Journal of Information Display

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

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)
  • Published : 2009.09.30
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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

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