Development of inkjet printing for high-performance organic semiconductor devices
super-fine inkjet droplets of 1/10 the size and 1/1000 the volume!
Under the leadership of SIJ Technology , Inc ., a venture business engaged in research and development of super-fine inkjet technology based on research results from the National Institute of Advanced Industrial Science and Technology , Professor Junichi TAKEYA and Associate Professor Toshihiro OKAMOTO of the Institute of Scientific and Industrial Research, Osaka University, a group of researchers have succeeded developing a super inkjet (SIJ) printer whose fine patterns are less than 1/10th the size of conventional inkjet patterns by precisely controlling the droplet volume ejected from the inkjet nozzle onto the circuit board.
S izes and orientation of organic semiconductor single crystals can be adjusted by controlling the ink ejection method and direction enabling and enhancing the production of high-quality organic ultra-fine thin-film transistors. Furthermore, as it is possible to place only the amount of ink needed where it is needed with the SIJ printer, the use of expensive organic semiconductor can be significantly reduced, contributing to energy saving and cost reduction. Moreover, as the films made available by this technology are ultra thin and fine, it is thought that even if they are formed on flexible substrate surfaces, they will not break easily and will show high compatibility.
This group continues to research materials and make efforts to optimize printing conditions, applying this technology to large organic semiconductor arrays.
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