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Disco Corporation
Disco makes the precision machines that cut, grind, and polish silicon wafers into individual chips.
Disco is a Japanese maker of the machines that turn a finished silicon wafer into usable chips. Its two big product families are dicing saws, which slice a wafer into hundreds or thousands of separate chips, and grinders, which thin the back of a wafer before it gets cut. Chipmakers worldwide buy these tools, and Disco also sells the consumable blades and polishing pads that wear out and must be replaced.
The business is best understood from the problem it solves. A silicon wafer is a thin disc holding hundreds of identical circuits. To become chips, it has to be cut apart without cracking, chipping, or smearing the delicate structures on top. Disco's saws use ultra-thin blades spinning at high speed to make those cuts with microscopic precision, a bit like a deli slicer engineered to shave a hair without nicking anything nearby. The consumable blades are a quiet, recurring revenue stream: customers keep buying them as long as the machines keep running. Disco is also riding two big industry shifts. Chips for artificial intelligence and high-bandwidth memory need to be stacked, which means wafers must be ground extremely thin and then cut with new techniques such as laser and plasma dicing that Disco has developed alongside its mechanical saws. And because advanced packaging is becoming a bigger part of chipmaking, Disco sells more of the tools and services around that step. The company also makes equipment for other precision jobs, such as polishing wafers and cutting hard materials like glass and ceramics.
Its position is strong but not untouchable. Disco dominates the dicing saw market and competes mainly with Tokyo Seimitsu and a handful of others, and its machines are deeply embedded in customers' production lines, which makes switching costly. The risk is that chipmakers cut capital spending in a downturn or that a rival catches up on the newer laser and plasma tools. Disco is headquartered in Tokyo and has been paying dividends and buying back shares with its cash, a sign management sees limited need to hoard it.
Saved answer · last researched 12 Nov 2026