Display Technology with Printing
This method is drawing attention as a low-cost processing technology with less environmental impact thanks to its advantages in material efficiency and low temperature process compared with conventional semiconductor processes that need etching on thinned functional materials.
Ricoh applied this technology to fabricating transistor circuits, which control every pixel of a display. Unique technologies such as surface energy control (dividing the surface of a film substrate into hydrophilic and hydrophobic domains, and applying ink on hydrophilic domain), ink formula and ink-jetting control, enabled the microscopic transistor structures to be built up on plastic films. The thin lightweight high-resolution display was achieved using the above technologies.
Moreover, the application of printable electronics is not limited in displays. It surely has potential for applications such as sensors and memories. In particular, R&D aiming at applying this technology to RFID tags is active in Europe and other regions.
Ricoh's technology is expected to contribute to the continuing progress of printable electronics.
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