bluuebunny/crossref_metadata_2025_split huggingface dataset:
P‐133: A New DIDE Cell Structure for High Luminous Efficacy and Low Voltage Driving in Full HD PDPs
Authors: Jung Hae‐Yoon , Whang Ki‐Woong 
Published: January 2009

AbstractWe propose a new PDP cell structure which shows high luminous efficacy and low driving voltage. The new structure can use the ignition discharges occurring between the main and auxiliary electrodes, that helps the main discharges to be generated efficiently at a low voltage. Test panels which have 50 inch Full HD resolution (1920 × 1080) adopting the new structure showed a high luminous efficacy of 3.6 lm/W (green) with a Ne‐Xe (12%) mixture gas at moderate sustain voltage of 190V.
P‐134: Dependency of Auxiliary Pulse Width on Luminous Efficacy in AC Plasma Display Panel
Authors: Lee Sung‐Min , Choi Chung Sock , Cho Kwan Hyun , Choi Kyung Cheol , Kim Woo‐Tae , Lim Jong Rae , Cho Young‐Jae , Kim Sung‐Tae 
Published: January 2009

AbstractThe width of the pulse applied to an auxiliary electrode was varied to investigate the characteristics of luminous efficacy of an AC plasma display with an auxiliary electrode in accordance with the frequency and duty factor of the sustain pulse. The auxiliary voltage margin increased with an increase in the sustain pulse width and a decrease in the auxiliary pulse width. In addition, the luminous efficacy increased with a decrease in the sustain pulse width and an increase in the auxiliary pulse width, except when the time interval between the auxiliary pulse and the subsequent sustain pulse is zero.
P‐135: Analysis on Sustain‐Waveform Distortion Induced by Display‐Pattern Type in AC‐Plasma Display Panel
Authors: Lim Jae Kwang , Choi Byung‐Tae , Tae Heung‐Sik , Kim Hee Joong , Hur Min , Yoo Minsun , Heo Enu Gi 
Published: January 2009

AbstractThe sustain waveforms are distorted relative to the displayed area. The sustain waveforms are distorted relative to the displayed area, which causes the variations in luminance and luminous efficiency. It is found that the constant rising slope of the displayed are causes the sustain waveform distortion. A discharge in a cell has voltage‐current (V‐I) characteristics that the applied voltage waveform determines the discharge current. A circuit also has V‐I characteristics that the total current of all cells determines the voltage waveforms applied to cells. Furthermore, the Y and X electrode have resistance and belong to cells aligned horizontally, accordingly, the number of on‐cells in horizontal line distorts the voltage applied to each cell. This paper shows by analysis and experiments that the applied voltage and the luminance and the luminous efficiency of an AC‐PDP cell are affected by the amount and distribution of displayed area.
P‐136: Low Cost and High Efficiency Energy Recovery Circuit for Driving AC Plasma Display Panel with Single Sustain Circuit Board
Authors: Lee Su‐Chang , Kang Bongkoo , Seo Ju‐Won , Soh Sang‐Yoon 
Published: January 2009

AbstractThis paper presents an energy recovery (ER) circuit which can improve the energy recovery efficiency and can drive AC PDP with a single sustain circuit board. The proposed ER circuit consists of one energy recovery inductor and two insulated‐gate bipolar transistors. To reduce power consumption in the parallel resonance mode of operation, the leading edge of the first sustain pulse and the trailing edge of the last sustain pulse are generated using a current build‐up operation. The measured energy recovery efficiencies of the proposed ER circuit were better than the conventional parallel resonance circuit. Experimental results on a 42‐inch XGA single scan PDP show that the proposed ER circuit is suitable for use in a PDP drive circuit.
14.2: Double‐Sided Reflective LCD (DSRL)
Authors: Cho Sohaeng , Han SangChul , Hwang KwangSik , Park HyungSeok , Ahn SuChang , Cho ByoungChul , Lee DeukSu , Kang InByeong , Chung InJae 
Published: January 2009

