Quantitative assessment of touch-screen panel by nondestructive inspection with three-dimensional real-time display optical coherence tomography

Nam Hyun Cho, Kibeom Park, Jae Young Kim, Yeongri Jung, Jeehyun Kim

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

We investigated the use of optical coherence tomography (OCT) to measure several materials immersed in optical adhesives. The effects of variations in the concentration, physical characteristics, and thickness of the materials were studied, and these parameters were found to significantly affect the OCT measurement. The materials were selected for their distinct spectral properties in the infrared region. To ensure reliability, we acquired images using a scanning electron microscope after performing the semiconductor production process. We verified the feasibility of the application of OCT for defect inspection and product verification of touch-screen panels.

Original languageEnglish
Pages (from-to)50-57
Number of pages8
JournalOptics and Lasers in Engineering
Volume68
DOIs
StatePublished - May 2015

Keywords

  • Defect inspection
  • Nondestructive optical inspection
  • Optical coherence tomography
  • Touch-screen panel

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