BACKGROUND

The present disclosure relates to a light emitting device and method of manufacturing a light emitting device.

For example, Japanese Patent Publication No. 2013-12545 discloses a light emitting device in which a fluorescent plate is bonded onto a light emitting element, and the periphery of the fluorescent plate is covered with a light-reflective white member. The upper surface of the light emitting device has two colors: the color of a fluorescent material contained in the fluorescent plate (e.g. yellow) and the color of the white member (white).

In addition, some light emitting devices have a configuration in which no light reflecting member is provided on a lateral surface of a wavelength conversion member such as a fluorescent layer (see, for example, Japanese Patent Publication No. 2013-77679).

When the light emitting device disclosed in the Publication No. 2013-12545 is used as, for example, a light source of a lighting device such as a flashlight for a camera of a smartphone, the color of the fluorescent material and the color of the white member appear on a lens during a non-light-emission period. Thus, for example, depending on the design of a smartphone or a cover thereof, the upper surface of the light emitting device disclosed in the Publication No. 2013-12545 has a part different color from the wavelength conversion member, and has an unfavorable appearance.

The light emitting device disclosed in the Publication No. 2013-77679 has the color of the wavelength conversion member over the entire upper surface of the light emitting device, but the light emitting device has a wide light emitting region during a light-emission period, and small contrast of lightness and darkness.

SUMMARY

Certain embodiment according to the present disclosure is intended to provide a light emitting device having the color of a wavelength conversion member over the entire upper surface of the light emitting device during a non-light-emission period, and has large contrast of lightness and darkness in a light emitting region on the upper surface thereof during a light-emission period, and a method of manufacturing the light emitting device.

A light emitting device according to certain embodiment of the present disclosure includes a light emitting element, a light guide member, a reflecting member, a wavelength conversion member. The light emitting element has a light emitting surface and lateral surfaces. The light guiding member is provided on at least a portion of the lateral surfaces of the light emitting element. The reflecting member is provided on the lateral surface of the light emitting element with the light guiding member interposed therebetween. The wavelength conversion member is provided on the light emitting surface of the light emitting element, the light guiding member and the reflecting member. The wavelength conversion member is provided with a recess between an outer lateral surface of the wavelength conversion member and the light guiding member. The reflecting member is provided in the recess.

A method of manufacturing a light emitting device according to certain embodiment of the present disclosure includes: disposing a light emitting element on a wavelength conversion member such that a light emitting surface of the light emitting element faces a first surface of the wavelength conversion member opposite to a second surface of the wavelength conversion member, while providing a light guiding member so as to cover at least a portion of lateral surfaces of a light emitting element; forming a recess at a periphery of the light guiding member by removing a part of the wavelength conversion member at a periphery of the light guiding member; and disposing a reflecting member in the recess and to cover the light emitting element and the light guiding member.

A method of manufacturing a light emitting device according to certain embodiment of the present disclosure includes: disposing a light emitting element on a wavelength conversion member such that a light emitting surface of the light emitting element faces a first surface of the wavelength conversion member opposite to a second surface of the wavelength conversion member, while providing a light guiding member so as to cover at least a portion of lateral surfaces of a light emitting element; covering the light emitting element and the light guiding member with a first reflecting member; forming a recess passing through the first reflecting member at a periphery of the light guiding member by piercing the first reflecting member at the periphery of the light guiding member, and removing a part of the wavelength conversion member; and supplying a second reflecting member in the recess.

The light emitting device of the embodiment according to the present disclosure can have the color of the wavelength conversion member over the entire upper surface of the light emitting device during a non-light-emission period, and have large contrast of lightness and darkness in a light emitting region during a light-emission period.

The method of manufacturing the light emitting device of the embodiment according to the present disclosure can achieve the light emitting device having the color of the wavelength conversion member over the entire upper surface of the light emitting device during a non-light-emission period, and having large contrast of lightness and darkness in a light emitting region during a light-emission period.

