EDP (E-D-P) is making significant strides in the development of single-crystal diamond substrates for advanced applications in semiconductors and quantum devices. The company is systematically pursuing larger diameter substrates to meet the growing demands of next-generation technology.
The ambitious plan is set to culminate in the development of a 4-inch diamond substrate by March 2029. This will be achieved by connecting 50x50mm substrates. Crucially, EDP is simultaneously focused on parallel technological advancements, including improving polishing and epitaxial (epi) growth techniques that are essential for high-quality substrates.
Leveraging its proprietary large-scale single-crystal diamond manufacturing technology, EDP has already demonstrated strong growth, with sales revenue expanding by 40% year-over-year in the 2024 fiscal year.
Looking forward, the company's development roadmap centers on several key areas: achieving higher quality and larger sizes for quantum device substrates, and increasing the size of low-resistance substrates for power semiconductor devices. To support these goals, EDP has allocated a total of 300 million yen for capital investment between October 2025 and March 2027. Furthermore, to ensure the highest quality epitaxial growth in the future, EDP is considering establishing a dedicated, cleanroom-equipped factory or manufacturing space. This commitment signals EDP's dedication to becoming a leader in the foundational materials for high-performance electronics and quantum computing.
