Grinding wheels became wafer saws: how DISCO turned precision cutting into semiconductor infrastructure
DISCO traces its roots to 1937, when Mitsuo Sekiya established Dai-Ichi Seitosho in Hiroshima to manufacture vitrified grinding wheels.
The company specialised in abrasive technologies before moving into precision machinery for cutting and grinding semiconductor materials.
That starting point is useful context for understanding the modern Disco Corp.. The company did not arrive at its current position in one jump; it accumulated technology, customers and operating knowledge through a series of distinct transitions.
Ultra-thin blades created the bridge from abrasives to electronics
DISCO developed thin precision blades during the post-war period, allowing increasingly delicate materials to be cut with less damage.
This was an important turning point because it expanded what Disco Corp. could offer or the markets it could address. The effect becomes clearer when viewed as part of the longer sequence of changes that followed.
Dicing equipment turned a materials company into a machinery company
As semiconductor wafers needed to be separated into individual dies, DISCO developed precision dicing saws and related equipment.
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.
Grinding and polishing became critical as wafers became thinner
The company expanded into back-grinding systems and processes used to reduce wafer thickness for compact packages and stacked devices.
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.
Advanced packaging increased demand for micron-scale accuracy
Chiplets, power devices and stacked memory require precise cutting, grinding and handling of fragile semiconductor materials, keeping DISCO’s specialised equipment relevant at leading packaging nodes.
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 abrasive stayed; the precision changed by orders of magnitude
As of 18 September 2026, dISCO now supplies precision processing equipment and tools for semiconductors and advanced materials. Its history is unusual because a grinding-wheel maker evolved into a critical chip-equipment company without abandoning the underlying science of abrasives.
The distance between “Ultra-thin blades created the bridge from abrasives to electronics” and “Advanced packaging increased demand for micron-scale accuracy” captures the larger story: Disco Corp. 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 Disco Corp. 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 DISCO Corporation’s official corporate-history timeline. Information reflects public material available on 18 September 2026.
