bluuebunny/crossref_metadata_2025_split huggingface dataset:
P‐79: Characterization of Narrow‐Channel TFT Using Asymmetric Halftone Exposure
Authors: Chun Ki‐Chul , Woo Juhyun , Jung Deuk‐soo , Park Mungi , Kim Hwan , Lim Byoung‐Ho , Yu Sang‐Jeon 
Published: January 2009

AbstractAsymmetric slits were designed to make channel length (L) of thin film transistor (TFT) narrower. Amorphous silicon TFTs, having various channel lengths in the range of 1.5μm to 4μm, were successfully fabricated by optimizing two different slit widths beyond its own resolution limitation of a exposure system. Also, characteristics of TFTs having channel length below 4μm were investigated in this paper.
P‐262: Printing Technologies for Flexible OLEDs
Authors: Tijdink Marcel , de Winter Suzanne , Kruijt Peter , Michels Jasper , Wilson Joanne , Harkema Stephan , Hack Martin , Hoog Ad op 't , Bollen Dirk 
Published: January 2009

AbstractThere is a large potential market for flexible OLED Lighting and signage, however this requires to scale up present laboratory processes towards low cost, large area printing technologies. This presentation will compare lab scale made spin coated OLEDs on glass with ink jet and gravure printed OLEDs on foils.
P‐81: A Novel Moving Picture Study of the IPS mode TV with 120Hz Driving for Full HDTV Application
Authors: Park Se Hong , Park In Cheol , Kim Jae Hong , Kim Jang Ryang , Shin Jong Keun , Lee Kyung Ha , Jung In Jae , Ru Ji Bong , Kim Byung No , Yun Ju Ho 
Published: January 2009

AbstractMotion Picture Quality (MPQ) in LCD TV becomes very important point because of color vividness at motion picture image. To express MPQ is not only response time, but also color shift. We have studied the color shift of motion picture concept in two cases: one is a primary color shift and the other one is a motion blur color shift from motion blur by moving pictures with a fast speed. We are defined the Motion Picture Color Shift (MPCS) evaluation method to improve the display quality of LCD TV. As result of this paper confirmed that IPS have realized the most resemblant quantitative result with human eye perception and examined to judge the quality of captured moving picture via a pursuit camera system using Macbeth pattern and general color pattern. The color shift of IPS TV was measured by the novel evaluation method. In the Macbeth pattern, the max value of Δu'v' in IPS and VA is 0.012 and 0.018, respectively. The IPS TV had shown that have advantages of not change at moving picture.
P‐83: The Correlation of MPRT and Moving Picture Resolution with Actually Perceived Moving Image Qualities
Authors: Baek Heume‐Il , Yoon Jae‐Kyoung , Ahn Ji‐Young , Lim Moojong , Shin Hyun‐Ho 
Published: January 2009

AbstractThe motion picture response time (MPRT) methods have been widely used to evaluate the degree of motion blurs in display devices such as liquid crystal displays (LCDs) and plasma display panels (PDPs). Recently, APDC (Advanced PDP development center Corporation) announced the moving picture resolution method to represent the moving image quality of FPDs by using a resolving power as a measure. However, there are some differences in evaluation results of these two methods for same display devices. In this study, we measured the moving picture resolutions of five different FPDs which have different MPRT values and compared these results with actually perceived moving image qualities. The results show that the MPRT has higher correlation with actually perceived moving image qualities than the moving picture resolution method.
P‐84: Luminance and Color Measurement for LED Backlights with a Hyperspectral Camera
Authors: Hsu Hsiang‐Han , Lan Yu‐Ping , Lai Chieh‐Hung 
Published: January 2009

