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    • 7. 发明授权
    • Methods and apparatus for minimizing excess aluminum accumulation in CVD
chambers
    • 用于最小化CVD室中过多的铝积聚的方法和装置
    • US5858464A
    • 1999-01-12
    • US791131
    • 1997-02-13
    • Karl LittauDashun S. ZhouAlfred MakLing Chen
    • Karl LittauDashun S. ZhouAlfred MakLing Chen
    • C23C16/20C23C16/44H01L21/28H01L21/285H01L21/3205H01L23/52
    • H01L21/28556C23C16/4401C23C16/4404
    • A method and apparatus for minimizing excess aluminum deposition that can build up inside a substrate processing chamber during an aluminum CVD substrate processing operation. The method of the present invention periodically introduces nitrogen into the processing chamber after aluminum CVD processing of at least a single wafer in order to minimize unwanted aluminum accumulation in various parts of the chamber. According to one embodiment, the present invention provides a method of minimizing excess metal deposition inside a substrate processing chamber after a substrate processing operation. The method includes the steps of introducing a nitrogen-containing passivating gas into a chamber after the substrate processing operation, and maintaining at least a portion of the chamber at a second temperature during the introducing step thereby reducing excess metal build up within the chamber. In preferred embodiments, the method is performed after removal of the substrate from the processing chamber. In other preferred embodiments, the second temperature ranges from about 200.degree.-300.degree. C.
    • 一种用于最小化在铝CVD衬底处理操作期间可以在衬底处理室内形成的多余铝沉积的方法和装置。 本发明的方法在对至少一个晶片进行铝CVD处理之后,将氮气周期性地引入处理室中,以便最小化腔室各部分中不希望的铝积聚。 根据一个实施例,本发明提供一种在衬底处理操作之后使衬底处理室内的多余金属沉积最小化的方法。 该方法包括以下步骤:在基板处理操作之后将含氮钝化气体引入室中,并且在引入步骤期间将室的至少一部分保持在第二温度,从而减少室内过量的金属积聚。 在优选的实施方案中,在从处理室中除去基材之后进行该方法。 在其它优选实施方案中,第二温度范围为约200-300℃