Multi-COB-LED lighting module
A multi-COB-LED lighting module includes a submount; and a plurality of clusters of LED-chips that emit light radiation in respective emission bands, wherein each LED-chip cluster includes a plurality of LED-chips arranged on the submount by chip on board technology and emit light radiation in a respective emission band, and at least two LED-chips of at least a first LED-chip cluster each borders with a plurality of LED-chips belonging to one or more clusters of LED-chips different from the first LED-chip cluster and connect one to the other by at least a wire bond that extends above one or more of the adjoining LED-chips.
1. A multi-COB-LED lighting module comprising:
a submount; and
a plurality of clusters of LED-chips that emit light radiation in respective emission bands, wherein
each LED-chip cluster comprises a plurality of LED-chips arranged on said submount by chip on board technology and emit light radiation in a respective emission band, and
at least two LED-chips of at least a first LED-chip cluster each borders with a plurality of LED-chips belonging to one or more clusters of LED-chips different from said first LED-chip cluster and connect one to the other by at least a wire bond that extends above one or more of said adjoining LED-chips.
2. The lighting module according to claim 1 , wherein said LED-chips are arranged on said submount in positions adjacent one to the other to approximately form an LED-chip matrix and each comprises one or more top connection terminals and at least one bottom connection terminal, and
at least one top terminal of a first of said two LED-chips of said first LED-chip cluster connects to a bottom terminal of a second LED-chip of said first LED-chip cluster by a wire bond that extends above one or more of said adjoining LED-chips.
3. The lighting module according to claim 2 , wherein said top terminal is arranged on the top surface of the LED-chip and said bottom terminal protrudes from a side of the LED-chip.
4. The lighting module according to claim 2 , wherein at least a terminal of said top/bottom terminal of an LED-chip is adjacent to a bottom/top terminal of another LED-chip.
5. The lighting module according to claim 1 , wherein said clusters of LED-chips comprise five or more of:
a) an LED-chip cluster comprising a plurality of direct emission blue LED-chips, or
b) an LED-chip cluster comprising a plurality of direct emission cyan LED-chips, or
c) an LED-chip cluster comprising a plurality of direct emission green LED-chips, or
d) an LED-chip cluster comprising a plurality of direct emission red LED-chips, or
e) an LED-chip cluster comprising a plurality of phosphor-converted amber LED-chips, or
f) an LED-chip cluster comprising a plurality of phosphor-converted lime LED-chips, or
g) an LED-chip cluster comprising a plurality of direct emission aquamarine LED-chips, or
h) an LED-chip cluster comprising a plurality of direct emission or phosphor-converted deep red LED-chips, or
i) an LED-chip cluster comprising a plurality of direct emission or phosphor-converted deep blue LED-chips, or
l) an LED-chip cluster comprising a plurality of warm white LED-chips, or
m) an LED-chip cluster comprising a plurality of cold white LED-chips, or
n) an LED-chip cluster comprising a plurality of UV-A LED-chips, or
o) an LED-chip cluster comprising a plurality of UV-B LED-chips, or
p) an LED-chip cluster comprising a plurality of UV-C LED-chips, or
q) an LED-chip cluster comprising a plurality of IR LED-chips.
6. The lighting module according to claim 1 , wherein said at least first LED-chip cluster comprises one of:
a) an LED-chip cluster comprising a plurality of direct emission blue LED-chips, or
b) an LED-chip cluster comprising a plurality of direct emission cyan LED-chips, or
c) an LED-chip cluster comprising a plurality of direct emission green LED-chips, or
d) an LED-chip cluster comprising a plurality of direct emission red LED-chips, or
h) an LED-chip cluster comprising a plurality of direct emission or phosphor-converted deep red LED-chips, or
i) an LED-chip cluster comprising a plurality of direct emission or phosphor-converted deep blue LED-chips, or
l) an LED-chip cluster comprising a plurality of warm white LED-chips, or
m) an LED-chip cluster comprising a plurality of cold white LED-chips, or
n) an LED-chip cluster comprising a plurality of UV-A LED-chips, or
o) an LED-chip cluster comprising a plurality of UV-B LED-chips, or
p) an LED-chip cluster comprising a plurality of UV-C LED-chips, or
q) an LED-chip cluster comprising a plurality of IR LED-chips.
7. The lighting module according claim 1 , wherein the LED-chips belonging to a same LED-chip cluster electrically connect one to the other by said wire bonds according to a series/parallel configuration.
8. The lighting module according to claim 1 , comprising about eighty to about ninety of said LED-chips.
9. The lighting module according to claim 1 , wherein said LED-chips are quadrangular, square, hexagonal or rhomboidal shaped.
10. The lighting module according to claim 1 , wherein said LED-chips have dimensions of about 1.43 mm×1.43 mm (45×45 mils).