bluuebunny/crossref_metadata_2025_split huggingface dataset:
P‐69: Study on Improvement of Luminous Efficacy in Pulse Driven LED
Authors: Arai Takahiro , Nakaya Yuta , Fukai Yuki , Igarashi Takuya , Sano Yuji 
Published: October 2012

AbstractLuminous efficacy of pulse driven LED in beginning of light emission was improved by reducing discharge of diffusion capacitance in the LED. The luminous efficacy was improved to 360 ∼ 421% in RGBW color LEDs respectively with increased emission and reduced power consumption.
P‐71: Synthesis and Photoluminescence Properties of Vertically Well‐aligned Zinc Oxide Nanostructures
Authors: Li Chaoyang , Wang Dapeng , Kawaharamura Toshiyuki , Li Zeming , Nitta Noriko , Furuta Mamoru , Hatta Akimitsu 
Published: October 2012

AbstractThe well‐aligned ZnO nanostructures were fabricated by multi‐gas annealing process at low temperature, from which intense blue‐green photoluminescence was observed. The novel low‐temperature mist chemical vapor deposition method using zinc acetylacetonate vapor improved crystallinity as well as developed into regrowth of ZnO nanostructures efficiently.
P‐72: Efficient Red, Green, and Blue QD‐LEDs Fabricated with the QD Transplanting Process on a Common Hole Transport Layer
Authors: Park Myeongjin , Cho Hyunduck , Lee Hyunkoo , Lee Donggu , Lim Jaehoon , Char Kookheon , Lee Seonghun , Lee Changhee 
Published: October 2012

AbstractWe demonstrate efficient red, green, and blue (RGB) quantum dot (QD)‐based light‐emitting diodes (QD‐LEDs) by using QD transplanting method on a common, vacuum‐deposited, hole transport layer. We can pattern RGB QD‐LEDs with a micrometer scale for full‐color QD‐LED displays. We can also demonstrate practicable quantum dot light‐emitting devices with RGB patterned pixels on unit devices as well as white light‐emitting devices for everyday applications.
P‐73: Properties of Different Cold Cathode on the Efficiency in FEDs
Authors: Khorami Alireza , Ghanbari Shirin , Mohajerzadeh Shamsedin 
Published: October 2012

AbstractThe threshold voltage of FEDs is mainly determined by evaluating the material of the cathode and also its conduction coefficient. This study focuses on the properties of different cold cathode materials of nanotubes on the threshold and also cell efficiency. The results indicate that by utilizing Indium Oxide pyramids with grain size in nano scale, increases cell efficiency.
P‐76: Resistive Switching Memory Device Based on Amorphous Al‐Zn‐Sn‐O Film for Flexible Electronics Application
Authors: Fan Yang‐Shun , Liu Po‐Tsun , Hsu Ching‐Hui , Lai Hsuan‐Ying 
Published: October 2012

AbstractWe have fabricated flexible resistive switching memory (RRAM) using Al‐doped zinc tin oxide (AZTO) as resistive switching layers. The AZTO RRAM with robust memory window over hundreds of switching cycles. Besides, a conceptual co‐operation scheme was also demonstrated between AZTO RRAM and thin film transistor (TFT) for flexible electronics application.
P‐79: Principal Component Analysis on Characterizing Full‐Color Electrophoretic Display
Authors: Lu Yen‐Hsing , Tien Chung‐Hao 
Published: October 2012

AbstractA methodology is introduced to characterize colorimetric performance of full‐color electrophoretic display. The concept of principal component analysis benefited simplifying the complicated hybrid color‐mixing system by means of one eigenspectrum for each RGB channel. Proposed model was validated to predict the chromatic feature with high accuracy (ΔEAVE_CIEDE2000<0.2). Due to its simplicity and invertibility, proposed technique will certainly has a promising impact on the color reproduction in emerging novel displays using hybrid color‐mixing system.
P‐148L: Late‐News Poster: Direct Photolithographic Color Filter for 14.1‐inch Flexible Color Electrophoretic Displays
Authors: Lai Yen‐Huei , Chan Chih‐Cheng , Hwu Keh‐Long , Huang Wei‐Ming 
Published: October 2012