AbstractWe developed one‐cell type double‐Sided reflective LCD (DSRL) which is optimized for a mobile environment. DSRL is a reflective LCD for good readability in the outdoor environment and a low power consumption display with no backlight unit. We fabricated 2.2 inch and 15 inch DSRL panels. Although DSRL panel has a low physical resolution, it shows much better visual resolution achievable by using image processing technology. An original image should be downsized to remove aliasing and to minimize color error. Generally, the color reproduction ratio in the reflective mode of a transflective panel is around 5% NTSC. In contrast, the performance of DSRL panel reaches 10% NTSC. In addition, reflection ratio of DSRL exceeds 20%, compared to generally known reflection ratio of 5% in the case of conventional transflective LCD.
P‐137: Investigation of Discharge Phenomena in AC‐PDPs with an Auxiliary Electrode Using the Vt Closed Surface
Authors: Lee Seong Min , Cho Kwan Hyun , Jang Cheol , Choi Kyung Cheol 
Published: January 2009

AbstractIn this work, a novel Vt closed surface model is proposed to investigate the surface discharge phenomena of AC‐PDPs with an auxiliary electrode. The AC‐PDPs with an auxiliary electrode in this work had a total of four electrodes, the combination of which produced six voltage vectors between two given electrodes. The measured Vt closed surface of this type of AC‐PDP is described 3‐dimensionally due to the additive voltage vectors, and was implemented by combining the VTC curves obtained by measuring the firing voltages. Firing voltages were detected using three electrode selection methods, and the Vt closed surface appeared to be same shape regardless of method. Agreement between the three measurement processes confirms that the Vt closed surface model of AC‐PDPs with an auxiliary electrode has a constant morphology. In addition, a resultant form based on the address electrode among morphologies showed a closed surface composed of ten faces which were represented as a voltage vector derived from the voltage differences of the four electrodes.
P‐138: Driving Waveforms for Reducing Address Discharge Time Lag in an AC PDP with Auxiliary Electrodes
Authors: Jang Cheol , Choi Kyung Cheol 
Published: January 2009

AbstractThe address discharge time lag in an AC PDP with auxiliary electrodes was improved by applying auxiliary pulses and a stepped scan pulse during the address period. Interaction between the auxiliary pulse and the stepped scan pulse generated priming particles during the address period, influencing the address discharge positively. As a result, the minimum address voltage was reduced, and was lower than that of conventional driving waveforms. Furthermore, when the proposed waveforms were applied, the address discharge time lag was improved by 32% compared to that of the conventional driving waveforms with the same address voltage.
P‐139: Distinguished Student Paper: Driving Waveform with Multi‐Scan High Level for Stable Address Discharge Under Variable Ambient Temperature
Authors: Jang Soo‐Kwan , Tae Heung‐Sik , Jung Eun‐Young , Ahn Jung‐Chull , Oh Je‐Hwan , Heo Eun Gi 
Published: January 2009

AbstractTo explain the address discharge fail at a high temperature, the wall charge leakage phenomenon during address‐period is investigated relative to the number of applied address and sustain pulses under variable ambient temperature based on the Vt closed‐curve analysis. The wall charge leakages are increased with an increase in the number of the applied address and sustain pulse, and this tendency are intensified as the ambient temperature increased. It is also observed that the wall charge leakage during address period depends on the level of scan high voltage. Base on the experimental observation, the driving waveform with multi scan high level is proposed to produce the stable address discharge under variable ambient temperature.
14.3: Illumination Design of a Multi‐Touch Sensing Projection Screen for Augmented Virtual Environments
Authors: Liu Sheng , Hua Hong , Gao Chunyu 
Published: January 2009

