Flexible display apparatus, flexible display motherboard and method for manufacturing flexible display motherboard

1. A flexible display motherboard, comprising:

a flexible substrate;

a first layer on the top surface of the flexible substrate;

a second layer on the top surface of the first layer;

a third layer on the top surface of the second layer, wherein a plurality of flexible display units are defined on the flexible display motherboard, and

a first type of grooves are formed between two adjacent flexible display units of the plurality of flexible display units, and the first type of grooves each is displaced through at least the first layer and the second layer,

wherein the first type of grooves in the first layer includes materials of the first layer, and the first type of grooves in the first layer is further filled with materials from the second layer, and

wherein the first type of grooves in the second layer includes materials of the third layer.

2. The flexible display motherboard according to claim 1 , wherein the first layer and the second layer are layers selected from any of a buffer layer, a gate insulating layer, and a passivation layer.

3. The flexible display motherboard according to claim 2 , wherein the buffer layer comprises at least one of a silicon oxide thin film and a silicon oxide-silicon nitride thin film.

4. The flexible display motherboard according to claim 2 , wherein the flexible substrate comprises plastic.

5. The flexible display motherboard according to claim 2 , wherein the first type of grooves are formed by etching the buffer layer, and wherein a depth of the first grooves is equal to or less than a thickness of the buffer layer.

6. The flexible display motherboard according to claim 5 , wherein a difference between the depth of the plurality of first grooves and the thickness of the buffer layer is between about 0.05 μm and about 0.1 μm.

7. The flexible display motherboard according to claim 1 , wherein a width of the plurality of first grooves is between about 15 μm and about 20 μm.

8. The flexible display motherboard according to claim 1 , further comprising a second type of grooves overlapping with the gate lines and the data lines of the display units.

9. The flexible display motherboard according to claim 8 , wherein the second type of grooves are formed in at least one of the buffer layer, the gate insulating layer, and the passivation layer.

10. The flexible display motherboard according to claim 9 , wherein the second type of grooves is formed in the gate insulating layer, and the second type of grooves are not provided in regions where the gate lines intersect with the data lines.

11. The flexible display motherboard according to claim 9 , wherein the second type of grooves are formed in the buffer layer, and a depth of the second grooves is equal to or less than a thickness of the buffer layer.

12. The flexible display motherboard according to claim 11 , wherein a difference between the depth of the second grooves and the thickness of the buffer layer is between about 0.05 μm and about 0.1 μm.

13. A flexible display apparatus, comprising:

a plurality of flexible display units diced from a flexible display motherboard, wherein the flexible display motherboard comprises:

a flexible substrate;

a first layer on the top surface of the flexible substrate;

a second layer on the top surface of the first layer;

a third layer on the top surface of the second layer, wherein a plurality of flexible display units are defined on the flexible display motherboard, and

a first type of grooves are formed between two adjacent flexible display units of the plurality of flexible display units, and the first type of grooves each is displaced through at least the first layer and the second layer,

wherein the first type of grooves in the first layer includes materials of the first layer, and the first type of grooves in the first layer is further filled with materials from the second layer; and

wherein the first type of grooves in the second layer includes materials of the third layer.

14. A method of manufacturing a flexible display motherboard, the method comprising:

forming a flexible substrate;

forming a first layer on the top surface of the flexible substrate;

forming a second layer on the top surface of the first layer; and

forming a third layer on the top surface of the second layer,

wherein a plurality of flexible display units are defined on the flexible display motherboard,

wherein a first type of grooves are formed between two flexible display units of the plurality of flexible display units, and the first type of grooves each is displaced through at least the first layer and the second layer,

wherein the first type of grooves in the first layer includes materials of the first layer, and the first type of grooves in the first layer is further filled with materials from the second layer, and

wherein the first type of grooves in the second layer includes materials of the third layer.

15. The method according to claim 14 , wherein the first layer and the second layer are layers selected from any of a buffer layer, a gate insulating layer, and a passivation layer.

16. The method according to claim 15 , wherein the plurality of flexible display units comprises a first group and a second group of pixel units, wherein the first and second groups of pixel units are defined by the gate lines and data lines, wherein the method further comprising:

forming a second types of grooves between the first group and the second group of pixel units.

17. The method according to claim 16 , wherein forming the second type of grooves comprises:

etching at least one of the buffer layer, the gate insulating layer, and the passivation layer.