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Article
ESD to the Display Inducing Currents Measured using a Substitution PC Board
Proceedings of the 2016 IEEE International Symposium on Electromagnetic Compatibility (2016, Ottawa, Canada)
  • Satyajeet R. Shinde
  • Jianchi Zhou
  • Shubhankar Marathe
  • Atieh Talebzadeh
  • Yingjie Gan
  • David Pommerenke, Missouri University of Science and Technology
  • Pengyu Wei
Abstract
ESD to a display may upset or damage the display or the touch circuit. The ESD may have a visible spark carrying current to the frame of the mobile device, to the connecting flex cable, or into the display by penetrating the glue between the glass layers. It may also be a sparkless ESD that causes corona charging on the surface of the glass having currents as high as 10 A. A measurement technique is presented that allows measurement of the currents on all traces, including ground of flex cables that connect from the display to the main board of a mobile device. The main board is substituted by a PCB that has the same connections to the body of the mobile device and the same shape, i.e., the same electromagnetic affects. However, all connections to the display are terminated in resistive structures that allow measuring the currents in the flex cable individually. Besides measuring ESD currents, the substitution board offers various other applications with respect to the coupling and propagation of self-interference causing signals or EMI problems.
Meeting Name
2016 IEEE International Symposium on Electromagnetic Compatibility (2016: Jul. 25-29, Ottawa, Canada)
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
  • Cables,
  • Electromagnetic compatibility,
  • Electrostatic devices,
  • Electrostatic discharge,
  • Glass,
  • Liquid crystal displays,
  • Mobile devices,
  • Printed circuit boards,
  • Touch screens,
  • Corona charging,
  • Flex cables,
  • Glass layers,
  • Measurement techniques,
  • PC boards,
  • Self-interferences,
  • sparkless ESD,
  • Display devices,
  • LCD,
  • substitution board
International Standard Book Number (ISBN)
978-150901441-5
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2016 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
9-1-2016
Citation Information
Satyajeet R. Shinde, Jianchi Zhou, Shubhankar Marathe, Atieh Talebzadeh, et al.. "ESD to the Display Inducing Currents Measured using a Substitution PC Board" Proceedings of the 2016 IEEE International Symposium on Electromagnetic Compatibility (2016, Ottawa, Canada) Vol. 2016-September (2016) p. 707 - 712 ISSN: 1077-4076
Available at: http://works.bepress.com/david-pommerenke/96/