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Journal of Display Technology

Journal of Display Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 9, Iss. 7 — Jul. 1, 2013
  • pp: 561–564

Roll-to-Roll Process-Based Sub-Wavelength Grating for a Color-Separation Backlight

Chun-Wei Liu, Chi-Hung Lee, Chia-Jen Ting, Tsung-Hsin Lin, and Shih-Chieh Lin

Journal of Display Technology, Vol. 9, Issue 7, pp. 561-564 (2013)


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Abstract

For this study, we designed a color-separation backlight to avoid the use of absorptive color filters in a conventional backlight. The module consists of sub-wavelength grating on a light-bar (SWG-LB) and a cylindrical lens array on a V-grooved light guide to display R/B/G images more efficiently. We designed the light bar to be a hexagon type in which partial total internal reflection (TIR) area is uniformly spaced between each SWG. The measurements showed that uniformity from the light bar and NTSC are 92.8% and 99%, respectively. The optical components including the sub-wavelength grating and the cylindrical lens array were mass produced, and the diamond turning was produced using a roll-to-roll process.

© 2013 IEEE

Citation
Chun-Wei Liu, Chi-Hung Lee, Chia-Jen Ting, Tsung-Hsin Lin, and Shih-Chieh Lin, "Roll-to-Roll Process-Based Sub-Wavelength Grating for a Color-Separation Backlight," J. Display Technol. 9, 561-564 (2013)
http://www.opticsinfobase.org/jdt/abstract.cfm?URI=jdt-9-7-561

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