Browse > Article

Fabrication of a Large LCD Backlight Unit with Red, Green, and Blue LED Lamps  

Kim, Hee-Tae (Backlight Technology, LCD Division, Samsung Electronics Co., Ltd.)
Noh, Seung-Jeong (Department of Applied Physics, Dankook University)
Choi, Yong-Seok (Department Of Electronics, Sunmoon University)
Yu, Soon-Jae (Department Of Electronics, Sunmoon University)
Publication Information
Journal of Information Display / v.10, no.3, 2009 , pp. 97-100 More about this Journal
Abstract
A backlight unit for a 42-inch LCD TV was manufactured with red, green, and blue LED lamps. The luminous and light extraction efficiencies of the LED lamps were increased by improving their light reflection structures and thermal properties. The blue, green, and red LED lamps showed different luminous efficiencies as a function of the input current. Compared to the conventional red LED lamp, however, the developed red LED lamp showed very high luminous efficiency in a low drive current. Taking these luminous efficiencies into account, the fabricated backlight unit showed high energy efficiency, low power consumption, and a wide color gamut.
Keywords
Light-emitting diode; red; green; and blue LED lamps; luminous efficiency; LCD backlight unit;
Citations & Related Records
연도 인용수 순위
  • Reference
1 K. Tadatomo, H. Okagawa, T. Jyoichi, M. Kato, M. Harada, and T. Taguchi, Mitsubishi Cable Industries Review, 99, 35 (2002)
2 C.G. Ji, 'Illumination Engineering' Munundang, 20 (1975)
3 S. J. Yu, to be submitted
4 S.J. Yu, Do-Hyung Kim, Yong-Seok Choi, and Heetae Kim, Journal of Information Display, 10, 49 (2009)   DOI
5 S. Chhajed, Y. Xi, Y. -Li, Th. Gessmann, and E. F. Schubert, J. of Appl. Phys. 97, 054506 (2005)   DOI   ScienceOn
6 E. Fred. Schubert, 'Light Emitting Diodes' (Light Emitting Diodes 2nd Edition, 2003)
7 W. A. Thornton, J. of the Optical. Soc. Of America, 61, 1155 (1971)   DOI
8 Display Devices Summer, No.47, 15 (2007)
9 N. Yamada, Oyo Butsuri, 68, 139 (1999)
10 S. Nakamura, M. Senoh, N. Iwasa, and S. Nagahama, Jpn. J. of Appl. Phys. 34, L794 (1995)
11 Y. Narukawa, J. Narita, T. Sakamoto, and K. Deguchi, Jpn. J. Appl. Phys. 45, L1084 (2006)   DOI
12 D.W. Kim, S.J. Yu, J.O. Seo, H.T. Kim, and J.W. Seo, J. of the Kor. Acad.-Indus. Soc., 10, 1514 (2009)   DOI