臺灣博碩士論文加值系統

電漿顯示器是目前熱門的大尺寸平面顯示器之一，本論文首先將已建立使用局部電場假設(Local Field Approximation)之模擬程式，加入電子能量守恆方程式（energy balance equation），計算空間中電子平均能量。在局部電場近似假設時，游離與激發反應和電子遷移率皆與局部電場有關，缺乏考慮電子能量的熱傳導與熱對流。加入電子能量方程式後，游離（ionization）與激發（excitation）反應和電子遷移率（mobility）則與電子平均能量有關。藉由電子能量守恆方程式的加入，由模擬結果可發現放電區域將較使用局部電場近似假設為廣。接著將參考J. Meunier等人[5]考慮激發粒子(excited species)和光子放射(photon emission)部分。加入在電漿顯示中，主要用來產生紫外光的Xe*(3P1,3P2), Xe2*(Ou+,1Su+,3Su+)五種粒子計算和其有關之反應式。並在程式中加入能量效率計算。
　　對於科學計算，通常希望在計算的同時，能將結果動態地顯示，因此使用MATLAB套裝軟體建立一後處理繪圖函式庫，將數值模擬程式所運算出之資料結果，送至此後處理程式繪出圖形，以達即時呈現運算結果，即時且方便地對模擬結果加以分析研究。
模擬時，槽中基本氣體是由5 ％ 的氙氣與95 ％ 的氖氣組成的混合氣體，氣體壓力為500 Torr，進行模擬。由模擬結果了解電漿顯示器中在寫入波形和維持波形時，各粒子隨時變的空間密度分佈物理現象，與介電層上壁電荷和壁電流變化情形，並由能量效率計算可知在維持波形時，約有70.8 % 的總能量消耗於離子加熱，只有約29.2 % 的總能量用在電子加熱。由改變初始條件發現，初始條件不同，影響著寫入波形時，電漿點燃時間之早晚。而改變波形上升時間，則影響電漿點燃時間之早晚。

摘要.................................................. i
致謝.................................................. iii
目錄.................................................. iv
圖目錄................................................ vi
表目錄................................................ ix
第一章 簡介.......................................... 1
第二章　文獻回顧...................................... 3
第三章　基本原理...................................... 9
3-1電漿顯示器操作原理介紹.......................... 9
　3-1-1 基本結構................................... 9
3-1-2 工作原理................................... 10
3-2 物理模型....................................... 12
　3-2-1 流體模型................................... 12
3-2-2 幾何結構與邊界條件......................... 15
3-2-3 電漿顯示器中化學反應與放射光譜............. 18
3-3 數值模型....................................... 22
3-3-1 因變數法................................... 22
3-3-2 有限空間微分法............................. 24
3-3-3 連續方程式與動量守恆方程式數值模型......... 26
3-3-4 帕松方程式之數值模型....................... 36
3-4　MATLAB即時繪圖介紹........................... 43
3-5 模擬程式之流程................................ 44
第四章　模擬結果...................................... 45
4-1 起始條件...................................... 45
4-2 模擬結果...................................... 47
4-3 起始條件對氣體放電之影響...................... 68
4-4 驅動脈衝波形上升時間對氣體放電之影響.......... 70
第五章　結論.......................................... 73
參考文獻.............................................. 75
附錄Ａ MATLAB後處理繪圖程式碼......................... 79

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