Materials Life Cycle Assessment of Chemical Strengthening Glass Used for Touch Screen Panel

Nowadays, rapidly growing mobile machines such as tablet PC and smart phone equipped with touch screen panel using a sturdy material for products surface protection. Therefore, surge of chemical strengthening glass was increased. Through large areas of chemical strengthening glass, the surface scratch will cause a major failure. Most of these failures will be discarded because it is difficult to reuse. Thus, discarded chemical strengthening glass is expected to increase as with the demand. Accordingly, the importance of environmental pollution, waste landfill has been proposed. Recently, touch screen of chemical strengthened glass all-in-one type was commercialized. Therefore reuse is possible, due to surface of discarded chemical strengthening glass is washed and wipe off the electrode. In this study, we carried out the MLCA(Material Life Cycle Assessment; MLCA) on a chemical strengthening glass by landfill scenario, reuse scenario and identified the key issues.

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Environmental Assessment of Chemically Strengthened Glass for Touch Screen Panel by Material Life Cycle Assessment

Clean Technology ◽

10.7464/ksct.2012.18.3.301 ◽

2012 ◽

Vol 18 (3) ◽

pp. 301-306 ◽

Cited By ~ 2

Author(s):

Na-Ri Lee ◽

Soo-Sun Lee ◽

Kyeong-Il Kim ◽

Tae-Whan Hong

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Environmental Assessment ◽

Touch Screen ◽

Material Life ◽

Strengthened Glass

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MLCA (Material Life Cycle Assessment) for ITO Recycling

Materials Science Forum ◽

10.4028/www.scientific.net/msf.724.12 ◽

2012 ◽

Vol 724 ◽

pp. 12-16 ◽

Cited By ~ 1

Author(s):

Soo Sun Lee ◽

Na Ri Lee ◽

Kyeong Il Kim ◽

Sung Jei Hong ◽

Tae Whan Hong

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Indium Tin Oxide ◽

Environmental Issues ◽

Touch Screen ◽

Assessment Method ◽

Basic Scenario ◽

Material Life ◽

Transparent Conductive Coatings ◽

Increasing Demand

Recently, touch screen is one of the most popular pieces of electrical and electronic equipment in our society, such as laptops, cellular phones, and digital cameras. Indium tin oxide (ITO) is mainly used to make transparent conductive coatings for touch and flat screen. Therefore, there is an increasing demand accordingly. Although accounted for 1% of the touch screen, indium is rare metals. Consequently, it is important to Recycling ITO for National Strategies about Resource Conservation, and reduce Environmental burden. The case which disuses ITO like landfill or incineration, it cloud be harmful to the human health in the long-term. This study intended to identify the environmental aspects with the ITO recycling. The potential environmental impacts were evaluated by using Material Life Cycle assessment method (MLCA). As the result of this study, MLCA would provide more information for environmental issues of ITO. So that it is possible to improve the environmental issues by the monitoring that could be useful and effective for ITO. The study includes two scenarios, the basic scenario is recycling of ITO (10, 20 and 30%) and the other scenario is landfill of ITO.

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