direct Transfer Bonding (dTB) is considered a competitive candidate to achieve a die-to-Wafer direct/Hybrid Bonding (dB/HB). In this study, we proposed anddemonstrated the feasibility of a mechanism for image recogni...
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ISBN:
(纸本)9798350390377;9798350390360
direct Transfer Bonding (dTB) is considered a competitive candidate to achieve a die-to-Wafer direct/Hybrid Bonding (dB/HB). In this study, we proposed anddemonstrated the feasibility of a mechanism for image recognition and alignment over a chip carrier tape to achieve high joint accuracy, which has not been achieved with conventional dTB approach. It was confirmed that <100 nm level alignment can be achieved with this method. The dTB with this method will realize a low-cost and versatile die-to-Wafer dB/HB.
Generative art is algorithmically generated art that is synthesized by computer software algorithms or mathematical autonomous processes. The learner wears HoloLens2 and learns by transforming and observing three-dime...
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ISBN:
(纸本)9798350376975;9798350376968
Generative art is algorithmically generated art that is synthesized by computer software algorithms or mathematical autonomous processes. The learner wears HoloLens2 and learns by transforming and observing three-dimensional (3d) generative art projected on a virtual space. In this study, we developed an experiential learning system for learning mathematics and programming by experiencing generative art in a virtual space. We conducted a comparative study to see if this system would make a difference in learning efficiency compared to learning with a conventional two-dimensional (2d) learning medium such as textbooks. The results showed that there was no significant difference in the learning efficiency between conventional learning and learning using the generative art displayed in the virtual space in terms of learning the volume and surface area of the torus body, however, there was a difference in the way the subjects drew the torus body. We deduced that HoloLens2 will be an effective educational supplementary tool to 3d visualize 3d figures while giving a programming insight through reflections in code obtained from changing the size of the 3d figure.
3d heterogeneous integration (HI) and advanced packaging (AP) technologies require small volume, high-density interconnects for stacking discrete chips for which the reliability of interconnects becomes crucial. Inter...
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ISBN:
(纸本)9798350390377;9798350390360
3d heterogeneous integration (HI) and advanced packaging (AP) technologies require small volume, high-density interconnects for stacking discrete chips for which the reliability of interconnects becomes crucial. Intermetallic compounds (IMCs) based mu bumps have been shown to outperform solder-based mu bumps concerning their resistance to electromigration (EM) related failures, which is a key index to assess the interconnect reliability. Cu-Sn solid-liquid interdiffusion (SLId) bonding is an attractive low-cost wafer-level bonding technology for rapid manufacturing of full Cu3Sn IMC mu bumps. However, SLId requires melting of Sn during the bonding process which poses risks anddesign challenges in manufacturing. due to Sn squeeze-out during the bonding process, Sn melt could react with redistribution layers (RdLs) or metallization layers and form IMCs at undesired locations resulting in early failures thereby compromising the reliability. The Sn-squeeze out issue during bonding is addressed in this work by designing test structures with equal and unequal lateral dimensions of mu bumps in the top and bottom wafers. The effects of Sn-squeeze out on the EM resistance and reliability are compared in both designs. Significant improvement in the Sn-squeeze out and corresponding EM resistance was observed in the test structures manufactured with unequal lateral dimensions of mu bumps in the top and bottom wafers. FE element simulations were carried out to gain insights and assess the impact of Sn squeeze-out on the reliability and functionality of the Cu3Sn mu bumps.
Fueled by advanced packaging technologies, the chiplet-baseddesign approach is moving the design methodology in the semiconductor industry from monolithic system-on-Chip (SoC) to system-in-Package (SiP). In SiP, a co...
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We introduce LFCAVE, an interactive 3ddisplay system comprised of display and interaction modules. In the display aspect, we have developed a multi-screen light field model that incorporates multiple consumer-grade l...
