bluuebunny/crossref_metadata_2025_split huggingface dataset:
P‐53: New TPS Function for Identifying Nano‐Scale Organic Film Phase in Large‐Size AMOLED Deposition Processes using Belt Source Evaporation Techniques
Authors: Hwang Chang Hun , Kim Yongki , Lee Tae Hee , Yu Sin Jae , Kim Sung Su , Kim Te Wan , Ju Sung‐Hoo 
Published: August 2007

AbstractNew TPS(Temperature Programmed Sublimation) technology has been developed in order to deploy to the belt source evaporation for large‐Size AMOLED deposition processes. When the organic film deposit on the metal plate, we have found it has nano‐scale film phase and bulk phase for the first time. The film phase of the Alq3 has 2,000Å for its saturated thickness and 155°C for its sublimation temperature. Also, there are no particles generated during plane source sublimation and TPS function as a powerful tool provides optimum thickness information for the AMOLED deposition processes.
P‐210: Ta‐Doped SnO2 Thin Films for PDP
Authors: Mihara Yu , Satoh Ryohei , Usui Reo , Morinaga Eiji , Iwata Yoshiharu 
Published: August 2007

AbstractSnO2 is considered to be a promising alternative material for indium tin oxide (ITO), which is used for transparent electrode in Flat Panel Display (FPD) and is facing a serious indium depletion problem. However, there are some problems such as high resistance, difficulty in processing, and low sintered density, which is necessary to sputtering. We investigated Ta‐X doped SnO2. Doping these elements enabled sintered density to rise and its specific resistance to decrease below 1.0×10−2Ω⋅cm after dielectric firing, it is low enough to apply to plasma display panel (PDP). Furthermore, the films which we formed were easy to process by YAG laser. Therefore, it is favorable material for transparent electrode of PDP.
P‐59: Dielectric Constants of Display Optical Components
Authors: Paukshto Michael , Lovetskiy Konstantin , Zhukov Andrey 
Published: August 2007

AbstractThe paper introduces novel software code for evaluation of dielectric tensor of biaxial layer incorporated into multilayer stack. The algorithm utilizes the reflectance and transmttance for several polarization states and angles of incidence in the case of Berreman approach or reflective and transmissive Mueller‐matrixes in the case of extended Jones method. We analyzed some common methods for characterization of LCD components by use of transmissive measurements.
P‐61: Turn‐Type Color 3‐D Display System Using Scanned Arrays of LEDs
Authors: Ito Akinori , Yamaguchi Takuni , Sakamoto Yasutada 
Published: August 2007

AbstractWe have successful developed a 3‐D (three‐dimensional) display system capable of displaying 3‐D images in real space. This 3‐D display system has been upgraded from its previous version described in our last report in term of the number of pixels and the number of display colors.
P‐62: Grating‐Based Optical Film for High‐Efficiency Backlights
Authors: Tokutaro Komatsu , Yasuhiko Awano , Mariko Toyama , Akihiro Yoshida , Shingo Kobayashi 
Published: August 2007

AbstractLCD backlights have to fulfill somewhat ambivalent requirements: high luminance and uniform emission. Utilizing the characteristics of diffraction gratings, we have developed micro‐patterned optical films which provide both highly collimated emission and good uniformity. The design strategies, optical characteristics and high‐precision patterning of the films are reported.
P‐63: Distinguished Student Poster: Effects of Glass Capacitance on the Performance of External Electrode Fluorescent Lamps
Authors: Shin Myeong‐Ju , Lee Mi‐Ran , Shin Sang‐Cho , Lee Min‐Kyu , Kang Mi‐Jo , Kim Jung‐Hyun , Jeong Jong‐Mun , Choi Eun‐Ha , Cho Guangsup , Kim Sung‐Jung , Kim Sung‐Hae , No Young‐Soo , Lee Young‐Chul , Fechner Joerg , Letz Martin , Song Young‐Shik , Ott Franz 
Published: August 2007

