Title:
BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/212070
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a thin backlight unit with good thinness and luminance uniformity, and a liquid crystal display device that uses this backlight unit. The present invention solves this problem by having a reflection element, a luminance uniformizing element, and a light source that is positioned between the reflection element and the luminance uniformizing element, wherein the luminance uniformizing element includes at least a Bragg reflection layer and reflects a portion of light emitted by the light source, the reflectance changes within a reflection surface, and the change in reflectance within the reflection surface is in accordance with the position of the light source.
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Inventors:
YONEMOTO TAKASHI (JP)
ICHIHARA NOBUHIKO (JP)
ICHIHARA NOBUHIKO (JP)
Application Number:
PCT/JP2018/018160
Publication Date:
November 22, 2018
Filing Date:
May 10, 2018
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
F21S2/00; F21V7/28; G02B5/00; G02B5/08; G02B5/20; G02B5/30; G02F1/13357; F21Y115/10
Domestic Patent References:
| WO2016186158A1 | 2016-11-24 |
Foreign References:
| JP2011215548A | 2011-10-27 | |||
| JP2007200885A | 2007-08-09 | |||
| JP2003240963A | 2003-08-27 | |||
| JP2012064476A | 2012-03-29 |
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
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