OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 17 — Aug. 13, 2012
  • pp: 19109–19118

Angularly positioned LED-based spatial-temporal color separation system

Chi-Hung Lee  »View Author Affiliations

Optics Express, Vol. 20, Issue 17, pp. 19109-19118 (2012)

View Full Text Article

Enhanced HTML    Acrobat PDF (1433 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



This study proposes a two-field driving scheme for field sequential color liquid crystal displays (LCDs) without color filters. The proposed scheme is based on angularly positioned color LEDs. In each field, the angular rays of two colors are collimated by a collimation lens, redirected by a light guide, and converged by a cylindrical-lens array to map into corresponding sub-pixel positions to efficiently display color images. The three main advantages of this approach are the elimination of dye color filters, high feasibility using conventional ultra-precision machining processes, and a larger color gamut.

© 2012 OSA

OCIS Codes
(120.2040) Instrumentation, measurement, and metrology : Displays
(230.3670) Optical devices : Light-emitting diodes
(080.4295) Geometric optics : Nonimaging optical systems

ToC Category:
Optical Devices

Original Manuscript: March 26, 2012
Revised Manuscript: May 30, 2012
Manuscript Accepted: July 2, 2012
Published: August 6, 2012

Chi-Hung Lee, "Angularly positioned LED-based spatial-temporal color separation system," Opt. Express 20, 19109-19118 (2012)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. T. V. Gunn and W. Haistead, “Diffractive color separation fabrication,” Proc. SPIE3363, 198–208 (1998). [CrossRef]
  2. H. Dammann, “Color separation gratings,” Appl. Opt.17(15), 2273–2279 (1978). [CrossRef] [PubMed]
  3. H.-H. Lin, C.-H. Lee, and M.-H. Lu, “Dye-less color filter fabricated by roll-to-roll imprinting for liquid crystal display applications,” Opt. Express17(15), 12397–12406 (2009). [CrossRef] [PubMed]
  4. R. Caputo, L. De Sio, M. J. J. Jak, E. J. Hornix, D. K. G. de Boer, and H. J. Cornelissen, “Short period holographic structures for backlight display applications,” Opt. Express15(17), 10540–10552 (2007). [CrossRef] [PubMed]
  5. C. Joubert, B. Loiseaux, A. Delboulbé, and J. P. Huignad, “Phase volume holographic optical components for high-brightness single-LCD projectors,” Appl. Opt.36(20), 4761–4771 (1997). [CrossRef] [PubMed]
  6. S. G. Kang, J-S. Lee, H-H. Hwang, and C-S. Cho, “A design optimization of the OCB-Mode for the application of field-sequential color microdisplays,” SID 01 Digest, 855−857 (2001).
  7. P.-C. Chen, H.-H. Lin, C.-H. Chen, C.-H. Lee, and M.-H. Lu, “Color separation system with angularly positioned light source module for pixelized backlighting,” Opt. Express18(2), 645–655 (2010). [CrossRef] [PubMed]
  8. R. L. D. Silverstein, “STColor: hybrid spatial-temporal color synthesis for enhanced display image quality,” SID 05 Digest, 1112–1115 (2005).
  9. M. J. J. Jak, G. J. Hekstra, J. J. L. Hoppenbrouwers, F. J. Vossen, N. Raman, and O. Belik, “Spectrum sequential liquid crystal display,” SID 05 Digest, 1120–1123 (2005).
  10. Y.-K. Cheng, Y.-P. Huang, Y.-R. Cheng, and H.-P. D. Shieh, “Two-field Scheme: spatiotemporal modulation for field sequential color LCDs,” J. Disp. Technol.5(10), 385–390 (2009). [CrossRef]
  11. ZEMAX, Radiant ZEMAX, Inc., http://www.radiantzemax.com/en/design/ .
  12. Advanced System Analysis Program, (ASAP TM), Breault Research Organization, Inc., http://www.breault.com/index.php .
  13. F. Yamada, S. Ono and Y. Taira, “Dual layered very thin flat surface micro prism array directly molded in an LCD cell,” Euro display 2002, 339–342 (2002).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited