US 12,075,652 B2
Light-emitting device, display device, imaging device, and electronic device, with substrate, lens including convex curved surface portion, and light-emitting part between surface of substrate and lens
Shoma Hinata, Kanagawa (JP); Hiroaki Sano, Kanagawa (JP); Koji Ishizuya, Kanagawa (JP); and Yojiro Matsuda, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 7, 2021, as Appl. No. 17/495,947.
Claims priority of application No. 2020-180532 (JP), filed on Oct. 28, 2020.
Prior Publication US 2022/0131112 A1, Apr. 28, 2022
Int. Cl. H10K 50/858 (2023.01); H01L 27/146 (2006.01); H01L 33/52 (2010.01); H01L 33/54 (2010.01); H10K 50/81 (2023.01); H10K 50/82 (2023.01); H10K 59/35 (2023.01); H10K 59/80 (2023.01)
CPC H10K 50/858 (2023.02) [H01L 27/14627 (2013.01); H01L 33/52 (2013.01); H01L 33/54 (2013.01); H10K 50/81 (2023.02); H10K 50/82 (2023.02); H10K 59/35 (2023.02); H10K 59/873 (2023.02)] 14 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a substrate;
a lens provided above a main surface of the substrate; and
a light-emitting part provided between the main surface of the substrate and the lens,
wherein the lens has a convex curved surface portion on an opposite side to the substrate,
wherein in a first direction perpendicular to the main surface of the substrate, the light-emitting part is provided at a position more distant from the lens than a curvature center of the curved surface portion,
wherein when an apex of the curved surface portion in the first direction is referred to as a first position, and an end of the curved surface portion in a second direction in parallel with the substrate is referred to as a second position, and h represents a distance from the first position to the second position in the first direction, and r represents a distance from the first position to the second position in the second direction,
h/r<0.95 is satisfied, and
wherein 0.4<d/R<1 is satisfied where d represents a distance in the first direction from the light-emitting part to the curvature center of the curved surface portion, and R represents a curvature radius of the curved surface portion.