ORGANIC EL DEVICE, METHOD OF PRODUCING ORGANIC EL DEVICE, AND ELECTRONIC APPARATUS

• US 20120038267A1
• Filed: 08/04/2011
• Published: 02/16/2012
• Est. Priority Date: 08/11/2010
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: HANAMURA, Yuki, IWATA, Shinichi, IWASAKI, Masanori, NISHIOKA, Daisuke
• Granted Patent: US 8,933,623 B2
• Time in Patent Office: Days
• US Class Current: 313/504
• CPC Class Codes: H10K 50/865 comprising light absorbing layers, e.g. light-blocking layers
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/8792 comprising light absorbing layers, e.g. black layers

Abstract

An organic EL device includes a substrate, an organic EL element that is formed on the substrate and is provided with a first electrode, a light emitting functional layer, and a second electrode having transparent conductivity to emit light to the second electrode side, a color filter that is formed on the second electrode side in a pixel area where the organic EL element emits the light, and a partition that is formed in a light shielding area that is an area other than the pixel area. The color filter is provided with any one of a red color filter, a green color filter, and a blue color filter. At least one color filter of the three color filters constitutes at least a part of the partition.

Claims

1. An organic EL device comprising:

a substrate;

an organic EL element that is formed above the substrate and is provided with a first electrode, a light emitting functional layer, and a second electrode having transparent conductivity to emit light to the second electrode side;

a color filter that is formed above the second electrode side in a pixel area where the organic EL element emits the light; and

a partition that is formed in a light shielding area that is an area other than the pixel area,

wherein the color filter is provided with any one of three color filters of a red color filter that allows red light to pass, a green color filter that allows green light to pass, and a blue color filter that allows blue light to pass, and

wherein at least one color filter of the three color filters constitutes at least a part of the partition.

2. The organic EL device according to claim 1, wherein at least the substrate side of the partition is formed of the red color filter.

3. The organic EL device according to claim 1, wherein at least the substrate side of the partition adjacent to the pixel area in the plan view is formed of the color filter formed in each pixel area.

4. The organic EL device according to claim 1, wherein the light emitting functional layer is a light emitting functional layer that emits white light,

wherein the second electrode is formed of a semi-transmissive and reflective material,

wherein a reflective layer is formed between the substrate and the light emitting functional layer, and

wherein an optical resonant structure is formed between the second electrode and the reflective layer.

5. The organic EL device according to claim 1, wherein a protective layer including an inorganic material layer is formed between the organic EL element and the color filter.

6. The organic EL device according to claim 5, wherein the protective layer is a layer including a planarization layer formed of an organic material formed on the organic EL element side and an inorganic material layer formed on the color filter side.

7. An electronic apparatus comprising the organic EL device according to claim 1.

8. An electronic apparatus comprising the organic EL device according to claim 2.

9. An electronic apparatus comprising the organic EL device according to claim 3.

10. An electronic apparatus comprising the organic EL device according to claim 4.

11. An electronic apparatus comprising the organic EL device according to claim 5.

12. An electronic apparatus comprising the organic EL device according to claim 6.

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

sequentially laminating an island-shaped first electrode, a light emitting functional layer, and a second electrode formed of a transparent conductive material to form an organic EL element in an image display area on a substrate;

partitioning the image display area into a pixel area included in the first electrode in plan view and a light shielding area that is an area other than the pixel area, and partitioning the pixel area into three kinds of pixel area of a red pixel area, a green pixel area, and a blue pixel area;

forming a red coloring layer in the red pixel area and the light shielding area; and

forming a green coloring layer in the green pixel area, and forming a blue coloring layer in the blue pixel area.

14. The method of producing the organic EL device according to claim 13, wherein in the forming of the green coloring layer and the blue coloring layer, the green coloring layer is formed in the green pixel area and a ring-shaped area surrounding the green pixel area, and the blue coloring layer is formed in the blue pixel area and a ring-shaped area surrounding the blue pixel area.

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

sequentially laminating an island-shaped first electrode, a light emitting functional layer, and a second electrode formed of a transparent conductive material to form an organic EL element in an image display area on a substrate;

partitioning the image display area into a pixel area included in the first electrode in the plan view and a light shielding area that is an area other than the pixel area, and partitioning the pixel area into three kinds of pixel areas of a red pixel area, a green pixel area, and a blue pixel area;

forming a red coloring layer in an area adjacent to the red pixel area between the red pixel area and the light shielding area;

forming a green coloring layer in an area adjacent to the green pixel area between the green pixel area and the light shielding area; and

forming a blue coloring layer in an area adjacent to the blue pixel area between the blue pixel area and the light shielding area.

16. The method of producing the organic EL device according to claim 15, wherein in the forming of the red coloring layer, the red coloring layer is formed in the area adjacent to the red pixel area between the red pixel area and the light shielding area, and in an area where the green coloring layer is not formed in the forming of the green coloring layer and the blue coloring layer is not formed in the forming of the blue coloring layer.