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http://dx.doi.org/10.5762/KAIS.2020.21.6.640

Development of Inspection System for Transparent Pattern of the Electromagnetic Resonance Pen  

Ryu, Young Kee (Department of Information and Communication Engineering, Sunmoon University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.6, 2020 , pp. 640-645 More about this Journal
Abstract
To produce an input device stably using the transparent electromagnetic pattern of an electromagnetic induction method, pattern inspection is required in advance in the production process. Various methods of inspecting the capacitive pattern for hand-touch have been proposed, but it is difficult to find the related technical data for the pattern inspection method of the transparent electromagnetic induction method. In this study, to develop an inspection system for a fused electromagnetic resonance pen sensor with a copper-etched metal mesh pattern, an inspection algorithm and method for measuring the antenna impedance inside the sensor was proposed by measuring only the exposed FPCB connector. The proposed method was configured as a control board consisting of a microprocessor that forms a loop between specific channels according to the command of a computer, a computer-controlled by the Windows program, an LCR meter measuring the impedance between specific channels, and transmitting the measurement results back to the computer. An evaluation of the proposed system and measurements of nine specimens showed that it could detect the defects of the sensor used in the actual product.
Keywords
Transparent Pattern; Electromagnetic Resonance; Pen; Metal Mesh; Inspection;
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  • Reference
1 Young Kee Ryu, Kuk Won Koh, Hak Soo Kim,"A Non-contact Two-Dimensional Position Sensing Device Using Electromagnetic Induction", Journal of the Korean Society for Precision Engineering 29(11), 2012.11, 1159-1163. DOI:https://doi.org/10.7736/KSPE.2012.29.11.1159   DOI
2 H.Kim, M.W.Cheon, S.H.Jau, "Development Trend of Next-Generation Flexible Transparent Electrodes for Flexible Electronic Devices", Microelectronics and Packaging Journal, pp.6-8, 2014.
3 FTLab Co., "Capacitive touch screen panel inspection device and inspection method using switching member",Korea Patent 1012797370000, 2013.06.21.
4 Pamtron Co., "Capacitive touch screen panel inspection device and method using PLL", Korea Patent 1012672590000, 2013.
5 MicroInspection Co., "Inspection of Touch Panel", Korea Patent 1010916940000, 2011.
6 Samsung Mobile Display Co., "Active Stylus", Korea Patent 1020100089953, 2010.
7 C.H.Lee, "A Study on the Electromagnetic Wired Tablet Design", Sunmoon Univ. Master Thesis, 2009.
8 K.T.Bae etl, "Trend of nano-mesh transparent electrode technology", Information Display, Vol 11, No.5,pp. 47-49, 2010.