Nanometrics and Rudolph merged into Onto Innovation: how process control became a broader chipmaking platform
Onto Innovation was created in October 2019 through the merger of equals between semiconductor process-control companies Nanometrics and Rudolph Technologies.
The combination brought together metrology, inspection, lithography and software used from wafer fabrication through advanced packaging.
The important part of this history is the sequence. Each major step gave Onto Innovation another layer of capability, and later products or markets often depended on work that began years earlier.
Nanometrics brought decades of optical metrology
Nanometrics had roots in semiconductor measurement systems used to monitor film thickness, dimensions and process consistency inside wafer fabs.
In semiconductor and electronics markets, this kind of capability compounds over time. Manufacturing know-how, yields, supplier relationships and process experience are difficult to recreate quickly, so each generation can strengthen the next.
Rudolph added inspection, software and packaging exposure
Rudolph Technologies contributed defect inspection, process-control software and lithography systems, especially for advanced packaging.
In semiconductor and electronics markets, this kind of capability compounds over time. Manufacturing know-how, yields, supplier relationships and process experience are difficult to recreate quickly, so each generation can strengthen the next.
The 2019 merger created a broader process-control supplier
The combined company adopted the Onto Innovation name and positioned itself across both front-end wafer manufacturing and advanced packaging.
The transaction mattered because it changed the shape of Onto Innovation rather than simply adding revenue. It brought additional technology, customers, geographic reach or operating capability into the group and influenced the next stage of its strategy.
Chiplets increased the importance of packaging inspection
Heterogeneous integration and advanced packages require precise measurement and defect control beyond the wafer itself, widening the addressable market for Onto’s tools.
In semiconductor and electronics markets, this kind of capability compounds over time. Manufacturing know-how, yields, supplier relationships and process experience are difficult to recreate quickly, so each generation can strengthen the next.
The merger anticipated a chip world where the package matters as much as the die
As of 18 September 2026, onto Innovation now supplies metrology, inspection, lithography and analytics to semiconductor manufacturers. Its history is a deliberate combination of two specialist tool companies whose technologies became more valuable as chipmaking complexity moved into packaging.
The distance between “Nanometrics brought decades of optical metrology” and “Chiplets increased the importance of packaging inspection” captures the larger story: Onto Innovation kept extending the value of its original expertise into new products, markets or infrastructure.
For TechnologyBlog.co.za, this page is intended to serve as the company-history cornerstone for future Onto Innovation coverage, so product and company-news articles can link back to one factual brand background instead of repeating the full origin story.
Primary sources checked include Onto Innovation’s 2019 merger announcements and annual reports. Information reflects public material available on 18 September 2026. Official company identity cross-checked against http://www.ontoinnovation.com.
