METHODS FOR FORMING HIGH ASPECT RATIO FEATURES ON A SUBSTRATE
    1.
    发明申请
    METHODS FOR FORMING HIGH ASPECT RATIO FEATURES ON A SUBSTRATE 审中-公开
    在基板上形成高比例特征的方法

    公开(公告)号:US20100330805A1

    公开(公告)日:2010-12-30

    申请号:US11934589

    申请日:2007-11-02

    IPC分类号: H01L21/768

    CPC分类号: H01L21/31116 H01L21/31144

    摘要: Methods for forming anisotropic features for high aspect ratio application in etch process are provided. The methods described herein advantageously facilitates profile and dimension control of features with high aspect ratios. In one embodiment, a method for anisotropic etching a dielectric layer on a substrate includes providing a substrate having a patterned mask layer disposed on a dielectric layer in an etch chamber, supplying a gas mixture including at least a fluorine and carbon containing gas and a silicon fluorine gas into the etch chamber, and etching features in the dielectric layer in the presence of a plasma formed from the gas mixture.

    摘要翻译: 提供了用于在蚀刻工艺中形成用于高纵横比应用的各向异性特征的方法。 本文所述的方法有利地有利于具有高纵横比的特征的轮廓和尺寸控制。 在一个实施例中,用于各向异性蚀刻衬底上的电介质层的方法包括提供具有设置在蚀刻室中的电介质层上的图案化掩模层的衬底,提供至少包含含氟和含碳气体的气体混合物和硅 氟气进入蚀刻室,并且在由气体混合物形成的等离子体的存在下蚀刻介电层中的特征。