Organic semiconductor material technology
High mobility organic semiconductor ink for printed CMOS circuit
High mobility and air stable n- and p- type organic semiconductor inks have been successfully developed. Logic circuits consisting of complimentary excellent switching characteristics. These ink can contribute greatly to fully-printed organic circuits low power consumption and high integration levels.
Metal nanoparticle ink technology
High performance silver nano particle ink for high resolution printing
A newly developed silver nanoparticle ink with high conductivity, low sintering temperature and stable dispersion has been employed using high resolution ink-jet printing. Ink-jet printed silver nanoparticle electrodes with 22μm widths low resistivities below 10μΩ･cm at 120℃. Compatible performance could be demonstrated on glossy paper.
High performance organic TFT technology
Printed sub-micron electrodes and their application to transistor
Various printing methods have been established for each layer in TFT device fabrication. Reverse-offset printing enables the patterning of sub-micron scale electrodes that we feel will provide for large-area printed circuits eith high levels of integration and fast operating frequencies on flexible substrates.
Integration technology for organic TFT circuit
Large-area, fully printed organic integrated circuits fabricated on ultra-thin films
We have successfully fabricated fully printed organic thin-film transistor (P-OTFT) devices and circuits on 1-μm-thick film substrates. The devices exhibited excellent mechanical stability. The large-area fablication of P-OTFT devices further illustrates the potential to these devices in novel electronic applications, such as large-area biosensors.
Organic FET sensor technology
Organic FET-based biosensors toward healthy lives
Organic field effect transistor (OTFT) devices can be applied to wearable sensors for measuring mental stress, the early detection of diseases, and monitoring food freshness. We believe that OFETs will widen the avenues for the potential development of future sensor devices in healthcare applicaions.
Core Technologies for Flexible Display
Flexible OLED displays are composed of finely patterned organic TFT (OTFT) backplane and OLED devices on thin plastic film substrates. We must ensure not only the performance of the individual transistors, but also develop the pixel device from the plastic base film to OLED device formation. It is difficult to create an active matrix backplane comprised of an array of many OTFT devices.
Development of the following core technologies is being carried out in order to realize flexible OLED displays.
1. High performance plastic films (dimension stability, gas barrier properties)
2. Plastic film handling methods
3. Improvements in OTFT performance
4. Technology for high density and integration level
5. Technology for high reliability
6. Coating process technology
3D Printed Electronics
Three-dimensional printing on curved surfaces
Using conventional (2D) printing technologies, we have succeeded in printing electronic circuits on three-dimensional (3D) curved surfaces, can provide space-savings and increased product design freedom of manufacturability.
High resolution printing
Process development for Roll to Roll High resolution printing
We are developing high resolution printing method and fabrication process of organic TFT for roll to roll fabrication process. In roll to roll process, the offset technology of position gap caused by film deformation and high speed sintering process using Xe flash lamp are very important.