AI demand pushes global ABF substrate market into shortage, with pressure seen through 2028

The AI compute arms race has thrust ABF substrates—a silent bottleneck—into the spotlight. Technically, HBM3E and CoWoS packaging demand high-layer-count, fine-line ABF, forcing TSMC and Intel to recalibrate advanced packaging ramp schedules; upstream suppliers like Ibiden face 18–24-month lead times, creating hard capacity constraints. Geopolitical friction intensifies compliance risk: while the U.S. and EU push for onshoring, over 70% of ABF capacity resides in Taiwan, China and Japan, exposing supply chains to scrutiny-driven cost spikes. Strategically, Samsung is vertically integrating ABF production to reduce reliance on Japanese vendors, while NVIDIA and AMD secure long-term contracts—marginalizing smaller players. Over the next 24 months, expect three tailwinds: structural cost inflation in advanced packaging, accelerated Chiplet adoption, and non-U.S. substrate makers capturing mid-to-high-end market share.