GoKawiilABF substrate supply chain faces bottleneck as AI chip demand surges
Ajinomoto build-up film, the insulating material used in nearly every high-end CPU, GPU, and AI accelerator package, is supplied almost entirely by one Japanese company that controls over 95% of the global market. As AI data centers scale into the gigawatt era with millions of accelerators needed, this narrow supply chain of substrate makers and a single film source is becoming a critical constraint on chip production.