臺灣博碩士論文加值系統

現今的導光板製造方式可分為印刷與非印刷製程技術，本研究應用噴墨製造技術來取代傳統製程技術，利用此技術來製作導光板下側所散布的微透鏡陣列結構，以達到降低成本與增加效率的生產優勢，本研究將針對十六比九，七吋導光板元件上做設計與製造。此導光結構能夠控制微透鏡曲率以及密度，驗證82%的均勻性與2477 nits的正向亮度。除此之外，ink-jet噴墨製程比起傳統列印技術，能夠節省超過50%的材料消耗，並保持其光學特性。

This research describes a simple and cost effective method to fabricate a UV-curable epoxy microlens array with controlled curvature and filling factor, by which we implemented a 7-inch 16:9 format light guide plate with 82% uniformity and 2477 nits of brightness. Compared with the conventional dot printing technology, ink-jet printing is able to save 50% material consumption without sacrifice of any optical performance. Proposed method has a promising impact in microstructure fabrication with other polymer materials due to its simplicity and versatility.

Table of Contents
利用噴墨技術製造導光板微透鏡結構 i
Applications of Microlens Array by Ink-Jet Technology for LCD Backlight System ii
Chapter 1 1
1.1 Overview 1
1.1.1 Liquid Crystal Displays 2
1.2 Backlight Module 3
1.2.1 Division of Backlight Module by Different Light Source Position 3
1.2.2 Main Parts of Backlight Module 4
1.3 Motivation and Objective 5
1.4 Organization of this thesis 6
Chapter 2 7
2.1 Ink-jet Printing System 7
2.1.1 Drop-on-demand Mode 8
2.1.2 Precision of Ink-jet Printer 9
2.1.3 Ejection Process 10
2.1.4 Droplet Landing 11
2.1.5 Spontaneous Inertial Spreading of Droplets 12
2.1.6 Coffee Ring Effect 12
2.1.7 The Marangoni Effect 14
2.1.8 Pattern Design 15
2.2 Radiometry and Photometry 16
2.2.1 Radiometry 16
2.2.2 Photometry 17
Chapter 3 20
3.1 Process Design and Schemes 20
3.2 Fabrication Process 21
3.2.1 Material and Substrate 21
3.2.2 Ink-jet printing System 24
3.3 Optical Design 27
3.3.1 Design Concept 27
3.3.2 Optical Simulation 29
Chapter 4 31
4.1 Experimental Result 31
4.1.1 Analysis of Microlens Array 31
4.2 Optical Measurement 34
4.2.1 Brightness and Uniformity 34
4.2.2 Yellowish Effect 36
Chapter 5 39
5.1 Conclusions 39
5.2 Future Work 39
5.3 Acknowledgements 40

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