A Direct-View Backlight With UV Excited Trichromatic Phosphor Conversion Film

Author

Huang, Hsin-Tao ; Tsai, Chuang-Chuang ; Huang, Yi-Pai

Author_Institution

Dept. of Photonics, Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

6

Issue

4

fYear

2010

fDate

4/1/2010 12:00:00 AM

Firstpage

128

Lastpage

134

Abstract

This work presents a novel ultraviolet (UV) excited flat lighting (UFL) system consisting of remote phosphor converter (RPC) for liquid-crystal display (LCD) backlight applications. A trichromatic RPC is excited using 254 nm UV lamps to achieve a slim, high color saturation and high luminance backlight. Experimental results indicate that the module thickness reduces to 14.5 mm, along with a high color saturation (92% of the NTSC standard) as well as a high luminance (573 cd/m² ) when applied to large sized display (42-inch). Additionally, the proposed UFL backlight configuration has already been certified by a lifetime test to ensure the feasibility of proposed system in mass production.

Keywords

brightness; liquid crystal displays; optical films; phosphorescence; ultraviolet radiation effects; UFL backlight configuration; UV excited trichromatic phosphor conversion film; UV lamps; color saturation; direct-view backlight; liquid-crystal display backlight; luminance backlight; remote phosphor converter; trichromatic RPC; ultraviolet excited flat lighting system; Commercialization; Indium tin oxide; Lifetime estimation; Light sources; Liquid crystal displays; Mass production; Optical arrays; Packaging; Phosphors; Photonics; Color deviation; FWHM; NTSC; UV excited flat lighting (UFL); color saturation; lamp mura; remote phosphor converter (RPC); slim backlight; ultraviolet (UV) excited;

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2009.2037834

Filename

5431082