Light emitting diode display having heat sinking circuit rails

• US 6,652,123 B2
• Filed: 05/07/2001
• Issued: 11/25/2003
• Est. Priority Date: 05/07/2001
• Status: Expired due to Term

• Current Assignee: Illumafinity, LLC (Ascend Innovation Management, LLC)
• Original Assignee: Jiahn-Chang Wu
• Inventors: Wu, Jiahn-Chang
• Primary Examiner(s): Cariaso, Alan
• Assistant Examiner(s): Negron, Ismael
• Application Number:
  US09/848,993
• Publication Number:
  US 20020167807A1
• Time in Patent Office: 932 Days
• Field of Search: 362/241, 362/252, 362/227, 362/235, 362/237, 362/240, 362/249, 362/800, 200/46
• US Class Current: 362/241
• CPC Class Codes: H01L 2224/48091 Arched
• 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 2924/01039 Yttrium [Y]
• CPC Class Codes: H01L 2924/12041 LED
• 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

An LED display panel are mounted with an array of LEDs on a number of metallic partitions, serving as common electrodes foil a line of LEDs as well as heat sinks. Another number of rails serve as common electrodes for another line of LEDs. The metallic partitions and the rails are orthogonal to and insulated from one another at their cross-points.

Claims

1. A light emitting diode (LED) display package, comprising:

a plurality of parallel conducting partitions;

a plurality of parallel conducting rails;

a plurality of LEDs mounted on said plurality of parallel partitions serving as common first electrodes for a group of said LEDs mounted on the same partition of said partition and heat sink; and

said plurality of parallel conducting rails connected to the second electrodes of said LEDs serving as a common electrode for a second group of LEDs lined up along said rails,

wherein said partitions are grooved and aligned, and said rails are orthogonal to said partitions and anchored in the grooves of said partitions.

2. The LED display package as described in claim 1, wherein said rails are grooved so that the grooves of said rails are locked with the groves of said partitions.

3. The LED display package as described in claim 1, wherein said bottoms of said grooves are lined with insulators.

4. The LED display package as described in claim 1, wherein the sides of said grooves are lined with insulators.

5. The LED display package as described in claim 1, wherein said partitions are mounted orthogonally over and insulated from said rails.

6. The LED display package as described in claim 1, wherein said partitions are placed in parallel, interleaved and insulated with said rails.

7. The LED display package as described in claim 1, wherein said LEDs are recessed in a cup in said partitions for focusing the light emitted from the LEDs.