Illumination – Light source and modifier – Laser type
Reexamination Certificate
2001-05-07
2003-11-25
Cariaso, Alan (Department: 2875)
Illumination
Light source and modifier
Laser type
C362S241000
Reexamination Certificate
active
06652123
ABSTRACT:
BACKGROUND OF THE INVENTION
(1) Field of the Invention
The invention relates to light emitting diode (LED) package, particularly to a heat sinking package for a LED display panel.
(2) Brief Description of Related Art
FIG. 1
shows the top view of a prior art LED unit
100
of a display panel. A LED
10
is mounted on a first metal extension
11
of the bottom electrode of the LED
10
. The top electrode (i.e. the second electrode) of the LED
10
is wire-bonded by wire
13
to the a second metal extension
12
. The LED
10
and the metal extensions
11
and
12
are mounted on an insulating substrate
15
. The extensions
11
and
12
are wrapped around the sides
151
and
152
respectively of the insulating substrate
15
to the backside as shown in
FIG. 2
to serve as surface contacts (not shown) on a motherboard
18
.
As the light intensity demand increases, the prior art LED panel encounters the problem of heat dissipation. The need for heat sinking becomes imminent.
SUMMARY OF THE INVENTION
An object of this invention is to devise a package capable of heating sinking the heat generated in a high light intensity for LED display panels. Another object of this invention is to activate a LED display by means of X-Y addressing.
These objects are achieved by mounting a number of LEDs on a metallic partition serving as a common first electrode for a line of LEDs and heat sink Another number of rails serve as common second electrode for another line of LEDs.
REFERENCES:
patent: 3560675 (1971-02-01), Krakinowski
patent: 3584162 (1971-06-01), Krakinowski
patent: 3617666 (1971-11-01), Braue
patent: 4017848 (1977-04-01), Tannas, Jr.
patent: 4254453 (1981-03-01), Mouyard et al.
patent: 4729076 (1988-03-01), Masami et al.
patent: 5093768 (1992-03-01), Ohe
patent: 5226723 (1993-07-01), Chen
patent: 5752766 (1998-05-01), Bailey et al.
patent: 5793343 (1998-08-01), Hart et al.
patent: 5857767 (1999-01-01), Hochstein
patent: 6045240 (2000-04-01), Hochstein
Cariaso Alan
Lin H. C.
Negron Ismael
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