Advanced IC Packaging: Multi-Chip, Chiplet and 3D Stacking Trends - News and Statistics - IndexBox

Chiplet is not an evolution of packaging—it is a reallocation of power in the semiconductor value chain. When AI accelerator performance hinges on stacking interconnect density rather than single-die node, the assembler becomes the system architect. TSMC's SoIC, Intel's Foveros, and Samsung's X-Cube are three plays for post-Moore integration dominance. The ripple effect is already upstream: hybrid bonding equipment orders stretch into 2026, TSV processes drive exponential CMP material consumption, and EDA tools must shift from single-die simulation to multi-die thermal-electrical-mechanical co-modeling. The real risk sits at the intersection of standards and geopolitics. If UCIe 2.0 fails to deliver cross-vendor interoperability by 2026, the chiplet ecosystem fragments into proprietary plugins—repeating the x86-versus-ARM bifurcation. Tightened export controls on advanced packaging equipment would slow capacity expansion in Taiwan, China and South Korea, paradoxically widening the window for mainland OSAT players in 2.5D. Within 18 months: HBM4 hybrid bonding pushes yield past 95%; chiplets penetrate automotive, with the segment clearing $4B by 2026; and global advanced-packaging capex growth outpaces front-end wafer fabs for the first time. Packaging is becoming the new chokepoint.