AbstractThe efficiency of EEFLs with the new glass tube of high dielectric constant K∼6.6 and low dielectric loss tan δ, reaches 45 lm/W which is ∼ 20 % higher than 38 lm/W in the conventional glasses of K ∼ 5.5. And this new glass tube EEFL also shows a high reliability against pinholes.
P‐64: Development of High‐efficiency Hg‐free Flat Fluorescent Lamp Through the Computational Experiments
Authors: Lee Seung Min , Seo Young Sik , You Shin Jae , Lee Jae Koo 
Published: August 2007

AbstractA study was conducted on the dependence of discharge efficiency upon discharge voltage, its spatial distribution, and distribution of electron beam injected in Ne‐Xe mixture discharge lamp through 2‐D fluid simulation and 1‐D particle‐in‐cell simulation combined with a fluid model, respectively. Based on the simple calculation from cross‐section and electron beam energy, the optimum energy of the injected electron beam for high efficient light source is about 14∼16eV in the case of pure Xe. The simulation results also show the similar characteristics to the estimated data in discharge efficiency.
P‐67: Region‐Partitioned LED Backlight Design for Field Sequential Color LCD
Authors: Chien Ming‐Chin , Tien Chung‐Hao , Chen Cho‐Chih , Lu Yen‐Hsing 
Published: August 2007

AbstractIn this paper, a 7‐inch backlight module consisting of ten isolated micro‐structured linear light pipes and two side‐collimating bars was developed with serial full‐color LEDs as light sources for a field‐sequential‐color liquid‐crystal display (FSC‐LCD) system. The collimating lighting system not only yields a narrow angular light distribution, but also effectively diminishes color dependence in the scanning backlight for FSC applications. The crosstalk of the light from each linear light pipe leaking out to the neighboring divisions was measured; meanwhile, the divergent angles of extraction light were well controlled to about ±17° and ±30° at two orthogonal directions respectively.
P‐68: Color‐Sequential TFT‐LCD with SAM (Shared Array Mask) Structure and Color breakup Reduction Schema
Authors: Kuan‐Hung Liu , Jhen‐Shen Liao , Yi‐Nan Chu , Wen‐Tse Tseng , Hong‐Tien Yu 
Published: August 2007

AbstractIn a Color‐Sequential display, the three primary colors — red, green, and blue (RGB) are rendered in a time‐multiplexed fashion. Input frame image is decomposed into RGB sub‐frames, which are displayed sequentially at very short intervals such that the human eye cannot perceive the timing difference and the observer will see the original color of the image. Chunghwa Picture Tubes, LTD. (CPT) has successfully developed the 7 inches Color‐Sequential TFT‐LCD module. The main features of CPT Color‐Sequential display module include 800×480 resolution, TTL digital interface, fast response time with Optically Compensated Bend Type, wider color gamut and high color expression characteristic using LED backlight illuminated by the red, green, and blue accordingly. Furthermore, our Color‐Sequential display module has SAM (Shared Array Mask) structure that the panel circuit layout same as the commercial TFT‐LCD product, where a pixel consists of three sub‐pixels, it only needs to change the module design when applying the SAM structure, the manufacturing prime cost is reduced directly. We also invent the novel driving method with color breakup reduction schema to drive the Color‐Sequential display. The schema we applied is the way to control the width percentage of LED enable signal that the intermediate white color is inserted among the RGB periods to lighten the color breakup defect.
P‐69: A Localized Partition Approach for High‐Dynamic‐Range Display
Authors: Lu Yen‐Hsing , Cheng Yu‐Kuo , Tien Chung‐Hao 
Published: August 2007

AbstractA mosaic‐form backlight system for high‐dynamic‐range display was introduced. The backlight unit consisting of a side‐emitting LED, a quadratic light guide, and a concentric prism sheet can form an isolated square super‐Gaussian distribution over the local area of liquid crystal panel. By means of our approach, high‐dynamic‐range display system can reduce the time required for processing compensated image signal.
P‐70: Additional Glass Element for Thinner LED Scanning Backlight
Authors: Vermersch Francois‐Julien , Schiavoni Michele , Mulet Jean‐Philippe 
Published: August 2007

