Light emitting diode display having heat sinking circuit rails

DETAILED DESCRIPTION OF THE INVENTION FIG.
3 shows a first embodiment of the present invention.
A number corrugated metallic partitions 21 are lined up in parallel.
The grooves 25 of the partitions 21 are aligned in a direction perpendicular to the partitions.
Another set of metallic rails 22 orthogonal to the metallic partitions 21 are anchored in the grooves 25 of the partitions 21.
On each pedestal of the corrugated partition 21 is mounted a LED 20.
The bottom electrode of the LED 20 is in contact with the pedestal and the top electrode of the LED 20 is wire bonded by wire 23 to the metallic rail 22.
Since the partitions 21 are made of conductors serving as heat sinks, the heat generated in LEDs 20 are conducted away.
FIG.
4 shows another embodiment of the LED package.
The partitions 31 correspond to the partitions 21 in FIG.
3; the grooves 351 correspond to 25; and LEDs 30 correspond to LED 20, all serving the same functions.
However, the metallic rails 33 in FIG.
4 are different from the rails 22 in FIG.
3.
The runners or metallic rails 33 are corrugated in the bottom, such that the grooves of the runners 33 lock in the grooves 351 of the metal partitions 31.
With such a structure, the metallic rails 33 are locked in position with respect to the metal partitions 31.
Similar to FIG.
3, the LEDs 30 are mounted on the pedestals of the metal partitions 31, and the top electrodes of the LEDs are wire-bonded by wires 33 to the rails 32.
The metal partitions 31 serve as heat sinks for the LEDs 30.
To prevent short circuit between the partitions 21 and rails 23 in FIG.
3 or between the partitions 31 and rails 33 in FIG.
4, the grooves of the partitions are coated with insulating material 361 at the bottom as shown in FIG.
5 or at all sides 362 as shown in FIG.
6.
FIG.
7 shows a third embodiment of the present invention.
Unlike the corrugated partitions in FIG.
3 or FIG.
4, the metallic partitions 41 are resting on the rails 42.
The LEDs 40 are mounted on the metallic partitions 41, which in turn rest on the orthogonal rails 42