觸控面板是由不同材料所組成之複雜結構，由於結構內部不同材料間材料性質的差異，使得內部元件結構在嚴苛的製程與封裝環境下產生變形且連帶影響裝置，進而造成面板表現度不佳之問題，導致觸控面板失效。因此，觸控面板結構之可靠度是一重大關鍵，若能預測其結構之挫曲行為，並提供其特徵值之比較關係，則將提供業者設計元件相當重要之資訊。本文之研究目標主要希望藉由一有系統之失效分析流程，針對面板結構所面臨之錯誤定位觸發及功能性之觸控定位精度進行討論，以提供面板失效性問題之有效改善。本論文從板殼力學的觀點出發，配合有限元素軟體建構虛擬模型結構以進行相關模擬。針對觸控面板進行簡化之工作後，分別探討ITO/PET薄膜與橡膠密封墊片結構之關聯性與其各別受力行為之討論。本文討論橡膠密封墊片結構之壓縮率與其輸出剪應力之關係，並提出降低蒲松比之想法，以降低提供給ITO/PET薄膜之作用力;ITO/PET薄膜結構方面，利用多種施力型式以估計該結構之特徵值，並比較在不同邊界條件下能承受之挫曲臨界負載值之比較。在本研究中，將建立實驗系統以進行觸控面板之高程量測，並利用有限元素軟體以相同之施力與環境條件進行後挫曲之模擬比對，最後再提出降低材料剛性之想法，以減少失效發生之機會。此外，在觸控面板內部元件之功能性探究方面，本文將利用有限元素軟體進行觸控面板之定位精度模擬，並以內部之間隔球間距作為參數變因，討論其觸控之最佳化範圍，以供開發者設計方針，縮短開發時間。

Thin ITO-based PET conductive membranes are the major sensing structure in resistive touch panels for network phones or other applications. However, device failures such as early touch and false trigger have been reported. By examining the surface profiles, it was found that these membranes have considerable initial out of plane deformation. This could be a sign of membrane buckling and post-buckling since the clamped design could causing additional in-plane compression which could triggering the structural buckling. As a result, it is important to analyze the buckling behavior of ITO/PET membranes due to assembly issues, for developing engineering solutions and quality assurance. In this work, both FEA and essential experimental characterizations are performed toward solving this problem. This work mainly focuses on the buckling behavior by considering the effect of the the elastomer (Gasket) and the compliance of double side glues (DSG) which associating post-buckling behavior. In parallel, experimental investigations have been conducted for characterizing material properties of the membrane, elastomer, and adhesion tapes, for supporting the buckling and post-buckling analyses. By validating investigations, the major control factor for causing malfunction of touch panel could be identified and the corresponding engineering solutions would be developed for enhancing the device reliabilities. Moreover, in this work, it also uses FEA to research the functional internal components of the touch panel for positioning accuracy. As a result, it suggests the optimal design guidelines to touch panel designers for shortening their development time.

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