AbstractIn order to reduce the thickness of usual LED backlights and to allow scanning mode while maintaining luminance level and uniformity, we propose a novel architecture including an additional element made of textured and coated glass diffuser plate. Total thickness with this new element ranges from 25 to 35 mm.
P‐71: Investigation of Optical Films Ripple Phenomenon in TFT‐LCD Module by Numerical Computing
Authors: Lin Mao‐Hsing , Chen Yung‐Kan , Kuo Wu‐Cheng , Huang Kun‐Feng 
Published: August 2007

AbstractMura is an appearance that indicates low contrast and nonuniform brightness in thin‐film transistor liquid‐ crystal display (TFT‐LCD) devices. It is kinds of optical defects, such as ripple, smear, Newton's rings and moiré, etc. This article primarily discusses ripple of optical films by using both experimental and numerical model to help understand how ripple occurs and why ripple seen by inspectors. After performing numerical analysis, we discover the root cause that induces ripple and realize why luminance on film‐wrinkled area is varied, finally conclude the parameters that control physical phenomenon.
P‐72: Light Recycling and Collimation Caused by Fresnel Reflection
Authors: Mi Xiang‐Dong 
Published: August 2007

AbstractThe impact of Fresnel's reflection from a clear optical film, a polarizer, and a reflective polarizer on light recycling in a variety of LCD backlight configurations is investigated. It is found that Fresnel's reflection plays an important role in on‐axis and off‐axis gain, and this reflection results in higher gain at an angle near Brewster's angle in a horizontal plane in the presence of a polarizer with its pass axis in the horizontal plane.
P‐75: Light Weight Backlight Module with Reflective Light Guide
Authors: Wang Hsiao‐Ting , Chen Cheng‐Huan , Chen Chung‐Feng 
Published: August 2007

AbstractA novel light guide fully composed of reflective plate has been proposed as a light weight solution for backlight module of side edge type. Accompanying with the optical films used in existing backlight module, the uniformity of the prototype with a size of half 14” has shown the feasibility and potential for large screen application.
P‐77: High‐Brightness Optical Film with Improved Cosmetic Appearance
Authors: Lee Junwon , Meissner Stephen C. , Sudol Ronald J. 
Published: August 2007

AbstractThis paper presents an optical film that enhances cosmetic appearance, as well as head‐on brightness, through two‐dimensional, light‐redirecting structures that have variable pitch. The optical film utilizes the analysis of Moiré appearance in spatial frequency space to optimize the arrangement of microstructures to improve the cosmetic appearance of displays. The optical film has an improved light‐collimating microstructure that sends light more effectively from a light guide plate, resulting in higher head‐on brightness. This paper shows the detail of the design procedure, but more importantly, it presents optical measurement results of actual optical film prototypes to confirm performance improvement.
P‐79: Light Leakage Improvement of LCD Module by Numerical Analysis
Authors: Chen Yung‐Kan , Lin Mao‐Hsing , Huang Kun‐Feng 
Published: August 2007

AbstractIn this paper, we discuss the light leakage issue of LCD panel occurred due to sharp temperature gradient and non‐uniform stress distribution. By using numerical analysis and experiments, the relationship between light leakage and temperature gradient has been discovered. Thermal and stress simulations are applied in the analysis of light leakage phenomenon. Besides, we use simulation tools to predict the effectiveness of solutions for reducing the temperature gradient and stress distribution of LCD glass substrates. Finally, light leakage has been improved by using the rear frame with high thermal conductivity to reduce the temperature gradient and stress of the LCD panel.
P‐192: Side‐emitting LED for Direct LED Backlight
Authors: Yang Cheng‐Lin , Chung Shuang‐Chao 
Published: August 2007

