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研究生:朱家德
研究生(外文):Jia-de Ju
論文名稱:物理吸附式微接觸印刷之墨水均勻度與其應用於高分子有機發光二極體之研究
論文名稱(外文):A Study on Inking Uniformity of a Physisorption Based Micro Contact Printing and Its Application to PLED Fabrication
指導教授:鄭榮偉
指導教授(外文):J. W. Cheng
學位類別:碩士
校院名稱:國立中正大學
系所名稱:機械工程所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2006
畢業學年度:94
語文別:英文
論文頁數:45
中文關鍵詞:微接觸印刷高分子有機發光二極體
外文關鍵詞:light emitting diodePLEDdisplaycontact printing
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有機高分子發光二極體平面顯示器因為其具有大面積製造與可彎曲的潛力而相當有機會成為下一代平面顯示器。我們發展出一種新的製程,以微接觸印刷為基礎的製程。此製程結合物理吸附式微接觸印刷和薄膜成長技術 (我們稱之為混合式微接觸印刷)。此方法在轉印薄膜與製造全彩顯示器之可行性方面已經在前幾年被我們研究小組證實,然而還有一些問題尚待解決。發光層印膜均勻度是主要問題,不均勻的發光層印膜將會導致發光時均勻度不佳的問題。
我們證明結合印章表面再流動技術與在其薄膜成長前預加一層預先濕潤層可以有效的改善其印膜均勻度問題。此方法成左滬鴞]我們認為是因為做完表面再流動可得到更均勻且更平滑的印章表面和利用預先濕潤層暫時性的增加印膜與印章的親合力。在應用於有機高分子發光二極體製程方面,我們可以將亮度操作於100 cd/m2而達到均勻度88.5% 的 +-10 cd/m2 之有機發光二極體。
Polymeric light-emitting diodes (PLEDs) are promising candidates for the next–generation displays because of their potential for large area fabrication and flexibility. A new fabrication method, a microcontact printing (mCP)-based approach, had been proposed by our group. It combines thin film coating and physisorption mCP (called the hybrid mCP). Possibility and the ink film transfer of the hybrid mCP for full-color PLED fabrication had been demonstrated in theses conducted by previous members of this group. However, there are still problems to be solved. The uniformity of printed ink film was the major problem. Non-uniformity of printed ink film was the cause for bad luminance uniformity in fabricated PLEDs.
We prove that the combined strategy of reflowing the surface of printing stamp and addition of a pre-wetting layer before inking the stamp is effective in improvement of the uniformity of the printed ink film. This success can be attributed to a better stamp with a smoother and homogenous surface after the reflowing and the better, short-term affinity between the stamp and the ink molecules offered by the pre-wetting layer. For PLED application, we are capable of making PLED diodes that achieves 88.5% luminance uniformity, i.e., +- 10cd/m2 at 100cd/m2.
Chapter 1. INTRODUTION 1
1-1 Introduction of Hybrid mCP 1
1-2 Introduction of Hybrid mCP 2
1-3 Motivation and Objective 3
1-4 Literature Review 5
1-4-1 Literature of Contact Printing for PLED Fabrication 5
1-4-2 Process Related Literature of Contact Printing 8
1-5 Approach 11
1-6 Contribution 12
1-7 Thesis Outline 12
Chapter 2. PROBLEMS AND POSSIBLE SOLUTIONS FOR INKING UNIFORMITY 13
2-1 Causes for non-uniform Inking 13
2-2 Possible Solutions 16
Chapter 3. EXPERMENTS, RESULTS, AND DISCUSSION 18
3-1 Experiment Overview 18
3-2 Results and Discussion 18
3-2-1 Experiment I: Reflow test 18
3-2-2 Experiment II: Pre-wetting test 22
3-2-3 Experiment III: PLED fabrication 28
Chapter 4. CONCLUSIONS AND FUTURE WORK 36
4-1 Conclusions 36
4-2 Future Work 36
REFERENCES 37
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[2]W. S. Huang, Development of new thermal assist contact printing with spin coating thickness control and its application to large area fabrication of PLEDs, 國立中正大學機械研究所碩士論文, 民93年
[3]W. C. Lin, Characterization of contact printing with spin coating-based thickness control and its associated PLED fabrication, 國立中正大學機械研究所碩士論文, 民94年
[4]Kumar, A and Whitesides, G. M., “Features of gold having micrometer to centimeter dimensions can be formed through a combination of stamping with an elastomeric stamp and an alkanethiol “ink” followed by chemical etching,” Appl. Phys. Lett., vol. 63, pp. 2002-2004, 1993
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[7]Z. Liang, K. Li, and Q. Wang, “Direct Patterning of Poly(p-phenylene vinylene) Thin Films Using Microcontact Printing”, Am. Chem. Soc., vol.19, No.14, 2003
[8]André Bernard, Dora Fitzli, Peter Sonderegger, Emmanuel Delamarche, Bruno Michel,Hans Rudolf Bosshard, and Hans Biebuyck, “Affinity capture of proteins from solution and their dissociation by contact printing”, nature biotechnology, vol. 19, p.866-p.869, 2001
[9]Thomas Granlund et al, “Patterning of Polymer Light-Eimiting Diodes with Soft Lithography,” Adv. Mater. 2000, 12, No. 4
[10]Koide, Y.; Wang, Q.; Cui, J.; Benson, D. D.; Marks, T. J.; “Patterned luminescence of organic light-emitting diodes by hot microcontact printing (HmCP) of self-assembled monolayers”, J. Am. Chem. Soc., 122(45); 11266-11267, 2000
[11]Mingtai Wang, Hans-Georg Braun, Thomas Kratzmüller, and Evelyn Meyer, “Patterning Polymers by Micro-Fluid-Contact Printing”, Adv. Mater. 2001, 13, No. 17
[12]F. Davard, D. Dupuis,” Flow visualisation experiments in a blade coating process”, J. Non-Newtonian Fluid Mech , Vol. 93, 17-28, 2000
[13]Jianyong Ouyang, Tzung-Fang Guo, Yang Yang, Hiroyuki Hikuchi, Masahiro Yoshioka, and Tatsuki Nakatsuki.“High Performance, Flexible Polymer Light Emitting Diodes Fabricated by a Continuous Polymer Coating Process”, Advanced Material, Vol. 14, No. 12, 2002
[14]Leslie Y. Yeo, Dmitri Lastochkin, Shau-Chun Wang, and Hsueh-Chia Chang, “A New ac Electrospray Mechanism by Maxwell-Wagner Polarization and Capillary Resonance”, Physical Review Letter, Vol. 92, No. 13
[15]李輝煌,田口方法 品質設計的原理與實務, 高立圖書出版社
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