Light-emitting component

Patent metadata

Field	Value
Publication number	US-11757065-B2
Application number	US-202117487783-A
Country	US
Kind code	B2
Filing date	Sep 28, 2021
Priority date	Feb 13, 2015
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

A light-emitting component a first layer stack configured to generate light, at least one additional layer stack configured to generate light, where each of the first layer stack and the at least one additional layer stack are separately drivable from one another and where an auxiliary structure is arranged between the first layer stacks and the at least one additional layer stacks.

First claim

The invention claimed is:

1. A light-emitting device comprising:
a first layer stack configured to generate light;
at least one additional layer stack configured to generate light, wherein each of the first layer stack and the at least one additional layer stack are separately drivable from one another; and
an auxiliary structure arranged between the first layer stack and the at least one additional layer stack, wherein
the auxiliary structure is electrically insulating,
a first electrode is assigned to each of the first and the at least one additional layer stacks, each of the first electrodes makes electrical contact with its assigned layer stack,
the auxiliary structure is arranged between the first layer stack and the at least one additional layer stack along a lateral direction, wherein each of the at least one additional layer stack and the first layer stack is part of a segment of the light-emitting device, and at least two of the segments, of which each of the at least one additional layer stack and the first layer stack are a part, differ in a color of light produced in the respective segments.

2. The light-emitting device according to claim 1 , wherein at least one of the first electrodes is in direct contact with the auxiliary structure.

3. The light-emitting device according to claim 1 , wherein each of the first electrodes is in direct contact with the auxiliary structure.

4. The light-emitting device according to claim 1 , wherein each of the first electrodes comprises a transparent conductive oxide.

5. The light-emitting device according to claim 1 , wherein each of the first electrodes is arranged in direct contact with the associated layer stack on a surface of the associated layer stack.

6. The light-emitting device according to claim 1 , further comprising a second electrode assigned to the first and the at least one additional layer stacks, each of the second electrodes makes electrical contact with the associated layer stack.

7. The light-emitting device according to claim 1 , wherein the first layer stack and the at least one additional layer stack are configured to generate light independently from each other.

8. The light-emitting device according to claim 1 , wherein the first layer stack and the at least one additional layer stack are arranged on a common carrier.

9. The light-emitting device according to claim 1 , wherein the auxiliary structure fills a region in a lateral direction between the first layer stack and the at least one additional layer stack.

10. The light-emitting device according to claim 1 , wherein the auxiliary structure is reflective or light-scattering.

11. A light-emitting device comprising:
a first layer stack configured to generate light;
at least one additional layer stack configured to generate light, wherein each of the first layer stack and the at least one additional layer stack are separately drivable from one another; and
an auxiliary structure arranged between the first layer stack and the at least one additional layer stack, wherein
the auxiliary structure is electrically insulating,
a first electrode is assigned to each of the first and the at least one additional layer stacks, each of the first electrodes makes electrical contact with the associated layer stack,
the auxiliary structure is arranged between the first layer stack and the at least one additional layer stack along a lateral direction, wherein the first layer stack and the at least one additional layer stack comprise at least one different material.

12. The light-emitting device according to claim 1 , wherein the first layer stack and the at least one additional layer stack differ in thickness.

13. A light-emitting device comprising:
a first layer stack configured to generate light;
at least one additional layer stack configured to generate light, wherein each of the first layer stack and the at least one additional layer stack are separately drivable from one another; and
an auxiliary structure arranged between the first layer stack and the at least one additional layer stack, wherein
the auxiliary structure is electrically insulating,
a first electrode is assigned to each of the first and the at least one additional layer stacks, each of the first electrodes makes electrical contact with the associated layer stack,
the auxiliary structure is arranged between the first layer stack and the at least one additional layer stack along a lateral direction, wherein the auxiliary structure is in direct contact with the first layer stack and the at least one additional layer stack in a region along the lateral direction between the first layer stack and the at least one additional layer stack.

14. The light-emitting device according to claim 1 , wherein, during operation, a gap between the first layer stack and the at least one additional layer stack is not visible.

15. The light-emitting device according to claim 1 , wherein each of the first electrodes is congruent with the associated layer stack.

16. The light-emitting device according to claim 11 , wherein each of the at least one additional layer stack and the first layer stack is part of a segment of the light-emitting device.

17. The light-emitting device according to claim 16 , wherein at least two of the segments of which each of the at least one additional layer stack and the first layer stack are a part differ in a color of light produced in the respective segments.

18. The light-emitting device according to claim 1 , wherein at least two of the segments of which each of the at least one additional layer stack and the first layer stack are a part differ in their shape.

19. The light-emitting device according to claim 1 , wherein at least two of the segments of which each of the at least one additional layer stack and the first layer stack are a part differ in their lateral extent.

20. The light-emitting device according to claim 1 , wherein at least two of the segments of which each of the at least one additional layer stack and the first layer stack are a part differ in a brightness of light produced in the respective segments.

Assignees

• Osram Oled Gmbh

Inventors

• Riedel Daniel
• Rausch Andreas
• Niedermeier Ulrich

Classifications

• H10H20/835

  Reflective materials · CPC title

• H10K59/90 Primary

  Assemblies of multiple devices comprising at least one organic light-emitting element · CPC title

• H10H20/882

  Scattering means (H10H20/82 takes precedence) · CPC title

• H10H20/819

  characterised by their shape, e.g. curved or truncated substrates · CPC title

• H10K59/221

  Static displays, e.g. displaying permanent logos · CPC title