Stephen Rothrock, Founder & CEO, ATREG, Inc.

Advanced Packaging at a Facility Crossroad

The rise of advanced packaging from back-end afterthought to strategic imperative is forcing difficult facility decisions across the global semiconductor industry.

The infrastructure gap is stark. OSATs have traditionally operated in Class 10,000 cleanrooms. Hybrid bonding and other advanced techniques now demand Class 1,000 or better, approaching front-end fab specifications. This isn't a routine upgrade.

Many existing facilities simply cannot be retrofitted to meet these requirements, forcing companies unfamiliar with front-end capital intensity to choose between greenfield construction, major renovation, or strategic partnerships with foundries that already possess the necessary infrastructure.

Panel-level packaging adds another layer of complexity. AI accelerators require rectangular panels rather than circular wafers, but panel facilities demand entirely different designs – blending semiconductor automation with practices borrowed from display manufacturing. Few companies have experience building or operating such hybrid environments.

Meanwhile, supply chain resilience requirements are pushing customers to demand multiple qualified manufacturing sites. For OSATs already facing capital-intensive upgrades, replicating advanced capabilities across geographies compounds the challenge.

The companies that navigate this transition successfully will be those that think strategically about their facility footprint – whether through acquisition, disposition, partnership, or purpose-built expansion. The wrong facility decision today could determine competitive positioning for the next decade.