軟性面板之間隙物結構之製備與研究

The Preparation and Investigation of the Spacer Structure of Flexible Panel

邱孟宏(Meng-Hong Chiu)

指導教授 ： 黃繼遠

大同大學/工程學院/材料工程學系所/碩士(2011年)

摘要

本研究是利用激光雕刻與熱壓成型技術，對可撓性面板發展一套新的加工製程，以改善其撓曲能力。主要重點在於改良塑膠基板間的間隙物(spacer)製程，增強其抵抗外力所造成的形變，維持原有面板間隙值，以保證原光學顯示品質及耐用性，並加入二氧化矽改善間隙物(spacer)的機械特性。
本研究是利用激光雕刻和熱壓印成形技術形成微米級間隙物。由紫外線光引發劑含量，塗佈速度，熱壓壓力，二氧化矽的含量對微米級間隙物的影響進行研究。結果發現，紫外線光引發劑含量為3.0 wt％時，得到了最理想紫外光固化條件，並通過增加二氧化矽影響力學性能(提升其耐磨,抗刮,硬度,抗張強度及撞擊強度)。增加旋轉塗佈速度可以提高間隙物材料的透光率，由74％提升至85％。並且當熱壓壓力為250 psi時試樣的透光率可達到89％。從掃描式電子顯微鏡分析得知，增加旋轉塗佈速度時，可以將間隙物材料的塗層厚度從13.1 ± 0.3 μm降到2.5 ± 0.4 μm。從2D掃描功能表面形貌量測儀分析，間隙物之平均高度可達到6.2 ± 0.3 μm。此外，可撓性面板之微米級間隙物具有良好的應力抗性和撓曲性。在本研究中，這種新製程不僅改善了可撓性面板的液晶盒之間距，也擁有光電顯示能力。

關鍵字

間隙物 ； 軟性面板 ； 二氧化矽 ； 液晶

並列摘要

In this study, we developed a new process of to improve their flexibility by UV carving and hot-embossing forming technology. The main purpose was improving the plastics substrate manufacture and impact its stress resistance in order to maintain the value of spacer gap, which can keep original optical property and durability, and improving the mechanical property by adding silicon dioxide.
The purpose of this research is to develop a new process for flexible panel by laser carving and hot-embossing forming technology, which make a micro-structured spacer. Influences of UV-photoinitiator content, spin-coating speed, molding pressure, and silicon dioxide content on the micro-structured spacer of flexible panel were studied. Results showed that UV-photoinitiator content of 3.0 wt% in spacer material got the optimum UV-curing condition and the mechanical property of it was increased by adding of silicon dioxide.
The transmittance of spacer material by increasing of spin-coating speed increased from 74 % to 85 % and then the transmittance of it in molding pressure of 250 psi achieved 89 %. From SEM analysis, the coating thickness of spacer material by increasing of spin-coating speed decreased from 13.1 ± 0.3 μm to 2.5 ± 0.4 μm. From stylus profiler analysis, the average spacer height achieved 6.2 ± 0.3 μm. Besides, the micro-structured spacer of flexible panel possessed good stress-resistance and flexibility. In this research, this new process not only got a great improvement the cell gap of micro-structured spacer in the flexible panel, but possessed electro-optical display ability.

並列關鍵字

Spacer ； Flexible panel ； Silicon dioxide ； Liquid crystal

參考文獻

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