Online noncontact thickness measurement of printed conductive silver patterns in Roll-to-Roll gravure printing

被引：0
作者：
Jinwoo Seong
Songjun Kim
Janghoon Park
Dongjin Lee
Kee-Hyun Shin
机构：
[1] Konkuk University,Department of Mechanical Design and Production Engineering
[2] Konkuk University,School of Mechanical Engineering
[3] Konkuk University,Flexible Display Roll
来源：
International Journal of Precision Engineering and Manufacturing | 2015年 / 16卷
关键词：
Online; Thickness measurement; Roll-to-Roll; Gravure printing; Printed electronics;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The paper presents the first online thickness measurement of printed conductive silver patterns during the roll-to-roll (R2R) printing process. The thickness measurement apparatus is equipped with capacitive and eddy current sensors on a precision stage and was installed on an industrial-scale R2R printing machine. The difference in the proximal distance from the sensors to the solid surfaces of the pattern, web (PET film), and idle roller yielded the thickness information. In order to compensate for the error caused by the imperfect geometric shape of the idle roller, which amounted to ±9.4 µm, the fluctuation in the output signal from the eddy current sensors was subtracted. As a result, the thickness of the printed conductive patterns was successfully measured and compared with the offline value for evaluation. The online values showed close agreement with the offline values. Thus, the apparatus is useful for monitoring the thickness online. The printing parameters can be adaptively controlled to realize better-quality printed electronics products based on the proposed online measurement scheme.
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页码：2265 / 2270
页数：5
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