科技發展日新月異，各種科技產品之運用已遠超乎過去的想像。其中智慧型手機與平板電腦的革命就是最佳範例。成就此革命最重要的因素就在於以觸控面板取代傳統鍵盤。除了能夠節省傳統鍵盤空間增加顯示螢幕空間外，最重要的是它能提供人們更簡單的手勢操作方式、更貼切人們的直觀感受。
現今最主流的觸控感測技術為電容式(Capacitive)感應。此觸控感測方式仍必須確實接觸面板方能感測，在一些公共器材之應用不免會有衛生方面的疑慮，而且一旦動作長時間累積下來容易使面板損耗，造成觸控判別上之誤差。因此，本論文研究致力於如何實現懸浮式觸控系統。於研究初期欲以將人體視為一帶電導體，其表面電場在人體靠近觸控面板時，對觸控面板產生的感應電荷作為懸浮觸控機制，然而實驗的過程中發現，相對於感應電荷，環境中電力訊號藉由人體耦合到觸控面板之訊號影響為主要效應，越靠近面板，其感測到耦合訊號振福越大，故以此處理此電力訊號之偵測器觸控系統為主要研究方向。其整體類比部分系統內容除了觸控式面板懸浮感測前端放大器、峰值偵測電路、多工器(MUX)電路系統之外，亦包含類比數位轉換器(ADC)完成類比訊號部分之系統整合。
其量測結果，本電力峰值偵測系統對於人體與觸控面板之垂直方向(Z軸)之懸浮觸控。於直接觸碰面板之觸控方面，可確實藉由各通道輸出差值完成平面上2D之單點觸控。

摘要
目錄
圖目錄
表目錄
第 1 章 緒論
第 2 章 懸浮式觸控感測前端放大器
第 3 章 峰值偵測電路懸浮式觸控系統
第 4 章 系統晶片下線量測結果
第 5 章 結論與討論
參考文獻

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