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Improving the Reliability of Through Silicon Vias: Reducing Copper Protrusion by Artificial Defect Manipulation and Annealing 提高硅通孔的可靠性:通过人工缺陷处理和退火减少铜突起
IF 2.7 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-04-02 DOI: 10.1109/TSM.2024.3378160
Won-Jun Choi;Myong Jae Yoo;Joonho Bae;Ji-Hun Seo;Churl Seung Lee
Through silicon vias (TSVs) are a critical technology for manufacturing three-dimensional stacked structure of semiconductor packages by forming holes that penetrate silicon wafers and vertically interconnect multiple wafers. Typically, TSVs are created by drilling via holes in wafers and filling their interiors using copper electroplating processes. Subsequently, the wafers are exposed to high-temperature environments during the back-end-of-line (BEOL) process. However, improper copper electroplating conditions can form defects, such as voids and seams, within TSVs, while the high temperature of the BEOL process induces copper protrusion phenomena. These defects and copper protrusion degrade the reliability of TSV. In this brief, copper protrusion behavior, which is a direct cause of reliability degradation in TSVs, was mitigated by experimentally exploring the seam defects that can occur during the TSV filling process. Subsequent annealing processes were applied to remove the seam defects based on the copper-grain growth. The copper protrusion height was analyzed based on the size of the seam defects and annealing temperature. From the proposed process in this brief, the copper protrusion heights of TSVs without and with seam defects were confirmed to be 1.531 and $1.289~mu text{m}$ , respectively, representing an improvement of approximately 15.81%.
硅通孔(TSV)是制造三维堆叠结构半导体封装的一项关键技术,它可以形成穿透硅晶片的孔洞,实现多个晶片的垂直互连。通常情况下,TSV 是通过在硅片上钻通孔并使用电镀铜工艺填充其内部而形成的。随后,在后端线 (BEOL) 过程中,晶片会暴露在高温环境中。然而,不适当的电镀铜条件会在 TSV 内形成空洞和接缝等缺陷,而 BEOL 工艺的高温则会诱发铜突起现象。这些缺陷和铜突起会降低 TSV 的可靠性。在本简介中,通过实验探索了 TSV 填充过程中可能出现的接缝缺陷,从而减轻了直接导致 TSV 可靠性下降的铜突起行为。随后采用退火工艺,根据铜晶粒的生长情况消除接缝缺陷。根据接缝缺陷的大小和退火温度分析了铜突起的高度。根据本文提出的工艺,确认无接缝缺陷和有接缝缺陷的 TSV 的铜突起高度分别为 1.531 和 1.289~mu text{m}$,提高了约 15.81%。
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引用次数: 0
Chemical Mechanical Polishing of Single-Crystalline Diamond Epitaxial Layers for Electronics Applications 用于电子应用的单晶金刚石外延层的化学机械抛光
IF 2.7 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-29 DOI: 10.1109/TSM.2024.3383287
Aaron Hardy;Matthias Muehle;Cristian Herrera-Rodriguez;Michael Becker;Edward Drown;Nina Baule;Mark Tompkins;Timothy Grotjohn;John D. Albrecht
For single crystal diamond (SCD) to gain practical use in technical applications including solid state electronics, thin (< $1 ~mu text{m}$ ), doped epitaxial SCD layers with very low (<1> $4.5 mm^{2}$ area. A subsequent 8-hour oxidative CMP process utilizing potassium permanganate and a novel self-leveling holder design decreased the average surface roughness from 3.83 nm and 1.57 nm to 0.20 nm and 0.16 nm for the two samples, respectively. MRRs were determined by evaluating five circular wear monitor structures in each sample by atomic force microscopy before and after the CMP process. The average MRRs were found to be 38.6 nm/hr and 37.3 nm/hr for the two samples. The purpose of this study is to demonstrate a CMP process suitable for polishing thin SCD epilayers to meet the needs of solid-state electronics applications.
