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    • 2. 发明申请
    • PLASMA PROCESSING SYSTEMS AND STRUCTURES HAVING SLOPED CONFINEMENT RINGS
    • 等离子体加工系统和结构具有宽度的限制环
    • US20160289827A1
    • 2016-10-06
    • US14675529
    • 2015-03-31
    • Lam Research Corporation
    • Edward AugustyniakYukinori Sakiyama, ITaide TanFayaz Shaikh
    • C23C16/458
    • C23C16/4585C23C16/5096C23C16/52
    • A plasma chamber includes a pedestal, an upper electrode, and an annular structure. The pedestal has a central region to support a wafer and a step region that circumscribes the central region. A sloped region circumscribes the step region, with the sloped region having a top surface that slopes downward from the step region such that a vertical distance between the inner boundary of the top surface and the central region is less than a vertical distance between the outer boundary of the top surface and the central region. The upper electrode is coupled to a radio frequency power supply. An inner perimeter of the annular structure is defined to circumscribe the central region of the pedestal when the annular structure is disposed over the pedestal, and a portion of the annular structure has a thickness that increases with a radius of the annular structure.
    • 等离子体室包括基座,上电极和环形结构。 基座具有支撑晶片的中心区域和限制中心区域的台阶区域。 倾斜区域围绕台阶区域,其中倾斜区域具有从台阶区域向下倾斜的顶表面,使得顶表面的内边界与中心区域之间的垂直距离小于外边界之间的垂直距离 的顶面和中心区域。 上电极耦合到射频电源。 当环形结构设置在基座上方时,环形结构的内周被限定为围绕基座的中心区域,并且环形结构的一部分具有随环形结构的半径而增加的厚度。
    • 9. 发明申请
    • Separation of Plasma Suppression and Wafer Edge to Improve Edge Film Thickness Uniformity
    • 分离等离子体抑制和晶圆边缘以改善边缘膜厚度均匀性
    • US20170002465A1
    • 2017-01-05
    • US14788621
    • 2015-06-30
    • Lam Research Corporation
    • Fayaz ShaikhTaide Tan
    • C23C16/455C23C16/505C23C16/458H01J37/32
    • A chamber for use in implementing a deposition process includes a pedestal for supporting a semiconductor wafer. A silicon ring is disposed over the pedestal and surrounds the semiconductor wafer. The silicon ring has a ring thickness that approximates a semiconductor wafer thickness. The silicon ring has an annular width that extends a process zone defined over the semiconductor wafer to an extended process zone that is defined over the semiconductor wafer and the silicon ring. A confinement ring defined from a dielectric material is disposed over the pedestal and surrounds the silicon ring. A showerhead having a central showerhead area and an extended showerhead area is also included. The central showerhead area is substantially disposed over the semiconductor wafer and the silicon ring. The extended showerhead area is substantially disposed over the confinement ring. The annular width of the silicon ring enlarges a surface area of the semiconductor wafer that is exposed and shifts non-uniformity effects of deposition materials over the semiconductor wafer from an edge of the semiconductor wafer to an outer edge of the silicon ring.
    • 用于实现沉积工艺的室包括用于支撑半导体晶片的基座。 硅环设置在基座上并且围绕半导体晶片。 硅环具有接近半导体晶片厚度的环厚度。 硅环具有将限定在半导体晶片上的工艺区域延伸到限定在半导体晶片和硅环上的扩展工艺区域的环形宽度。 由介电材料限定的限制环设置在基座上并且围绕硅环。 还设有一个带中央淋浴喷头区域和一个扩展淋浴喷头区域的淋浴喷头。 中央淋浴头区域基本上设置在半导体晶片和硅环上。 扩展的喷头区域基本上设置在限制环上。 硅环的环形宽度扩大了被暴露的半导体晶片的表面积,并且将半导体晶片上的沉积材料的不均匀效应从半导体晶片的边缘移动到硅环的外边缘。