AbstractThe paper presents the illumination engineering for a low‐cost multi‐touch projection screen. Eight near infrared emitting diode (IRED) strips with optimized line densities serve as the illumination sources for the finger tracking. The design achieves highly uniformed illumination, with an illumination efficiency of 55% and contrast of 0.098. Implementation and experimental results are presented.
P‐144: Photo‐Luminescence Spectra of Doped MgO Crystals and the Effect of Heat Cleaning
Authors: Kuang Yawei , Li Qing , Tolner Harm , Li Huijuan , Zhang Xiong , Shi Yinxin , Song Minggui 
Published: January 2009

AbstractPhotoluminescence (PL) spectra were recorded for doped MgO crystals, irradiated by VUV light (λ=147nm, hv=8.4eV) in vacuum at room temperature. The emission band between 200 nm and 800nm was observed. Two strong emission peaks are found, one around 330nm and one centered at about 700nm. We assume that the 330nm peak is a recombination emission peak, while the 700nm peak is supposed to be related to hole traps. The crystals were then baked in air for 1h at 150°C, 450°C and 800°C, after which the samples were studied with PL analysis. The trend is that the recombination peak around 330nm increases with baking temperature, suggesting that the heat‐cleaning treatment improves the recombination emission characteristics of doped MgO crystals.
P‐145: Influence of Crystal Structure of Doped MgO on Jitter Time in SM‐PDP
Authors: Li Qing , Tolner Harm , Yang LanLan , Tang Yongming , Zheng Yaosheng , Kuang Yawei , Shi Yinxin , Song Minggui , Zhang Qi , Lin Qingyuan , Wang Baoping 
Published: January 2009

AbstractThe effect of the MgO crystal structure on the addressing discharge jitter in SMPDP is investigated. By varying the oxygen pressure during E‐beam deposition, different MgO crystal structure was made, as analyzed by XRD. The jitter time in a PDP panel was measured for isolated On‐pixels at low intensity levels. The conclusion is that the jitter time can be decreased by maximizing the relative (200)/(111) peak ratio, obtained by decreasing the O2 addition during E‐Beam MgO deposition.
P‐146: Thermoluminescence Spectra of MgO Poly‐Crystals Exposed to Vacuum Ultraviolet (VUV) Radiation
Authors: Shao Qiyue , Tolner Harm , Li Huijuan , Kuang Yawei , Li Qing , Dong Yan , Jiang Jianqing 
Published: January 2009

AbstractA comparative study of photoluminescence and thermoluminescence for both pure and doped MgO poly‐crystals has been performed. for pure MgO, a red emission band at 730nm can be observed under VUV light excitation. The doped MgO exhibits a strong emission at 650 nm excited by the VUV or 250 nm light. After exposure to VUV radiation, a strong TL peak corresponding to red emission band can be detected in the temperature range of 20°C–250°C for both doped and undoped MgO. Using Hoogenstraaten's heating rate method, a trap depth of 0.31 eV can be obtained for pure MgO. The trap depth in doped MgO is about 0.51 eV and shifts to high energy level due to the addition of the doping element.
P‐149: Analysis of Optical Emission Spectra from AC‐PDP Operated at Lower Voltage
Authors: Uchida Giichiro , Uchida Kazuya , Kajiyama Hiroshi , Shinoda Tsutae 
Published: January 2009

AbstractHere is presented the measurements on AC‐PDP operated at lower voltage, where SrO is used as a protective layer. The SrO‐PDP shows the lower breakdown voltage, the higher luminous efficacy, and the stable discharge compared with ordinary MgO‐PDP for the Xe concentration of 4 %. The optical emission spectroscopy is also performed to analyze the electron energy. The measurement shows SrO‐PDP discharge has lower electron energy due to the lower operation voltage.
P‐152: Field Emission Properties of t‐RNA Wrapped Carbon Nanotube Emitters
Authors: Cho Woo‐Sung , Ju Byeong‐Kwon , Shin Hyun Yong , Kim Seung Wook , Kim Yong Churl , Park Jung‐Ho , Han Jong‐Hon , Park Hun Kuk 
Published: January 2009

