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http://dx.doi.org/10.7736/KSPE.2013.30.6.578

A Study on Processing of Auxiliary Electrodes for OLED Lighting Devices Using a Reverse Gravure-Offset or Gravure-Offset Printing  

Bae, Sung Woo (Department of Energy and Materials Engineering, Dongguk Univ.)
Kwak, Sun Woo (Department of Printed Electronics, Korea Institute of Machinery & Materials, KIMM)
Kim, In Young (Department of Printed Electronics, Korea Institute of Machinery & Materials, KIMM)
Noh, Yong-Young (Department of Energy and Materials Engineering, Dongguk Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.30, no.6, 2013 , pp. 578-583 More about this Journal
Abstract
The lighting devices using organic light emitting diodes (OLEDs) are actively researched because of the various advantages such as high power efficiency and 2-dimensitonal lighting emitting. To commercialize those OLED lighting devices, the manufacturing cost must be downed to comparable price with conventional light sources. Here, we demonstrate a reverse gravure-offset or gravure off-set printed metal electrode for the auxiliary electrode for OLED lighting devices. For the fabricated OLED's auxiliary electrode, we used Ag nano-paste and printed metal grid structure with a line width and spacing of several ten and hundred micrometer by using gravure-offset printing. In the end the printing metal grid pattern are successfully achieved by optimization of various experimental conditions such as printing pressure, printing speed and printing delay time.
Keywords
Reverse gravure-offset printing; Gravure-offset printing; OLED; Auxiliary electrode; Ag nano paste;
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