ESD to the display inducing currents measured using a substitution PC board

Satyajeet Shinde, Jianchi Zhou, Shubhankar Marathe, Atieh Talebzadeh, Yingjie Gan, David Pommerenke, Pengyu Wei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publication2016 IEEE International Symposium on Electromagnetic Compatibility, EMC 2016
PublisherInstitute of Electrical and Electronics Engineers
Pages707-712
Number of pages6
ISBN (Electronic)9781509014415
DOIs
Publication statusPublished - 19 Sep 2016
Externally publishedYes
Event2016 IEEE International Symposium on Electromagnetic Compatibility, EMC 2016 - Ottawa, Canada
Duration: 25 Jul 201629 Jul 2016

Publication series

NameIEEE International Symposium on Electromagnetic Compatibility
Volume2016-September
ISSN (Print)1077-4076
ISSN (Electronic)2158-1118

Conference

Conference2016 IEEE International Symposium on Electromagnetic Compatibility, EMC 2016
CountryCanada
CityOttawa
Period25/07/1629/07/16

Keywords

  • flex cable
  • LCD
  • mobile device
  • sparkless ESD
  • substitution board
  • touch-screen

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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  • Cite this

    Shinde, S., Zhou, J., Marathe, S., Talebzadeh, A., Gan, Y., Pommerenke, D., & Wei, P. (2016). ESD to the display inducing currents measured using a substitution PC board. In 2016 IEEE International Symposium on Electromagnetic Compatibility, EMC 2016 (pp. 707-712). [7571735] (IEEE International Symposium on Electromagnetic Compatibility; Vol. 2016-September). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ISEMC.2016.7571735