AbstractA calibrated hyperspectral camera is used for luminance and color measurements for entire surface of LED backlights. The measurement results are compared and consistent with the results of point to point measurements of widely used Topcon spectroradiometer SR‐3A. The hyperspectral camera demonstrates the feasibility and reliability of this application.
P‐89: New Multispectral Fourier Optics Viewing Angle Instrument for Full Characterization of LCDs and their Components
Authors: Boher Pierre , Leroux Thierry , Bignon Thibault , Glinel David 
Published: January 2009

AbstractFourier optics viewing angle instruments are now widely used to check the viewing angle behaviors of displays in terms of luminance, contrast and color. In the present paper we introduce a new generation of EZContrast instruments that provides not only luminance and color at any incidence and azimuth angle but also the full spectral radiance in all the visible range. After a description of the new system we show that these new measurement capacities are useful in different situations: for the LCD emissions, each color behavior can be understood in all its details and color variations measured with an un‐precedent accuracy; for display components, their angular and spectral transmittance properties are useful for best understanding and more precise optical simulations.
P‐91: A Method for Detecting and Classifying the Mura Phenomena in TFT‐LCDs
Authors: Wu Yung‐Hsun , Hsu Chuan‐Wei , Chen Chueh‐Ju , Yang Chiu‐Lien , Pang Jia‐Pang 
Published: January 2009

AbstractWe have proposed a method for detecting and classifying the mura phenomena. The related theory and experiments of how to measure the mura phenomena are discussed in this paper. By using the flicker measurement with related brightness evaluation, we can not only classify the electrical and non‐electrical mura but also setup a quantitative judgment criterion for the mura grade. It benefits us to improve the image quality and to quickly determine the root causes of the mura phenomena.
13.2: Electrochemical Deposition of Carbon Nanotube Films and Applications in Field Emission Display Devices
Authors: Cheng Lap‐Tak , Zheng Ming , Mahler Walter , Roach David , Fennimore Adam , Reynolds Gillian , Kim IL Hwan , Lee Chang Soo , Kim Hun Soo 
Published: January 2009

AbstractAn electrochemical deposition (ECD) process for the formation of carbon nanotube (CNT) thin films on ITO coated glass is described. This simple and scalable process takes advantage of a highly stable aqueous dispersion of ribonucleic acids (RNA) wrapped CNTs reported previously. Thin films showing dense coverage of nanotubes can be prepared in a few minutes by the application of a few volts between a conductive substrate and a stainless steel counter electrode with both immersed in the RNA‐CNT aqueous dispersion. Patterned deposit with feature size of microns can be readily obtained by masking the conductive layer on the substrate. Since ECD is an additive process with efficient use of CNTs, it provides a cost effective alternative to photoimagable deposition. Unlike electrophoretic deposition, the ECD process is an aqueous, low voltage, and field independent process. Fringing field issues which can affect deposition uniformity on patterned surfaces are therefore avoided. for electron field emission applications such as display or backlight, ECD films can be sintered and surface treated to obtain highly emissive surfaces with low threshold voltage and high uniformity emission. The field emission performance of diode and triode devices prepared with ECD is discussed.
P‐103: A High Performance Low Cost Multifunctional Film for LCD Backlight
Authors: Lu Zhijian Z. J. 
Published: January 2009

AbstractA multifunctional film with light diffusing and brightness enhancement capabilities has been successfully developed. The multifunctional film eliminates the need of costly prism film and diffuser plate in LCD TV backlight. Backlight using the film provides comparable or superior performance when compared with commercial backlights.
P‐108: Backlights in Mobile Display Power Management
Authors: Kimmel Jyrki , Levola Tapani 
Published: January 2009

AbstractPower efficiency of a mobile multimedia display relies on power management methods that affect the on‐state of the display. Other means of power management in mobile devices are dependent on managing the transitions between the off‐state, power‐saving mode, and on‐state effectively. These methods do not readily apply to modern consumption of mobile multimedia, as the display is in the on‐state continuously. A conceptual display system power management model was developed. The model was used to estimate the efficacy of a new diffractive optical mobile display backlight concept, and the effect of the display backlight design especially was found to result in considerable power savings in modern mobile multimedia displays.
P‐110: Multi Refractive Collimation Film(MRF) for NBPC BLU System
Authors: Park Jae Hyun , Kim Sung Hun , Kim Byoung Ku , Ahn Byung Chul 
Published: January 2009

