Method of chemical mechanical planarization using a water rinse to
prevent particle contamination
    1.
    发明授权
    Method of chemical mechanical planarization using a water rinse to prevent particle contamination 失效
    使用水冲洗的化学机械平面化方法以防止颗粒污染

    公开(公告)号:US6071816A

    公开(公告)日:2000-06-06

    申请号:US921131

    申请日:1997-08-29

    CPC分类号: H01L21/32115

    摘要: A method of chemical mechanical planarization of a semiconductor device provides a semiconductor device having a device front surface and a device back surface with the device front surface being a top surface of a second metal layer. A first planarizing step planarizes the device front surface with a first medium to expose a device second front surface, where the first medium comprises a first abrasive component and a first chemical solution. A rinsing step then rinses the device back surface with water. A second planarizing step then planarizes the device second front surface with a second medium where the second medium comprises a second abrasive component and a second chemical solution.

    摘要翻译: 半导体器件的化学机械平坦化的方法提供了具有器件正面和器件背面的半导体器件,器件前表面是第二金属层的顶表面。 第一平面化步骤用第一介质平坦化装置前表面以暴露装置第二前表面,其中第一介质包括第一研磨部件和第一化学溶液。 冲洗步骤然后用水冲洗设备背面。 第二平面化步骤然后用第二介质平面化设备第二前表面,其中第二介质包括第二研磨组分和第二化学溶液。

    Chemical mechanical polishing (CMP) slurry for polishing copper
interconnects which use tantalum-based barrier layers
    3.
    发明授权
    Chemical mechanical polishing (CMP) slurry for polishing copper interconnects which use tantalum-based barrier layers 失效
    用于抛光使用钽基阻挡层的铜互连的化学机械抛光(CMP)浆料

    公开(公告)号:US6001730A

    公开(公告)日:1999-12-14

    申请号:US954191

    申请日:1997-10-20

    摘要: A method for forming a copper interconnect on an integrated circuit (IC) begins by forming a dielectric layer (20) having an opening. A tantalum-based barrier layer (21), such as TaN or TaSiN, is formed within the opening in the layer (20). A copper layer (22) is formed over the barrier layer (21). A first CMP process is used to polish the copper (22) to expose portions of the barrier (21). A second CMP process which is different from the first CMP process is then used to polish exposed portions of the layer (21) faster than the dielectric layer (20) or the copper layer (22). After this two-step CMP process, a copper interconnect having a tantalum-based barrier is formed across the integrated circuit substrate (12).

    摘要翻译: 在集成电路(IC)上形成铜互连的方法通过形成具有开口的电介质层(20)开始。 在层(20)的开口内形成有TaN或TaSiN等钽系阻挡层(21)。 在阻挡层(21)的上方形成铜层(22)。 第一CMP工艺用于抛光铜(22)以暴露阻挡层(21)的部分。 然后使用与第一CMP工艺不同的第二CMP工艺来比电介质层(20)或铜层(22)更快地抛光层(21)的暴露部分。 在该两步CMP工艺之后,跨越集成电路基板(12)形成具有钽基阻挡层的铜互连。

    Method and apparatus for CMP conditioning
    4.
    发明授权
    Method and apparatus for CMP conditioning 有权
    CMP调理方法和装置

    公开(公告)号:US09162344B2

    公开(公告)日:2015-10-20

    申请号:US13785845

    申请日:2013-03-05

    申请人: Rajeev Bajaj

    发明人: Rajeev Bajaj

    摘要: A polishing pad conditioning apparatus includes a laser beam generating unit for providing a laser beam, a fluid delivery system for providing a fluid stream and a vacuum line for removing debris. The laser beam may directly impinge on a surface of a polishing pad thereby creating cutting action, while an atomized fluid stream provides cooling and pad debris along with fluid are removed thru the vacuum line. Alternatively, the laser beam may be combined with the atomized fluid stream in a region above the pad surface to substantially impart part of its energy to the fluid stream, generating high energy droplets which provide “cool” cutting action on the pad surface.

