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Dissertations / Theses on the topic 'Light emitting diode panel'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Stevenson, Stuart G. "Dendrimer light-emitting diodes." Thesis, St Andrews, 2008. http://hdl.handle.net/10023/581.

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Leung, Kit Yee. "Single-panel sequential-color LCOS projectors using LED lamps /." View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?ECED%202008%20LEUNG.

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Fischer, Axel, Thomas Koprucki, Annegret Glitzky, et al. "OLEDs: Light-emitting thin film thermistors revealing advanced selfheating effects." SPIE, 2015. https://tud.qucosa.de/id/qucosa%3A35054.

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Large area OLEDs show pronounced Joule self-heating at high brightness. This heating induces brightness inhomogeneities, drastically increasing beyond a certain current level. We discuss this behavior considering 'S'-shaped negative differential resistance upon self-heating, even allowing for 'switched-back' regions where the luminance finally decreases (Fischer et al., Adv. Funct. Mater. 2014, 24, 3367). By using a multi-physics simulation the device characteristics can be modeled, resulting in a comprehensive understanding of the problem. Here, we present results for an OLED lighting panel c

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Дядечко, Алла Миколаївна, Алла Николаевна Дядечко, Alla Mykolaivna Diadechko, and D. V. Shapko. "Organic light-emitting diode." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/13445.

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An organic light emitting diode (OLED) is a light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compounds which emit light in response to an electric current. This layer of organic semiconductor material is situated between two electrodes. Generally, at least one of these electrodes is transparent. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/13445

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5

Leirset, Erlend. "Photonic crystal light emitting diode." Thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10014.

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<p>This master's thesis describe electromagnetic simulations of a gallium antimonide (GaSb) light emitting diode, LED. A problem for such devices is that most of the generated light is reflected from the surface due to total internal reflection, and is therefore prevented from coupling out of the semiconductor material. Etching out a 2D photonic crystal grating on the LED surface would put aside the absolute rule of total internal reflection, and could therefore be used to increase the total transmission. The simulation method which was developed was supposed to find geometry parameters for th

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Lau, Kwok Hing Connie. "Stacked organic light emitting diode." HKBU Institutional Repository, 2008. http://repository.hkbu.edu.hk/etd_ra/916.

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Guan, Nan. "Nitride nanowire light-emitting diode." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS372/document.

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Les nanofils nitrures présentent des propriétés optoélectroniques extraordinaires et sont considérés comme des matériaux prometteurs pour des diodes électroluminescentes (LEDs), grâce à leur haute qualité cristalline, leurs surfaces non-polaires, leur bonne flexibilité mécanique, leur rapport d’aspect élevé, etc.Cette thèse adresse la croissance, la fabrication, les caractérisations optiques et électriques et la simulation optique des dispositifs à base de nanofils nitrures, avec un accent particulier sur les LEDs à nanofils.Premièrement, cette thèse présente la croissance par épitaxie en phas

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Hood, Sean. "Light emitting diode color rendition properties." Kansas State University, 2013. http://hdl.handle.net/2097/15647.

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Master of Science<br>Department of Architectural Engineering and Construction Science<br>Fred Hasler<br>This paper discusses the color rendition capabilities of light emitting diodes (LEDs) and their relationship with the current standard for color rendition quality. The current standard for judging light source color rendering properties, known as the color rendering index (CRI), has come under heavy scrutiny in recent years with the introduction of LED in commercial lighting applications. LEDs, depending on construction type, have highly structured spectral distributions which do not scale w

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Ferreira, Ricardo Xavier da Graça. "Gallium nitride light-emitting diode enabled visible light communications." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28805.

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This thesis focuses on the development, measurement and application of novel micrometre-sized light emitting diodes (micro-LEDs) based on Gallium Nitride (GaN) for visible light communications (VLC) in both free-space and guided wave configurations. The goal is to set benchmarks for LED-based wireless optical communications. An overview of the field integrating research, industry and standards is presented. A top-down approach is taken with application requirements driving development of new micro-LEDs with simultaneously increased optical power and modulation bandwidth. This was achieved by m

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Ng, Wai-nap, and 吳卉納. "Micro-and nano-light-emitting diode arrays." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B4088787X.