AbstractWe have developed a method for fabricating a good carbon nanotube (CNT) emitter using electrophoretic deposition (EDP) technique. A film of t‐RNA (transfer‐ribonucleic acid) wrapped CNTs was deposited on an ITO substrate from an aqueous mixture of single walled CNT (SWCNT), t‐RNA, and detergent by electrophoresis. t‐RNA wrapped SWCNTs are not only dispersed in de‐ionized (DI) water but also deposited on an ITO substrate.
P‐155: Enhanced Electron Emission with Robust CNTs Grown by Resist‐Assisted Patterning Process
Authors: Ryu Je Hwang , Lee Chang Seok , Kim Ki Seo , Lim Han Eol , Min Kyung Woo , Jeong Il Ok , Manivannan S. , Jang Jin , Park Kyu Chang 
Published: January 2009

AbstractWe developed a novel carbon nanotube field emitter arrays (CNT‐FEAs) with resist‐assisted patterning process by dc‐plasma enhanced chemical vapor deposition (PECVD). Through this method, we obtained a very strong bonded CNT with substrate. The CNTs were grown with −600 V bias to substrate electrode and +300 V bias to mesh grid being placed 10mm above the substrate holder electrode. The structure and electrical properties of the CNTs were strongly related to the growth time. The length was decreased after 80 minute and the diameter increases with growth time. An electron emission current increases with growth time. The growth mechanism, electron emission characteristics, and mechanical robustness were discussed.
P‐158: Recent Developments in Photo Alignment Technology: Alignment Properties of Novel Azo Dye CD‐1
Authors: Hegde Gurumurthy , Chigrinov V. G. , Kwok H. S. , Hasebe H. , Takatsu H. 
Published: January 2009

AbstractLiquid crystal photoalignment using commercially available azo dye CD‐1 is reviewed. Proposed dye shows excellent alignment properties which is highly promisable for future applications. This photoalignment is based on rotational diffusion in a potential created by the light field as well as intermolecular forces. It will be shown that this photo‐aligning dye shows strong anchoring energy of the LC cell and also having high thermal and ultraviolet (UV) stability. The application of liquid crystal displays using this dye is also discussed.
P‐159: Releasing Behavior of Image Sticking
Authors: Chen Yu‐Chieh , Liu Pin‐Miao , Liao Chien‐Huang , Ting Tien‐Lun , Chang Ting‐Jui , Liao Wei‐Lung , Lien Alan 
Published: January 2009

AbstractThis paper presented the releasing behaviors of image sticking. Diffusion effect plays the critical role to release image sticking; therefore, higher temperature accelerates the releasing behavior. The releasing speed at temperature of 60C is faster than that at 25C by a factor of 6 in our demonstration.
4.1: Tests and Methods of the ICDM
Authors: Miseli Joe 
Published: January 2009

AbstractThe ICDM (International Committee for Display Metrology) became a part of SID in May of 2007. The ICDM will produce a display measurement standard (DMS) in 2008. The expectations are high: to produce “the” industry standard for measurement and evaluation of displays. But the talent pool of participants is deep, some of the best display evaluation experts of the membership of SID itself — some of the best in the world — all working together toward the common goal of producing a significant, unified display metrology and measurement standard for evaluating displays and classifying their characteristics properly. The DMS will encompass standard tests required to measure, evaluate, and understand display performance characteristics as well as provide tests and metrics which are long overdue in the industry to be standardized. We discuss tests, methods, metrics used in the ICDM DMS and member contributions, including a first report of the round‐robin test for motion blur conducted by ICDM participants.
P‐162: A Study on Image Sticking of Photo Reactive Polyimide Alignment Layer for LCD
Authors: Lee Sang Gu , Hong Sung Hwan , Hwang Young Jae , Shin Dong Myung 
Published: January 2009

