3D-IC: Operator Learning Framework For Ultra-Fast 3D Chip Thermal Prediction Under Multiple Chip Design Configurations


A new technical paper titled "DeepOHeat: Operator Learning-based Ultra-fast Thermal Simulation in 3D-IC Design" was published (preprint) by researchers at UCSB and Cadence. Abstract "Thermal issue is a major concern in 3D integrated circuit (IC) design. Thermal optimization of 3D IC often requires massive expensive PDE simulations. Neural network-based thermal prediction models can perform ... » read more

True 3D Is Much Tougher Than 2.5D


Creating real 3D designs is proving to be much more complex and difficult than 2.5D, requiring significant innovation in both technology and tools. While there has been much discussion about 3D designs, there are multiple interpretations about what 3D entails. This is more than just semantics, however, because each packaging option requires different design approaches and technologies. And a... » read more

The Race Toward Mixed-Foundry Chiplets


Creating chiplets with as much flexibility as possible has captured the imagination of the semiconductor ecosystem, but how heterogeneous integration of chiplets from different foundries will play out remains unclear. Many companies in the semiconductor ecosystem are still figuring out how they will fit into this heterogeneous chiplet world and what issues they will need to solve. While near... » read more

Room-Temperature Metal Bonding Technology That Facilitates The Fabrication of 3D-ICs & 3D Integration With Heterogeneous Devices


A technical paper titled "Room-Temperature Direct Cu Semi-Additive Plating (SAP) Bonding for Chip-on-Wafer 3D Heterogenous Integration With μLED" was published by researchers at Tohoku University in Japan. Abstract: "This letter describes a direct Cu bonding technology to there-dimensionally integrate heterogeneous dielets based on a chip-on-wafer configuration. 100- μm -cubed blue μ LED... » read more

Improving Performance And Power With HBM3


HBM3 swings open the door to significantly faster data movement between memory and processors, reducing the power it takes to send and receive signals and boosting the performance of systems where high data throughput is required. But using this memory is expensive and complicated, and that likely will continue to be the case in the short term. High Bandwidth Memory 3 (HBM3) is the most rece... » read more

What Does 2023 Have In Store For Chip Design?


Predictions seem to be easier to make during times of stability, but they are no more correct than at any other period. During more turbulent times, fewer people are courageous enough to allow their opinions to be heard. And yet it is often those views that are more well thought through, and even if they turn out not to be true, they often contain some very enlightening ideas. 2022 saw some ... » read more

Adapting To Broad Shifts Essential In 2022


Change creates opportunity, but not every company is able to respond quickly enough to take advantage of those opportunities. Others may respond too quickly, before they properly understand the implications. At the start of a typical year, optimism is in plentiful supply. Any positive trend is seen as continuing, and any negative is seen as turning around. Normally the later in the year that... » read more

3D-IC Reliability Degrades With Increasing Temperature


The reliability of 3D-IC designs is dependent upon the ability of engineering teams to control heat, which can significantly degrade performance and accelerate circuit aging. While heat has been problematic in semiconductor design since at least 28nm, it is much more challenging to deal with inside a 3D package, where electromigration can spread to multiple chips on multiple levels. “Be... » read more

Ready, Set, Go: Outrunning Moore’s Law With 3D-IC


By Anthony Mastroianni and Gordon Allan, Siemens EDA 3D ICs are an exciting and promising extension of heterogeneous advanced package technology into the third dimension. Although far from mainstream, 3D IC’s time is coming, as chiplet standardization efforts and supporting tool developments begin to make 3D IC practicable and profitable to more players – big and small – and products w... » read more

The Computational Electromagnetics Simulation Challenge Of 3D-IC


By Kelly Damalou and Matt Commens Innovation in semiconductor design today is energized primarily by AI/ML, data centers, autonomous and electric vehicles, 5G/6G, and IoT. Recently developed 2.5 and 3D-IC silicon-based packaging technologies have advanced the state of the art beyond SoC technologies which first united digital, analog, and memory functions on a single chip in the '90s. These ... » read more

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