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DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 林晃巖 | zh_TW |
dc.contributor.advisor | Hoang-Yan Lin | en |
dc.contributor.author | 林珈慶 | zh_TW |
dc.contributor.author | Chia-Ching Lin | en |
dc.date.accessioned | 2023-11-28T16:08:28Z | - |
dc.date.available | 2023-11-29 | - |
dc.date.copyright | 2023-11-28 | - |
dc.date.issued | 2023 | - |
dc.date.submitted | 2023-11-15 | - |
dc.identifier.citation | 1. Huang, Y., et al., Mini-LED, Micro-LED and OLED displays: present status and future perspectives. Light: Science & Applications, 2020. 9(1): p. 105.
2. Wu, T., et al., Mini-LED and micro-LED: promising candidates for the next generation display technology. Applied Sciences, 2018. 8(9): p. 1557. 3. Zhang, S., et al., Research Progress of Micro-LED Display Technology. Crystals, 2023. 13(7): p. 1001. 4. 張宏毅. 先進顯示技術發展動態. 2022 2022/06/22; Available from: https://www.moea.gov.tw/MNS/doit/industrytech/IndustryTech.aspx?menu_id=13545&it_id=427. 5. semiconductor, R. What are LEDs and How Do They Work? ; Available from: https://www.rohm.com/electronics-basics/leds/what-are-leds. 6. Hong, G., et al., A Brief History of OLEDs—Emitter Development and Industry Milestones. Advanced Materials, 2021. 33(9): p. 2005630. 7. Anwar, A.R., et al., Recent Progress in Micro-LED-Based Display Technologies. Laser & Photonics Reviews, 2022. 16(6): p. 2100427. 8. Lee, V.W., N. Twu, and I. Kymissis, Micro-LED Technologies and Applications. Information Display, 2016. 32(6): p. 16-23. 9. Lee, T.-X., et al., Light extraction analysis of GaN-based light-emitting diodes with surface texture and/or patterned substrate. Optics Express, 2007. 15(11): p. 6670-6676. 10. Forrest, S.R., D.D.C. Bradley, and M.E. Thompson, Measuring the Efficiency of Organic Light-Emitting Devices. Advanced Materials, 2003. 15(13): p. 1043-1048. 11. Schubert, E.F. and T. Gessmann, Light Emitting Diodes, in Encyclopedia of Condensed Matter Physics, F. Bassani, G.L. Liedl, and P. Wyder, Editors. 2005, Elsevier: Oxford. p. 102-111. 12. Saxena, K., V.K. Jain, and D.S. Mehta, A review on the light extraction techniques in organic electroluminescent devices. Optical Materials, 2009. 32(1): p. 221-233. 13. Seetzen, H., et al., High dynamic range display systems. ACM Trans. Graph., 2004. 23(3): p. 760–768. 14. Fundamentals of Liquid Crystal Devices. 2014. 15. hecht, E., OPTICS. fifth ed. 16. 維基百科,自由的百科全書. Snell's law. Available from: https://en.wikipedia.org/wiki/Snell%27s_law. 17. 維基百科,自由的百科全書. Critical angle. Available from: https://en.wikipedia.org/wiki/Total_internal_reflection#Critical_angle. 18. 維基百科,自由的百科全書. Ray tracing. Available from: https://en.wikipedia.org/wiki/Ray_tracing_(graphics). 19. Shirley, P. and R.K. Morley, Realistic Ray Tracing, Second Edition. 2008: Taylor & Francis. 20. Hofmann, G.R., Who invented ray tracing? The Visual Computer, 1990. 6(3): p. 120-124. 21. Kim, J.K., et al., Strongly Enhanced Phosphor Efficiency in GaInN White Light-Emitting Diodes Using Remote Phosphor Configuration and Diffuse Reflector Cup. Japanese Journal of Applied Physics, 2005. 44(5L): p. L649. 22. 陳奕均, 新穎有機發光元件光萃結構之光學模型與分析設計研究, in 臺灣大學光電工程學研究所學位論文. 2018, National Taiwan University. 23. Woodgate, G.J. and J. Harrold, P-101: Micro-Optical Systems for Micro-LED Displays. SID Symposium Digest of Technical Papers, 2018. 49(1): p. 1559-1562. 24. Gou, F., et al. Tripling the Optical Efficiency of Color-Converted Micro-LED Displays with Funnel-Tube Array. Crystals, 2019. 9, DOI: 10.3390/cryst9010039. 25. 賴皓云, 提升micro LED 正向輝度與抗反射二次之光學結構設計, in 臺灣大學光電工程學研究所學位論文. 2022, National Taiwan University. 26. Daly, D., et al., The manufacture of microlenses by melting photoresist. Measurement Science and Technology, 1990. 1(8): p. 759. 27. Miura, N., et al., Out Coupling Efficiency Enhancement of Organic Light Emitting Devices with Novel Periodic Nanostructures using Nanoimprint Lithography. SID Symposium Digest of Technical Papers, 2006. 37(1): p. 946-949. 28. Sun, Y. and S.R. Forrest, Organic light emitting devices with enhanced outcoupling via microlenses fabricated by imprint lithography. Journal of Applied Physics, 2006. 