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Башлак, Ірина Анатоліївна, Ирина Анатольевна Башлак, Iryna Anatoliivna Bashlak, and D. Y. Panasiuk. "Organic light emitting diode technology in brief." Thesis, Вид-во СумДУ, 2009. http://essuir.sumdu.edu.ua/handle/123456789/16798.

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Ng, Wai-nap. "Micro-and nano-light-emitting diode arrays." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B4088787X.

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13

Lai, Yin Hing. "High power flip-chip light emitting diode /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202004%20LAI.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004.<br>Includes bibliographical references (leaves 60-68). Also available in electronic version. Access restricted to campus users.

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Khan, Mansoor Ali. "Atomic-Scale Insights into Light Emitting Diode." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/18594.

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In solid-state lightning, GaN-based vertical LED technology has attracted tremendous attention because its luminous efficacy has surpassed the traditional lightning technologies, even the 2014 Nobel Prize in Physics was awarded for the invention of efficient blue LEDs, which enabled eco-friendly and energy-saving white lighting sources. Despite today’s GaN-based blue VLEDs can produce IQE of 90% and EQE of 70-80%, still there exist a major challenge of efficiency droop. Nonetheless, state-of-the-art material characterization and failure analysis tools are inevitable to address that issue. In

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Li, Zonglin, and 李宗林. "Reliability study of InGaN/GaN light-emitting diode." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43224155.

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Li, Zonglin. "Reliability study of InGaN/GaN light-emitting diode." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43224155.

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Deram, Paul. "Light-emitting-diode (LED) lighting for greenhouse tomato production." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=116996.

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The cost of artificial lighting is a major expense in the greenhouse production industry, especially during the winter where supplemental lighting is required to maintain production. Current technology uses broad spectrum high pressure sodium lamps (HPS), which, despite being excellent luminous sources, are not the most efficient light source for plant production. Specific light frequencies have been shown to impact photosynthesis more directly than others (especially in the red and blue ranges); focusing on specific wavelengths, light-emitting diodes (LEDs) could diminish lighting costs due

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18

Gunning, Jack Peter. "Poly(dendrimer)s for organic light emitting diode displays." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509953.

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Zhao, Xinyue M. Eng Massachusetts Institute of Technology. "Commercialization of Quantum Dot White Light Emitting Diode technology." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/37678.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2006.<br>Includes bibliographical references.<br>It is well known that the use of high-brightness LEDs for illumination has the potential to substitute conventional lighting and revolutionize the lighting industry over the next 10 to 20 years. However, successful penetration of this extremely large lighting market would require vast improvements in power conversion efficiencies, color index, light output per device and drastic reduction in cost. Quantum Dot white LED (QD WLED) technology may be

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Soon, Chian Myau. "White light emitting diode as liquid crystal display backlight." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42159.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2007.<br>Includes bibliographical references.<br>The discovery of high brightness (white) light emitting diode (LED) is considered as a real threat to the current lighting industry in various applications. One of the most promising sectors would be using white LED to replace the current Cold Cathode Fluorescent Light (CCFL) technology as the backlight of the large screen Liquid Crystal Display (LCD) screen due to the fact that LCD is a rapidly booming market.<br>by Chian Myau Soon.<br>M.Eng.

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Salter, Cameron Lewis. "Development and application of an entangled-light-emitting diode." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610428.

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WangShung-Hsi and 王舜熙. "Study and Promotion of Organic Light-Emitting Diode Lighting Panel." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/08523805198374663917.

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碩士<br>崑山科技大學<br>電機工程研究所<br>94<br>In this thesis two kinds of emitting area for organic light emitting diodes (OLEDs) were fabricated, which are 0.6 x 0.6 and 5.5 x 5.5 cm2, respectively. At first, the optimum thickness of each organic layer was adjusted in the small scale device. Then the same structure was copied to fabricate the large scale device. In the experiments, UV-Ozone and O2 plasma as pretreatment were utilized to clean the ITO surface, respectively. The pretreatment period was adjusted. It was found that the pretreatment with O2 plasma for 90 seconds was the best condition to obtai

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Chen, Ming-Lung, and 陳明倫. "Design and Fabrication of Array Light-Enhanced Layer for Organic Light-Emitting Diode Panel." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/13729977815586798466.

