Roll-to-roll (R2R) ultra-fine line printing technology will set off a new revolution in the touch panel industry. ITRI ​​and Komori, a Japanese printing equipment manufacturer, jointly released roll-to-roll ultra-fine line printing technology and equipment on the 27th, which can assist touch panel manufacturers with fine-line printing technology less than 20 microns (m) ) Developed ultra-narrow bezel thin touch modules and flexible touch panels, and replaced today's costly yellow photolithography process.
On the left is Liu Junting, director of the Institute of Electronics and Optoelectronics, ITRI, and on the right is Komori ’s new wife.
Liu Junting, director of the Institute of Electronics and Optoelectronics of the Industrial Technology Research Institute, said that at present, all kinds of narrow frame products on the market, the width of the frame depends on the line width and line spacing of the conductor, and the line width of the general screen printing technology is about 60 ~ 80 microns, gravure printing technology is 30-50 microns, the most common yellow photoetching process is 30 microns, but these technologies have gradually failed to meet the new generation of ultra-narrow border and flexible design of touch panel manufacturers Demand, so the industry urgently needs new conductive film printing equipment and technology to overcome this technical bottleneck.
In view of this, ITRI and Komori jointly developed roll-to-roll ultra-fine line printing equipment and technology, which will allow the wire width of the wire to be less than 20 microns to achieve an ultra-narrow frame design, and through roll-to-roll printing equipment, The panel factory can successfully print conductive films on flexible circuit boards, solar panels and displays, and then successfully expand the flexible touch application market and create a new blue ocean market for the touch panel industry.
In fact, at present, most touch panel manufacturers still use the yellow light etching process to make touch panels. Not only the process steps are complicated, but the set of yellow light etching equipment is about NTD billions. The innovative design of the Institute of Industrial Technology and Komori Roll-to-roll ultra-fine line printing equipment and technology, which can be used for direct printing (Direct PrinTIng) on ​​ultra-thin substrates. Only one roll-to-roll printing equipment can replace the current yellow light etching process. Various equipment such as patterned sputtering, coating, development, printing and etching greatly reduce the equipment investment cost of the touch panel factory.
In addition, the roll-to-roll ultra-fine line printing technology is also more sophisticated than the yellow photolithography process in terms of material usage. Liu Junting added that the current yellow light etching process equipment has a material usage rate of about 5%, which means that most of the conductive film will be wasted; in contrast, if roll-to-roll printing equipment is used, the printing characteristics of this technology will benefit , The touch panel factory can increase the material utilization rate to 95%, thereby reducing the cost of material expenditure.
According to the statistics of the Institute of Industrial Technology and Research, the global touch panel output value reached NT $ 494 billion in 2012. Compared with 2011, its annual growth rate in market output value was 48%, showing that the global touch industry is still growing. Strong; Among them, Taiwan's touch panel output value ranks first in the world, and its market share also exceeds 50%. If this new technology can be introduced as soon as possible, it will further consolidate the market leading position.
Komori ’s new wife, Deputy Chief Executive Officer, said that although the roll-to-roll ultra-fine line printing equipment production base is located in Japan, Taiwan ’s touch panel shipments rank first in the world, so it will become the main focus of Komori ’s market, and it will not be ruled out in the future. Expanded the equipment production line to Taiwan to provide technical support to Taiwan's touch panel factory nearby.
Liu Junting revealed that the Institute of Industrial Technology is currently applying for a roll-to-roll printing technology patent, and many patent barriers have been laid down. Even if foreign touch panel manufacturers purchase Komori roll-to-roll printing equipment, they still need to obtain IP authorization and technical support from the Institute of Technology There is a way to successfully produce the next-generation touch panel based on this technology.
It is reported that many Taiwanese touch panel manufacturers are very interested in roll-to-roll printing technology, and have planned to introduce related equipment into the new production line. The Institute of Industrial Technology also estimates the use of this technology for touch panel products The official shipment is expected to begin at the end of next year as soon as possible, and to encourage the market scale of ultra-narrow bezel touch panels and flexible touch applications to expand.
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