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ISBN:
(纸本)9798350379822;9798350379815
We introduce LFCAVE, an interactive 3ddisplay system comprised of display and interaction modules. In the display aspect, we have developed a multi-screen light field model that incorporates multiple consumer-grade light fielddisplays for seamless multi-screen presentations. Compared to traditional single-screen setups, our system offers an expanded viewing angle and accommodates a larger number of observers. In the interaction aspect, we have crafted multiple gesture operation interfaces, implemented on consumer-grade gesture recognition devices to amplify the system's interactivity and user engagement. Our demonstrations through both static anddynamic scenes underscore the efficacy of our system. This work illuminates the potential of multi-screen light fielddisplay technology in enhancing visual experiences and interactivity, paving a new path for the evolution of interactive 3ddisplay technologies.
The development of deep neuro networks brings a sharp rise in demands for expeditious convolutional computing operations, but the 39;memory wall39; originated from the intense data transfer, has greatly hindered t...
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Over the past few decades, uncooled infrared sensors have evolved by detecting changes in electrical properties resulting from temperature variations when absorbing infrared radiation. The integration of 3d MEMS techn...
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In this study, we fabricated three-dimensional (3d) dEA made of an organogel anddrove it out-of-plane direction using an experimental system that applied pre-stretch with water pressure. Organogels have a lower Young...
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ISBN:
(纸本)9798350398687
In this study, we fabricated three-dimensional (3d) dEA made of an organogel anddrove it out-of-plane direction using an experimental system that applied pre-stretch with water pressure. Organogels have a lower Young's modulus and higher relative permittivity than elastomer materials used in conventional dEA such as PdMS. Therefore, fabrication of dEAs using organogel is expected to increase the displacement of dEAs. Thus, we fabricated a dielectric gel that is a kind of organogel with high dielectric constant and excellent elasticity. We evaluated static characteristics and frequency response of water-pre-stretcheddEA made of dielectric gel. We also fabricated three-dimensional dielectric gel for a 3d shapeddEA. From a driving experiment, it was confirmed that this 3ddEA can generate 10 times larger displacement than that of PdMS.
3d heterogeneous integration enables the integration of multiple heterogeneous chiplets into the same package with the effective reduction of package size and interconnection latency. According to the market requireme...
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ISBN:
(纸本)9798350322255
3d heterogeneous integration enables the integration of multiple heterogeneous chiplets into the same package with the effective reduction of package size and interconnection latency. According to the market requirement, chiplets with robust re-usability and effective cost reduction can be selected from a library to form different package products for enlarging total profit. Since die-to-wafer (d2W) bonding enables the chiplets with different sizes to be bonded in a package, it is a more flexible option for 3d heterogeneous integration compared with the conventional wafer-to-wafer (W2W) bonding. However, this promising technique creates new issues, including 1) flexible chiplet bonding enabling more than one chiplet to be bonded with a base chiplet to construct multiple products and 2) degraded bonding leading to the degradation of performance. In this work, a distributed integer-linear-programming-based (ILP-based) method is proposed to efficiently maximize the profits of multiple package products considering the issues of cost-addition 3d heterogeneous integration with d2W bonding. Compared with the baseline, the distributed ILP-based method can achieve the best profits while achieving a 5.96X speedup. To the best of our knowledge, this is the first work to solve the multi-product optimization problem for 3d heterogeneous integration with d2W bonding.
3d stack integration with certain devices has led to the development of several techniques. One such technique is Wafer-on-Wafer technology, while another is die stacking. Wafer-on-Wafer technology enables Cu-Cu hybri...
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ISBN:
(纸本)9798350390377;9798350390360
3d stack integration with certain devices has led to the development of several techniques. One such technique is Wafer-on-Wafer technology, while another is die stacking. Wafer-on-Wafer technology enables Cu-Cu hybrid bonding for multiple wafers, while die stacking focuses on chip-let stacking within the realm of die stacking technology. The demand for multiple device integration in a system is driving the adoption of these techniques. Industry is inclined towards low-temperature integration schemes to avoid imposing high thermal budgets on the devices. This study investigated a low temperature die-bonding to a target wafer using IMC (Inter-Metallic Compound) assisted configuration on its boundary with solder and IMCs.
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