US 11,768,325 B2
Display device, illumination device, and light guiding member
Koji Hiramoto, Tokyo (JP); Masafumi Okada, Tokyo (JP); Hiroshi Nakamoto, Tokyo (JP); Ken Kagabu, Tokyo (JP); and Ken Sugiyama, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on May 12, 2022, as Appl. No. 17/742,653.
Application 17/742,653 is a continuation of application No. 17/357,145, filed on Jun. 24, 2021, granted, now 11,333,818.
Application 17/357,145 is a continuation in part of application No. PCT/JP2019/039399, filed on Oct. 4, 2019.
Claims priority of application No. 2018-245958 (JP), filed on Dec. 27, 2018.
Prior Publication US 2022/0268986 A1, Aug. 25, 2022
Int. Cl. F21V 8/00 (2006.01); G02F 1/13357 (2006.01)
CPC G02B 6/0045 (2013.01) [G02B 6/0021 (2013.01); G02B 6/0066 (2013.01); G02B 6/0073 (2013.01); G02F 1/133603 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel configured to transmit light; and
an illumination device provided on a rear surface side of the display panel,
wherein
the illumination device includes
a plurality of light sources configured to emit light, and
a light guiding member that has translucency and is arranged at the rear surface side of the display panel,
the light guiding member has a plurality of holes each of which passes through the light guiding member completely in a first direction that intersects a rear surface of the display panel,
each of the light sources is housed in a corresponding one of the holes,
a rear surface of the light guiding member has a first inclined surface inclined upwardly from a light source housed in one of the holes,
a front surface side of the light guiding member has a second inclined surface inclined upwardly from the light source housed in the one of the holes, and
an angle of the first inclined surface to a center line of the one of the holes is greater than an angle of the second inclined surface to the center line, a direction of the center line being perpendicular to a main surface of the display panel.