AbstractA 14.1‐inch flexible color electrophoretic display (EPD) has been fabricated successfully with the white reflectivity of 23.4%, contrast ratio of 8:1 and NTSC of 3.14%. The flexible color EPD device, in the main, involves a‐Si thin‐film transistors (TFTs) on a plastic substrate, microcup electrophoretic film and a quad‐type color filter array pattern. To prevent the heat damage of EPD film and make the photolithography process possible, low temperature color resist have been developed, which requires only short pre‐baking step of 80°C. This enables the possibility to produce a quad‐type color filter array pattern directly on an EPD film. Here, we present a feasible and simple photolithography process to prepare color filter for color EPD application.
P‐149L: Late‐News Poster: Uniaxially Cracked ITO on PET Substrate and its Application in Flexible Displays
Authors: West John L. , Cakmak Miko , Huang Tsang‐Min , Lee Da‐Wei 
Published: October 2012

AbstractUniaxially cracked indium tin oxide (ITO) on a polyethylene terephthalate (PET) substrate and its application in replacing photolithography to make stripe ITO electrodes were developed. An ITO coated PET (ITO/PET) film uniformly and controllably rolled and uniaxially cracked. This procedure produced fine, parallel cracks in the ITO separated by 5∼10 microns. The crack separation and electrical isolation of the resulting long and thin ITO electrodes was enhanced by etching with dilute hydrogen chloride (HCl) or by uniaxially stretching. Heating and stretching proves the most effective, producing a crack width of about 0.05 microns and a differential conductivity (measured parallel and perpendicular to the cracks) in the resulting films greater than two orders of magnitude. A polymer dispersed liquid crystal (PDLC) shutter was prepared using the cracked ITO/PET film as one substrate. The addressed lines were defined by the contact electrode. The sharpness of the line edges increased as the drive frequency was increased. This PDLC prototype demonstrated how photolithographic etching of ITO or printing of conducting polymer could be replaced by controlled cracking of ITO to produce the line electrodes required for flexible, passive matrix displays and in related flexible electronic applications.
P‐159L: Late‐News Poster: A Liquid Crystal Based Contact Lens Display Using PEDOT: PSS and Obliquely Evaporated SiO2
Authors: De Smet Jelle , Avci Aykut , Joshi Pankaj , Cuypers Dieter , De Smet Herbert 
Published: October 2012

AbstractAn active spherically conformed liquid crystal cell is presented comprising PEDOT:PSS as a transparent conductive layer and obliquely evaporated SiO2 as an alignment layer. To tackle compatibility issues with the SU8 processing needed for the spacers, an additional buffer layer was included in the fabrication process. The electro‐optic response is inspected closely and a contrast measurement is given.
P‐84: Thermal Switchable Bistable Cholesteric‐Blue Phase Liquid Crystal Display
Authors: Wang Chun‐Ta , Jau Hung‐Chang , Lin Tsung‐Hsien 
Published: October 2012

1. AbstractThe study investigates the thermal switchable bistable cholesteric‐blue phase liquid crystal display. Both the CLC phase and the blue phase can stably exist at room temperature and be switched to each other using temperature‐controlled processes. In a homogeneous aligned sample, two stable states, CLC with a planar alignment and blue phase with a uniform lattice distribution, reflect light of wavelengths 480‐510nm and 630nm, respectively, as determined by the corresponding Bragg's reflection conditions.
P‐87: Ultra‐High Transmittance Blue Phase LCD with Double In‐Plane Switching Electrodes
Authors: Chen Chao Ping , Su Yikai , Chen Yanqing , Sun Yubao , Zhang Zhidong 
Published: October 2012

