Title:
SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/070332
Kind Code:
A1
Abstract:
Provided is a surface light source device with which it is possible to improve the uniformity of brightness distribution on a light diffusion plate, even when using a light-emitting device that emits light in two opposite directions that are roughly parallel to a bottom plate. The surface light source device has a housing, a first light-emitting device row and second light-emitting device row, and a light diffusion plate. A plurality of light-emitting devices are positioned at the same interval in the first light-emitting device row and the second light-emitting device row. A plurality of light-emitting devices included in the first light-emitting device row and the second light-emitting device row are positioned so that two adjacent light-emitting devices included in one of the first light-emitting device row or the second light-emitting device row are located at equal distances from one light-emitting device included in the other of the first light-emitting device row or the second light-emitting device row. The center of the first light-emitting device row and the center of the second light-emitting device row are separated.
Inventors:
OHASHI YUSUKE
Application Number:
PCT/JP2019/040044
Publication Date:
April 15, 2021
Filing Date:
October 10, 2019
Export Citation:
Assignee:
ENPLAS CORP (JP)
International Classes:
F21S2/00; F21V5/00; F21Y115/10
Foreign References:
| JP2013012380A | 2013-01-17 | |||
| JP2007220765A | 2007-08-30 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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