Title:
BACKLIGHT, AND LCD DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/051745
Kind Code:
A1
Abstract:
[Problem] To provide: a backlight unit which can be made flat, and which can output white light with a good hue; and a liquid crystal display device equipped with the backlight unit. [Solution] The backlight of the present invention is equipped with: a sheet-form wavelength conversion member (16) comprising a planar light-emitting section (10) that emits blue light (LB) as excitation light, and a wavelength conversion layer (15) onto which blue light (LB) is incident, which emits light on the longer wavelength side than blue light, and through which part of the blue light passes; a retroreflective member group (20); and a reflective plate (18), wherein the reflectance R as defined by the formula below for blue light in the retroreflective member group (20) exceeds 70%. R=∫∫ ∫∫ Ir(θe,φe,θr,φr)/Ie（θe,φe）×cosθe dθe dφe dθr dφr
Inventors:
YONEMOTO TAKASHI (JP)
SEKIGUCHI MEGUMI (JP)
KAMO MAKOTO (JP)
YASUDA KOTARO (JP)
SEKIGUCHI MEGUMI (JP)
KAMO MAKOTO (JP)
YASUDA KOTARO (JP)
Application Number:
PCT/JP2015/004876
Publication Date:
April 07, 2016
Filing Date:
September 25, 2015
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
F21S2/00; F21V7/00; F21V7/22; F21V9/16; G02B5/12; G02F1/13357; F21Y115/10
Foreign References:
| JP2013544018A | 2013-12-09 |
Attorney, Agent or Firm:
YANAGIDA, Masashi et al. (JP)
Seiji Yanagida (JP)
Seiji Yanagida (JP)
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