Organic light-emitting display panel, display device, and fabrication method thereof

1. An organic light-emitting display panel, divided into a display region and a non-display region surrounding the display region, and comprising:

a substrate;

an array layer formed over the substrate;

a pixel defining layer formed on a surface of the array layer away from the substrate;

a plurality of organic light-emitting devices formed in a plurality of openings of the pixel defining layer, wherein the plurality of organic light-emitting devices are disposed in the display region, and each organic light-emitting device includes an anode, an organic light-emitting layer, and a cathode sequentially formed on the substrate in a direction away from the substrate;

a plurality of support units disposed in the non-display region, wherein at least one support unit of the plurality of support units is disposed on a surface of the pixel defining layer away from the substrate,

wherein:

in the non-display region, the pixel defining layer includes a plurality of island structures isolated from each other, and at least one support unit of the support units is disposed on the plurality of island structures.

2. The organic light-emitting display panel according to claim 1 , wherein:

a quantity of the plurality of support units is smaller than a quantity of the plurality of island structures.

3. The organic light-emitting display panel according to claim 1 , further including:

an auxiliary conductive layer disposed in the non-display region, wherein the auxiliary conductive layer is in a same layer as the anode, and the cathode is in contact with the anode through a spacing between the plurality of island structures.

4. The organic light-emitting display panel according to claim 1 , wherein:

in a direction perpendicular to the substrate, a thickness of the plurality of island structures is larger than a thickness of the pixel defining layer in the display region.

5. The organic light-emitting display panel according to claim 1 , wherein:

a minimum straight-line distance from a support unit, among the plurality of support units, to an edge of the display region is in a range of approximately 50 μm to 150 μm.

6. A display device, comprising the organic light-emitting display panel according to claim 1 .

7. An organic light-emitting display panel, divided into a display region and a non-display region surrounding the display region, and comprising:

a substrate;

an array layer formed over the substrate;

a pixel defining layer formed on a surface of the array layer away from the substrate;

a plurality of organic light-emitting devices formed in a plurality of openings of the pixel defining layer, wherein the plurality of organic light-emitting devices are disposed in the display region, and each organic light-emitting device includes an anode, an organic light-emitting layer, and a cathode sequentially formed on the substrate in a direction away from the substrate;

a plurality of support units disposed in the non-display region, wherein at least one support unit of the plurality of support units is disposed on a surface of the pixel defining layer away from the substrate,

wherein:

the plurality of support units include a plurality of first support units located within a region covered by an orthogonal projection of the cathode on the substrate, and a plurality of second support units located outside the region covered by the orthogonal projection of the cathode on the substrate.

8. The organic light-emitting display panel according to claim 7 , wherein:

a minimum straight-line distance from a second support unit, among the plurality of second support units, to an edge of the display region is in a range of approximately 50 μm to 150 μm;

a maximum straight-line distance from a second support unit, among the plurality of second support units, to the edge of the display region is smaller than or equal to 250 μm; and

a minimum straight-line distance from a first support unit, among the plurality of first support units, to the edge of the display region is in a range of approximately 250 μm to 350 μm.

9. The organic light-emitting display panel according to claim 7 , wherein:

in a direction perpendicular to the substrate, a height of the plurality of first support units is larger than a height of the plurality of second support units.

10. The organic light-emitting display panel according to claim 7 , further including:

a plurality of main support pillars disposed in the display region and on the surface of the pixel defining layer away from the substrate, wherein:

in a direction perpendicular to the substrate, a height of the plurality of support units is smaller than a height of the plurality of main support pillars.

11. The organic light-emitting display panel according to claim 7 , further including:

a retaining wall disposed in the non-display region, wherein:

the retaining wall is formed on a surface of the array layer away from the substrate and surrounds the display region; and

at least one support unit of the plurality of support units is formed on a surface of the retaining wall away from the substrate.

12. The organic light-emitting display panel according to claim 7 , wherein:

the plurality of support units include a plurality of third support units and a plurality of fourth support units, wherein a height of the plurality of third support units is larger than a height of the plurality of fourth support units.

13. The organic light-emitting display panel according to claim 12 , wherein:

the plurality of third support units and the plurality of fourth support units are alternately arranged along a linear path from an edge of the display region to an edge of the organic light-emitting display panel.

14. The organic light-emitting display panel according to claim 1 , further including a packaging layer formed to fully cover the plurality of organic light-emitting devices.