Light emitting device package including UV light emitting diode
Provided is a light emitting device package, which includes a ceramic body, an ultraviolet light emitting diode, a support member, and a glass film. The ceramic body defines a cavity. The ultraviolet light emitting diode is disposed within the cavity. The support member is disposed on the body, and surrounds the cavity. The glass film is coupled to the support member, and covers the cavity. Since the light emitting device package includes the ceramic body to efficiently dissipate heat, and the glass film is directly attached to the ceramic body to decrease the number of components, thereby simplifying the manufacturing process thereof, and reducing the manufacturing costs thereof.
1. An ultraviolet light emitting device package comprising:
a body comprising ceramic insulating layers defining a cavity having a bottom;
an ultraviolet light emitting diode disposed within the cavity;
a first electrode and a second electrode, which are spaced apart from each other on the body, and are electrically connected to the ultraviolet light emitting diode;
a support member disposed on the body, and surrounding the cavity; and
a glass film coupled to the support member, and covering the cavity,
wherein the first electrode being disposed on one of the ceramic insulating layers and the second electrode being disposed on an other of the ceramic insulating layers, and
wherein the ceramic insulating layers comprise;
a first insulating layer exposed on the bottom of the cavity;
a second insulating layer disposed on the first insulating layer; and
a third insulating layer exposing a portion of the second insulating layer,
wherein the first electrode is exposed on the second insulating layer, the second electrode is exposed on the first insulating layer and the second insulating layer.
2. The ultraviolet light emitting device package according to claim 1 , wherein the cavity has a side step structure,
the first electrode is exposed to the side step structure of the cavity, and
the second electrode is exposed to a bottom of the cavity.
3. The ultraviolet light emitting device package according to claim 2 , wherein the first and second electrodes are connected to a pad surrounding an outer surface of the body, and disposed on a bottom surface of the body.
4. The ultraviolet light emitting device package according to claim 3 , wherein the first and second electrodes have a multi-layered structure.
5. The ultraviolet light emitting device package according to claim 4 , wherein the first and second electrodes are alternately formed with the ceramic insulating layers.
6. The ultraviolet light emitting device package according to claim 5 , wherein the support member comprises at least one coupling protrusion on a top surface thereof, and
the glass film comprises at least one coupling recess in which the coupling protrusion is fitted.
7. The ultraviolet light emitting device package according to claim 5 , wherein the support member comprises at least one coupling recess in a top surface thereof, and
the glass film comprises at least one coupling protrusion is fitted in the coupling recess.
8. The ultraviolet light emitting device package according to claim 5 , further comprising at least one fixing pin fixing the glass film and the support member.
9. The ultraviolet light emitting device package according to claim 8 , wherein the fixing pin comprises:
a pin head having a diameter greater than a diameter of a through hole of the glass film; and
a pin body extending from the pin head, and fitted in the through hole.
10. The ultraviolet light emitting device package according to claim 9 , wherein the pin body comprises a screw thread protrusion on an outer surface thereof.
11. The ultraviolet light emitting device package according to claim 5 , wherein an adhesive member is disposed between a top surface of the support member and the glass film.
12. The ultraviolet light emitting device package according to claim 11 , wherein the adhesive member comprises an ultraviolet adhesive.
13. The ultraviolet light emitting device package according to claim 12 , wherein the glass film comprises at least one adhering hole filled with the adhesive member.
14. The ultraviolet light emitting device package according to claim 5 , wherein the support member comprises a recess in an inner surface thereof, and
the glass film is slid in the recess.
15. The ultraviolet light emitting device package according to claim 5 , wherein the body comprises at least one heat dissipation hole extending from the bottom of the cavity to the bottom surface of the body.
16. The ultraviolet light emitting device package according to claim 1 , wherein the support member is integrally formed with the body.
17. The ultraviolet light emitting device package according to claim 1 , further comprising a color light emitting diode within the cavity of the body to display an operation of the ultraviolet light emitting diode.
18. The ultraviolet light emitting device package according to claim 5 , further comprising a Zener diode within the cavity of the body,
wherein an overcurrent flowing to the ultraviolet light emitting diode flows to the Zener diode.
19. The ultraviolet light emitting device package according to claim 18 , further comprising a dummy electrode disposed on the body, and the Zener diode is connected to the dummy electrode.