OPTOELECTRONIC COMPONENT DEVICE AND METHOD FOR OPERATING AN OPTOELECTRONIC COMPONENT

• US 20160219673A1
• Filed: 08/22/2014
• Published: 07/28/2016
• Est. Priority Date: 09/23/2013
• Status: Abandoned Application

• Current Assignee: OSRAM OLED GMBH (Ams-Osram AG)
• Original Assignee: OSRAM OLED GMBH (Ams-Osram AG)
• Inventors: Jaeger, Arndt
• Application Number:
  US15/023,704
• Publication Number:
  US 20160219673A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/60 Circuit arrangements for operating LEDs comprising organic material, e.g. for operating organic light-emitting diodes [OLED] or polymer light-emitting diodes [PLED]
• CPC Class Codes: H10K 59/32 Stacked devices having two or more layers, each emitting at different wavelengths
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

Various embodiments may relate to an optoelectronic component device, including an optoelectronic component and a control device for driving the optoelectronic component. The optoelectronic component includes a first optically active structure and a second optically active structure. The first optically active structure is designed for emitting a first electromagnetic radiation and ages in accordance with a first ageing function during operation. The second optically active structure is designed for emitting a second electromagnetic radiation and ages in accordance with a second ageing function during operation. The optoelectronic component is formed in such a way that at least the first electromagnetic radiation is emitted in a first operating mode and at least the second electromagnetic radiation is emitted in a second operating mode. The control device is designed so as to reduce the difference between first ageing function and second ageing function during the operation of the optoelectronic component device.

Claims

1. An optoelectronic component device, comprising:

an optoelectronic component and a control device for driving the optoelectronic component;

wherein the optoelectronic component comprises a first optically active structure and a second optically active structure,

wherein the first optically active structure is designed for emitting a first electromagnetic radiation and ages in accordance with a first ageing function during operation; and

wherein the second optically active structure is designed for emitting a second electromagnetic radiation and ages in accordance with a second ageing function during operation;

wherein the optoelectronic component is formed in such a way that at least the first electromagnetic radiation is emitted in a first operating mode and at least the second electromagnetic radiation is emitted in a second operating mode;

wherein the control device is designed so as to reduce the difference between first ageing function and second ageing function during the operation of the optoelectronic component device.

2. The optoelectronic component device according to claim 1,

wherein the optoelectronic component is formed in such a way that the first ageing function and the second ageing function have an approximately identical ageing coefficient.

3. The optoelectronic component device according to claim 1,

wherein the first optically active structure is formed in such a way that the first electromagnetic radiation is a blue light.

4. The optoelectronic component device according to claim 1,

wherein the control device is formed in such a way as to drive the first optically active structure in the first operating mode with a first voltage profile and to drive the second optically active structure in the second operating mode with a second voltage profile, which is different from the first voltage profile.

5. A method for operating an optoelectronic component,

wherein the optoelectronic component comprises a first optically active structure and a second optically active structure,

wherein the first optically active structure is designed for emitting a first electromagnetic radiation and ages in accordance with a first ageing function during operation;

and

wherein the second optically active structure is designed for emitting a second electromagnetic radiation and ages in accordance with a second ageing function during operation;

wherein the optoelectronic component is formed in such a way that at least the first electromagnetic radiation is emitted in a first operating mode and at least the second electromagnetic radiation is emitted in a second operating mode;

wherein the control device is designed so as to reduce the difference between first ageing function and second ageing function during the operation of the optoelectronic component device,

the method comprising;

driving the optoelectronic component in a predefined driving interval partly in the first operating mode and partly in the second operating mode in such a way as to reduce the difference between first ageing function and second ageing function during the operation of the optoelectronic component.

6. The method according to claim 5,

wherein the first optically active structure is formed in such a way that the first electromagnetic radiation is a blue light;

wherein the second optically active structure is formed in such a way that the second electromagnetic radiation is a yellow light or a green-red light; and

/or

wherein the optoelectronic component is driven in such a way that the mixture of first electromagnetic radiation and second electromagnetic radiation in a driving interval is a white light.

7. The method according to claim 5,

wherein at least one property of a third electromagnetic radiation is formed by means of the amplitude, the frequency and/or the duty ratio of an AC current and/or an AC voltage.

8. The method according to claim 7,

wherein the AC current has a DC current proportion, or the AC voltage has a DC voltage proportion.

9. The method according to claim 8,

wherein the AC current and/or the AC voltage have/has a frequency of greater than approximately 30 Hz.

10. The method according to claim 5,

wherein the first operating mode comprises driving the first optically active structure with a first voltage profile and the second operating mode comprises driving the second optically active structure with a second voltage profile, which is different from the first voltage profile.

11. The method according to claim 10,

wherein the first voltage profile comprises at least one non-linear first range.

12. The method according to claim 5,

wherein the difference in the ageing function is less than a threshold value.

13. The method according to claim 12,

wherein the threshold value is a function with respect to the differential colour locus ageing of the first optically active structure and of the second optically active structure.

14. The method according to claim 12,

wherein the threshold value has an absolute value such that the colour locus shift linked by means of the differential colour locus ageing is less than 0.02 in Cx and/or Cy in a CIE standard chromaticity diagram.