AbstractNowadays, NBPC BLU was requested High Luminance and low power consumption. So, we have studied a new conceptual enhanced light performance film consists of multi high‐refractive materials and functional layers. Using an optical simulation tool, We deduced an new idea and optimized optical design. We have developed the enhanced luminance film according to the optical conditions. When compared to conventional BLU system, Luminance was increased about 110% in 15.4inch NBPC BLU and stabilized for mechanical design. The result showed that new conceptual film realized technical improvement in NBPC BLU system.
P‐111: Multi‐Performance Film (MPF) for Highly Efficient LCD Backlights
Authors: Hsieh Jen‐Chieh , Huang Yi‐Pai , Chen Chun‐Ho , Lo Yu‐Chun , Fang Jen‐Yu , Shieh Han‐Ping D. , Yu Gu‐Sheng , Chiang Tien 
Published: January 2009

AbstractA multi‐performance film (MPF) which has concave‐parabolic cylinder micro prism structures was proposed to improve light coupling efficiency and to reduce lamp‐Mura defect. A MPF combined light diffusion and light collecting performance as a multiple functional film. By applying the MPF, wider FWHM angle, higher light output coupling efficiency, and slighter lamp‐Mura were demonstrated on a 32‐inch direct‐type backlight.
P‐120: Comparison of Discharge Characteristics between Coplanar‐ and Plate‐Gap Structures in Xe‐Backlight Unit
Authors: Heo Jaenyeong , Kim Jae Young , Lim Jae Kwang , Tae Heung‐Sik , Seo Jeong Hyun , Cho Byung‐Gwon 
Published: January 2009

AbstractThe discharge characteristics between the coplanar‐gap and plate‐gap structures in the 6‐in. Xe backlight units (BLU) are examined and compared. The discharge characteristics including the firing/sustaining voltages, capacitances of lamps, luminance and luminous efficiencies are measured for two different discharge structures, such as the coplanar‐gap and plate‐gap structures. In particular, the voltage, current, and infrared waveforms are observed are compared for two different structures.
P‐123: Image Separated Viewing Angle LCD Base on Multi Domain
Authors: Mak Hin Yu , Xu Peizhi , Chigrinov Vladimir 
Published: January 2009

AbstractIn this paper, an image separated liquid crystal display (LCD) which can present two separate images simultaneously on one screen has been proposed. Hybrid aligned nematic (HAN) cell is used as the liquid crystal (LC) cell in this configuration. The structure is conventional and only one more step UV exposure is needed during photoalignment process to produce domains. This novel design is suitable for advertising and security applications.
P‐245L: Late‐News Student Poster: Wide Viewing Angle 3D Depth‐Fused Display (DFD) System
Authors: Hsu Ching‐Yi , Huang Yi‐Pai , Chang Yu‐Chen , Ding Zhi‐Hong , Su Chih‐Ping 
Published: January 2009

AbstractViewing angle caused by images shift is the most serious issue for depth‐fused display (DFD). A wide viewing angle 3D‐DFD system utilized high collimated backlight with wide viewing angle micro‐lens array was proposed to avoid the images shift. From the experiment results, the viewing angle was demonstrated to be increased to θ = ±30° ∼ ±40°, which is much wider than that of conventional DFD (θ < ± 10°). Consequently, the proposed 3D‐DFD system will be glasses‐less, fatigue‐less, and wide viewing.
P‐126: Nanowire Contact Powder Electroluminescent Technology
Authors: Chen Feng , Kitai Adrian H. 
Published: January 2009

