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    • 5. 发明授权
    • Low pressure CVD system
    • 低压CVD系统
    • US5902406A
    • 1999-05-11
    • US818096
    • 1997-03-14
    • Taroh UchiyamaYukio YoshikawaTakashi TsukamotoJiro Nishihama
    • Taroh UchiyamaYukio YoshikawaTakashi TsukamotoJiro Nishihama
    • C23C16/44C30B25/08C23C16/00
    • C23C16/44C30B25/08
    • A low pressure CVD system comprising an inner tube having an upper end and a lower end opened, and made of a silicon carbide material, an outer tube including a circumferential wall surrounding an outer periphery of the inner tube with a predetermined spacing, an upper wall closing an upper end of the circumferential wall and a flange provided at a lower portion thereof, the outer tube having a lower end opened, a base portion for supporting the inner tube and the outer tube at the lower ends thereof, and for providing hermetic sealing between the lower end of the outer tube and the base portion, the base portion having a central portion formed with an opening, a lid provided for opening and shutting the opening in the base portion, and a furnace wall surrounding the circumferential wall and the upper wall of the outer tube, the furnace wall having a heater arranged on an inner side thereof wherein the outer tube is made of a silicon carbide material, and padding of a silicon carbide material is formed at a corner of a joined portion between the circumferential wall and the flange of the outer tube.
    • 一种低压CVD系统,包括具有上端和下端打开并由碳化硅材料制成的内管,外管包括以预定间隔围绕内管的外周的周壁,上壁 闭合周壁的上端和设置在其下部的凸缘,外管的下端开口,用于在其下端支撑内管和外管的基部,并且用于提供气密密封 在所述外管的下端和所述基部之间,所述基部具有形成有开口的中心部,设置用于打开和关闭所述基部的开口的盖以及围绕所述周壁和所述上部的壁的炉壁 所述炉壁具有设置在其内侧的加热器,其中所述外管由碳化硅材料制成,并且填充碳化硅m 在周壁和外管的凸缘之间的接合部分的角部处形成有空隙。