사용 후 터치스크린 패널의 투명전극용 ITO의 폐기방법별 물질 전과정평가

이수선¹, 이나리¹, 김경일¹, 안중우^*, 홍태환¹

Material Life Cycle Assessment for ITO Electrode of used Touch Screen Panel according to disposal methods

Soo Sun Lee¹, Na Ri Lee¹, Kyeong Il Kim¹, Joong Woo Ahn^*, Tae Whan Hong¹

¹한국교통대학교 신소재공학과/친환경 에너지 변환 저장소재 및 부품개발 연구센터

^*성신여자대학교 청정융합과학과

¹Department of Materials Science and Engineering/Research Center for Sustainable Eco-Devices and Materials (ReSEM), Korea National University of Transportation

^*Department of Interdisciplinary ECO Science, Sungshin Women's University

ⓒ Copyright 2012 The Korea Society for Life Cycle Assessment. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: Aug 16, 2012; Accepted: Sep 17, 2012

Published Online: Oct 31, 2012

Abatract

In this research, Material Life Cycle Assessment(MLCA) has been carried out to evaluate the environmental impacts about disposal of ITO(Indium Tin Oxide). ITO is often used for touch and flat screen of phone, PC, computer because of its electrical conductivity and optical transparency which it can be deposited as a thin film. Indium is one of the rare earth and used to ITO material. When demand of the ITO increases, shortage of indium have concerned. This is not only resources insufficient problem it is also environmental problem. Because ITO which did not recycle and landfill or incineration cloud be cause a environmental pollution.

According to waste treatment method, disposal about 1kg of ITO was used as the reference flow. There are difficulties for data collection about emissions from waste treatment in LCA. So there is a need to focusing landfill, incineration process for ITO. From this study, it is found out that landfill of ITO has the highest environmental impacts except GWP. But incineration is also high environment impact value by a little gap.