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Display Technology, Journal of

Issue 8 • Date Aug. 2012

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Displaying Results 1 - 17 of 17
  • [Front cover]

    Page(s): C1
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  • Journal of Display Technology publication information

    Page(s): C2
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  • Table of contents

    Page(s): 431
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  • [Blank page]

    Page(s): 432
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  • Quartz-Blazed Grating Applied on Autostereoscopic Display

    Page(s): 433 - 438
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (478 KB) |  | HTML iconHTML  

    By applying reactive ion etching (RIE) to a blazed grating on quartz substrates, the grating can be utilized as a splitter in autostereoscopic displays. Furthermore, a solution for the pattern alignment on transparent substrates is also proposed. By measuring the diffraction efficiency and crosstalk between the left and right fields of view (FOV), the capability of the element to deliver stereoscopic images is demonstrated. View full abstract»

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  • Photoexcitations From Intrachain and Interchain Excitons of Surface Plasmon Mediated Conjugated Polymers for PLED

    Page(s): 439 - 443
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (928 KB) |  | HTML iconHTML  

    Picosecond time-resolved spectroscopy studies are performed on surface plasmon (SP) mediated conjugated polymers. Huang-Rhys factor and photoluminescence (PL) decay time at low temperature were unchanged with the respect to thickness of Ag nanostructures due to a decrease in the surface plasmon coupling rates (Okamoto , Appl. Phys. Lett., vol. 87, 07112, 2005). However, Huang-Rhys factor and PL decay time at room temperature were increased with respect to the thickness of the Ag nanostructures. Relatively strong emission from the interchain excitons of surface plasmon (SP) mediated conjugated polymers in the film-like Ag nanostructure was verified by PL decay dynamics from time-resolved photoluminescence (TR-PL) measurement. View full abstract»

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  • Self-Assembled Microlens on Top of Light-Emitting Diodes Using Hydrophilic Effect for Improving Extraction Efficiency and Increasing Viewing Angle

    Page(s): 444 - 449
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (913 KB) |  | HTML iconHTML  

    In this paper, we propose a self-assembled microlens on top of light-emitting diodes (LEDs) based on hydrophilic effect under ultraviolet (UV)/ozone treatment to improve extraction efficiency and to increase viewing angle. The LED chip was encapsulated by polydimethylsiloxane (PDMS) (n=1.44) before the fabrication process of microlens. The microlens was made of transparent negative photoresist SU-8 (n=1.63). The SU-8 photoresist became more hydrophilic after UV/ozone treatment. After hydrophilic zones were produced by using shadow masks and UV/ozone, the substrate with hydrophilic zones was dipped in and out of diluted SU-8 photoresist solution with slow and constant velocity. Meanwhile, a 200- microlens was formed by self-surface tension and cohesion of diluted SU-8. Finally, microlens was hardened after UV curing. This approach is cost effective and low time-consuming. It did not require photo masks, heating, or etch-transfer processes. It's a new fabrication method that can be easily applied to opto-electronic devices. Integrated with LED, microlens can improve extraction efficiency 28% in total power and increase viewing angle 17 degree. View full abstract»

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  • Cold Cathode Sputtering in Glow Discharges

    Page(s): 450 - 456
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (548 KB) |  | HTML iconHTML  

    A constant challenge for industrialists in cold cathode technologies is the selection of a cathode material which exhibits suitable properties in order to improve performance. One particularly important aspect of performance is the sputter erosion of the cathode, which can lead to lamp failures. Traditionally, refractory metals have been favored for their high densities and energies of sublimation, which result in low sputter yields according to the theory due to Sigmund, and in experiment. However, this paper presents a simple theory which shows that the primary sputter yield is only one step in the liberation of sputtered material from the electrode. The energy of sublimation in fact plays an important role in the energy distribution of the sputtered material. Also, collisions in the bulk gas and the voltage characteristics of the cathode dark space should be taken into consideration for calculating the flux of liberated material. The paper presents a heuristic model of cold cathode sputtering in glow discharges with a view to elucidating the underlying physics in the process. The theory results in a reappraisal of electrode material properties that differs from the traditional view. View full abstract»

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  • A Swept Volume Display System Using a Planetary Gear Structure Based on Parallel Moving

    Page(s): 457 - 463
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1356 KB) |  | HTML iconHTML  