单晶金刚石(SCD)要想在包括固态电子学在内的技术应用中得到实际应用,就需要薄(1 ~mu text{m}$)、掺杂、面积极低(4.5 mm^{2}$)的外延 SCD 层。随后利用高锰酸钾和新型自流平支架设计进行了 8 小时的氧化 CMP 处理,使两个样品的平均表面粗糙度分别从 3.83 nm 和 1.57 nm 降至 0.20 nm 和 0.16 nm。通过原子力显微镜评估每个样品在 CMP 工艺前后的五个圆形磨损监测器结构,确定了 MRR。结果发现,两个样品的平均 MRR 分别为 38.6 nm/hr 和 37.3 nm/hr。本研究的目的是展示一种适用于抛光薄 SCD 表层的 CMP 工艺,以满足固态电子应用的需要。
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引用次数: 0
Identifying Good-Dice-in-Bad-Neighborhoods Using Artificial Neural Networks 利用人工神经网络识别 "坏邻居 "中的 "好伙伴
IF 2.3 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-28 DOI: 10.1109/TSM.2024.3406395
Chia-Heng Yen;Ting-Rui Wang;Ching-Min Liu;Cheng-Hao Yang;Chun-Teng Chen;Ying-Yen Chen;Jih-Nung Lee;Shu-Yi Kao;Kai-Chiang Wu;Mango Chia-Tso Chao
It is known that the determination of the good-dice-in-bad-neighborhoods (GDBNs) has been regarded as an effective technique to reduce the value of the defect parts per million (DPPM) by identifying and rejecting the suspicious dice even though they are good in testing. Instead of examining eight immediate neighbors in a small-sized $3times 3$ window or exploiting simple linear regression, a large-sized window can be used to recognize the broad-sighted neighborhoods and accurately infer the suspiciousness level for any given die. In this paper, the artificial neural networks (ANN)-based method can be proposed to solve the GDBN identification. Furthermore, two enhanced techniques can be further presented to improve the inference accuracy of the original ANN-based method by considering the variation of the time-dependent wafer patterns and the wafer-to-wafer relationship between two adjacent wafers. After applying the two enhanced techniques, the business profits can be improved in the new ANN-based method. Various experiments on two datasets clearly reveal the superiority of the proposed ANN-based method over the other existing methods. In addition to the reduction of the DPPM value, the new ANN-based method can achieve the 1.5X–2X better reduction in the cost of the return merchandise authorization (RMA). On the other hand, the experimental results show that the similar result can also be obtained in the other lower-yield products. By using the new ANN-based method, the relationships on bad dice cross wafers can be captured and the highly-accurate inference results can be simultaneously maintained.
众所周知,确定 "好骰子在坏邻居中"(GDBNs)一直被认为是通过识别和剔除可疑骰子(即使这些骰子在测试中是好的)来降低百万分之缺陷率(DPPM)值的有效技术。与在一个 3/3 乘 3$ 的小窗口中检查八个近邻或利用简单的线性回归不同,可以使用一个大窗口来识别广视角邻域,并准确推断任何给定骰子的可疑程度。本文提出了基于人工神经网络(ANN)的方法来解决 GDBN 识别问题。此外,本文还进一步提出了两种增强技术,通过考虑随时间变化的晶圆图案和相邻两个晶圆之间的晶圆与晶圆关系的变化,来提高基于人工神经网络的原始方法的推断精度。应用这两项增强技术后,基于 ANN 的新方法可以提高商业利润。在两个数据集上进行的各种实验清楚地揭示了所提出的基于 ANN 的方法优于其他现有方法。除了降低 DPPM 值,基于 ANN 的新方法还能使退货授权(RMA)成本降低 1.5 倍至 2 倍。另一方面,实验结果表明,其他低收益产品也能获得类似的结果。通过使用基于 ANN 的新方法,可以捕捉到坏骰子交叉晶圆的关系,并同时保持高精度的推理结果。
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引用次数: 0
Research Toward Wafer-Scale 3D Integration of InP Membrane Photonics With InP Electronics 实现 InP 膜光子学与 InP 电子学晶圆级 3D 集成的研究
IF 2.3 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-27 DOI: 10.1109/TSM.2024.3382511
S. Abdi;V. Nodjiadjim;R. Hersent;M. Riet;C. Mismer;T. de Vries;K. A. Williams;Y. Jiao
In this study, we focus on the development of key processes towards wafer-scale 3-dimentional/vertical (3D) integration of Indium-Phosphide (InP) photonic membranes on InP electronics via adhesive bonding. First, we identified the most critical steps and optimized them to achieve high thermal and mechanical compatibility of components for the co-integration process. Next, we developed a strategy for InP-to-InP wafer bonding with high topology tolerance, and introduced hard benzocyclobutene (BCB) anchors to preserve the alignment and BCB thickness uniformity after bonding. The resulting bond layer is homogeneous in terms of physical and mechanical properties. Finally, we developed a novel method to selectively remove the InP substrate from the photonics side via wet etching while protecting the electronics carrier wafer with hermetic multi-layer coatings. The investigation of these key steps is essential for scalable 3D integration of photonics and electronics at ultra short distances (< $15 ~mu text{m}$ ).
