Global ABF (Ajinomoto Build-up Film) Market Strategic Research Report

Scope of the Report

The global ABF (Ajinomoto Build-up Film) market size is predicted to grow from US$ 503 million in 2025 to US$ 1,069 million in 2032; it is expected to grow at a CAGR of 11.3% from 2026 to 2032.

ABF, otherwise known as “Ajinomoto Build-up Film” is a resin substrate that acts as an insulator in all modern ICs. The ABF is a highly durable and rigid film that resists expansion and contraction with changes in temperature, making it ideal for use as a substrate between the nanometer-scale and millimeter-scale components of a processor or IC.

Ajinomoto Build-Up Film® (ABF) is used as an insulating material for high-performance semiconductors (CPUs), which are the heart of personal computers. ABF currently boasts a share of nearly 100% of the market for Insulation film used in major personal computers worldwide.

This report studies the ABF (Ajinomoto Build-Up Film), covering the Ajinomoto Fine-Techno’s Ajinomoto Build-Up Film® (ABF), and other players’ Build-up Dielectric Films (for FC-BGA substrates).

Currently, the key player of ABF is Ajinomoto Fine-Techno. Other players include Sekisui Chemical Co., Ltd., WaferChem Technology Corporation, Taiyo Ink, Wuhan Sanxuan Technology, Shenzhen EPS Technology and Elite Material Co.,Ltd, etc.

Ajinomoto Build-up Film™ (ABF) is a film-type thermosetting interlayer insulating dielectric used to build high-density multilayer package substrates (typically FC-BGA / “ABF substrates”); its core product forms in industry practice include (i) dielectric film supplied for lamination in build-up stacks and (ii) adjacent supply formats and intermediates such as varnish-to-film manufacturing chains (varnish applied on carrier film) that underpin volume production and conversion. ABF’s dominant applications are PC and workstation processors, servers/data centers, network equipment, and increasingly AI/HPC platforms—i.e., packages where signal integrity, wiring density, and substrate reliability are critical. The current competitive landscape remains highly concentrated: Ajinomoto discloses >95% global share for insulating films used in high-performance semiconductors, while Ajinomoto Fine-Techno’s ABF page claims near-100% share in major PCs and positions ABF as the incumbent insulation film standard in that ecosystem. At the same time, the market is actively cultivating qualified alternatives in the same functional category (build-up dielectric films); for example, Sekisui markets thermosetting build-up dielectric films for FC-BGA, asserting SAP-line compatibility and adoption by major substrate suppliers (Japan/Taiwan) with OSAT assembly experience—illustrating that “second-source” development is technically and commercially underway even if the incumbent remains dominant.

Industry trends and demand drivers are increasingly defined by AI/HPC-led substrate complexity and throughput rather than legacy PC-only growth. Ajinomoto’s ICT briefing explicitly ties ABF demand to telecommunications and information infrastructure growth (servers, data centers, networks), and quantifies the key structural driver as ABF intensity per substrate rising sharply: a representative comparison shows PC substrates using 6 ABF layers versus HPC substrates using 18 ABF layers, with larger substrate surface area (index 3.5) and an implication of >10× ABF usage per high-performance CPU substrate—a “double effect” of more units plus higher material per unit. On the technology side, the roadmap focuses on lower dielectric loss (Df) for higher-speed signaling, alongside warpage control, crack resistance, and manufacturability for finer line/space in SAP build-up; Sekisui’s development messaging explicitly references lowering Df to meet 224Gb Ethernet switch needs and beyond, reflecting where next-generation electrical requirements are headed. Supply-side responses therefore center on capacity assurance, qualification throughput, and multi-source risk mitigation: the incumbent leverages its de facto standard position (and long qualification history since first commercialization) while expanding and hardening supply chains, and challengers pursue SAP-compatible, low-loss build-up films to win incremental share through customer qualification programs in FC-BGA and adjacent advanced packaging nodes.

The global ABF (Ajinomoto Build-up Film) market size was US$ 514.07 million in 2024 and will reach US$ 1,069.09 million in 2032; it is expected to grow at a CAGR of 10.93% from 2026 to 2032.

The ABF (Ajinomoto Build-up Film) are mainly produced in Japan, about 98.66% ABF films are produced in Japan. In addition to Japan, China Taiwan and China mainland also produce small ABF films. Chiniese is expected to play an important role in the coming years.

Global key manufacturers of ABF (Ajinomoto Build-up Film) include Ajinomoto Fine-Techno, Sekisui Chemical Co., Ltd., WaferChem Technology Corporation, and Taiyo Ink, etc. Ajinomoto Fine-Techno is dominating the global ABF (Ajinomoto Build-up Film) market, with a share about 96.42 percent. In next few years, more companies are expected to enter ABF (Ajinomoto Build-up Film) market. Currently, potential entrants include Zhuhai Hongchang Electronic Materials, Xi'an Tianhe Defense Technology, LOTUS HOLDINGS, and Guangdong Hinnotech New Materials Technology.

In terms of ABF Film sales (consumption), China Taiwan, Japan, South Korea, China mainland and Southeast Asia are the key market, with market shares 41.88%, 27.13%, 10.99%, 13.91%, and 5.71% respectively. The global ABF substrates are mainly produced in these regions. In future, there regions will still dominate the global ABF substrates market. The global key manufacturers of ABF Substrate include Unimicron, Ibiden, Nan Ya PCB, Shinko Electric Industries, Kinsus Interconnect, AT&S, Semco, Kyocera, and TOPPAN, etc. In 2025, the global top seven players had a share approximately 91.86% in terms of revenue. Key end users are Intel, AMD, Nvidia, Apple, and Samsung, etc. In 2025, the key end users are heating up competition to win more capacity support from suppliers of ABF substrates needed to process their HPC chips through at least 2026. Almost all of ABF substrates manufacturers have plans to expand production capacity in next few years, and there also several companies have planned to enter to produce ABF substrates. The global competitive situation will be totally different after two or five years, filled with uncertainty.

Key Questions Addressed in this Report

What is the 10-year outlook for the global ABF (Ajinomoto Build-up Film) market?

What factors are driving ABF (Ajinomoto Build-up Film) market growth, globally and by region?

Which technologies are poised for the fastest growth by market and region?

How do ABF (Ajinomoto Build-up Film) market opportunities vary by end market size?

How does ABF (Ajinomoto Build-up Film) break out by Df (5.8GHz), by Application?

This report presents a comprehensive overview of the global ABF (Ajinomoto Build-up Film) market, covering market size and forecast, segmentation by product type and application, competitive landscape, leading players and regional and country-level outlook.

Segment by Df (5.8GHz)

• Df ：Above 0.01
• Df ：Below 0.01

Segment by ABF Substrate Layers

• 4-8 Layers ABF Substrate
• 8-16 Layers ABF Substrate
• Others

Segment by Application

• PC
• Servers & Data Center
• HPC/AI Chips
• Communication Base Station
• Others

Who Can Use This Report?

This report is written for decision-makers who need a clear, data-backed view of the global ABF (Ajinomoto Build-up Film) market:

• Manufacturers, suppliers and solution providers benchmarking their position and planning product, capacity and go-to-market strategy
• Distributors, channel partners and end users in PC, Servers & Data Center, HPC/AI Chips evaluating demand and sourcing options
• Investors, financial analysts and consultants assessing growth opportunities, competitive dynamics and M&A potential
• Government agencies, industry associations and research institutions tracking industry developments and policy impact