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    • 9. 发明授权
    • Dispersion plate for flowing vaporizes compounds used in chemical vapor deposition of films onto semiconductor surfaces
    • 用于流动的分散板将用于化学气相沉积膜的化合物蒸发到半导体表面上
    • US06302965B1
    • 2001-10-16
    • US09638506
    • 2000-08-15
    • Salvador UmotoyVincent KuXiaoxiong YuanLawrence Chung-Lai Lei
    • Salvador UmotoyVincent KuXiaoxiong YuanLawrence Chung-Lai Lei
    • C23C1600
    • C23C16/45576C23C16/16C23C16/455
    • A dispersion plate for evenly flowing at low pressure into a processing chamber vaporized material, such as a tungsten compound for deposition of metal layers onto a semiconductor, has a disc-like body with a center axis, an input face and an output face. The dispersion plate has a cup-like entrance along the center axis in its input face for receiving a stream of vaporized material and a plurality of passages for flow of vapor with each passage having a length and a diameter and extending radially from the entrance like the spokes of a wheel at inclined angles relative to the center axis from the input face to the output face. Two annular grooves are cut into the output face and intersect with the respective ends of the passages. The plate has a center hole with a flared diameter extending along the center axis from the entrance in the input face to the output face. The hole and plurality of passages are designed to have sufficiently large diameters so as to keep pressure drops low with respect to vapor flowing through the plate.
    • 用于在低压下均匀流动到处理室的分散板,例如用于将金属层沉积到半导体上的钨化合物的气化材料具有中心轴,输入面和输出面的盘状体。 分散板在其输入面中具有沿着中心轴线的杯状入口,用于接收气化材料流和多个用于蒸汽流动的通道,每个通道具有长度和直径并且从入口径向延伸,如 轮的轮辐相对于从输入面到输出面的中心轴线呈倾斜角。 两个环形槽被切割成输出面并与通道的相应端相交。 该板具有中心孔,该中心孔具有沿着中心轴线从输入面入口到输出面延伸的扩口直径。 孔和多个通道被设计成具有足够大的直径,以便相对于流过板的蒸气保持压力降低。