Led lamp with light-emitting junctions arranged in a three-dimensional array

• US 6,809,475 B2
• Filed: 02/14/2002
• Issued: 10/26/2004
• Est. Priority Date: 06/15/2000
• Status: Expired due to Term

• Current Assignee: Lednium Technology Pty Limited, Na Qi
• Original Assignee: Lednium Pty., Ltd.
• Inventors: Montagnat, John Albert, Jeganathan, Balu
• Primary Examiner(s): Patel, Ashok
• Assistant Examiner(s): COLON, GERMAN
• Application Number:
  US10/049,572
• Publication Number:
  US 20020145384A1
• Time in Patent Office: 985 Days
• Field of Search: 313/498-512, 257/79, 257/82, 257/88, 257/89, 438/106-112, 438/116
• US Class Current: 313/512
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48247 connecting the wire to a bond pad of the item
• 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 33/50 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
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A lamp including a plurality of semi-conductor light emitting junctions with a common layer of fluorescent material arranged thereover. The invention provides a lamp including a plurality of light emitting junctions mounted to at least one curved conductor so as to adopt a three-dimensional array.

Claims

1. A lamp including a plurality of light emitting junctions mounted to a plurality of curved conductors so as to adopt a three-dimensional array, at least one of the curved conductors comprising a curved conducting surface with recesses formed therein, wherein at least two recesses are formed in each of the plurality of curved conductors for receipt of respective ones of the junctions.

2. A lamp as claimed in claim 1, wherein at least one of the curved conductors is configured such that the junctions thereon are arranged substantially on an imaginary spheroid surface.

3. A lamp as claimed in claim 1, wherein at least one of the recesses has side walls which function as an optical guide for controlling at least one of the direction of light transmission and the angle of divergence.

4. A lamp as claimed in claim 1, further comprising a globe portion with the junctions and the curved conductors being embedded within the globe portion so that the lamp is formed as a unitary structure.

5. A lamp as claimed in claim 4, wherein the lamp includes a lens adapted to fit with the globe portion, and configured to shape the light emitted from the globe portion into a predetermined pattern.

6. A lamp as claimed in claim 5, wherein at least two adjacent junctions have a common layer of fluorescent material arranged thereover.

7. A lamp as claimed in claim 1, wherein the junctions are electrically connected between at least two of the curved conductors.

8. A lamp as claimed in claim 7, wherein the junctions are grouped so as to form groups of junctions electrically connected in series.

9. A lamp including a plurality of light emitting junctions mounted to a plurality of curved conductors so as to adopt a three-dimensional array, wherein the curved conductors have a curved conducting surface, and at least two recesses are formed in each of the plurality of curved conductors for receipt of the junctions mounted to the curved conducting surface.

10. A lamp as claimed in claim 9, wherein at least one of the curved conductors is configured such that the junctions thereon are arranged substantially on an imaginary spheroid surface.

11. A lamp as claimed in claim 9, wherein at least one of the recesses has side walls which function as an optical guide for controlling at least one of the direction of light transmission and the angle of divergence.

12. A lamp as claimed in claim 9, further comprising a globe portion with the junctions and the curved conductors being embedded within the globe portion so that the lamp is formed as a unitary structure.

13. A lamp as claimed in claim 12, wherein the lamp includes a lens adapted to fit with the globe portion, and configured to shape the light emitted from the globe portion into a predetermined pattern.

14. A lamp as claimed in claim 13, wherein at least two adjacent junctions have a common layer of fluorescent material arranged thereove.

15. A lamp as claimed in claim 9, wherein the junctions are electrically connected between at least two of the curved conductors.

16. A lamp as claimed in claim 15, wherein the junctions are grouped so as to form groups of junctions electrically connected in series.