@inproceedings{ebaf7ae5957d4a009ca9ac11fb9f42c4,
title = "Direct LED backlight for large area LCD TVs: Brightness analysis",
abstract = "A direct or bottom LED backlight is a key concept in large area LCD displays because it does not use a light guide, is flat, and is easy to assemble. In this paper, a method of luminance management for a bottom LED backlight is proposed and demonstrated. We analytically calculate both the power consumption and brightness uniformity in function of: screen brightness, screen size, backlight thickness, transmittance of the LCD panel, reflective cavity efficiency, gain and cone angle of enhancement films, LED array configuration, and the average luminous flux and radiation pattern of a single LED. Moreover, a 42-inch LCD television with this backlight design approach is made and demonstrated. The bottom backlight incorporates an array of RGGB 4-in-1 multi-chip LEDs within a highly reflective box behind a diffuser and a dual brightness enhancement film. We predict with an accuracy of 94% the brightness uniformity and with 96% the luminance level.",
keywords = "Backlight, LCD television, LEDs, Luminance",
author = "Sun, {Ching Cherng} and Ivan Moreno and Chung, {Shih Hsun} and Chien, {Wei Ting} and Hsieh, {Chih To} and Yang, {Tsung Hsun}",
year = "2007",
doi = "10.1117/12.735508",
language = "???core.languages.en_GB???",
isbn = "9780819468178",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Seventh International Conference on Solid State Lighting",
note = "7th International Conference on Solid State Lighting ; Conference date: 27-08-2007 Through 29-08-2007",
}