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Materials 2014, 7(12), 7662-7669; doi:10.3390/ma7127662

Characteristics of Indium Tin Oxide (ITO) Nanoparticles Recovered by Lift-off Method from TFT-LCD Panel Scraps

1
Department of Chemistry and BK21 PLUS School of HRD Center for Creative Convergence Chemical Science, Sungkyunkwan University, Suwon 440-746, Korea
2
Display Components and Materials Research Center, Korea Electronics Technology Institute, Seongnam 463-816, Korea
*
Authors to whom correspondence should be addressed.
Received: 13 June 2014 / Revised: 27 October 2014 / Accepted: 17 November 2014 / Published: 27 November 2014
(This article belongs to the Special Issue Recycled Materials)
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Abstract

In this study, indium-tin-oxide (ITO) nanoparticles were simply recovered from the thin film transistor-liquid crystal display (TFT-LCD) panel scraps by means of lift-off method. This can be done by dissolving color filter (CF) layer which is located between ITO layer and glass substrate. In this way the ITO layer was easily lifted off the glass substrate of the panel scrap without panel crushing. Over 90% of the ITO on the TFT-LCD panel was recovered by using this method. After separating, the ITO was obtained as particle form and their characteristics were investigated. The recovered product appeared as aggregates of particles less than 100 nm in size. The weight ratio of In/Sn is very close to 91/9. XRD analysis showed that the ITO nanoparticles have well crystallized structures with (222) preferred orientation even after recovery. The method described in this paper could be applied to the industrial recovery business for large size LCD scraps from TV easily without crushing the glass substrate. View Full-Text
Keywords: recovery; indium-tin-oxide (ITO); nanoparticle; thin film transistor-liquid crystal display (TFT-LCD) panel; scrap recovery; indium-tin-oxide (ITO); nanoparticle; thin film transistor-liquid crystal display (TFT-LCD) panel; scrap
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Choi, D.; Hong, S.-J.; Son, Y. Characteristics of Indium Tin Oxide (ITO) Nanoparticles Recovered by Lift-off Method from TFT-LCD Panel Scraps. Materials 2014, 7, 7662-7669.

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