Display device

Patent metadata

Field	Value
Publication number	US-11985774-B2
Application number	US-202117218672-A
Country	US
Kind code	B2
Filing date	Mar 31, 2021
Priority date	Jul 31, 2020
Publication date	May 14, 2024
Grant date	May 14, 2024

Abstract

A display device includes a display module including a folding area, a plate which is under the display module and includes a bending portion corresponding to the folding area and a plurality of openings defined in the bending portion, a first plate and a second plate portion extending from opposing sides of the bending portion, a support layer which is under the bending portion and includes a first support member and a second support member spaced apart from each other, and a cushion layer including a first cushion member corresponding to the first plate portion and a second cushion member corresponding to the second plate portion. Each of the first support member and the second support member has a modulus greater than a modulus of each of the first cushion member and the second cushion member.

First claim

What is claimed is:

1. A display device comprising:
a display module comprising a folding area at which the display module is foldable;
a plate facing the display module, the plate comprising:
a bending portion corresponding to the folding area, and
a plurality of openings defined in the bending portion,
a first plate portion and a second plate portion extending from opposing sides of the bending portion in a direction away from the bending portion;

a support layer facing the display module with the plate therebetween, the support layer comprising a first support member and a second support member corresponding to the bending portion and spaced apart from each other at the bending portion; and
a cushion layer facing the display module with the plate therebetween, the cushion layer comprising:
a first cushion member corresponding to the first plate portion of the plate, and
a second cushion member corresponding to the second plate portion of the plate,

wherein
each of the first support member, the second support member, the first cushion member and the second cushion member has a modulus, and
each of the modulus of the first support member and the modulus of the second support member is greater than the modulus of the first cushion member and the modulus of the second cushion member.

2. The display device of claim 1 , further comprising:
a first support plate between the first plate portion of the plate and the first cushion member of the cushion layer; and
a second support plate between the second plate portion of the plate and the second cushion member of the cushion layer.

3. The display device of claim 1 , wherein
each of the first support member and the second support member has a modulus, and
the modulus of each of the first support member and the second support member is equal to or greater than about 1 gigapascal.

4. The display device of claim 1 , wherein the first support member and the second support member comprise polyethylene terephthalate, polyimide or polycarbonate.

5. The display device of claim 1 , wherein
the first support member and the second support member are spaced apart from each other along a first direction,
each of the first support member, the second support member and the bending portion has a width along the first direction, and
a sum of the width of the first support member and the width of the second support member is smaller than the width of the bending portion.

6. The display device of claim 1 , wherein
the first support member and the second support member are spaced apart from each other along a first direction, and
the plurality of openings are spaced apart from each other along the first direction.

7. The display device of claim 2 , further comprising a first adhesive member which is between the plate and the first and second support plates, wherein
the first adhesive member comprises a first adhesive layer, an auxiliary member and a second adhesive layer in order from the plate to the first and second support plates,
the first adhesive layer is in contact with each of the first plate portion, the bending portion and the second plate portion of the plate, and
the second adhesive layer comprise a plurality of adhesive patterns spaced apart from each other at the bending portion and respectively in contact with the first support plate and the second support plate and
an auxiliary member disposed between the first and second adhesive layers.

8. The display device of claim 7 , wherein
the plurality of adhesive patterns are spaced apart from each other along a first direction by a gap in the bending portion which defines a non-adhesive portion of the second adhesive layer,
each of the non-adhesive portion of the second adhesive layer and the bending portion of the plate has a width along the first direction, and
the width of the non-adhesive portion is equal to the width of the bending portion.

9. The display device of claim 2 , wherein
the support layer corresponds to the bending portion and faces the bending portion of the plate with the first and second support plates therebetween, and
the cushion layer and the support layer are coplanar with each other.

10. The display device of claim 9 , wherein
the first cushion member and the first support member both correspond to the first support plate, and
the second cushion member and the second support member both correspond to the second support plate.

11. The display device of claim 9 , wherein
each of the cushion layer and the support layer has a thickness, and
the thickness of the cushion layer is the same as the thickness of the support layer.

12. The display device of claim 9 , wherein
each of the plate, the support layer, and the first support plate and the second support plate has a thickness, and
the thickness of the support layer is greater than the thickness of the first support plate and the second support plate and smaller than the thickness of the plate.

13. The display device of claim 2 , further comprising a second adhesive member which corresponds to the first support plate and the second support plate,
wherein
the second adhesive member extends further from the first support plate and the second support plate than the cushion layer,
each of the support layer and the second adhesive member has a thickness, and
the thickness of the support layer is smaller than the thickness of the second adhesive member.

14. The display device of claim 2 , wherein each of the first support member and the second support member of the support layer is coplanar with each of the first support plate and the second support plate.

15. The display device of claim 14 , wherein
each of the support layer, the first and second support plates and the cushion layer has a thickness, and
the thickness of the support layer is the same as a sum of the thickness of the first and second support plates and the thickness of the cushion layer.

16. The display device of claim 15 , further comprising an insulating member which faces the first and second support plates with the cushion layer therebetween,
wherein each of the first support member and the second support member of the support layer contacts the insulating member.

17. The display device of claim 16 , wherein
each of the insulating member, the first support member and the second support member has a modulus, and
the modulus of the insulating member is the same as the modulus of the first support member or the modulus of the second support member.

18. The display device of claim 14 , wherein the first support member and the second support member respectively extends to define an extended portion which faces the first and second support plates with the cushion layer therebetween.

19. A display device comprising:
a display module comprising a folding area at which the display module is foldable, and a non-folding area which is adjacent to the folding area along a first direction;
a plate facing the display module, the plate comprising:
a bending portion corresponding to the folding area;
a plate portion corresponding to the non-folding area; and
a plurality of openings defined in the bending portion;

a first support plate facing the display module with the plate portion of the plate therebetween;
a first cushion member facing the plate portion of the plate with the first support plate therebetween; and
a first support member facing the display module with the bending portion of the plate therebetween,
wherein
each of the first

Assignees

• Samsung Display Co Ltd

Inventors

• Shin Jaiku
• Choi Sung Chul

Classifications

• H05K5/0217 Primary

  Mechanical details of casings (covers, lids, hoods or members for covering apertures H05K5/03) · CPC title

• G02F1/133305

  Flexible substrates, e.g. plastics, organic film · CPC title

• H05K5/0017

  with operator interface units · CPC title

• B32B3/266

  characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12 · CPC title

• B32B7/022

  Mechanical properties · CPC title