After the 2-Nanometer Era: Why Advanced Packaging Matters for Chip Performance

2026/02/05

TechNews Report
January 30, 2026
Author: Su Ziyun

With the gradual mass production of 2-nanometer process technology, semiconductor technology is entering a new stage. It's becoming increasingly clear that chip performance no longer solely depends on the continuous miniaturization of transistors; the placement and interconnection of other components are becoming more crucial. This has made "advanced packaging," responsible for integration and configuration, a key technology attracting significant market attention.

What is Advanced Packaging?

Advanced packaging doesn't refer to a single specific technology, but rather a series of packaging methods used to enhance chip integration, interconnectivity, and system performance. In the industry, we often hear terms like CoWoS and SoIC, which can be thought of as a shift from "building a bungalow" to "building a skyscraper." Traditional packaging simply attaches the chip to a carrier board, but advanced packaging, through 2.5D or even 3D stacking, shortens the distance between chips and between chips and memory.

In other words, advanced packaging doesn't directly make chips "calculate faster," but rather allows computing power to be utilized more efficiently. Just like equipping a character with the right gear, packaging transforms previously dispersed performance potential into usable output.

Why does "how it's connected" affect performance?

The key lies in the distribution of the circuitry. In advanced chips, the power consumed by data moving internally sometimes exceeds the power consumed by the computation itself. If the circuitry takes long detours like in traditional designs, it not only causes latency but also wastes a significant amount of energy. Advanced packaging is like building a "skybridge" inside the chip. Imagine it like a shopping district; data is like shoppers who can freely move between malls without worrying about traffic lights on the ground, simply by using the skybridge on the second floor. This saves time waiting for traffic lights.

Furthermore, the packaging structure is closely related to heat dissipation performance. As chips are stacked more densely, heat sources become more concentrated. This is like a building overcrowded with people; if the air conditioning can't keep up, everyone can't work properly. Even if a chip theoretically has high performance, if heat cannot be effectively dissipated, the actual usable performance will still be limited. This makes packaging design a key factor in determining the upper limit of performance.

AI and Mobile Devices: The Trade-off Between Performance Behemoths and Pocket Art

Interestingly, the packaging requirements for different application scenarios are gradually diverging. AI and data center chips pursue "ultimate output," and to cram in massive amounts of memory (such as HBM), packaging designs will spare no expense to pursue the highest bandwidth and transmission efficiency.

In contrast, mobile device chips, such as those for smartphones, are more like a "pocket-sized art of spatial design." Mobile phone packaging (such as InFO technology) not only needs to consider performance but also pursue extreme thinness to free up more space for the battery, while also ensuring battery life. Even though both are classified as advanced packaging, AI chips pursue "brute force performance," while mobile phone chips achieve a delicate balance between high integration and power consumption.

Glass Substrates and Panel Packaging

The evolution of advanced packaging has never stopped. To make chips flatter and more heat-resistant, the industry has even begun to develop "glass substrates" to replace traditional plastic materials. Glass not only allows for the creation of finer circuits, enabling more precise signal transmission, but its temperature resistance also significantly reduces material expansion and warping. Most notably, glass substrates can encapsulate more chips simultaneously, effectively reducing production costs.

As for another highly anticipated technology, Panel-on-Package (FOPLP), it represents an efficiency revolution in "shape." Traditionally, packaging is mostly done on circular wafers, inevitably resulting in wasted space at the edges. FOPLP, however, uses square packaging, much like slicing tofu, making more efficient use of every inch of space. This logic of "maximum utilization" increases production volume while further reducing costs.

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