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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 17 — Aug. 15, 2011
  • pp: 16022–16031

Highly efficient full-color display based on blue LED backlight and electrochromic light-valve coupled with front-emitting phosphors

Jeong Rok Oh, Hoo Keun Park, Ji Hye Oh, Taejoon Kouh, and Young Rag Do  »View Author Affiliations


Optics Express, Vol. 19, Issue 17, pp. 16022-16031 (2011)
http://dx.doi.org/10.1364/OE.19.016022


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Abstract

We report a novel full-color display based on the generation of full-color by blue light approach, so called color-by-blue display. This newly proposed color-by-blue light-valve display combines a blue backlight excitation source, a blue light-valve shutter, and front-emitting phosphor pixels. Careful evaluation shows that the detailed display characteristics as well as excellent cycling durability under a low operation voltage of 3 V easily satisfy the requirements for the current display application. Also, we would like to emphasize that the proposed method shows a conversion efficiency of 20%, surpassing the value (≈5%) seen in the typical liquid crystal displays. Although the switching response reported here is slower than in a commercial display module due to the solution-phase electrochromic nature of the shutter used, a response time close to that of a liquid crystal display is highly feasible, as we suggest.

© 2011 OSA

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.0230) Optical devices : Optical devices
(230.1480) Optical devices : Bragg reflectors
(230.3670) Optical devices : Light-emitting diodes

ToC Category:
Optical Devices

History
Original Manuscript: June 3, 2011
Revised Manuscript: July 25, 2011
Manuscript Accepted: July 25, 2011
Published: August 5, 2011

Citation
Jeong Rok Oh, Hoo Keun Park, Ji Hye Oh, Taejoon Kouh, and Young Rag Do, "Highly efficient full-color display based on blue LED backlight and electrochromic light-valve coupled with front-emitting phosphors," Opt. Express 19, 16022-16031 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-17-16022


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