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2669549 
Journal Article 
A development and evaluation of micro-gravure coater for printed electronics 
Hwang, JK; Bae, S; Kim, DSoo 
2014 
Yes 
Japanese Journal of Applied Physics
ISSN: 0021-4922
EISSN: 1347-4065 
53 
5 
WOS:000338316400041 
The purpose of this paper is that evaluate of developed micro-gravure coater system and manufacture of thin film to be applied printed electronics, such as organic light emitting diodes (OLED), organics photovoltaic (OPV), organic thin film transistor (OTFT), etc. The micro-gravure coater has various modules such as web tension controller, micro-gravure coating unit, doctor blade, ink dispenser and hybrid dry units for NIR, hot air. Especially, this coating system is very suitable for mass or continuous process due to the applied for roll-to-roll (R2R) web moving method. So, this micro-gravure coating system have the advantage of higher processing time and lower manufacturing cost compare with conventional vacuum process. Also, this system is suitable for coated large area and controlled coating thickness compare with non-contact coating process, such as electrostatic spray deposition (ESD), aerosol-jet, etc. on the other hand, this system have disadvantage of substrate damage due to the contact with the substrate and micro-gravure patterned roll. However, from the view of productivity and cost, there are a lot more benefits than disadvantages. For this reason, we designed and manufactured the micro-gravure coating system based with R2R and we performed coating test with the various micro-gravure patterned roll and then through the various coating test, we ascertain whether or not developed the micro-gravure coating system for printed electronics. (C) 2014 The Japan Society of Applied Physics