AbstractA blue phase liquid crystal display (BPLCD) featuring double in‐plane switching (DIPS) electrode structure is proposed. The DIPS electrodes on the top and bottom substrates are arranged in a staggered manner for eliminating dead zones formed above the electrodes. As a result, aperture ratio is remarkably enlarged except for the thin film transistor (TFT) region. At meantime, a low driving voltage (∼18V) and high transmittance (∼90%) BP‐LCD can be achieved.
P‐89: Fast‐switching and Hysteresis‐free Polymer‐stabilized BPIII Device
Authors: Chou Kuan‐Han , Chiou Ji‐Yi , Yang Kai‐Xian , Hsien Yi‐Chun , Wu Che‐Kai , Chen Hui‐Yu 
Published: October 2012

AbstractA fast‐response polymer‐stabilized BPIII device without memory effect and hysteresis effect is demonstrated in this study. The structure of BPIII is stabilized in a wide temperature range more than 10°C by polymer network By adopting in‐plane switch, the bright and dark states can be switched reversely in ∼0.9 ms. Compared with the other two cubic blue phases, the polymer‐stabilized‐BPIII possesses a great potential for application on fast display.
P‐90: Surface Pinning Effect on Blue‐Phase Liquid Crystal
Authors: Park Hye Ryung , Lee Jung Jin , Jeong Heon , Nayek Prasenjit , Lee Seung Hee , Park Heung Shik , Lee Hyeok Jin , Kim Hee Seop 
Published: October 2012

AbstractThis paper reports surface treatment effect on liquid crystalline blue phase morphology and electro‐optical performances at various temperatures. We have succeeded to achieve homogeneous monodomain blue phase morphology by surface treatment. Operating voltage and hysteresis of the proposed device is greatly reduced compared to the non surface treated cell, owing to dramatic increase in Kerr constant. Uniform mono domain morphology has better electric field withstand capability so that its original texture restored after electric field addressing.
P‐91: Hysteresis Reduction in EO Characteristics of Photoaligned IPS‐LCDs Using Polymer‐Surface‐Stabilized Method
Authors: Nagatake Yohei , Inoue Shoji , Limura Yasufumi 
Published: October 2012

AbstractAlthough an in‐plane‐switching display mode has been known to show excellent image qualities, further improvement of them has been still required in a display market. As well known, a rubbing method is one of the factors to degrade the image quality, and so alternative methods should be investigated. In this paper, we choose a photo‐alignment (PA) method as the alternative and the solution of an image sticking problem arising from the weak anchoring nature, which impedes practical use of the method, is investigated by applying a polymer‐surface‐stabilized method to a PA method.
P‐92: Distinguished Student Poster Paper: 2‐ms Nematic Liquid Crystal Mode without Alignment Layers
Authors: Kim Jung‐Wook , Song Dong Han , Kim Ki‐Han , Lee Ji‐Hoon , Yoon Tae‐Hoon , Rho Soon Joon , Lee Hyeok Jin , Kim Heeseop 
Published: October 2012

AbstractWe propose a 2‐ms nematic LC mode without alignment layers. Three‐terminal electrode structure is used to apply in‐plane and vertical fields to the LC cell. Initially, nematic LCs are randomly aligned. The dark state and bright state are obtained by applying vertical and in‐plane fields to the cell, respectively. We achieved the total response time of less than 2 ms in the proposed mode.
P‐94: Nano‐particle Induced VA‐LCD
Authors: Choi Young Eun , Oh Sang Hoon , Jo Mi Hyeon , Jang In Won , Kim So Eun , Jeong Kwang‐Un , Lee Seung Hee , Song Won Il , Chang Hak Seon , Shin Ki Chul , Kim Hee Seop 
Published: October 2012

AbstractA nano‐material called POSS (Phenethyl‐Poly Oligomeric Silsesquioxane) provides vertical alignment of LC on substrate without using conventional polymer type of vertical alignment layer. However, it still has many problems like aggregation because of high concentration doping. We synthesise new type of POSS which shows good dispersion with LC and found out that even very low 0.1 wt % into LC, uniform vertical alignment is achieved through diffusuion process from bulk LC to surface of the substrates.
P‐137: Measurement of the LC Pretilt Angle and Polar Anchoring in Cells with Homogeneous and Inhomogeneous LC Director Configuration and Weak Anchoring on Organosilicon Aligning Films
Authors: Belyaev Victor V. , Solomatin Alexey S. , Chausov Denis N. , Gorbunov Artem A. 
Published: October 2012

