Light-emitting device, display apparatus, and lighting apparatus
There is provided a light-emitting device that exhibits superior luminance contribution rate of a light source while reducing in-plane luminance unevenness despite a simple configuration. The light-emitting device includes: a substrate on which one or more light sources are provided; and a reflective plate placed on the substrate. The reflective plate includes: an opening into which the light source is inserted; a sloped section that is sloped relative to the substrate while surrounding the opening, and has a first thickness; and a top surface section that is coupled to a top end of the sloped section, and has a second thickness. The first thickness is greater than the second thickness.
1. A light-emitting device comprising:
a substrate on which one or more light sources are provided; and
a reflective plate placed on the substrate, wherein
the reflective plate includes
an opening into which the light source is inserted,
a sloped section sloped relative to the substrate while surrounding the opening, the sloped section having a first thickness, and
a top surface section coupled to a top end of the sloped section, the top surface section having a second thickness, and
the first thickness is greater than the second thickness.
2. The light-emitting device according to claim 1 , wherein
the reflective plate further includes a bottom surface section that includes the opening and is coupled to a bottom end of the sloped section, the bottom surface section having a third thickness, and
the third thickness is smaller than the first thickness.
3. The light-emitting device according to claim 2 , wherein
the light source has a light-emitting point, and
the third thickness is smaller than a distance from the substrate to the light-emitting point.
4. The light-emitting device according to claim 2 , wherein the reflective plate is configured in such a manner that the bottom surface section, the sloped section, and the top surface section are molded integrally.
5. The light-emitting device according to claim 1 , wherein
the top surface section includes a top surface extending along the substrate, and
the top surface includes one or both of a concave part and a convex part.
6. The light-emitting device according to claim 1 , wherein the reflective plate further includes a reflective film that covers the sloped section.
7. The light-emitting device according to claim 1 , wherein the sloped section includes a concave surface.
8. The light-emitting device according to claim 1 , wherein
the sloped section includes an inner surface having a first glossiness, and
the top surface section includes a top surface having a second glossiness smaller than the first glossiness.
9. The light-emitting device according to claim 1 , further comprising a light diffusion member provided on side opposite to the substrate, with the reflective plate being interposed in between.
10. A display apparatus provided with a liquid crystal panel and a light-emitting device on backside of the liquid crystal panel, the light-emitting device comprising:
a substrate on which a light source is provided; and
a reflective plate placed on the substrate, wherein
the reflective plate includes
an opening into which the light source is inserted,
a sloped section sloped relative to the substrate while surrounding the opening, the sloped section having a first thickness, and
a top surface section coupled to a top end of the sloped section, the top surface section having a second thickness, and
the first thickness is greater than the second thickness.
11. A lighting apparatus provided with a light-emitting device, the light-emitting device comprising:
a substrate on which one or more light sources are provided; and
a reflective plate placed on the substrate, wherein
the reflective plate includes
an opening into which the light source is inserted,
a sloped section sloped relative to the substrate while surrounding the opening, the sloped section having a first thickness, and
a top surface section coupled to a top end of the sloped section, the top surface section having a second thickness, and
the first thickness is greater than the second thickness.