Light emitting device with phosphor layer
A method for manufacturing a light emitting device, having; a die bonding step of mounting a light emitting element on a board; a phosphor layer formation step of forming a phosphor layer that contains a phosphor by spraying on surfaces of the board and the light emitting element after the die bonding step; and a cover layer formation step of forming a cover layer that contains at least one type of light reflecting material and light blocking material on a surface of the phosphor layer over the board.
1. A light emitting device, comprising:
a board;
a light emitting element mounted on the board;
a phosphor layer composed in a substantially uniform thickness of a plurality of layers formed on surfaces of the light emitting element and the board; and
a cover layer that covers the phosphor layer over the board and contains at least one type of light reflecting material and light blocking material,
the phosphor layer being located on or above the light emitting element has a region where the cover layer is not provided.
2. The light emitting device according to claim 1 , wherein,
the board has a mounting portion on which the light emitting element is mounted and a groove formed surrounding an outer periphery of the mounting portion.
3. The light emitting device according to claim 2 , further comprising
a light reflecting member embedded in the groove.
4. The light emitting device according to claim 1 , wherein the thickness of the phosphor layer is from 10 μm to 200 μm.
5. The light emitting device according to claim 1 , wherein the number of each layer in the plurality of layers of the phosphor layer is 1 to 20.
6. The light emitting device according to claim 1 , wherein the thickness of each layer in the plurality of layers of the phosphor layer is from 5 μm to 20 μm.
7. The light emitting device according to claim 1 , wherein the thickness of the cover layer is from 10 μm to 30 μm.
8. The light emitting device according to claim 1 , wherein the cover layer is formed as a single member, or as multiple layers.
9. The light emitting device according to claim 1 , wherein the cover layer includes a binder, a color fixative, a light diffusing agent, or a filler.
10. The light emitting device according to claim 1 , wherein the light emitting element, the phosphor layer, and the cover layer are sealed with a transmissive resin or other such sealing member.
11. The light emitting device according to claim 10 , wherein the transmissive resin is a hemispherical shape.
12. The light emitting device according to claim 10 , wherein the transmissive resin is in a shape that combines a substantially cuboid shape, a hemispherical shape, and a plurality of hemispheres.