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57.2: Optical Design of Phosphor Sheet Structure in LED Backlight System
Author(s) -
Ito Yasushi,
Tsukahara Tsubasa,
Masuda Shozo,
Yoshida Tetsuyuki,
Nada Naoji,
Igarashi Takahiro,
Kusunoki Tsuneo,
Ohsako Junichi
Publication year - 2008
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3069810
Subject(s) - backlight , phosphor , chromaticity , materials science , optics , layer (electronics) , optoelectronics , diffusion , composite material , physics , liquid crystal display , thermodynamics
A novel LED backlight unit with a phosphor sheet is proposed. The basic structure of the phosphor sheet consists of a phosphor layer with a diffusion layer on either side of the phosphor layer. The diffusion layers can reduce the chromaticity shift due to the viewing angle and incident angle of blue light.