AbstractNew optical and electro‐optical methods of LC director average tilt angle measurement are described in LC cells with homogeneous and inhomogeneous LC director distribution. The LC pretilt on both LC substrates can have the same or opposite direction. Both LC pretilt angle and polar anchoring energy values have been measured for both polar and weak polar liquid crystal materials on aligning films of organosilicon compounds (OC) of different molecular structure. The method developed can be used also in optical compensator design.
P‐97: Electrode Structure for High Transmittance IPS Mode
Authors: Song Dong Han , Kim Ki‐Han , Lee Ji‐Hoon , Yoon Tae‐Hoon 
Published: October 2012

AbstractWe propose a new electrode structure using three voltage levels instead of two for high transmittance in the in‐plane switching liquid crystal mode. We confirmed that, by using the proposed structure, the transmittance of a LC cell can be increased from 29 % to 35 % at a slightly lower operating voltage. The transmittance of the proposed mode is higher than the conventional FFS mode.
P‐99: Fast Nematic Liquid Crystals (LC) Device Using Hybrid driving Scheme
Authors: Srivastava Abhishek K. , Fan Fan , Wang Xiaoqian Q. , Chigrinov Vladimir G. , Kwok Hoi Sing 
Published: October 2012

AbstractWe present a high‐resolution nematic LC cell with 3‐electrodes and a driving scheme. This allows simultaneous application of vertical and in‐plane electric fields to the LC layer. Both the switching ON and OFF time is less than 400 μs thus the operating frequency can be high up to 1 kHz.
P‐100: Inverse Four Domain Twisted Nematic Liquid Crystal Mode Generated by Photo‐Alignment Method
Authors: Lee Seul Gee , Jo Soo In , Park Jae‐Hong , Lee Hyeokjin , Shin Sung‐Tae , Lee You‐Jin , Yu Chang‐Jae , Kim Jae‐Hoon 
Published: October 2012

AbstractWe fabricated an inverse four domain twisted nematic (IFDTN) mode using a stacked photo‐alignment layer enhancing the azimuthal anchoring energy. The strong anchoring energy generates the stable 4D twist structures under an applying voltage. High transmittance and contrast device is achieved without complex rubbing processes.
P‐101: The Reduction of Temperature Effect on Cholesteric Liquid Crystal Display
Authors: Chen Kuan‐Ting , Chao Yu‐Ju , Lai Chun‐Chun , Liu Po‐Wen , Tsai Yi‐Shou , Lu Jhih‐Ping , Hsu Chien‐Chih , Lee Huei‐Lun , Lin Shu‐Hua 
Published: October 2012

AbstractThis study reveals that the environment temperature will affect the operating voltage and the image quality of ChLCD. The data demonstrate that with the decrease of temperature the operating voltage will be increased and we found that we can maintain the operating voltage by increase the addressing time.
P‐104: Refractive Index Distribution Analysis of Liquid Crystal GRIN Lens for Autostereoscopic 2D/3D Switchable Displays
Authors: Sugita Tatsuya , Oka Shinichiro , Naganuma Tomohiko , Saito Terunori , Komura Shinichi , Miyazawa Toshio 
Published: October 2012

AbstractThe refractive index distribution of LC GRIN lenses for autostereoscopic 3D displays was investigated. It was clarified that the refractive index distribution forms a parabolic function of the optimum lens conditions. We achieved a minimum crosstalk of 0.6% in an autostereoscopic 3D display with an LC GRIN lens.
P‐105: Fast Switchable Grating Based on Ferroelectric Liquid Crystal
Authors: Ma Ying , Guo Qi , Srivastava Abhishek , Hu Wei , Chigrinov Vladimir , Kwok Hio Sing 
Published: October 2012

AbstractIn this article, a method for the fabrication of Ferroelectric liquid crystal switchable grating based on photo‐alignment technique has been proposed. The first order diffraction efficiency is 86% and response time is 69 μs, which is 10 times faster than the existing switchable gratings. Maximum performance can be achieved at the electric field of 7V/μm.
P‐106: Future Generation Ultra‐Fast Liquid Crystal Light Shutters
Authors: Komitov Lachezar , Hegde Gurumurthy , Kolev Dimitar 
Published: October 2012

