English
 
  Home > Publication  

Category International Journal
Paper Title Generation of intensity-tunable structural color from helical photonic crystals for full color reflective-type display
Journal name Optics Express
Author Se-Um Kim, Sin-Hyung Lee, In-Ho Lee, Bo-Yeon Lee, Jun-Hee Na, Sin-Doo Lee
SCI Y Vol 26
page 13561 Year/date 2018/05/09
Abstract A new concept of intensity-tunable structural coloration is proposed on the basis of a helical photonic crystal (HPC). The HPCs are constructed from a mixture of chiral reactive mesogens by spin-coating, followed by the photo-polymerization. A liquid crystal (LC) layer, being homogeneously aligned, is prepared on the HPCs to serve as a tunable waveplate. The electrical modulation of the phase retardation through the LC layer directly leads to the intensity-tunable Bragg reflection from the HPCs upon the incidence of the polarized light. The bandwidths of the structural colors are found to be well preserved regardless of the applied voltage. A prototype of a full color reflective-type display, incorporated with three primary color units, is demonstrated. Our concept of decoupling two mutually independent functions, the intensity modulation by the tunable waveplate and the color reflection by the HPCs provides a simple and powerful way of producing a full color reflective-type display which possesses high color purity, high optical efficiency, the cycling durability, and the design flexibility.
PDF
 

 
서울대학교
(151-744)서울특별시 관악구 관악로 599 서울대학교 공과대학 전기공학부 #420-032 분자집적물리 및 소자연구실
Tel : 02-880-9558 Fax : 02-874-9769
Copyright ⓒ 2004 MIPD. All rights Reserved.Admin