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碩士<br>國立交通大學<br>電機學院光電顯示科技產業專班<br>94<br>An array light-enhanced layer with the shape of pyramidal array (pyramidal ALEL) has been designed to increase the out-coupling efficiency of organic light-emitting diode (OLED) panel. To optimize the profile of ALEL, Fresnel reflection effect was considered for the geometric ray tracing and the variables of the pixel spacing, the height and the tilt angle of pyramid were investigated. The simulation results showed that an OLED panel with the optimized pyramided ALEL yielded a gain factor of 1.7. ALEL is fabricated by the typical semiconductor fabricatio

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Lu, Cheng-hua, and 呂振華. "Analysis of Business Performance Evaluation Model using Panel Data Approach –Illustrated by Light Emitting Diode(LED) Industry." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/44606270664848541165.

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碩士<br>朝陽科技大學<br>財務金融系碩士班<br>99<br>In this paper, application Panel Data to analysis operating performance of energy-saving industry in Taiwan that for example Light Emitting Diode industry. Against eight companies of light-emitting diodes industry for the study that has been listed cabinets in Taiwan, sampling period of total 32 quarter from 2003 to 2010. Use the "Financial Five Forces" (Shi, 2001 and Wang, 2006) analysis to measure the problems of business operate, corporate profitability, credit, turnover activities, growth, and productivity between input and output. In addition to using

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Chen, Sheng-Lung, and 陳勝龍. "Strategy for Panel Makers in Taiwan Facing Display Technical Change： A Case Study of Active Matrix Organic Light Emitting Diode." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/2wfj6h.

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碩士<br>國立臺灣科技大學<br>工業管理系<br>105<br>Since 2008, the panel Makers in South Koera have continued investment on research and development of AMOLED technology regardless of many other countries. In particular, Samsung has even reached the golden cross point where the panel cost of 5.5 inche with AMOLED and TFT-LCD became the same. This was the major breakthrough the display technology was monopolized long time by TFT-LCD in the past and has also shocked the display market to bring many countries starting to follow the trend and announce the AMOLED investment plans since then. However, AMOLED technol

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Juan, Chang-Jung, and 阮張榮. "Study of the Compensation Circuits and fast measurement for Organic Light Emitting Diode Panels." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/s9u8mn.

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博士<br>國立臺灣科技大學<br>自動化及控制研究所<br>94<br>Abstract Nowadays, flat panel displays (FPD) almost dominate the information display market as their superior property of dimension. Liquid Crystal Display (LCD), Plasma Display Panel (PDP), and Organic Light Emitting Diodes (OLED) are FPD technologies. Wide of view-angle, quick response of the photoelectrical, self-emission, thin of thickness and low power consumption are the most attractive characteristics of OLED panels that can overcome drawbacks of LCD and PDP. Therefore, OLED panels could be dominated FPD market in the next decade. However, some produ

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Huang, Pei-Kai, and 黃培凱. "The Low Power-Consumption Design and Chip-Integration of Passive-Matrix Driving Circuit for Organic Light Emitting Diode (OLED) Display Panel." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/41192389377988532978.

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碩士<br>義守大學<br>電子工程學系<br>92<br>Conventional organic light emitting diode (OLED) display panels employ passive-matrix (PM) driving circuit due to its simplicity in design and low production cost.However, in order to surpass traditional LCD display in the near future further reduction of power consumption in PMOLED driving circuits is essential. This thesis employs a mixed-signals integrated design method to program PMOLED driving circuit system with constant current driving method to solve the non-uniform picture quality problems encumbered in the constant voltage driving method. We p

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Hung, Ying-Tsung, and 洪瑛聰. "The study of fabricating of the back-light panel by the stripe electrode in organic light-emitting diodes." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/t4bg72.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>93<br>The study is to discuss the comparison of stripe organic light panel and the gap between ITO stripe anodes, and the influence of the light and efficiency from organic light components. The components of the biggest pitch from ITO anode gap 400um and the smallest 30um, under the highest light 10V and electric current density, are 530cd/m2(40.1mA/cm2) and 639cd/m2(71.3mA/cm2), respectively. It is found from the experiment result that the smaller ITO anode gap, the higher electric current density of the components, and the light appeared a linear ratio relati

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Gau, Huan-Jie, and 高煥捷. "Blue Phosphorescent Organic Light-Emitting Diode and Alternating Driven Current Organic Light-Emitting Diode." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/r2we9f.

