Process sequence to achieve global planarity using a combination of fixed abrasive and high selectivity slurry for pre-metal dielectric CMP applications
    5.
    发明授权
    Process sequence to achieve global planarity using a combination of fixed abrasive and high selectivity slurry for pre-metal dielectric CMP applications 失效
    使用固定研磨剂和高选择性浆料的组合来实现全金属平面度的工艺顺序用于预金属介电CMP应用

    公开(公告)号:US08211325B2

    公开(公告)日:2012-07-03

    申请号:US12757767

    申请日:2010-04-09

    摘要: A method and apparatus for polishing or planarizing a pre-metal dielectric layer by a chemical mechanical polishing process are provided. The method comprises providing a semiconductor substrate having feature definitions formed thereon, forming a pre-metal dielectric layer over the substrate, wherein the as-deposited pre-metal dielectric layer has an uneven surface topography, and planarizing the uneven surface topography of the pre-metal dielectric layer using chemical mechanical polishing techniques, wherein planarizing the uneven surface topography comprises polishing the pre-metal dielectric layer with a fixed abrasive polishing pad and a first polishing composition to remove a bulk portion of the pre-metal dielectric layer and achieve a first predetermined planarity, and polishing the pre-metal dielectric layer with a non-abrasive polishing pad and high selectivity slurry to remove a residual portion of the pre-metal dielectric and achieve a second predetermined planarity.

    摘要翻译: 提供了一种通过化学机械抛光工艺抛光或平坦化预金属介电层的方法和设备。 该方法包括提供其上形成有特征定义的半导体衬底,在衬底上形成预金属介电层,其中所沉积的预金属介电层具有不平坦的表面形貌,并且平坦化前预处理电介质层的不平坦表面形貌, 使用化学机械抛光技术的金属介电层,其中平坦化所述不平坦表面形貌包括用固定的研磨抛光垫和第一抛光组合物抛光所述预金属介电层,以去除所述金属前介电层的主体部分并实现第一 预定的平面度,以及用非磨料抛光垫和高选择性浆料抛光预金属介电层,以去除前金属电介质的剩余部分并实现第二预定平面度。

    PROCESS SEQUENCE TO ACHIEVE GLOBAL PLANARITY USING A COMBINATION OF FIXED ABRASIVE AND HIGH SELECTIVITY SLURRY FOR PRE-METAL DIELECTRIC CMP APPLICATIONS
    7.
    发明申请
    PROCESS SEQUENCE TO ACHIEVE GLOBAL PLANARITY USING A COMBINATION OF FIXED ABRASIVE AND HIGH SELECTIVITY SLURRY FOR PRE-METAL DIELECTRIC CMP APPLICATIONS 失效
    使用固定磨料和高选择性浆液的组合实现全球平面化的前处理顺序用于预金属介电CMP应用

    公开(公告)号:US20100285666A1

    公开(公告)日:2010-11-11

    申请号:US12757767

    申请日:2010-04-09

    IPC分类号: H01L21/306

    摘要: A method and apparatus for polishing or planarizing a pre-metal dielectric layer by a chemical mechanical polishing process are provided. The method comprises providing a semiconductor substrate having feature definitions formed thereon, forming a pre-metal dielectric layer over the substrate, wherein the as-deposited pre-metal dielectric layer has an uneven surface topography, and planarizing the uneven surface topography of the pre-metal dielectric layer using chemical mechanical polishing techniques, wherein planarizing the uneven surface topography comprises polishing the pre-metal dielectric layer with a fixed abrasive polishing pad and a first polishing composition to remove a bulk portion of the pre-metal dielectric layer and achieve a first predetermined planarity, and polishing the pre-metal dielectric layer with a non-abrasive polishing pad and high selectivity slurry to remove a residual portion of the pre-metal dielectric and achieve a second predetermined planarity.

    摘要翻译: 提供了一种通过化学机械抛光工艺抛光或平坦化预金属介电层的方法和设备。 该方法包括提供其上形成有特征定义的半导体衬底,在衬底上形成预金属介电层,其中所沉积的预金属介电层具有不平坦的表面形貌,并且平坦化前预处理电介质层的不平坦表面形貌, 使用化学机械抛光技术的金属介电层,其中平坦化所述不平坦表面形貌包括用固定的研磨抛光垫和第一抛光组合物抛光所述预金属介电层,以去除所述金属前介电层的主体部分并实现第一 预定的平面度,以及用非磨料抛光垫和高选择性浆料抛光预金属介电层,以去除前金属电介质的剩余部分并实现第二预定平面度。