Removal of dielectric oxides
    7.
    发明授权
    Removal of dielectric oxides 失效
    去除介电氧化物

    公开(公告)号:US06200891B1

    公开(公告)日:2001-03-13

    申请号:US09133537

    申请日:1998-08-13

    IPC分类号: H01L214763

    CPC分类号: H01L21/31111

    摘要: Oxides such as those commonly used in interlevel dielectrics may be removed employing a liquid composition containing a fluoride-containing compound and an organic solvent. Preferred compositions are substantially nonaqueous and include an anhydride. Improved methods for selective removal of oxides, especially for removal of silicon oxides where pre-exposed (or conductive metal - containing) features are present, where metal (conductive metal - contaimg) features are to be exposed by the desired oxide removal, or where the silcon oxide otherwise contacts metal (or conductive metal - containing) features are provided.

    摘要翻译: 可以使用含有含氟化合物和有机溶剂的液体组合物来除去在层间电介质中常用的那些氧化物。 优选的组合物基本上是非水的并且包括酸酐。 改进的选择性去除氧化物的方法,特别是用于去除其中预暴露(或含导电金属)特征的氧化硅,其中金属(导电金属 - 接枝)特征将通过所需的氧化物去除而暴露,或其中 另外提供了氧化锡氧化物接触金属(或含导电金属)特征。

    Sonic cleaning with an interference signal
    10.
    发明授权
    Sonic cleaning with an interference signal 失效
    用干扰信号进行声波清洗

    公开(公告)号:US06276370B1

    公开(公告)日:2001-08-21

    申请号:US09343827

    申请日:1999-06-30

    IPC分类号: B08B302

    摘要: An array of ultrasonic or megasonic transducers is used to clean a substrate. An interference signal that is the superposition of the signals from each transducer enhances the cleaning. The system improves cleaning by providing a higher intensity beam than is available from uncoupled transducers to facilitate removal of smaller particles. In addition, the beam can be swept across the substrate to provide a uniform cleaning of the entire surface, avoiding dead spots. The system can be adapted for use in a vessel or for single wafer processing with a stream of fluid or a puddle of fluid.

    摘要翻译: 使用超声波或兆声波换能器阵列来清洁基底。 作为来自每个换能器的信号的叠加的干扰信号增强了清洁。 该系统通过提供比不连接的换能器可获得的更高强度的束来改善清洁以便于去除更小的颗粒。 此外,梁可以扫过基板,以提供对整个表面的均匀清洁,从而避免死点。 该系统可以适用于容器中或用于具有流体流或流体池的单晶片处理。