The explosive growth of AI has created an intense bottleneck in advanced semiconductor packaging, a critical final step in chip manufacturing. This challenge has brought South Korea's strategic mission to catch up with industry leaders Taiwan and China into sharp focus.
The core of the issue lies with Taiwan's TSMC, whose CoWoS (Chip-on-Wafer-on-Substrate) technology is the gold standard for packaging high-performance AI chips. While TSMC is aggressively expanding its capacity—projected to reach 115,000 to 140,000 wafers per month by the end of 2026—demand continues to outpace supply. This sustained shortage creates a ripple effect across the supply chain.
One major consequence is rising costs. There are growing concerns that prices for Ajinomoto Build-up Film (ABF), an essential insulating material for high-density substrates, could increase. This would directly translate to higher prices for finished ABF substrates, potentially adding a 3-6% cost burden to the final package. For semiconductor companies, this means squeezed profit margins and a desperate search for alternatives.
In this environment, South Korea is launching a comprehensive counter-strategy. First, it is exploring alternative technologies to reduce its dependence on TSMC. A key development is SK hynix's research and development collaboration with Intel on its EMIB (Embedded Multi-die Interconnect Bridge) 2.5D packaging. A successful EMIB implementation could create a viable, non-TSMC supply chain for high-performance chips. Second, Korea is bolstering its domestic infrastructure. Leading OSAT (Outsourced Semiconductor Assembly and Test) companies like Amkor Technology are expanding their facilities, such as the new test building in Songdo, to increase high-value-added processing capacity within the country. Third, these private sector efforts are backed by strong government support, including the 'K-Chips Act' tax incentives and plans to establish a national advanced packaging hub in Gwangju.
However, significant hurdles remain. Technical challenges like 'warpage'—the bending of large packages during manufacturing—can hurt production yields and need to be overcome. Ultimately, while Korea is making determined strides, closing the technology and capacity gap with Taiwan is a marathon, not a sprint. The nation's success will depend on its ability to execute this multi-pronged strategy effectively against a backdrop of persistent material shortages and fierce global competition.
- Advanced Packaging: A method of integrating multiple semiconductor chips into a single device to enhance performance and power efficiency, crucial for AI accelerators.
- OSAT (Outsourced Semiconductor Assembly and Test): Companies that provide third-party semiconductor assembly, packaging, and testing services.
- ABF Substrate: A high-performance integrated circuit substrate made with Ajinomoto Build-up Film, used for high-end CPUs, GPUs, and AI chips.