Array substrates and manufacturing methods thereof and display screens
View Patent ↗An array substrate includes a display region and a non-display region located outside the display region. The non-display region includes a flexible underlay and an inorganic film layer. A surface of the flexible underlay is provided with a number of slots thereon. The plurality of slots including a pair of adjacent slots. A region positioned between the adjacent slots on the flexible underlay is a trace region. The inorganic film layer includes a first inorganic film layer formed in the trace region and a second inorganic film layer formed on a bottom wall of the slots. The first inorganic film layer and the second inorganic film layer are divided by sidewalls of the slots. A peripheral metal trace is formed on the surface of the first inorganic film layer.
1. An array substrate, comprising a display region and a non-display region located outside the display region,
the non-display region comprising:
a flexible underlay, the flexible underlay having a plurality of slots recessed from a surface of the flexible underlay, the plurality of slots including a pair of adjacent slots, a region positioned between the adjacent slots on the flexible underlay being a trace region;
an inorganic film layer comprising a first inorganic film layer formed in the trace region and a second inorganic film layer formed on a bottom wall of the plurality of slots, the first inorganic film layer and the second inorganic film layer being divided by sidewalls of the slots; and
a peripheral metal trace formed on the surface of the first inorganic film layer;
a protective layer formed on a surface of the peripheral metal trace.
2. The array substrate according to claim 1 , wherein angles between the sidewalls of the slots and the bottom walls of the slots are less than 90 degrees.
3. The array substrate according to claim 2 , wherein a cross-section of the slots is characterized by an isosceles trapezoid shape.
4. The array substrate according to claim 1 , wherein a cross-section of the sidewalls of the slots is arc-shaped.
5. The array substrate according to claim 1 , wherein a depth of the slots is greater than 1 micron.
6. The array substrate according to claim 1 , wherein the plurality of the slots is provided between two adjacent metal traces.
7. The array substrate according to claim 1 , wherein the flexible underlay comprises a flexible underlay body layer and a flexible underlay surface layer.
8. The array substrate according to claim 7 , wherein the slots pass through the flexible underlay surface layer.
9. The array substrate according to claim 8 , wherein a thickness of the flexible underlay surface layer is equal to the depth of the slot.
10. The array substrate according to claim 9 , wherein the flexible underlay surface layer is a patterned flexible underlay surface layer, and a hollow region of the flexible underlay surface layer and the flexible underlay body layer constitute the slot.
11. The array substrate according to claim 1 , wherein a width of the first inorganic film layer is greater than a width of the peripheral metal trace.
12. The array substrate according to claim 1 , wherein the flexible underlay is a single layer structure.
13. A manufacturing method of an array substrate, the array substrate comprising a non-display region, the manufacturing method of the non-display region comprising:
providing a flexible underlay;
forming slots on the flexible underlay, a cross-section of a sidewall of the slots being configured as arc-shaped;
forming a first inorganic film layer on a surface of the flexible underlay;
forming a second inorganic film layer on a bottom wall of the slots; and
forming a peripheral metal trace on a surface of the first inorganic film layer.
14. The manufacturing method of the array substrate according to claim 13 , wherein the forming of the slots on the flexible underlay comprises:
providing a flexible underlay body layer; and
forming a patterned flexible underlay surface layer on the flexible underlay body layer such that a hollow region of the flexible underlay surface layer and the flexible underlay body layer form the slots.
15. An array substrate, comprising a display region and a non-display region located outside the display region,
the non-display region comprising:
a flexible underlay, the flexible underlay having a plurality of slots defined on a surface thereof, the plurality of slots including a pair of adjacent slots, a region positioned between the adjacent slots on the flexible underlay being a trace region;
an inorganic film layer comprising a first inorganic film layer formed in the trace region and a second inorganic film layer formed on a bottom wall of the plurality of slots, the first inorganic film layer and the second inorganic film layer being divided by sidewalls of the slots; and
a peripheral metal trace formed on the surface of the first inorganic film layer;
wherein a cross-section of the sidewalls of the slots is arc-shaped.
16. The array substrate according to claim 15 , wherein angles between the sidewalls of the slots and the bottom walls of the slots are less than 90 degrees.
17. The array substrate according to claim 15 , wherein the flexible underlay comprises a flexible underlay body layer and a flexible underlay surface layer.
18. The array substrate according to claim 17 , wherein the flexible underlay surface layer is a patterned flexible underlay surface layer, and a hollow region of the flexible underlay surface layer and the flexible underlay body layer constitute the slot.
19. The array substrate according to claim 15 , wherein a width of the first inorganic film layer is greater than a width of the peripheral metal trace.
20. The array substrate according to claim 15 , wherein the array substrate further comprises a protective layer formed on a surface of the peripheral metal trace.