推動廢液晶顯示器中液晶面板處理及再利用技術之開發及推廣專案工作計畫
| 中文摘要 | 隨著液晶顯示器逐漸取代傳統陰極射線管成為主流顯示裝置，其生產量及使用量日益增多，導致廢棄量與日俱增。以現行處理模式雖然可將廢液晶顯示器簡單拆解成數個單元並依材料別進行回收，然而對於廢液晶面板卻礙於無適合的處理方式僅能委託廢棄物處理廠進行掩埋或物理處置。由於廢液晶面板對環境具潛在風險且可能對人體產生危害，越來越多的國家禁止這樣的處理方式而將其暫存。因此亟需開發相關的回收處理技術以解決此日趨嚴重的問題。液晶面板中除了液晶外，尚含有玻璃、有機材料和銦等金屬材料。其中，液晶是一種高單價的化學品，穩定性高且不易降解；銦是一種貴金屬；面板玻璃為一種高純度的無鹼玻璃且成份穩定。這三項物質為液晶面板中最具回收價值的材料。因此，本計畫針對廢液晶面板中的液晶、銦和玻璃開發再利用技術並將其製成高值化的再利用產品。其中，自廢液晶面板中取出的液晶，經過調配、純化後，可重新製成液晶顯示器且顯示性能與市售商品一致，亦可製成高分子分散型智慧型窗戶；玻璃基板上的銦以鹼洗法搭配沉澱法分離、濃縮後可再製成靶材，且銦的回收率可達90%以上；玻璃則改質成多孔吸附劑用以吸附廢水中的鉛，且對鉛的最大吸附量每公克可達50毫克。 | ||
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| 中文關鍵字 | 廢液晶面板、液晶、再利用 | ||
基本資訊
| 專案計畫編號 | EPA-103-HA14-03-A258 | 經費年度 | 103 | 計畫經費 | 8280 千元 |
|---|---|---|---|---|---|
| 專案開始日期 | 2014/07/10 | 專案結束日期 | 2015/12/31 | 專案主持人 | 呂健瑋 |
| 主辦單位 | 回收基管會 | 承辦人 | 沈美智 | 執行單位 | 財團法人工業技術研究院 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
|---|---|---|---|
| 期末報告 | 推動廢液晶顯示器中液晶面板處理及再利用技術之開發及推廣專案工作計畫-公開版.pdf | 0MB |
A Program for Developing and Promoting Recycling Technologies of LCD Panels
| 英文摘要 | LCDs have replaced CRTs as the main display devices recently. To satisfy the increasing demands, billions of LCDs are manufactured annually. However, as more LCDs are produced and are used, the amount of LCD waste is increasing at an alarming rate. LCD waste can be simply disassembled into a numerous parts, most of which are commonly recycled, but the LCD panels typically are not. Waste LCD panels are generally disposed of in landfills or by physical treatments. An increasing number of countries are prohibiting such treatments, because waste LCD panels are potentially hazardous and detrimentally affect human health. The development of a new solution that involves the recycling and recovery of waste LCD panels is important. LCD panels consist of LCs, indium, glasses and other rare metals and organic materials. LCs is stable, non-degenerate and has high unit price. Indium is rare in Earth's crust. Glasses are a kind of alkaline earth boro-aluminosilicate with high purity and stable compositions. These three materials have higher recycling values than other materials in LCD panels. Therefore, this work developed a method for recovering and re-using LCs, indium and glasses from waste LCD panels. The reformulated LC mixture, after it had undergone extraction, purification and blending, was utilized to produce LCD again and is display performance reached the commercial level. The reformulated LC mixture also could be applied to fabricate the polymer-dispersed liquid crystal-based smart windows. The recovery rate of indium from waste LCD could reached to 90% by simply leaching and concentrating process. After removing LCs and indium, the glasses were transformed into a high efficiency absorbent for treatment of waste water which was contained some heavy metals such as lead (Pb) by a specific process. The maximum adsorption capacity of Pb was 50 mg/g according to the Langmuir adsorption model. | ||
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| 英文關鍵字 | Waste LCD panel, liquid crystal, reuse | ||