Student Paper Award Announced!!

Session Index

Display Technology

Poster Session 2
Thursday, Dec. 4, 2014  16:40-17:50
Paper No.  2014-Thu-P0702-P001
Shao-Yu Lin Inverted Tandem Organic Light Emitting Diodes with WO3/Ag/WO3 Multilayer as Intermediate Connecting Layer
Shao-Yu Lin,Shen-Bin Chen,Wen-Chang Chang,Kuan-Ting Chen,Shun-Wei Liu,Chih-Chien Lee,

In this report, an inverted tandem organic light-emitting device (OLED) with the optimizations of connecting layer configurations has been studied. By comparing three different materials, a highly conductive connecting layer, WO3/Ag/WO3 was obtained for efficient tandem OLED.

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Paper No.  2014-Thu-P0702-P002
Yu-Hsiang Hung Carbazole-based Blue Phosphorescent Organic Light-emitting Device
Yu-Hsiang Hung,Tien- Lung Chiu,Jau-Jiun Huang,Man-Kit Leung,Jiun-Haw Lee,Chi-Feng Lin,

We fabricated a series of blue phosphorescent organic light emitting devices (OLED) by using 9-(2-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)-9H-carbazole (o-CbzBz) as the host of the emitting layer. In addition, the dopant material is Bis[2-(4,6-difluorophenyl)pyridinato-C2,N](picolinato) iridium(lll) (FIrpic) . In this study, we investigate the performance of o-CbzBz OLEDs with various FIrpic concentrations. At the present, the 33.68 cd/A of current efficiency can be obtained at the 9% doping ratio.

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Paper No.  2014-Thu-P0702-P003
Chia-Yu Wu Color Filter with Flexible Substrate for Process Verification
Kai-Sheng Shih,Yi-Shou Tsai,Chia-Yu Wu,Yu-Chun Lin,

White organic light-emitting diode (WOLED) device combined with color filters (CFs) has become one of promising methods to produce full color AMOLED displays. To make a high resolution of the flexible CFs element is one of the key technologies. Currently, we have been fabricated 6-inch resolution 266ppi, color saturation NTSC ≧ 70%, transmittance≧ 40% of the color filter on a flexible substrate , and bending test to 7,500 times (bending radius of 7.5mm), RGB sub-pixel components without damage or crack case.

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Paper No.  2014-Thu-P0702-P004
Shih-Hua Chen Spectral design and evaluation of OLEDs as light sources
Shih-Hua Chen,Hsiang-Chen Wang,

Organic light-emitting diode (OLED) will possibly become the mainstream in lighting technology given that its features, such as self-luminosity, deflectivity, and penetrability, are different from those of common light sources. Studies on OLEDs have generally focused on the luminous efficiency of its components; however, selecting an optimum color mixing spectrum for OLEDs to apply on illumination has seldom been discussed. In this study, color mixing is conducted by combining two and three colors based on color mixing theory. Through screenings that employ related evaluation techniques such as chroma standard and color rendering, we identify a set of optimum color mixing spectra at different correlated color temperatures that will be evaluated via the color rendering index (CRI), the color quality scale (CQS), and the feeling of contrast index (FCI).

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Paper No.  2014-Thu-P0702-P005
Ya Han Lin Effect of Nitrogen Doping on Negative Bias Illumination Stress of Zinc Oxide Thin Film Transistors
Ya Han Lin,

In this study, the nitrogen-doped zinc oxide (ZnO:N) was adopted as the channel layer material of TFTs in order to enhance bias reliability. The optimized ZnO:N TFT exhibited the mobility of 7.62 cm2/V-s with a superior stability, the Vth shift was below 0.2 V under NBIS (-2.5MV/cm, 450nm illumination)

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Paper No.  2014-Thu-P0702-P006
Junewen Chen Non-Contacted Panel Control System
Junewen Chen,Yi-Hui Chen,Guo-Hao Sun,Hsin-Ku Lin,Chia-Wei Chiang,

We have developed three none real contacted touch panel systems that can operate reliably and sanitarily. A customized designed and manufactured conventional touch panel can operate non-contacting and at the distance up to 2cm. The other types are infrared LEDs net type and position detection optical types, can operated at larger distances.

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Paper No.  2014-Thu-P0702-P007
Ko-Ting Cheng Bistable Cholesteric textures in chiral azobenzene-doped liquid crystals
Ko-Ting Cheng,Andy Ying-Guey Fuh,Zong-Han Wu,

Chiral-azobenzene is a chiral dopant with optically tuned HTP that results from the photo-isomerization between trans- and cis-isomers via exposure to UV or visible light. Regarding free energy, LCs tend to be stable at planar (focal conic) textures when pitch length is elongated (shortened) by exposure to UV (visible) light.

