By Topic

Display Technology, Journal of

Issue 5 • Date May 2010

Filter Results

Displaying Results 1 - 11 of 11
  • [Front cover]

    Page(s): C1
    Save to Project icon | Request Permissions | PDF file iconPDF (345 KB)  
    Freely Available from IEEE
  • Journal of Display Technology publication information

    Page(s): C2
    Save to Project icon | Request Permissions | PDF file iconPDF (35 KB)  
    Freely Available from IEEE
  • Table of contents

    Page(s): 161
    Save to Project icon | Request Permissions | PDF file iconPDF (36 KB)  
    Freely Available from IEEE
  • Sunlight Readable Fast-Response Transflective LCDs by Horizontal Electric Fields

    Page(s): 163 - 165
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (293 KB) |  | HTML iconHTML  

    Two single-cell-gap transflective display devices with vertically aligned positive dielectric anisotropy liquid crystal driven by horizontal electric fields are proposed. In these displays, patterned reflectors are located at transmittance-inefficient regions to serve as reflective mode. These displays exhibit fast response time, high transmittance, and wide view with optical compensation. Potential applications of these displays for sunlight readable mobile devices are emphasized. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dot Pattern Designing on Light Guide Plate of Backlight Module by the Method of Molecular Potential Energy

    Page(s): 166 - 169
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1184 KB) |  | HTML iconHTML  

    An approach for dot pattern designing on the light guide plate of backlight module is proposed in this paper. The proposed approach employs molecular potential energy model to generate random-dot patterns for light guide designed for backlight systems. The methods of developing dot patterns are various. We chose AutoCAD-VBA programme method for its visible interface. The algorithm can be divided into two steps: Firstly, an AutoCAD-VBA programme is compiled to generate random initial dot patterns, which contains 69 091 points. Secondly, a variable equilibrium distances system are found by the Mathematica software to fine tune distances among those points. At last, we have derived dot patterns which can satisfy the uniformity luminance requirement demanded by liquid-crystal displays, testing results show that the optical uniformity can reach 89.3%. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Large Gamut Backlight for an LCD With Four Primaries

    Page(s): 170 - 177
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (815 KB) |  | HTML iconHTML  

    A small backlight unit having four LEDs of different colors is designed and fabricated. Traditionally, the backlight units are lit by white cold cathode fluorescent lamps or by white LEDs. Our backlight unit utilizes four monochromatic LEDs. LEDs are located at corners of the light guide. Outcoupling is accomplished using large period blazed-gratings. The master plate for the light guide is fabricated by laser lithography. The final lightguide is UV-casted on a PMMA plate using an electroplated nickel tool. Proposed backlight unit enlarges significantly the gamut of LCD, if the color filters of the LCD panel have been chosen appropriately. The brightness uniformity and the white balance of the backlight are analyzed by a fiber spectrometer. The brightness uniformity of the backlight is good, over 85%. White balance of the backlight should be further improved. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Local Blinking HDR LCD Systems for Fast MPRT With High Brightness LCDs

    Page(s): 178 - 183
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (874 KB) |  | HTML iconHTML  

    A new impulse-type display named Local Blinking High Dynamic Range (HDR) LCD System was proposed, which utilized local dimming technology to achieve a local blinking effect that not only suppressed motion blur and reduce Moving Picture Response Time (MPRT) to 3.89 ms but also applied local image compensation to maintain image brightness and details without substituting high power light source. In addition, the intrinsic advantages, such as high dynamic range (high contrast ratio) and low power consumption were also achieved. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A New Compact Low-Power High-Speed Rail-to-Rail Class-B Buffer for LCD Applications

    Page(s): 184 - 190
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (970 KB) |  | HTML iconHTML  

    This paper addresses a very compact low-power class-B buffer amplifier topology for large-size liquid crystal display applications. The proposed buffer achieves high-speed driving performance, draws a small quiescent current during static operation and offers a rail-to-rail common-mode input range. The circuit provides enhanced slewing capabilities with a limited power consumption by exploiting two current comparators embodied in the input stage, which sense the input signal transients to turn on the output stage transistors. A rail-to-rail stacked mirror differential amplifier is used to amplify the input signal difference and supply the bias voltages for the output stage. Post-layout simulations show that the proposed buffer can drive a 1-nF column line load within 1.8-¿s settling time under a full voltage swing, while drawing only 3.5-¿A static current from a 3-V power supply. Monte Carlo results finally confirm an excellent degree of robustness of the proposed topology. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fast Voltage-Programmed Pixel Architecture for AMOLED Displays

    Page(s): 191 - 195
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (455 KB) |  | HTML iconHTML  

    We present a fast voltage programming scheme for active-matrix organic light-emitting diode (AMOLED) displays using amorphous silicon (a-Si) thin-film transistor (TFT) backplane technology. The proposed scheme uses on-pixel measurement of the threshold voltage (V th) of the drive TFT. In contrast to the conventional voltage driving, V th is not measured by discharging a capacitor through a diode-connected TFT. Thus, the accuracy-speed tradeoff does not limit the performance of the new driving scheme. A 4-TFT 2-capacitor pixel circuit is implemented based on the new driving scheme, and its performance is verified by circuit-level simulations using AIM-SPICE. Simulation results show that for a programming time of 33 ¿s , less than 2.5% change in the OLED current can be achieved for a 5-V shift in the threshold voltage of the drive TFT. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Special issue on IEEE International Conference on Consumer Electronics (ICCE 2011)

    Page(s): 196
    Save to Project icon | Request Permissions | PDF file iconPDF (173 KB)  
    Freely Available from IEEE
  • Journal of Display Technology information for authors

    Page(s): C3
    Save to Project icon | Request Permissions | PDF file iconPDF (31 KB)  
    Freely Available from IEEE

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.