OCA optical adhesive is the most important rubber in the intelligent electronic products industry. With the increasingly strict requirements for narrow frame sizing, OCA optical adhesive will gradually replace the general adhesive and become the mainstream of the market.


Image source: Tesa


OCA optical adhesive


OCA optical adhesive is one of the raw materials of the important touch screen. The optical acrylic adhesive is made into a non-substrate, and then a layer of release film is attached to the upper and lower layers, which is a double-sided adhesive tape without a base material. In the photoelectric material, the adhesive is mainly used. The OCA optical adhesive can adhere the touch module to the protective glass to achieve high optical penetration, structural impact resistance and image contrast improvement, and high adhesion and high moisture resistance. Properties, low shrinkage stress, fast UV curing and other characteristics.


OCA glue must withstand more than 200,000 times of bending and the function is not affected. It needs to have certain fluidity during the bending and spreading process while maintaining the viscosity, so the technical difficulty is greatly improved compared with the past.


OCA die cutting


OCA optical die-cutting processing factory generally uses optical plastic die-cutting technology, optical glue product punching and hole-punching technology, and optical glue linear bubble position adjustment technology. Through the purchase of OCA optical collagen materials, and then according to different customer's different full bonding process for OCA structural design, precision die-cutting processing or slitting and other initial processing and sales to the touch screen or display module assembly plant, and through the optical glue The in-depth knowledge of the features helps downstream manufacturers to better apply optical glue to establish a more comprehensive and close relationship with downstream manufacturers.


The rise of domestic OCA


There are also many domestic enterprises that independently research and develop OCA optical adhesives. According to statistics, there are currently Jiayun Optics, Fansett, Zhengxian, Jiacheng, Touch Silver, Liwang, Stich, Xinlun Technology, Baoli, Hui. Gu, Fuyin and other companies have put into production optical tape. At present, the number of OCA optical tape coating lines in the country has exceeded 20.


In recent years, the domestic layout has continued, and the competition focus of the OCA optical adhesive market has shifted from the outside to the inside. (The following companies are ranked in no particular order)


Fuyin Group


It is an early enterprise that entered the field of OCA optical adhesives in China. At the end of 13th, it began to invest in the production of OCA optical adhesive. It was the first manufacturer to introduce foam tape production line in China and the first company to introduce acrylic tape production line in China. Produced the first acrylic tape and OCA optical adhesive with excellent performance in China. At present, some domestic tape manufacturers are also actively engaged in production, and vigorously purchase emerging equipment according to their own strength, and increase efforts to catch up with the developed countries in the field of tape.


Jin Litai


As early as August 2017, Jinlitai invested 260 million yuan to invest in Yitie Tiji to hold 20% of its shares. (In order to cut into the OCA optical adhesive field, Yi Tiji and the China Aviation Group acquired the OCA business unit of Hitachi Chemical.) . The main source of revenue for Yi Tiji is the processing and sales of OCA optical adhesives and fluorosilicon materials.


Fansett


Acquired OCA Optical Adhesives Division of Hitachi Chemical Co., Ltd. in 2016 to acquire OCA optical adhesive related process technology. The company's OCA products (FINESETTM) covers consumer areas such as smartphones, tablets, notebooks, and e-books. Customers include Tianma Microelectronics, Oufeiguang, and GIS Industry Group.


Jia Yun Optics


Jiayun Optics was established in 2000. It started the work of localization of optical materials a few years ago. It established a doctoral student workstation and built a highly educated and high-quality research and development team with independent intellectual property rights. Nanjing has invested in a coating plant with a 4000m2 R&D building, a 1600m2 enterprise engineering center and a 4000m2 1000-level clean room. There are two internationally advanced coating lines that have already produced OCA optical glue. The monthly production capacity reaches 400,000 square meters. According to Weng Wenquan, the third coating production line of Jiayun Optical will be put into production.


Silver touch


Established in June 2010, in 2011, the company cooperated with the ICP Research Institute of Seoul National University to research and develop OCA optical adhesive. In 2013, it successfully developed TP series OCA optical adhesive and TP series. In 2016, it successfully completed the full-fit series OCA. Development of optical adhesives.


Xinlun Technology


As early as 2012, we planned to implement the “Changzhou Industrial Park Project for Photonics and Electronic Components Functional Materials”, namely the Changzhou Phase I project. The main products include optical tape, high-purity protective film, high-purification tape, and heat-dissipating film.


Baoli


Founded in 2014, it is a national high-tech enterprise integrating research, development, production, sales and service. It has launched OCA optical adhesives widely used in mobile phones, lenses, tablets, touch screens, vehicles, wearables and other electronic components. , LOCA water gel, EMI electromagnetic shielding film, light-shielding film and other functional materials in the industry leading position. For domestic and foreign photovoltaic companies to provide new material solutions to help customers grow rapidly.


Huigu


Founded in 2008, Huigu Engineering, with its advanced precision coating technology and clean room management technology, can provide customers with high quality, high batch stability OCA products, including conventional fit and fully-fit OCA products. Huigu Engineering also invested in a comprehensive product application test platform to simulate the actual application of OCA products on the client side, aiming to find and solve product problems as early as possible, and reduce the probability of problems in the actual application.


Among the above-mentioned enterprises, Fuyin Group, Xinlun Technology, Baoli New Materials and Gaoren will bring OCA Optical Adhesive to Shenzhen International Film & Tape Exhibition!






For customers, compared to imported OCA optical adhesives, OCA's localization can not only bring cost advantages, but also the supplier's cooperation and reaction speed can be guaranteed, thus solving the customer's concern for after-sales products. Services, lead times and product improvements have also indirectly improved the market competitiveness of customers.


Combined with the future development trend, the market demand for OCA optical adhesives will continue to grow steadily, and the localization of OCA optical adhesives is also the trend of the times.






Encyclopedia expansion
OCA optical adhesive and SCA optical adhesive
OCA (OpticalClearAdhhesive) optical adhesive
It is a special adhesive for bonding transparent optical components (such as lenses) or protective films. It is required to have colorless transparency, light transmittance of over 90%, good bonding strength, curing at room temperature or medium temperature, and low curing shrinkage. It is a layer of special double-sided adhesive with optical transparency.


New OCA Optical Glue - SCA Optical Adhesive
SCA optical adhesive is a new type of OCA optical adhesive. It is a solid UV type optical adhesive. It is a special glue for the new generation of touch screen. It has superior light transmittance, clarity and adhesion. It is resistant to moisture, heat and weather, and has excellent shock and explosion resistance. The overall safety, reliability, durability and aesthetics of the touch screen are greatly improved, and the stability and long-term use of the touch screen are effectively maintained. The SCA optical glue changes the traditional bonding method of the touch screen.


More OCA optical adhesive problems, please poke ☟:
How to solve 11 common problems of OCA optical glue?
Focus | Analysis of the soft film and hard film process in coating technology; the road to localized equipment for high-end OCA, protective film and release film






The environmental protection of traditional adhesives has become a major obstacle to the development of the adhesive industry. The prospect of developing OCA optical adhesives and its development trend has been affirmed by the whole market. According to the supply and demand situation of China's OCA optical adhesive market, the future development direction of products is mainly environmentally friendly OCA optical adhesives, high performance and high value-added products. Will be in a long-term dominant position.
On November 21-23, 2019, there will be a gluing industry event in Shenzhen Convention and Exhibition Center - Shenzhen International Film and Tape Exhibition (referred to as: FILM & TAPE EXPO). The upstream and downstream enterprises in the adhesive industry are invited to join hands with FILM & TAPE EXPO to explore the future development trend of the adhesive industry.
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