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    • 51. 发明授权
    • Tungsten deposition process with dual-step nucleation
    • 钨沉积工艺与双步成核
    • US06358844B1
    • 2002-03-19
    • US09585183
    • 2000-06-01
    • Mei-Yun WangShau-Lin Shue
    • Mei-Yun WangShau-Lin Shue
    • H01L2144
    • H01L21/76877H01L21/28556H01L21/76876
    • A tungsten plug deposition process that incorporates a dual-step nucleation method and the semiconductor structure formed by such method are disclosed. In the tungsten plug deposition process, a first nucleation layer is formed in the via openings in the semiconductor substrate by flowing a reactant gas mixture of WF6/SiH4 at a first mix ratio between 1:1 and 1:10 in a chemical vapor deposition chamber. A second nucleation layer is then formed on top of the first nucleation layer by flowing a reactant gas mixture of WF6/SiH4 at a second mix ratio between 2:1 and 5:1 into the chemical vapor deposition chamber. A total thickness of less than 500 Å for the first and second nucleation layers is normally sufficient. The first nucleation layer formed is a silicon rich layer, or a WSix layer, while the second nucleation layer is substantially W. The present invention novel method produces tungsten plugs that have significantly improved step coverage and cumulative resistance properties, while not sacrificing any electro-migration resistance.
    • 公开了一种结合双步成核方法的钨丝塞沉积工艺和通过这种方法形成的半导体结构。 在钨插塞沉积工艺中,通过在化学气相沉积室中以1:1和1:10之间的第一混合比流过WF6 / SiH4的反应气体混合物,在半导体衬底的通路孔中形成第一成核层 。 然后通过以2:1和5:1的第二混合比将WF6 / SiH4的反应气体混合物流入化学气相沉积室,在第一成核层的顶部上形成第二成核层。 通常第一和第二成核层的总厚度小于500埃。 所形成的第一成核层是富硅层或WSix层,而第二成核层基本上是W。本发明新颖的方法生产出具有显着改善的台阶覆盖率和累积电阻特性的钨丝塞,同时不牺牲任何电 - 迁移阻力。
    • 52. 发明授权
    • Method for making low-resistance silicide contacts between closely spaced electrically conducting lines for field effect transistors
    • 用于场效应晶体管的紧密间隔的导电线之间制造低电阻硅化物接触的方法
    • US06451701B1
    • 2002-09-17
    • US09993068
    • 2001-11-14
    • Mei-Yun WangShwangming JengShau-Lin Shue
    • Mei-Yun WangShwangming JengShau-Lin Shue
    • H01L21425
    • H01L29/665H01L21/28518H01L21/31155
    • A method for making reliable low-resistance contacts between closely spaced FET gate electrodes having high-aspect-ratio spacings. Polysilicon gate electrodes are formed. A conformal insulating layer is deposited and anisotropically etched back to form sidewall spacers on the gate electrodes. During conventional etch-back, the etch rate of the insulating layer between the closely spaced gate electrodes is slower resulting in a residual oxide that prevents the formation of reliable low-resistance contacts. This residual oxide requires an overetch in a hydrofluoric acid solution prior to forming silicide contacts. The wet overetch results in device degradation. A nitrogen or germanium implant is used to amorphize the oxide and to increase the wet etch rate of the residual oxide. Using this amorphization the wet etch that is commonly used as a pre-clean prior to forming silicide contacts can be used to remove the residual silicon oxide without overetching. The implant also results in a smoother interface between the silicide and the silicon substrate, which results in lower sheet resistance.