    摘要翻译: 抛光垫调节装置包括用于提供激光束的激光束产生单元,用于提供流体流的流体输送系统和用于去除碎屑的真空管线。 激光束可以直接冲击抛光垫的表面,从而产生切割作用,而雾化的流体流提供冷却和垫片碎屑以及流体通过真空管线被去除。 或者,激光束可以与垫表面上方的区域中的雾化流体流组合,以将其能量的一部分基本上赋予流体流,产生在焊盘表面上提供“冷”切割作用的高能量液滴。

    Electro-chemical mechanical planarization pad with uniform polish performance
    6.
    发明授权
    Electro-chemical mechanical planarization pad with uniform polish performance 有权
    电化学机械平面化垫具有均匀的抛光性能

    公开(公告)号:US07815778B2

    公开(公告)日:2010-10-19

    申请号:US11562310

    申请日:2006-11-21

    申请人: Rajeev Bajaj

    发明人: Rajeev Bajaj

    CPC分类号: B24B37/20

    摘要: A polishing pad includes at least one conductive polishing element supported by a compressible under layer having conductive patterning therein, the conductive patterning adapted to permit coupling of a potential to the conductive polishing element; a guide plate above the compressible under layer, the guide plate having a hole through which the polishing element passes and further having a cathodic element connected thereto; and a slurry distribution layer adhered to the guide plate opposite the compressible under layer. The polishing pad may further include a proton exchange membrane placed over the cathodic element. A semiconductor wafer having a metal film thereon may be polished using the polishing pad by placing the wafer in contact with the polishing element, applying anodic current to the polishing element and cathodic current to the cathodic element, and polishing with an anodic solution. For copper films, a sulfuric acid-copper sulfate solution may be used.

    摘要翻译: 抛光垫包括由其中具有导电图案化的可压缩底层支撑的至少一个导电抛光元件,所述导电图案适于允许将电位耦合到导电抛光元件; 在可压缩底层上方的引导板,所述引导板具有用于抛光元件通过的孔,并且还具有连接到其上的阴极元件; 以及粘附到与可压缩底层相对的引导板的浆料分布层。 抛光垫还可以包括置于阴极元件上的质子交换膜。 可以使用抛光垫将晶片与抛光元件接触,向抛光元件施加阳极电流,向阴极元件施加阴极电流,并用阳极溶液抛光,可以抛光其上具有金属膜的半导体晶片。 对于铜膜,可以使用硫酸 - 硫酸铜溶液。

    Nanospring
    7.
    发明授权
    Nanospring 失效
    纳米螺旋

    公开(公告)号:US07759165B1

    公开(公告)日:2010-07-20

    申请号:US12395681

    申请日:2009-03-01

    申请人: Rajeev Bajaj

    发明人: Rajeev Bajaj

    IPC分类号: H01L21/00

    CPC分类号: B81C1/0019 B81B2207/07

    摘要: A nanospring is formed by first forming a stack of alternating layers of materials which have different susceptibilities to a selective etch solution. The stack is formed over a substrate and is subsequently etched with a substantially non-isotropic etch to create a via having substantially straight sidewalls. The sidewalls of the via are exposed to the selective etch solution, thereby creating irregular sidewalls of the via. A metal film is conformally deposited within the via, and, after excess metal is removed, the stack of alternating layers of materials is etched to expose remaining portions of the conformably deposited film, which comprise the nanospring.

    摘要翻译: 通过首先形成具有与选择性蚀刻溶液不同的敏感性的交替层材料层来形成纳米纺丝。 堆叠形成在衬底上,随后用基本上非各向同性的蚀刻进行蚀刻,以形成具有基本上直的侧壁的通孔。 通孔的侧壁暴露于选择性蚀刻溶液,从而产生通孔的不规则侧壁。 在通孔内共形沉积金属膜,并且在去除多余的金属之后,蚀刻交替的材料层的叠层以暴露构成纳米弹簧的顺应沉积膜的剩余部分。

    POLISHING PAD AND METHOD OF USE
    8.
    发明申请
    POLISHING PAD AND METHOD OF USE 审中-公开
    抛光垫及其使用方法

