The glass core substrates for semiconductor packaging market is being pulled forward by the physical scaling of AI packages. As package dimensions and interconnect counts rise, conventional organic cores face increasing pressure from warpage and routing density.

Glass offers a combination of rigidity, surface quality and dimensional stability that can support larger package footprints and denser interconnects. Intel’s 2026 collaboration with Lens Technology, Corning’s carrier technology and Samsung Electro-Mechanics’ AI/server substrate concepts show that the field is moving from laboratory research toward industrial qualification.

Intel

Intel is a key driver of glass-core substrate development because advanced packaging is becoming a bottleneck as AI packages grow in area, interconnect count and power density. Its packaging roadmap is designed around larger compute packages and tighter integration of multiple dies.

In July 2026, Intel and Lens Technology announced a strategic collaboration to develop glass-substrate packaging for AI, data-center and specialized computing workloads. Intel said the work targets higher performance, greater interconnect density and improved power efficiency.

The significance for the substrate market is that glass is moving from materials research toward ecosystem qualification. Intel contributes packaging process know-how while Lens brings precision glass processing, creating a route toward manufacturing-scale development.

Corning

Corning approaches semiconductor packaging from the glass-material side, developing precision carriers and substrate materials designed to control flatness, CTE and warpage for advanced packaging.

Its advanced-packaging glass carriers are available in panel formats such as 515 × 510 mm and 600 × 600 mm, and the company reports warp reduction of up to 40% in relevant carrier applications. Corning also describes through-glass-via capability for high-density interconnect structures.

For chiplet and panel-level packaging, these properties are important because warpage can directly affect lithography, bonding, alignment and electrical yield. A glass-core supplier therefore competes on dimensional stability as much as on the basic material composition.

AGC

AGC is developing glass materials and substrates for advanced semiconductor packaging, targeting both wafer-scale and panel-scale process flows. Its portfolio includes glass carriers and through-glass-via technologies.

In August 2026, AGC highlighted glass substrates for advanced packaging at SEMICON India. Its technology is designed to support both 300 mm wafer formats and approximately 500 mm square panels, with high flatness and surface smoothness for wafer- and panel-level processing.

This matters because larger panel dimensions can improve packaging productivity, but only if dimensional stability remains adequate through thermal and mechanical cycles. AGC’s glass-material heritage gives it a natural position in that problem.

Lens Technology

Lens Technology brings precision glass processing into the semiconductor packaging conversation. Its value is less about being a conventional package-material supplier and more about the ability to manufacture glass with controlled geometry at high volume.

The July 2026 collaboration with Intel explicitly links Lens Technology’s precision glass processing to advanced packaging for AI and data-center workloads. The companies are exploring glass substrates intended to increase interconnect density and improve power efficiency.

For the industry, that partnership is important because scale manufacturing is often the missing step between a viable glass architecture and a qualified substrate supply chain. Precision processing, yield and surface quality will determine how quickly glass can move into production.

Samsung Electro-Mechanics

Samsung Electro-Mechanics is developing glass-core substrates in response to AI and server packages that require larger sizes, more layers and tighter interconnect density. Its strength lies in substrate manufacturing rather than glass as a raw material alone.

At the 2025 KPCA exhibition, Samsung Electro-Mechanics presented glass-core concepts for advanced AI/server FCBGA and described structures with more than 10× the area and more than 3× the layer count of conventional FCBGA substrates in selected designs. It also showed 2.1D and co-package concepts.

These figures illustrate why glass becomes attractive as package dimensions expand. Rigidity and dimensional stability can become limiting factors for organic substrates when engineers add more routing and more dies.

SKC / Absolics

SKC’s Absolics business is one of the most visible dedicated glass-substrate development efforts. It targets semiconductor packaging where large organic substrates face warpage and density constraints.

The platform uses glass as a rigid core for advanced packages and is designed around fine redistribution and through-glass interconnect concepts. Absolics has also developed its own manufacturing approach rather than relying only on third-party glass suppliers.

The strategic point is verticalization. A glass substrate requires coordinated control of material, via formation, metallization, build-up layers and final substrate assembly. A specialist that develops the full flow can shorten the path from technology demonstration to qualified package.

