Trend Analysis of Dissipated Electrostatic Discharge Energy in Touchscreen Displays

Zhekun Peng, Shubhankar Marathe, Hossein Rezaei, Giorgi Maghlakelidze, David Johannes Pommerenke, Ali Foudazi, Cheung Wei Lam, Daryl G. Beetner, DongHyun Kim

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review

Abstract

Touchscreen displays can be susceptible to sparkless electrostatic discharge events. The energy observed by sensitive touchscreen circuitry can vary significantly with design parameters like the glass thickness, the capacitance between the sensor pad and the ground structure, and the resistance of the traces and sensor terminations connected to the pad. The energy dissipated in resistive structures within the display can lead to damage. Methods are presented to estimate the maximum energy dissipated in the touchscreen circuitry during a spark-less discharge to the display. The trends in the energy with variations in design parameters are analyzed using traditional curve-fitting techniques. The analysis was performed using measured data obtained for 20 touchscreen configurations when the ESD gun was charged to 9 kV and 15 kV. The analysis helps the designer to understand the trends and to predict how future design decisions may impact ESD susceptibility. Results suggest that immunity can be maximized by increasing the glass thickness, reducing the load resistance, and reducing the distance between the sensor pad and the PCB return plane.
Original languageEnglish
Title of host publication2020 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMCSI 2020
Pages188-193
Number of pages6
ISBN (Electronic)978-1-7281-7430-3
DOIs
Publication statusPublished - Jul 2020
Event2020 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity: EMCSI 2020 - Virtual, Reno, United States
Duration: 27 Jul 202031 Jul 2020

Conference

Conference2020 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity
Abbreviated titleEMCSI 2020
CountryUnited States
CityVirtual, Reno
Period27/07/2031/07/20

Keywords

  • Electro-static Discharge (ESD)
  • energy
  • measurement-based
  • sparkless discharge
  • touchscreen
  • trend analysis

ASJC Scopus subject areas

  • Information Systems and Management
  • Safety, Risk, Reliability and Quality
  • Signal Processing
  • Radiation
  • Electrical and Electronic Engineering

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