Title:
PLANAR LIGHT SOURCE DEVICE AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/201378
Kind Code:
A1
Abstract:
A planar light source device (30) and a display device (100) provided with the planar light source device (30) are each provided with: a plurality of light guide plates (33) that are disposed corresponding to divided light-emission regions and that each emit, from the upper surface, light having entered from a lateral surface; a plurality of light sources (32) that can be driven independently of each other; and a partition wall (34) that surrounds each of the plurality of light guide plates (33) so as to include one light guide plate (33) and one light source (32). With this configuration, light emitted, from the lateral surface or an emission surface (332) of any one of the light guide plates (33), in a direction of another adjacent one of the divided light-emission regions is shielded by the partition wall (34). Therefore, it is possible to suppress light leakage from each of the divided light-emission regions to a corresponding one of the other adjacent divided light-emission regions.
Inventors:
SOYAMA SHUNSUKE (JP)
NIIKURA EIJI (JP)
SAKAI MITSURU (JP)
ARAKI MIKIO (JP)
NIIKURA EIJI (JP)
SAKAI MITSURU (JP)
ARAKI MIKIO (JP)
Application Number:
PCT/JP2021/012340
Publication Date:
September 29, 2022
Filing Date:
March 24, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F21S2/00
Domestic Patent References:
| WO2017002307A1 | 2017-01-05 | |||
| WO2009110145A1 | 2009-09-11 |
Foreign References:
| JP2010524184A | 2010-07-15 | |||
| JP2018137044A | 2018-08-30 |
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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