Novel display mode using waveguide and LC based light shutter

Joon Young Yang, Jong Beom Lee, Jong Won Moon, Dong Ho Lee, Kyung Woon Lee, Chang Dong Kim, Yong Ki Hwang, In Jae Chung, Jung Ho Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution


New conceptual display structure is introduced by using TIR characteristics and BPLC as alight shutter. In our structure, non-polarized light source can be used as incident light due to the isotropic characteristics of BPLC unlike previously suggested waveguide display concept using nematic LC at '0' bias voltage. In addition, light leakage in the case of BPLC is smaller than that in the case of nematic LC. According to the wave mode, TM mode or TE mode, the critical angle is different from each other due to homeotropical characteristics of BPLC at bias voltage. Then, each critical angle is measured and optoelectronic characteristics of BPLC are estimated with increasing applied voltage. In addition, the intensity characteristics according to bias voltage across BPLC are studied with various waves. We confirm the nonpolarized light source can be automatically filtered, and directly used for waveguide display by BPLC. Consequently, BPLC can be nominated as a new light shutter in waveguide display structure using TIR mechanism.

Original languageEnglish
Title of host publicationAdvances in Display Technologies; and E-Papers and Flexible Displays
Publication statusPublished - 2011
EventAdvances in Display Technologies; and E-Papers and Flexible Displays - San Francisco, CA, United States
Duration: 2011 Jan 262011 Jan 27

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherAdvances in Display Technologies; and E-Papers and Flexible Displays
Country/TerritoryUnited States
CitySan Francisco, CA


  • Critical angle
  • Display
  • Liquid crystal
  • TIR (total internal reflectance)
  • Waveguide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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