    公开(公告)号:US20090266002A1

    公开(公告)日:2009-10-29

    申请号:US12431119

    申请日:2009-04-28

    申请人: Rajeev Bajaj

    发明人: Rajeev Bajaj

    IPC分类号: B24D3/00 B29C45/00

    摘要: Polishing pads of varying compositions for use in chemical mechanical planarization (CMP) and methods of manufacturing and using such pads. Examples of such polishing pads include two phases, one of which may be a high modulus, low wear material that maintains a stable texture when subject to a conditioning process (e.g., polyoxymethylene, Delrin, polyamide-imide (Torlon), polyetheretherketone (PEEK), and/or polysulfone), and the other of which may be a material having a polishing ability (e.g., a polyurethane material).

    摘要翻译: 用于化学机械平面化(CMP)的不同组成的抛光垫以及制造和使用这种垫的方法。 这种抛光垫的实例包括两个相,其中一个可以是在经受调节过程(例如,聚甲醛,Delrin,聚酰胺 - 酰亚胺(Torlon),聚醚醚酮(PEEK))时保持稳定织构的高模量,低磨损材料, ,和/或聚砜),另一种可以是具有抛光能力的材料(例如,聚氨酯材料)。

    CHEMICAL MECHANICAL PLANARIZATION PAD AND METHOD OF USE THEREOF
    9.
    发明申请
    CHEMICAL MECHANICAL PLANARIZATION PAD AND METHOD OF USE THEREOF 审中-公开
    化学机械平面板及其使用方法

    公开(公告)号:US20080318505A1

    公开(公告)日:2008-12-25

    申请号:US11968442

    申请日:2008-01-02

    申请人: Rajeev Bajaj

    发明人: Rajeev Bajaj

    IPC分类号: B24D11/00

    CPC分类号: B24B37/26

    摘要: A web-style polishing pad includes a guide layer through which individual polishing elements protrude on one side and a flexible under-layer attached to the other side. The polishing elements may be affixed at their base to the compressible under-layer and pass through corresponding holes in the guide layer so as to be maintained and translatable in a substantially orthogonal orientation with respect to a plane defined by the guide layer.

    摘要翻译: 网状抛光垫包括引导层,各个抛光元件通过该引导层在一侧突出,并且柔性底层附着到另一侧。 抛光元件可以在它们的底部固定到可压缩底层并穿过引导层中的相应的孔,以便相对于由引导层限定的平面基本正交的方向保持和平移。

    Electro-Method and Apparatus for Improved Chemical Mechanical Planarization Pad with Uniform Polish Performance
    10.
    发明申请
    Electro-Method and Apparatus for Improved Chemical Mechanical Planarization Pad with Uniform Polish Performance 有权
    具有均匀波动性能的改进化学机械平面化垫的电子方法和装置

    公开(公告)号:US20080164153A1

    公开(公告)日:2008-07-10

    申请号:US11576942

    申请日:2005-10-05

    申请人: Rajeev Bajaj

    发明人: Rajeev Bajaj

    IPC分类号: B23H3/00 B24B29/00 B24D11/00

    CPC分类号: B23H5/08

    摘要: A polishing pad includes a guide plate having a plurality of holes therein and being affixed to a compressible under-layer; and a plurality of conducting polishing elements each affixed to the compressible under-layer and passing through a sealed contact with a proton exchange membrane and corresponding hole in the guide plate so as to be maintained in a substantially vertical orientation with respect to the compressible under-layer but being translatable in a vertical direction with respect to the guide plate. The polishing pad may also include a slurry distribution material fastened to the guide plate by an adhesive. Pad wear sensors may also be provided in the polishing pad.

    摘要翻译: 抛光垫包括其中具有多个孔并被附着在可压缩底层上的引导板; 以及多个导电抛光元件,每个导电抛光元件各自固定到可压缩底层上,并且通过与质子交换膜和引导板中的对应孔的密封接触,以相对于可压缩底层保持基本垂直的方向, 层,但可相对于导板在垂直方向上平移。 抛光垫还可以包括通过粘合剂固定到引导板的浆料分布材料。 抛光垫也可以设置垫磨损传感器。