ORGANIC LIGHT EMITTING DEVICE AND ANTISTATIC METHOD FOR THE SAME

• US 20130154478A1
• Filed: 06/30/2011
• Published: 06/20/2013
• Est. Priority Date: 08/25/2010
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Ohe, Masahito, Kondoh, Katsumi
• Application Number:
  US13/818,290
• Publication Number:
  US 20130154478A1
• Time in Patent Office: Days
• US Class Current: 315/85
• CPC Class Codes: H05B 33/02 Details
• CPC Class Codes: H05B 33/10 Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
• CPC Class Codes: H05B 44/00 Circuit arrangements for operating electroluminescent light sources for operating light emitting diodes H05B45/00
• CPC Class Codes: H10K 2102/3026 Top emission
• CPC Class Codes: H10K 50/80 Constructional details
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/854 comprising scattering means
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]

Abstract

An organic light emitting device includes first and second substrates, an organic light emitting element between the first and second substrates, a driving unit located between the first and second substrates to drive the organic light emitting element, a fluorescent layer included on a first surface of the first substrate, and a conductive layer with optical transparency included on a second surface of the first substrate, wherein the organic light emitting element includes a light emitting layer, and a pair of electrodes having the light emitting layer interposed therebetween, the fluorescent layer is provided above the electrode on the side from which light emitted from the light emitting layer is extracted among the pair of electrodes, the fluorescent layer performs fluorescence-conversion on a color of the light emitted from the light emitting layer, the fluorescent layer includes a layer that absorbs light having a specific wavelength, the first substrate has optical transparency, light is emitted from the fluorescence conversion layer to the outside through the first substrate, the fluorescent layer is arranged in a surface direction of the first substrate to form a pixel, and the conductive layer overlaps at least an area in which the pixel is formed.

Claims

1. An organic light emitting device comprising:

first and second substrates;

an organic light emitting element between the first and second substrates;

a driving unit located between the first and second substrates to drive the organic light emitting element;

a fluorescent layer provided on a first surface of the first substrate; and

a conductive layer with optical transparency provided on a second surface of the first substrate,

wherein the organic light emitting element includes a light emitting layer, and a pair of electrodes having the light emitting layer interposed therebetween,

the fluorescent layer is provided above the electrode on the side from which light emitted from the light emitting layer is extracted among the pair of electrodes,

the fluorescent layer performs fluorescence-conversion on a color of the light emitted from the light emitting layer,

the fluorescent layer includes a layer that absorbs light having a specific wavelength,

the first substrate has optical transparency,

light is emitted from the fluorescence conversion layer to the outside through the first substrate,

the fluorescent layer is arranged in a surface direction of the first substrate to form a pixel, and

the conductive layer overlaps at least an area in which the pixel is formed.

5. The organic light emitting device according to claim 1, wherein the conductive layer has unevenness.

6. The organic light emitting device according to claim 1, wherein the conductive layer has sheet resistance of 2×

10³Ω

·

□

or less.

7. The organic light emitting device according to claim 1, further comprising:

a polarizing plate on the conductive film,

wherein the conductive layer is configured by scattering conductive particles in an adhesive material for adhering the polarizing plate to the first substrate.

8. The organic light emitting device according to claim 1, wherein the conductive layer has a periodic structure.

9. The organic light emitting device according to claim 1, wherein the conductive layer or the conductive particles are formed of a metal.

10. The organic light emitting device according to claim 1, wherein the conductive layer or the conductive particles are formed of particles containing one of ITO, SnO₂ and In₂O₃ or a mixture of the particles.

11. The organic light emitting device according to claim 1, wherein a ground terminal is included on the first substrate, and the conductive layer is electrically connected to the ground terminal.

12. The organic light emitting device according to claim 1, wherein the pair of electrodes are reflective electrodes, and an optical film thickness between reflective interfaces defined by the pair of reflective electrodes is set to enhance intensity of light having a specific wavelength among lights emitted from the light emitting layer.

2. An organic light emitting device comprising:

first and second substrates;

an organic light emitting element between the first and second substrates;

a fluorescent layer between the first substrate and the organic light emitting element; and

a conductive layer with optical transparency between the first substrate and the fluorescent layer,

wherein the organic light emitting element includes a light emitting layer, and a pair of electrodes having the light emitting layer interposed therebetween,

the fluorescent layer is provided above the electrode on the side from which light emitted from the light emitting layer is extracted among the pair of electrodes,

the fluorescent layer performs fluorescence-conversion on a color of the light emitted from the light emitting layer, and

the fluorescent layer includes a layer that absorbs light having a specific wavelength.

