Organic EL device and method for producing the same

• US 20040140762A1
• Filed: 01/06/2004
• Published: 07/22/2004
• Est. Priority Date: 01/14/2003
• Status: Abandoned Application

• Current Assignee: Tohoku Pioneer Company Limited (Pioneer Corporation)
• Original Assignee: Tohoku Pioneer Company Limited (Pioneer Corporation)
• Inventors: Tohma, Teruo, Kimura, Masami, Menda, Michio
• Application Number:
  US10/751,632
• Publication Number:
  US 20040140762A1
• Time in Patent Office: Days
• US Class Current: 313/506
• CPC Class Codes: H10K 2102/3026 Top emission
• CPC Class Codes: H10K 50/125 specially adapted for multicolour light emission, e.g. for emitting white light
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 50/86 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/873 Encapsulations
• CPC Class Codes: H10K 59/8791 Arrangements for improving contrast, e.g. preventing reflection of ambient light

Abstract

In an organic EL device having a lower electrode, an upper electrode, and an organic light-emitting functional layer provided between the lower and upper electrodes and containing at least a light-emitting layer, the organic EL device formed on a substrate is sealed with a transparent passivation film and a color filter is provided on the passivation film. The organic EL device can be formed thinly. In an active drive type organic EL device having a TFT provided between the substrate and the organic light-emitting functional layer, the color filter can be set after the organic EL device is sealed with the passivation film. In addition to improvement in numerical aperture and contrast, deterioration of the color filter caused by a high-temperature process for production of the TFT can be avoided.

Claims

1. An organic EL device comprising:

a lower electrode;

an upper electrode;

an organic light-emitting functional layer provided between the lower and upper electrodes and containing at least a light-emitting layer;

a transparent passivation film for sealing the lower and upper electrodes and the organic light-emitting functional layer; and

a color filter provided above the passivation film.

3. The organic EL device according to claim 1, wherein the color filter is laminated above the passivation film.

4. The organic EL device according to claim 1, wherein the color filter is formed as a film on the passivation film so that the passivation film is coated with the color filter.

5. The organic EL device according to a claim 1, wherein the passivation film comprises a laminate of a plurality of sealing layers.

6. The organic EL device according to claim 1, wherein the passivation film is formed as a film.

7. The organic EL device according to claim 1, further comprising a thin-film transistor formed above the substrate, wherein the organic light-emitting functional layer is provided above the thin-film transistor.

2. An organic EL device comprising:

a substrate;

a lower electrode provided on the substrate;

an upper electrode;

an organic light-emitting functional layer provided between the lower and upper electrodes and containing at least a light-emitting layer;

a transparent passivation film for sealing the lower and upper electrodes and the organic light-emitting functional layer; and

a color filter provided above the passivation film,

wherein light is extracted from a surface opposite to the substrate.

8. A method of producing an organic EL device comprising:

sealing the organic EL device with a transparent passivation film; and

providing a color filter above the passivation film.

9. The method of producing an organic EL device according to claim 8, wherein the organic EL device includes a lower electrode, an upper electrode, and an organic light-emitting functional layer provided between the lower and upper electrodes and containing at least a light-emitting layer.

10. The method of producing an organic EL device according to claim 9, wherein the organic EL device includes a substrate, a lower electrode provided above the substrate.

11. The method of producing an organic EL device according to claim 8, further comprising laminating a color filter above the passivation film.

12. The method of producing an organic EL device according to-claim 8, wherein the color filter is formed as a film on the passivation film so that the passivation film is coated with the color filter.

13. The method of producing an organic EL device according to claim 8, wherein the passivation film comprises a laminate of a plurality of sealing layers.

14. The method of producing an organic EL device according to claim 8, wherein the passivation film is formed as a film.

15. The method of producing an organic EL device according to claim 8, further comprising providing a organic light-emitting functional layer on a thin-film transistor formed above a substrate.