Nondestructive defect inspection for LCDs using optical coherence tomography

Su Hwan Kim; Jee Hyun Kim; Shin Won Kang

doi:10.1016/j.displa.2011.04.002

Nondestructive defect inspection for LCDs using optical coherence tomography

Su Hwan Kim, Jee Hyun Kim, Shin Won Kang

School of Electronics Engineering

Research output: Contribution to journal › Article › peer-review

57 Scopus citations

Abstract

In this study, we used optical coherence tomography (OCT) to perform nondestructive inspection of liquid crystal display (LCD) for defects. By using OCT, we obtain tomograms and two-dimensional images of LCD panels. Based on these images, we construct three-dimensional images of the LCD panel and confirm the three-dimensional shape and vertical location of eventual defects with in the LCD panel. This nondestructive and effective defect-inspection method for LCD using OCT that gives direct results and is applicable for detecting defects in flat panel or flexible displays.

Original language	English
Pages (from-to)	325-329
Number of pages	5
Journal	Displays
Volume	32
Issue number	5
DOIs	https://doi.org/10.1016/j.displa.2011.04.002
State	Published - Dec 2011

Keywords

Defect inspection
Nondestructive inspection
Optical coherence tomography
TFT-LCD

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10.1016/j.displa.2011.04.002

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abstract = "In this study, we used optical coherence tomography (OCT) to perform nondestructive inspection of liquid crystal display (LCD) for defects. By using OCT, we obtain tomograms and two-dimensional images of LCD panels. Based on these images, we construct three-dimensional images of the LCD panel and confirm the three-dimensional shape and vertical location of eventual defects with in the LCD panel. This nondestructive and effective defect-inspection method for LCD using OCT that gives direct results and is applicable for detecting defects in flat panel or flexible displays.",

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AU - Kang, Shin Won

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N2 - In this study, we used optical coherence tomography (OCT) to perform nondestructive inspection of liquid crystal display (LCD) for defects. By using OCT, we obtain tomograms and two-dimensional images of LCD panels. Based on these images, we construct three-dimensional images of the LCD panel and confirm the three-dimensional shape and vertical location of eventual defects with in the LCD panel. This nondestructive and effective defect-inspection method for LCD using OCT that gives direct results and is applicable for detecting defects in flat panel or flexible displays.

AB - In this study, we used optical coherence tomography (OCT) to perform nondestructive inspection of liquid crystal display (LCD) for defects. By using OCT, we obtain tomograms and two-dimensional images of LCD panels. Based on these images, we construct three-dimensional images of the LCD panel and confirm the three-dimensional shape and vertical location of eventual defects with in the LCD panel. This nondestructive and effective defect-inspection method for LCD using OCT that gives direct results and is applicable for detecting defects in flat panel or flexible displays.

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KW - Nondestructive inspection

KW - Optical coherence tomography

KW - TFT-LCD

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JO - Displays

JF - Displays

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ER -

Nondestructive defect inspection for LCDs using optical coherence tomography

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Keywords

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