TITLE

Ultrahigh contrast light valve driven by electrocapillarity of liquid gallium

AUTHOR(S)
Tsai, Jeff T. H.; Chih-Ming Ho; Fu-Cheng Wang; Chi-Te Liang
PUB. DATE
December 2009
SOURCE
Applied Physics Letters;12/21/2009, Vol. 95 Issue 25, p251110
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This letter describes an ultrahigh contrast valve driven by the electrocapillarity of liquid gallium. We demonstrate that a micrometer-sized gallium droplet can be used to fabricate a prototype backlight transmissive pixel cell by transforming the droplet into a flat thin film. This light valve exhibits significantly high backlight utility (96%), an exceptional contrast ratio (106:1), and fast response time (0.49 ms). The high contrast ratio originated from the exceptional reflectivity of gallium, which can block backlight to prevent any transmission in the off state of our device. Without using any polarizer, the backlight utility can be improved dramatically compared to a conventional liquid crystal display. The backlight utility and switching time obtained from this prototype light valve is higher than that of commercial liquid crystal displays. This concept is also applicable to a wide variety of electro-optical devices.
ACCESSION #
47132842

 

Related Articles

  • Automatic defect inspection for LCDs using singular value decomposition. Lu, Chi-Jie; Tsai, Du-Ming // International Journal of Advanced Manufacturing Technology;Jan2005, Vol. 25 Issue 1/2, p53 

    Thin film transistor liquid crystal displays (TFT-LCDs) have become increasingly popular and dominant as display devices. Surface defects on TFT panels not only cause visual failure, but result in electrical failure and loss of LCD operational functionally. In this paper, we propose a global...

  • Four-domain twisted nematic liquid crystal display fabricated by reverse rubbed polyimide process. Chen, J.; Bos, P. J.; Johnson, D. L.; Bryant, D. R.; Li, J.; Jamal, S. H.; Kelly, J. R. // Journal of Applied Physics;8/15/1996, Vol. 80 Issue 4, p1985 

    Presents a study that discussed the realization of a four-domain twisted nematic (TN) display by a reverse rubbing technique that should be suitable for mass production in the display industry. Background on single-domain TN cells and the limitations of TN liquid crystal displays; Analysis of...

  • LCD Backlights, Light Sources For Microdisplays Drive Market Growth For Solid-State Lighting. Allen, Kimberly // Electronic Design;4/27/2006, Vol. 54 Issue 9, p25 

    The article reports that liquid crystal display backlights and light sources for microdisplays are fueling market growth for solid state and emergent lighting technologies for backlights and projection sources. Solid state technologies save on power and cost, enhance displays, and diminish the...

  • Extending battery life in portable communication devices.  // Design Engineering;Jul99, p47 

    Describes a .5 millimeter two-diode backlighting system for illuminated liquid crystal display (LCD) systems. Structure of conventional backlighters; Battery drain; Details of how the system was developed; Testing of initial concepts.

  • TFT-LCD manufacturing. Annis, Cahrles // Solid State Technology;Mar2007, Vol. 50 Issue 3, p44 

    The article discusses the holistic strategy employed by panel manufacturers to reduce the exposure cost of lithography in liquid crystal display (LCD) industry in the U.S. Since LCD exposure and lithography processes require higher costs, panel suppliers are expected to increase the adoption of...

  • Approximation of electro-optical characteristics of ChLC at transitions from the homeotropic texture. Rybalochka, A.; Chumachkova, M.; Sorokin, V. // Semiconductor Physics, Quantum Electronics & Optoelectronics;2003, Vol. 6 Issue 3, p411 

    In this paper a method for an approximation of electro-optical characteristics of a cholesteric liquid crystal (ChLC) that describe behavior of a cholesteric material at transitions from the field induced homeotropic texture to the stable planar and focal conic textures have been proposed. To...

  • In Search of a Consistent Gray. SAUER, JEFF // Sound & Video Contractor;Dec2008, Vol. 26 Issue 12, p18 

    The article discusses color temperature and how the display maintains it across a range of grayscales. The introduction of light emitting diode (LED)-backlit liquid crystal display (LCD) panels was driven by the desire of companies to create a pure white. LEDs can be calibrated to achieve the...

  • Electro-optics of polymer-stabilized blue phase liquid crystal displays. Zhibing Ge; Gauza, Sebastian; Meizi Jiao; Haiqing Xianyu; Wu, Shin-Tson // Applied Physics Letters;3/9/2009, Vol. 94 Issue 10, pN.PAG 

    Electro-optics of polymer-stabilized blue phase liquid crystal displays (BP LCDs) is analyzed and validated experimentally. A numerical model for characterizing and optimizing the electro-optical and display properties of BP LCDs in in-plane switching and fringe field switching cells is...

  • Tunable terahertz fishnet metamaterial. Chang, Cheng-Ling; Wang, Wei-Chih; Lin, Hong-Ren; Ju Hsieh, Feng; Pun, Yue-Bun; Chan, Chi-Hou // Applied Physics Letters;4/15/2013, Vol. 102 Issue 15, p151903 

    This paper describes and demonstrates a terahertz (THz) frequency tunable fishnet metamaterial (TFMM) using an electrically controlled polymer dispersed liquid crystal (PDLC) matrix. In contrast to other PDLC-based devices, the TFMM employs a novel method for encapsulating PDLC using a thin (1.5...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics