SELECTIVE METAL REMOVAL FOR CONDUCTIVE INTERCONNECTS IN INTEGRATED CIRCUITRY
    4.
    发明申请
    SELECTIVE METAL REMOVAL FOR CONDUCTIVE INTERCONNECTS IN INTEGRATED CIRCUITRY 审中-公开
    集成电路中导电互连的选择性金属去除

    公开(公告)号:WO2018063376A1

    公开(公告)日:2018-04-05

    申请号:PCT/US2016/054919

    申请日:2016-09-30

    Abstract: Techniques for selectively removing a metal or conductive material during processing of a semiconductor die for high-voltage applications are provided. In some embodiments, the techniques treat a metallized semiconductor die to transfer a feature from a patterned photoresist layer deposited on the metallized semiconductor die. In addition, the patterned metallized semiconductor die can be subjected to an etch process to remove an amount of metal according to the feature in the pattern, resulting in a treated metallized semiconductor die that defines an opening adjacent to at least a pair of neighboring metal interconnects in the die. The treated metallized semiconductor die can be further treated to backfill the opening with a dielectric material, resulting in a metallized semiconductor die having a backfilled dielectric member. Such a metallized semiconductor die can be further processed according to a process of record until metallization, after which additional selective removal of another amount of metal can be implemented. Semiconductor dies having neighboring metal interconnects separated by backfilled dielectric regions also are provided.

    Abstract translation: 提供了用于在用于高电压应用的半导体管芯的处理期间选择性地去除金属或导电材料的技术。 在一些实施例中,这些技术处理金属化半导体管芯以从沉积在金属化半导体管芯上的图案化光致抗蚀剂层转移特征。 另外,可以对图案化的金属化半导体管芯进行蚀刻工艺以根据图案中的特征去除一定量的金属,从而产生处理过的金属化半导体管芯,该处理后的金属化半导体管芯限定邻近至少一对相邻金属互连 在死亡。 处理后的金属化半导体管芯可以进一步处理以用介电材料回填开口,从而产生具有回填介电部件的金属化半导体管芯。 可以根据记录过程进一步处理这种金属化的半导体管芯,直到金属化,之后可以实施额外的选择性去除另一量的金属。 还提供了具有由回填介电区域分开的相邻金属互连的半导体管芯。

    INTERCONNECTS PROVIDED BY SUBTRACTIVE METAL SPACER BASED DEPOSITION

    公开(公告)号:WO2018111289A1

    公开(公告)日:2018-06-21

    申请号:PCT/US2016/067069

    申请日:2016-12-16

    CPC classification number: H01L21/0337 H01L21/76885 H01L23/5283

    Abstract: Disclosed herein are methods for manufacturing a metallization stack including a plurality of electrically conductive interconnects by subtractive metal spacer based deposition, and related semiconductor devices. For example, in some embodiments, a method of forming a semiconductor device may include providing a pattern of sacrificial elements over an interconnect support layer, depositing an electrically conductive material on sidewalls of the sacrificial elements, and removing the sacrificial elements so that the remaining portions of the electrically conductive material form a pattern of electrically conductive elements which can serve as interconnects of a metallization stack of the semiconductor device.

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