A light-emitting device (10, 20), comprising: a light source substrate including a plurality of light sources; a first reflection member including a plurality of first apertures and a first overlap portion (R1, R1X, R1Y) and located to overlap a portion of the light source substrate, each of the plurality of first apertures provided at a position corresponding to a relevant one of a plurality of first light sources of the plurality of light sources, and the first overlap portion (R1, R1X, R1Y) provided along an outer edge of the first reflection member; and a second reflection member including a plurality of second apertures and a second overlap portion (R2, R2X, R2Y) and located to overlap another portion of the light source substrate, each of the plurality of second apertures provided at a position corresponding to a relevant one of a plurality of second light sources of the plurality of light sources, and the second overlap portion (R2, R2X, R2Y) provided along an outer edge of the second reflection member and overlapping the first overlap portion, wherein the first reflection member and the second reflection member are provided at positions adjacent to each other in an in-plane direction, and are disposed to allow relative positions of the first reflection member and the second reflection member in the in-plane direction to be displaced within a range in which the first overlap portion (R1, R1X, R1Y) and the second overlap portion (R2, R2X, R2Y) overlap each other, characterized by the first overlap portion (R1, R1X, R1Y) includes a boundary aperture and a first facing surface, the boundary aperture being some of the plurality of first apertures, and the first facing surface facing the second overlap portion (R2, R2X, R2Y), in a close state in which the first reflection member and the second reflection member are relatively close to each other, the first facing surface is exposed from the boundary aperture, and reflectivity of the first facing surface is lower than reflectivity of an inner surface of the boundary aperture. a light source substrate including a plurality of light sources; a first reflection member including a plurality of first apertures and a first overlap portion (R1, R1X, R1Y) and located to overlap a portion of the light source substrate, each of the plurality of first apertures provided at a position corresponding to a relevant one of a plurality of first light sources of the plurality of light sources, and the first overlap portion (R1, R1X, R1Y) provided along an outer edge of the first reflection member; and a second reflection member including a plurality of second apertures and a second overlap portion (R2, R2X, R2Y) and located to overlap another portion of the light source substrate, each of the plurality of second apertures provided at a position corresponding to a relevant one of a plurality of second light sources of the plurality of light sources, and the second overlap portion (R2, R2X, R2Y) provided along an outer edge of the second reflection member and overlapping the first overlap portion, wherein the first reflection member and the second reflection member are provided at positions adjacent to each other in an in-plane direction, and are disposed to allow relative positions of the first reflection member and the second reflection member in the in-plane direction to be displaced within a range in which the first overlap portion (R1, R1X, R1Y) and the second overlap portion (R2, R2X, R2Y) overlap each other, characterized by the first overlap portion (R1, R1X, R1Y) includes a boundary aperture and a first facing surface, the boundary aperture being some of the plurality of first apertures, and the first facing surface facing the second overlap portion (R2, R2X, R2Y), in a close state in which the first reflection member and the second reflection member are relatively close to each other, the first facing surface is exposed from the boundary aperture, and reflectivity of the first facing surface is lower than reflectivity of an inner surface of the boundary aperture.