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碩士<br>元智大學<br>光電工程學系<br>104<br>In this thesis, the first part is disclosed a series of novel host materials combining hole-transporting moiety, Carbazole, and electron-transporting moieties Triazole and Pyridine, as bipolar host to fabricate high efficiency blue phosphorescence organic light-emitting diode (OLED) with the blue phosphorescent emitting dopant, FIrpic. Second part is the development of an alternating current (AC)-driven organic light emitting diodes (OLED). We co-depositied these materials to modulate their energy level. We designed a symmetrical device structure, to achieve the

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Peng, Sheng-yang, and 彭聖揚. "Multifunctional white light emitting diode." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/79934244374666129071.

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碩士<br>國立臺灣科技大學<br>光電工程研究所<br>100<br>The objective of this thesis to increase the functionality of white light emitting diode (WLED) use the multi-chips structure, modified omni-directional reflector (ODR) and TiO2 photocatalyst to package the WLED which has functionality of the tunable color garmut and air purification. The modified ODR has been improved according to the previous research, which property is that when light incident angle is 40°, the wavelength of 380 nm of transmittance is 40%. Because TiO2 photocatalyst have to be under the UV light emitting and TiO2 photocatalyst can be used

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Lin, Yu-Tang, and 林育瑭. "White Organic Light Emitting Diode." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/vpyk74.

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碩士<br>中原大學<br>物理研究所<br>106<br>This work focusing on the realization of white organic light-emitting diodes by mixing blue and yellow-orange light. The Bis[2-(4,6-difluorophenyl)pyridinato-C2,N](picolinato)iridium(III) (FIrpic) with emission peak at about 490 nm and the LY220 with emission peak at about 600 nm were blended with the host polymer to realize the white light emission. The influences of blending ratio, emissive layer thickness, and annealing temperature on the device performance were investigated. The influence of the thickness LiF on the device performance were also investigated.

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Hsieh, Chun-Yu, and 謝濬宇. "Candle Light-Style Organic Light Emitting Diode." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/50845307637013042446.

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吳日中. "Organic Light-Emitting Diode Based Artificial Dusk-Light." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/31730494468755683827.

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Chang, Chin-Yeh, and 張勤業. "Contact-Printed Organic Light-Emitting Diode." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/14279122240202644377.

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chu-shin, Liang, and 梁竹欣. "Al2O3-Superlattice Light-Emitting Tunnel Diode." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/50684681770027768580.

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碩士<br>國立交通大學<br>電子工程系<br>89<br>An ITO/superlattice/p-Si tunnel diode used as a light-emitting device was made on the Si substrate. The superlattice (SL) is formed by alternatively depositing ITO and Al2O3 materials, and the thickness of each SL layer is in the range of 10~20Å. At a forward bias -3V, strong and uniform electroluminescence (EL) from SL tunnel diode is detected, and the emitted light is mainly located in the infrared region. The light intensity from SL tunnel diode is three orders of magnitude larger than hot-carrier induced light emission in MOSFETs, and near 10000 greater than

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Chang, Chuan-Ming, and 章絹明. "The ZnSe Light Emitting Diode Process." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/23827058288946107273.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>93<br>In this thesis, We study ZnSe white Light Emitter Diode. We focus two topics. One is self-emitting white LED. Another one is phosphors effective with ZnSe LED. 　The self-emitting ZnSe white LED we study two types model. One is normal type p-side up. Another is N-side up. The same wafer Used different process we can get more light efficiency and change CIE . 　The ZnSe white LED used phosphors can easily change CIE . The CIE X from 0.3 to 0.45, Y from 0.28 to 0.4, the ZnSe LED color can be change from bluish to golden.

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Hsu, Hao-Chun, and 徐浩淳. "Study on light extraction of organic light-emitting diode." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/bnk32k.

