Organic light-emitting diode, connector and luminaire

• US 8,981,416 B2
• Filed: 12/03/2012
• Issued: 03/17/2015
• Est. Priority Date: 01/02/2012
• Status: Active Grant

• Current Assignee: Pictiva Displays International Limited (f/k/a Dolya Holdco 5 Limited) (Key Patent Innovations Limited)
• Original Assignee: Osram Opto Semiconductors GmbH (Ams-Osram AG)
• Inventors: Schicktanz, Simon
• Primary Examiner(s): Nguyen, Dao H
• Application Number:
  US14/370,145
• Publication Number:
  US 20140367666A1
• Time in Patent Office: 834 Days
• Field of Search: 257/40, 257/79, 257/98, 257/99, 257/676, 257/E33.056, 257/E33.057, 257/E33.063, 257/E33.064, 315/118, 362/133, 362/231, 362/235
• US Class Current: 257/98
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2115/15 Organic light-emitting diodes [OLED]
• CPC Class Codes: H01L 2224/4826 Connecting between the body and an opposite side of the item with respect to the body
• CPC Class Codes: H01L 2224/484 Connecting portions
• CPC Class Codes: H01L 2224/49 of a plurality of wire connectors
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/12044 OLED
• 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
• CPC Class Codes: H10K 50/805 Electrodes
• CPC Class Codes: H10K 50/856 comprising reflective means
• CPC Class Codes: H10K 59/82 Interconnections, e.g. terminals H10K59/131, H10K59/179 take precedence
• CPC Class Codes: H10K 59/878 comprising reflective means

Abstract

An organic light-emitting diode has a carrier substrate. The light-emitting diode also contains an active layer that generates and emits electromagnetic radiation at a carrier front face. The active layer is mounted on the carrier substrate. At least one contacting device is located on a carrier rear face and is arranged simultaneously for electrical contacting and for mechanical attachment of the light-emitting diode. The contacting device includes a contact region. The contact region and/or the contacting device, seen in a side view parallel to the carrier rear face, are elevated in a U-shape or L-shape above the carrier rear face and/or extend in a lateral direction away from the active layer.

Claims

1. A luminaire comprising at least one organic light-emitting diode and a plurality of connectors, wherein the organic light-emitting diode comprises:

a carrier substrate having a carrier front face and a carrier rear face,

at least one active layer that generates electromagnetic radiation and emits the radiation at the carrier front face, the active layer being mounted on the carrier substrate,

a reflective layer located on a side of the active layer remote from the carrier substrate,

at least one contacting device on the carrier rear face that electrically contacts and simultaneously mechanically attaches the organic light-emitting diode, the contacting device comprising a contact region and, seen in a side view parallel to the carrier rear face, is elevated in a U-shape or L-shape above the carrier rear face and/or extends in a lateral direction away from the active layer;

wherein the connector comprises;

at least one clamping device that clamps the contact region of the contacting device of the organic light-emitting diode, and

at least one cable connection region that mounts an electrically conductive cable on the connector;

wherein;

the light-emitting diode is electrically contacted and mechanically attached only by the connectors,

the connectors are not visible in plan view onto the carrier front face,

the contacting device, seen in plan view onto the carrier front face, is entirely covered by the carrier substrate and is not visible from the carrier front face, and

the contacting device, at least in some locations seen from the carrier rear face, covers the active layer so that the active layer is located in some locations between the contacting device and the carrier substrate.

2. The luminaire according to claim 1, wherein the contacting device and/or the contact region is formed mirror-symmetrically with respect to a plane perpendicular to the carrier rear face and, seen in plan view onto the carrier front face, is located next to the active layer.

3. The luminaire according to claim 1, wherein an intermediate space is located between the contact region and the carrier rear face, which intermediate space is freely accessible from a nearest carrier end face of the carrier substrate.

4. The luminaire according to claim 1, wherein the contacting device is made from a metal strip or from a printed circuit board and the contact region is formed by bending the metal strip or the printed circuit board.

5. The luminaire according to claim 1, wherein the connectors are all of identical construction and are differently spatially oriented and aligned with respect to one another.

6. The luminaire according to claim 1, wherein the contacting device has just one electrical contact pole.

7. The luminaire according to claim 1, wherein a length of the contacting device is 10 mm to 300 mm, a width of the contacting device is 2 mm to 35 mm, the contacting device has a height of 0.5 mm to 10 mm, and a thickness of a material from which the contacting device is made is 0.2 mm to 2 mm.

8. The luminaire according to claim 1, which contains one of the following numbers of contacting devices:

1, 2, 3, 4, 5, 6, 8, 10.

9. The luminaire according to claim 1, wherein the clamping device is plugged onto the contact region of the contacting device,

a receiving direction of the cable connection region for the cable is oriented transversely with respect to a plug-in direction of the clamping device, and

the connector is a one-piece metal part.

10. The luminaire according to claim 1, wherein the clamping device has a fork-like shape and has at least three prongs, and

the prongs are arranged to touch the contact region of the clamping device on at least two mutually opposite sides.

11. The luminaire according to claim 1, wherein the clamping device is mounted to be tiltable and/or displaceable relative to the cable connection region, and

the clamping device and the cable connection region are of one-piece construction.

12. A luminaire comprising at least one organic light-emitting diode and a plurality of connectors, wherein the organic light-emitting diode comprises:

a carrier substrate having a carrier front face and having a carrier rear face,

at least one active layer that generates electromagnetic radiation and emits the radiation at the carrier front face, the active layer being mounted on the carrier substrate,

at least one contacting device on the carrier rear face that electrically contacts and simultaneously mechanically attaches the organic light-emitting diode, the contacting device comprising a contact region and, seen in a side view parallel to the carrier rear face, is elevated in a U-shape or L-shape above the carrier rear face and/or extends in a lateral direction away from the active layer;

wherein the connector comprises;

at least one clamping device that clamps the contact region of the contacting device of the organic light-emitting diode, and

at least one cable connection region that mounts an electrically conductive cable on the connector;

wherein the light-emitting diode is electrically contacted and mechanically attached by the connectors.