Post etch dielectric film re-capping layer
    4.
    发明授权
    Post etch dielectric film re-capping layer 有权
    后蚀刻介质膜覆盖层

    公开(公告)号:US08105947B2

    公开(公告)日:2012-01-31

    申请号:US12547232

    申请日:2009-08-25

    摘要: Methods for improving post etch in via or trench formation in semiconductor devices. A preferred embodiment comprises forming a re-capping layer over a dielectric film following an initial etch to form a feature in the dielectric film, followed by additional etch and etch back processing steps. The re-capping method provides protection for underlying films and prevents film damage post etch. Uniform feature profiles are maintained and critical dimension uniformity is obtained by use of the methods of the invention. The time dependent dielectric breakdown performance is increased.

    摘要翻译: 用于改善半导体器件中的通孔或沟槽形成中的后蚀刻的方法。 优选实施例包括在初始蚀刻之后在电介质膜上形成覆盖层,以在电介质膜中形成特征,随后进行另外的蚀刻和回蚀处理步骤。 重新覆盖方法为底层膜提供保护,并防止蚀刻后的膜损伤。 通过使用本发明的方法维持均匀的特征轮廓并获得临界尺寸均匀性。 时间依赖介电击穿性能提高。

    Method for Improving the Reliability of Low-k Dielectric Materials
    7.
    发明申请
    Method for Improving the Reliability of Low-k Dielectric Materials 审中-公开
    提高低k电介质材料可靠性的方法

    公开(公告)号:US20090258487A1

    公开(公告)日:2009-10-15

    申请号:US12102695

    申请日:2008-04-14

    IPC分类号: H01L21/4763

    CPC分类号: H01L21/76825 H01L21/3105

    摘要: A method for forming an integrated circuit structure includes providing a semiconductor substrate; forming a low-k dielectric layer over the semiconductor substrate; generating hydrogen radicals using a remote plasma method; performing a first hydrogen radical treatment to the low-k dielectric layer using the hydrogen radicals; forming an opening in the low-k dielectric layer; filling the opening with a conductive material; and performing a planarization to remove excess conductive material on the low-k dielectric layer.

    摘要翻译: 一种用于形成集成电路结构的方法包括提供半导体衬底; 在半导体衬底上形成低k电介质层; 使用远程等离子体法产生氢自由基; 使用氢自由基对低k电介质层进行第一次氢自由基处理; 在低k电介质层中形成开口; 用导电材料填充开口; 并执行平面化以去除低k电介质层上的过量导电材料。

    Interconnects containing bilayer porous low-k dielectrics using different porogen to structure former ratio
    9.
    发明申请
    Interconnects containing bilayer porous low-k dielectrics using different porogen to structure former ratio 有权
    包含双层多孔低k电介质的互连使用不同的致孔剂来构造前者的比例

    公开(公告)号:US20080171431A1

    公开(公告)日:2008-07-17

    申请号:US11654427

    申请日:2007-01-17

    IPC分类号: H01L21/4763

    摘要: A bilayer porous low dielectric constant (low-k) interconnect structure and methods of fabricating the same are presented. A preferred embodiment having an effective dielectric constant of about 2.2 comprises a bottom deposited dielectric layer and a top deposited dielectric layer in direct contact with the former. The bottom layer and the top layer have same atomic compositions, but a higher dielectric constant value k. The bottom dielectric layer serves as an etch stop layer for the top dielectric layer, and the top dielectric layer can act as CMP stop layer. One embodiment of making the structure includes forming a bottom dielectric layer having a first porogen content and a top dielectric layer having a higher porogen content. A curing process leaves lower pore density in the bottom dielectric layer than that left in the top dielectric layer, which leads to higher dielectric value k in the bottom dielectric layer.

    摘要翻译: 提出了双层多孔低介电常数(低k)互连结构及其制造方法。 具有约2.2的有效介电常数的优选实施例包括与前者直接接触的底部沉积介电层和顶部沉积的介电层。 底层和顶层具有相同的原子组成,但是较高的介电常数值k。 底部介电层用作顶部电介质层的蚀刻停止层,并且顶部介电层可以用作CMP停止层。 制造该结构的一个实施方案包括形成具有第一致孔剂含量的底部电介质层和具有较高致孔剂含量的顶部电介质层。 固化过程在底部电介质层中留下比在顶部电介质层中留下的孔密度更低的孔密度,这导致底部电介质层中较高的介电值k。