AbstractA side emitting LED for direct LED backlight system is proposed. The lens used for this side emitting LED is simple in shape and really easy to be fabricated. The design rule of the lens and the excellent simulation result of a 32 inch direct backlight system with side emitting red, green and blue LEDs are demonstrated in this paper.
P‐209: Optimization of Discharge Gases for a Mercury‐free Flat Fluorescent Lamp (FFL)
Authors: Lee Sang‐Mok , Chung Kyu‐Yong , Jung Il‐Yong , Sohn Sang‐Ho , Jeong Byoung‐Hyun , Jeong Yun‐Cheol , Kwak Min‐Gi , Park Lee‐Soon 
Published: August 2007

AbstractWe developed a Flat Fluorescent Lamp(FFL) with a high luminance by using the same discharge mode as PDP. Our FFL has a simple and unique structure where the glass substrates are used as dielectric layers. The panel has a striped line shape of 10 inch diagonal size. The Xe‐Ne and Xe‐He, Xe‐Ne‐He mixture gases were used to generate the plasma. The panel showed a maximum luminance 8,610cd/m2 under bias of 20kHz pulse of 2.9kV.
P‐202L: Late‐News Poster: Luminescence and Excitation Properties of Host Lattice and Eu2+ Ions in BaMgAl10O17:Eu2+ Phosphor
Authors: Yoshida Hisashi , Toyoshima Hiroaki , Watanabe Shinta , Ogasawara Kazuyoshi , Yamamoto Hajime 
Published: August 2007

AbstractWe have investigated excitation characteristics of Eu2+ ions doped Ba1−xEuxMgAl10O17 (BAM:Eu2+) phosphor by the measurements of vacuum ultraviolet excitation spectra with synchrotron radiation and the first‐principles calculation. The luminescence bands are observed at about 245 and 450 nm, which originate from the host lattice and the Eu2+ ions in BAM:Eu2+, respectively. The excitation spectra monitored at 449‐nm emission band show two main structures peaking at 243 and 310 nm, as well as a significant absorption band at about 200 nm. The absorption edge of the host lattice at 180 nm is almost independent of Eu concentration. Electronic state calculations for different Eu2+ sites indicate the contribution of the mO site to the 200‐nm structure.
P‐88: Study of Discharge for AC‐PDP with Leaned Facing Electrode
Authors: Ok Jung‐Woo , Kim Deok‐Won , Cho Sung‐Yong , Lee Hae‐june , Lee Ho‐Jun , Park Chung‐Hoo 
Published: August 2007

AbstractWe have proposed a leaned facing‐electrode structure of PDP, in which bus electrode is slantly shaped between ridged dielectric layers. In this study, we investigate discharge characteristics for leaned facing‐electrode PDP, which are summarized by low discharge current, high luminance, and luminous efficacy than those of co‐planar electrode structure.
P‐89: Discharge Characteristics of PDPs Having Split Scan Electrodes
Authors: Jang Jin‐Ho , Lee Ji‐Hoon , Choi Joon‐young , Lee Hae June , Lee Ho‐Jun , Park Chung‐Hoo 
Published: August 2007

AbstractWe have proposed a plasma display panel having split scan (common) electrodes. The proposed structure have two different driving schemes namely asymmetric and long‐gap mode. for the asymmetric modes, auxiliary electrode located nearly center of the primary electrodes is connected to scan or common electrode during all period of reset, address and sustain. On the other hand for the long gap mode, auxiliary electrode is electrically disconnected or maintained at dc value of Vs/2 during sustain period except first several pulses. The proposed structure and driving method can provide higher efficacy without driving margin degradation. In this study, we investigated discharge characteristics of asymmetric driving mode of split scan (common) electrodes.
P‐90: Large Scale Arrays of Microcavity Plasma Devices Based on Encapsulated Al/Al2O3 Electrodes: Device Characteristics as a Plasma Display Pixel and Low Cost Wet Chemical Fabrication Processing
Authors: Park S.‐J. , Kim K. S. , Price A. J. , Tchertchian P. A. , Chen P.‐Y. , Yoon J. K. , Eden J. G. 
Published: August 2007