AbstractBy integrating conductive nanowires into AC powder EL technology, a novel, self‐supported nanostructured powder EL device, consisting of a layer of conductive nanowires which directly contact a ZnS phosphor layer and function as rear electrodes, is reported in this paper. The mechanism for light generation from the nanowire powder contact EL device can be understood from the bipolar field‐emission model.
P‐127: A ZnO Based Heterostructured n‐i‐n Light‐Emitting Diode by Low‐Cost Ultrasonic Spray Pyrolysis
Authors: Sun Xiao Wei , Zhao Junliang , Tan Swee Tiam , Lo G. Q. , Kwong D. L. 
Published: January 2009

AbstractA n‐Zn1−xMgxO/i‐ZnO/SiOx/n+‐Si heterostructured light‐emitting diode has been demonstrated by low‐cost ultrasonic spray pyrolysis. The current‐voltage measurement shows typical characteristics of a back‐to‐back diode, due to the double Schottky barriers induced by the SiOx layer. Blue electroluminescence peaking at 460 nm was observed at room temperature when a positive bias of ∼4V was applied on the Si substrate. The electroluminescence is suggested to be dominated by the donor‐acceptor pair recombination in the i‐ZnO layer, where the holes were injected from the valence band of Si into the acceptor level of i‐ZnO.
P‐239: Synthesis and Photoluminescence Properties of Tb3+‐Doped Lanthanide Orthophosphates (La1−xGdx)0.94Tb0.06PO4 (0.5≤x≤1.0)
Authors: Park Kyeongsoon , Lee Jung Kyu , Choi Jung Wook , Oh Hyo‐Jin , Kwon Youngjae 
Published: January 2009

AbstractThe photoluminescence properties of the (La1−xGdx)0.94Tb0.06PO4 (0.5≤x≤1.0) phosphors synthesized by ultrasonic spray pyrolysis were investigated under VUV irradiation. In order to understand the effect of Gd addition on the photoluminescence properties, we obtained the excitation and emission spectra of the (La1−xGdx)0.94Tb0.06PO4 phosphors with various Gd contents. Annealed (La1−xGdx)0.94Tb0.06PO4 phosphors showed a smooth, regular, and spherical morphology. The XRD spectra of the (La1−xGdx)0.94Tb0.06PO4 showed the solid solutions of the constituent lanthanide phosphates, which crystallized in a monoclinic monazite. The XRD peaks shifted slightly toward higher angles with increasing Gd content, indicating that the lattice parameter slightly decreased with an increase in Gd content. The phosphors emitted the green light due to the transition from 5D4 to 7Fj (j=3−6) at 489, 543, 585, and 621nm, respectively. (La0.25Gd0.75)0.94Tb0.06PO4 showed the strongest emission intensity.
P‐247L: Late‐News Poster: Novel White‐Emitting Hybrid Electroluminescent Device Based on Organic Dye and Inorganic Phosphor
Authors: Satoh Toshifumi , Kobayashi Makoto , Kawamura Satoshi , Uchida Takayuki 
Published: January 2009

AbstractA novel white‐emitting hybrid electroluminescent (EL) device based on an organic dye and an inorganic phosphor has been developed. In this device, the organic dye is excited by the luminescence energy of the inorganic phosphor, and exhibits white luminescence from the three primary colors. We developed the EL device using organic dyes that consist of coumarin 6 and a 4‐(dicyanomethylene)‐2‐i‐propyl‐6‐(1,1,7,7‐tetramethyljulolidyl‐9‐enyl)‐4H‐pyran (DCJTB)‐doped phosphor layer. Furthermore, a RGB color panel of the organic‐dye‐dispersed inorganic EL device with red luminescence of high color purity was produced.
P‐129: The Effect of Front Dielectric Thickness on Luminous Efficacy in AC PDP with Auxiliary Electrode
Authors: Cho Kwan Hyun , Lee Sung‐Min , Choi Chung Sock , Choi Kyung Cheol 
Published: January 2009

