Demand Outstrips Supply on Legacy Nodes

As chipmakers pour capital into advanced nodes and AI-related capacity such as HBM and leading-edge logic, few new 8-inch lines are being built. That has left existing 200mm capacity at foundries including UMC, TSMC and DB HiTek carrying a disproportionate share of demand from customers making display driver ICs, power management ICs and other mature-node products.

The structural squeeze is straightforward: automotive, industrial and consumer device makers continue to order mature-node chips, while the industry's expansion budget is directed almost entirely toward 12-inch (300mm) and advanced-process facilities. Older fabs cannot be replicated quickly, making remaining 8-inch capacity effectively a fixed resource.

Scope of the Shortage Varies

The claim is broadly accurate but benefits from nuance. Not every 8-inch line is equally "precious" — utilization and pricing differ by foundry, region and product mix, and some mature-node segments have seen softer demand periods. The picture is one of structurally tight capacity rather than a uniform, across-the-board shortage.

Verdict: Mostly True