    This paper presents the development of a sweptvolume display system using three screens. Experimentally, 3D image is refreshed 900 times when the motor runs at the speed of 300 rpm. The image volume is 480 mm * 360 mm * 360 mm and the image resolution is 1024 * 768 * 750. In addition, we also developed a parallel moving swept-volume mechanical system based on structure of planetary gear to increase regularity of three-dimensional (3D) images, reduce the noise of mechanical rotation and remove visual dead zones on central axis at any viewing angle. Through the simulation and measurement of the screen deformation, the sampled light slice is corrected and a 3D image acquiring method based on virtual light slice is proposed. Demonstrated in the experiments, a prototype of this system is able to display 3D image with the brightness up to 70 lum, also generate almost 590 million voxels and well-distributed 3D images. The motor speed of parallel moving swept-volume system is 1/3 the speed of rotating swept-volume system. The prototype only produces noise levels of 60 dB. View full abstract»

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  • Comparisons of Viewing Zone Characteristics of Multiview and Integral Photography 3D Imaging Methods

    Page(s): 464 - 471
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1400 KB) |  | HTML iconHTML  

    Viewing zones of contact-type multiview (MV) three-dimensional (3D) imaging and Integral Photography (IP) are defined based on geometrical optics, and then the compositions of images projected to viewers' eyes at viewing regions of the viewing zones are analyzed. This analysis reveals that each image is composed of a pixel from each participating pixel cell to form the central and side viewing zones. In the regions between the viewing zones, one or two pixel cells do not contribute any pixel. However, when the total number of pixel cells in forming the viewing zones is large, one or two missing pixel cells may not deteriorate the image quality. In this sense, the side viewing zones are not working independently but they work together with the central viewing zone to build a bigger combined viewing zone. The analysis also reveals that the combined viewing zone of IP is not different from the viewing regions between viewing zone forming optics and the viewing zone cross section of the MV viewing zone, in its characteristics. View full abstract»

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  • Supervised Stereo Visual Acuity Tests Implemented on 3D TV Monitors

    Page(s): 472 - 478
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    In this paper we discuss under which conditions standard stereo visual acuity tests can be implemented on 3D TV monitors. In particular, we emphasize the role of environmental lighting conditions, on the measurement of the stereo visual acuity, when using conventional Stereoscopic 3D tests, such as Wirt stereotests. We investigate the impact of parameters such as luminance, backlight and contrast when these tests are implemented on 3D TV monitors. We demonstrate that some deviations are observed when modifying the room luminance and the type of displays used (e.g. plasma (PDP) or liquid crystal (LCD) displays). Our measurements carried out on an human sample are supervised by pupil size measurements, using an eyes-tracker, enabling a better interpretation of the results. Finally, we discuss the benefit of using Stereoscopic 3D tools to implement stereo visual acuity measurements. View full abstract»

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  • New Pixel Circuit Design Employing an Additional Pixel Line Insertion in AMOLED Displays Composed by Excimer Laser-Crystallized TFTs

    Page(s): 479 - 482
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (767 KB) |  | HTML iconHTML  

    Active matrix organic light-emitting diode (AMOLED) displays are fabricated from polycrystalline silicon, which is formed in the single and double (overlap) scanned area during the excimer laser annealing (ELA) process. A redundant pixel line (RPL) design is proposed to remove the overlapping mura and, as a result, a 5-in AMOLED display is successfully fabricated without any non-uniform line image on the overlapping scanned area. This result indicates that the fabrication of a large-sized AMOLED panel is possible using ELA crystallization through an RPL design. View full abstract»

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  • Occlusion Removal Using Depth Mapping in Three-Dimensional Integral Imaging

    Page(s): 483 - 490
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1255 KB) |  | HTML iconHTML  

    In this paper, we present an occlusion removal method to enhance reconstructed images of occluded three-dimensional (3D) objects based on pixel depth mapping technique in 3D multi-perspective imaging. Depth mapping is achieved by minimizing the statistical variance of projection image pixels of 3D object points on different perspective images. Then depth map and variance map are utilized to classify elemental image pixels into object or occlusion classes. Based on pixel classification results, a modified reconstruction algorithm is used to reconstruct the object without the effect of occlusion. In the proposed method, the occlusion is unknown and may be arbitrarily placed in front of the scene. Experimental results are presented to evaluate the effectiveness of the proposed method. View full abstract»

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  • [Blank page]

    Page(s): 491 - 492
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  • Special issue on Green Technology

    Page(s): 493
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  • Journal of Display Technology information for authors

    Page(s): C3
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  • [Blank page - back cover]

    Page(s): C4
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Aims & Scope

This publication covers the theory, design, fabrication, manufacturing and application of information displays and aspects of display technology.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Arokia Nathan
University of Cambridge
Cambridge, U.K.