臺灣博碩士論文加值系統

摘 要
本論文以多區域垂直配向顯示器模擬(Multi-domain vertical alignment)
為主要的驅動方式，模擬其液晶模態，使得液晶顯示器具備基本的廣視角
及良好的光電效率:
1. 根據 TFT 元件設計原理，設計出具有廣視角效果的多區域垂直配向結
構，並討論參數對光電曲線的影響。採用廣視角MVA 技術主要優勢，
在於改善暗態漏光使增加對比，並使視角達到優化的效果。
2. 採用垂直配向技術，具有高穿透率、高開口率以及快速反應時間等特性；
此外，有效利用優化的光阻配方，以及高層次的光學畫素設計可使對比
度顯著提高。
3. 針對設計面可改變：a.ITO 電極b.Slit 寬度c.介電異方性等性質進行比
較。
4. 利用模擬軟體TechWiz LCD 的功能，藉由理論計算結果，外加補償相位
遲滯片與液晶層特性的模擬。
依此我們可依照相同的觀念設計出效果優異具有廣視角與高對比度的
MVA 結構，將此結果做為設計參考依據，並藉此減低因設計不良造成的開
發費用與時間消耗，達到降低成本的效果。

ABSTRACT
The paper is about applying Multi-domain vertical alignment as a main
driver to simulate the liquid crystal form for making the TFT display with
fundamental wide angle and splendid photoelectric efficiency.
1. To elaborate the structure of wide angle effect "Multi-domain vertical
alignment" with TFT design theory and discuss the factors of the photoelectric
distribution curve. The advantages of applying wide view angle MVA
technology are all about solving Dark-state light leakage to enhance contrast and
perfecting the vision angle.
2. The advantages of applying vertical alignment are high penetrability、high
aperture ratio and short response time. Besides, we can apparently enhance the
contrast by applying a better photo resistance recipe and advanced pixel design.
3. In design area, we can adjust a. cell gap、b. the width of ITO electrode slit and
c. dielectric to compare the differences.
4. to apply "TechWiz LCD" to calculate the result by the theory and make
the collateral simulations of phase latency film compensation and the property
of liquid crystal layer.
Eventually we can figure out the structure of brilliant wide angle and high
contrast MVA by the same design concept, take that as the design rule to reduce
the expense and time wasted by improper design, and therefore we can reduce
the cost.

目 錄
貢 獻 Ⅰ
摘 要 Ⅱ
ABSTRACT III
致 謝 Ⅳ
目 錄 Ⅴ
圖目錄 IX
表目錄 ⅩⅠ
名詞中英對照 ⅩⅢ
第一章 緒論 1
1.1. 研究背景 1
1.1.1 TN型顯示器 2
1.1.2 IPS型顯示器 5
1.1.3 VA型顯示器 7
1.2. 廣視角液晶顯示器類型 9
1.2.1 TN+film型顯示器 9
1.2.2 ASV技術 11
1.2.3 MVA(Multi-domain vertical alignment)技術 12
1.3. 顯示特性名詞介紹 17
1.3.1 視角 17
1.3.2 對比 18
1.3.3 灰階反轉 18
1.3.4 色差 18
1.3.5 反應時間 19
1.4. 模擬軟體介紹 21
1.4.1 TechWiz LCD模擬軟體簡介 21
1.4.2 田口法Minitab分析簡介 23
第二章 光學原理簡介 34
2.1 液晶的光學特性 34
2.2 Stoke’s Vector 35
2.3 線性偏振(linear polarzation) 37
2.3.1 線性水平偏振光 38
2.3.2 線性垂直偏振光 38
2.3.3 線性+45°偏振光 39
2.3.4 線性-45°偏振光 39
2.4 圓偏振(circular polarzation) 39
2.4.1 右手圓偏振光 40
2.4.2 左手圓偏振光 40
2.4.3 Mueller Matrix 41
第三章 增加對比與視角補償 43
3.1 暗態漏光 43
3.2 視角補償 44
第四章 各參數對光學的影響 46
4.1 畫素基本結構與參數 46
4.2 液晶層厚度(cell gap) 50
4.3 ITO電極Slit寬度 55
4.4 介電異方性(dielectric anisotropy) 59
4.5 彈性係數(elastic constant) 64
4.6 田口分析結果 65
第五章 結論 70
第六章 未來展望 72
參考文獻 73

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