TY - JOUR
T1 - A fully roll-to-roll gravure-printed carbon nanotube-based active matrix for multi-touch sensors
AU - Lee, Wookyu
AU - Koo, Hyunmo
AU - Sun, Junfeng
AU - Noh, Jinsoo
AU - Kwon, Kye Si
AU - Yeom, Chiseon
AU - Choi, Younchang
AU - Javey, Ali
AU - Cho, Gyoujin
N1 - Funding Information: The authors would like to thank the Ministry of Education in Korea for its financial support through the Basic Science Research Program in Sunchon National University (NRF-2014R1A6A1030419) and the Global Leading Technology Program of the Office of Strategic R&D Planning (OSP), funded by the Ministry of Commerce, Industry and Energy, Republic of Korea (10042537, Printed Electronics Total Solution Development). G. C would like also to thank RIC for their support with the instruments for ink formulation, printing, and the characterization of printed TFTs. A. J would like to thank NSF NASCENT.
PY - 2015/12/4
Y1 - 2015/12/4
N2 - Roll-to-roll (R2R) printing has been pursued as a commercially viable high-throughput technology to manufacture flexible, disposable, and inexpensive printed electronic devices. However, in recent years, pessimism has prevailed because of the barriers faced when attempting to fabricate and integrate thin film transistors (TFTs) using an R2R printing method. In this paper, we report 20 × 20 active matrices (AMs) based on single-walled carbon nanotubes (SWCNTs) with a resolution of 9.3 points per inch (ppi) resolution, obtained using a fully R2R gravure printing process. By using SWCNTs as the semiconducting layer and poly(ethylene terephthalate) (PET) as the substrate, we have obtained a device yield above 98%, and extracted the key scalability factors required for a feasible R2R gravure manufacturing process. Multi-touch sensor arrays were achieved by laminating a pressure sensitive rubber onto the SWCNT-TFT AM. This R2R gravure printing system overcomes the barriers associated with the registration accuracy of printing each layer and the variation of the threshold voltage (V th). By overcoming these barriers, the R2R gravure printing method can be viable as an advanced manufacturing technology, thus enabling the high-throughput production of flexible, disposable, and human-interactive cutting-edge electronic devices based on SWCNT-TFT AMs.
AB - Roll-to-roll (R2R) printing has been pursued as a commercially viable high-throughput technology to manufacture flexible, disposable, and inexpensive printed electronic devices. However, in recent years, pessimism has prevailed because of the barriers faced when attempting to fabricate and integrate thin film transistors (TFTs) using an R2R printing method. In this paper, we report 20 × 20 active matrices (AMs) based on single-walled carbon nanotubes (SWCNTs) with a resolution of 9.3 points per inch (ppi) resolution, obtained using a fully R2R gravure printing process. By using SWCNTs as the semiconducting layer and poly(ethylene terephthalate) (PET) as the substrate, we have obtained a device yield above 98%, and extracted the key scalability factors required for a feasible R2R gravure manufacturing process. Multi-touch sensor arrays were achieved by laminating a pressure sensitive rubber onto the SWCNT-TFT AM. This R2R gravure printing system overcomes the barriers associated with the registration accuracy of printing each layer and the variation of the threshold voltage (V th). By overcoming these barriers, the R2R gravure printing method can be viable as an advanced manufacturing technology, thus enabling the high-throughput production of flexible, disposable, and human-interactive cutting-edge electronic devices based on SWCNT-TFT AMs.
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U2 - https://doi.org/10.1038/srep17707
DO - https://doi.org/10.1038/srep17707
M3 - Article
C2 - 26635237
SN - 2045-2322
VL - 5
JO - Scientific reports
JF - Scientific reports
M1 - 17707
ER -