Title:
LIGHT-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/261567
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a light-emitting device that is unlikely to generate luminance unevenness. This light-emitting device has: a substrate having a first region and a second region disposed in the surroundings of the fist region; a plurality of light-emitting elements mounted on the substrate in the second region; a sealing material disposed on the substrate so as to cover the plurality of light-emitting elements; a reflective material disposed on an upper side of the sealing material and the opposite side of the first region; and a light guide material that has an upper surface and is disposed in the first region facing a first region-side side surface of the sealing material.
Inventors:
SEGAWA KOKI (JP)
IINO TAKASHI (JP)
KATSUMATA TOSHINOBU (JP)
IMAI SADATO (JP)
IINO TAKASHI (JP)
KATSUMATA TOSHINOBU (JP)
IMAI SADATO (JP)
Application Number:
PCT/JP2021/024013
Publication Date:
December 30, 2021
Filing Date:
June 24, 2021
Export Citation:
Assignee:
CITIZEN ELECTRONICS (JP)
CITIZEN WATCH CO LTD (JP)
CITIZEN WATCH CO LTD (JP)
International Classes:
H01L33/52; F21S2/00; F21V7/00; F21V9/32; H01L33/50; H01L33/58; H01L33/60; F21Y105/18; F21Y113/13; F21Y115/10
Foreign References:
| JP2018120959A | 2018-08-02 | |||
| JP2020088051A | 2020-06-04 | |||
| JP2020027814A | 2020-02-20 | |||
| JP2013178946A | 2013-09-09 | |||
| JP2010277851A | 2010-12-09 | |||
| JPH03261988A | 1991-11-21 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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