Wafer process control
This business sells inspection and metrology tools that chipmakers use during wafer fabrication to find defects, measure tiny features, and check process quality in semiconductor production lines.
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Onto Innovation makes inspection, metrology, and process-control tools used to build computer chips. Its machines help chipmakers and chip packaging plants find defects, measure tiny features, and keep production lines within spec. The company also sells related software, service contracts, and support that keep these tools running in factories.
Its main customers are semiconductor manufacturers, foundries, memory producers, and advanced packaging shops. These buyers use Onto’s tools at different steps of chip production, from wafer fabrication to packaging and final testing. Onto makes money mainly by selling equipment upfront and then earning recurring service, spare parts, and software revenue after the sale.
What makes Onto’s business important is that it sits in the quality-control layer of chipmaking. As chips get smaller and packaging gets more complex, manufacturers need more precise measurement and inspection to protect yield and reliability. That gives Onto a role as a specialized supplier that helps customers make better chips, not by making the chips themselves, but by helping factories see and control microscopic manufacturing problems.
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