在本研究中,我们重点研究了通过粘合剂粘接实现晶圆级磷化铟(InP)光子膜与 InP 电子器件三维(3D)集成的关键工艺开发。首先,我们确定了最关键的步骤,并对其进行了优化,以实现共同集成过程中组件的高度热兼容性和机械兼容性。接着,我们开发了一种具有高拓扑容差的 InP 到 InP 晶圆键合策略,并引入了硬苯并环丁烯(BCB)锚,以保持键合后的对准和 BCB 厚度均匀性。所形成的键合层在物理和机械性能方面是均匀的。最后,我们开发了一种新方法,通过湿法蚀刻选择性地从光子侧移除 InP 衬底,同时用多层密封涂层保护电子载体晶片。这些关键步骤的研究对于在超短距离($15 ~mu text{m}$)内实现光子学和电子学的可扩展三维集成至关重要。
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引用次数: 0
Energy Consumption and Carbon Emission Reduction in HVAC System of a Dynamic Random Access Memory (DRAM) Semiconductor Fabrication Plant (fab) 动态随机存取存储器(DRAM)半导体制造厂(fab)暖通空调系统的能源消耗与碳减排
IF 2.7 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-22 DOI: 10.1109/TSM.2024.3379949
Pin-Yen Liao;Tee Lin;Omid Ali Zargar;Chia-Jen Hsu;Chia-Hung Chou;Yang-Cheng Shih;Shih-Cheng Hu;Graham Leggett
This study focuses on energy saving for a Taiwan high-tech DRAM factory as the primary research subject. Collecting operational parameters related to various facility systems and process equipment is initially performed by using the developed energy conversion factors (ECF) calculator. Moreover, innovative fab energy simulation (FES) software has been designed by Taipei Tech. This software is designed for high-tech fab energy consumption analysis. The annual energy consumption data for fabs can be calculated. This data is then converted into carbon dioxide emissions using the power carbon emission coefficient provided by the Bureau of Energy, Ministry of Economic Affairs Taiwan. In this study, five different energy-saving strategies were proposed. The energy consumption and carbon emissions distribution were evaluated to assess the benefits of those different techniques. The findings show that among the existing operational facilities, the use of an exhaust air conditioning unit with reduced enthalpy value setting, with lowered supply air temperature, demonstrates the highest energy-saving. This technique has the potential to annually reduce carbon emissions by approximately 623,158 kg CO2 and operational costs by NT ${$}$ 6,005,764 (189,602 U.S. ${$}$ ). This can reduce the overall manufacturing cost and is also beneficial for the environment.
本研究以台湾一家高科技 DRAM 工厂的节能为主要研究对象。首先使用已开发的能源转换系数(ECF)计算器收集与各种设施系统和工艺设备相关的运行参数。此外,台北科技大学还设计了创新的工厂能源模拟(FES)软件。该软件专为高科技工厂能耗分析而设计。它可以计算出工厂的年度能耗数据。然后,利用台湾经济部能源局提供的电力碳排放系数,将这些数据转换为二氧化碳排放量。本研究提出了五种不同的节能策略。对能源消耗和碳排放分布进行了评估,以评估这些不同技术的效益。研究结果表明,在现有的运行设施中,使用降低焓值设置的排风空调机,同时降低送风温度,节能效果最好。这项技术每年可减少约 623,158 千克二氧化碳排放,减少运营成本 6,005,764 新台币(189,602 美元)。这可以降低总体制造成本,同时也有利于环境。
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引用次数: 0
Optimization of Void Defects at TiN/Si:HfO2 Interface for 3-D Ferroelectric Memory 优化三维铁电存储器的 TiN/Si:HfO2 接口空隙缺陷
IF 2.3 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-21 DOI: 10.1109/TSM.2024.3403230
Dongxue Zhao;Zhiliang Xia;Yi Yang;Meiying Liu;Yuancheng Yang;Zongliang Huo
In the 3D ferroelectric memory fabrication process, the outer Titanium nitride metal electrode and silicon doped hafnium-based ferroelectric layer will produce void defects at the interfaces, causing increased leakage and compromising device performance. These void defects are caused by the volume contraction during the phase transition process, which leads to tension at the outer interface of the 3D ferroelectric capacitor structure. Due to the unavoidable structural stress, it is necessary to optimize the interface bonding energy. First principles simulation revealed insufficient binding energy between titanium nitride and silicon doped hafnium oxide ferroelectric materials, while introducing an amorphous alumina interface layer can effectively improve the binding ability. Experimental verification has confirmed that using an amorphous alumina interface layer as an adhesive layer can successfully solve the interface void defects, thereby improving the ferroelectric properties in three-dimensional structures.
