Portal de Periódicos da CAPES

43.4: High Brightness Direct LED Backlight for LCD‐TV

2003; Wiley; Volume: 34; Issue: 1 Linguagem: Inglês

10.1889/1.1832516

2168-0159

Robert Scott West, Huub Konijn, Willem Sillevis‐Smitt, Simon Kuppens, Nicola Pfeffer, Yourii V. Martynov, Yagi Takaaki, Stefan Eberle, Gerard Harbers, Tien Wei Tan, Choon Earn Chan,

Advanced optical system design

Abstract A novel LED light source, “Luxeon Direct”, has been integrated into a highly efficient direct backlight. This concept incorporates one of the latest LEDs released by Lumileds™. This direct backlight approach integrates side emitting LEDs with a highly reflective cavity placed behind the LCD. Prior to this method it has been very difficult to use high power red, green and blue (RGB) LEDs in a direct backlight design due to the high color and brightness uniformity requirements. In this paper a method will be demonstrated that can achieve excellent backlight performance using an indirect illumination approach with high power LEDs.