Title:
BACKLIGHT
Document Type and Number:
WIPO Patent Application WO/2020/203941
Kind Code:
A1
Abstract:
A backlight (1) comprises: a back case (2); a light guide plate (3) which has one major surface serving as a light-output surface, another major surface opposite the light-output surface serving as reflective surface, and one side surface serving as an input-light surface, and which is disposed on the back case (2) with the reflective surface facing downward; a light source (4) which is disposed in the back case (2) opposite the input-light surface of the light guide plate (3); and a diffusing sheet (6) which is disposed on the light-output surface of the light guide plate (3) and includes a reflecting portion (6c) provided in an end portion opposite the light source (4). The diffusing sheet (6) is disposed on the light-output surface of the light guide plate (3) in such a way that a direction in which the diffusing sheet (6) may extend due to thermal expansion coincides with a direction from the side surface of the light guide plate (3) opposite the light source (4) to the light source (4).
Inventors:
MIYASHITA TAKUMI (JP)
WATANABE TAKASHI (JP)
ICHIKAWA HIROSHI (JP)
WATANABE KIYOKAZU (JP)
SHIMURA TAKASHI (JP)
SHIMIZU TAKAHIRO (JP)
KASHIWAGI NAOYA (JP)
MATSUURA RYO (JP)
TAMURA RYO (JP)
WATANABE TAKASHI (JP)
ICHIKAWA HIROSHI (JP)
WATANABE KIYOKAZU (JP)
SHIMURA TAKASHI (JP)
SHIMIZU TAKAHIRO (JP)
KASHIWAGI NAOYA (JP)
MATSUURA RYO (JP)
TAMURA RYO (JP)
Application Number:
PCT/JP2020/014412
Publication Date:
October 08, 2020
Filing Date:
March 27, 2020
Export Citation:
Assignee:
CITIZEN ELECTRONICS (JP)
CITIZEN WATCH CO LTD (JP)
CITIZEN WATCH CO LTD (JP)
International Classes:
F21S2/00; G02F1/13357
Domestic Patent References:
| WO2016181838A1 | 2016-11-17 |
Foreign References:
| JP2007234412A | 2007-09-13 | |||
| JP2013026110A | 2013-02-04 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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