FINESET | EPD ink screen application OCA market share is gradually increasing

  Chain, after nearly half a year of production capacity climbing, the cumulative total shipments have exceeded 1 million units recently, and it has now occupied more than 80% of the paper white e-book project.

EPD display, also known as electrophoretic display, is an early development of paper-like display technology. The ball moves in the liquid environment by applying an electric field, and presents different color display effects. Representative manufacturers include E-Ink and so on. EPD screen technology combines the advantages of ordinary paper and electronic displays. It has a display effect close to that of ordinary paper, and at the same time consumes very little power. It only consumes power when the content needs to be updated, which makes it popular among many display technologies. Stand out and become one of the flexible electronic display technologies with great development potential. At present, in addition to a large number of applications in the field of electronic readers, it is also widely used in electronic tags, electronic badges, digital bank cards and other fields. At the Beijing Winter Olympics that just ended not long ago, EPD displays were also used in the credentials of participating athletes and staff.

Different from the structure of common LCD/OLED displays, EPD displays use a large number of polymers such as PC/PMMA Materials and require multiple layers of OCA optical glue to fully fit different parts into a whole. Such a screen structure has the characteristics of complex bonding structure, various materials, and high difficulty in the bonding process. It has extremely high requirements for OCA optical glue. Monopolized by big factories.

  Hitachi is one of the pioneers in the OCA optical adhesive industry, and is the main supplier of smartphones and Pad products in the early stage, with profound technical background. In 2016, through the complete acquisition of Hitachi Chemical’s Optical Adhesive Division, Versatile has mastered Hitachi Chemical’s complete OCA technology and patents, and is determined to innovate on the basis of inheriting Japanese technology, and has continuously developed OCA optical adhesive products for new applications. Currently The products have been widely used in mobile phones, tablets, laptops, e-books, vehicles and other applications, and successfully entered Amazon, Huawei, Samsung, Xiaomi, OPPO, Lenovo, HP, Transsion and other internationally renowned terminals, becoming the leader of domestic OCA optical adhesives enterprise.

       This OCA product for EPD displays is a brand new product developed by investing in research and development resources in response to customer needs in 2019 , on the basis of the original Hitachi technology, it has overcome many difficulties such as material selection and production process, and finally completed the finalization in 2021, successfully passed customer certification, and entered mass production.

       This OCA optical adhesive product is the first in China, breaking the monopoly of international major manufacturers on EPD OCA optical adhesive, and has a complete Its independent intellectual property rights have the characteristics of good weather resistance, high transmittance, and good compatibility with PC/PMMA and other substrates. It meets the most stringent weather resistance requirements of North American customers in similar products, and can pass RA 1000 hours. test. At the same time, in order to support the country's carbon peak strategy, the industry's advanced solvent-free method is adopted for production, with zero emissions throughout the process. Fansaite has applied for patent protection for this product. At present, this product is not only supplied to North American customers in batches, but also favored by first-line domestic brands. It has been mass-produced and tested in a number of domestic e-book projects such as 9.5-inch and 10.3. It is expected to be mass-produced and put on the market within this year.