Organic light-emitting display panel and manufacturing method thereof

An organic light-emitting display panel, comprising:

• a first anode layer, comprising a plurality of patterned first anodes;
• a pixel definition layer, arranged on the first anode layer, wherein the pixel definition layer defines at least a first pixel region and a second pixel region adjacent to the first pixel region, a first opening is defined in the first pixel region, a second opening is defined in the second pixel region, an obtuse angle is formed between a side wall and a bottom surface in the first opening and an obtuse angle is formed between a side wall and a bottom surface in the second opening, the second opening has a depth smaller than that of first opening such that the bottom surface in the second opening is higher than the bottom surface of the first opening;
• a second anode layer, comprising a plurality of patterned second anodes, wherein the second anode is arranged in the second opening;
• an organic light-emitting layer, arranged in the first opening and the second opening, wherein the organic light-emitting layer in the first opening contacts the first anode, and the organic light-emitting layer in the second opening is disposed on the second anode and contacts the second anode;
• wherein a contact area between the organic light-emitting layer in the first opening and the first anode is equal to a contact area between the organic light-emitting layer in the second opening and the second anode.

A manufacturing method of an organic light-emitting display panel, comprising:

• forming a first anode layer, wherein the first anode layer comprises a plurality of first anodes;
• forming a pixel definition layer on the first anode layer, and defining a plurality of pixel regions on the pixel definition layer, wherein one of a first opening and a second opening is defined in each of the pixel regions, each of the pixel regions comprises a side wall and a bottom surface in each first opening and each second opening, an inclination angle is formed between the side wall and the bottom surface, the inclination angle is larger than 90° and smaller than 180°, the first opening is configured to correspond to the first anode and expose the first anode, and the second opening has a depth smaller than that of first opening;
• forming a second anode in the second opening;
• and
• forming an organic light-emitting layer in the first opening and the second opening, wherein a light-emitting area proportion in the first opening is smaller than a light-emitting area proportion in the second opening, the light-emitting area proportion is a percentage of a light-emitting area of a pixel region to an area of the pixel region, and the light-emitting area is a contact area between the organic light-emitting layer and the first anode or the second anode in each of the pixel regions;
• wherein a contact area between the organic light-emitting layer in the first opening and the first anode is equal to a contact area between the organic light-emitting layer in the second opening and the second anode.