:2023-10-24

    申请号:US17126657

    申请日:2020-12-18

    IPC分类号: C30B15/14 C30B35/00

    摘要: A single crystal furnace is provided, including a main furnace chamber; an auxiliary furnace chamber communicating with the main furnace chamber; and a material chamber provided with a charging inlet and a charging mechanism, wherein the material chamber is communicated with the main furnace chamber through the charging inlet, the charging mechanism is telescopically coupled to the charging inlet for charging materials into a crucible in the main furnace chamber. In the single crystal furnace, the material chamber is provided, so that charging operation may be performed during taking out the monocrystalline silicon rod, thereby effectively shortening the time consumed by taking out the monocrystalline silicon rod and the charging operation, and improving production efficiency.

    APPARATUS FOR MANUFACTURING SILICON SINGLE CRYSTAL AND MELT INLET PIPE OF THE SAME

    公开(公告)号:US20180066377A1

    公开(公告)日:2018-03-08

    申请号:US15677368

    申请日:2017-08-15

    申请人: SUMCO CORPORATION

    IPC分类号: C30B15/02 C30B29/06 C30B15/10

    摘要: An apparatus for manufacturing a silicon single crystal is provided. The apparatus comprises a chamber (11), a quarts crucible (21) provided in the chamber so as to be rotatable and movable upward and downward and store a silicon melt, a first heater (25) for melting a silicon raw material stored in the crucible, and a pulling mechanism (32) provided in the chamber so as to be rotatable and movable upward and downward. The pulling mechanism has a lower end to which a seed crystal (S) is attached. The seed crystal is to be dipped in the silicon melt in the crucible and pulled upward for growing a silicon single crystal by a Czochralski method. The apparatus further comprises a melt supplying mechanism (50) for supplying an additional silicon melt to the silicon melt in the crucible from external of the chamber. The melt supplying mechanism includes a melt inlet pipe (51) disposed at an inclination angle θ1 of 50° to 80° with respect to the melt surface of the silicon melt and a melt generating mechanism (54) for supplying the additional silicon melt (M) to an opening part (512) of a base end of the melt inlet pipe. The melt inlet pipe has a tip end provided with an opening part (511). The opening part of the tip end has an annular surface inclined at an angle θ2 with respect to a direction orthogonal to the axis of the melt inlet pipe. The annular surface has a vertically lower side (511a) and a vertically upper side (511b). The vertically lower side is located nearer to the tip end in the axis direction than the vertically upper side.

    CRYSTAL GROWTH APPARATUS AND CRYSTAL PRODUCTION METHOD

    公开(公告)号:US20170362735A1

    公开(公告)日:2017-12-21

    申请号:US15622427

    申请日:2017-06-14

    IPC分类号: C30B9/12 C30B29/40

    CPC分类号: C30B9/12 C30B29/406 C30B35/00

    摘要: A crystal growth apparatus includes: a raw material supplying part that mixes raw materials including a group III element metal and an alkali metal; a growing part disposed at a stage under the raw material supplying part, the growing part having a seed substrate; a tilting mechanism that tilts the raw material supplying part and the growing part; a heater that heats the raw material supplying part and the growing part; a control part that controls an operation of the tilting mechanism; and a supply port that supplies a nitrogen element-containing substance to the growing part, wherein the raw material supplying part having an opening facing to the growing part, the opening being disposed at a bottom portion and one edge portion of the raw material supplying part, and the control part controls the tilting mechanism so as to tilt the raw material supplying part toward the other edge portion on the side opposite to the one edge portion so as to prevent the raw materials from entering the opening when the raw materials are mixed, and the control part controls the tilting mechanism so as to tilt the raw material supplying part toward the one edge portion so that the raw materials drop through the opening to the growing part when the mixing of the raw materials is completed.