Compact light emitting device package with enhanced heat dissipation and method for making the package

1. A light emitting device package comprising:

a first leadframe having a first surface;

a light source mounted on said first surface of said first leadframe;

a second leadframe having a second surface, said second surface being positioned at a higher level than said first surface; and

an electrical connection between said light source and said second surface of said second leadframe,

wherein said first leadframe includes a frontal extension that extends from said first surface, said frontal extension providing an electric path to said light source mounted on said first surface of said first leadframe, said first leadframe further including a pair of wing-like extensions that extend from said first surface, each of said wing-like extensions providing a heat path away from said light source mounted on said first surface of said first leadframe, said heat path provided by each of said wing-like extensions being a different path than said electric path provided by said frontal extension.

2. The light emitting device package of claim 1 wherein said light source includes a light emitting diode die.

3. The light emitting device package of claim 1 wherein said wing-like extensions are bent such that ends of said wing-like extensions are positioned below said first surface of said first leadframe.

4. The light emitting device package of claim 1 wherein said first surface of said first leadframe and said second surface of said second leadframe are substantially planar surfaces.

5. The light emitting device package of claim 1 wherein said electrical connection includes a bond wire connected to said light source and said second surface of said second leadframe.

6. The light emitting device package of claim 1 further comprising a reflector cup positioned over said first surface of said first leadframe, said reflector cup including an opening to expose a portion of said second surface of said second leadframe.

7. A method for making a light emitting device package, said method comprising:

providing first and second leadframes, said first leadframe including a first surface, said second leadframe including a second surface;

attaching the first and second leadframes to a structural body such that said second surface of said second leadframe is positioned at a higher level than said first surface of said first leadframe;

mounting a light source onto said first surface of said first leadframe; and

electrically connecting said light source to said second surface of said second leadframe,

wherein said first leadframe includes a frontal extension that extends from said first surface, said frontal extension providing an electric path to said light source mounted on said first surface of said first leadframe, said first leadframe further including a pair of wing-like extensions that extend from said first surface, each of said wing-like extensions providing a heat path away from said light source mounted on said first surface of said first leadframe, said heat path provided by each of said wing-like extensions being a different path than said electric path provided by said frontal extension.

8. The method of claim 7 wherein said light source is a light emitting diode die.

9. The method of claim 7 further comprising affixing a reflector cup to said structural body such that said reflector cup is positioned over said first surface of said first leadframe, said reflector cup including an opening to expose a portion of said second surface of said second leadframe.

10. The method of claim 7 wherein said first surface of said first leadframe and said second surface of said second leadframe are substantially planar surfaces.

11. The method of claim 7 wherein said electrical connecting includes electrically connecting said light source to said second surface of said second leadframe using a bond wire.

12. A light emitting device package comprising:

a structural body;

a first leadframe having a first surface attached to said structural body;

a light emitting diode die mounted on said first surface of said first leadframe;

a second leadframe having a second surface attached to said structural body, said second surface being positioned at a higher level than said first surface of said first leadframe;

a reflector cup positioned over said first surface of said first leadframe such that said light emitting diode die is positioned within said reflector cup, said reflector cup including an opening to expose a portion of said second surface of said second leadframe; and

a bond wire connected to said light emitting diode die and said second surface of said second leadframe,

wherein said first leadframe includes a frontal extension that extends from said first surface, said frontal extension providing an electric path to said light emitting diode die mounted on said first surface of said first leadframe, said first leadframe further including a pair of wing-like extensions that extend from said first surface, each of said wing-like extensions providing a heat path away from said light emitting diode die mounted on said first surface of said first leadframe, said heat path provided by each of said wing-like extensions being a different path than said electric path provided by said frontal extension.

13. The light emitting device package of claim 12 wherein said first surface of said first leadframe and said second surface of said second leadframe are substantially planar surfaces.

14. The light emitting device package of claim 12 wherein said structural body is made of a plastic material.