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Paper No.  2014-Thu-P0702-P008
Chen Haiyu 2D/3D Switchable Time-multiplexing Autostereoscopic display with PDLC Film
Chen Haiyu,He Jieyong,Liang Haowen,Su Jianbang,Wang Jiahui,Zhou Jianying,

A method to realize 2D/3D switchable time-multiplexing autostereoscopic display with PDLC film is introduced. Quantitative measurements of luminance and crosstalk are executed to evaluate the optical performance on the display from PDLC film. It is also proposed that the PDLC should be synchronized with the backlight and screen.

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Paper No.  2014-Thu-P0702-P009
Guan-Jhong Lin Eco-Displays: Cholesteric Liquid Crystal Components Driven by a Three-Terminal-Electrode Architecture with a Long-Term Unplugged State
Guan-Jhong Lin,Yu-Ting Lin,Tien-Jung Chen,Jin-Jei Wu,Ying-Jay Yang,

The electro-optical properties of cholesteric liquid crystal display driven by a three-terminal-electrode architecture are investigated. The developed device has two stable states, the standing-helix and lying-helix arrangements, achieved by the in-plane and vertical fields, respectively. Further, the long-term bright state of the device is kept without continuously supplying voltage.

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Paper No.  2014-Thu-P0702-P010
Z. T. Wu Study of Electro-Optical Properties of Optically Compensated Bend Liquid Crystal Cells with Polymer Networks
Z. T. Wu,B. R. Lin,G. J. Lin,T. J. Chen,J. J. Wu,Y. J. Yang,

Optically compensated bend (OCB) cells are fabricated by doping the cross-linking monomer in nematic liquid crystals to control the pretilt angle with respect to the substrate surface. With the polymerization process, the twist structure in the initial state is achieved, which can reduce the warm-up time of the OCB cells.

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Paper No.  2014-Thu-P0702-P011
S. Y. Tsai Effect of Cell Thickness on Optoelectric Properties of Blue Phase Liquid Crystal Displays
S. Y. Tsai,G. J. Lin,S. S. Hu,T. J. Chen,Y. J. Yang,J. J. Wu,

The cell thickness on optoelectric properties of blue phase liquid crystal displays is investigated and the relationship between the phase retardation (φ) and driving voltage (V) is measured. Using the φ–V relation, the Kerr constant is obtained, and different thicknesses will affect the Kerr constant.

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Paper No.  2014-Thu-P0702-P012
Cheng-Che Wu Characteristic of Flexible Touch Sensor Film after De-bonding Process
Cheng-Che Wu,Chi-Wen Jung,Chen-Chu Tsai,

This paper reports the characteristic of flexible touch sensor film after de-bond between de-bonding layer and flexible substrate by differential pressure method. This method is easy, fast and safe for touch sensor film, which tact time is less than 1 sec and resistance variation increase only 85 Ohm after de-bond.

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Paper No.  2014-Thu-P0702-P013
Mao Kun Huang Electro-optical Properties of Polymer Stabilized Blue Phase Liquid Crystals
Mao Kun Huang,Chi Yen Huang,

Abstract – We investigate the electro-optical properties of the polymer stabilized blue-phase (BP) liquid crystals. The doped monomers accumulate at the defect cores, therefore stabilize BP structure and then increase the temperature range of BP state. The doped monomer also induces the appearance of spherical BP phase, which is not observed in the pristine BP mixture.

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Paper No.  2014-Thu-P0702-P014
Jiahui Wang A Glass-free 3D Interactive System Based on the Leap Motion Controller and a Full HD Auto-stereoscopic Display
Kunyang Li,Jiahui Wang,

A glass-free 3D interactive system involving a Leap Motion Controller and a full HD auto-stereoscopic display is presented. The system is capable of achieving high resolution 3D image, high accuracy, high speed and good robustness. Control of a virtual 3D keyboard is demonstrated to test the system

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Paper No.  2014-Thu-P0702-P015
Jieyong He Quantified resolution evaluation of auto-stereoscopic display
Jieyong He,Haiyu Chen,Yining Li,Haowen Liang,Jiahui Wang,Jianying Zhou,

The article introduces a quantified method to evaluate the perceptual resolution by comparing the contrast between the 2D and 3D displaying on an experimental device, which provides an objective evaluation on an auto-stereoscopic display that has not been standardized.