100(7): p. 073106. 29. Wei, M.-K., et al., The influence of a microlens array on planar organic light-emitting devices. Journal of Micromechanics and Microengineering, 2006. 16(2): p. 368. 30. Wei, M.-K., et al., Efficiency improvement and spectral shift of an organic light-emitting device by attaching a hexagon-based microlens array. Journal of Optics A: Pure and Applied Optics, 2008. 10(5): p. 055302. 31. Ishii, Y., et al., Ink-Jet Fabrication of Polymer Microlens for Optical-I/O Chip Packaging. Japanese Journal of Applied Physics, 2000. 39(3S): p. 1490. 32. Peng, H.J., et al., Coupling Efficiency Enhancement of Organic Light Emitting Devices with Refractive Microlens Array on High Index Glass Substrate. SID Symposium Digest of Technical Papers, 2004. 35(1): p. 158-161. 33. Yuan, W., et al., Fabrication of Microlens Array and Its Application: A Review. Chinese Journal of Mechanical Engineering, 2018. 31(1): p. 16. 34. Hu, Y., et al., Cost-efficient and flexible fabrication of rectangular-shaped microlens arrays with controllable aspect ratio and spherical morphology. Applied Surface Science, 2014. 292: p. 285-290. 35. 江正仁, 應用於有機顯示器具高正向亮度且消除模糊效應之微梯形陣列結構膜設計, in 臺灣大學光電工程學研究所學位論文. 2012, National Taiwan University. 36. Lin, H.Y., et al., Luminance and image quality analysis of an organic electroluminescent panel with a patterned microlens array attachment. Journal of Optics, 2010. 12(8): p. 085502. 37. 郭令儀, 具有黑矩陣之有機發光二極體的效率提升之研究, in 臺灣大學光電工程學研究所學位論文. 2016, National Taiwan University. 38. 吳思潔, 微透鏡應用於微型發光二極體之研究, in 臺灣大學光電工程學研究所學位論文. 2022, National Taiwan University. 39. Chun-Che, M., et al. Improvement of power efficiency and reduction of blur effect in OLED with micro-lens array films by reducing substrate thickness. in Proc.SPIE. 2014. 40. Motoyama, Y., et al., High-efficiency OLED microdisplay with microlens array. Journal of the Society for Information Display, 2019. 27(6): p. 354-360. 41. Y., M. Camera: CIS Color Filter and Micro Lens Array Explained by VisEra. 2021; Available from: https://4sense.medium.com/camera-cis-color-filter-and-micro-lens-array-explained-by-visera-3e527761005a. 42. Zhou, X.T., et al., Design and fabrication of square micro-lens array for integral imaging 3D display. Optik, 2018. 157: p. 532-539. 43. Li, H., et al., Morphology-programmable self-aligned microlens array for light extraction via electrohydrodynamic printing. Organic Electronics, 2020. 87: p. 105969. 44. Synopsys. LightTools 照明設計軟體. Available from: https://www.synopsys.com/zh-tw/optical-solutions/lighttools.html. 45. Johansen, A.M., Monte Carlo Methods, in International Encyclopedia of Education (Third Edition), P. Peterson, E. Baker, and B. McGaw, Editors. 2010, Elsevier: Oxford. p. 296-303. | - |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/91182 | - |
dc.description.abstract | 在面板產業中,微型發光二極體(micro-LED、μLED)具有相當大的發展前景。LED結合LCD與OLED的優點,同時具有自發光、低延遲、高亮度、壽命長等優點,也同時可以達到高發光效率。隨著技術進步,LED逐漸微型化,在量產上的問題除了巨量轉移的良率和LED尺寸縮減上出現的側壁缺陷效應導致LED發光效率低落外,LED尺寸縮減同時也會使晶粒開始出現向下及側向出光,而這些非正向的出光在LED封裝後經過封裝層之間的界面及封裝層與空氣間的界面時,容易出現全反射及較大角度的折射,因而降低正向出光。
本篇論文目的是為降低micro-LED面板的環境光反射,同時降低此面板之正向輝度損耗。本設計在考慮製程可行性、且無需進行對組的情況下設計了兩層集光結構。第一次集光結構可依靠非等向性蝕刻及旋轉塗佈製作,而二次集光結構為微透鏡,可以更進一步匯聚光線,並可依靠等向性蝕刻製作。本設計利用光學模擬軟體LightTools®建立模型並以蒙地卡羅法進行光線追跡,從模擬結果可以發現此設計有達到降低環境光反射及降低正向輝度損耗之目的。 經過調整模型中各項參數,模型之總環境光反射最低可達4.80%,損耗最低至14.52%。 | zh_TW |
dc.description.abstract | Micro light-emitting diodes (micro-LEDs, μLEDs) have a promising future in the panel industry, combining the advantages of LCDs and OLEDs with the advantages of self-luminescence, short response time, high brightness, and long service life, as well as high luminous efficiency. As technology advances, LEDs are gradually miniaturized, and the challenges in mass production is to maintain a certain yield in mass transfer, and the low LED luminous efficiency causing by the sidewall defects effect on the single LED die while LED size reduce. After the LED is packed, these non-positive light outputs pass via the interfaces between the packaging layers and between the packaging layers and the air, are susceptible to total reflection and large angle refraction, which reduces the forward brightness.
