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三維壓電致動器微鏡子之設計與製作 許承岳、鄭江河

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三維壓電致動器微鏡子之設計與製作 許承岳、鄭江河

E-mail: [email protected]

摘 要

由於科技的日新月異加上人們生活品質要求的提高,為了追求更高視覺享受的品質,以及一個舒適的視覺享受環境,各界 對於顯示器的開發與研究也投入了相當多的心力。而在投影電視的發展方面,運用數位光學處理技術(DLP),將光源經過 集光器後,經由透鏡聚焦,穿過RGB三色濾光片轉盤,達到全彩的效果,再投射至DMD晶片上,透過驅動電極控制每一 片微鏡片傾斜角度,並控制偏轉時間,以切換光的反射方向,最後再經由鏡頭投射呈像。其核心技術即是DMD的製作,

目前的DMD的發展是以靜電的方式來驅動微小鏡子。 本文則是針對另一種驅動方式即以壓電致動器的方式來對微鏡面作 分析與設計,目的在分析一個繞鏡面中心軸線轉動與移動的微小鏡子,其原理是藉由電壓驅動壓電懸臂樑之結構產生致動 力與位移,透過偶合樑與扭轉樑連接鏡面達到旋轉或平移鏡面的效果,而使同一平面之微鏡面有3D的自由度。

關鍵詞 : 壓電,微鏡子,溶膠凝膠法

目錄

封面內頁 簽名頁 授權書...iii 中文摘要...iv 英文摘 要...v 誌謝...vi 目錄...vii 圖目

錄...x 表目錄...xiii 緒論...1 第一章 第二章 1.1前 言...1 1.2本文目標...6 1.3國內外有關本問題之研究情況...8 1.3.1國內目前研究 狀況...8 1.3.2國外目前研究狀況...10 壓電薄膜發展製作與量測...12 2.1鐵電薄膜之發

展...12 2.2鐵電特性...13 2.3鋯鈦酸鉛(Pb(ZrxTi1-x)O3,PZT)鐵電材料...15 2.4 PZT合成方 式...15 2.4.1壓電薄膜製程步驟...17 2.4.2薄膜溶液的備製...18 2.4.3薄膜在基板上的披 覆...20 2.4.4低溫焦化處理...21 2.4.5高溫退火處理...21 2.5薄膜性質量測...22 2.5.1電性量測...22 2.5.2薄膜物性量測...25 第三章 壓電微鏡子結構設計與製作...26 3.1微 鏡子幾何結構設計...26 3.2微鏡子自由度之設計...29 3.2.1微鏡面中心繞x軸轉動...29 3.2.2微鏡 面中心繞y軸轉動...30 3.2.3微鏡面中心沿z軸平移...31 3.3複合結構之理論...32 3.4壓電微鏡 子ANSYS模擬分析...36 3.4.1壓電懸臂樑位移量分析...36 3.4.2鏡面繞x軸轉動之靜態分析...38 3.4.3鏡面 繞y軸轉動之靜態分析...40 3.4.4鏡面沿z軸平移之靜態分析...41 3.4.5 鏡面扭轉角計算...42 3.4.6 微鏡子 模態分析...43 3.5製程步驟規劃...45 第四章實驗方法與特性量測...48 4.1選擇

以Pt/Ti/Si3N4/Si為基板...49 4.1.1基材的準備...49 4.1.2 MOE系列溶液配製...50 4.1.3 PZT薄 膜厚度的量測...50 4.1.4晶格結構XRD分析...51 4.1.5電性分析...53 4.2 diol系列溶液配 製...54 4.2.1薄膜厚度的量測...54 4.2.2晶格結構XRD分析...55 4.2.3電性分

析...57 4.3壓電致動器微鏡子製作...59 4.3.1微鏡子之結構製作...59 4.3.2壓電微鏡子製 作...60 第五章總結...62 5.1結論...62 5.2未來研究方向...63 參考文獻...65

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