Advanced IC substrates are specialized baseboards that package bare integrated circuit chips. They provide structural support, electrical connections, and heat management, and they link the chip to the printed circuit board. According to Polaris Market Research, the advanced IC substrates market was valued at USD 10.63 billion in 2025, with an estimate of USD 11.31 billion for 2026 and a projection of USD 18.89 billion by 2034, reflecting a CAGR of 6.60% over 2026–2034. This article focuses on package types, core materials, and capacity themes that matter to B2B buyers and suppliers.

Where Demand Comes From

The report identifies demand for high-performance electronics as a primary driver, specifically the need for higher circuit density and signal integrity in computing, consumer, automotive, and industrial devices. Investment in ABF and glass-substrate capacity, driven by AI, HPC, and larger packages, is another cited factor. The report also notes demand linked to EVs, IoT, and digital health devices. Historical data covers 2021 to 2024, with 2025 as the base year. By technology, the report lists HDI, build-up, coreless, organic, and ceramic categories, and by core material it lists ABF, glass, BT resin, ceramic, and others.

FCBGA Leads the Type Segment

FCBGA was the largest type in 2025, with a 39.68% share. It is used in CPUs, GPUs, networking, and AI accelerators. For substrate makers, FCBGA is therefore closely tied to the most demanding computing programs, where package size, layer count, and warpage control are all under pressure. The report also lists wire bond, embedded, and other types, although it gives no figures for them.

Advanced Packaging Formats

Advanced packaging is a central theme throughout the report, which cites heterogeneous integration, 2.5D/3D ICs, and high-bandwidth memory as drivers. By packaging technology, 2D flip-chip held the largest share at 39.67% in 2025, while 2.5D/3D packaging is projected to grow at a CAGR of 10.36%. In May 2026, ASE adopted automated 310 mm panel-level packaging for AI and HPC. For equipment and materials suppliers, these shifts show how advanced packaging is influencing capital planning across the value chain.

𝐁𝐫𝐨𝐰𝐬𝐞 𝐌𝐨𝐫𝐞 𝐈𝐧𝐬𝐢𝐠𝐡𝐭𝐬:

https://www.polarismarketresearch.com/industry-analysis/advanced-ic-substrates-market 

ABF as the Dominant Core Material

By core material, ABF held a 51.64% share in 2025, making it the largest category. Glass recorded the highest CAGR at 11.27%. The report notes that ABF demand for AI and HPC is straining production capacity. Vendors are responding: Samsung Electro-Mechanics is expanding ABF capacity in South Korea and Vietnam, and Ibiden is expanding its Ohno Plant in Japan for AI and server substrates. Capacity decisions of this kind matter to buyers, since the report lists concentrated supply chains among the challenges.

Glass-Core Substrates as an Emerging Opportunity

The report highlights glass-core substrates as an opportunity because of their dimensional stability and warpage control for large packages. In September 2026, Samsung Electro-Mechanics exhibited 2.5D, 2.1D, and glass substrate solutions. Unimicron holds a stake in a glass pilot line. While glass is the fastest-growing core material in the report, procurement teams should note that glass-core substrates face the same qualification and yield considerations that the report associates with advanced materials generally.

AI Accelerators and Application Demand

The report lists AI-accelerator packaging among its key trends, characterized by larger substrates, more layers, finer circuits, and better warpage control. By application, mobile and consumer electronics led in 2025 with a 35.74% share, while computing and data centers are projected to grow at a CAGR of 11.16%. This split suggests that AI accelerators and data-center programs are shaping the growth end of the market, even though mobile and consumer devices remain the largest application.

Regional Landscape

Asia Pacific was the largest regional market in 2025, with a 65.73% share, supported by an established packaging and substrate ecosystem. North America has the highest stated CAGR at 9.67%, with the U.S. holding a 69.45% share within the region in 2025. The report also cites TSMC's planned U.S. investment rising to USD 165 billion in July 2026, per NIST, and Amkor's Arizona facility. Europe is projected at 8.83% CAGR, with Germany holding a 28.43% share in 2025. Latin America is projected at 8.17% and the Middle East and Africa at 7.74%. Data-center growth is cited as a factor in the Middle East and Africa.

Competitive Landscape and Key Players

Rivalry among existing firms is rated high, and the threat of new entrants is rated low. Supplier and buyer bargaining power and the threat of substitutes are each rated moderate. The report lists high manufacturing cost, capital intensity, and complex qualification among the restraints. Key players include ASE Technology, AT&S, Daeduck Electronics, Ibiden, JCET Group, Kinsus Interconnect, Kyocera, LG Innotek, Nan Ya PCB, Samsung Electro-Mechanics, Shennan Circuit, Shinko Electric, SIMMTECH, Toppan, TTM Technologies, and Unimicron.

Conclusion

The advanced IC substrates market is being shaped by package complexity, material choices, and capacity investment. FCBGA leads by type, ABF leads by core material, and glass-core substrates are the highest-growth material category. As advanced packaging and AI accelerators raise technical requirements, suppliers that can scale capacity while managing qualification and cost are best placed. With USD 18.89 billion projected by 2034, careful segment selection is essential.

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