Stretchable display device

• US 9,532,430 B2
• Filed: 09/23/2015
• Issued: 12/27/2016
• Est. Priority Date: 01/09/2015
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Choi, Hae Yun, Shim, Hong Shik, Kim, Young Chan
• Primary Examiner(s): Patel, Vip
• Application Number:
  US14/862,176
• Publication Number:
  US 20160205743A1
• Time in Patent Office: 461 Days
• Field of Search: 313/506, 313/498, 313/504
• US Class Current: 1/1
• CPC Class Codes: G02B 26/0825 the reflecting element being a flexible sheet or membrane, e.g. for varying the focus flexible mirrors for cosmetic use A45D42/24
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H05B 33/22 characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers

Abstract

A stretchable display device includes: a stretchable substrate; a plurality of light emitting units on the stretchable substrate; and a plurality of reflective mirrors positioned to correspond to the light emitting units, respectively, and reflecting light emitted from the light emitting units, respectively.

Claims

1. A stretchable display device, comprising:

a stretchable substrate;

a plurality of light emitting units on the stretchable substrate; and

a plurality of reflective mirrors positioned to correspond to the light emitting units, respectively, and reflecting light emitted from the light emitting units, respectively, wherein the reflective mirrors are respectively stretchable.

2. The stretchable display device as claimed in claim 1, wherein the reflective mirrors stretch in proportion to a degree of stretching of the stretchable substrate, respectively.

3. The stretchable display device as claimed in claim 2, wherein the reflective mirrors are in the stretchable substrate.

4. The stretchable display device as claimed in claim 1, wherein the reflective mirrors have curved reflective sides facing the light emitting units.

5. The stretchable display device as claimed in claim 4, wherein a curvature of the curved reflective sides of the reflective mirrors increases in proportion to a degree of stretching of the stretchable substrate.

6. The stretchable display device as claimed in claim 4, wherein the reflective sides are concave with respect to the light emitting units.

7. The stretchable display device as claimed in claim 4, wherein the reflective sides are convex toward the light emitting units.

8. The stretchable display device as claimed in claim 1, wherein:

the light emitting units are respectively arranged in a matrix on the stretchable substrate and make an image, and

the reflective mirrors are respectively arranged in a matrix on the stretchable substrate.

9. The stretchable display device as claimed in claim 1, wherein the light emitting units include an organic light emitting element.

10. The stretchable display device as claimed in claim 1, wherein the reflective mirrors are larger than the light emitting units.

11. The stretchable display device as claimed in claim 10, wherein the reflective mirrors extends beyond the light emitting units in two directions orthogonal to a stacking direction of the light emitting units and the reflective mirrors even when unstretched.

12. The stretchable display device as claimed in claim 1, wherein the reflective mirrors completely overlap the corresponding light emitting unit.

13. The stretchable display device as claimed in claim 1, wherein a vertex of the reflective mirrors is centered with the corresponding light emitting unit.

14. The stretchable display device as claimed in claim 13, wherein the vertex is centered when the stretchable substrate is stretched and when the stretchable substrate is unstretched.

15. The stretchable display device as claimed in claim 1, wherein the stretchable reflective mirrors are spaced apart from the light emitting units.