JSR is preparing to build its first photoresist production facility in Taiwan, a move aimed at putting the Japanese materials supplier closer to TSMC and the advanced chip processes that depend on constant materials tuning.
The company has reportedly created a joint venture with a local partner and is targeting a possible start of operations as early as 2028. The investment is described as being in the tens of millions of dollars, which is modest by fab standards but significant for a specialized materials site built around close customer collaboration.
For chip buyers and semiconductor supply-chain teams, the important point is not simply that JSR wants another factory. It is that photoresist development at leading-edge nodes has become too iterative, too sensitive, and too customer-specific to manage efficiently from far away. A local Taiwan plant would give JSR a better position in one of the most important chipmaking clusters in the world.
Why Taiwan Matters for Photoresist Development
Photoresist is the light-sensitive material used in lithography to transfer circuit patterns onto silicon wafers. In simple terms, it helps define where features are formed on the chip. In advanced manufacturing, that simple description hides a difficult reality: the resist has to work with the exposure tool, the process flow, the etch chemistry, and the target pattern density.
At mature nodes, a supplier can often support customers with a more standardized product set. At the leading edge, the relationship is much tighter. The foundry and materials supplier have to test, adjust, and retest formulations as process assumptions change. Small differences in sensitivity, line-edge roughness, defect behavior, or etch resistance can matter.
That is why physical proximity has become a commercial advantage. If a materials supplier can work near the customer’s development teams, samples can be made, tested, and revised faster. Engineers can compare results with less delay. Problems that would otherwise take weeks to cycle through can be compressed into a shorter development loop.
JSR has reportedly been supporting Taiwanese customers by shipping samples from facilities in Japan, the United States, and Belgium. That model can work, but it slows each iteration. For a foundry like TSMC, where leading-edge process windows are narrow and schedules are unforgiving, local support can be more than a convenience.
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JSR Is Trying to Close a Competitive Gap
The planned Taiwan facility would also address a clear competitive gap. JSR is one of Japan’s major photoresist makers, but its two largest domestic rivals, Tokyo Ohka Kogyo and Shin-Etsu Chemical, already have production operations in Taiwan.
That local presence gives those competitors a practical advantage. They can work directly with TSMC from nearby sites, support development more quickly, and build deeper process familiarity over time. In leading-edge semiconductor materials, that kind of access can shape future supply positions long before a process reaches high-volume manufacturing.
JSR’s proposed plant appears designed to put the company on similar footing. A Taiwan base would allow it to embed engineers closer to TSMC’s development work and respond faster when formulations need adjustment. It could also make JSR a more credible candidate for future process generations where the resist is not a generic consumable, but part of the process recipe.
For buyers, that distinction matters. The most advanced chip materials are not purchased only on price. Customers care about yield impact, defect performance, supply reliability, engineering responsiveness, and whether a supplier can keep up with the roadmap. A company that can co-develop in the same region as the customer has a stronger commercial case.
JSR is also said to be considering other materials at the Taiwan site, including abrasives used in semiconductor substrate smoothing. That would fit a broader strategy: use the site not only as a photoresist plant, but as a local platform for multiple process materials tied to advanced manufacturing.
The Bigger Push Into EUV and Metal Oxide Resist
The Taiwan plan comes as JSR is also investing in next-generation resist technology outside Japan. The company is building a production-scale metal oxide resist facility in South Korea, with mass production expected to begin this year. That plant is meant to support major South Korean memory manufacturers with tin-based metal oxide resist for EUV lithography.
Metal oxide resist, often shortened to MOR, is viewed as an important option for advanced EUV patterning because it can absorb EUV photons more efficiently than conventional chemically amplified resists. In practical terms, better EUV absorption can help with resolution and defect control, two of the biggest pain points in advanced lithography.
The technology is especially relevant as the industry moves toward more demanding EUV and high-NA EUV processes. At 2nm-class production and beyond, chipmakers need materials that can support extremely fine patterning without creating unacceptable defect rates or process variability.
JSR has tied its MOR strategy to Inpria, the specialist company it says it acquired in 2021, and to tin-oxide-based formulations developed for advanced EUV use. Because this area is still technically demanding and commercially sensitive, it is better understood as a strategic direction than a guaranteed market outcome. Still, the company’s investments show that it wants to compete where the next resist transition is likely to happen.
For TSMC, MOR could become one of several materials paths evaluated for future nodes. For JSR, having both a South Korean MOR production base and a planned Taiwan site would place it nearer to the two most important advanced semiconductor manufacturing ecosystems in Asia.
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Japan Still Holds the Strong Position in High-End Resists
Japanese suppliers remain central to the global photoresist market, especially at the advanced end. Industry estimates commonly place Japanese companies in control of most global photoresist supply, with an even stronger position in the EUV segment.
That dominance is not accidental. Photoresist development depends on decades of chemical know-how, tight process control, long qualification cycles, and trusted relationships with major chipmakers. Once a resist is qualified into a production flow, switching suppliers is not simple. A different material can affect yield, defectivity, and downstream process behavior.
Chinese materials companies have made progress in some older lithography segments, particularly around i-line and KrF resists. Their position at ArF and more advanced layers appears much more limited, based on the industry’s current supplier structure. Reported comments from JSR’s electronic materials leadership suggest the company sees Chinese competitors as a longer-term threat, but not yet as direct peers at the most advanced levels. That assessment has not been independently verified here, so it should be treated as the company’s reported view rather than a settled market conclusion.
The more immediate competitive pressure for JSR is not from emerging suppliers. It is from established Japanese rivals that already have local Taiwan operations and customer access. In that sense, the Taiwan plant is less about expansion for its own sake and more about keeping pace with the operating model that advanced chip manufacturing now requires.
What This Means for TSMC and Chip Supply Chains
For TSMC, another major resist supplier with Taiwan production could improve development flexibility. It may shorten testing cycles, broaden supplier options, and reduce some friction in materials qualification. That does not mean JSR automatically wins more business, but it gives the company a better chance to compete for future work.
For the broader semiconductor supply chain, the project points to a familiar pattern: critical materials are moving closer to the customers that define the leading edge. Governments often focus on fabs, packaging capacity, and lithography tools, but materials are just as important to process execution. A chip plant cannot run at the frontier if the chemicals, gases, wafers, resists, and polishing materials are not qualified and available at the right performance level.
The planned timing also matters. If the plant comes online around 2028, it would arrive as TSMC is expected to be deep into 2nm-class production and preparing later process generations. Those nodes will place even more pressure on lithography materials, especially as EUV patterning becomes more complex and high-NA EUV adoption moves closer to production use.
For commercial buyers watching the semiconductor materials market, JSR’s Taiwan move is worth tracking for three reasons:
- It could reduce development cycle time for photoresists used by Taiwanese customers.
- It brings JSR closer to TSMC, one of the most important customers for advanced lithography materials.
- It may strengthen JSR’s position in future EUV and high-NA EUV process development.
None of those outcomes is guaranteed. The plant still has to be built, qualified, staffed, and integrated into customer development programs. But the logic is clear. In advanced chipmaking, distance slows learning. JSR’s Taiwan plan is a bet that being closer to TSMC will help it stay relevant in the most technically demanding part of the photoresist market.