CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to Japanese Patent Application No. 2019-181023 filed on Sep. 30, 2019, and Japanese Patent Application No. 2019-181024 filed on Sep. 30, 2019, the disclosures of which are hereby incorporated herein by reference in their entireties.

BACKGROUND

The present disclosure relates to a light emitting device.

There has been proposed a backlight device in which a plurality of light sources and a reflecting member (reflector) provided with wall parts respectively surrounding the light sources are disposed on a substrate (see paragraph 0032 in WO 2012/023459).

There is demand for a light emitting device with good (or high) light extraction efficiency.

SUMMARY

The present disclosure includes the following embodiment.

According to an embodiment of the present disclosure, a light emitting device includes a substrate, a plurality of light sources, a light reflecting member and a resin member. The substrate defines a through hole penetrating through the substrate in a thickness direction. The light sources are disposed on the substrate. The light reflecting member is disposed on the substrate and including a wall part having a first surface and a second surface. The first surface defines a plurality of surrounding parts respectively surrounding each of the light sources individually or two or more of the light sources in groups. The second surface is on an opposite side of the first surface and defines a hollow part. The resin member is disposed inside the hollow part. The hollow part defines a first opening on a substrate side of the wall part. The through hole defines a second opening at an upper surface of the substrate, the second opening being positioned inner than the first opening in the top view. The resin member is continuously in contact with the second surface of the wall part defining the hollow part and the upper surface of the substrate in a region between a peripheral edge of the second opening and a peripheral edge of the first opening.

Furthermore, the present disclosure includes the following embodiment.

According to an embodiment of the present disclosure, a light emitting device includes a substrate, a plurality of light sources, and a plurality of light reflecting members. The light sources are disposed on the substrate. The light reflecting members are disposed on the substrate. The light reflecting members respectively include wall parts each surrounding each of the light sources individually or two or more of the light sources in groups. Two adjacent ones of the light reflecting members are joined to each other such that outer surfaces of the wall parts of the two adjacent ones of the light reflecting members are bonded to each other via an adhesive agent.

Certain embodiment of the present disclosure can provide a light emitting device with good (or high) light extraction efficiency.

