Organic light emitting display panel and method of manufacturing the same
Discussed is a method of manufacturing an organic light emitting display panel for simplifying a manufacturing process and enhancing display quality. The organic light emitting display panel can include a first electrode disposed in each of subpixel areas of a substrate, bank layers disposed on the substrate at a boundary portion between adjacent subpixel areas, a lateral surface of the bank layers being hydrophilic, a first organic material layer disposed on the bank layers and the first electrode, a surface of the first organic material layer on the bank layers being hydrophobic, a second organic material layer disposed on the first organic material layer between adjacent bank layers, a third organic material layer disposed on the second organic material layer and the first organic material layer, and a second electrode disposed on the third organic material layer.
1 . An organic light emitting display panel comprising:
a first electrode disposed in each of a plurality of subpixel areas of a substrate;
a second electrode;
at least one deposition layer on the first electrode;
at least one soluble layer on the at least one deposition layer; and
a plurality of bank layers on the substrate,
wherein the plurality of bank layers are disposed on the substrate at a boundary portion between adjacent subpixel areas of the plurality of subpixel areas, at least a lateral surface of the plurality of bank layers being hydrophilic, and
wherein the at least one deposition layer includes a first deposition layer including a first organic material layer disposed on the plurality of bank layers and the first electrode, a surface of the first organic material layer on the plurality of bank layers being hydrophobic.
2 . The organic light emitting display panel of claim 1 , wherein the at least one soluble layer includes a first soluble layer including a second organic material layer disposed on the first organic material layer between adjacent bank layers of the plurality of bank layers,
wherein the at least one deposition layer further includes a second deposition layer including a third organic material layer disposed on the second organic material layer and the first organic material layer, and
wherein the second electrode is disposed on the third organic material layer.
3 . The organic light emitting display panel of claim 2 , wherein the first organic material layer comprises at least one of a hole injection layer and a hole transport layer,
wherein the second organic material layer comprises an emission layer, and
wherein the third organic material layer comprises at least one of an electron transport layer and an electron injection layer.
4 . The organic light emitting display panel of claim 2 , wherein the plurality of subpixel areas including red, green, and blue subpixel areas that are defined in the substrate,
wherein the first organic material layer is disposed on the first electrode and on a top surface and the lateral surface of the plurality of bank layers, a top surface of the first organic material layer on the plurality of bank layers being hydrophobic,
wherein the at least one soluble layer further includes a second soluble layer including a fourth organic material layer disposed between the second organic material layer and the first organic material layer, and
wherein the fourth organic material layer is disposed on only the first organic material layer of the red subpixel area and the green subpixel area between adjacent bank layers.
5 . The organic light emitting display panel of claim 4 , wherein the first organic material layer comprises at least one of a hole injection layer and a first hole transport layer,
wherein the second organic material layer comprises an emission layer,
wherein the third organic material layer comprises at least one of an electron transport layer and an electron injection layer, and
wherein the fourth organic material layer comprises a second hole transport layer.
6 . The organic light emitting display panel of claim 2 , wherein the plurality of subpixel areas including red, green, and blue subpixel areas are defined in the substrate,
wherein the at least one soluble layer further includes a second soluble layer including a fourth organic material layer and a third soluble layer including a fifth organic material layer which are disposed on the second deposition layer between adjacent bank layers of the plurality of bank layers,
wherein the at least one deposition layer further includes a third deposition layer including a sixth organic material layer disposed on the third soluble layer and the second deposition layer,
wherein a surface of the third organic material layer on the plurality of bank layers being hydrophobic,
wherein the second electrode is disposed on the sixth organic material layer, and
wherein the fourth organic material layer comprises a first hole transport layer disposed on only the second deposition layer of the red subpixel area and the green subpixel area between adjacent bank layers of the plurality of bank layers, and the fifth organic material layer comprises a first emission layer disposed in the red subpixel area, the green subpixel area, and the blue subpixel area.
7 . The organic light emitting display panel of claim 6 , wherein the first organic material layer comprises a second hole transport layer,
wherein the second organic material layer comprises a first emission layer,
wherein the third organic material layer comprises a first electron transport layer, an n-type charge generating layer, a p-type charge generating layer, and a second hole transport layer, and
wherein the sixth organic material layer comprises a second electron transport layer and an electron injection layer.