Method to form transistors and local interconnects using a silicon nitride dummy gate technique
    1.
    发明授权
    Method to form transistors and local interconnects using a silicon nitride dummy gate technique 有权
    使用氮化硅虚拟栅极技术形成晶体管和局部互连的方法

    公开(公告)号:US06204137B1

    公开(公告)日:2001-03-20

    申请号:US09556386

    申请日:2000-04-24

    IPC分类号: H01L21336

    CPC分类号: H01L29/66545 H01L21/76224

    摘要: A new method of forming MOS transistors has been achieved. A pad oxide layer is grown. A silicon nitride layer is deposited. Trenches are etched for planned STI. A trench liner is grown inside of the trenches. A trench oxide layer is deposited filling the trenches. The trench oxide layer is polished down to complete the STI. The same silicon nitride layer is patterned to form dummy gates. A gate liner layer is deposited. Ions are implanted to form lightly doped drain junctions. Sidewall spacers are formed adjacent to the dummy gate electrodes and the shallow trench isolations. Ions are implanted to form the drain and source junctions. An epitaxial silicon layer is grown overlying the source and drain junctions. A metal layer is deposited. The epitaxial silicon layer is converted into sulicide to form silicided source and drain contacts. An interlevel dielectric layer is deposited and polished down to the dummy gates. The dummy gates are etched away to form openings for the planned transistor gates. A gate oxide layer is deposited lining the transistor gate openings. A gate electrode layer is deposited to fill the transistor gate openings. The gate electrode layer is patterned to complete the transistor gates.

    摘要翻译: 已经实现了形成MOS晶体管的新方法。 生长衬垫氧化物层。 沉积氮化硅层。 沟槽蚀刻为计划的STI。 在沟槽内生长沟槽衬垫。 沉积填充沟槽的沟槽氧化物层。 将沟槽氧化物层抛光以完成STI。 将相同的氮化硅层图案化以形成伪栅极。 沉积栅极衬垫层。 植入离子以形成轻掺杂的漏极结。 侧壁间隔件形成在与虚拟栅极电极和浅沟槽隔离件相邻处。 植入离子以形成漏极和源极结。 生长在源极和漏极结上方的外延硅层。 沉积金属层。 将外延硅层转化为硅化物以形成硅化源极和漏极触点。 将层间电介质层沉积并抛光到虚拟栅极。 蚀刻掉虚拟栅极以形成预定晶体管栅极的开口。 在晶体管栅极开口上沉积栅极氧化物层。 沉积栅极电极层以填充晶体管栅极开口。 图案化栅极电极层以完成晶体管栅极。

    Method to form MOS transistors with a common shallow trench isolation and interlevel dielectric gap fill
    2.
    发明授权
    Method to form MOS transistors with a common shallow trench isolation and interlevel dielectric gap fill 有权
    用于形成具有公共浅沟槽隔离和层间介质间隙填充的MOS晶体管的方法

    公开(公告)号:US06281082B1

    公开(公告)日:2001-08-28

    申请号:US09524526

    申请日:2000-03-13

    IPC分类号: H01L2176

    CPC分类号: H01L29/66545 H01L21/76237

    摘要: A new method of forming MOS transistors in the manufacture of an integrated circuit device has been achieved. A semiconductor substrate is provided. A pad oxide layer is deposited. A silicon nitride layer is deposited. Trenches are patterned for planned shallow trench isolations. The sidewalls of the trenches are oxidized. A photoresist layer is deposited overlying the silicon nitride layer and filling the trenches. The photoresist layer is etched down to below the top surface of the silicon nitride layer. The silicon nitride layer is patterned to form dummy gate electrodes. Sidewall spacers are formed on the dummy gate electrodes. The photoresist layer is removed. A dielectric layer is deposited overlying the dummy gate electrodes and the trenches. The dielectric layer is polished down to the top surface of the dummy gate electrodes to thereby complete the STI and the ILD. The dummy gate electrodes are etched away. A gate oxide layer is formed. A gate electrode layer is deposited overlying the dielectric layer and filling the openings for the planned transistor gates. The gate electrode layer is polished down to form the transistor gates, and the integrated circuit is completed.

