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http://dx.doi.org/10.5391/JKIIS.2015.25.3.260

Alignment System for Display Panel using Edge Feature  

Lee, HoHun (Department of Control and Robotics Engineering, Chungbuk University)
Lee, DaeJong (Department of Control and Robotics Engineering, Chungbuk University)
Chun, MyungGeun (Department of Control and Robotics Engineering, Chungbuk University)
Publication Information
Journal of the Korean Institute of Intelligent Systems / v.25, no.3, 2015 , pp. 260-265 More about this Journal
Abstract
This paper proposes a alignment system using edge feature. An alignment system obtains the position and orientation of printed circuit board(PCB) or liquid crystal display(LCD) panel through the fiducial marks. Thus, it is the indicator of the system performance how accurate we detect the positions of the fiducial marks in the target image. Edges have the geometrical characteristics such as positions, lengths, and shapes. These features are suitable for finding the marks and have the advantages of lighting variations, model occlusion, as well as variations in scale and angle. The performance of the proposed system is validated through the alignment experiment using an display panel alignment system included X, Y axis, and rotatable stage.
Keywords
Fiducial mark; Edge feature; Alignment system; Align;
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