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Paper No.  2014-Thu-P0702-P016
Wang-Jhe Huang Radio Frequency Identification Demodulator of Amorphous Silicon for Liquid Crystal Display
Guang-Ting Zheng,Po-Tsun Liu,Wang-Jhe Huang,

We propose a wireless radio frequency identification system demodulator circuit which is used with amorphous silicon thin film transistor as the driving device. The function is analog data receiving and changes to digital data to back-end digital circuits. The suitable frequency range consistent with the definition of the frequency identification system (135KHz ~ 13.56MHz). By the feasibility of this circuit, it is possible that all digital circuits utilize amorphous silicon transistors gradually and replace the general bonding of IC. It’s not merely increases productivity significantly, but also achieves target that the RFID system on panel.

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Paper No.  2014-Thu-P0702-P017
Chih-Jui Chang Investigation of Stability for Amorphous Indium-Gallium-Zinc-Oxide Thin-Film Transistors by in situ Nitrogen Doping
Chih-Jui Chang,

We have investigated on the characteristics and the stability of amorphous indium gallium zinc oxide (a-IGZO TFTs) by nitrogen doping. Under deposition condition and annealing temperature, the optimized device showed the mobility of 19.21 cm2/Vs with subthreshold swing of 0.26 V/decade. Nitrogen doping improves the stability of indium gallium zinc oxide thin-film transistors and maintains the ease of device manufacture. These results showed the application potentials for flat panel display technology.

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Paper No.  2014-Thu-P0702-P018
Junewen Chen The Analysis and Simulation of a Non-Hardware 3D Image Display
Junewen Chen,Hsin-Ku Lin,Chia-Wei Chiang,Guo-Hao Sun,Yi-Hui Chen,

We have developed a non-hardware three dimensions image display system. The images can be visualized as a 360° display and the system can also be interactively made to display the models in various poses. The analysis and the FLUENT software simulation are present in this article.

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Paper No.  2014-Thu-P0702-P019
Wu Jin Jei A Study of the Plane-Parallel Aligned Liquid Crystal Microlens
LinYun Tzu,LinGuan Jhong,ChenTien Jung,YangYing Jay,WuJin Jei,

A liquid crystal (LC) microlens with large dynamic focal length range at low operating voltage are demonstrated. As the voltage is increased, the phase retardation resulting from the center and edge is decreased and an effective focal length can be obtained. The electro-optical property is demonstrated.

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Paper No.  2014-Thu-P0702-P020
Kai-Ming Yang Design of Exit Pupil Expander
Kai-Ming Yang,Chi-Hung Lee,

A new type exit pupil expander applied to laser scanning projector has been proposed in this letter. We describe the design method of MLA to achieve higher uniformity, and it can fit to any system which used laser as the light source.

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Paper No.  2014-Thu-P0702-P021
Dian-Chiang Liu Naked Titmus Stereo Test Book
Dian-Chiang Liu,Chien-Yue Chen,Hsien-Chang Lin,

Polarized type Titmus stereo test book is used for testing stereopsis nowadays. But wearing the polarized glassed is not convenient and comfortable. To improve this problem, this study proposes a naked Titmus stereo test book to help people testing their stereopsis easily.

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Paper No.  2014-Thu-P0702-P022
Chung-Min Hsieh Moiré Fringe Simulation in a Touch Panel Display by the Fourier Transform
Chung-Min Hsieh,Shang-Hoang Wong,Wen-Sheng Huang,Bau-Jy Liang,Li-Chien Lin,Pi-Fang Hung,

A easier and less time comsuming simulation method using the Fourier transform was proposed to analysis moiré fringe in a touch panel display. The fringe was formed by an ITO layer and a color filter. We also changed the contrast of patterns in the simulation, in order to provide clearer moiré fringe.

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Paper No.  2014-Thu-P0702-P023
Dong Bao To Breath-Figure Fabricated Microlens Array Thin Films for Enhancing Light Extraction of White Light Organic Light Emitting Diodes
DongBao To,HsuChen Chen,

This paper presents a facile and low cost method to fabricate poly-dimethylxiloxane (PDMS) microlens arrays (MLAs) thin films for enhancing light extraction of white light organic light emitting diodes (WLOLED). The MLAs thin films were obtained by molding from breath figures PS (polystyrene) molds. One of the PDMS MLAs thin films was attached to the backside of the ITO substrate of a WLOLED to increase light out-coupling from the substrate mode. The maximum out-coupling efficiency improvement was 48%. The breath figures technique presented in this work is a mask-less fabrication technique which is useful to fabricate large area MLAs thin films to enhance light out-coupling efficiency of a WLOLED.

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