    摘要翻译: 已经实现了在制造集成电路器件中形成MOS晶体管的新方法。 提供半导体衬底。 沉积衬垫氧化物层。 沉积氮化硅层。 沟槽图案化为规划的浅沟槽隔离。 沟槽的侧壁被氧化。 沉积覆盖氮化硅层并填充沟槽的光致抗蚀剂层。 光致抗蚀剂层被蚀刻到氮化硅层的顶表面下方。 图案化氮化硅层以形成伪栅电极。 在虚拟栅电极上形成侧壁间隔物。 去除光致抗蚀剂层。 沉积覆盖在虚拟栅电极和沟槽上的电介质层。 电介质层被抛光到虚拟栅电极的顶表面,从而完成STI和ILD。 伪栅电极被蚀刻掉。 形成栅氧化层。 沉积覆盖在电介质层上的栅极电极层,并填充用于计划的晶体管栅极的开口。 将栅极电极层进行抛光以形成晶体管栅极,并且集成电路完成。

    Method for planarizing local interconnects
    3.
    发明授权
    Method for planarizing local interconnects 有权
    平面化局部互连的方法

    公开(公告)号:US6103569A

    公开(公告)日:2000-08-15

    申请号:US459730

    申请日:1999-12-13

    摘要: A method for planarizing metal plugs for device interconnections. The process begins by providing a semiconductor structure with at least one device thereon. A dielectric layer is formed over the device and the semiconductor structure. A first barrier metal layer is formed on the dielectric layer, and a sacrificial oxide layer is formed on the first barrier metal layer. The sacrificial oxide layer, the first barrier metal layer, and the dielectric layer are patterned to form contact openings. A second barrier metal layer is formed over the semiconductor structure, and a metal contact layer is formed on the second barrier metal layer. The metal contact layer and the second barrier metal layer are planarized using a first chemical mechanical polishing process and the sacrificial oxide layer is removed. The metal contact layer and the first barrier metal layer are planarized using a second chemical mechanical polishing process.

    摘要翻译: 用于平面化用于器件互连的金属插头的方法。 该过程开始于在其上提供至少一个装置的半导体结构。 在器件和半导体结构上形成介电层。 在介电层上形成第一阻挡金属层,在第一阻挡金属层上形成牺牲氧化物层。 牺牲氧化物层,第一阻挡金属层和电介质层被图案化以形成接触开口。 在半导体结构上形成第二阻挡金属层,在第二阻挡金属层上形成金属接触层。 使用第一化学机械抛光工艺对金属接触层和第二阻挡金属层进行平面化处理,并去除牺牲氧化物层。 使用第二化学机械抛光工艺将金属接触层和第一阻挡金属层平坦化。

    Method to form shallow trench isolations without a chemical mechanical polish
    4.
    发明授权
    Method to form shallow trench isolations without a chemical mechanical polish 失效
    在没有化学机械抛光的情况下形成浅沟槽隔离的方法

    公开(公告)号:US06306723B1

    公开(公告)日:2001-10-23

    申请号:US09524528

    申请日:2000-03-13

    申请人: Feng Chen Kok Hin Teo

    发明人: Feng Chen Kok Hin Teo

    IPC分类号: H01L2176

    CPC分类号: H01L21/76229

    摘要: A new method of fabricating shallow trench isolations has been achieved. No final polishing down process is needed. A silicon substrate is provided. A pad oxide layer is formed overlying the silicon substrate. A silicon nitride layer is deposited overlying the pad oxide layer. The silicon nitride layer, the pad oxide layer, and the silicon substrate are patterned to form trenches for planned shallow trench isolations. A liner oxide layer is grown overlying the semiconductor substrate is the trenches. A silicon dioxide spacer layer is deposited overlying the silicon nitride layer and the liner oxide layer to partially fill the trenches. The silicon dioxide spacer layer and the liner oxide layer are anisotropically etched to form sidewall spacers inside the trenches and to expose the bottom of said trenches. A silicon layer is selectively grown overlying the semiconductor substrate in the trenches. The silicon layer partially fills the trenches. A trench oxide layer is formed overlying the silicon layer. The silicon nitride layer is removed. The pad oxide layer is removed to complete the shallow trench isolation, and the integrated circuit device is completed.

