US 12,282,224 B2
Backlight and display device
Takashi Ota, Tokyo (JP); Michihide Shibata, Tokyo (JP); Nobuyuki Suzuki, Tokyo (JP); and Masafumi Okada, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Aug. 7, 2024, as Appl. No. 18/796,391.
Claims priority of application No. 2023-135276 (JP), filed on Aug. 23, 2023.
Prior Publication US 2025/0068011 A1, Feb. 27, 2025
Int. Cl. G02F 1/1335 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/133607 (2021.01) [G02F 1/133603 (2013.01); G02F 1/133605 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A backlight comprising:
a light source capable of emitting light spreading in a first direction and a second direction perpendicular to each other, from an optical axis;
a first cylindrical lens that refracts and brings the light closer along the first direction to the optical axis, the first cylindrical lens overlapping with the light source in a third direction perpendicular to the first direction and the second direction;
a second cylindrical lens that refracts and brings the light even closer along the first direction to the optical axis, the second cylindrical lens overlapping with the light source and the first cylindrical lens in the third direction; and
a reflector that reflects and brings the light closer along the second direction to the optical axis, the reflector being positioned between the first cylindrical lens and the second cylindrical lens in the third direction, the reflector avoiding overlap with the light source.