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Patent Searching and Data


Title:
DIFFUSION MEMBER, PLANAR LIGHT SOURCE DEVICE, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/201164
Kind Code:
A1
Abstract:
A planar light source device (20) has a light-diffusing section (50) and a light-reflecting section (70) in the stated order. The light-diffusing section (50) has a light-transmitting property and a light-diffusing property. The reflectance of light of a specific wavelength entering at an incidence angle of 0° is 80% or higher in the light-reflecting section (70). The reflectance of at least a portion of the light of the specific wavelength entering at an incidence angle with an absolute value of greater than 45° is less than 50% in the light-reflecting section (70).

Inventors:
NISHIKAWA MARII (JP)
OYAGI YASUYUKI (JP)
TANIGUCHI YUKIO (JP)
GOTO MASAHIRO (JP)
Application Number:
PCT/JP2021/014012
Publication Date:
October 07, 2021
Filing Date:
March 31, 2021
Export Citation:
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Assignee:
DAINIPPON PRINTING CO LTD (JP)
International Classes:
G02B5/02; B32B3/30; B32B7/023; B32B27/18; F21S2/00; F21V3/00; F21V5/00; F21V5/02; F21V5/04; F21V7/28; F21V9/14; F21V9/20; G02B3/00; G02F1/13357; F21Y105/16; F21Y113/13; F21Y115/10
Attorney, Agent or Firm:
NAKAMURA Yukitaka et al. (JP)
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