Stretchable display panel, display apparatus, and method of fabricating stretchable display panel

1. A stretchable display panel, comprising:

a plurality of encapsulated islands;

a plurality of bridges connecting the plurality of encapsulated islands; and

a plurality of signal lines extending through a respective one of the plurality of bridges;

wherein the respective one of the plurality of bridges connects two adjacent encapsulated islands of the plurality of encapsulated islands along an extension direction from a first one of the two adjacent encapsulated islands to a second one of the two adjacent encapsulated islands;

the respective one of the plurality of bridges comprises a plurality of first parts and a plurality of second parts alternately arranged;

a respective one of the plurality of first parts extends along the extension direction;

a respective one of the plurality of second parts extends along the extension direction;

wherein the stretchable display panel comprises an insulating layer;

the insulating layer comprises a plurality of insulating blocks respectively in the plurality of first parts;

the insulating layer is at least partially absent in the respective one of the plurality of second parts; and

at least one of the plurality of second parts comprises at least one of the plurality of signal lines.

2. The stretchable display panel of claim 1 , wherein at least one of the plurality of first parts comprises at least one of the plurality of signal lines on a respective one of the plurality of insulating blocks.

3. The stretchable display panel of claim 1 , wherein the plurality of signal lines are limited in the plurality of first parts; and

the plurality of second parts are absent of the plurality of signal lines.

4. The stretchable display panel of claim 1 , wherein a respective one of the plurality of first parts has a width of a cross-section along a plane intersecting the plurality of first parts and the plurality of second parts; and

a ratio of the width to a thickness of the respective one of the plurality of first parts is in a range of 1:5 to 5:1.

5. The stretchable display panel of claim 4 , wherein the ratio of width to the thickness is in a range of 1:1.5 to 1.5:1.

6. The stretchable display panel of claim 1 , wherein two adjacent insulating blocks respectively in two adjacent first parts of the plurality of first parts are spaced apart from each other by a spacing.

7. The stretchable display panel of claim 6 , wherein the spacing is a groove; and

the stretchable display panel comprises a flexible base substrate extending through regions corresponding to the plurality of first parts and the plurality of second parts.

8. The stretchable display panel of claim 7 , wherein a respective one of the plurality of insulating blocks in the respective one of the plurality of first parts is in direct contact with the flexible base substrate; and

a surface of the flexible base substrate forms a bottom of the groove.

9. The stretchable display panel of claim 7 , wherein the respective one of the plurality of first parts further comprises at least a respective one of a plurality of second insulating blocks between the respective one of the plurality of insulating blocks and the flexible base substrate;

the respective one of the plurality of insulating blocks in the respective one of the plurality of first parts is in direct contact with the respective one of the plurality of second insulating blocks; and

a surface of the respective one of the flexible base substrate forms a bottom of the groove.

10. The stretchable display panel of claim 6 , wherein the spacing is a gap extending through an entire thickness of the respective one of the plurality of bridges; and

the stretchable display panel is absent of any flexible base substrate in regions corresponding to the plurality of second parts.

11. The stretchable display panel of claim 10 , wherein the respective one of the plurality of insulating blocks in the respective one of the plurality of first parts is in direct contact with a flexible base substrate.

12. The stretchable display panel of claim 10 , wherein the respective one of the plurality of first parts further comprises at least a respective one of a plurality of second insulating blocks between the respective one of the plurality of insulating blocks and a flexible base substrate; and

the respective one of the plurality of insulating blocks in the respective one of the plurality of first parts is in direct contact with the respective one of the plurality of second insulating blocks.

13. A stretchable display panel, comprising:

a plurality of encapsulated islands; and

a plurality of bridges connecting the plurality of encapsulated islands;

wherein a respective one of the plurality of bridges connects two adjacent encapsulated islands of the plurality of encapsulated islands along an extension direction from a first one of the two adjacent encapsulated islands to a second one of the two adjacent encapsulated islands;

the respective one of the plurality of bridges comprises a plurality of first parts and a plurality of second parts alternately arranged;

a respective one of the plurality of first parts extends along the extension direction;

a respective one of the plurality of second parts extends along the extension direction;

wherein the stretchable display panel comprises an insulating layer;

the insulating layer comprises a plurality of insulating blocks respectively in the plurality of first parts; and

the insulating layer is at least partially absent in the respective one of the plurality of second parts;

wherein the insulating layer is a part of a barrier layer extending from the plurality of encapsulated islands into the respective one of the plurality of bridges.

14. A display apparatus, comprising the stretchable display panel of claim 1 , and one or more integrated circuits connected to the stretchable display panel.

15. A method of fabricating a stretchable display panel, comprising:

forming a plurality of encapsulated islands; and

forming a plurality of bridges connecting the plurality of encapsulated islands;

wherein a respective one of the plurality of bridges is formed to connect two adjacent encapsulated islands of the plurality of encapsulated islands along an extension direction from a first one of the two adjacent encapsulated islands to a second one of the two adjacent encapsulated islands;

forming the respective one of the plurality of bridges comprises forming a plurality of first parts and a plurality of second parts alternately arranged;

a respective one of the plurality of first parts is formed to extend along the extension direction;

a respective one of the plurality of second parts is formed to extend along the extension direction;

wherein forming the stretchable display panel comprises forming an insulating layer;

forming the insulating layer comprises forming a plurality of insulating blocks respectively in the plurality of first parts; and

the insulating layer is at least partially absent in the respective one of the plurality of second parts;

wherein the method further comprises:

forming a flexible base substrate on a support substrate;

forming an insulating material layer on a side of the flexible base substrate away from the support substrate;

forming a conductive material layer on a side of the insulating material layer away from the flexible base substrate;

patterning the conductive material layer to form a plurality of signal lines in a region corresponding to the plurality of bridges, wherein a portion of the conductive material layer is removed in a region corresponding to a plurality of gaps respectively between adjacent bridges of the plurality of bridges;

removing the insulating material layer in the region corresponding to the plurality of gaps; and

patterning the insulating material layer to form the plurality of insulating blocks respectively in the plurality of first parts.

16. The method of claim 15 , wherein patterning the conductive material layer is performed subsequent to forming an insulating material layer; and

removing the insulating material layer in the region corresponding to the plurality of gaps and patterning the insulating material layer are performed subsequent to patterning the conductive material layer.

17. The method of claim 15 , wherein forming the conductive material layer is performed subsequent to forming the insulating material layer, patterning the insulating material layer, and removing the insulating material layer in the region corresponding to the plurality of gaps.