Light emitting diode package having frame with bottom surface having two surfaces different in height
A light emitting device can include a substrate including a top surface, an outermost side surface, and a bottom surface; a light emitting diode chip on the top surface of the substrate; a reflecting member disposed on a first portion of the top surface of the substrate and the reflecting member having a cavity; a first metal layer disposed on a second portion of the top surface, one side of the outermost side surface, and a first portion of the bottom surface; a second metal layer disposed on a third portion of the top surface, another side of the outermost side surface, and a second portion of the bottom surface; a heatsink disposed on the bottom surface of the substrate; and at least two heatsink holes in the substrate formed to pass through the substrate, in which the at least two heatsink holes are in contact with the heatsink, and a reflective material is on an inside surface of the at least two heatsink holes, the first metal layer, the second metal layer, and the heatsink are separated from each other on the bottom surface of the substrate, and the at least two heatsink holes are vertically overlapped with the light emitting diode chip and the heatsink.
1. A light emitting device, comprising:
a substrate including a top surface, an outermost side surface, and a bottom surface;
a light emitting diode chip on the top surface of the substrate;
a reflecting member disposed on a first portion of the top surface of the substrate and the reflecting member having a cavity;
a first metal layer disposed on a second portion of the top surface, one side of the outermost side surface, and a first portion of the bottom surface;
a second metal layer disposed on a third portion of the top surface, another side of the outermost side surface, and a second portion of the bottom surface;
a heatsink disposed on the bottom surface of the substrate; and
at least two heatsink holes in the substrate formed to pass through the substrate,
wherein the at least two heatsink holes are in contact with the heatsink, and a reflective material is on an inside surface of the at least two heatsink holes,
wherein the first metal layer, the second metal layer, and the heatsink are separated from each other on the bottom surface of the substrate, and
wherein the at least two heatsink holes are vertically overlapped with the light emitting diode chip and the heatsink.
2. The light emitting device of claim 1 , wherein the reflective material comprises Ag.
3. The light emitting device of claim 1 , wherein the heatsink comprises a first end which is overlapped with the first metal layer or the second metal layer.
4. The light emitting device of claim 1 , wherein the second metal layer comprises one part of the second metal layer disposed in the cavity of the reflecting member.
5. The light emitting device of claim 1 , wherein the reflecting member comprises at least one protruding contact portion toward the substrate.
6. The light emitting device of claim 5 , wherein the at least one protruding contact portion is not overlapped with the light emitting diode chip.
7. The light emitting device of claim 5 , wherein the at least one protruding contact portion is directly in contact with the substrate.
8. The light emitting device of claim 5 , wherein a bottom surface of the at least one protruding contact portion is below a top surface of the first metal layer or the second metal layer.
9. The light emitting device of claim 5 , wherein a width of a top surface of the reflecting member is bigger than that of a bottom surface of the protruding contact portion.
10. The light emitting device of claim 5 , further comprising a lens disposed on the cavity of the reflecting member.
11. The light emitting device of claim 5 , wherein a portion of the at least one protruding contact portion is not vertically overlapped with a lens disposed on the cavity of the reflecting member.
12. The light emitting device of claim 1 , wherein an inner surface of the reflecting member comprises an inclined side surface, a flat top surface, and a vertical side surface.
13. The light emitting device of claim 1 , wherein a thickness of the heatsink is smaller than each width of the at least two heatsink holes.
14. The light emitting device of claim 1 , wherein a distance between the first metal layer on the second portion of the top surface of the substrate and the second metal layer on the third portion of the top surface of the substrate is smaller than a width of the heatsink.
15. The light emitting device of claim 1 , wherein a distance between the heatsink and the second metal layer on the second portion of the bottom surface of the substrate is smaller than a width of the light emitting diode chip.
16. The light emitting device of claim 1 , wherein the cavity of the reflecting member comprises a tetragonal shape cavity.
17. The light emitting device of claim 1 , wherein the at least one protruding contact portion is below the light emitting diode chip.
18. The light emitting device of claim 1 , wherein the at least one protruding contact portion is located at a portion outside of the light emitting diode.
19. The light emitting device of claim 1 , wherein the at least one protruding contact portion comprises two protruding contact portions outside of the light emitting diode.
20. The light emitting device of claim 19 , wherein the at least two heatsink holes are disposed between the two protruding contact portions outside of the light emitting diode.