日本語 
Rigaku Holdings Corporation just made a move that is pretty direct. It is taking a 27 percent equity stake in Onto Innovation Inc. and tying that into a broader business alliance. This is not one of those loose partnerships companies announce and forget. There is capital involved, which usually means skin in the game and a longer commitment.
The backdrop here matters. Semiconductor manufacturing is getting harder to measure, not easier. As devices become more complex, the need to understand what is happening at a very fine level inside the process becomes critical. Rigaku has built its strength around X-ray analytical technologies. Onto Innovation comes in with optical metrology and analytics software, including AI-driven tools. Both solve different parts of the same problem.
They have already been working together before this. One example is the integration of Rigaku’s CD-SAXS with Onto’s analytics software. So this is not a cold start. What changes now is the scale and intent. The new agreement is meant to push that joint development further and faster.
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The end goal is pretty clear. Build hybrid metrology solutions that combine X-ray, optical measurement, and software intelligence into one system. The target sits right in semiconductor process control, where precision is everything and even small errors can ripple across production.
So if you step back, this is Rigaku trying to stay relevant as the industry shifts. Not by building everything alone, but by locking in a partner that fills the gaps and pushing together into a space that is only getting more complex.
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