AbstractThe dependence of front dielectric thickness on input power density, luminance, and luminous efficacy according to the voltage of the auxiliary pulse in an AC PDP with an auxiliary electrode was investigated. It was found that two important factors influencing the luminous efficacy due to variation of the front dielectric thickness. One is the range of the voltage of the auxiliary pulse within which the power density decreases, but the luminance slightly increases, which improve the luminous efficacy. The other is the transmittance reducing the luminance as front dielectric thickness increased, leading to a decrease in the luminous efficacy. In this work, considering these two factors, the luminous efficacy is maximized at a front dielectric layer thickness of 40μm.
P‐131: Discharge Characteristics of Extra Pixel Assistance Structured (EPAS) AC‐PDP
Authors: Son Chang‐Gil , Lee Sung‐Soo , Park Eun‐Young , Hong Sung‐Hee , Cho Guangsup , Choi Eun‐Ha 
Published: January 2009

AbstractWe have suggested an AC‐PDP with extra pixel assistance structure using a MgO layer made from nano‐powdered paste. This structure needs an own driving waveform at the end of conventional reset period for improvement of address discharge characteristics. It was demonstrated that the separated discharge space was coated by nano‐powdered MgO paste at rear plate for counter(X‐A) discharge between the sustaining and address electrodes. At this discharge, the priming particles can be supplied into the main discharge space. Therefore, address discharge characteristics can be expected to have faster response characteristics than those for the conventional structures of AC‐PDP.
P‐132: Influence of Closed Barrier Ribs on the Excited Xe Atom's Density and its Spatiotemporal Behavior in the Alternating Current Plasma Display Panel
Authors: Han Yonggyu , Oh Phil Yong , Son Chang Gil , Cho Guangsub , Choi Eun Ha 
Published: January 2009

AbstractThe spatiotemporal behavior of the excited Xe atom's density in the 1s5 metastable state has been investigated by the laser absorption spectroscopy in the alternating current plasma display panel with stripe and closed barrier ribs, respectively. The maximum excited Xe atom's densities for the closed and stripe barrier ribs are 1.45 × 1013 cm−3 and 1.28 × 1013 cm−3, respectively. The density and relative VUV efficiency over all spaces for the closed rib in not only higher but also its spatiotemporal behavior in more uniform than those for stripe one.
P‐252L: Late‐News Poster: Three Dimensional Spatiotemporal Behavior of Infrared and Visible Emission from Discharge Plasma of AC PDP
Authors: Cho Tae‐Seung , Chung Gu‐Hyun , Choi Young‐Do , Kim Jung‐Nam , Lee Byung‐Hak 
Published: January 2009

AbstractA test panel for three‐dimensional spatiotemporal observation in AC plasma display panel (PDP) has been successively fabricated and studied with ICCD camera. The frequency dependence of three‐dimensional spatiotemporal behavior has been experimentally investigated in sustain discharge. In addition, the weak discharge characteristics in reset period and two different discharge modes in address period will be discussed below.
P‐141: Effect of Modified Scan and Sustain Waveforms on Black Luminance and Address Voltage in an AC Plasma Display Panel
Authors: Jana Raj Kumar , Dutt Santanu Kumar 
Published: January 2009

