Organic light-emitting display substrate, manufacturing method therefor, and organic light-emitting display device
An organic light-emitting display substrate, a manufacturing method therefor, and an organic light-emitting display device. The organic light-emitting display substrate comprises a base substrate and multiple sub-pixels that are located on the base substrate and that are arranged in an array manner. Each sub-pixel comprises an organic light-emitting layer. At least one blocking element is disposed between two adjacent sub-pixels that emit light of different colors.
1. An organic light-emitting display substrate, comprising a base substrate and a plurality of sub-pixels arranged in an array on the base substrate,
wherein, each of the sub-pixels includes an organic light-emitting layer, and at least one blocking element is provided between two adjacent sub-pixels emitting light of different colors;
wherein, a plurality of blocking elements are provided between two adjacent sub-pixels, each the blocking element has a strip shape, and a long side of each blocking element is parallel to a side edge of the sub-pixel which is close to the blocking element; the plurality of blocking elements between two adjacent sub-pixels are arranged in a staggered manner, and there is a gap between two adjacent blocking elements.
2. The organic light-emitting display substrate according to claim 1 , wherein, at least one blocking element is provided between two adjacent sub-pixels emitting light of a same color.
3. The organic light-emitting display substrate according to claim 1 , wherein, a top end of the blocking element is higher than a top end of the organic light-emitting layer.
4. The organic light-emitting display substrate according to claim 1 , wherein, only one blocking element is provided between two adjacent sub-pixels, each of the blocking element has a strip shape, a long side of each blocking element is parallel to a side edge of the sub-pixel which is close to the blocking element.
5. The organic light-emitting display substrate according to claim 4 , wherein, a length of the long side of the blocking element is greater than or equal to a length of the side edge of the sub-pixel which is close to the blocking element.
6. The organic light-emitting display substrate according to claim 1 , wherein, an effective length of each blocking element in a direction parallel to the side edge of the sub-pixel which is close to the blocking element is greater than or equal to the length of the side edge of the sub-pixel which is close to the blocking element.
7. The organic light-emitting display substrate according to claim 1 , wherein, a length of the long side of each of the blocking elements is less than a length of the side edge of each of the blocking elements.
8. The organic light-emitting display substrate according to claim 1 , further comprising:
a cathode layer covering the organic light-emitting layer and the blocking element, wherein the top end of the blocking element has a circular arc shape.
9. The organic light-emitting display substrate according to claim 8 , wherein, the sub-pixel further includes an anode layer located between the organic light-emitting layer and the base substrate, and
the organic light-emitting display substrate further comprises a pixel defining layer located above the anode layer, the pixel defining layer located between two adjacent sub-pixels has a vertical section of a circular arc shape, and the blocking element is located on the pixel defining layer, or, the blocking element passes through the pixel defining layer.
10. The organic light-emitting display substrate according to claim 9 , wherein, the blocking element passes through the pixel defining layer, and the organic light-emitting display substrate further comprises an auxiliary electrode layer located below the organic light-emitting layer.
11. The organic light-emitting display substrate according to claim 10 , wherein, a material of the blocking element comprises a metal, and the auxiliary electrode layer is electrically connected with the cathode layer via the blocking element.
12. The organic light-emitting display substrate according to claim 1 , wherein, the at least one blocking element surrounds the plurality of the sub-pixels arranged in an array, so as to form a pixel defining layer.
13. The organic light-emitting display substrate according to claim 12 , wherein the blocking element includes a bottom of a circular arc shape and a top located above the bottom, and a top end of the top has a circular arc shape.
14. An organic light-emitting display device, comprising the organic light-emitting display substrate according to claim 1 .
15. A fabrication method of an organic light-emitting display substrate, comprising:
forming at least one blocking element between two adjacent sub-pixels emitting light of different colors on a base substrate; and
forming an organic light-emitting layer in each of the sub-pixels;
wherein, the organic light-emitting layer is formed after forming the blocking element;
wherein, forming an organic light-emitting layer in each of the sub-pixels comprises:
covering the base substrate on which the blocking element is formed with a mask,
bringing the mask into contact with a top end of the blocking element, and
forming the organic light-emitting layer in each of the sub-pixels by an evaporating process.
16. The organic light-emitting display substrate according to claim 2 , wherein, a top end of the blocking element is higher than a top end of the organic light-emitting layer.
17. The organic light-emitting display substrate according to claim 2 , wherein, only one blocking element is provided between two adjacent sub-pixels, each of the blocking element has a strip shape, a long side of each blocking element is parallel to a side edge of the sub-pixel which is close to the blocking element.