Organic light-emitting diode having a plurality of light-emitting segments
View Patent ↗An organic light-emitting diode is disclosed. In an embodiment, the diode includes a first light-emitting segment and at least a second light-emitting segment, wherein the first and second light-emitting segments include a common first electrode and a common second electrode, and are configured to emit radiation with different brightnesses, wherein the first electrode includes at least one separating line that does not completely cut through the first electrode, wherein an electric conductivity of the first electrode is reduced in a region of the separating line, wherein the separating line separates the first light-emitting segment from the second light-emitting segment, and wherein the second light-emitting segment has a lower brightness during operation than the first light-emitting segment.
1. An organic light-emitting diode comprising:
a first light-emitting segment; and
at least a second light-emitting segment,
wherein the first and second light-emitting segments comprise a common first electrode and a common second electrode, and are configured to emit radiation with different brightnesses,
wherein the first electrode comprises at least one separating line,
wherein the at least one separating line comprises a line-shaped depression in the first electrode, or a line-shaped arrangement of cut-outs in the first electrode,
wherein an electric conductivity of the first electrode is reduced in a region of the at least one separating line,
wherein the at least one separating line separates the first light-emitting segment from the second light-emitting segment,
wherein the second light-emitting segment has a lower brightness during operation than the first light-emitting segment, and
wherein, external to the at least one separating line, a thickness of the first electrode does not differ in the first light emitting segment and the second light emitting segment.
2. The organic light-emitting diode according to claim 1 , wherein each of the first and second electrodes has a single connection contact for connecting the organic light-emitting diode to a current or voltage source.
3. The organic light-emitting diode according to claim 1 , wherein an electric connection contact of the first electrode adjoins the first light-emitting segment.
4. The organic light-emitting diode according to claim 1 , wherein the at least one separating line entirely encircles the second light-emitting segment.
5. The organic light-emitting diode according to claim 1 , wherein the first electrode comprises at least one further separating line in the second light-emitting segment, the at least one further separating line separating a third light-emitting segment from the second light-emitting segment, wherein the third light-emitting segment has a lower brightness during the operation than the second light-emitting segment.
6. The organic light-emitting diode according to claim 5 , wherein the at least one further separating line entirely encircles the third light-emitting segment.
7. The organic light-emitting diode according to claim 5 , wherein the at least one further separating line is produced by laser ablation or by an etching process.
8. The organic light-emitting diode according to claim 1 , wherein the first electrode is arranged on a substrate of the organic light-emitting diode, and an organic layer stack comprising a light-emitting active layer is arranged on the first electrode.
9. The organic light-emitting diode according to claim 1 , wherein the at least one separating line is covered with an electrically insulating layer.
10. The organic light-emitting diode according to claim 1 , wherein at least one of the first and second light-emitting segments forms a graphic element.
11. The organic light-emitting diode according to claim 10 , wherein the graphic element is an image, a symbol or a character.
12. The organic light-emitting diode according to claim 1 , wherein the at least one separating line has a width between 25 μm and 100 μm.
13. The organic light-emitting diode according to claim 1 , wherein the at least one separating line is produced by laser ablation or by an etching process.
14. The organic light-emitting diode according to claim 1 , wherein the first electrode is a transparent electrode.
15. An organic light-emitting diode comprising:
a first light-emitting segment; and
at least a second light-emitting segment, wherein the first and second light-emitting segments comprise a common first electrode and a common second electrode, and are configured to emit radiation with different brightnesses,
wherein the first electrode comprises at least one separating line,
wherein the at least one separating line comprises a line-shaped depression in the first electrode, or a line-shaped arrangement of cut-outs in the first electrode,
wherein an electric conductivity of the first electrode is reduced in a region of the at least one separating line,
wherein the at least one separating line separates the first light-emitting segment from the second light-emitting segment,
wherein the second light-emitting segment has a lower brightness during operation than the first light-emitting segment,
wherein the at least one separating line entirely encircles the second light-emitting segment, and
wherein, external to the at least one separating line, a thickness of the first electrode does not differ in the first light emitting segment and the second light emitting segment.