    • 一种用于在具有高纵横比间隔的紧密间隔的FET栅电极之间进行可靠的低电阻接触的方法。 形成多晶硅栅电极。 沉积保形绝缘层并各向异性地回蚀以在栅电极上形成侧壁间隔物。 在传统的回蚀期间,绝缘层在紧密间隔的栅电极之间的蚀刻速率较慢,导致残留的氧化物阻止形成可靠的低电阻触点。 在形成硅化物接触之前,该残余氧化物需要在氢氟酸溶液中进行过蚀刻。 湿过滤会导致设备退化。 氮或锗植入物用于使氧化物非晶化并增加残余氧化物的湿蚀刻速率。 使用这种非晶化,通常在形成硅化物接触之前通常用作预清洁的湿法蚀刻可以用于除去剩余的氧化硅而不进行过蚀刻。 该植入物还导致硅化物和硅衬底之间更平滑的界面,这导致较低的薄层电阻。
    • 57. 发明授权
    • Method for thinning a wafer
    • 减薄晶片的方法
    • US08252682B2
    • 2012-08-28
    • US12704695
    • 2010-02-12
    • Ku-Feng YangWeng-Jin WuHsin-Hsien LuChia-Lin YuChu-Sung ShihFu-Chi HsuShau-Lin Shue
    • Ku-Feng YangWeng-Jin WuHsin-Hsien LuChia-Lin YuChu-Sung ShihFu-Chi HsuShau-Lin Shue
    • H01L21/44H01L23/48
    • H01L21/76898H01L2224/02372
    • A method for thinning a wafer is provided. In one embodiment, a wafer is provided having a plurality of semiconductor chips, the wafer having a first side and a second side opposite the first side, wherein each of the chips includes a set of through silicon vias (TSVs), each of the TSVs substantially sealed by a liner layer and a barrier layer. A wafer carrier is provided for attaching to the second side of the wafer. The first side of the wafer is thinned and thereafer recessed to partially expose portions of the liner layers, barrier layers and the TSVs protruding from the wafer. An isolation layer is deposited over the first side of the wafer and the top portions of the liner layers, barrier layers and the TSVs. Thereafter, an insulation layer is deposited over the isolation layer. The insulation layer is then planarized to expose top portions of the TSVs. A dielectric layer is deposited over the planarized first side of the wafer. One or more electrical contacts are formed in the dielectric layer for electrical connection to the exposed one or more TSVs.
    • 提供了一种用于薄化晶片的方法。 在一个实施例中,提供具有多个半导体芯片的晶片,晶片具有第一侧和与第一侧相对的第二侧,其中每个芯片包括一组穿通硅通孔(TSV),每个TSV 基本上被衬垫层和阻挡层密封。 提供晶片载体以附接到晶片的第二侧。 晶片的第一侧变薄并且凹陷以部分地暴露衬里层,阻挡层和从晶片突出的TSV的部分。 隔离层沉积在晶片的第一侧和衬垫层,阻挡层和TSV的顶部之上。 此后,绝缘层沉积在隔离层上。 然后将绝缘层平坦化以暴露TSV的顶部。 电介质层沉积在晶片的平坦化第一侧上。 在电介质层中形成一个或多个电触头,用于与暴露的一个或多个TSV电连接。
    • 59. 发明授权
    • Semiconductor memory structures
    • 半导体存储器结构
    • US07888719B2
    • 2011-02-15
    • US11752736
    • 2007-05-23
    • Shau-Lin ShueChao-An Jong
    • Shau-Lin ShueChao-An Jong
    • H01L29/94H01L29/00
    • H01L45/144H01L27/2436H01L45/06H01L45/1233H01L45/126H01L45/16
    • A semiconductor structure includes a first conductive layer coupled to a transistor. A first dielectric layer is over the first conductive layer. A second conductive layer is within the first dielectric layer, contacting a portion of a top surface of the first conductive layer. The second conductive layer includes a cap portion extending above a top surface of the first dielectric layer. A first dielectric spacer is between the first dielectric layer and the second conductive layer. A phase change material layer is above a top surface of the second conductive layer. A third conductive layer is over the phase change material layer. A second dielectric layer is over the first dielectric layer. A second dielectric spacer is on a sidewall of the cap portion, wherein a thermal conductivity of the second dielectric spacer is less than that of the first dielectric layer or that of the second dielectric layer.
    • 半导体结构包括耦合到晶体管的第一导电层。 第一电介质层在第一导电层之上。 第二导电层在第一介电层内,与第一导电层的顶表面的一部分接触。 第二导电层包括在第一介电层的顶表面上方延伸的盖部分。 第一介电隔离物在第一介电层和第二导电层之间。 相变材料层在第二导电层的顶表面之上。 第三导电层在相变材料层之上。 第二电介质层在第一介电层上。 第二电介质间隔物位于帽部分的侧壁上,其中第二电介质间隔物的热导率小于第一电介质层或第二电介质层的热导率。