사용 후 터치스크린 패널의 투명전극용 ITO의 폐기방법별 물질 전과정평가

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.