Just this year, the global greed preference for touch-type products triggered a sharp rise in the touch screen market. With the wider application of mobile products and the invention of new “essential†products, it is difficult to predict that this growth trend will be eased or continued to grow. But whether slowing or rising, touch technology has become a permanent member of the flat panel display family.
I am often amazed at the development of the touch screen market over the past few years. Three years ago, I was privileged to be the head of the coiled coating (roll-to-roll vacuum coating equipment) division of Applied Materials in Germany. We spent a lot of time on flexible electronics to find opportunities for various applications such as flexible solar panels, displays, printed circuit boards, and several applications based on transparent conductive films, including touch screen devices. Ironically, although our team has been dedicated to this market for many years, and since the early 1980s, it has begun to sell roll-to-roll ITO sputter coating equipment, but due to the market of resistive touch technology There is limited room for growth and the scale is relatively small and has always been tepid.
Until the multi-touch technology is applied to products such as mobile phones and tablet computers, the touch screen market has only changed slowly and stably. The application of projected capacitive touch technology has brought about a new wave of manufacturing capacity increase due to its superior multi-touch performance. Initially, the industry's manufacturers of color film process lines have converted product lines and used existing devices to produce touch screen products; after that, we can use SmartWeb roll-to-roll coating equipment for flexible substrate resistive touch screens and projected capacitive touch screens. The market demand has increased dramatically. In the past two years, the performance of our NewAristo and AKTAristoTwin coating equipment tailored for the production of touch screen devices has reached a record high, reflecting the strong growth in market demand for film-based substrate and glass substrate touch screen products.
In 2010, I started as the general manager of the PVD Products Division of Applied Materials' Display Business Group, and continued to ride in the field of touch technology, but also adopted another approach, namely touch-screen technology based on glass substrates. From the application level of touch technology, the processes of the two devices are similar, and the mechanical design of the two devices is extremely different. The similarity lies in that both adopt the most advanced ITO coating technology and adopt the combination of additional films (such as SiO2, metal, etc.) to improve the ITO characteristics. They are suitable for the production of projected capacitive touch screens, and are ultimately used in mobile phones and tablet computers. product. However, the substrate handling equipments of the two devices are very different (one is single glass handling, the other is roll-to-roll flexible substrate handling), and the optimization of the optical properties of the thin film and the application direction of each have their own implementation. For example, a touch panel device of a flexible plastic substrate is thinner, lighter, and more impact resistant, while a touch panel device of a glass substrate has better light transmittance and stronger scratch resistance. Of course, both methods are aggressive and continue to strengthen the improvement of the short board, the glass substrate becomes thinner and lighter, the flexible substrate becomes more transparent, and the surface hardness is continuously enhanced through the surface coating method.
Although there are differences between the two touch products of the flexible substrate and the glass substrate, both methods jointly advance the industrial technological innovation in the integration of multi-layer functional thin film processes. The production of projected capacitive touch screens requires patterned lines for transparent conductive films such as ITO. Although the touch screen graphics process is relatively simple compared to the graphics process of semiconductors or liquid crystal displays, they can be distinguished by human eyes (but there is no need for extreme graphics processes and equipment for display quality). In order to solve the problem of visible lines, by overlaying the film, the overall performance of the optical characteristics of the touch screen device is maintained, and the line pattern can be visually hidden. More preferably, the above superposed film layer has the characteristics of an anti-reflection film, so that the visual experience of the display device becomes better. Another advantage of using PVD (Sputtering) coating equipment is that it is possible to use the same equipment to deposit ITO, SiO2 and/or metal layers, which will give end product manufacturers the opportunity to reduce the consumption of additional materials and subsequent process steps, such as coating or Wet coating process.
The future is full of possibilities. Various exciting new technologies will support the rapid development of the touch screen industry and continue to show a dynamic growth. It is a great privilege to be able to become an important part of the touch screen industry chain, and to fulfill people's desire to pursue visual enjoyment and human-computer interaction.
I am often amazed at the development of the touch screen market over the past few years. Three years ago, I was privileged to be the head of the coiled coating (roll-to-roll vacuum coating equipment) division of Applied Materials in Germany. We spent a lot of time on flexible electronics to find opportunities for various applications such as flexible solar panels, displays, printed circuit boards, and several applications based on transparent conductive films, including touch screen devices. Ironically, although our team has been dedicated to this market for many years, and since the early 1980s, it has begun to sell roll-to-roll ITO sputter coating equipment, but due to the market of resistive touch technology There is limited room for growth and the scale is relatively small and has always been tepid.
Until the multi-touch technology is applied to products such as mobile phones and tablet computers, the touch screen market has only changed slowly and stably. The application of projected capacitive touch technology has brought about a new wave of manufacturing capacity increase due to its superior multi-touch performance. Initially, the industry's manufacturers of color film process lines have converted product lines and used existing devices to produce touch screen products; after that, we can use SmartWeb roll-to-roll coating equipment for flexible substrate resistive touch screens and projected capacitive touch screens. The market demand has increased dramatically. In the past two years, the performance of our NewAristo and AKTAristoTwin coating equipment tailored for the production of touch screen devices has reached a record high, reflecting the strong growth in market demand for film-based substrate and glass substrate touch screen products.
In 2010, I started as the general manager of the PVD Products Division of Applied Materials' Display Business Group, and continued to ride in the field of touch technology, but also adopted another approach, namely touch-screen technology based on glass substrates. From the application level of touch technology, the processes of the two devices are similar, and the mechanical design of the two devices is extremely different. The similarity lies in that both adopt the most advanced ITO coating technology and adopt the combination of additional films (such as SiO2, metal, etc.) to improve the ITO characteristics. They are suitable for the production of projected capacitive touch screens, and are ultimately used in mobile phones and tablet computers. product. However, the substrate handling equipments of the two devices are very different (one is single glass handling, the other is roll-to-roll flexible substrate handling), and the optimization of the optical properties of the thin film and the application direction of each have their own implementation. For example, a touch panel device of a flexible plastic substrate is thinner, lighter, and more impact resistant, while a touch panel device of a glass substrate has better light transmittance and stronger scratch resistance. Of course, both methods are aggressive and continue to strengthen the improvement of the short board, the glass substrate becomes thinner and lighter, the flexible substrate becomes more transparent, and the surface hardness is continuously enhanced through the surface coating method.
Although there are differences between the two touch products of the flexible substrate and the glass substrate, both methods jointly advance the industrial technological innovation in the integration of multi-layer functional thin film processes. The production of projected capacitive touch screens requires patterned lines for transparent conductive films such as ITO. Although the touch screen graphics process is relatively simple compared to the graphics process of semiconductors or liquid crystal displays, they can be distinguished by human eyes (but there is no need for extreme graphics processes and equipment for display quality). In order to solve the problem of visible lines, by overlaying the film, the overall performance of the optical characteristics of the touch screen device is maintained, and the line pattern can be visually hidden. More preferably, the above superposed film layer has the characteristics of an anti-reflection film, so that the visual experience of the display device becomes better. Another advantage of using PVD (Sputtering) coating equipment is that it is possible to use the same equipment to deposit ITO, SiO2 and/or metal layers, which will give end product manufacturers the opportunity to reduce the consumption of additional materials and subsequent process steps, such as coating or Wet coating process.
The future is full of possibilities. Various exciting new technologies will support the rapid development of the touch screen industry and continue to show a dynamic growth. It is a great privilege to be able to become an important part of the touch screen industry chain, and to fulfill people's desire to pursue visual enjoyment and human-computer interaction.
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