Multi-LED components

Patent metadata

Field	Value
Publication number	US-9980341-B2
Application number	US-201715710180-A
Country	US
Kind code	B2
Filing date	Sep 20, 2017
Priority date	Sep 22, 2016
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A multi-LED component comprises a component substrate comprising a common electrode, a first electrode, a second electrode, a plurality of first LEDs, and a plurality of second LEDs all disposed on the component substrate. Each first LED and each second LED comprises first and second LED contacts for providing power to each corresponding LED to cause the LED to emit light. The first LED contact of each first LED and each second LED is electrically connected to the common electrode. The second LED contacts of the first LEDs are electrically connected to the first electrode. The second LED contacts of the second LEDs are electrically connected to the second electrode so that the first LEDs are electrically connected in parallel and the second LEDs are electrically connected in parallel.

First claim

What is claimed:

1. A multi-LED component, comprising:
a component substrate having a first side and a second side, wherein the first side is opposite the second side;
a common electrode, a first electrode, and a second electrode disposed on, in, or over the first side of the component substrate; and
a plurality of first LEDs and a plurality of second LEDs both disposed on, in, or over the first side of the component substrate, each first LED comprising a first LED contact and a second LED contact and each second LED comprising a first LED contact and a second LED contact, wherein the first LED contact and second LED contact of each of the plurality of first LEDs and the plurality of second LEDs are for providing power to the corresponding LED to cause the corresponding LED to emit light, wherein:
the first LED contact of each first LED and the first LED contact of each second LED is at least indirectly electrically connected to the common electrode,
the second LED contact of each first LED is at least indirectly electrically connected to the first electrode,
the second LED contact of each second LED is at least indirectly electrically connected to the second electrode, and
the first LEDs of the plurality of first LEDs are electrically connected in parallel and the second LEDs of the plurality of second LEDs are electrically connected in parallel.

2. The multi-LED component of claim 1 , wherein at least one of the plurality of first LEDs is disposed between two or more of the plurality of second LEDs.

3. The multi-LED component of claim 1 , wherein the plurality of first LEDs emit light of a first color and the plurality of second LEDs emit light of a second color different from the first color.

4. The multi-LED component of claim 1 , comprising a system substrate with a circuit that is electrically connected to the common electrode, the first electrode, and the second electrode.

5. The multi-LED component of claim 4 , comprising a common bond pad, a first bond pad, and a second bond pad electrically connected to the common electrode, the first electrode, and the second electrode, respectively, wherein each bond pad is disposed on the system substrate or the component substrate.

6. The multi-LED component of claim 1 , wherein the plurality of first LEDs and the plurality of second LEDs are micro-transfer printed LEDs that each comprise a broken tether.

7. The multi-LED component of claim 1 , comprising common, first, and second connection posts electrically connected to the common, first, and second electrodes, respectively.

8. The multi-LED component of claim 4 , wherein the component substrate is located between the system substrate and the plurality of first LEDs.

9. The multi-LED component of claim 4 , wherein the plurality of first LEDs are located between the system substrate and the component substrate.

10. The multi-LED component of claim 1 , comprising a third electrode formed on or over the component substrate and a third plurality of third LEDs disposed on, in, or over the first side of the component substrate, each third LED comprising a first LED contact and a second LED contact for providing power to the third LED to cause the third LED to emit light, wherein
the first LED contact of each third LED is at least indirectly electrically connected to the common electrode, and
the second LED contact of each third LED is at least indirectly electrically connected to the third electrode.

11. The multi-LED component of claim 10 , wherein at least one of the plurality of third LEDs is disposed closer to a first LED of the plurality of first LEDs and closer to a second LED of the plurality of second LEDs than to another third LED of the plurality of third LEDs.

12. The multi-LED component of claim 1 , comprising a first connection pad for electrically connecting to the first electrode and a second connection pad for electrically connecting to the second electrode and at least one fuse electrically connected in series between at least one of (i) the first electrode and the first connection pad and (ii) the second electrode and the second connection pad.

13. The multi-LED component of claim 12 , comprising a fuse electrically connected in series with an LED and wherein the fuse is electrically non-conductive.

14. The multi-LED component of claim 1 , comprising a common connection pad for electrically connecting to the common electrode and a fuse electrically connected in series between the common electrode and the common connection pad.

15. The multi-LED component of claim 1 , wherein the plurality of first LEDs emit light of a first color, the plurality of second LEDs emit light of a second color different from the first color, and the plurality of third LEDs emit light of a third color different from the first color and different from the second color; and
wherein the number of first LEDs in the plurality of first LEDs is different from the number of second LEDs in the plurality of second LEDs, the number of first LEDs in the plurality of first LEDs is different from the number of third LEDs in the plurality of third LEDs, or the number of second LEDs in the plurality of second LEDs is different from the number of third LEDs in the plurality of third LEDs.

16. The multi-LED component of claim 1 , comprising a fuse electrically connected in series between at least one of (i) the second LED contact of each first LED of the plurality of first LEDs and the first electrode and (ii) the second LED contact of each second LED of the plurality second LEDs and the second electrode.

17. The multi-LED component of claim 1 , comprising one or more photo-sensors sensitive to the light emitted by at least one of the plurality of first LEDs and the plurality of second LEDs, disposed on the second side of the component substrate, wherein the one or more photo-sensors optionally comprise at least one of one or more color filters and an infrared blocking filter.

18. The multi-LED component of claim 1 , comprising one or more photo-sensors sensitive to the light emitted by at least one of the plurality of first LEDs and the plurality of second LEDs, disposed on the first side, wherein the one or more photo-sensors optionally comprise at least one of one or more color filters and an infrared blocking filter.

19. The multi-LED component of claim 1 , comprising a fuse electrically connected in series between the first LED contact of each first LED of the plurality of first LEDs and the common electrode.

20. A method of using a multi-LED component, comprising:
providing a multi-LED component, the multi-LED component comprising
a component substrate having a first side and a second side, wherein the first side is opposite the second side,
a common electrode, a first electrode, and a second electrode disposed on, in, or over the first side of the component substrate,
a plurality of first LEDs and a plurality of second LEDs both disposed on, in, or over the first side of the component substrate, each first LED comprising a first LED contact and a second LED contact and each second LED comprising a first LED contact and a second LED contact, wherein the first LED contact and second LED contact of each of the plurality of first LEDs and the plurality of second LEDs are for providing power to the corresponding LED to cause the corresponding LED to emit light, and
a fuse electrically connected in series with an LED, wherein:
the first LED contact of each first LED and the first LED contact of each second LED is at least indirectly electric

Assignees

• X Celeprint Ltd

Inventors

• Bower Christopher
• Trindade António José Marques
• Cok Ronald S

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H05B45/46

  having LEDs disposed in parallel lines · CPC title

• H05B47/11

  by determining the brightness or colour temperature of ambient light · CPC title

• H05K1/0293

  Individual printed conductors which are adapted for modification, e.g. fusable or breakable conductors, printed switches · CPC title

• H05K3/225

  Correcting or repairing of printed circuits (H05K1/0292, H05K3/222, H05K3/288, H05K3/4685 take precedence) · CPC title