臺灣博碩士論文加值系統

本論文係就薄膜電晶體液晶顯示器工業檢測技術所需，設計出結合液晶盒電壓保持率、殘餘直流電壓特性與自動化溫度控制電路的多功能量測設備。為提高此裝置的應用性及量測範圍，本團隊利用簡單的溫度控制系統之電子電路搭配加熱晶片與散熱系統，整合現有系統電路及整體裝置架構，透過資料擷取裝置與虛擬儀控介面達到量測與數值分析高度自動化的結果，提出具可攜式、易操作、高準確性及廣泛應用之溫度可調式液晶盒量測裝置，並且用來探討扭轉與水平排列之向列液晶的電壓保持率與殘餘直流電壓特性。

According to the requirement on the detection of display performance in thin film transistor liquid crystal display (TFTLCD), a multi-functional instrument for the measurement of voltage holding ratio (VHR), residual direct current (RDC), and electro-optical characteristics of liquid crystal cells have been developed by our research group. In order to expand the application field and measurement range for abovementioned parameters, in this study, a simple temperature-control system consisting of heating chips and cooling systems is designed and combined into our proposed instrument. We also integrate various types of circuits and whole framework for the instrument to obtain highly automatic measurement and numerical analysis through the data acquisition and interface of virtual instrument control. Furthermore, electrical properties such as the VHR and RDC, of twisted nematic and planar-aligned liquid crystal cells under specific measuring conditions are presented.

摘要 I
Abstract II
致謝 III
目錄 IV
圖目錄 VII
第一章 緒論 1
1.1 離子電荷對液晶顯示元件的影響 1
1.2 液晶盒內之離子來源 2
1.3 離子效應研究方式 4
1.4 本研究目的與論文架構 7
第二章 理論背景 8
2.1 離子電荷模型 8
2.2 電壓保持率與殘餘直流電壓的研究進展 10
2.3 電壓保持率與殘餘直流電壓的量測原理 12
2.3.1 電壓保持率量測原理 12
2.3.2 殘餘直流電壓量測原理 15
第三章 樣品製作與實驗儀器開發 20
3.1 材料 20
3.2 液晶樣品盒 20
3.3 實驗裝置與量測 21
3.3.1 電壓保持率之量測 21
3.3.2 殘餘直流電壓之量測 22
3.3.3 自動化溫度控制系統 23
3.3.4 通訊軟體 24
3.3.5 整合型量測系統 25
第四章 實驗結果與討論 28
4.1 電壓保持率的量測 28
4.1.1 儀器穩定度 29
4.1.2 液晶盒長時間放置影響 30
4.1.3 頻率與電壓保持率 31
4.1.4 變電壓之電壓保持率 32
4.1.5 偏壓對電壓保持率的影響 32
4.1.6 溫度對電壓保持率的影響 33
4.2 殘餘直流電壓的量測 33
4.2.1 溫度對殘餘直流電壓的影響 34
4.3 UV曝曬對液晶盒的影響 36
第五章 結論與未來展望 38
參考文獻 40
附錄一 液晶CYLC-01之物理特性 76
附錄二 液晶ZLI-2293之物理特性 77
附錄三 液晶E7之物理特性 78
附錄四 液晶E44之物理特性 79
附錄五 液晶材料重要參數比較表 80
附錄六 配向劑SE-2170 81
附錄七 美相液晶盒 82

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