The purpose of this paper is to reduce the ambient light reflection from micro-LED panels and to reduce the forward brightness loss of these panels. This design is a two-layer light-collecting structure with process feasibility and no need for alignment. The design relies on non-isotropic etching and spin coating for the first light collection structure to achieve light convergence, while the second collection structure is a micro-lens with isotropic etching for further light convergence. The design is modeled by LightTools® software and ray tracing performed by the Monte Carlo method. The simulation results show that the design can reduce the reflection of ambient light and the loss of forward brightness. After adjusting the parameters in the model, the total ambient light reflection is as low as 4.80% and the loss is as low as 14.52%. | en |
dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2023-11-28T16:08:28Z No. of bitstreams: 0 | en |
dc.description.provenance | Made available in DSpace on 2023-11-28T16:08:28Z (GMT). No. of bitstreams: 0 | en |
dc.description.tableofcontents | 致謝 I
摘要 II Abstract III 目錄 IV 圖目錄 VI 表目錄 VIII 第一章 緒論 1 1-1 研究背景 1 1-2 發光二極體 2 1-2-1 發光二極體 2 1-2-2 有機發光二極體 3 1-2-3 微型發光二極體 4 1-3 微型發光二極體應用及前景 5 1-4 研究動機與本文架構 6 第二章 理論及方法 7 2-1 效率 7 2-1-1 IQE、LEE與EQE 7 2-1-2 相對強度與光損 8 2-1-3 環境光反射率 9 2-2 幾何光學 9 2-2-1 司乃耳定律(Snell’s law) 9 2-2-2 菲涅耳方程式(Fresnel equations) 10 2-2-3 光線追跡法(Ray-tracing method)[18-22] 11 2-3 集光結構 12 2-3-1 反射杯 12 2-3-2 微透鏡陣列 12 第三章 設計概念及模型建立 16 3-1 出光區結構 16 3-1-1 六角形出光結構光路分析 16 3-1-2 透鏡光路分析 18 3-2 模型架構 19 3-3 材料折射率關係 20 3-4 系統模型之製作流程 21 3-5 模型建立及模型參數 22 第四章 結構設計參數與效率之關係 29 4-1 反射杯參數與效率之關係 30 4-2 梯形集光結構參數與效率之關係 32 4-2-1 梯形上緣寬度與效率之關係 32 4-2-2 梯形高度與效率之關係 35 4-3 微透鏡參數與效率之關係 36 4-3-1 透鏡頂點距梯形上緣高度與效率之關係 37 4-3-2 圓形透鏡與效率之關係 38 第五章 結論與未來展望 42 5-1 結論 42 5-2 未來展望 43 參考文獻 44 | - |
dc.language.iso | zh_TW | - |
dc.title | 六角形集光結構及微透鏡應用於微型發光二極體高正向輝度及抗反射之研究 | zh_TW |
dc.title | Study of Hexagonal Structure and Micro-Lens with Anti-Reflection design improving micro-LEDs Normal Luminance | en |
dc.type | Thesis | - |
dc.date.schoolyear | 112-1 | - |
dc.description.degree | 碩士 | - |
dc.contributor.oralexamcommittee | 李君浩;黃宇薪;陳奕均 | zh_TW |
dc.contributor.oralexamcommittee | Jiun-Haw Lee;Yu-Hsin Huang;Yi-Jiun Chen | en |
dc.subject.keyword | 微透鏡陣列,微型發光二極體,六角形結構,效率提升,二次光學設計,環境光反射, | zh_TW |
dc.subject.keyword | microlens array,micro light-emitting diode,hexagonal structure,efficiency enhancement,secondary-optical design,ambient light reflection, | en |
dc.relation.page | 46 | - |
dc.identifier.doi | 10.6342/NTU202304421 | - |
dc.rights.note | 同意授權(限校園內公開) | - |
dc.date.accepted | 2023-11-16 | - |
dc.contributor.author-college | 電機資訊學院 | - |
dc.contributor.author-dept | 光電工程學研究所 | - |
顯示於系所單位: | 光電工程學研究所 |
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