Journal
CURRENT APPLIED PHYSICS
Volume 15, Issue 3, Pages 367-376Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cap.2015.01.007
Keywords
Printed electronics; Ag flake; Polyimide; Roll-to-roll gravure printing; Mass production
Funding
- KU Brain Pool of Konkuk University
- Global Leading Technology Program of the Office of Strategic R&D Planning (OSP) [10042421]
- Ministry of Knowledge Economy of Korea
- Ministry of Science, ICT & Future Planning (MSIP) [2010-00525]
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This study introduces mass-producible roll-to-roll (R2R) gravure printed patterns with good printability and functionality. Ag flake materials and polyimide (PI) film substrates were used in this experiment. To confirm mass production potential, a large-scale R2R gravure machine was used, and lengthy printing times were used in the process (6.5 h). It was attempted to print a 30- to 120-mm fine-line pattern (groove type) and a 200- to 1000-mm-wide (dot type) nominal pattern. Various printed width and thickness values were obtained using many measurement sets to confirm the repeatability of each pattern for lengthy process times. We obtained a 45- to 1000-mm pattern width and a 1- to 5-mm thickness. Moreover, resistivity of the printed pattern was also achieved in the range of 5.4-18 mu Omega cm. A peel-off test was performed using a standardized method. Finally, this paper presents the achieved optimized process condition and the results of this study. (C) 2015 Elsevier B.V. All rights reserved.
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