AbstractPhoto‐alignment methods have image sticking problems, which can be a severe defect to achieve high reliability of LCD panels. It is caused by unreacted photosensitive functional groups. To deactivate those, we introduced interfacial reaction using ethanethiol or bromine and demonstrated transformation from C‐C double bonds to C‐S or C‐Br using UV‐vis, XPS, PEM and AFM images.
P‐165: Novel type of Flexible and Full Color Electronic Paper Displays Using Quick‐Response Liquid Powder Technology
Authors: Nishii Masayuki , Sakurai Ryo , Tanaka Kanji , Ohno Shingo , Tsuchida Shinya , Masuda Yoshitomo , Tanuma Itsuo , Hattori Reiji 
Published: January 2009

AbstractUsing electronic liquid powder™ technology, the paper displays with both functions of flexibility and full color have been developed employing two structures. One has a conventional structure with color filters made with photolithographic process and the other has a “top color filter” structure with color filter prepared by flexography printing method. These displays have almost the same image quality with a thin thickness and a good flexibility.
P‐166: An Electrophoretic LCD with Selective Reflection
Authors: Sikharulidze David 
Published: January 2009

AbstractHere is presented a novel electrophoretic display, which employs a suspension of pigments in liquid crystals. The dielectric anisotropy of the LC medium allows the switching with threshold and video rate. The use of a helical LC with electrophoretically controlled selective reflection enables optical performance with high contrast and reflectivity.
P‐167: 4.5″ Electrochromic Display with Passive Matrix Driving
Authors: Jang Jae Eun , Jung Jae Eun , Noh Chang Ho , Kim Jung Woo , Park So Youn , Lee Ji Min , Chun Young Tae , Jeon Seog Jin , Jin Yong Wan , Han Jai Yong , Kim Jong Min 
Published: January 2009

Abstract4.5″ electrochromic (EC) display has been fabricated and driven by passive matrix (PM) driving method. The ‘cross‐talk’ problem between cell units, induced easily by PM driving skill, has been solved using gel type electrolyte and its isolation. White reflector makes good white reflectance, of which value is above 60%. The simple structure and easy driving method allow the device application in various areas, such as simple segment driving devices, display information (DI) board, and paper like display (PLD).
P‐171: A Flexible Touch‐Sensitive Writing Tablet
Authors: Schneider Tod , Magyar Greg , Barua Sankar , Ernst Todd , Miller Nick , Franklin Sean , Montbach Erica , Davis Donald J. , Khan Asad , Doane J. William 
Published: January 2009

AbstractWe present a flexible touch‐sensitive writing tablet utilizing a reflective bistable cholesteric liquid crystal laminated between two conductive‐polymer coated polyethylene‐terephthalate substrates. The device features a selective pressure response suitable for high‐resolution lines to be drawn into the screen. The device is inexpensive, conformable, and laser‐cut to any desired shape.
P‐173: Fast Turn‐Off Switching of a Liquid Crystal Cell by Optically Hidden Relaxation
Authors: Baek Jong‐In , Kim Ki‐Han , Kim Jae Chang , Yoon Tae‐Hoon , Shin Sung Tae , Woo Hwa Sung 
Published: January 2009

AbstractA method for fast turn‐off switching of a liquid crystal (LC) cell is proposed. LC in the bright state is twist‐deformed by the in‐plane field, whereas LC starts to relax in the turn‐off process from the vertically aligned state, during which the director is in parallel to the rubbing direction so that the relaxation is optically hidden. A three‐terminal (3T) structure is employed for both in‐plane and vertical switching. The turn‐off time of about 0.6 ms was obtained with no decrease in transmittance.
P‐175: Carbon Nanotube Doped Liquid Crystal OCB Cells: Dielectric and Electro‐Optical Properties
Authors: Lu Shin‐Ying , Chien Liang‐Chy 
Published: January 2009

