English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 78728/78728 (100%)
造訪人次 : 33538433      線上人數 : 1149
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋


    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/68249


    題名: 螢光粉特性及封裝結構造成白光LED內部溫度之異常分布;Irregular temperature distribution inside white light LED related to characteristics of phosphor and package structures
    作者: 邱仕晟;Chiou,Shih-chen
    貢獻者: 光電科學研究所碩士在職專班
    關鍵詞: 發光二極體;螢光粉;溫度分布;有限元素分析;LED;phosphor;temperature distribution;FEA analysis
    日期: 2015-07-29
    上傳時間: 2015-09-23 11:12:56 (UTC+8)
    出版者: 國立中央大學
    摘要: 本論文利用發光二極體的光源特性(Light Emitting diode, LED),建立半球殼螢光粉封裝的熱功率密度分佈數值模型,並以蒙地卡羅法(Monte Carlo method)解決其他封裝結構數值模型的應用問題。再以有限元素分析(finite element analysis, FEA)軟體模擬LED的溫度分布,針對LED操作的電功率、功率轉換效率、螢光粉的量子效率與封裝膠的熱傳導係數作參數掃描分析。最後改變封裝的幾何結構,以半球殼封裝(Remote-dome phosphor package)、圓形平板封裝(Circular plate package)、半球封裝(Half-dome phosphor package)與表面封裝(Conformal coating package)為主,探討LED的電性、封裝的材料與幾何對LED溫度分布的影響。;This research uses the properties of LED light sources to build a numerical model of the thermal power density for remote-dome phosphor package. Monte Carlo method is applied to solve the thermal power density for the other phosphor packaging method. Finite element analysis software is used after to simulate the temperature distribution of LEDs to analyze with scanning the parameters of electric power, power efficiency, and quantum efficiency of phosphor and the thermal conductivity of the adhesive used. Furthermore, the geometrical structure of the phosphor packaging is change. The packaging methods are based on remote-dome, circular plate, half-dome and conformal coating. How the temperature distribution in LEDs will affected by electric properties, packaging material and geometrical structure are discussed in this research as well.
    顯示於類別:[光電科學研究所碩士在職專班 ] 博碩士論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    index.html0KbHTML1027檢視/開啟


    在NCUIR中所有的資料項目都受到原著作權保護.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 隱私權政策聲明