Organic el display panel and method of manufacturing organic el display panel

1. An organic electroluminescence (EL) display panel, including a plurality of pixels arranged in a matrix, the organic EL display panel comprising:

a substrate;

a plurality of pixel electrode layers that are made of a light-reflective material and are arranged on the substrate in a matrix;

an insulating layer that is provided at least above row and column outer edges of the pixel electrode layers and above inter-regions on the substrate between the row and column outer edges;

an organic functional layer that is provided above the pixel electrode layers; and

a counter electrode layer that is made of a light-transmissive material and is provided above the organic functional layer,

wherein the organic functional layer includes a plurality of light-emitting layers that are provided in regions above the pixel electrode layers where the insulating layer is not provided, the light-emitting layers causing organic electroluminescence,

wherein the insulating layer has an optical density of 0.5 to 1.5 in a direction of the substrate when viewed in plan,

wherein the insulating layer includes

a plurality of column insulating sublayers that are provided at least above the row outer edges of the pixel electrode layers and above the inter-regions on the substrate between the row outer edges; and

a plurality of row insulating sublayers that are provided at least above the column outer edges of the pixel electrode layers and above the inter-regions on the substrate between the column outer edges, and

the light-emitting layers are each provided in a gap between two adjacent of the column insulating sublayers, and

wherein the row insulating sublayers have a higher optical density than the column insulating sublayers.

2. The organic EL display panel of claim 1 ,

wherein the substrate is made of a light-transmissive material, and

light entering from a rear surface of the substrate at least transmits through the inter-regions and is emitted upward.

3. The organic EL display panel of claim 1 ,

wherein the row insulating sublayers have a lower liquid repellency against an organic solvent than the column insulating sublayers.

4. The organic EL display panel of claim 3 ,

wherein the light-emitting layers are continuous on the row insulating sublayers in the column direction.

5. The organic EL display panel of claim 1 ,

wherein when the substrate is viewed in plan, in one subpixel emitting red, green, or blue light, the inter-region has an area that is 10% to 120% of an area of a self-luminescent region on the pixel electrode layer where the insulating layer is not provided.

6. The organic EL display panel of claim 1 , further comprising:

an upper substrate that is made of a light-transmissive material and is provided above the counter electrode layer,

wherein a light shielding layer is not provided on a part of the upper substrate above the row and column outer edges of the pixel electrode layers.

7. The organic EL display panel of claim 1 ,

wherein the substrate is flexible.

8. An organic electroluminescence (EL) display panel, including a plurality of pixels arranged in a matrix, the organic EL display panel comprising:

a substrate;

a plurality of pixel electrode layers that are made of a light-reflective material and are arranged on the substrate in a matrix;

an insulating layer that is provided at least above row and column outer edges of the pixel electrode layers and above inter-regions on the substrate between the row and column outer edges;

an organic functional layer that is provided above the pixel electrode layers;

a counter electrode layer that is made of a light-transmissive material and is provided above the organic functional layer; and

a plurality of column banks that are provided, on part of the insulating layer, at least above the row outer edges of the pixel electrode layers and above the inter-regions on the substrate between the row outer edges,

wherein the organic functional layer includes a plurality of light-emitting layers that are provided in regions above the pixel electrode layers where the insulating layer is not provided, the light-emitting layers causing organic electroluminescence,

wherein the insulating layer has an optical density of0.5 to 1.5 in a direction of the substrate when viewed in plan,

wherein the insulating layer has a higher optical density than the column banks.

9. The organic EL display panel of claim 8 ,

wherein the column banks have a higher liquid repellency against an organic solvent than the insulating layer.

10. The organic EL display panel of claim 8 ,

wherein the substrate is made of a light-transmissive material, and

light entering from a rear surface of the substrate at least transmits through the inter-regions and is emitted upward.

11. The organic EL display panel of claim 8 ,

wherein when the substrate is viewed in plan, in one subpixel emitting red, green, or blue light, the inter-region has an area that is 10% to 120% of an area of a self-luminescent region on the pixel electrode layer where the insulating layer is not provided.

12. The organic EL display panel of claim 8 , further comprising

an upper substrate that is made of a light-transmissive material and is provided above the counter electrode layer,

wherein a light shielding layer is not provided on a part of the upper substrate above the row and column outer edges of the pixel electrode layers.

13. The organic EL display panel of claim 8 ,

wherein the substrate is flexible.

14. An organic electroluminescence (EL) display panel, including a plurality of pixels arranged in a matrix, the organic EL display panel comprising:

a substrate:

a plurality of pixel electrode layers that are made of a light-reflective material and are arranged on the substrate in a matrix;

an insulating layer that is provided at least above row and column outer edges of the pixel electrode layers and above inter-regions on the substrate between the row and column outer edges;

an organic functional layer that is provided above the pixel electrode layers; and

a counter electrode layer that is made of a light-transmissive material and is provided above the organic functional layer,

wherein the organic functional layer includes a plurality of light-emitting layers that are provided in regions above the pixel electrode layers where the insulating layer is not provided, the light-emitting layers causing organic electroluminescence,

wherein the insulating layer has an optical density of 0.5 to 1.5 in a direction of the substrate when viewed in plan, and

wherein the insulating layer contains a resin binder and at least one component selected from carbon, molybdenum, and chromium.

15. The organic EL display panel of claim 14 ,

wherein the substrate is made of a light-transmissive material, and

light entering from a rear surface of the substrate at least transmits through the inter-regions and is emitted upward.

16. The organic EL display panel of claim 14 ,

wherein when the substrate is viewed in plan, in one subpixel emitting red, green, or blue light, the inter-region has an area that is 10% to 120% of an area of a self-luminescent region on the pixel electrode layer where the insulating layer is not provided.

17. The organic EL display panel of claim 14 , further comprising:

an upper substrate that is made of a light-transmissive material and is provided above the counter electrode layer,

wherein a light shielding layer is not provided on a part of the upper substrate above the row and column outer edges of the pixel electrode layers.

18. The organic EL display panel of claim 14 ,

wherein the substrate is flexible.