Light emitting device package and method of fabricating the same
A light emitting device package and a method of manufacturing the light emitting device package are provided. A base is first provided and a hole is formed on the base. After a light emitting portion is formed on the base, a mold die is placed on the light emitting portion and a molding material is injected through the hole. The mold die is removed to complete the package.
1. A backlight unit comprising:
a board including a top surface and a bottom surface;
at least two circuit layers on the top surface of the board, wherein the at least two circuit layers include a first circuit layer and a second circuit layer;
at least one light emitting device on the top surface of the board and electrically connected to the at least two circuit layers, wherein the at least two circuit layers are electrically separated from each other and separately disposed on opposite sides of the at least one light emitting device;
a lens on the at least one light emitting device and the at least two circuit layers, wherein the lens is disposed on the top surface of the board; and
a light guide panel on the lens,
wherein the lens comprises a center recessed portion at a top surface, a flat side surface perpendicular to the top surface of the board, a curved surface connecting the center recessed portion with the flat side surface, and a plurality of protrusion portions protruded in a lower direction on a lower surface of the lens,
wherein at least one protrusion portion of the plurality of protrusion portions is disposed between the first circuit layer and the at least one light emitting device, and wherein at least one protrusion portion of the plurality of protrusion portions is disposed between the second circuit layer and the at least one light emitting device.
2. The backlight unit according to claim 1 , wherein light emitted from the at least one light emitting device through the lens has a peak intensity in a direction within a range of −60° to −90° and 60° to 90°, where both side directions of the at least one light emitting device are set from 90° to −90° and a vertical direction of the at least one light emitting device is set as 0°.
3. The backlight unit according to claim 1 , wherein the at least two circuit layers are directly formed on the board.
4. The backlight unit according to claim 1 , wherein the lens is directly contacted with the board and the at least two circuit layers.
5. The backlight unit according to claim 1 , wherein the at least one light emitting device includes at least one of a red light emitting device, a green light emitting device, a blue light emitting device, a yellow light emitting device, or an orange light emitting device.
6. The backlight unit according to claim 1 , wherein the lens includes epoxy or silicon material.
7. The backlight unit according to claim 1 , wherein the at least one light emitting device is directly mounted on the board.
8. The backlight unit according to claim 1 , wherein the board is formed of a printed circuit board.
9. The backlight unit according to claim 1 , wherein the light guide panel includes diffusing patterns.
10. The backlight unit according to claim 9 , wherein the diffusing patterns are spaced from each other.
11. The backlight unit according to claim 9 , wherein the diffusing patterns are overlapped with the lens in a vertical direction.