Stretchable display device

1. A stretchable display device, comprising:

a lower substrate including a display area and a non-display area;

a plurality of lower connection lines on the lower substrate;

a plurality of first substrates on the display area, wherein the plurality of first substrates including sub pixels, and a modulus of the plurality of first substrates is larger than a modulus of the lower substrate;

a plurality of connection substrates connecting adjacent first substrates among the plurality of first substrates; and

a plurality of upper connection lines on the plurality of connection substrates.

2. The stretchable display device according to claim 1 , wherein the plurality of lower connection lines and the plurality of upper connection lines electrically connect adjacent first substrates among the plurality of first substrates.

3. The stretchable display device according to claim 1 , wherein the plurality of connection substrates is on the plurality of lower connection lines.

4. The stretchable display device according to claim 1 , wherein the plurality of lower connection lines, the plurality of connection substrates, and the plurality of upper connection lines overlap with each other.

5. The stretchable display device according to claim 4 , further comprising:

a plurality of first upper pads which are electrically connected to one end of the plurality of upper connection lines, respectively;

a plurality of second upper pads which are electrically connected to the other end of the plurality of upper connection lines, respectively;

a plurality of first lower pads which are electrically connected to one end of the plurality of lower connection lines, respectively which overlaps with the plurality of upper connection lines; and

a plurality of second lower pads which are electrically connected to the other end of the plurality of lower connection lines, respectively which overlap with the plurality of upper connection lines.

6. The stretchable display device according to claim 4 , further comprising:

a plurality of first pads and a plurality of second pads which are electrically connected to one end and the other end of the plurality of upper connection lines, respectively,

wherein one end and the other end of the plurality of lower connection lines which overlaps with the plurality of upper connection lines are electrically connected to the plurality of first pads and the plurality of second pads, respectively.

7. The stretchable display device according to claim 1 , further comprising:

a plurality of second substrates on the non-display area, wherein a modulus of the plurality of second substrates is larger than the modulus of the lower substrate,

wherein the plurality of connection substrates either connects adjacent second substrates among the plurality of second substrates or connects a first substrate among the plurality of first substrates and a second substrate among the plurality of second substrates which are adjacent to each other.

8. The stretchable display device according to claim 7 , wherein the plurality of lower connection lines and the plurality of upper connection lines either electrically connect adjacent second substrates among the plurality of second substrates or electrically connect a first substrate among the plurality of first substrates and a second substrate among the plurality of second substrates which are adjacent to each other.

9. The stretchable display device according to claim 1 , further comprising:

a plurality of inorganic insulating layers on the plurality of first substrates; and

an organic insulating layer on the plurality of first substrates so as to cover a top surface and a side surface of the plurality of inorganic insulating layers,

wherein the plurality of upper connection lines is on the organic insulating layer and the plurality of connection substrates.

10. A stretchable display device, comprising:

a flexible substrate having thereon a display area and a non-display area;

a plurality of substantially rigid substrates disposed in either the display area or the non-display area;

a plurality of connection substrates interposed among the plurality of rigid substrates and connecting the plurality of rigid substrates;

a plurality of lower connection lines disposed below the plurality of connection substrates; and

a plurality of upper connection lines disposed above the plurality of connection substrates so as to overlap with the plurality of lower connection lines.

11. The stretchable display device according to claim 10 , wherein the plurality of lower connection lines and the plurality of upper connection lines electrically connect adjacent rigid substrates among the plurality of rigid substrates.

12. The stretchable display device according to claim 10 , wherein the plurality of lower connection lines and the plurality of upper connection lines are configured to transmit different electrical signals.

13. The stretchable display device according to claim 10 , wherein the plurality of lower connection lines and the plurality of upper connection lines are configured to transmit substantially the same electrical signal.

14. The stretchable display device according to claim 10 , wherein a modulus of the plurality of rigid substrates is larger than a modulus of the flexible substrate.

15. A stretchable display device, comprising:

a flexible base substrate having formed thereon a display area and a non-display area adjacent to the display area;

a plurality of first substrates on the display area of the flexible base substrate, wherein each of the first substrate of the plurality of first substrates includes at least one subpixels, and each of the first substrate is spaced apart from each other;

a plurality of lower connection lines interposed between and connecting neighboring first substrates, the plurality of lower connection lines on the flexible base substrate;

a plurality of connection substrates on the plurality of lower connection lines, respectively; and

a plurality of upper connection lines on the plurality of connection substrates, respectively,

wherein a lower connection line of the plurality of lower connection lines has a first area, and an upper connection line of the plurality of upper connection lines has a second area equal to or smaller than the first area.

16. The stretchable display device according to claim 15 , wherein the plurality of upper connection lines have substantially the same shape as the plurality of connection substrates and the plurality of lower connection lines that overlap with each other.

17. The stretchable display device according to claim 15 , wherein a modulus of the plurality of first substrates is larger than a modulus of the flexible base substrate.

18. The stretchable display device according to claim 15 , wherein the plurality of lower connection lines and the plurality of upper connection lines are configured to transmit different electrical signals.

19. The stretchable display device according to claim 15 , wherein the plurality of lower connection lines and the plurality of upper connection lines are configured to transmit substantially the same electrical signal.