Anisotropic conductive films (ACF) are a lead free, environmental friendly epoxy adhesive system used to make electric connection between flexible circuits or ICs on a multiple range of substrates. ACF is designed with insulation between adjacent circuits and strong adhesion to the substrates. As ACF method is highly productive, cost effective and is capable of fine pitch compact design as compared to the traditional interconnection solutions, its demand in the market may fuel. The conductive particles for ACF are made from RoHS compliance, an environmental friendly material, therefore, growing its customer base prominently.
Application of ACF in Glass Bonding Process
Utilisation of ACF in a chip on glass bonding process as an adhesion layer between the driver chip and the LCD panel may improve the bonding performance. The chip on glass bond process is a method of effective packaging which is capable of thin, low cost, and light display panels in Liquid crystal display (LCD) industry. In chip on glass bonding process, drivers ICs are bonded with glass substrate with high resolution, light weight, thin profile, and low power consumption. With the help of ACF curing in glass bonding process, conductive particles trapped between the mating bumps of IC and substrate provides electrical conductivity, also it protects the metallic contacts from mechanical damage providing stable adhesion. All these benefits of ACF in chip on glass bonding process may boost the sales of ACF in the sector.
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ACF Bonding Process in Laser based Bonding
New developments in laser and display technologies involve ACF bonding processes applied to much smaller area. It can even be applied to an incredible narrow frame of a display. Due to the good absorption of ACF for wavelengths (between 800 and 1000nm), it can be utilised in real world applications. ACF determines the bonding strength between TCP and indium tin oxide (ITO) playing a vital role in the bonding process. Due to the unique non heating capabilities of laser based anisotropic conductive film material, its curing process is capable of reducing the processing time of traditional contact heat press methods. Also, it is suitable for large size displays with a small bonding pitch, therefore, introducing it as an attractive solution in the market.
Requirement of ACF in Post-Infraction Myocardial Function
A research article published recently on doi.org for an experiment developed anisotropic conductivity and investigated as cardiac patches for their potential in improving the post MI myocardial function of rat models. The results demonstrated that anisotropic conductive patches exhibits the therapeutic effect in repairing the infracted myocardium compared to the non-conductive silk and isotropic conductive patches. The study shows that anisotropic conductive biomaterials can be an effective option for repair of infracted myocardium. Therefore, not much but use of ACF can happen in healthcare sector too and thus, may fuel its adoption.
Competitive Landscape
Key players in the ACF sector include Hitachi Chemicals, Three Bond, 3M, Kyocer, Pixel Interconnect, PVA TePla America, DELO Adhesives, Dexerials Corporation, Btechcorp, Loctite, SunRay Scientific, Amada Miyachi America, Creative Materials Corporation, Showa Denko Materials, 3T Frontiers, Duksan Hi-Metal Co., U-PAK, H&S HighTech, Guangzhou Weicai, Shenzan Olian Automatic Equipment, etc.
3M in 2020 introduced an anisotropic conductive film adhesive 7303, an epoxy blend adhesive system filled with 43 micron silver coated glass beads. It is conductive and operates at 80 degree Celsius as its maximum operating temperature. It helps in heat cure, provides good thermal stability, and reworkable. ACF 7303 may be used to bond a flexible printed circuit to another flexible printed circuit board. The unbonded adhesive film is slightly tacky at room temperature consisting of thermosetting epoxy/acrylate adhesive matrix and randomly loaded with conductive particles.
In 2020, Dexerials have introduced anisotropic conductive films for smart cards which can be optimised for the embedding of functional modules such as dual interfaces and finger print sensors in contact/contact less smart cards. EH1038-40 performs mounting modules by adhesion and forming electrical conduction simultaneously with low heat resistance such as PVC, PC and PET-G. With the help of ACFs as module embedding materials, number of processes is reduced and production efficiency is also increased. The model has a dual face interface and finger print sensor module.
Creative Materials Corporation in March this year has introduced a series of isotropic and anisotropic B-stage electrically conductive adhesive films. These adhesives films have controlled reflow and high reliability. These products are available in sheets and as custom performs to customer specified geometries. These products offer high thermal stability and also have high temperature properties to 325 degree Celsius, excellent electrical conductivity, offer chemical resistance. Other than that, it provides minimal flow during bonding and curing and low CTE.
Regional Outlook
There may be many factors for growth of anisotropic conductive films market such as impact of growing electrical vehicles, rise in demand for 5G wireless, improvements in miniaturisation of electronic components, laser displays, utilisation in smart phones, etc.
North America is anticipated to be the highest growing market during the forecast period 2021-2031. Growing demand in health care as the need for increase in medical equipments such as display and monitoring devices where ACFs are needed may be a contributing factor towards the market growth. The region is packed with number of companies helping in research and development of new technologies. Furthermore, increasing demand and adoption of electric vehicles in the region with the encouraging government initiatives and easily accessible charging stations is likely to help the ACF as an application. In 2021, if things remain normal, American EV industry is confident to reach heights. All these factors as applications of ACF may help in growing the sales.
The sector contributing towards the growth of anisotropic conductive films in Europe is automobile sector. Multinational automobile companies like BMW, Volkswagen, Renault, etc., are heavily investing in light weight, automatic and high speed automobiles. Germany being the highest manufacturer of passenger cars accounted for almost 5 million passenger cars in 2019. As European automobile sector have suffered more severe impact in 2020, if the conditions of covid-19 crisis become normal, the region is likely to surge higher.
Asia Pacific is expected to grow anisotropic conductive films market significantly. As South Asia is focussing on growth in digitalisation, the demand for anisotropic conductive films remains certain in the region. According to Oxford Economics, vehicle production in China is expected to grow more than 10% in 2021 helping in utilisation for electronic components. Two top companies Dexerials Corporation and Denko Materials in Japan fulfils 70% of global anisotropic conductive film demand. Other well established electronic manufacturing companies is catered to ask for the requirement of anisotropic conductive films in East Asian region.
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Segmentation
Based on Adhesive Type
- Epoxy
- Acrylic
Based on Assembly Conditions
- Flex on glass
- Chip on flex
- Chip on glass
Based on End user Industry
- Aerospace
- Electrical
- Electronics
- Automobile
- Health care
Based on Region
- North America
- Europe
- Asia Pacific
- Middle East and Africa
Key Questions Answered
- Which countries are anticipated to surge the demand of anisotropic conductive films?Japan, Germany, and US.
- Who are the leading players in ACF market?Kyocer, Pixel Interconnect, PVA TePla America, DELO Adhesives, Dexerials Corporation, Btechcorp, Loctite, SunRay Scientific, Amada Miyachi America, Creative Materials Corporation, etc.
- What are the adhesive types of anisotropic conductive films?Epoxy and acrylic.
- What are the key trends driving the market growth?Driving smart phone utilisation, growing 5G technologies, electronics sector, adoption of electric vehicles, etc.
- Specify the end user applications of anisotropic conductive films?Health care, electronics, electrical sector, aerospace and automobiles.
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