ETCH STOP LAYER FOR A METALLIZATION LAYER WITH ENHANCED ETCH SELECTIVITY AND HERMETICITY
    6.
    发明申请
    ETCH STOP LAYER FOR A METALLIZATION LAYER WITH ENHANCED ETCH SELECTIVITY AND HERMETICITY 有权
    用于具有增强蚀刻选择性和浸蚀性的金属化层的蚀刻层

    公开(公告)号:US20070096108A1

    公开(公告)日:2007-05-03

    申请号:US11426970

    申请日:2006-06-28

    IPC分类号: H01L31/0312

    摘要: By providing a barrier layer stack including a silicon nitride layer for confining a copper-based metal region, thereby also effectively avoiding any diffusion of oxygen and moisture into the copper region, and a nitrogen-enriched silicon carbide layer, the total relative permittivity may be maintained at a low level, since the thickness of the silicon nitride layer may be moderately thin, while the relatively thick silicon carbide nitride layer provides the required high etch selectivity during a subsequent patterning process of the low-k dielectric layer.

    摘要翻译: 通过提供包括用于限制铜基金属区域的氮化硅层的阻挡层堆叠,从而也有效地避免氧和水分进入铜区域的任何扩散,以及富含氮的碳化硅层,总相对介电常数可以是 保持在低水平,因为氮化硅层的厚度可以适度地薄,同时相对较厚的碳化硅氮化物层在低k电介质层的随后的图案化工艺期间提供所需的高蚀刻选择性。

    Etch stop layer for a metallization layer with enhanced adhesion, etch selectivity and hermeticity
    7.
    发明授权
    Etch stop layer for a metallization layer with enhanced adhesion, etch selectivity and hermeticity 有权
    用于金属化层的蚀刻停止层,具有增强的附着力,蚀刻选择性和气密性

    公开(公告)号:US07867917B2

    公开(公告)日:2011-01-11

    申请号:US11456116

    申请日:2006-07-07

    IPC分类号: H01L21/00

    摘要: By providing a barrier layer stack including a thin SiCN layer for enhanced adhesion, a silicon nitride layer for confining a copper-based metal region (thereby also effectively avoiding any diffusion of oxygen and moisture into the copper region), and a SiCN layer, the total relative permittivity may still be maintained at a low level, since the thickness of the first SiCN layer and of the silicon nitride layer may be moderately thin, while the relatively thick silicon carbide nitride layer provides the required high etch selectivity during a subsequent patterning process of the low-k dielectric layer.

    摘要翻译: 通过提供包括用于增强粘附力的薄SiCN层的阻挡层堆叠,用于限制铜基金属区域(从而也有效地避免氧和水分进入铜区域的任何扩散)的氮化硅层和SiCN层, 由于第一SiCN层和氮化硅层的厚度可能适度地薄,所以总相对介电常数可能仍然保持在较低水平,而相对较厚的碳化硅氮化物层在随后的图案化工艺期间提供所需的高蚀刻选择性 的低k电介质层。

    Etch stop layer for a metallization layer with enhanced etch selectivity and hermeticity
    8.
    发明授权
    Etch stop layer for a metallization layer with enhanced etch selectivity and hermeticity 有权
    用于具有增强的蚀刻选择性和气密性的金属化层的蚀刻停止层

    公开(公告)号:US07476626B2

    公开(公告)日:2009-01-13

    申请号:US11426970

    申请日:2006-06-28

    IPC分类号: H01L21/31

    摘要: By providing a barrier layer stack including a silicon nitride layer for confining a copper-based metal region, thereby also effectively avoiding any diffusion of oxygen and moisture into the copper region, and a nitrogen-enriched silicon carbide layer, the total relative permittivity may be maintained at a low level, since the thickness of the silicon nitride layer may be moderately thin, while the relatively thick silicon carbide nitride layer provides the required high etch selectivity during a subsequent patterning process of the low-k dielectric layer.

    摘要翻译: 通过提供包括用于限制铜基金属区域的氮化硅层的阻挡层堆叠,从而也有效地避免氧和水分进入铜区域的任何扩散,以及富含氮的碳化硅层,总相对介电常数可以是 保持在低水平,因为氮化硅层的厚度可以适度地薄,同时相对较厚的碳化硅氮化物层在低k电介质层的随后的图案化工艺期间提供所需的高蚀刻选择性。