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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/55451
Title: | 離型取下應力模擬 2D Simulation of De-bonding Problems of Flexible Electric Devices |
Authors: | Tsung-Wei Lin 林宗緯 |
Advisor: | 張正憲 |
Keyword: | 可撓性AMOLED,牽引力-位移法則,雙懸臂樑理論,最佳化模型, flexible AMOLED,traction separation law,double cantilever beam theory,optimal model, |
Publication Year : | 2014 |
Degree: | 碩士 |
Abstract: | 主動式陣列有機發光二極體(active-matrix organic light-emitting diode, AMOLED)在近年來大量使用於手機、平板電腦及電視等電子設備的屏幕。而自發光性、廣視角、高對比、反應速度快及低耗能等特點使其成為面板業發展的重點。然而在未來發展中,可撓性AMOLED將成為下一代面板的關鍵,只可惜在製程上良率偏低導致其無法量產。因此各大面板業的龍頭國家,如韓國、台灣等都在解決製程良率問題,以搶得市場先機。
可撓性AMOLED主要採用塑膠基板取代玻璃,並且將其多層結構蒸鍍於玻璃上,而ITRI的FlexUP取下技術為待製程完畢後再利用一薄鋼板吸附於面板並利用儀器控制曲率取下。本研究的目的為針對該取下技術提升良率,然而脫層與折角現象為實驗中易觀察到的主要破壞機制,因此本研究利用牽引力-位移法則量化離型層特性,並根據雙懸臂樑理論定義其特徵,以建立相關離型取下模型。 根據所建立之離型取下模型提供弱鍵結力的層間應力計算及參數分析來達到最佳化模型。本研究之參數有真空吸盤與多孔性材料之剛度及真空吸盤之預留長度的影響分析,並綜合其結果提供最佳化模型的設計成果。最後,沿用單載板相關理論,創建雙載板模型,分析雙載板之折角現象,並提供可行的製程建議。 In recent years, active-matrix organic light-emitting diode (AMOLED) extensively used in electronic devices’ screen such as mobile phones, tablet PCs and TVs. However, the features such as self-illuminating, wide viewing angle, high contrast, fast response and low power consumption make it become the development priorities of the panel industry. In the future development, the flexible AMOLED is the key technology of the next generation. Unfortunately, the low yield rate in the manufacturing process cannot lead to mass production. Therefore, in order to seize market opportunities, the panel industry leader, such as Korea and Taiwan, are now solving the problems of manufacture. The purpose of this study is to improve the yield rate of de-bonding process. However, the delamination and corner phenomenon are the major failure mechanism which can easily observed in the experiment. Therefore, this study establishes the FlexUP model by using traction separation law to quantify the properties of de-bonding layer which can be defined by Double cantilever beam theory. According to the FlexUP model, the simulation calculates the stress between inner layers with weak bonding and also provides parameter analysis to achieve the optimal model, such as the stiffness of the porous material and sucker and the preserve length of the sucker. In addition, another model for dual carrier board which follows the theory of single carrier model provides preliminary estimate and experimental proposals in the future. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/55451 |
Fulltext Rights: | 有償授權 |
Appears in Collections: | 應用力學研究所 |
Files in This Item:
File | Size | Format | |
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ntu-103-1.pdf Restricted Access | 1.81 MB | Adobe PDF |
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