Organic EL display panel

1. An organic EL display panel comprising:

a substrate;

a plurality of pixel electrodes arranged in rows and columns over the substrate;

an insulating film elongated in a row direction over the pixel electrodes, the insulating film having a portion recessed to coat edges of pixel electrodes adjacent in a column direction, the edges facing each other in the column direction;

a plurality of banks each elongated in the column direction over a region corresponding to a gap between pixel electrodes adjacent in the row direction;

a hole transport layer disposed above the pixel electrodes, and entirely above an upper surface of the insulating film in a gap between the banks;

an organic light-emitting layer disposed over the hole transport layer in the gap between the banks; and

a common electrode disposed over the organic light-emitting layer, wherein

a dielectric constant of the insulating film is at least 3.8,

the insulating film measures at least 10nm and at most 75nm in the thickness,

a hole mobility of the hole transport layer is at least 10 3 times and at most 10 5 times a hole mobility of the organic light-emitting layer, and

light is emitted from a first light-emitting portion and a second light-emitting portion of the light-emitting layer,

the first light-emitting portion being above the pixel electrodes excluding where the insulating film is disposed, and

the second light-emitting portion, with respect to a vertical direction, being above and vertically aligned with both the pixel electrodes and the insulating film, and

wherein a cross-sectional shape of each of the light emitting layer, the pixel electrodes, and the hole transport layer conforms to and to and extends across a width of a cross-sectional shape of a contact hole formed in an interlayer insulating film of the substrate so as to define a cavity above the contact hole.

2. The organic EL display panel according to claim 1 , wherein

the insulating film contains at least one selected from a group consisting of silicon oxide, silicon nitride and silicon oxynitride.

3. The organic EL display panel according to claim 1 , wherein

an amount of light emitted from the second light-emitting portion is at least 1/10 of an amount of light emitted from the first light-emitting portion.

4. The organic EL display panel according to claim 1 ,

wherein the second light-emitting portion is thinner than the first light-emitting portion.

5. The organic EL display panel according to claim 1 ,

wherein the insulating film contains at least one selected from a group consisting of hafnium silicon oxide and hafnium aluminum oxynitride.