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碩士<br>國立臺灣大學<br>光電工程學研究所<br>106<br>In this thesis, we study on light extraction of organic light-emitting device (OLED) with nanostructures. There are two part in the thesis. The first one is varying the pitch of nanostructured for the OLEDs. And the second is varying the electron transport layer (ETL) thickness of the nanostructured OLEDs. In chapter 3, we use gratings with three different pitches (833.33, 416.67, 277.78 nm) to fabricate nanostructured OLED. With macrolens and 416.67-nm pitch nanostructure, 103.02% external quantum efficiency (EQE) enhancement can be obtained. With polarizer

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Chuang, Yu-Cheng, and 莊又澄. "Interface Characteristics Of Green Light Organic Light Emitting Diode." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/tc85a4.

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碩士<br>國立中興大學<br>物理學系所<br>106<br>Organic light emitting diode (OLED) is one of the main display technologies. Compared with LCD displays, it has advantages of self-illumination, wide viewing angle, high contrast, low power consumption, high response rate, full color and simple process. OLED is also used as a light source for warning lights on automobiles, which is a technology that has considerable business potential and high research value. In this study, first, Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) were used to observe the surface morphology, surface roughn

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Lin, Yan-De, and 林彥德. "The development of GaAs Red Light Emitting Diode and 960×540 GaAs-based Micro Light Emitting Diode Array." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/egznk2.

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Chung, Chao-Chi, and 鍾超己. "Anelasticity study in GaN Light-emitting Diode." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/66796759266305880518.

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博士<br>國立中央大學<br>化學工程與材料工程學系<br>105<br>Defects decline the light output efficient and life time of GaN-based LED. In our study, as the defect density of device is 2.17×10-9 cm-2, 3.636×10-9 cm-2, 4.654×10-9 cm-2, respectively, the external quantum efficient is 20.546 %, 19.563%, 16.785%, respectively. To establish a high accuracy and convenient defect measuring system is necessary. However, the defect measuring methods that commonly used have many limits. For example, XRD spectrum is only suitable for wafer size sample. TEM and EPD evaluating method are destructive measurement that waste m

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Yang, Y. K., and 楊延鍇. "AlGaInP Light Emitting Diode Junction Temperature study." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/20239708469798222678.

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碩士<br>長庚大學<br>光電工程研究所<br>94<br>There are two generally and accurately method to measure junction temperature. These two methods are called emission peak wavelength shift method and diode forward-voltage method. The defect of these methods is that the junction temperature measurements are strongly depend on the device structures above the substrate. The influence of structures induced deviation and incommodity when measured junction temperature. This work discussed with using photoluminescence spectra of GaAs substrate excited by active layer. According to Varshni equation and the red shift of

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Lee, Chia-Ming, and 李家銘. "Investigation of InGaN/GaN Light Emitting Diode." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/18152097049547423378.

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博士<br>國立中央大學<br>電機工程研究所<br>92<br>This dissertation includes the growth, fabrication, and characterization of Mg-doped GaN and InGaN/GaN multiple-quantum-well (MQW) light-emitting diode (LED) by metalorganic chemical vapor deposition (MOCVD). First, we utilized Hall measurement, photoluminescence (PL), and second ion mass spectrum (SIMS) to characterize p-type GaN and Mg distribution in GaN films. Although the Mg flow is constant during growth, the measurement data shows that the Mg concentration increases with growth time since the Mg concentration is higher when closer to the surface. Even wh

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Liu, Yu-Chuan, and 劉育全. "Investigation of InGaN/GaN Light Emitting Diode." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/79969050495085222285.

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碩士<br>國立中央大學<br>電機工程研究所<br>92<br>A light-emitting device comprises a multi-layer structure including one or more active layer configured to irradiate light in response to the application of an electric signal, a transparent passivation layer laid over an outmost surface of the multi-layer stack, a reflector layer laid over the passivation layer, and a plurality of electrode pads coupled with the multi-layer structure. In a manufacture process of the light-emitting device, the reflector layer and the passivation layer are patterned to form at least one opening exposing an area of the multi-lay

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Chen, Ming-Sheng, and 陳銘勝. "Process of GaN-based Light-emitting Diode." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/49245573361857716249.

