| 英文摘要 |
During the execution of this project, we have already finished investigating the current status of waste liquid crystal display (LCD) recycling and baseline during nearly five years. We found out that LCD products had become mainstream which share more than 90% market. The LCD produces, include LCD monitors, notebook computers and LCD TVs, annual manufacturing more than 4 million units In Taiwan. Since 1993, Notebook came out and began to use the LCD. According to the survey literature indicates that the life-cycle was 7 years. Based on the dismantling result, there could produce a lot of reusable metal and plastic, but the LCD panel (about 10%) still disposal by landfill. Through TCLP testing, we found out the LCD monitor include 11 kinds of metals, and trace amounts of organic compounds. Because the waste LCD product has a high recycling value, if it won’t be recycled that will not only waste resources, but also cause lots of garbage problem.
Investigating the current foreign LCD innovative research literature, we found the ITO recycling technology was the mainstream. Surveying the foreign literature, we find out 13 LCD monitor treatment plant. The results show that all the plant only focused on mercury element (CCFL) recycling, and never recycled LC. In addition to comparing different treatment technologies, the LC collection process has more economic than others, so the project decided to focus on the liquid crystal recovery and development the LCD panel separation testing line.
After analysis, we propose the feasible waste LCD panelseparation technology. The LCD panel separation testing line is using the ITRI's patent, which uses solvents to extract and collect the LC from the surface of LCD panel. The testing line could make all of the LC separate from LCD panel, and through detect the LC was no more residues. The testing line includes seven units. After practice, the test line has completed treatment 250 kg of waste LCD panel daily.
We held an announcement campaign and invite specialist, recycle enterprise and LCD Manufacturers to participant at the end of October. All of the participants against the LCD panel disposal by landfills, and interested in this new LCD recycling technology.All of the participants gave high marks, and some of them were interested in this new recovery technology, and said if this technology had the development value, there was willingness to enhance the technical equipment.
After the process of LCD panel separating, the LCD panel glass can be used as raw material of various glass products.Next year, this project will focus on material recycling technology develop and promoting which come from waste LCD panel, and create high value of recycled products.
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