Method for Operating an Organic Optoelectronic Component

• US 20160300887A1
• Filed: 06/16/2016
• Published: 10/13/2016
• Est. Priority Date: 01/25/2013
• Status: Active Grant

• Current Assignee: Pictiva Displays International Limited (f/k/a Dolya Holdco 5 Limited) (Key Patent Innovations Limited)
• Original Assignee: OSRAM OLED GMBH (Ams-Osram AG)
• Inventors: Popp, Michael, Philippens, Marc
• Granted Patent: US 9,721,993 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H03K 2017/9634 using organic light emitting devices, e.g. light emitting polymer [OEP] or OLED
• 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: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: H10K 50/86 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 65/00 Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element and at least one organic radiation-sensitive element, e.g. organic opto-couplers organic image sensors integrated with organic light-emitting devices H10K39/34; OLED displays integrated with photosensors H10K59/13
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A method is specified for operating an organic optoelectronic component, which has at least one organic light-emitting element having an organic functional layer stack with at least one organic light-emitting layer between two electrodes and at least one organic light-emitting element having an organic light-detecting layer. These elements are arranged on a common substrate in laterally adjacent area regions. The at least one organic light-detecting element detects ambient light, which is incident onto the organic optoelectronic component. The intensity of the light emitted by the at least one organic light-emitting element is regulated depending on a signal of the at least one organic light-detecting element with a characteristic signal form.

Claims

1. A method for operating an organic optoelectronic component that comprises an organic light emitting element having an organic functional layer stack having an organic light emitting layer between two electrodes and an organic light detecting element having an organic light detecting layer, the organic light emitting element and organic light detecting element being arranged on a common substrate in laterally adjacent area regions, the method comprising:

detecting, by the organic light detecting element, ambient light incident on the organic optoelectronic component; and

regulating an intensity of light emitted by the organic light emitting element based on a signal of the organic light detecting element with a characteristic signal waveform;

wherein the organic light detecting element and the organic light emitting element have a substantially identical construction; and

wherein the organic light detecting element and the organic light emitting element are located in a common plane which is oriented perpendicularly to a stacking direction of the electrodes and of the organic functional layer stack of the organic light emitting element.

2. The method according to claim 1, wherein an area covered on the common substrate by organic light detecting elements is at most ten percent of an area covered on the common substrate by organic light emitting elements, and wherein the organic light emitting element has an area of greater than or equal to one square centimeter.

3. The method according to claim 1, wherein the signal with the characteristic signal waveform is generated by an external object swiping past the organic light detecting element.

4. The method according to claim 3, wherein the external object does not touch the light detecting element and has a distance of at least 1 cm and at most 1 m to the light detecting element.

5. The method according to claim 1, wherein the characteristic signal waveform is a negative peak.

6. The method according to claim 1, wherein the signal with the characteristic signal waveform is generated by the organic light detecting element being at least partly covered with an external object.

7. The method according to claim 1, wherein the intensity of the light emitted by the organic light emitting element is regulated when the signal falls below a chosen limit value.

8. The method according to claim 1, wherein a plurality of organic light detecting elements is arranged on the common substrate.

9. The method according to claim 8, wherein the intensity of the light emitted by the organic light emitting element is regulated depending on a temporal succession of at least two signals from at least two organic light detecting elements with a respective characteristic signal waveform.

10. The method according to claim 9, wherein the characteristic signal waveform of each of the at least two signals is a negative peak, and the negative peaks take place temporally successively.

11. The method according to claim 10, wherein the negative peaks are generated by an external object swiping past the at least two organic light detecting elements.

12. The method according to claim 9, wherein the at least two organic light detecting elements are organic light detecting elements adjacent to one another.

13. The method according to claim 9, wherein a first signal is generated by one of the plurality of organic light detecting elements being at least partly covered with an external object, and a second signal is generated by another of the plurality of organic light detecting elements being covered with an external object.

14. The method according to claim 9, wherein a first signal is generated by one of the plurality of organic light detecting elements being covered with an external object, and a second signal is generated by an external object swiping past another of the plurality of organic light detecting elements.

15. The method according to claim 1, wherein the organic light detecting element also detects light that is emitted by the organic light emitting element and that is guided internally in the organic optoelectronic component to the organic light detecting element.

16. The method according to claim 1, wherein the intensity of the light emitted by a plurality of organic light emitting elements is regulated depending on a signal from at least one organic light detecting element with a characteristic signal waveform.

17. The method according to claim 16, wherein, for regulating a plurality of organic light emitting elements, an organic light detecting element is assigned to each organic light emitting element.

18. The method according to claim 1, wherein the organic light detecting element is embodied as an organic photodiode or as an organic photoconductor, and the signal is a photovoltage or a photocurrent.

19. A method for operating an organic optoelectronic component that comprises an organic light emitting element that emits visible light at an intensity during operation and an organic light detecting element having an organic light detecting layer, the method comprising:

detecting ambient light incident on the organic optoelectronic component by the organic light detecting element; and

regulating the intensity of the light emitted by the organic light emitting element based on a signal from the organic light detecting element with a characteristic signal waveform,

wherein the organic light emitting element has an organic functional layer stack with an organic light emitting layer between two electrodes,

wherein the organic light emitting element and the organic light detecting element are arranged on a common substrate in laterally adjacent area regions,

wherein an area covered on the common substrate by organic light detecting element is at most ten percent of an area covered on the common substrate by organic light emitting elements,

wherein the organic light emitting element has an area of greater than or equal to one square centimeter,

wherein the organic light detecting element and the organic light emitting element have an identical construction, and

wherein the organic light detecting element and the organic light emitting element are located in a common plane which is oriented perpendicularly to a stacking direction of the electrodes and of the organic functional layer stack of the organic light emitting element.