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2.5D集成电路中低阻硅通孔的电学性能研究

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2.5D集成电路中低阻硅通孔的电学性能研究
Modeling and Analyzing the Electrical Properties of Low Resistivity Silicon Through Silicon Via (TSV) in 2.5D Integrated Circuit
投稿时间:2016-03-15
DOI:10.15918/j.tbit1001-0645.2017.02.016
中文关键词:三维集成电路转接层硅通孔低阻硅
English Keywords:three dimensional integrationinterposerthrough silicon vialow resistivity silicon
基金项目:国家自然科学基金资助项目(61404008,61574016);"111"引智计划资助项目(B14010);北京理工大学基础研究基金资助项目(20130542015)
作者单位E-mail
王士伟北京理工大学 光电学院, 北京 100081
刘斌北京理工大学 光电学院, 北京 100081
卢威北京理工大学 光电学院, 北京 100081
严阳阳北京理工大学 光电学院, 北京 100081
陈淑芬北京理工大学 光电学院, 北京 100081chensf55@sina.com
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中文摘要:
2.5D集成技术(转接层技术)可以实现不同芯片间的异质集成,基于低阻硅通孔(TSV)的转接层利用了低阻硅的良好导电性,可以代替铜基硅通孔,具有工艺简单、成本低廉的优点.本文对低阻硅通孔进行了电磁学仿真,在1 GHz时,回波损耗S11为-24.7 dB,插入损耗S21为-0.52 dB基本满足传输线的要求.提出了等效电路模型,与电磁仿真结果对比,具有较好的一致性,可以实现在0.1~10 GHz带宽内的应用.最后对低阻硅通孔进行了TDT/TDR及眼图仿真,结果表明虽然低阻硅通孔的电阻对压降有较大影响,但是寄生电容的影响相对较小.
English Summary:
2.5D integration technology can enable the heterogeneous integration of several chips which fabricated by different technology or substrate. The low resistivity silicon through silicon via (LRS TSV) can take the place of copper TSV as its good conductivity, as well as the merits of simple process and low costs. The electromagnetic (EM) simulation of LRS TSV was performed. And the simulation results show that its return loss can be -24.7 dB and insertion loss can be -0.52 dB at 1 GHz which meet the requirement of transmission line. The electrical model of LRS TSV was proposed. Compared with electrical model, the EM results show good agreement, and it can be applied in 0.1~10 GHz tape width. In the end, the simulation results of time domain transmission (TDT), time domain reflection (TDR) and eye diagram show that the resistance of LRS TSV has more considerable impacts on voltage drop than the parasitic capacitance of LRS TSV.
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