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Due to the drastic growth of the liquid crystal display (hereafter LCD) industry in the last decade, lots of waste glass is being produced. There are three types of waste glass derived from LCD glass manufacturers, LCD panel manufacturers and end-of-life LCD devices. Among them cullet from Lber glass (hereafter E-glass). However, the recycling of waste glass from LCD panel (LPWGCD glass is being recycled into a raw material for commercial electric continuous fi) and end waste glass is limited due to various reasons such as contaminants, toxic components and inhomogeneous glass compositions etc. Despite use of LPWG in the cement industry, it is not an effective form of recycling, considering the characteristics of LCD glass. In this work, to examine the possibility of recycling LPWG in the E-glass industry, several glass batches containing LPWG were prepared. First, some optical properties of the prepared and commercial E-glass were examined. Then, the viscosity and liquidus temperature (T L ) were determined. The effect of LPWG was negligible in the transmission and color of the resultant glasses, considering that commercial bulk E-glass has an emerald-green color due to refractory corrosion. With an increase in the LPWG content, the isoviscosity and liquidus temperatures showed opposite behaviors; the temperature (T W ) corresponding to the fiber forming viscosity (10 3 dPas) decreased, whereas the T L increased. Based on T W -T L , the replacement of 50 wt% of the original E-glass with LPWG was recommended. Additionally, economic and environmental effects were discussed. [ABSTRACT FROM AUTHOR]

This study presents a life cycle assessment of an organic light emitting diode display for smartphones, in which our research concentrated on generating a life cycle inventory of specialty chemicals and a fabrication process in manufacturing scale. Previous studies to investigate the environmental impact of organic electronics have been limited to organic photovoltaic cells in a laboratory scale fabrication, which prevents understanding of the practical impact of organic electronics. In this study, we computed cradle-to-gate environmental impact of the most commonly used organic electronics today: active matrix organic light emitting diode (AMOLED) display for smartphones, through the formulation of new approaches to construct inventories for emerging materials and processes. The approaches for constructing inventories of chemicals and fabrication process involve manipulation of existing inventory with stoichiometry, and application of observed correlation between display area and production cost in the display industry. The environmental impact assessment results communicate that integration of detailed material flow improves data representation of the production of complex chemicals. Additionally, environmental impact per AMOLED display exhibited superiority in global warming potential, when compared with a previous study on a comparative size of liquid crystal display. [ABSTRACT FROM AUTHOR]

Abstract: This study investigated the feasibility of producing insulating glass ceramic from thin film transistor-liquid crystal display (TFT-LCD) waste glass and calcium fluoride sludge by vitrification and ceramization processes. This study also explored the effects of MgO as a modifying agent on the flexural strength and dielectric constants. Five different mixing ratios of waste and MgO were analyzed. The major mixture composition is CaF2–MgO–SiO2–Al2O3. In the experiments, the initial glasses were obtained by vitrifying mixtures and then heating the initial glasses to produce glass ceramics. The mixture in which the proportion of TFT-LCD waste glass to calcium fluoride sludge was 7 to 3, with 5 wt% MgO added, underwent complete densification at a relatively low temperature (780 °C). Compared to other mixtures, its flexural strength (140 MPa) was higher, and its dielectric constant (6.4 at 1 MHz) was lower. With increasing MgO content, the initial glasses exhibited lower crystallization temperatures. The results also indicate that densification is considerably hindered by the onset of crystallization, resulting in a decrease in the apparent density and flexural strength. The results demonstrate that the TFT-LCD waste glass with calcium fluoride sludge as the fluxing agent and MgO as the modifying agent can be used as a raw material for producing insulating glass ceramics. [Copyright &y& Elsevier]