Binary liquid crystal alignments based on photoalignment in azo dye-doped liquid crystals and their application

Fuh, Andy Ying-Guey; Ju-Chin Chen; San-Yi Huang; Ko-Ting Cheng
February 2010
Applied Physics Letters;2/1/2010, Vol. 96 Issue 5, p051103
Academic Journal
This work demonstrates the feasibility of binary liquid crystal (LC) alignments, in which two forms of LC alignment are in a single pixel or a specific area using a surface-treated alignment layer and a photoalignment film of the adsorption of azo dyes onto the polymer surface in azo dye-doped liquid crystals. Binary LC alignments that involve two of common LC alignments, which are homogeneous, homeotropic, hybrid, and twisted nematic alignments, are initially demonstrated. Then, a binary LC alignment that comprises hybrid and homeotropic alignments is adopted to fabricate a viewing-angle-dependent liquid crystal display, which displays two images by changing viewing angles.


Related Articles

  • 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...

  • Single-substrate cholesteric liquid crystal displays by colloidal self-assembly. Chari, Krishnan; Rankin, Charles M.; Johnson, David M.; Blanton, Thomas N.; Capurso, Robert G. // Applied Physics Letters;1/23/2006, Vol. 88 Issue 4, p043502 

    We report a single-substrate method for fabrication of reflective and bistable cholesteric liquid crystal displays on flexible substrates based on self-assembly of uniform droplets of liquid crystal in a polymer matrix to create a close-packed monolayer. The displays may be made on a large scale...

  • 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.

  • 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...

  • Direct confirmation of biaxiality in a bent-core mesogen through the measurement of electro-optic characteristics. Lee, Gak Seok; Cho, Jin Seok; Kim, Jae Chang; Yoon, Tae-Hoon; Shin, Sung Tae // Journal of Applied Physics;May2009, Vol. 105 Issue 9, p094509 

    We propose a method to confirm the biaxial phase in thermotropic nematic liquid crystals from measurement of the electro-optic characteristics. The electro-optic transmittance curve shows monotonic decrease to zero in the uniaxial phase but the curve shows a U-shaped behavior (or a monotonic...

  • Liquid crystals: Smoothing out the wrinkles. Kaler, Eric W. // Nature Materials;Jan2005, Vol. 4 Issue 1, p11 

    Focuses on the study conducted by Jun Yamamoto and Hajime Tanaka about lyotropic liquid crystals. Difference of lyotropic liquid crystals to the thermotropic liquid crystals found in a conventional LCD display; Characteristics of the crystal; Implication of crystal's potential use in photonics.

  • 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...


Read the Article


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

Try another library?
Sign out of this library

Other Topics