AbstractBy proper assembling and electronic driving of two parallel single nematic liquid crystal cells with planar and vertical alignment of the liquid crystal molecules, respectively, arranged in a double cell, ultra‐fast switching between bright and dark states, back and forth, is achieved.
P‐107: Characterization and Development of Phase Modulated Liquid Crystal Devices using ZnO Nano‐rod Array Electrodes
Authors: Li Qing , Yan Jing , Cui Yongyang , Chen Jing , Lei Wei 
Published: October 2012

Abstract1D ZnO nano‐rod is grown with by aqueous thermal decomposition method on ITO substrate in experiment which can be used in phase modulated LC devices. Two new devices with ZnO nano‐rod array electrode are proposed in this paper. One is the phase modulation with homogeneous LC device and the other is the fast‐response adaptive blue phase liquid crystal microlens. For ZnO‐LC phase modulation, the electric field distribution and phase modulation with influence of parameters are simulated analysis. For ZnO‐LC microlens, gradient electric fields are generated and lens‐like phase profile obtained based on Kerr effect of BPLC. Its focus can be tunable by either changing the applied voltage or selecting the polarized direction of the incident light. The devices have potential application in micro photonic components.
P‐111: Improved Performances in Phosphorescent Organic Light‐emitting Diodes using Solution‐processed Vanadium Pentoxide as a Hole Injection Layer
Authors: Lee Hyunkoo , Kim Young Kwan , Lee Changhee 
Published: October 2012

AbstractWe report that the solution‐processed vanadium pentoxide (V2O5) layer can be utilized as an effective and stable hole injection layer (HIL) in organic light‐emitting diodes (OLEDs) instead of polyethylene dioxythiophene:polystyrenesulfonate (PEDOT:PSS) or thermally‐evaporated metal oxides. The device with the V2O5 HIL shows much lower driving voltage and improved stability compared with other devices.
P‐112: Highly Efficient Electron Injection Layer of LiF/Yb Bilayer for Top‐emitting Organic Light Emitting Diodes
Authors: Ahn Hyuk , Lee Hyunkoo , Yang Jungjin , Lee Changhee 
Published: October 2012

AbstractWe report highly efficient electron injection layer (EIL) of LiF/Yb bilayer for top‐emitting organic light emitting diodes. The device with the LIF/Yb bilayer shows reduced operating voltage and enhanced efficiencies compared to other two devices with Yb and LiF/Al due to the reduced electron injection barrier, resulting in better charge balance. The device with the LiF/Yb bilayer shows high luminous efficiency of 53.2 cd/A and external quantum efficiency of 16.9%.
P‐115: Driving Voltage Reduction through Non‐radiative Charge Recombination Interfaces in Organic Light‐Emitting Diode
Authors: Son Young Hoon , Jeon Woo Sik , Lim Dae Chul , Kwon Jang Hyuk 
Published: October 2012

AbstractWe report a new way for the driving voltage reduction through non‐radiative charge recombination interfaces in organic light‐emitting devices (OLEDs). Non‐radiative charge recombination interfaces made between a hole transporting layer and a deep lowest unoccupied molecular orbital (LUMO) electron transporting layer results in significant increase of hole current conduction, which finally could give us voltage reduction in OLEDs. Such voltage reduction is attributed to strong columbic interaction at charge recombination interfaces. Voltage reduction from 5.2 to 4.3 V at 1000 cd/m2 in fluorescent blue devices is demonstrated with this our concept. Our suggested structure of non‐radiative charge recombination interfaces can be very useful for many practical organic semiconductor device applications.
P‐116: Efficiency Enhancement in ITO‐free Green Organic Light Emitting Diodes Utilizing Nano‐Composite Scattering Films
Authors: Chang Hong‐Wei , Kim Yong Hyun , Lee Jonghee , Hofmann Simone , Lüssem Björn , Müller‐Meskamp Lars , Leo Karl , Wu Chung‐Chih 
Published: October 2012

AbstractWe demonstrate significant efficiency enhancement of ITO‐free OLEDs by combining both the high‐conductivity conducting polymer PEDOT: PSS as the transparent electrode and the solution‐processed nano‐composite scattering films as optical extraction layers. The external quantum efficiency (EQE) of ITO‐free device can be significantly enhanced by a factor of 1.8 at 1000 cd/m2.
P‐117: High Efficient Color Conversion Layers for White Organic Light‐Emitting Diodes using Polystyrene Nanosphere Monolayers
Authors: Ho Yu‐Hsuan , Liang Hsun , Chang Yung‐Ting , Tian Wei‐Cheng , Chu Chih‐Wei , Chen Chin‐Ti , Wei Pei‐Kuen 
Published: October 2012

AbstractWe demonstrated a highly efficient color conversion layers (CCLs) by using nanosphere arrays for white organic light‐emitting diodes. The introduced periodical nanospheres not only help extract the confined light in devices, but also increase the effective light path to achieve more efficient color conversion. By applying the nanospheres patterned CCL on a PVK‐based phosphorescent blue OLED, 137% color conversion ratio had been achieved, which was 2.68 times higher than flat CCL. The resulting luminous efficiency of white device with patterned CCL (20.97 cd/A, 1000 cd/m2) was twice higher than the efficiency of the flat device (10.26 cd/A, 1000 cd/m2).
P‐118: Improving Balance of Carrier Mobilities by Doping a Carrier Trapper to Achieve Efficient Solid‐State Light‐Emitting Electrochemical Cells
Authors: Liao Chih‐Teng , Su Hai‐Ching , Chen Hsiao‐Fan , Wong Ken‐Tsung 
Published: October 2012

AbstractWe demonstrate improving balance of carrier mobilities in neat‐film light‐emitting electrochemical cells (LECs) utilizing a cationic near‐infrared laser dye as the carrier trapper. EL measurements show that the peak EQE reaches 12.75%, representing a 1.4 times enhancement in device efficiency as compared to that of the undoped neat‐film LECs.
P‐121: Colorful Reflective Organic Light Emitting Device without Bias
Authors: Chiu Tien‐Lung , Hsiao Yi‐Peng , Ko Kai‐Hao , Lai Chih‐Ming , Lee Jiun‐Haw 
Published: October 2012

AbstractUnder a white ambient light illumination and without bias, the color‐cathode organic light emitting device (OLED) shows the various reflection colors to display the information by utilizing the internal interference cavity inside rear cathode. In this report, we employed a high conductivity metal‐organic material, tris(8‐hydroxyquinolinato)aluminum (Alq3) doped with Ag nanoparticles, to be the interlayer of this interference cavity cathode. Its good conductivity is leading to a comparable electrical performance with that of reference device. There is a small increase of driving voltage 0.5V at 100 mA/cm2 for color‐cathode OLED. In addition, the thicknesses of this interlayer inside this interference cavity varies to 40, 60, 80 and 100 nm to alter the reflection colors such as orange, purple, blue and green.
P‐122: Luminous and Conversion Efficiency Improvement in OLED/OPV Tandem Device with Omnidirectional Antireflection Nanopillars
Authors: Ho Yu‐Hsuan , Liu Shun‐Wei , Liang Hsun , Chen Fang‐Chung , Tian Wei‐Cheng , Wei Pei‐Kuen 
Published: October 2012

AbstractWe present an antireflection structure consisted of irregular nanopillars to reduce the substrate surface reflection of OLED/OPV hybrid device, which both the luminous efficiency and energy conversion efficiency had great improvement. The nanopillars were made on flexible polycarbonate substrates by using nanoimprint method with anodized aluminum oxide template. The average reflectivity of the patterned polycarbonate substrate in visible wavelength was reduced to 3.3% in the optimized case. With the antireflection structure, the luminous intensity for OLED was improved 49.8% as compared to the device with flat substrates. The power conversion efficiency for OPV was improved from 0.48% to 0.55%, which had 14.6% enhancement at normal incidence.