AbstractWe report single‐wall carbon nanotube (CNT) doped liquid crystal materials which show significant improvement in the response time for optical controlled birefringence (OCB) cells. Four different types of liquid crystals were chosen to mix with CNTs and they demonstrate similar results in improvement of response time. The length of CNTs used is about 2–5 μm while liquid crystal molecules are generally at the range of a few tenth angstroms. The decrease in response time is due to the change of elastic constant caused by the CNT. We also investigate the dielectric permeabilities of the CNTs doped materials. The experimental results show that the real part of dielectric permeability at operating frequency remains the same while the imaginary part increases at low frequency.
P‐256L: Late‐News Poster: Realization of Reliable Splay‐to‐Bend Transition for OCB‐Mode LCD Based on Analyzing Behavior of Disclination
Authors: Kuboki Ken , Kishimotog Tadashi , Hamakubo Yuriko , Wako Kazuhiro , Ishinabe Takahiro , Miyashita Tetsuya , Suzuki Yoshito , Uchida Tatsuo 
Published: January 2009

AbstractOCB‐mode LCD, which has fast response, requires Splay‐to‐Bend transition before operation. This paper describes quantitative analysis for formation and spread of disclination to create nuclei of the transition and spread area of bend alignment. We designed and produced the prototype of 6.5 inch Full‐HD OCB‐mode FSC‐LCD based on mentioned analysis.
P‐176: New High‐Performance Algorithm for 2+2 Dynamic Drive Scheme for Cholesteric LCDs
Authors: Rybalochka Andriy , Sorokin Viktor 
Published: January 2009

AbstractA novel waveform composition method for passive matrix addressing of Cholesteric LCDs is proposed. for the first time for 2+2 dynamic drive schemes we show that during addressing while one row is in the selection stage other rows can be in two different addressing stages — the preparation and holding stages. It allows us to decrease the frame time for addressing with no row‐number‐dependent and no data‐pattern‐dependent defects. Also, we present comparative analysis of the new and some previously known 2+2 dynamic drive schemes in which different waveform composition methods and pipeline algorithms are used.
15.1: Improvements Made to the Contrast Ratio of PDPs in a Bright Room by Coating the Phosphors with Pigments
Authors: Moon Eun‐A , Jeong Byoung‐Woo , Bae Bom‐Jin , Kim Je‐Seok , Ryu Byoung‐Gyl , Choi Jeong‐Sik , Park Eung‐Chul 
Published: January 2009

AbstractIn order to improve the contrast ratio of PDPs in the bright room, the reflection luminance of the panel needs to be decreased while the luminance is increased. In this particular process, we decreased the panel reflection by coating the phosphors with pigments of each color. In order to minimize the loss of brightness, we did not coat the green phosphor with its respective pigment. The main reason this was not done was due to the fact that the green phosphor is the most important emission material for the brightness of PDPs, but the green pigment is the most ineffective material in lowering the reflectance. This technique was applied to a 50″ PDP panel. The results showed a contrast ratio increase of 15% without any sacrifice of the luminance by just adjusting the transmittance of the front filter.
P‐177: Multi‐Line Addressing of LCDs with Simple Diagonal Matrices
Authors: Gopalan Ramya , Ruckmongathan Temkar N. 
Published: January 2009

AbstractA multi‐line addressing technique that is based on diagonal matrices is demonstrated. Number of time intervals to complete a cycle is independent of the number of address lines that are selected simultaneously. Good brightness uniformity is achieved among pixels that are driven to the same state.
P‐178: Modified Discrete Cosine Transform for Addressing Liquid Crystal Displays
Authors: Gopalan Sowmya , Ruckmongathan Temkar N. 
Published: January 2009

AbstractAn addressing technique that is based on modified discrete cosine transform (M‐DCT) is proposed to drive RMS responding matrix displays. Time taken to switch from one arbitrary gray shade to another is almost independent of initial and final gray shades.