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SHF: Small: Collaborative Research: Design for Manufacturability for 3D ICs with Through Silicon Vias

SHF: Small: Collaborative Research: Design for Manufacturability for 3D ICs with Through Silicon Vias
SHF:小型:协作研究:具有硅通孔的 3D IC 的可制造性设计
批准号:
1018750
负责人:
David Pan
金额:
$20.0万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2010
资助国家:
美国
项目状态:
已结题
起止时间:
2010-09-01 至 2015-08-31

项目摘要

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中文摘要
翻译
通硅通孔(TSV)提供了在3D集成电路中以精细粒度在多个晶片上排列异构组件的可能性。这可以显著减少总体导线长度、延迟、功率和外形尺寸。然而,与其他布局对象相比,tsv的尺寸较大,导致其各层密度分布明显不均匀。这种密度问题预计会在化学机械抛光(CMP)过程中造成麻烦,需要tsv敏感的解决方案。此外,在TSV制造和电路运行过程中,TSV铜与硅之间的CTE(热膨胀系数)失配会对附近的器件产生显著的热机械应力。这反过来又影响器件的时序和功率特性。tsv也会影响衬底和器件的机械可靠性。然而,对于改进基于tsv的3D集成电路的可制造性需要什么样的设计工具和方法变化,人们知之甚少。本项目将研究3D IC集成的三个关键DFM/DFR领域,即TSV诱发应力效应及其对整体电路时序和功率的影响,TSV对CMP和光刻的影响,以及TSV诱发可靠性。该项目的成功完成将有助于我们深入了解3D集成电路和TSV技术的可制造性和可靠性问题,并开发有效的物理设计解决方案来克服这些问题。该提案要求来自可制造性和可靠性建模、仿真和验证领域的研究人员与来自3D集成电路和物理设计领域的研究人员之间进行强有力的合作。
英文摘要
Through-Silicon-Via (TSV) provides the possibility of arranging heterogeneous components across multiple dies at a fine level of granularity in 3D ICs. This can result in significant decrease in the overall wire length, delay, power, and form factor. Primarily due to their large size compared with other layout objects, however, TSVs cause significant non-uniform density distribution in various layers. This density issue is expected to cause trouble during chemical mechanical polishing (CMP) and require TSV-aware solutions. In addition, the CTE (coefficient of thermal expansion) mismatch between TSV copper and silicon causes significant thermal mechanical stress to the devices nearby during TSV manufacturing and circuit operation. This in turn affects the timing and power characteristics of the devices. The mechanical reliability of the substrate and devices are also affected by TSVs. However, little is known on what design tool and methodology changes are required to improve the manufacturability of TSV-based 3D ICs. This project would investigate three key DFM/DFR areas specific to 3D IC integration, namely, TSV-induced stress effect and its impact to the overall circuit timing and power, TSV impact to CMP and lithography, and TSV-induced reliability. Successful completion of the project would help us to gain in-depth understanding of manufacturability and reliability issues with 3D ICs and TSV technology and develop effective physical design solutions to overcome these issues. The proposal calls for a very strong collaboration between the researchers from the manufacturability and reliability modeling, simulation, and validation area and the researchers from circuit and physical design area for 3D ICs.
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