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Research paper : Development of flexible-printable device processing technology (T. Kamata et al.)−182 Synthesiology - English edition Vol.1 No.3 (2009) (28)−became news throughout the world. In this technology, we communicated the message that in the future this technology will enable large-surface, ultra-thin, wall-type screen television, and appealed high reliability and ability to fabricate large surface area in addition to high performance.“Triaxial distributed pressure annealing method” was demonstrated by creating prototype all-printed RF-ID tag (Figure 7)[6]. It was shown that RF-ID tag could be formed on a film by printing only for the first time in the world. It contained message that in near future, flexible information terminal would become available, and we were able to appeal our goal of technological development.The above examples of technological developments are not fabrication methods of active layer (semiconductor layer) that generally draws more attention, but are formation technology of electrodes, wiring, and dielectric layer that are often left behind. There is another reason for presenting our development effort in these left-behind technologies, and that is to fill in the player gap. In certain technological concept, attractive elemental technology attracts many players of technological development, and certain degree of technological advance can be expected. However, in aforementioned elemental technologies, development does not take place, not due to technological hurdle, but due to other factors such as business. In this case, it is difficult to find set of technologies even if one wanted to. In some cases, technological concept cannot be “totally consistent.” Therefore, to appeal that the technological concept can be totally consistent, it is necessary to attempt filling the gap in technology. It is concept of technology for that “last piece” to completion. As researchers at national institution, we decided to play the role of showing that development concept can be provided in total set, to show leadership for the direction of technological development, and to reduce risk of development efforts by the industry.We shall give specific example of practical application of this effort. As side-development of printable device technology (top & bottom contact transistor technology), we developed 3-dimensional nanoporous device (Figure 8)[7]. This is device technology designed to effectively utilize wall fabrication that is one of the characteristics of liquid phase process, and we created a device (agricultural sensor) that enables highly sensitive measurement of substance that passes through or are incorporated into the pore of the porous material. This was technology developed as result of request from end users (farmers). The request was to develop highly sensitive agricultural sensor that can be used easily by farmers, for product control of produce. Considering the set of technologies, materials were available, fabrication process could be done readily with current technology, system developers existed, and of course, there were users. Only factor nonexistent was device developer. Here, there was “gap in technological.” In this case, there were no technicians who would work on this technology since it was not profitable. Therefore, as researchers of public institution, we decided to engage in “division of role for risk sharing” where we would actively take up elemental technology with high risk of development. As result, we created terminal device that was provided through set of technologies (Figure 9)[6]. This was effective in delivering strong message for prosumer electronics. Forms and specifications of the attached sensor had to be changed according to the type of produce. Also, places where sensors could be attached were different. Moreover, the sensor must not interfere with the produce. We launched this product with message that the information terminal device that can meet various and specific needs can be developed jointly with actual user (agricultural experiment station).Fig. 6 Development of organic TFT driven color LC display.Fig. 7 Development of all-printed flexible RF-ID tag.Fig. 8 Development of 3-dimensional nanoporous device for flexible sensor.APassage of water moleculesOrganic semiconductorInterior layerHydrocarbon chainExterior layerTreatment of curved surface and wallCharacteristic of manufacture technology for printed deviceDielectric material (semiconductor)ElectrodePorous resistorElectrode

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