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http://dx.doi.org/10.7464/ksct.2016.22.4.232

A Study on Micro-Electrode Pattern of Repair Process Using Electrohydrodynamic Printing System  

Yang, Young-Jin (Department of Mechatronics Engineering, Jeju National University)
Kim, Soo-Wan (Department of Mechatronics Engineering, Jeju National University)
Kim, Hyun-Bum (Department of Mechatronics Engineering, Jeju National University)
Yang, Hyung-Chan (Korea Leading Energy Management)
Lim, Jong-Hwan (Department of Mechatronics Engineering, Jeju National University)
Choi, Kyung-Hyun (Department of Mechatronics Engineering, Jeju National University)
Publication Information
Clean Technology / v.22, no.4, 2016 , pp. 232-240 More about this Journal
Abstract
Recently, various research studies have been conducted and many are in progress for the suitable alternative materials for ITO based touch screen panel (TSP) due to limitations in size and flexibility. Various researches from all over the world have been attempted to fabricate the fine electrode less than $5{\mu}m$ for the rapid developing of display technology. Research is also being carried out in metal mesh methods using the existing technologies and alternative materials at commercial level. However, by using the existing technologies certain discrepancies are observed like low transparency and low yield which also results in the distortion of patterns. For repairing the damaged pattern, the conventional laser CVD technique has also been used but there are some challenges observed in CVD technique like achieving a stable fine electrode of $10{\mu}m$ or less and avoiding the formation of satellite drops. To overcome these issues, a new printing process named Electrohydrodynamic (EHD) printing, has been introduced by which $5{\mu}m$ fine patterns can be printed in one step. This EHDA printing technique has been applied to print very fine electrodes of $5{\mu}m$ or less by using conductive inks of various viscosities. This study also presents the optimized process parameters for printing $5{\mu}m$ fine electrode patterns during experiments by controlling the applied voltage and supply flow rate. The $5{\mu}m$ repair electrodes were fabricated for repairing $50{\mu}m$ shorted electrode samples.
Keywords
Electrohydrodynamic; Pattern repair; Micro-Electrode; Metal mesh;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Cho, N. S., "Current Status of OLED Technology and Market," Polym. Sci. Technol., 24, 130-134 (2013).
2 Kim, Y. Y., "Major Domestic and Foreign Companies Displaying Trends," Korea Display Ind. Assoc., 28, 32-36 (2013).
3 Cheong, W. S., Hong, C. H., and Shin, J. H., "Technological and Industrial Trends on Touch Sensor," Electronics and Telecommunications Trends, 29, 32-42 (2014).
4 Kim, K. R., "Laser Microfabrications for Next-Generation Flat Panel Display," Korean J. Mater. Res., 17, 352-357 (2007).   DOI
5 Lee, D. Y., Shin, Y. S., Park, S. E., Yu, T. U., and Hwang, J. H., "Electrohydrodynamic Printing of Silver Nanoparticles by Using a Focused Nanocolloid Jet," Appl. Phys. Lett., 19, 90-92 (2007).
6 Hakiai, K., Ishida, Y., Matsuzaki, K., Baba, A., and Asano, T., "Electrostatic Droplet Ejection Using Planar Needle Inkjet Head," Japanese J. Appl. Phys., 44, 82-86 (2005).   DOI
7 Joffre, C., Prunet Foch, B., Berthomme, S., and Cloupeau, M., "Deformation of Liquid Meniscus Under the Action of an Electric Field," J. Electrostatics, 64, 43-44 (1982).
8 Choi, J., Lee, S., Kim, Y. J., Son, S. U., and An, K. C., "High Aspect Ratio EHD Printing with High Viscosity Ink Ejection," Nanotech., 2, 267-270, (2012).
9 Yang, Y. J., Ko, J. B., Dang, H. Y., Kim, H. C., Choi, K. H., and Choi, K. H., "Development of Pneumatic Ink Supply System for Electrostatic Head on Meniscus Control," J. Korean Soc. Precision Eng., 29, 455-460 (2012).   DOI
10 Lee, S. H., Byun, D. Y., Han, S. J., Son, S. U., Kim, Y. J., and Ko, H. S., "Electrostatic Droplet Formation and Ejection of Colloid," Int. Symp. Micro-NanoMechatronics Hum. Sci., Nagoya, 249-254 (2004).
11 Joffre, C., Prunet Foch, B., Berthomme, S., and Cloupeau, M., "Deformation of Liquid Meniscus Under the Action of an Electric Field," J. Electrostatics, 64, 43-44 (1982).
12 Hue, P. L., "Progress and Trends in Ink-jet Printing Technology," J. Imaging Sci. Technol., 30, 49-62 (1998).
13 Eggers, J., and Dupont, T. F., "Drop Formation in a One-Dimensional Approximation of the Navier-Stokes Equation," J. Fluid Mechanics, 262, 205-221 (1994).   DOI