Copper back-end-of-line by electropolish
    3.
    发明授权
    Copper back-end-of-line by electropolish 有权
    铜后线通过电解抛光

    公开(公告)号:US06649513B1

    公开(公告)日:2003-11-18

    申请号:US10146286

    申请日:2002-05-15

    IPC分类号: H01L214763

    摘要: A method of fabricating a planarized metal structure comprising the following steps. A structure is provided. A patterned dielectric layer is formed over the structure. The patterned dielectric layer having an opening formed therein and exposing at least a portion of the structure. A first-metal layer is formed over the patterned dielectric layer filling the opening. The first-metal layer including at least a doped metal portion adjacent the patterned dielectric layer. The doped metal portion being doped with a second-metal. The structure is annealed to form a second-metal oxide layer adjacent the patterned dielectric layer. The first-metal layer and the second-metal oxide layer are planarized using only a electropolishing process to remove the excess of the first-metal layer and the second-metal oxide layer from over the patterned dielectric layer and leaving a planarized metal structure within the opening.

    摘要翻译: 一种制造平面化金属结构的方法,包括以下步骤。 提供了一种结构。 在该结构上形成图案化的介电层。 所述图案化介电层具有形成在其中的开口并暴露所述结构的至少一部分。 在填充开口的图案化电介质层上形成第一金属层。 第一金属层至少包括邻近图案化介电层的掺杂金属部分。 掺杂金属部分掺杂有第二金属。 将该结构退火以形成邻近图案化介电层的第二金属氧化物层。 第一金属层和第二金属氧化物层仅使用电解抛光工艺进行平面化,以从图案化的介电层上除去过量的第一金属层和第二金属氧化物层,并在其内部留下平坦化的金属结构 开放

    Method for integrating an electrodeposition and electro-mechanical polishing process
    6.
    发明授权
    Method for integrating an electrodeposition and electro-mechanical polishing process 失效
    整合电沉积和机电抛光工艺的方法

    公开(公告)号:US06793797B2

    公开(公告)日:2004-09-21

    申请号:US10106733

    申请日:2002-03-26

    IPC分类号: C25D518

    摘要: A method for alternately electrodepositing and electro-mechanically polishing to selectively fill a semiconductor feature with metal including a) providing an anode assembly and a semiconductor wafer disposed in spaced apart relation including an electrolyte there between the semiconductor wafer including a process surface including anisotropically etched features arranged for an electrodeposition process; b) applying an electric potential across the anode assembly and the semiconductor wafer to induce an electrolyte flow at a first current density to electrodeposit a metal filling portion onto the process surface; c) reversing the electric potential to reverse the electrolyte flow at a second current density to electropolish the process surface in an electropolishing process; and, d) sequentially repeating the steps b and c to electrodeposit at least a second metal filling portion to substantially fill the anisotropically etched features.

    摘要翻译: 一种用于交替电沉积和电机械抛光以选择性地用金属填充半导体特征的方法,包括:a)提供以间隔开的关系设置的阳极组件和半导体晶片,所述阳极组件和半导体晶片在半导体晶片之间包括电解质,所述电解质包括包括各向异性蚀刻特征 安排电沉积过程; b)在阳极组件和半导体晶片之间施加电位以在第一电流密度下引起电解质流动,以将金属填充部分电沉积到工艺表面上; c)逆转电位以在第二电流密度下反转电解质流动,以在电抛光过程中电镀处理表面; 以及d)依次重复步骤b和c以电沉积至少第二金属填充部分以基本上填充各向异性蚀刻的特征。

    Method for improving an electrodeposition process through use of a multi-electrode assembly
    7.
    发明授权
    Method for improving an electrodeposition process through use of a multi-electrode assembly 失效
    通过使用多电极组件来改善电沉积工艺的方法

    公开(公告)号:US06706166B2

    公开(公告)日:2004-03-16

    申请号:US10139975

    申请日:2002-05-06

    IPC分类号: C25D500

    摘要: A method for improving an electrodeposited metal film uniformity and preventing metal deposition and peeling of deposited metal from an electrode during an electrodeposition and electropolishing process including providing a first anode electrode assembly and a semiconductor wafer plating surface disposed in an electrolyte bath including a plating metal for deposition onto the semiconductor wafer plating surface; providing at least one additional anode electrode assembly including the plating metal disposed peripheral to the first anode electrode assembly for selectively applying the cathodic electrical potential during an electropolishing process; and, periodically alternating between an electrodeposition process and electropolishing process with respect to the semiconductor wafer plating surface such that the plating metal is preferentially plated onto the at least one additional electrode assembly.

    摘要翻译: 一种在电沉积和电解抛光过程中改善电沉积金属膜均匀性和防止金属沉积和从电极剥离的方法,包括提供第一阳极电极组件和半导体晶片电镀表面,该表面设置在包括电镀金属的电解液中 沉积到半导体晶片电镀表面上; 提供至少一个额外的阳极电极组件,其包括设置在所述第一阳极电极组件周围的电镀金属,用于在电抛光工艺期间选择性地施加阴极电位; 并且在相对于半导体晶片电镀表面的电沉积工艺和电解抛光工艺之间周期性地交替,使得电镀金属优先地镀在至少一个附加电极组件上。

    Method to improve palanarity of electroplated copper
    10.
    发明申请
    Method to improve palanarity of electroplated copper 审中-公开
    提高电镀铜质量的方法

    公开(公告)号:US20060189127A1

    公开(公告)日:2006-08-24

    申请号:US11410229

    申请日:2006-04-24

    IPC分类号: H01L21/44

    摘要: Narrow trenches in a substrate tend to fill more rapidly than wide trenches This results in a non-planar surface once all trenches have been filled. The present invention solves this problem by performing the electro-deposition in two steps. The plating bath used during the first step, is optimized for filling narrow trenches while the plating bath used during the second step, is optimized for filling wide trenches. The net result is a final layer having a planar surface, with all trenches being properly filled.

    摘要翻译: 衬底中的窄沟槽倾向于比宽沟槽更快地填充。这导致一旦所有沟槽都被填充,就会形成非平面表面。 本发明通过两步进行电沉积来解决这个问题。 在第一步骤期间使用的电镀槽在针对第二步骤期间使用的电镀槽进行优化以优化用于填充窄沟槽的情况下进行优化,以优化填充宽的沟槽。 最终的结果是具有平坦表面的最终层,其中所有的沟槽被正确填充。