Light emitting diode package and method of manufacturing the same

• US 8,115,214 B2
• Filed: 02/23/2007
• Issued: 02/14/2012
• Est. Priority Date: 02/23/2006
• Status: Active Grant

• Current Assignee: Suzhou Lekin Semiconductor Company Limited
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Son, Won-Jin
• Primary Examiner(s): Tran, Minhloan T
• Assistant Examiner(s): YEUNG LOPEZ, FEIFEI
• Application Number:
  US11/709,764
• Publication Number:
  US 20070194333A1
• Time in Patent Office: 1,817 Days
• Field of Search: None
• US Class Current: 257/88
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/49107 on the semiconductor or solid-state body
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 33/38 with a particular shape
• CPC Class Codes: H01L 33/48 characterised by the semiconductor body packages
• CPC Class Codes: H01L 33/483 Containers
• CPC Class Codes: H01L 33/486 adapted for surface mounting
• CPC Class Codes: H01L 33/50 Wavelength conversion elements
• CPC Class Codes: H01L 33/62 Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls

Abstract

Provided is a light emitting diode package and a method of manufacturing the same. The light emitting diode package includes a package main body with a cavity, a plurality of light emitting diode chips, a wire, and a plurality of lead frames. The plurality of light emitting diode chips are mounted in the cavity. The wire is connected to an electrode of at least one light emitting diode chip. The plurality of lead frames are formed in the cavity, and at least one lead frame is electrically connected to the light emitting diode chip or a plurality of wires.

Claims

1. A light emitting diode package comprising:

a package body including a plurality of electric connections, wherein a lower portion of the package body includes a first region, a second region, and a third region, wherein the second region includes a concave portion and is disposed between the first region and the third region;

a plurality of light emitting diode (LED) chips on the package body, wherein the plurality of LED chips are disposed on the same horizontal plane, wherein the plurality of LED chips include a first and a second electrode and include at least one vertical type LED chip including the first and the second electrode disposed on an upper surface and a lower surface of the at least one vertical type LED chip, respectively, the vertical type LED chip including an n-electrode disposed on the upper surface of the vertical type LED chip, and wherein the plurality of LED chips are configured to emit light having a same color; and

a phosphor layer covering a top surface of the plurality of LED chips, said phosphor layer having one of a flat shape surface, a concave shape, or a convex shape and configured to make the light emitted by the plurality of LED chips with the same color into a white color,

wherein at least two electrodes respectively disposed on upper surfaces of at least two LED chips are commonly connected to at least one of the plurality of electric connections using wires,

wherein an end of an electric connection corresponding to the vertical type LED chip penetrates the package body,

wherein the plurality of LED chips are disposed in the package body, and

wherein the at least one vertical type LED chip is directly bonded to the electric connection corresponding to the at least one vertical type LED chip using a conductive adhesive.

2. The light emitting diode package according to claim 1, wherein the package body includes a cavity, and a mold member comprising the phosphor layer formed in the cavity.

3. The light emitting diode package according to claim 2, wherein the mold member is formed of silicone or epoxy resin.

4. The light emitting diode package according to claim 1, wherein the phosphor layer includes a silicate-based material.

5. The light emitting diode package according to claim 1, wherein a number of the plurality of electric connections is smaller than a number of electrodes of the plurality of LED chips.

6. The light emitting diode package according to claim 1, wherein the electric connections are disposed in a line such that they are spaced from each other.

7. The light emitting diode package according to claim 1, wherein the package body is formed of at least one material selected from the group consisting of PC (polycarbonate), PCABS (polycarbonate acrylonitrile butadiene styrene), PPA (polyphthalamide), nylon, PET (polyethylene terephtalate), or PBT (polybutylene terephtalate).

8. The light emitting diode package according to claim 2, wherein each side surface of the cavity is formed so as to lean outward at a 105-120 degree angle.

9. The light emitting diode package according to claim 1, wherein at least one of the plurality of LED chips is a horizontal type LED chip, and

wherein two electrodes of the horizontal type LED chip are disposed on a same side of the horizontal type LED chip.

10. The light emitting diode package according to claim 9, wherein the horizontal type LED chip is bonded to a corresponding electric connection using a nonconductive adhesive.