    摘要翻译: 已经实现了制造浅沟槽隔离的新方法。 不需要最终抛光过程。 提供硅衬底。 在硅衬底上形成衬垫氧化物层。 在衬垫氧化物层上沉积氮化硅层。 图案化氮化硅层,焊盘氧化物层和硅衬底以形成用于规划的浅沟槽隔离的沟槽。 生长在半导体衬底上的衬垫氧化物层是沟槽。 沉积氮化硅层和衬垫氧化物层的二氧化硅间隔层以部分地填充沟槽。 各向异性蚀刻二氧化硅间隔层和衬垫氧化物层,以在沟槽内部形成侧壁间隔物,并露出所述沟槽的底部。 在沟槽中选择性地生长覆盖半导体衬底的硅层。 硅层部分地填充沟槽。 在硅层上形成沟槽氧化物层。 去除氮化硅层。 去除衬垫氧化物层以完成浅沟槽隔离,并且完成集成电路器件。

    Method for buffer STI scheme with a hard mask layer as an oxidation barrier
    5.
    发明授权
    Method for buffer STI scheme with a hard mask layer as an oxidation barrier 有权
    具有硬掩模层作为氧化屏障的缓冲STI方案

    公开(公告)号:US06613649B2

    公开(公告)日:2003-09-02

    申请号:US10002873

    申请日:2001-12-05

    IPC分类号: H01L2176

    CPC分类号: H01L21/76224

    摘要: A method of manufacturing a shallow trench isolation using a polishing step with reduced dishing. A pad layer, a polish stop layer, a buffer layer and a hard mask layer are formed over a substrate. The hard mask layer has a hard mask opening. We etch a trench opening in the buffer layer, the polish stop layer, the pad layer and form a trench in the substrate using the hard mask layer as an etch mask. We form an oxide trench liner layer along the sidewalls of the trench and an oxide buffer liner layer on the sidewalls of the buffer layer using a thermal oxidation. The hard mask layer prevents the oxidation of the top surface of the buffer layer during the oxidation of the oxide trench liner. This prevents the buffer layer from being consumed by the oxidation and leaves the buffer layer to act in the subsequent chemical-mechanical polish (CMP) step. Next, an insulating layer is formed at least partially filling the trench. The insulating layer is chemical-mechanical polished using the polish stop layer as a stop layer. The buffer layer acts to prevent field oxide dishing during the chemical-mechanical polish.

    摘要翻译: 使用具有减少的凹陷的抛光步骤制造浅沟槽隔离的方法。 在衬底上形成焊盘层,抛光停止层,缓冲层和硬掩模层。 硬掩模层具有硬掩模开口。 我们使用硬掩模层作为蚀刻掩模,在缓冲层,抛光停止层,焊盘层中蚀刻沟槽开口,并在衬底中形成沟槽。 我们使用热氧化沿着沟槽的侧壁和缓冲层的侧壁上的氧化物缓冲衬垫层形成氧化物沟槽衬里层。 硬掩模层防止在氧化物沟槽衬垫的氧化期间缓冲层的顶表面的氧化。 这防止缓冲层被氧化消耗,并使缓冲层在随后的化学 - 机械抛光(CMP)步骤中起作用。 接下来,形成至少部分地填充沟槽的绝缘层。 绝缘层使用抛光停止层作为停止层进行化学机械抛光。 缓冲层用于防止化学机械抛光过程中的场氧化物凹陷。