AbstractAlthough the three Electrode Surface Discharge type AC PDP is the de‐facto standard in the Plasma TV industry, one parameter which researchers and manufacturers are working hard to improve is Dark Room Contrast Ratio. Poor DRCR is a result of the high Black luminance caused by strong reset discharge. Another parameter, which has seen a lot of activity, is the Address Voltage. This paper investigates the effect of increasing the negative bias voltage applied to the Scan (Y) electrode while reducing the voltage from sustain voltage level applied to the Sustain (X) electrode during the Reset period and address period. Under the optimum voltage and ramp conditions, the Black Luminance was found to have reduced by a factor of 8 and the Address Voltage reduced to the extent of 15 – 20 Volts as compared to conventional waveform. These improvements were tested and validated in the lab on 42″ SD Plasma Display Panels. The significance of this scheme lies in the fact that the improvement in picture quality as a result of Low Black Luminance and consequent improvement in the Dark Room Contrast Ratio did not lead to an increase in the cost of electronics. In fact a reduction of electronic costs is possible due to reduction in the Address Voltage by allowing the use of cheaper Address Driver ICs.
P‐142: A New Driving Technology for the Improvement of PDP Driving Margins in Single Sustain PDPs
Authors: Park Hyun Il , Park Chang Joon , Kim Sung Hwan , Shin Hee Jung , Kim Dae Hun , Cho Jang Hwan , Moon Seong Hak 
Published: January 2009

AbstractThe past Single Sustain Driving System had critical problems on both the VS (Sustain Voltage) and the VA (Address Voltage) margins. A novel method to overcome these deficiencies has been performed by separating the ground reference of the Y_SUS (Scan) and Z_SUS (Common) boards from that of the Control and Address boards, which results in a driving system that is achieved by designing it as a single board. This system is referred to as an FSS (Floating Single Sustain). The FSS driving system improved the VS and VA margin dramatically and simplified the PDP driving system configuration when compared to the conventional PDP driving system.
P‐153: Field Emission Properties of Dual Emitter in Planar Gate Structure
Authors: Lee Sun‐Hee , Yang D.‐W. , Kim K.‐B. , Kim D.‐J. 
Published: January 2009

AbstractIn this paper, we investigated the field emission properties of planar gate structure, which is the gate and cathode electrode (buffer electrode) formed on same face of glass. Emitters and buffer electrodes were formed by screen printing method, which has many advantages in a large size panel. CNT emitter was formed on both buffer electrodes. Bi‐polar pulses were applied to the buffer electrodes and high voltage of DC power was applied to the anode. In case of bi‐polar pulse for planar structure, electron beam spreads more than normal gate structure or diode structure. It noted that increasing emission uniformity at 5 inch panel of dual emitter in planar gate structure. Optimum panel structure could be carried out by the evaluation of field emission properties depending on buffer electrode line width and applied voltage. Finally, we expect that field emission lamp is used LCD‐BLU and general lighting of light source.
P‐154: Optimized Field Emission of Multiwalled Carbon Nantoubes
Authors: Lee Kyongsoo , Ju Byeong‐Kwon 
Published: January 2009

AbstractTo investigate the emission properties of carbon nanotubes (CNTs), an indium based cathode was formulated with various surface treatments. In this case, we can demonstrate the field emission properties of unalloyed CNTs as compared with the conventional screen‐printed method. We have demonstrated that the sprayed carbon nanotubes (CNTs) on the indium layer were vertically aligned by surface treatment methods such as taping and applying acritical bias field. From these emitter surfaces, the CNT can be turned on with a field as low as 1.4V/μm. An emission current density of 5mA/cm2 at 1.8V/μm can be attained.
14.4: Integrating Multi‐Touch Function with a Large‐Sized LCD
Authors: Bae Sang Hyuck , Yu Byung Chun , Lee Sangrae , Jang Hyung Uk , Choi Jongseong , Sohn Minho , Ahn InHo , Kang InByeong , Chung InJae 
Published: January 2009

AbstractMulti‐touch function is integrated with a 52″ LCM. IR image sensors detect touches around normal panel. A few IR image sensors are placed to detect touches. Triangulation, image processing technology and pattern recognition are used for touch algorithm. Positions of touch points are calculated simultaneously by using IR image sensors, IR light sources and a LCD panel. The number of touches and its area is used to perform multi‐touch functions. Multi‐touch LCD can also detect human gestures. At this work, map searching program is used for touch and gesture recognition. As a result, multi‐touch LCD shows its usefulness and it can replace conventional HCI device (mouse, keyboard).