Directionality Control of Light-emitting Devices through Sub-micron Dielectric Structures
Yoshikuni Hirano, Katsu Tanaka, Yasushi Motoyama, Nobuo Saito, Hiroshi Kikuchi, Naoki Shimidzu
2014
Abstract
We have been investigating directional light control methods of light-emitting diodes (LEDs). We propose a method that makes it possible to control a principal axis in field intensity through fine-structures on the LEDs. We also describe the concept of this method and essential points for obtaining a sharply defined principal axis. The effectiveness of the method was verified through differences in angular distributions by using the finite-different time-domain method.
References
- Krames, M. R., Shchekin, O. B. Mueller-Mach, R., Mueller, G. O., Zhou, L., Harbers, G., and Craford, M., G., 2007, “Status and Futre of High-Power LightEmitting Diodes for Solild-State Lighting”, IEEE Journal of Display Technology, 3 (2), 160 - 175. doi:10.1109/JDT.2007.895339.
- McKendy, J. J. D., Massoubre, D., Zhang, S., Rae, B. R., Gree, R. P., Gu, E., Henderson, R. K., Kelly, A. E., and Dawson, M. D., 2012, “Visible-Light Communications Using a CMOS-Controlled MicroLight-Emitting-Diode Array”, IEEE Journal of Lightwave Technology, 30 (1), 61 - 67. doi:10.1109/JLT.2011.2175090.
- Sony Corp., 2012, Sony Develops Next-generation Display, “Crystal LED Display”, Ideal for High Picture Quality on Large screens. Full HD 55-inch Prototype model Exhibited At 2012 International CES, News releases of Jan. 10, 2012, Retrieved from: http://www.sony.net/SonyInfo/News/Press/201201/12- 005E/
- Fournier, F., Rolland, J., 2008, “Design Methodology for High Brightness Projectors”, IEEE Journal of Display Technology, 4 (1), 86 - 91. doi:10.1109/JDT.2007.907110.
- Tu, S. -H., Pan, J. -W., Wang, C. -M., Lee, Y. -C., and Chang, J. -Y., 2009, “New Collection Systems for Multi LED Light Engines”, Optical Review, 16 (3), 318 - 322.
- McGroddy, K., David, A., Matioli, E., Iza, M., Nakamura, S., DenBaars, S., Speck, J., S., Weisbuch, C., and Hu, E., L., 2008, "Directional emission control and increased light extraction in GaN photonic crystal light emitting diodes", Appl. Phys. Lett., 93 (10), 103502. Doi:10.1063/1.2978068.
- Lai, C. -F., 2012, Emission aperture size limited the guided mode extraction characteristics of GaN-based ultrathin-film photonic crystal micro-light-emitting diodes, Appl. Phys. Lett., 101, 023109. doi: 10.1063/1.4734509.
- Son, J. -Y., Javidi, B., Yano, S., and Choi, K. -H., 2010, “Recent Developments in 3-D Imaging Technologies”, IEEE Journal of Display Technology, 6 (10), 394 - 403. doi:10.1109/JDT.2010.2045636.
- Fattal, D., Pheng, Z., Tran, T., Vo, S., Fiorentino, M., Brug, J., Beausoleil, R. G., 2013, A multi-directional backlight for a wide-angle, glasses-free threedimentional display, Nature, 495, 348-351. Doi:10.1038/nature11972.
- Handbook of Optics, 3rd edition, Vol. 4. McGraw-Hill 2009. Retrieved July 30, 2013, from http://refractiveindex.info
Paper Citation
in Harvard Style
Hirano Y., Tanaka K., Motoyama Y., Saito N., Kikuchi H. and Shimidzu N. (2014). Directionality Control of Light-emitting Devices through Sub-micron Dielectric Structures . In Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS, ISBN 978-989-758-008-6, pages 163-169. DOI: 10.5220/0004698701630169
in Bibtex Style
@conference{photoptics14,
author={Yoshikuni Hirano and Katsu Tanaka and Yasushi Motoyama and Nobuo Saito and Hiroshi Kikuchi and Naoki Shimidzu},
title={Directionality Control of Light-emitting Devices through Sub-micron Dielectric Structures},
booktitle={Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,},
year={2014},
pages={163-169},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004698701630169},
isbn={978-989-758-008-6},
}
in EndNote Style
TY - CONF
JO - Proceedings of 2nd International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,
TI - Directionality Control of Light-emitting Devices through Sub-micron Dielectric Structures
SN - 978-989-758-008-6
AU - Hirano Y.
AU - Tanaka K.
AU - Motoyama Y.
AU - Saito N.
AU - Kikuchi H.
AU - Shimidzu N.
PY - 2014
SP - 163
EP - 169
DO - 10.5220/0004698701630169