類紙式軟性觸控顯示器之研發-子計畫二：液態晶體奈米配向及軟式顯示器之組裝及光學性質研究

Abstract

具多功能模組之可攜顯示器，已逐漸成為現代生活不可或缺的必需品；而與使用者互動介面 結合，更是未來發展的趨勢。整合於可攜式顯示電子產品觸控模組，更可直覺性操控且節省產品 面積，而使輕薄可攜式顯示電子產品具有更廣泛的運用。因此，本整合型計畫擬藉由微奈米與軟 性電子的技術，開發＂類紙式軟性觸控顯示器＂。 本整合計畫提出類紙式軟性觸控顯示器，藉由微奈米製程、顯示光學、軟性電子、機械結構 分析及控制整合等技術，以發展整合軟性顯示、軟性多點觸控感測、軟性系統控制等模組，並提 供系統資訊顯示與觸控操作功能。上述各技術可依據不同應用之需求，達成輕便薄型化、軟性可 撓化、模組整合化、可攜功能化的類紙式軟性觸控顯示器，並運用於未來的智慧行動資訊生活。 本子計畫利用具多孔性的陽極處理氧化鋁(Anodic Aluminum Oxide: AAO)薄膜及奈米壓印微 溝槽軟性基板做為液晶顯示元件的配向層。利用液晶分子會依基板表面結構排列之配向機制，無 機且具有奈米孔洞陣列的透明之AAO 薄膜具有很高的潛能可以作為液晶顯示元件的配向膜。除 了利用多孔洞AAO 薄膜作為垂直配向層，本計畫也將嘗試使用奈米壓印技術於軟性基板上轉印 出微溝槽結構作為水平配向薄膜。 最後本子計畫將嘗試於陽極處理氧化鋁薄膜製作於ITO透明導電薄膜上及在奈米壓印微溝槽 鍍上ITO 透明導電薄膜，並製作出可電控的液晶顯示元件。未來可以利用此一方式來製作可饒性 顯示元件，並量測其電性反應或利用外加場來量測其錨定強度。

Recently, the portable displays with multi-function modules have become necessities in modern life. Combining the interactive interface is the future trend of portable displays development. By integrating the touch panel module with portable displays, the portable products could be more humanity and have wider applications. Thus, the major goal of this proposal is to develop a “flexible electronic paper-like display” by the micro/nano and flexible electronic technologies. By applying several technologies, including micro/nano fabrication, optical display, flexible electronics, mechanical structure analysis, and controlling systems integration, the flexible electronic paper-like displays are proposed in this proposal. Those displays provide the functions of information display and touching control by developing and integrating the modules of flexible display, flexible multi-point touch sensor and flexible system control on the devices. Base on different applications, those technologies could achieve a flexible electronic paper-like display with the merits of slimness, flexibility, modules integration and portability to apply in future life. In this sub-project, the porous anodic aluminum oxide (AAO) thin film and the nano-imprinted microgroove flexible substrate are used as the alignment layer of the liquid crystal displays (LCDs). Because of the alignment mechanism, the liquid crystal molecules tend to align on the surface homogenously or homeotropically depending on the morphology. The porous AAO thin film, inorganic and transparent film, is an excellent candidate of the alignment layer. On the other hand, the flexible substrates with the microscale groove imprinted by the nano-imprinting technology are used as the homogenous alignment substrates. Finally, in this sub-project, we develop the new process to anodize the aluminum thin film on ITO conductive layer and coat the ITO thin film on the grooved flexible substrate. The electrically controllable LCDs with the AAO thin film or the grooved flexible substrate as the alignment layer will be demonstrated in this sub-project. In the future, the electric performance and the anchoring strength can be measured by applying the external field.