Multifunction luminous module with segmented OLED diode

Patent metadata

Field	Value
Publication number	US-9936562-B2
Application number	US-201514853187-A
Country	US
Kind code	B2
Filing date	Sep 14, 2015
Priority date	Sep 15, 2014
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

An organic light-emitting diode comprising a generally extensive first electrode; a generally extensive second electrode placed facing the first electrode, the second electrode comprising at least two portions that are electrically insulated from each other; at least one emissive organic layer placed between the first and second electrodes; and zones for electrically connecting the first and second electrodes. The zones for electrically connecting the first and second electrodes are located on at least one of the edges of the diode.

First claim

What is claimed is:

1. An organic light-emitting diode comprising:
a generally extensive first electrode;
a generally extensive second electrode placed facing said first electrode, said second electrode comprising at least two portions that are electrically insulated from each other;
at least one emissive organic layer placed between said first and second electrodes;
zones for electrically connecting said first and second electrodes; and
a plurality of edges;
wherein
said zones for electrically connecting said first and second electrodes are located on at least one of the edges of said organic light-emitting diode.

2. The organic light-emitting diode according to claim 1 , wherein said first electrode is electrically connected to said at least two separate connecting zones.

3. The organic light-emitting diode according to claim 1 , wherein at least one of said portions of said second electrode is electrically connected to said at least two separate connecting zones.

4. The organic light-emitting diode according to claim 1 , wherein at least one of said portions of said second electrode skirts around said other portion, or one of said other portions, from said edge or one of said edges comprising said electrically connecting zones.

5. The organic light-emitting diode according to claim 4 , wherein said portion, or each of said portions, of said second electrode that skirts around said other portion or one of said other portions from said edge comprising the electrically connecting zones is electrically connected to said two separate connecting zones that are placed on said edge on either side of said at least one connecting zone electrically connected to said other or one of said other portions that it skirts around.

6. The organic light-emitting diode according to claim 1 , wherein said first electrode and/or at least one of said portions of the said second electrode comprises an electrical conductor extending along said first electrode or electrode portion, said conductor being made of a material different from and more highly electrically conductive than the main material of said first electrode or electrode portion.

7. The organic light-emitting diode according to claim 6 , wherein said electrical conductor of said first electrode and/or of said portion or portions of said second electrode extends as far as said zone(s) of electrical contact of said first electrode or electrode portion(s).

8. The organic light-emitting diode according to claim 6 , wherein said electrical conductor of said first electrode and/or of said portion or portions of said second electrode extends along an outline of said first electrode or electrode portion(s).

9. The organic light-emitting diode according to claim 1 , wherein said first electrode is reflective and/or said second electrode is transparent.

10. The organic light-emitting diode according to claim 1 , wherein said electrically connecting zones are located exclusively in the extent of said organic light-emitting diode on one of its two main faces.

11. A luminous module, especially for an automotive vehicle, comprising:
a holder of one or more light sources; and
at least one areal organic light-emitting diode light source on said holder, able to emit a light beam oriented essentially along an optical axis of said module;
wherein
one or more areal light sources comprising an organic light-emitting diode according to claim 1 , the light beam being modulatable by selective activation of portions of said second electrode.

12. The luminous module according to claim 11 , wherein said one or more areal light sources extend transversely to said optical axis of said module.

13. The luminous module as claimed in claim 11 , wherein said light beam emitted by said one or more areal light sources is a first beam, said module comprising one or more additional light sources able to illuminate said one or more areal light sources and to form a second light beam by reflection from said one or more areal light sources.

14. The luminous module according to claim 13 , wherein it comprises a collimator able to deviate light rays emitted by said one or more additional light sources in a main direction, said deviated rays encountering said one or more areal light sources with a nonzero angle of incidence.

15. The luminous module according to claim 13 , wherein said first beam corresponds to an automotive vehicle position signaling function and/or said second beam corresponds to an automotive vehicle braking signaling function.

16. The organic light-emitting diode according to claim 2 , wherein at least one of said portions of said second electrode is electrically connected to said at least two separate connecting zones.

17. The organic light-emitting diode according to claim 2 , wherein at least one of said portions of said second electrode skirts around said other portion, or one of said other portions, from said edge or one of said edges comprising said electrically connecting zones.

18. The organic light-emitting diode according to claim 3 , wherein at least one of said portions of said second electrode skirts around said other portion, or one of said other portions, from said edge or one of said edges comprising said electrically connecting zones.

19. The luminous module as claimed in claim 12 , wherein said light beam emitted by said one or more areal light sources is a first beam, said module comprising one or more additional light sources able to illuminate said one or more areal light sources and to form a second light beam by reflection from said one or more areal light sources.

20. The organic light-emitting diode according to claim 7 , wherein said electrical conductor of said first electrode and/or of said portion or portions of said second electrode extends along an outline of said first electrode or electrode portion(s).

Assignees

• Valeo Vision

Inventors

• Jin Hui
• Dubosc Christophe
• Hue David

Classifications

• F21S43/195

  Details of lamp holders, terminals or connectors · CPC title

• F21S43/145

  Surface emitters, e.g. organic light emitting diodes [OLED] · CPC title

• H05B33/14 Primary

  characterised by the chemical or physical composition or the arrangement of the electroluminescent material {, or by the simultaneous addition of the electroluminescent material in or onto the light source} · CPC title

• F21S41/663

  by switching light sources (by switching incandescent light sources F21S41/162) · CPC title

• F21Y2115/15

  Organic light-emitting diodes [OLED] · CPC title