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Improving Redistribution Layers for Fan-out Packages And SiPs


Redistribution layers (RDLs) are used throughout advanced packaging schemes today including fan-out packages, fan-out chip on substrate approaches, fan-out package-on-package, silicon photonics, and 2.5D/3D integrated approaches. The industry is embracing a variety of fan-out packages especially because they deliver design flexibility, very small footprint, and cost-effective electrical connect... » read more

Study Of Bondable Laser Release Material Using 355nm Energy To Facilitate RDL-First And Die-First Fan-Out Wafer-Level Packaging (FOWLP)


A thorough evaluation on selecting a bondable laser release material for redistribution layer (RDL)-first and die-first fan-out wafer-level packaging (FOWLP) is presented in this article. Four laser release materials were identified based on their absorption coefficient at 355 nm. In addition, all four of these materials possess thermal stability above 350 °C and pull-off adhesion on a Ti/Cu l... » read more

Chip-Last HDFO (High-Density Fan-Out) Interposer-PoP


Interposer Package-on-Package (PoP) technology was developed and has been in very high-volume production over the last several years for high-end mobile application processors (APs). This is due to its advantages of good package design flexibility, controllable package warpage at room temperature (25°C) and high temperature (260°C), reduced assembly manufacturing cycle time and chip-last asse... » read more

Advanced Packaging’s Next Wave


Packaging houses are readying the next wave of advanced packages, enabling new system-level chip designs for a range of applications. These advanced packages involve a range of technologies, such as 2.5D/3D, chiplets, fan-out and system-in-package (SiP). Each of these, in turn, offers an array of options for assembling and integrating complex dies in an advanced package, providing chip custo... » read more

Making Chip Packaging More Reliable


Packaging houses are readying the next wave of IC packages, but these products must prove to be reliable before they are incorporated into systems. These packages involve several advanced technologies, such as 2.5D/3D, chiplets and fan-out, but vendors also are working on new versions of more mature package types, like wirebond and leadframe technologies. As with previous products, packaging... » read more

What’s The Best Advanced Packaging Option?


As traditional chip designs become more unwieldy and expensive at each node, many IC vendors are exploring or pursuing alternative approaches using advanced packaging. The problem is there are too many advanced packaging options on the table already, and the list continues to grow. Moreover, each option has several tradeoffs and challenges, and all of them are still relatively expensive. ... » read more

Lithography Challenges For Fan-out


Higher density fan-out packages are moving toward more complex structures with finer routing layers, all of which requires more capable lithography equipment and other tools. The latest high-density fan-out packages are migrating toward the 1µm line/space barrier and beyond, which is considered a milestone in the industry. At these critical dimensions (CDs), fan-outs will provide better per... » read more

More 2.5D/3D, Fan-Out Packages Ahead


A new wave of 2.5D/3D, fan-out and other advanced IC packages is expected to flood the market over the next year. The new packages are targeted to address many of the same and challenging applications in the market, such as multi-die integration, memory bandwidth issues and even chip scaling. But the new, advanced IC packages face some technical challenges. And cost remains an issue as advan... » read more

Defect Challenges Growing In Advanced Packaging


The current defect inspection systems for packaging are running out of steam for the latest advanced packages, prompting the need for new tools in the market. In response, several vendors are rolling out new defect inspection systems for use in various advanced packages, such as 2.5D/3D technologies and fan-out. The new defect inspection systems are more capable than the previous tools, but ... » read more

Return Of The Organic Interposer


Organic interposers are resurfacing as an option in advanced packaging, several years after they were first proposed as a means of reducing costs in 2.5D multi-die configurations. There are several reasons why there is a renewed interest in this technology: More companies are pushing up against the limits of Moore's Law, where the cost of continuing to shrinking features is exorbitant. ... » read more

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