Ibiden

Ibiden is a major advanced-package substrate manufacturer with exposure to high-density packages for processors and AI accelerators. Its relevance to glass-core technology comes from the pressure on conventional organic substrates as package size and interconnect count increase.

The company’s package-substrate roadmap emphasizes fine wiring, high layer counts and thermal/electrical performance for demanding processors. Glass-core approaches are attractive within that ecosystem because rigidity can help control warpage over large package dimensions.

For buyers, the key issue is integration: a glass core only creates value when a substrate supplier can build reliable redistribution layers and assembly processes on top of it.

Shinko Electric Industries

Shinko Electric is a major semiconductor packaging and substrate supplier serving high-performance computing and advanced package structures. Its relevance comes from its ability to connect substrate design, package assembly and fine-pitch interconnects.

The company has a broad package-substrate portfolio that includes high-density flip-chip structures for advanced processors. As package size expands, the same manufacturing challenges—warpage, thermal expansion mismatch and routing density—drive interest in alternative core materials such as glass.

Shinko’s value therefore lies in process integration and qualification. In production, the glass core is only one element of a multilayer package that must survive thermal cycles and maintain electrical yield.

AT&S

AT&S develops high-density package substrates for processors, networking and high-speed computing, making it relevant to glass-core adoption even where current production still relies heavily on advanced organic substrate technologies.

The company’s technology roadmap emphasizes fine-line structures, high layer counts and package-level interconnect density. These are the same constraints driving research into stiffer core materials for larger AI packages.

Glass therefore represents a potential evolutionary step rather than a standalone category. Substrate vendors with mature build-up processes can evaluate glass when conventional materials approach their mechanical or dimensional limits.

Unimicron Technology

Unimicron is an established IC substrate manufacturer with strong exposure to high-density package substrates and advanced interconnect structures. Its relevance to glass-core development stems from the same scaling challenge facing all advanced substrate makers: more routing in larger areas without unacceptable warpage.

Advanced substrate manufacturing requires tight control of line/space, multilayer registration, dielectric behavior and thermal expansion. Glass can become attractive when those geometric constraints overwhelm the practical limits of an organic core.

The company’s competitive relevance is therefore tied to manufacturing know-how. If glass substrates are to become mainstream, suppliers will need to reuse existing high-density build-up and quality-control disciplines around a new core material.

How the Competitive Landscape Is Changing

The competitive landscape is separating into material specialists, dedicated glass-substrate developers and established IC-substrate manufacturers. Corning and AGC bring precision glass expertise; Absolics is focused directly on glass-core packaging; Intel is pulling the technology through the package system; and Samsung Electro-Mechanics, Ibiden, Shinko, AT&S and Unimicron bring volume substrate process knowledge.

The next competitive hurdle is not proving that glass can be fabricated. It is proving that glass-based packages can be built at acceptable yield, cost and throughput while meeting the reliability requirements of AI and data-center systems.

That makes process integration the likely differentiator: TGV formation, dielectric build-up, metallization, flatness control, thermal cycling and large-panel handling must work as one manufacturing chain.

Key Technology Trends Shaping the Top Players

Warpage Control Is Becoming a First-Order Design Variable

Corning reports warp reduction of up to 40% for relevant glass-carrier designs, while Intel is evaluating glass specifically for higher-density future packages.

As AI package sizes grow, mechanical deformation can disrupt lithography, bonding, assembly and reliability. A substrate that stays flatter can unlock larger packages without simply accepting lower yield.

Package Size Is Driving the Search for New Core Materials

Samsung Electro-Mechanics has shown glass-core structures more than 10× the area of conventional FCBGA examples in selected concepts, with more than 3× the layer count.

The key economic question is whether glass enables enough routing and package area to offset new process costs.

TGV Is Becoming a Strategic Enabler

AGC and Corning are developing through-glass-via approaches that create vertical electrical paths through the rigid substrate.

That architecture can shorten interconnects and support panel-level processing, but yield and via metallization remain crucial commercialization variables.

AI Is Accelerating Substrate R&D

Intel’s July 2026 collaboration with Lens Technology directly targets AI and data-center packaging, while Samsung Electro-Mechanics is exploring glass-core solutions for AI/server FCBGA.

The driver is structural: larger accelerators, more HBM connections and higher package power increase the penalty for warpage, routing congestion and long interconnect paths.