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Yun-Hsuan, Hsu, and 許勻亘. "The study of light emitting diode properties." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/qnh466.

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碩士<br>國立高雄應用科技大學<br>電子工程系碩士班<br>102<br>Light emitting diodes （LEDs） have been rapidly developed and widely applied to our livelihood and other special applications, according to their high efficiency, small size, lower power consumption and long lifetime. In order to study the characteristics of LEDs, this work applies the first-principle theory as implemented in the CASTEP code to study new IV-group illuminating material, and applies the APSYS code to simulate the N-base LED characteristics. First, the density functional theory （DFT） is applied to study the energy gaps of GeSn alloy. The c

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Tsai, Chia-Lin, and 蔡佳霖. "Studies of White Polymer Light Emitting Diode." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/40661757859748513563.

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碩士<br>國立清華大學<br>化學工程學系<br>97<br>This study involves polyspirofluorenes (sPF) modified by incorporation of charge transporting moieties on side-chain and chain-end to facilitate hole and electron injections. We investigate their electroluminescence behaviors with and without doping with orange fluorescent and red phosphor small molecules as the guest to obtain white and red emission devices. Three parts are included in this thesis. Firstly, by incorporation of triphenylamine (as hole receiver) and carbazole (as transporting bridge) as side-chain of sPF to yield TPA-Cz-sPF, balanced bipolar flux

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Chen, Wen-Yan, and 陳文彥. "Study of White Light Emitting Diode Package." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/03090168878464220794.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>96<br>White light emitting diodes (LEDs) are attractive for using as an illumination light source. Phosphor-converted white light LEDs, fabricated by near ultraviolate (UV) LED chips, have many advantages such as high color rendering index (CRI), and near true white chromaticity coordinates. However, the drawbacks of the white light LEDs are low luminous efficiency and instability of packaging materials. White light LED fabricated by two layers packaging structure was demonstrated. The requirements of lighting source such as correlated color temperature, average colo

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Chen, Yu-Qiu, and 陳昱酋. "InGaN / GaN Light Emitting Diode Polarization Analysis." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/14783776738955605854.

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碩士<br>國立宜蘭大學<br>電子工程學系碩士班<br>102<br>In these studies, the state-of-the-art two-dimensional device simulation tool, ATLAS, from SILVACO is being evaluated for the purpose of studying light-emitting diodes (LEDs). It predicts the electron behavior of specified semiconductor structures, and provides insight into the internal physical mechanisms associated with device operation. We designed the active layer area is 300 μm 300 μm for blue InGaN/GaN multiple-quantum well (MQW) light-emitting diodes, using the SILVACO ATLAS tool, the two-dimensional device simulation package ATLAS was used to theor

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Chuang, Ching-han, and 莊景涵. "Fabrication of Resonant-Cavity Light-emitting Diode." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/15126301381763027165.

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碩士<br>國立臺灣大學<br>電子工程學研究所<br>91<br>This thesis presents the fabrication and optoelectronic properties of 870nm resonant-cavity light-emitting diodes (RCLED). The device structure of the RCLED is composed of a 30-pair AlGaAs bottom DBR reflector, a 1-λ cavity with 3 InGaAs quantum wells embedded on its center, an AlGaAs top DBR reflector, and a 5-μm-thick AlGaAs window layer. The window layer is used to avoid the current crowding effect at high current density. Devices with different upper DBR pair and with window layer removed were fabricated and compared. The device with 3 pairs DBR reflecto

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Huang, Hao-Hsuan, and 黃浩軒. "Recycling of Waste Light-Emitting Diode Backlight." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/96163544543562814159.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>103<br>The main purpose of this research is to analyze the composition and to study the recovery of valuable metals of light-emitting diode backlight of waste liquid crystal display. The result of research shows that LED backlight obtained from waste LCD screen accounts for 0.15% of the total weight of the LCD. Rare earth metals gallium (Ga), europium (Eu), yttrium (Y) and cerium were all present in the LED backlight with a concentration of 738.43mg/kg, 63.76mg/kg, 18.43mg/kg and 8.89mg/kg, respectively. 63.14% of a size -100 mesh sample was obtained after the collec

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