2017 年 56 巻 6 号 p. 611-616
Printed electronics is technology for manufacturing electronic circuits, sensors and elements by applying coating and printing technology. Typical devices of printed electronics are biosensors, RFID tags, Organic EL lighting, Flexible displays, and so on. In the USA, a social structure called “Trillion Sensors Universe “ is advocated and a so-called “flexible device” is in high demand. These are multiple layered electronics devices on flexible substrates. But the distortion characteristic of flexible substrates such as film makes it difficult to form layered circuits by photolithography or other mask-based methods. Toray Engineering have developed a technology that uses inkjet technology to form layered circuit pattern corresponding to the TFT array on flexible film.