Array substrates and methods for manufacturing thereof and display screens

1. An array substrate, comprising:

an active area; and

a non-active area located outside the active area;

wherein the non-active area comprises:

a flexible substrate having a surface, wherein the flexible substrate is provided with a plurality of grooves, and

a peripheral metal wiring being located in the plurality of grooves,

wherein: a width of the peripheral metal wiring is less than a width of the groove, the peripheral metal wiring is located at an intermediate position of the groove, the non-active area further comprises a buffer strip formed in the groove, and the buffer strip fills between both sides of the peripheral metal wiring and the groove, along a width direction,

wherein the non-active area further comprises a stress buffer layer formed between bottom walls of the grooves and the peripheral metal wiring, wherein the stress buffer layer is provided with a plurality of through holes.

2. The array substrate of claim 1 , wherein depths of the plurality of grooves are different from each other.

3. The array substrate of claim 1 , wherein the non-active area further comprises an encapsulation layer formed on a surface of the flexible substrate proximate to the peripheral metal wiring.

4. The array substrate of claim 1 , wherein the flexible substrate comprises a flexible substrate main layer, and a flexible substrate surface layer is formed on a surface of the flexible substrate main layer adjacent to the peripheral metal wiring.

5. The array substrate of claim 4 , wherein the flexible substrate main layer comprises at least one flexible substrate layer, and the flexible substrate surface layer comprises at least one flexible substrate layer.

6. The array substrate of claim 4 , wherein the flexible substrate surface layer is a patterned flexible substrate surface layer; and hollow regions of the flexible substrate surface layer and the flexible substrate main layer form the grooves.

7. The array substrate of claim 4 , wherein a thickness of the flexible substrate surface layer is equal to a depth of the groove.

8. The array substrate of claim 1 , wherein the plurality of grooves is arranged in a grid shape.

9. A display screen, comprising the array substrate of claim 1 .

10. The array substrate of claim 1 , wherein the flexible substrate comprises a plurality of stacked flexible substrate layers.

11. The array substrate of claim 1 , wherein a cross section of each of the plurality of grooves comprises a trapezoid.

12. A method for manufacturing an array substrate comprising an active area and a non-active area, comprising manufacturing the non-active area of the array substrate,

wherein the manufacturing the non-active area of the array substrate comprises:

providing a flexible substrate;

forming a plurality of grooves on a surface of the flexible substrate;

forming a stress buffer layer on bottom walls of the plurality of grooves;

forming a plurality of through holes in the stress buffer layer within the grooves;

forming a peripheral metal wiring in the plurality of grooves, and

forming a buffer strip on both sides of the peripheral metal wiring in the plurality of grooves.

13. The method of claim 12 , wherein the forming the plurality of grooves on the surface of the flexible substrate comprises:

providing a flexible substrate main layer; and

forming a patterned flexible substrate surface layer on the flexible substrate main layer, hollow regions of the flexible substrate surface layer and the flexible substrate main layer forming the grooves.

14. The method of claim 13 , wherein the forming the patterned flexible substrate surface layer on the flexible substrate main layer comprises:

forming the patterned flexible substrate surface layer on the flexible substrate main layer by means of a mask.