AbstractAddressable, large scale arrays of microcavity plasma devices have been fabricated by wet chemical processes. Dielectric encapsulated aluminum microcavity electrodes having cavities with a diameter of 100–200 μm are formed by wet electrochemical process suitable for low cost manufacturing. This presentation reports device structure and cell designs for high pressure Xe microplasmas.
P‐91: A Study on Discharge Characteristics of Face‐to‐Face and Coplanar Sustain Electrode Structures in 42‐inch Full HD Grade AC PDPs
Authors: Kim Bo‐Sung , Tae Heung‐Sik , Cho Tae. S. , Choi Young. D. , Kim Jung. N. , Lee Kwangsik , Terao Yoshitaka , Miyama Takashi , Yamada Yukika 
Published: August 2007

AbstractThe discharge characteristics of the face‐to‐face and coplanar sustain electrode structures in 42″ full‐HD grade test panel were investigated. The UV conversion efficiency (plasma efficiency) was calculated by the visible emission of 585 nm from the Ne and infrared emission of 823 and 828 nm from Xe in the two different face‐to‐face and coplanar 6‐inch test panels by using the digital photo meter (PR‐920) and the spectrometer (diode array rapid analyzer system). The luminance efficiency of the face‐to‐face and coplanar sustain electrode structure were measured at a 4 % Xe content and a pressure of 450 Torr, and driving frequencies of 100 kHz with a duty ratio of 40 %, respectively. As a result, the UV conversion efficiency (plasma efficiency) of the face‐to‐face sustain electrode structure was improved by about 1.64 to 1.84 times than the coplanar structure and the luminance efficiency of the face‐to‐face structure was improved by about 2.03 times than the coplanar structure in the 42″ full‐HD grade AC‐PDPs.
P‐95: Distortion of Sustain Waveform Relative to Displayed Area and Its Compensation for Stable Address Discharge in AC‐Plasma Display Panel
Authors: Lim Jae Kwang , Choi Byung‐Tae , Tae Heung‐Sik , Hur Min , Park Soo‐Ho , Yoo Minsun , Lee Kwang‐Sik 
Published: August 2007

AbstractThe sustain waveforms are distorted relative to the displayed area. The distorted sustain waveform, especially the last X sustain waveform causes the address time to be delayed. Accordingly, to produce a stable address discharge irrespective of the displayed area, the sustain waveform, especially the last X sustain waveform prior to the selective reset waveform, is compensated by making its rising slope faster in proportion to the displayed area by means of controlling the timing sequence of the energy recovery circuit (ERC) circuit. As a result, the compensated sustain waveform enables the address delayed time to be saturated irrespective of the displayed area.
P‐99: Field‐Emission Properties of Screen‐Printed CNT Film Morphology by Liquid‐Phase Method
Authors: Lee Yang Doo , Cho Woo‐Sung , Lee Sang‐Geun , Lee Yun‐Hi , Ju Byeong‐Kwon 
Published: August 2007

AbstractThe film morphology of screen‐printed carbon nanotube emitters was modified by using the liquid phase method, which used ethanol. This liquid treatment modified the surface morphology of the cathode because the organic binder is soluble in ethanol and it removed organic binder from the film. The field emission image uniformity and emission current density were improved without a heat treatment. This technique has showed that the ethanol treatment without the heat treatment provided an ease way to enhanced field emission by surface treatment.
P‐100: Field‐Emission Properties of Photosensitive Carbon Nanotube Using Ethanol
Authors: Cho Woo‐Sung , Lee Yang Doo , Ju Byeong‐Kwon , Kim Jai‐Kyeong , Park Jeung Hoon , Yoo Jae‐Eun , Park Jung‐Ho 
Published: August 2007

