Method of cleaning reaction tube
    2.
    发明授权
    Method of cleaning reaction tube 失效
    反应管清洗方法

    公开(公告)号:US5380370A

    公开(公告)日:1995-01-10

    申请号:US54229

    申请日:1993-04-30

    摘要: Prior to formation of a polysilicon film on a wafer, a pre-coat film having a thickness of 1 .mu.m and consisting of polysilicon is formed on the inner wall surface of a reaction tube or the surface of a member incorporated in the reaction tube. A polysilicon film is formed on the wafer at a temperature of 450.degree. C. to 650.degree. C. A cleaning gas containing ClF.sub.3 having a concentration of 10 to 50 vol. % is supplied into the reaction tube at a flow rate to an area of an object be cleaned of 750 to 3,500 SCCM/m.sup.2 to remove a polysilicon film deposited on the inner wall surface of the reaction tube or the surface of the member incorporated in the reaction tube by etching using the ClF.sub.3. In this case, the cleaning gas is supplied while a temperature in the reaction tube is kept at a temperature of 450.degree. C. to 650.degree. C. and in a pressure condition set at the kept temperature such that an etching rate of a polysilicon film by the cleaning gas is higher than an etching rate of quartz constituting the reaction tube or the member incorporated in the reaction tube.

    摘要翻译: 在晶片上形成多晶硅膜之前,在反应管的内壁表面或装在反应管中的部件的表面上形成厚度为1μm,由多晶硅组成的预涂膜。 在450℃〜650℃的温度下在晶片上形成多晶硅膜。含有浓度为10〜50体积%的ClF 3的清洗气体。 以以750至3,500sccm / m 2的待清洁物体的面积的流量将反应管供给到反应管中以去除沉积在反应管的内壁表面上的多晶硅膜或者包含在反应管中的构件的表面 反应管通过使用ClF3进行蚀刻。 在这种情况下,在将反应管中的温度保持在450℃至650℃的温度下并在设定为保持的温度的压力条件下供给清洁气体,使得多晶硅膜的蚀刻速率 清洗气体高于构成反应管或构成反应管的部件的石英的蚀刻速度。

    Heat treatment apparatus
    5.
    发明授权
    Heat treatment apparatus 失效
    热处理设备

    公开(公告)号:US5370371A

    公开(公告)日:1994-12-06

    申请号:US75119

    申请日:1993-06-10

    摘要: A heat treatment apparatus having a heat treatment boat with a plurality of wafers held thereon, which is to be loaded in a reaction vessel which has one end opened. Once loaded, the boat effects a seal of the reaction vessel, in preparation for subjecting the wafers to heat treatment. The boat also has a heat-insulator disposed on its lower end for heat-insulating the interior of the reaction vessel during the heat-treatment. The heat-insulator includes composite plates having a metal film layer on an upper surface for reflecting heat rays generated during the heat treatment of the reaction vessel, and a cylinder enclosing the composite plates. Thus, sufficient heat-insulating effect for the heat treatment can be obtained, and stable heat-treatment can be conducted with the sufficient heat-insulating effect secured. Furthermore, the generation of particles can be suppressed, and yields of the heat treatment can be improved.

    摘要翻译: 一种热处理装置,具有保存在其上的多个晶片的热处理舟,其将被装载在一端开放的反应容器中。 一旦加载,船就会对反应容器进行密封,以准备对晶片进行热处理。 该船还具有设置在其下端的绝热体,用于在热处理期间对反应容器的内部进行绝热。 绝热体包括在上表面具有用于反映在反应容器的热处理期间产生的热射线的金属膜层的复合板和封闭复合板的圆筒。 因此,可以获得用于热处理的充分的绝热效果,并且可以在确保足够的绝热效果的情况下进行稳定的热处理。 此外,可以抑制颗粒的产生,并且可以提高热处理的产率。