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    • 62. 发明授权
    • Process and apparatus for removing a contaminant from a substrate
    • 用于从基底去除污染物的方法和装置
    • US06953654B2
    • 2005-10-11
    • US10063049
    • 2002-03-14
    • Nicholas A. RyzaAllan W. Awtrey
    • Nicholas A. RyzaAllan W. Awtrey
    • B08B7/00C23G5/00G02B27/00G03F7/40H01L21/00H01L21/306G03F7/42
    • G02B27/0006B08B7/0021C23G5/00G03F7/40G03F7/405H01L21/02063H01L21/67069
    • Contaminant removal from a substrate can be performed using a supercritical fluid. An apparatus can be configured to operate at conditions that take advantage of higher solubility of a contaminant in its supercritical state compared to its liquid state. The substrate can be exposed to a supercritical fluid in a chamber to remove at least some of the contaminant. Outside the chamber, the supercritical fluid can be cooled to its corresponding liquid state, in which lower solubility of the contaminant may allow the contaminant to separate into a different phase from the liquid phase of the supercritical fluid. Such contaminant removal can be highly advantageous to substrates that withstand only limited amounts of physical or mechanical stress or heat. The contaminant removal can also be used where geometries virtually prevent removal by physical or mechanical means.
    • 可以使用超临界流体从基底去除污染物。 可以将装置配置成在与其液体状态相比利用污染物处于其超临界状态的较高溶解度的条件下操作。 衬底可以暴露于室中的超临界流体以去除至少一些污染物。 在室外,超临界流体可以冷却到其相应的液体状态,其中污染物的较低溶解度可允许污染物从超临界流体的液相分离成不同的相。 这种污染物去除对于仅承受有限量的物理或机械应力或热量的基底是非常有利的。 污染物去除也可以用于几何形状几乎防止通过物理或机械手段去除的地方。