Stretchable display device

Patent metadata

Field	Value
Publication number	US-11765962-B2
Application number	US-202117374490-A
Country	US
Kind code	B2
Filing date	Jul 13, 2021
Priority date	Oct 4, 2018
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A stretchable display device according to an aspect of the present disclosure includes: a first substrate including an active area, a non-active area adjacent to the active area, and a pad area extending from a side of the non-active area; a plurality of second substrates are spaced apart from each other on the first substrate; and connecting lines electrically connecting pads disposed on the second substrates adjacent to each other of the plurality of second substrates. The plurality of second substrates includes a first set disposed in the non-active area, a second set disposed in the active area and a third set disposed in the pad area. Accordingly, a stretchable display device according to an aspect of the present disclosure may stretch throughout not only the active area, but also the non-active area and the pad area.

First claim

What is claimed is:

1. A stretchable display panel comprising:
a first substrate including an active area, a non-active area adjacent to the active area, and a pad area extending from a side of the non-active area, the pad area having a first pad area adjacent to the non-active area, a second pad area having a pad disposed therein, and a bending line as a reference defining between the first pad area and the second pad area;
a plurality of second substrates disposed on the first substrate, the plurality of second substrates including a first set disposed in the non-active area, a second set disposed in the active area, and a third set disposed in the pad area; and
connecting lines disposed on the first substrate, the connecting lines being electrically coupled to the pad disposed in the second pad area,
wherein the third set of the plurality of second substrates are disposed in the second pad area of the pad area,
wherein the first pad area is disposed between the non-active area and the second pad area, and
wherein the second pad area is bent towards the bottom surface of the first substrate along the bending line positioned between the first pad area and the second pad area.

2. The stretchable display panel of claim 1 ,
wherein the first set of the plurality of second substrates disposed in the non-active area and the third set of the plurality of second substrates disposed in the pad area are arranged in a row direction and a column direction that correspond to row direction and column direction of the second set of the plurality of second substrates disposed in the active area.

3. The stretchable display panel of claim 1 ,
wherein the first substrate is divided into a first area and a second area,
wherein the second substrates are disposed in the first area,
wherein the first area including the active area, the non-active area and the pad area,
wherein the second area is an area between the second substrates, and
wherein the second area adjacent to the region between second substrates disposed in the second pad area has a shape of which the width gradually decreases toward an outermost side of the first substrate.

4. The stretchable display panel of claim 1 , further comprising:
a gate driving circuit disposed in the non-active area,
wherein the gate driving circuit is configured in a Chip On Film (COF) type.

5. The stretchable display panel of claim 1 ,
wherein the first substrate and the second substrates have different elastic modulus, and
a elastic modulus of the second substrates is higher than a elastic modulus of the first substrate.

6. The stretchable display panel of claim 1 ,
wherein the connecting lines are straight.

7. The stretchable display panel of claim 1 ,
wherein the connecting lines are curved.

8. The stretchable display panel of claim 1 ,
wherein a Gate In Panel (GIP) type gate driving circuit is disposed on the plurality of second substrates that are disposed in the non-active area.

9. The display panel according to claim 1 , wherein the connecting line comprises:
a base polymer and conductive particles, and the base polymer is disposed in a single layer on the first substrate.

10. A stretchable display panel comprising:
a first substrate including an active area, a non-active area adjacent to the active area, and a pad area extending from a side of the non-active area;
a plurality of second substrates arranged on the first substrate, the plurality of second substrates including a first set disposed in the non-active area and a second set disposed in the active area;
connecting lines disposed on the first substrate, the connecting lines being electrically coupled to a pad disposed in the pad area; and
a dummy pixel disposed on at least one of the first set of plurality of second substrates disposed in the non-active area,
wherein at least one second substrate having the dummy pixel has a different size from the second substrates without the dummy pixel.

11. The stretchable display panel of claim 10 ,
wherein the at least one second substrate having the dummy pixel of the first set of the plurality of second substrates disposed in the non-active area has a shape of two individual substrates, and
the other substrates of the first set of plurality of second substrates without the dummy pixel of the plurality of second substrates disposed in the non-active area have a shape of one individual substrate.

12. The stretchable display panel of claim 11 ,
wherein different power lines are respectively disposed on two islands having the dummy pixel in the non-active area.

13. The stretchable display panel of claim 10 ,
wherein the at least one second substrate having the dummy pixel is larger in size than the second substrates disposed without the dummy pixel.

14. A stretchable display panel comprising:
a first substrate including an active area, a non-active area adjacent to the active area, and a pad area extending from a side of the non-active area, the pad area having a first pad area adjacent to the non-active area and a second pad area having a pad disposed therein;
a plurality of second substrates disposed on the first substrate, the plurality of second substrates including a first set disposed in the non-active area, a second set disposed in the active area, and a third set disposed in the pad area; and
connecting lines disposed on the first substrate, the connecting lines being electrically coupled to the pad disposed in the second pad area,
wherein the third set of the plurality of second substrates are disposed in the second pad area of the pad area,
wherein the first pad area is disposed between the non-active area and the second pad area, and
wherein the second pad area is bent towards the bottom surface of the first substrate.

15. The stretchable display panel of claim 14 ,
wherein a position at which the second pad area is bent towards the bottom surface of the first substrate is in the pad area between the first pad area and the second pad area.

16. The stretchable display panel of claim 14 ,
wherein the location of the position at which the second pad area is bent towards the bottom surface of the first substrate is called a bending line as a reference.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Seulki
• Ahn Jiyoung

Classifications

• H10D86/451

  characterised by the compositions or shapes of the interlayer dielectrics · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/443

  adapted for preventing breakage, peeling or short circuiting · CPC title

• H10H20/857

  Interconnections, e.g. lead-frames, bond wires or solder balls · CPC title

• H10H20/819

  characterised by their shape, e.g. curved or truncated substrates · CPC title