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Display Technology, Journal of

Issue 4 • Date April 2012

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Displaying Results 1 - 19 of 19
  • [Front cover]

    Publication Year: 2012 , Page(s): C1
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  • Journal of Display Technology publication information

    Publication Year: 2012 , Page(s): C2
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  • Table of contents

    Publication Year: 2012 , Page(s): 181
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  • Blank page

    Publication Year: 2012 , Page(s): 182
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  • Sunlight Readable Transmissive LCDs

    Publication Year: 2012 , Page(s): 183 - 185
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (480 KB) |  | HTML iconHTML  

    We propose a novel sunlight readable transmissive LCD embedded with a transflective film. Such a transflective film has high transmission to the backlight and high reflection to the ambient light. This new display is particularly suitable for outdoor applications under strong ambient light condition. View full abstract»

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  • Visibility of Color Breakup Phenomena in Displays Based on Narrowband Spectral Sources

    Publication Year: 2012 , Page(s): 186 - 193
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1340 KB) |  | HTML iconHTML  

    The hypothesis that artefacts related to chromatic aberration from eyeglasses may be more objectionable in laser projectors compared to conventional digital projectors was investigated. Untrained observers viewed movie clips in a theater and made image quality ratings. The same four clips were presented on both a standard Xenon display and a prototype laser projector in separate blocks. There was no evidence that observers noticed color break-up artefacts using either mode of presentation. View full abstract»

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  • Perceptual Effects of Laser-Based HUDs

    Publication Year: 2012 , Page(s): 194 - 197
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (801 KB) |  | HTML iconHTML  

    This paper compares the readability and color performance of LED- and laser-based head-up displays (HUDs) for various ambient light conditions. Using formal color models with reference to automotive standards, it is shown that HUDs employing laser sources exhibit superior performance in terms of readability and chromaticity compared to TFT-LCD systems based on white or RGB LEDs. View full abstract»

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  • Bit Slice Addressing of Fast Switching Bi-Stable Displays and Multi-Bit Slice Addressing of Active Matrix Liquid Crystal Displays

    Publication Year: 2012 , Page(s): 198 - 203
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (806 KB) |  | HTML iconHTML  

    Bit slice addressing (BSA) is useful to display grayscales in fast switchable bi-stable displays and active matrix liquid crystal displays (AMLCD). The display is used as a dynamic mask and intensity of light source that illuminates the display is controlled to be proportional to the bit-weight of the bit that was used to refresh the display. A viewing angle characteristic that is independent of grayscales, color purity of images, reduction of motion blur, wide voltage margin to switch the state of pixels, option to reduce power consumption of backlight and low hardware complexity of data drivers are some of the advantages of BSA. Multi-BSA is also proposed to drive the state-of-the-art active-matrix LCDs. View full abstract»

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  • Flat-Panel Compatible Photovoltaic Energy Harvesting System

    Publication Year: 2012 , Page(s): 204 - 211
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (872 KB) |  | HTML iconHTML  

    In this work, an amorphous silicon (a-Si:H) thin-film transistor (TFT) circuit designed for charging of intermediary energy storage devices using photovoltaic (PV) solar cell arrays is demonstrated and analyzed. The proposed circuit combines the functionality of a linear DC-DC voltage regulator and a maximum power point tracking unit (MPPT). The circuit reduces the dependence of the charging voltage on light intensity and offers relatively stable operation when electrically stressed. The effects of light intensity and the PV array size on the system and circuit efficiencies as well as on PV utilization are investigated. A peak system efficiency of 18% is demonstrated. Although this is significantly lower than state-of-the-art switch mode DC-DC voltage regulator and MPPTs, the combined use of thin-film technology and low fabrication temperatures (below 150 °C) allow its integration within a wide range of mobile devices, making it an attractive solution for energy harvesting systems. View full abstract»

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  • Improved Nonlocal Means Based on Pre-Classification and Invariant Block Matching

