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    • 4. 发明授权
    • Silicon carbide deposition for use as a low-dielectric constant anti-reflective coating
    • 碳化硅沉积用作低介电常数抗反射涂层
    • US06635583B2
    • 2003-10-21
    • US09219945
    • 1998-12-23
    • Christopher BencherJoe FengMei-Yee ShekChris NgaiJudy Huang
    • Christopher BencherJoe FengMei-Yee ShekChris NgaiJudy Huang
    • H01L21302
    • H01L21/0276C23C16/325C30B25/105C30B29/36H01L21/02378H01L21/02447H01L21/02529H01L21/0262H01L21/0445H01L21/314H01L21/76801H01L21/76807H01L21/76829H01L21/76834H01L23/53228H01L23/53238H01L23/5329H01L2924/0002Y10S438/931Y10S438/952H01L2924/00
    • The present invention generally provides a process for depositing silicon carbide using a silane-based material with certain process parameters that is useful for forming a suitable ARC for IC applications. The same material may also be used as a barrier layer and an etch stop, even in complex damascene structures and with high diffusion conductors such as copper as a conductive material. Under certain process parameters, a fixed thickness of the silicon carbide may be used on a variety of thicknesses of underlying layers. The thickness of the silicon carbide ARC is substantially independent of the thickness of the underlying layer for a given reflectivity, in contrast to the typical need for adjustments in the ARC thickness for each underlying layer thickness to obtain a given reflectivity. A preferred process sequence for forming a silicon carbide anti-reflective coating on a substrate, comprises introducing silicon, carbon, and a noble gas into a reaction zone of a process chamber, initiating a plasma in the reaction zone, reacting the silicon and the carbon in the presence of the plasma to form silicon carbide, and depositing a silicon carbide anti-reflective coating on a substrate in the chamber. Another aspect of the invention includes a substrate having a silicon carbide anti-reflective coating, comprising a dielectric layer deposited on the substrate and a silicon carbide anti-reflective coating having a dielectric constant of less than about 7.0 and preferably about 6.0 or less.
    • 本发明通常提供一种使用具有某些工艺参数的硅烷基材料沉积碳化硅的方法,其可用于形成用于IC应用的合适的ARC。 即使在复杂的镶嵌结构中也可以使用相同的材​​料作为阻挡层和蚀刻阻挡层,并且还可以使用诸如铜作为导电材料的高扩散导体。 在某些工艺参数下,碳化硅的固定厚度可用于各种厚度的下层。 对于给定的反射率,碳化硅ARC的厚度基本上与下层的厚度无关,相比之下,为了获得给定的反射率,每个下层厚度的ARC厚度的调整的典型需要。 用于在衬底上形成碳化硅抗反射涂层的优选工艺顺序包括将硅,碳和惰性气体引入到处理室的反应区中,在反应区中引发等离子体,使硅和碳 在等离子体的存在下形成碳化硅,以及在该腔室中的基底上沉积碳化硅抗反射涂层。 本发明的另一方面包括具有碳化硅抗反射涂层的基底,其包括沉积在基底上的电介质层和介电常数小于约7.0,优选约6.0或更小的碳化硅抗反射涂层。
    • 7. 发明申请
    • Methods and devices to reduce defects in dielectric stack structures
    • 减少电介质堆叠结构缺陷的方法和装置
    • US20050045099A1
    • 2005-03-03
    • US10650941
    • 2003-08-27
    • Christopher BencherLee Luo
    • Christopher BencherLee Luo
    • C23C16/00C23C16/02C23C16/44C23C16/56
    • C23C16/4401C23C16/0245C23C16/56
    • A variety of techniques may be employed alone or in combination to reduce the incidence of defects arising in dielectric stack structures formed by chemical vapor deposition (CVD). Incidence of a first defect type attributable to reaction between an unreacted species of a prior CVD step and reactants of a subsequent CVD step, is reduced by exposing a freshly-deposited dielectric layer to a plasma before any additional layers are deposited. Incidence of a second defect type attributable to the presence of incompletely vaporized CVD liquid precursor material, is reduced by exposing the freshly-deposited dielectric layer to a plasma, and/or by continuing the flow of carrier gas through an injection valve for a period beyond the conclusion of the CVD step.
    • 各种技术可以单独使用或组合使用以减少通过化学气相沉积(CVD)形成的介电堆叠结构中产生的缺陷的发生率。 通过在沉积任何另外的层之前将新沉积的介电层暴露于等离子体,可以减少归因于现有CVD步骤的未反应物质与随后的CVD步骤的反应物之间的反应的第一缺陷类型的发生。 归因于存在不完全蒸发的CVD液体前体材料的第二种缺陷类型的发生通过将新沉积的介电层暴露于等离子体和/或通过使载气通过喷射阀的流动持续一段时间来减少 CVD步骤的结论。