16. The organic light emitting device according to claim 2, wherein the conductive layer has unevenness.

18. The organic light emitting device according to claim 2, wherein the conductive layer has sheet resistance of 2×

10³Ω

·

□

or less.

20. The organic light emitting device according to claim 2, wherein the conductive layer has a periodic structure.

22. The organic light emitting device according to claim 2, wherein the conductive layer or the conductive particles are formed of a metal.

24. The organic light emitting device according to claim 2, wherein the conductive layer or the conductive particles are formed of particles containing one of ITO, SnO₂ and In₂O₃ or a mixture of the particles.

27. The organic light emitting device according to claim 2, wherein a ground terminal is included on the first substrate, and the conductive layer is electrically connected to the ground terminal.

28. The organic light emitting device according to claim 2, wherein the pair of electrodes are reflective electrodes, and an optical film thickness between reflective interfaces defined by the pair of reflective electrodes is set to enhance intensity of light having a specific wavelength among lights emitted from the light emitting layer.

3. An organic light emitting device comprising:

an organic light emitting element;

a driving unit that drives the organic light emitting element; and

a fluorescent layer on the organic light emitting element,

wherein the organic light emitting element includes a light emitting layer, and a pair of electrodes having the light emitting layer interposed therebetween,

the fluorescent layer is provided above the electrode on the side from which light emitted from the light emitting layer is extracted among the pair of electrodes,

the fluorescent layer performs fluorescence-conversion on a color of the light emitted from the light emitting layer,

the fluorescent layer includes a layer that absorbs light having a specific wavelength, and

conductive particles are mixed within the fluorescent layer.

25. The organic light emitting device according to claim 3, wherein the conductive layer or the conductive particles are formed of particles containing one of ITO, SnO₂ and In₂O₃ or a mixture of the particles.

29. The organic light emitting device according to claim 3, wherein the pair of electrodes are reflective electrodes, and an optical film thickness between reflective interfaces defined by the pair of reflective electrodes is set to enhance intensity of light having a specific wavelength among lights emitted from the light emitting layer.

4. An organic light emitting device comprising:

an organic light emitting element;

a fluorescent layer on the organic light emitting element; and

a conductive layer arranged within the fluorescent layer or in contact with the fluorescent layer,

wherein the organic light emitting element includes a light emitting layer, and a pair of electrodes having the light emitting layer interposed therebetween,

the fluorescent layer is provided above the electrode on the side from which light emitted from the light emitting layer is extracted,

the fluorescent layer performs fluorescence-conversion on a color of the light emitted from the light emitting layer, and

the fluorescent layer includes a layer that absorbs light having a specific wavelength

17. The organic light emitting device according to claim 4, wherein the conductive layer has unevenness.

19. The organic light emitting device according to claim 4, wherein the conductive layer has sheet resistance of 2×

10³Ω

·

□

or less.

21. The organic light emitting device according to claim 4, wherein the conductive layer has a periodic structure.

23. The organic light emitting device according to claim 4, wherein the conductive layer or the conductive particles are formed of a metal.

26. The organic light emitting device according to claim 4, wherein the conductive layer or the conductive particles are formed of particles containing one of ITO, SnO₂ and In₂O₃ or a mixture of the particles.

13. An antistatic method for an organic light emitting device including first and second substrates, an organic light emitting element between the first and second substrates, and a fluorescent layer included on a first surface of the first substrate, the organic light emitting element including a light emitting layer and a pair of electrodes having the light emitting layer interposed therebetween, the fluorescent layer being provided above the electrode on the side from which light emitted from the light emitting layer is extracted among the pair of electrodes, the fluorescent layer performing fluorescence-conversion on a color of the light emitted from the light emitting layer, and the fluorescent layer including a layer that absorbs light having a specific wavelength,

wherein a conductor is arranged in the first substrate to prevent charging of the organic light emitting element.

15. The antistatic method for an organic light emitting device according to claim 13, characterized in that the conductor is grounded through connection to a power supply for the pair of electrodes.

14. An antistatic method for an organic light emitting device including first and second substrates, an organic light emitting element between the first and second substrates, and a fluorescent layer included on a first surface of the first substrate, the organic light emitting element including a light emitting layer and a pair of electrodes having the light emitting layer interposed therebetween, the fluorescent layer being provided above the electrode on the side from which light emitted from the light emitting layer is extracted among the pair of electrodes, the fluorescent layer performing fluorescence-conversion on a color of the light emitted from the light emitting layer, and the fluorescent layer including a layer that absorbs light having a specific wavelength,

wherein a conductor is arranged inside the fluorescent layer or around the fluorescent layer to prevent charging of the organic light emitting element.

30. The antistatic method for an organic light emitting device according to claim 14, characterized in that the conductor is grounded through connection to a power supply for the pair of electrodes.