Shenzhen Essenvape Technology Co., Ltd. , https://www.essenvape.com
The ultra-thin Invar alloy plate making technology of electroforming has been successfully developed and officially introduced into China.
Invar alloy sheets, a type of nickel-iron alloy, are known for their extremely low thermal expansion coefficient, allowing them to maintain a stable length across a wide temperature range. This unique property makes them an essential material in the manufacturing of OLED panels, particularly as the core component of the metal mask (FMM). In addition to OLEDs, ultra-thin Invar plates are also used in other semiconductor applications.
Currently, the thinnest ultra-thin Invar plate produced in mass quantities is 20 micrometers thick, and only Hitachi Metals had the capability to produce this standard before recently. However, due to an exclusive supply agreement with Samsung Electronics, other companies, including Chinese OLED manufacturers, have faced significant challenges in accessing this critical material. This has hindered the growth and innovation of China’s OLED industry, leading to stagnation in product development and technological advancement.
The demand for high-precision Invar sheets continues to rise as display technologies evolve. The ability to produce ultra-thin Invar alloy plates is now considered a key enabler for the next generation of electronic displays—offering smoother, more accurate, and higher-quality results. Without access to this material, many technology firms struggle to keep up with global standards.
However, there is good news on the horizon. South Korean company Crea Future has successfully developed electroforming technology for ultra-thin Invar alloy sheets, with thicknesses ranging from a few micrometers to 20 micrometers. As the exclusive business agent in China, Nanjing Grass Man Information Technology Co., Ltd. (GNG) has taken on the responsibility of introducing this groundbreaking technology to the domestic market. This partnership marks a major step forward for China’s OLED industry.
With a production yield exceeding 90%, the technology is already at the stage of mass production. Korea Crea Future is also working on automated production lines to further enhance efficiency. Their technical expertise in developing FMMs positions them as a strong player in the global market. If this technology is successfully introduced into China, it could significantly accelerate the growth of the country’s OLED industry.
Ultra-thin Invar alloy sheets are not just important for OLEDs—they are also being explored for use in satellites, lasers, and ring laser gyroscopes. As the application fields expand, so does the need for reliable and high-quality materials. Research and development efforts in China continue to push the boundaries, and the successful introduction of this technology by GNG represents a turning point.
As the designated exclusive agent, GNG plays a crucial role beyond simple technology transfer. They are actively working with local electronics companies to integrate this advanced material into their R&D and production processes. Their goal is to break the monopoly held by Hitachi Metals and Samsung, providing a viable alternative for the urgent need of ultra-thin Invar sheets in China.
Looking ahead, the future of ultra-thin Invar technology appears promising. With continued innovation and collaboration, China has the potential to lead in the global OLED and display technology sectors. Nanjing Grass Man Information Technology Co., Ltd. (GNG) is committed to supporting this vision and hopes to partner with more companies to drive the industry forward and open a new era for Chinese OLED panels and display technologies.