    Extended poly buffer STI scheme
    6.
    发明授权

    公开(公告)号:US07060573B2

    公开(公告)日:2006-06-13

    申请号:US09759909

    申请日:2001-01-16

    IPC分类号: H01L21/336

    CPC分类号: H01L21/76232

    摘要: A new method of forming shallow trench isolations has been described. A silicon semiconductor substrate is provided. A silicon nitride layer is deposited overlying the substrate. A polysilicon layer is deposited overlying the silicon nitride layer. An oxidation mask is deposited overlying the polysilicon layer. The oxidation mask, polysilicon layer, silicon nitride layer, and the silicon semiconductor substrate are patterned to form trenches for planned shallow trench isolations. The silicon semiconductor substrate exposed within the trenches is oxidized to form an oxide liner layer within the trenches wherein the oxidation mask prevents oxidation of the polysilicon layer. Thereafter the oxidation mask is removed. A trench oxide layer is deposited overlying the liner oxide layer and filling the trenches. The trench oxide layer and the polysilicon layer are polished down stopping at the silicon nitride layer with a polishing selectivity of oxide to polysilicon to nitride of 4:100:1 wherein dishing is avoided to complete shallow trench isolations in the manufacture of an integrated circuit device.

    Method to reduce dishing in metal chemical-mechanical polishing
    7.
    发明授权
    Method to reduce dishing in metal chemical-mechanical polishing 失效
    减少金属化学机械抛光中的凹陷的方法

    公开(公告)号:US06274485B1

    公开(公告)日:2001-08-14

    申请号:US09425310

    申请日:1999-10-25

    IPC分类号: H01L2144

    CPC分类号: H01L21/7684

    摘要: A new method of metal plug metallization utilizing a sacrificial high polishing rate layer to prevent dishing and metal residues after CMP is described. An oxide layer is provided overlying semiconductor device structures in and on a semiconductor substrate. A sacrificial high polishing rate (HPR) layer is deposited overlying the oxide layer. An opening is etched through the HPR layer and the oxide layer to one of the semiconductor device structures. A barrier layer and a metal layer are deposited over the surface of the HPR layer and within the opening. The metal layer, barrier layer, and HPR layer overlying the oxide layer are polished away by CMP. The polishing rate of the HPR layer is higher than that of the metal layer with the result that after the HPR layer is completely removed, the metal layer remaining within the opening has a convex shape. The oxide layer is over-polished until endpoint detection is received. Since the metal polishing rate is higher than the oxide polishing rate, the convex shape is made substantially planar during the over-polishing to complete metal plug metallization in the fabrication of an integrated circuit.

    摘要翻译: 描述了利用牺牲高抛光速率层以防止CMP之后的凹陷和金属残余物的金属插塞金属化的新方法。 半导体衬底上半导体器件结构上覆盖氧化物层。 牺牲高抛光速率(HPR)层沉积在氧化物层上。 通过HPR层和氧化物层将开口蚀刻到半导体器件结构之一。 阻挡层和金属层沉积在HPR层的表面上并且在开口内。 覆盖氧化物层的金属层,阻挡层和HPR层通过CMP抛光。 HPR层的抛光速率高于金属层的抛光速率,结果是在HPR层被完全去除之后,残留在开口内的金属层具有凸形状。 氧化层被过度抛光,直到接收端点检测。 由于金属抛光速率高于氧化物研磨速度,因此在制造集成电路时,在抛光过程中使凸形形状基本上平坦,以完成金属插塞金属化。

    Switch portable dock
    8.
    外观设计

    公开(公告)号:USD998609S1

    公开(公告)日:2023-09-12

    申请号:US29887604

    申请日:2023-03-22

    申请人: Feng Chen

    设计人: Feng Chen

    摘要: FIG. 1 is a front, top perspective view of a switch portable dock showing my new design.
    FIG. 2 is a front view thereof;
    FIG. 3 is a rear view thereof;
    FIG. 4 is a left side view thereof;
    FIG. 5 is a right side view thereof;
    FIG. 6 is a top view thereof;
    FIG. 7 is a bottom view thereof;
    FIG. 8 is a rear, bottom perspective view; and,
    FIG. 9 is a front perspective view thereof, showing the switch portable dock in an open state of use.
    The broken lines in the drawings depict portions of the switch portable dock that form no part of the claimed design.