AbstractTo investigate emission properties of the photosensitive carbon nanotube emitters using ethanol as developer, a photosensitive carbon nanotube paste was formulated. for patterning of carbon nanotube paste, backside exposure and development process were carried out after screen printing and drying process. Ethanol is not only formed pattern but also removed organic vehicles in the photosensitive carbon nanotube film. The emission properties of patterned carbon nanotube film with and without firing were evaluated.
P‐101: Nanogap Fabrication on Palladium Electrodes for Field Emission Display Applications
Authors: Tsai Chih‐Hao , Chen Kuan‐Jung , Pan Fu‐Ming , Lo Hsiang‐Yu , Li Yiming , Liu Mei , Mo Chi‐Neng 
Published: August 2007

AbstractWe have used focused ion beam (FIB) to produce nanogaps on palladium thin film line electrodes. The two facing cross‐sections of the as‐prepared nanogap were smooth and exhibited a large turn‐on voltage for electron field emission depending on the separation of the gap. Hydrogen plasma treatment was used to increase the edge roughness of the nanogap, and thereby dramatically improve the field emission characteristics. for a gap with a separation of 90 nm, the turn‐on voltage reduced to 50 V from 175 V after the hydrogen plasma treatment.
P‐102: Three‐Dimensional Simulation of Novel Surface Conduction Electron‐Emitters
Authors: Lo Hsiang‐Yu , Li Yiming , Chao Hsueh‐Yung , Tsai Chih‐Hao , Pan Fu‐Ming , Kuo Ting‐Chen , Liu Mai , Mo Chi‐Neng 
Published: August 2007

AbstractWe for the first time explore a novel structure of Pd thin‐film emitter fabricated on the substrate with various gaps ranging from 30 nm to 90 nm. with the 3D electromagnetic particle‐in‐cell (PIC) simulation, we study the conducting mechanism and driving current for the new device with one palladium field emission emitter. Compared with the experimental data, our calibrated simulation predicts a high emission efficiency of the investigated device structure. It is found that the turn‐on voltage is about 50V and a very high electron emission current of 0.1 mA is estimated at the anode voltage of 80 V for one emitter. The novel structure of surface conduction electron‐emitter (SCE) has the advantages of the simple fabrication and the high emission efficiency. Based upon the numerical procedure, we are currently investigating the emission efficiency for more advanced structures of SCE.
P‐103: Anodic‐Aluminum‐Oxide Templated Carbon Nanotubes in the Field Emission Triode
Authors: Lin Chen‐Chun , Chang Kai‐Chun , Pan Fu‐Ming , Kuo Cheng‐Tzu , Liu Mei , Mo Chi‐Neng 
Published: August 2007

AbstractTo fabricate the field‐emission triode structure, carbon nanotubes (CNT) were used as field emitters and grown in the anodic aluminum oxide (AAO). AAO thin layer with vertical pore channels was first prepared on the Si (100) substrate and was used to template the following growth of CNTs in an electron cyclotron resonance chemical vapor deposition (ECR‐CVD) system. The tetraethoxysilane (TEOS) oxide and Al layer were deposited on the CNTs and acted as the dielectric layer and gate electrode layers for the triode structure, respectively. Reactive ion and wet etches were then used to open the field‐emission area in the triode. Field‐emission characteristics of the CNT emitters have been studied and an anode turn‐on field of ∼ 8.05 V/μm was measured.
P‐105: Improvement of 2+2 Dynamic Drive Schemes for Cholesteric Displays
Authors: Rybalochka Andriy , Sorokin Viktor 
Published: August 2007

AbstractWe have demonstrated the waveform composition method for 2+2 dynamic drive schemes for bistable cholesteric displays with increased addressing speed. The special method of addition of segments into each selection stage makes it possible to increase the addressing speed on 30−35 percent in comparison with the standard 2+2 dynamic drive schemes. Influence of the number of additional segments on the ratio of the peak voltage to effective voltages during different addressing stages and on the frequency of driving pulses has been analyzed. Possibilities of gray scale implementation with proposed improvement have also been discussed.