Stretchable display panel and stretchable display device including the same

Patent metadata

Field	Value
Publication number	US-11714457-B2
Application number	US-202217665484-A
Country	US
Kind code	B2
Filing date	Feb 4, 2022
Priority date	Dec 21, 2018
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

A display device includes a lower substrate that includes a first substrate, and a plurality of second substrates on the first substrate. The plurality of second substrates have higher rigidity than a rigidity of the first substrate. The plurality of second substrates may be spaced apart from each other. The lower substrate also includes one or more light emitting elements disposed on each of the plurality of second substrates.

First claim

What is claimed:

1. A stretchable display device comprising:
a lower substrate including:
a first substrate, and
a plurality of second substrates on the first substrate, the plurality of second substrates having higher rigidity than a rigidity of the first substrate, the plurality of second substrates spaced apart from each other;
one or more light emitting elements disposed on each of the plurality of second substrates; and
one or more suppression patterns on the first substrate, the one or more suppression patterns disposed in spaces between the plurality of second substrates.

2. The stretchable display device of claim 1 , wherein the one or more suppression patterns have higher rigidity than the rigidity of the first substrate.

3. The stretchable display device of claim 2 , wherein a suppression pattern in the one or more suppression patterns includes a first rigid portion and a second rigid portion on the first rigid portion, the second portion having higher rigidity than a rigidity of the first rigid portion.

4. The stretchable display device of claim 1 , wherein the one or more suppression patterns have a curvy shape.

5. The stretchable display device of claim 1 , wherein the plurality of second substrates include:
a row of second substrates arranged along a first direction; and
a column of second substrates arranged along a second direction intersecting the first direction, and
wherein the one or more suppression patterns extend along a third direction between the first direction and the second direction.

6. The stretchable display device of claim 1 , further comprising:
a connecting line on the lower substrate, the connecting line extending between a pair of second substrates, and
wherein the one or more suppression patterns include a plurality of suppression patterns disposed along the connecting line.

7. The stretchable display device of claim 1 , wherein a size of each of the one or more suppression patterns is smaller than the size of each of the plurality of second substrates.

8. The stretchable display device of claim 1 , further comprising:
metal patterns disposed on the one or more suppression patterns.

9. The stretchable display device of claim 8 , wherein the metal patterns are etch stoppers of the one or more suppression patterns.

10. The stretchable display device of claim 1 , wherein the one or more suppression patterns are made of a material having a higher modulus than the first substrate.

11. The stretchable display device of claim 1 ,
wherein a plurality of pixel areas including a rigid area where at least one of the second substrate is disposed and a flexible area surrounding the rigid area are defined on the first substrate, and
the one or more suppression patterns are disposed in a boundary area of the pixel areas.

12. The stretchable display device of claim 11 ,
wherein the one or more suppression patterns are disposed at corners of each of the plurality of pixel areas.

Assignees

• Lg Display Co Ltd

Inventors

• Ahn Jiyoung
• Kim Seulki

Classifications

• H10H29/142

  Two-dimensional arrangements, e.g. asymmetric LED layout · CPC title

• G06F1/1652 Primary

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• G06F1/1626

  with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs] · CPC title

• G09F9/301 Primary

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• H10K2102/311

  Flexible OLED · CPC title