US 12,328,984 B2
Display device and method for manufacturing display device
Shun Tanaka, Kyoto (JP); Masaru Terashita, Kyoto (JP); Jun Sasaki, Kyoto (JP); Chuzo Taniguchi, Kyoto (JP); and Kenichiro Suzuki, Kyoto (JP)
Assigned to Nissha Co., Ltd., Kyoto (JP)
Appl. No. 18/031,996
Filed by NISSHA CO., LTD., Kyoto (JP)
PCT Filed Oct. 14, 2021, PCT No. PCT/JP2021/038018
§ 371(c)(1), (2) Date Apr. 14, 2023,
PCT Pub. No. WO2022/080445, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 2020-174541 (JP), filed on Oct. 16, 2020.
Prior Publication US 2023/0395000 A1, Dec. 7, 2023
Int. Cl. G09F 13/04 (2006.01); B60K 35/00 (2024.01); G09F 13/22 (2006.01); H01L 25/075 (2006.01); H01L 33/62 (2010.01); H10H 20/857 (2025.01); B60K 35/22 (2024.01); H10H 20/01 (2025.01)
CPC H10H 20/857 (2025.01) [B60K 35/00 (2013.01); G09F 13/22 (2013.01); H01L 25/0753 (2013.01); B60K 35/22 (2024.01); H10H 20/0364 (2025.01)] 20 Claims
OG exemplary drawing
 
1. A display device, comprising:
a light guide member made of a resin and including a first main surface and a second main surface facing the first main surface, the light guide member allowing visible light to pass through the light guide member, the light guide member including a first groove formed in the first main surface;
a first light-emitting element disposed on the first main surface of the light guide member and arranged to emit visible light into the light guide member;
a second light-emitting element disposed on the first main surface or the second main surface of the light guide member and arranged to emit visible light into the light guide member;
a decorative layer molded integrally with the light guide member and provided on at least one of the first main surface and the second main surface of the light guide member, the decorative layer including a first light-emitting portion allowing the visible light emitted from the first light-emitting element to be radiated from the light guide member to an outside and a second light-emitting portion allowing the visible light emitted from the second light-emitting element to be radiated from the light guide member to the outside; and
a light absorbing member disposed on a first groove bottom of the first groove the light absorbing member having a higher absorptivity of visible light than the light guide member,
wherein the light absorbing member is a rod-shaped member disposed in contact with the first groove bottom and not in contact with a side surface of the first groove,
wherein the light guide member includes a first region in contact with one side surface of the first groove and a second region in contact with the other side surface of the first groove,
the first light-emitting element and the first light-emitting portion are disposed in the first region, and the second light-emitting element and the second light-emitting portion are disposed in the second region, and
the first groove is disposed at a position in which a first optical path from the first light-emitting element toward the second region is blocked and a second optical path from the second light-emitting element toward the first region is blocked.