Glass substrates break through as AI packaging hits an organic wall
Intel and Samsung start the shift from organic resin to glass cores; SK's Absolics ships first commercial-grade panels; Korea contests Intel on standards
Summary
AI packaging has hit an organic-substrate wall: resin cores warp and crack under ever-larger multi-die HBM-heavy accelerators, and the industry is pivoting to glass cores. In January 2026 Intel showed EMIB-plus-glass samples (crack-free) at NEPCON Japan; Samsung (via SEMCO) ran a Sejong pilot line and is sampling US cloud providers; and SK Hynix subsidiary Absolics became the first in the world to ship commercial-grade glass panels from Covington, Georgia, targeting AMD and Amazon, expecting ~$100M first-year revenue. On 15 April Korea moved to contest Intel on glass-substrate standards, a fight to set the rules of the next packaging generation. Glass cuts signal-transmission power ~50% and improves signal integrity ~40% versus organic.
By the numbers
- ~50%, reduction in signal-transmission power vs organic substrates.
- ~40%, improvement in signal integrity (Absolics test data).
- ~$100M, Absolics' expected first-year glass-substrate revenue.
- 4,000 → 8,000, Absolics panels/month, planned 2026 capacity doubling.
- 2027, Samsung's targeted glass mass-production start.
Why it matters
Advanced packaging, not transistor scaling, increasingly gates AI accelerator performance. Glass substrates are the material unlock for bigger, denser GPU+HBM packages, and the supply chain is shifting east: SK's Absolics has the merchant lead, Samsung the volume runway, Intel the integrated play. Whoever sets the glass standard shapes who supplies the next decade's AI silicon.
What to watch
- The Intel-vs-Korea standards contest and which spec wins merchant adoption.
- Absolics yield and ramp from 4,000 to 8,000 panels/month.
- Whether glass appears in shipping flagship AI accelerators (AMD, Nvidia) and when.