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    • 6. 发明授权
    • Plasma processing apparatus
    • 等离子体处理装置
    • US06727654B2
    • 2004-04-27
    • US09756873
    • 2001-01-10
    • Unryu OgawaTakayuki Sato
    • Unryu OgawaTakayuki Sato
    • H05B3126
    • H01J37/32091H01J37/32009H05H1/46
    • The invention provides a plasma processing apparatus, in which the uniformity of the plasma density can be improved, and the electron temperature can be kept low. A vacuum vessel 21 for generating a plasma includes an upper vessel 22 that is dome-shaped and formed in one seamless piece, and a lower vessel 23 fastened tightly on a lower aperture portion 24 of the upper vessel 22 with a sealing member. The plasma processing apparatus is provided with a supply port 26 for supplying gas to the vacuum vessel 21 and an exhaust port 34 for exhausting gas. An electrode 29 for applying high-frequency power to ionize the gas is provided not in the vacuum vessel 21 but in ring-shape outside the vacuum vessel 21. On the outer side of this tubular electrode 29, a pair of tubular magnets 30 are provided, which form magnetic force lines that intersect perpendicularly with the electric field.
    • 本发明提供一种等离子体处理装置,其中可以提高等离子体密度的均匀性,并且可以将电子温度保持为低。 用于产生等离子体的真空容器21包括穹顶形并形成在一个无缝件中的上容器22和下容器23,其紧密地紧固在上容器22的下孔部分24上,并具有密封构件。 等离子体处理装置设置有用于向真空容器21供应气体的供给口26和用于排出气体的排气口34。 用于施加高频电离电离气体的电极29不设置在真空容器21中,而是设置在真空容器21外侧的环状。在该管状电极29的外侧设置有一对管状磁体30 形成与电场垂直相交的磁力线。