The Chemical Companies Making AI Chips Possible

The chemistry scales with process complexity

The semiconductor materials market is already reflecting that shift. SEMI said global semiconductor materials revenue reached a record $73.2 billion in 2025. Wafer-fabrication materials grew to $45.8 billion, while packaging materials rose 9.3% to $27.4 billion. Lithography materials and wet chemicals posted strong double-digit growth as advanced processes required tighter patterning and more material-intensive manufacturing.[2]

That is the key mechanism. A leading-edge chip is not made by buying one lithography system and running silicon through it. Each wafer repeatedly moves through patterning, deposition, etch, cleaning and planarization. Photoresists define the patterns. Ultra-high-purity acids and formulated cleans remove residues and particles without damaging increasingly fragile structures. Chemical vapor deposition and atomic layer deposition precursors build thin films. Specialty gases feed deposition, etch and ion-implant steps. CMP slurry removes material with extremely tight control so the next layer can be built on a flat surface.

Then the process starts to resemble a second chemical supply chain at packaging. AI accelerators increasingly sit beside stacks of high-bandwidth memory and depend on advanced interconnects. Underfills, molding compounds, encapsulants, die-attach materials and thermal materials become part of maintaining mechanical integrity, protecting fine connections and managing heat. AI demand can therefore increase materials intensity in two places at once: at the front end as nodes become more complex, and at the back end as packages integrate more dies and memory.

The public-company map is broader than most semiconductor screens suggest. Shin-Etsu Chemical and Tokyo Ohka Kogyo participate in advanced lithography materials. Entegris sells deposition materials, CMP slurries and pads, specialty gases, formulated etch and clean materials, plus filtration and contamination-control systems. Resonac and Shin-Etsu participate in semiconductor packaging materials, while Linde and Air Liquide sit in the electronic-gases layer. Specialist materials companies such as Fujimi add further CMP exposure.

Entegris is particularly useful as a read-through because multiple parts of the chemical stack sit inside one company. Its second-quarter 2026 sales reached $883.2 million, up from $792.4 million a year earlier. The company explicitly ties its Materials Solutions business to CVD and ALD materials, CMP consumables, ion-implantation specialty gases and etch and clean formulations, while its Advanced Purity Solutions business focuses on keeping critical liquid chemistries and gases free of contamination.[3] That is not peripheral infrastructure. At advanced nodes, contamination control is part of the process window.

Where the economic dependence sits

The Altsets relationships suggest a different exposure pattern from the concentrated customer stories common elsewhere in the AI supply chain. TSMC is meaningful to Shin-Etsu, but it is not remotely the majority of Shin-Etsu's revenue. Shin-Etsu also supplies Micron, Samsung Electronics and Intel. That matters because the materials supplier can participate across foundry, logic and memory cycles without requiring one customer to dominate its economics.

The downstream relationships can be much more concentrated. Nvidia represents 17.62% of Micron revenue, and it represents 27.88% of SK Hynix revenue in Altsets data. In other words, the memory makers can have large direct exposure to the AI accelerator cycle even while an upstream chemical supplier captures smaller pieces across several manufacturers.

The investment exposure is therefore different. Micron and SK Hynix provide a more concentrated read-through to AI memory demand. A diversified chemical supplier can provide a broader read-through to manufacturing intensity across multiple fabs, nodes and device types. Rather than depending only on which accelerator wins share, the materials supplier can benefit from the recurring process steps required to manufacture advanced logic, HBM and other leading-edge semiconductors.

That distinction also changes how investors should think about bottlenecks. A chemical does not need to represent a large percentage of a chipmaker's COGS to be operationally important. Semiconductor manufacturing depends on qualification, purity and process repeatability. A low-cost input can still be difficult to replace quickly if changing it requires requalification or creates yield risk. Altsets cost percentages measure economic weight, not technical substitutability, so they should not be read as a complete measure of manufacturing dependence.

Conclusion

The AI semiconductor buildout is becoming a materials story as much as an equipment story. TSMC's 2 nanometer ramp, HBM growth and advanced packaging expansion increase the number of process steps in which specialized chemicals are consumed. The less obvious public-company exposure sits with businesses supplying photoresists, high-purity cleans, deposition precursors, CMP consumables, specialty gases and packaging resins across several major chipmakers.

The useful investment distinction is between concentrated downstream exposure and diversified upstream process exposure. Nvidia can be economically important to a memory supplier, while TSMC, Micron, Samsung and Intel collectively create a broader demand base for an upstream materials company such as Shin-Etsu. As AI chips become harder to manufacture and harder to package, the chemical layer becomes more important even when no single materials supplier dominates a customer's cost structure.

Sources

1. TSMC 2026 Q2 Quarterly Results and earnings conference transcript, Taiwan Semiconductor Manufacturing Company, July 16, 2026, https://investor.tsmc.com/english/quarterly-results/2026/q2

2. "Global Semiconductor Materials Market Revenue Reaches Record $73.2 Billion in 2025, SEMI Reports," SEMI, May 12, 2026, https://www.semi.org/en/semi-press-release/global-semiconductor-materials-market-revenue-reaches-record-73.2-billion-dollars-in-2025-semi-reports

3. "Entegris Reports Results for Second Quarter of 2026," Entegris, August 4, 2026, https://investor.entegris.com/news/news-details/2026/Entegris-Reports-Results-for-Second-Quarter-of-2026/default.aspx

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