在三维铁电存储器制造过程中,外层氮化钛金属电极和掺硅铪基铁电层会在界面处产生空隙缺陷,导致漏电增加,影响器件性能。这些空隙缺陷是由相变过程中的体积收缩引起的,从而导致三维铁电电容器结构的外部界面产生张力。由于结构应力不可避免,因此有必要优化界面结合能。第一原理模拟显示,氮化钛和掺硅氧化铪铁电材料之间的结合能不足,而引入非晶氧化铝界面层可有效提高结合能力。实验验证证实,使用非晶氧化铝界面层作为粘合层可成功解决界面空隙缺陷,从而改善三维结构的铁电特性。
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引用次数: 0
Plasma Pretreatment System for the Reduction of By-Product Particles in Semiconductor Manufacturing 用于减少半导体制造过程中副产品颗粒的等离子体预处理系统
IF 2.3 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-20 DOI: 10.1109/TSM.2024.3402214
Se Yun Jo;Minsuk Choi;Sang Jeen Hong
Titanium tetrachloride (TiCl4) is a well-known source of titanium (Ti) for the formation of titanium nitride (TiN) barrier material in the semiconductor interconnection process; however, the reaction of by-products with airborne molecules can cause unexpected pump trips and equipment breakdown from the by-product powder build-up. Plasma scrubbers are used to decompose by-products, but hydrogen chloride (HCl) and nitrogen oxides are produced during and after the process. The process mechanisms change when the temperature and applied power of the heat source change. In this paper, we study the influence of the reactor temperature and applied power to the heat source on the decomposition capacity of TiCl4 in a plasma pretreatment system (PPS). We examine the effect of the temperature and heat source power to understand the reaction mechanisms for the composition and decomposition of gaseous species with chemical reactions through simultaneous methods. We analyzed the system with computational fluid dynamics (CFD) and chemical kinetic simulation to investigate the changes of the system mechanism. Subsequently, we achieved results for the correlation between the temperature of the reactor, power applied to the heat source, composition and decomposition of species, and chemical reaction mechanisms.
四氯化钛 (TiCl4) 是众所周知的钛 (Ti) 来源,用于在半导体互连工艺中形成氮化钛 (TiN) 阻挡层材料;然而,副产品与空气中的分子发生反应,可能会因副产品粉末堆积而导致泵意外跳闸和设备故障。等离子洗涤器用于分解副产品,但在此过程中和之后会产生氯化氢 (HCl) 和氮氧化物。当热源的温度和应用功率发生变化时,工艺机理也会发生变化。本文研究了等离子体预处理系统(PPS)中反应器温度和热源功率对 TiCl4 分解能力的影响。我们研究了温度和热源功率的影响,以便通过同步方法了解气态物质的组成和分解与化学反应的反应机理。我们利用计算流体动力学(CFD)和化学动力学模拟对系统进行了分析,以研究系统机理的变化。随后,我们得出了反应器温度、热源功率、物种组成和分解以及化学反应机制之间的相关性结果。
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引用次数: 0
Call for Nominations: 2024 EDS Early Career Award 征集提名:2024 年 EDS 早期职业奖
IF 2.7 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-07 DOI: 10.1109/TSM.2024.3394310
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引用次数: 0
IEEE Transactions on Semiconductor Manufacturing Publication Information 电气和电子工程师学会半导体制造期刊》出版信息
IF 2.7 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-07 DOI: 10.1109/TSM.2024.3378552
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引用次数: 0
IEEE Transactions on Semiconductor Manufacturing Information for Authors IEEE Transactions on Semiconductor Manufacturing 为作者提供的信息
IF 2.7 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-07 DOI: 10.1109/TSM.2024.3378554
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引用次数: 0
期刊
IEEE Transactions on Semiconductor Manufacturing
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