Light emitting device package

• US 6,700,136 B2
• Filed: 07/30/2001
• Issued: 03/02/2004
• Est. Priority Date: 07/30/2001
• Status: Active Grant

• Current Assignee: Current Lighting Solutions, LLC (f/k/a GE Lighting Solutions, LLC) (American Industrial Partners)
• Original Assignee: General Electric Company
• Inventors: Guida, Renato
• Primary Examiner(s): Coleman, W. David
• Assistant Examiner(s): NGUYEN, KHIEM D
• Application Number:
  US09/682,163
• Publication Number:
  US 20030020081A1
• Time in Patent Office: 946 Days
• Field of Search: 438/26, 438/106, 257/79, 257/80, 257/82, 257/88, 257/98, 257/81, 257/99, 257/100, 257/431, 257/432, 257/433, 156/64, 156/307.3
• US Class Current: 257/79
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• 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
• CPC Class Codes: H01L 33/64 Heat extraction or cooling elements
• CPC Class Codes: H01L 33/641 characterized by the materials

Abstract

A light emitting device (LED) package comprises: a thermally conductive layer; an electrically insulating layer having openings extending therethrough; LEDs situated within the openings of the electrically insulating layer and including contact pads; and electrically conductive strips attached to the contact pads and the electrically insulating layer.

Claims

1. A flexible light emitting device (LED) package comprising:

a thermally conductive layer;

an electrically insulating layer having openings extending therethrough;

LEDs situated within the openings of the electrically insulating layer and including contact pads; and

electrically conductive strips attached to the contact pads and the electrically insulating layer.

2. The LED package of claim 1 wherein the thermally conductive layer comprises a translucent material.

3. The LED package of claim 1 wherein the thermally conductive layer comprises a reflective material.

4. The LED package of claim 1 wherein the thermally conductive layer comprises a transparent material.

5. The LED package of claim 4 wherein the electrically insulating layer comprises a transparent material.

6. The LED package of claim 1 wherein the electrically insulating layer comprises a thermally conductive layer.

7. The LED package of claim 1 further comprising an adhesive between the electrically conductive strips and the contact pads and the electrically insulating layer.

8. The LED package of claim 1 wherein a shape of each LED is selected from the group consisting of diamond, rectangular, rhomboidal, stretched hexagonal, and pronged shapes.

9. The LED package of claim 1 further comprising a protective layer overlying the LEDs and the electrically conductive strips.

10. The LED package of claim 9 wherein the protective layer includes at least one lens for focusing light emitted from the LEDS.

11. The LED package of claim 9 wherein the protective layer is a transparent or translucent material.

12. The LED package of claim 9 further comprising a second protective layer overlying the thermally conductive layer.

13. A flexible light emitting device (LED) package comprising:

a thermally conductive layer;

an electrically insulating layer having openings extending therethrough;

LEDs situated within the openings of the electrically insulating layer and including contact pads; and

electrically conductive strips attached by an adhesive to the contact pads and the electrically insulating layer, the LEDs being shaped such that the electrically conductive strips, when properly aligned, do not overlap active areas of the LEDs.

14. The LED package of claim 13 wherein the thermally conductive layer comprises a translucent material and the electrically insulting layer comprises a translucent material.

15. The LED package of claim 13 wherein the thermally conductive layer comprises a reflective material.

16. The LED package of claim 13 wherein the electrically insulating layer comprises a thermally conductive layer.

17. The LED package of claim 13 further comprising a protective layer overlying the LEDs and the electrically conductive strips, the protective layer including at least one lens for focussing light emitted from the LEDs.

18. A light source comprising:

a container, the container comprising a translucent or transparent material; and

a flexible light emitting device (LED) package comprising a thermally conductive layer, an electrically insulating layer having openings extending therethrough, LEDs situated within the openings of the electrically insulating layer and including contact pads, and electrically conductive strips attached to the contact pads and the electrically insulating layer, the flexible LED package being situated in the container such that the LEDs are adapted for emitting light outside the container.

19. The light source of claim 18 wherein the container comprises a tube.

20. The light source of claim 18 wherein the thermally conductive layer is a translucent, transparent, or reflective material.

21. The light source of claim 20 wherein the electrically insulating layer comprises a transparent material.

22. The LED package of claim 21 wherein the electrically insulating layer comprises a thermally conductive layer.

23. The LED package of claim 18 wherein a shape of each LED is selected from the group consisting of diamond, rectangular, rhomboidal, stretched hexagonal, and pronged shapes.