11. The light emitting diode package according to claim 1, wherein all of the plurality of LED chips are configured to emit blue light.

17. The light emitting diode package according to claim 1, wherein at least one of the plurality of electric connections is disposed on the concave portion.

18. The light emitting diode package according to claim 17, wherein the at least one of the plurality of electric connections is protruded from the concave portion.

12. A light emitting diode package comprising:

a package body including a plurality of electrical connections and a nonconductive substrate, wherein a lower surface of the package body includes a first region, a second region, and a third region, wherein the second region includes a concave portion and is disposed between the first region and the third region, wherein at least two electrical connections are disposed in the first region and/or the second region of the package body, and wherein the at least two electrical connections pass through the package body in a direction from a top surface of the package body to the lower surface of the package body;

a plurality of light emitting diode (LED) chips arranged in a line on the package body, wherein the plurality of LED chips are disposed on the same horizontal plane, and wherein the plurality of LED chips are configured to emit blue light and include at least one horizontal type LED chip with two electrodes disposed on a same side of the at least one horizontal type LED chip;

a plurality of wires connected to the plurality of LED chips; and

a phosphor layer including a phosphor covering the plurality of LED chips, wherein the phosphor layer has one of a substantially flat shape surface, a concave shape, or a convex shape and is configured to make the blue light emitted by the plurality of LED chips into a white color.

13. The light emitting diode package according to claim 12, wherein the plurality of LED chips are disposed on the nonconductive substrate.

14. The light emitting diode package according to claim 12, further comprising a mold member including the phosphor,

wherein the mold member is formed of silicone or epoxy resin.

15. The light emitting diode package according to claim 12, wherein a number of the plurality of electrical connections is smaller than a number of electrodes of the plurality of LED chips.

16. The light emitting diode package according to claim 12, wherein at least two electrodes respectively disposed on upper surfaces of the plurality of LED chips are commonly connected to at least one of the plurality of electrical connections using wires.

19. A light emitting diode package comprising:

a package body including a plurality of electric connections, wherein a lower portion of the package body includes a first region, a second region, and a third region, wherein the second region includes a concave portion and is disposed between the first region and the third region;

a plurality of light emitting diode (LED) chips on the package body, wherein the plurality of LED chips are disposed on the same horizontal plane, wherein the plurality of LED chips include a first and a second electrode and include at least one horizontal type LED chip including the first and the second electrode disposed on upper surfaces of the at least one horizontal type LED chip, respectively, wherein the plurality of LED chips are configured to emit light having a same color, and wherein at least one of the plurality of LED chips is disposed on at least one electric connection of the plurality of electric connections in the second region; and

a phosphor layer covering a top surface of the plurality of LED chips, said phosphor layer having one of a flat shape surface, a concave shape, or a convex shape and configured to make the light emitted by the plurality of LED chips with the same color into a white color,

wherein at least two electrodes respectively disposed on upper surfaces of at least two LED chips are commonly connected to at least one of the plurality of electric connections using wires, and wherein at least one electric connection in the second region is exposed out of the package body.

20. The light emitting diode package according to claim 19, wherein the package body includes a cavity, and a mold member comprising the phosphor layer formed in the cavity.

21. The light emitting diode package according to claim 20, wherein the mold member is formed of silicone or epoxy resin.

22. The light emitting diode package according to claim 19, wherein a number of the plurality of electric connections is smaller than a number of electrodes of the plurality of LED chips.

23. The light emitting diode package according to claim 19, wherein the electric connections are disposed in a line such that they are spaced from each other.

24. The light emitting diode package according to claim 19, wherein the package body is formed of at least one material selected from the group consisting of PC (polycarbonate), PCABS (polycarbonate acrylonitrile butadiene styrene), PPA (polyphthalamide), nylon, PET (polyethylene terephtalate), or PBT (polybutylene terephtalate).

25. The light emitting diode package according to claim 20, wherein each side surface of the cavity is formed so as to lean outward at a 105-120 degree angle.

26. The light emitting diode package according to claim 19, wherein the at least one horizontal type LED chip is bonded to a corresponding electric connection using a nonconductive adhesive.