    Publication Year: 2012 , Page(s): 212 - 218
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3271 KB) |  | HTML iconHTML  

    One of the most popular image denoising methods based on self-similarity is called nonlocal means (NLM). Though it can achieve remarkable performance, this method has a few shortcomings, e.g., the computationally expensive calculation of the similarity measure, and the lack of reliable candidates for some nonrepetitive patches. In this paper, we propose to improve NLM by integrating Gaussian blur, clustering, and rotationally invariant block matching (RIBM) into the NLM framework. Experimental results show that the proposed technique can perform denoising better than the original NLM both quantitatively and visually, especially when the noise level is high. View full abstract»

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  • The Compact Systems Design Based on DMD and the Straight Line 2-Channel LED for a Mobile Embedded Pico Projector

    Publication Year: 2012 , Page(s): 219 - 224
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (834 KB) |  | HTML iconHTML  

    We have successfully designed the most compact mobile embedded pico projector system, with an optical module size of up to 2.1 cc (20.6 × 16.4 × 6.2 mm), compared with the liquid crystal on silicon (LCoS) based projector system, which has an engine size of <;10 cc. The most compact pico projector system, with a reduction in size of about 25%, can be obtained. It consists of a projected optical system based on field lens type with 0.2 nHD (640 × 360) digital micromirror device (DMD) panel and an illumination part of the 2 channel type with 2 in1 LED source. It can be obtained the available display image size about 5-60 inches with uniformity over 70%, brightness 8 1m at LED power consumption 1 W and contrast ratio 1700:1 in the dark room. View full abstract»

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  • Holographic Capture and Display Systems in Circular Configurations

    Publication Year: 2012 , Page(s): 225 - 232
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (873 KB) |  | HTML iconHTML  

    This paper presents a novel method of multi-spatial light modulator (SLM) holographic image display that enables wide angle reconstruction of images of real world objects. The image data are delivered by means of digital holography. The capture and display systems are arranged in a circular configuration. In order to support the proper information flow between the multi-sensor capture and multi-SLM display systems we perform analysis using the Wigner distribution function. We also consider a mismatch of the capture and display configurations as well as the visual perception of the displayed image. Experimental results based on the reconstruction of real world scenes are presented that demonstrate the validity of the theoretical solutions. A single camera is used to record the digital holograms, where the object is rotated between captures, and these holograms are then displayed on a circular configuration of SLMs. The results show the limitation of multi-SLM holographic displays in terms of visual perception. These problems arise from the limited angular distribution of the SLMs on a display circle and the presence of gaps between the SLMs. View full abstract»

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  • Worldwide Uniformity of Color Reproduction in Handheld Video-Game Consoles and Applications

    Publication Year: 2012 , Page(s): 233 - 240
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (797 KB) |  | HTML iconHTML  

    Portable video-game consoles are comparable in color reproduction to other digital chromatic stimuli generators such as personal computers equipped with CRT or TFT screens but with the advantage of having a defined hardware. Such is the case with the Nintendo DSi for which the user can only adjust the luminance on a five-level scale by software. If these devices were also shown to present similar color rendering values around the world, they would be a potentially truly useful tool for distributing color vision deficiency detection tests using this medium as physical support. The present study examines the variability of the color rendering of these devices purchased in different parts of the world. View full abstract»

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  • Special issue on the 8th International Thin Film Transistor Conference (ITC 2012)

    Publication Year: 2012 , Page(s): 241 - 242
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  • Special Issue: IEEE/OSA Journal of Display Technology on Solid State Lighting

    Publication Year: 2012 , Page(s): 243
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  • Special issue on nanoplasmonics

    Publication Year: 2012 , Page(s): 244
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  • Numerical Simulation of Optoelectronic Devices

    Publication Year: 2012 , Page(s): 245
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  • Journal of Display Technology information for authors

    Publication Year: 2012 , Page(s): C3
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  • Blank page

    Publication Year: 2012 , 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.