本研究目的為利用數位影像相關法(Digital Image Correlation, DIC)
來量測氧化銦錫/聚乙烯對苯二甲酸酯（ITO/PET）薄膜撓性基板的熱
膨脹係數，並分別探討ITO 與PET 厚度對試片熱膨脹係數之影響。測
試溫度從室溫到PET 基材的玻璃轉換溫度前取整數70℃為觀察範
圍。本研究提出之實驗方式可降低因熱空氣折射率變化導致之實驗誤
差，實驗所測得熱膨脹係數，誤差可從10~17％降至5％以下。
實驗結果顯示ITO/PET 薄膜撓性基板之熱膨脹係數具方向性，且
ITO/PET 薄膜撓性基板之熱膨脹係數隨著PET 撓性基板之厚度減少而
增加，但隨ITO 厚度增加，即ITO 薄膜表面電阻值之降低而增加。

In this studing, application of the digital image correlation method (DIC) for determining the coefficient of thermal expansion (CTE) of
Indium Tin Oxide/Polyethylene Terephthalate(ITO/PET) thin film/flexible
substrate was proposed and the effects of thinkness variations of ITO and
PET, respectively, on the CTE of the specimens was disscussed. The
observation range of experimental temperature was chosen from room
temperature to the glass transfer temperature of PET, 70℃. A novel DIC
experimental process for reducing the errors caused from the variations of
the refractive index of the surrounding heated air was proposed.
As a result, the experimental error of CTE measurement was reduced form
10~17% to less than 5%. The experimental results showed that the CTE of
ITO/PET specimen is anisotropic. Futhermore, the CTE of an ITO/PET
specimen will be increased by decreasing the thinkness of PET flexible
substrate, and increased by increasing the thinkness of ITO film - which
means decreasing the surface resistance of ITO film.

論文審定書 ................................................................................................. i
誌謝 ............................................................................................................ ii
中文摘要 ................................................................................................... iii
Abstract ..................................................................................................... iv
目錄 ............................................................................................................ v
圖次 ......................................................................................................... viii
表次 .......................................................................................................... xii
符號說明 ................................................................................................. xiii
第 一 章 緒 論 ...................................................................................... 1
1.1 研究目的與源起 ........................................................................... 1
1.2 文獻回顧 ....................................................................................... 3
1.2.1 氧化銦錫導電薄膜撓性基板之應用 ................................. 3
1.2.2 熱膨脹係數的量測 ............................................................. 5
1.2.3 數位影像相關法起源與應用 ............................................. 6
1.3 全文架構 ...................................................................................... 9
第 二 章 基 礎 理 論 ........................................................................ 11
2.1 熱膨脹係數定義 ......................................................................... 11
2.2 數位影像相關法 ......................................................................... 13
vi
2.2.1 影像圖片資訊 ................................................................... 14
2.2.2 影像重建 ........................................................................... 14
2.2.3 物體平面變形理論 ........................................................... 15
2.2.4 影像間的相關性原理 ....................................................... 16
2.2.5 搜尋最佳位移參數 ........................................................... 17
2.2.6 影像特徵搜尋 ................................................................... 19
第 三 章 實 驗 方 法 ........................................................................ 24
3.1 實驗方式與相關設備儀器 ......................................................... 24
3.1.1 硬體儀器 ........................................................................... 24
3.1.2 軟體設備 ........................................................................... 26
3.2 數位影像相關法環境參數測定 ................................................. 27
3.2.1 比例因子 ........................................................................... 27
3.2.2 影像重建誤差 ................................................................... 27
3.2.3 數位影像相關法的解析度與精密度 ............................... 28
3.2.4 分析結果的正確性 ........................................................... 28
3.2.5 二維平面剛體位移驗證 ................................................... 29
3.3 人工特徵之選用 ......................................................................... 29
3.4 實驗儀器之架構與建立 ............................................................. 30
3.4.1 加熱平台儀器之架設 ....................................................... 30
vii
3.4.2 封閉空間環境設計 ........................................................... 31
3.5 熱膨脹係數計算方法之比較 ..................................................... 32
3.6 補償試片 ..................................................................................... 33
3.7 實驗步驟 ..................................................................................... 34
3.7.1 試片準備 ........................................................................... 34
3.7.2 影像擷取步驟 ................................................................... 35
3.7.3 數位影像相關法分析 ....................................................... 37
3.7.4 實驗步驟的問題與解決 ................................................... 37
3.8 鋁合金試片二維平面熱膨脹係數之量測驗證 ......................... 39
第 四 章 結 果 與 討 論 .................................................................. 68
4.1 溫度對ITO/PET 基板熱膨脹係數之影響 ................................ 68
4.2 ITO/PET 基板熱膨脹係數非等向性之探討 ............................. 69
4.3 ITO 表面電阻值對熱膨脹係數之影響 ..................................... 70
4.4 PET 厚度對熱膨脹係數之影響 ................................................. 70
第 五 章 結 論 與 未 來 展 望 ...................................................... 87
5.1 結論 ............................................................................................. 87
5.2 未來展望 ..................................................................................... 87
參 考 文 獻 ............................................................................................ 88
附 錄 ........................................................................................................ 95

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