Rollable display device

Patent metadata

Field	Value
Publication number	US-9747822-B2
Application number	US-201514789078-A
Country	US
Kind code	B2
Filing date	Jul 1, 2015
Priority date	Dec 8, 2014
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A rollable display device includes a flexible display panel displaying an image, a housing accommodating the flexible display panel in a rolled state, the housing having a bent opening portion through which the flexible display panel is pulled out, and a grip attached to the flexible display panel, the grip pulling the flexible display panel out of the housing by an external force.

First claim

What is claimed is:

1. A rollable display device, comprising:
a flexible display panel displaying an image, the flexible display panel being rollable around a reel core to be in a rolled state;
a housing accommodating the flexible display panel in the rolled state, the housing having a bent opening portion through which the flexible display panel is pulled out; and
a grip attached to the flexible display panel, the grip pulling the flexible display panel out of the housing by an external force.

2. The rollable display device as claimed in claim 1 , wherein a radius of curvature of the pulled out display panel in an unrolled state is equal to that of the bent opening portion.

3. A rollable display device, comprising:
a flexible display panel displaying an image;
a housing accommodating the flexible display panel in a rolled state, the housing having a bent opening portion through which the flexible display panel is pulled out; and
a grip attached to the flexible display panel, the grip pulling the flexible display panel out of the housing by an external force,
wherein the bent opening portion includes:
a first opening portion line;
a second opening portion line spaced apart from the first opening portion line;
a third opening portion line connected to each of the first opening portion line and the second opening portion line; and
a fourth opening portion line connected to each of the first opening portion line and the second opening portion line, the fourth opening portion line being spaced apart from the third opening portion line,
wherein each of the first opening portion line and the second opening portion line is bent.

4. The rollable display device as claimed in claim 3 , wherein each of the first opening portion line and the second opening portion line is a curved line, and each of the third opening portion line and the fourth opening portion line is a portion of a straight line.

5. The rollable display device as claimed in claim 3 , wherein the first opening portion line has a first radius of curvature, and the second opening portion line has a second radius of curvature greater than the first radius of curvature.

6. The rollable display device as claimed in claim 3 , wherein the third opening portion line and the fourth opening portion line are parallel to each other.

7. The rollable display device as claimed in claim 1 , wherein the bent opening portion has a uniform width.

8. A rollable display device, comprising:
a flexible display panel displaying an image;
a housing accommodating the flexible display panel in a rolled state, the housing having a bent opening portion through which the flexible display panel is pulled out; and
a grip attached to the flexible display panel, the grip pulling the flexible display panel out of the housing by an external force,
wherein the grip has a bent coupling recess connected to the flexible display panel.

9. The rollable display device as claimed in claim 8 , wherein the coupling recess has a radius of curvature.

10. The rollable display device as claimed in claim 8 , wherein the flexible display panel includes:
an inner panel stored in the housing;
an external panel exposed outside of the housing; and
a connection panel connecting the inner panel to the external panel, each of the external panel and the connection panel being bent.

11. The rollable display device as claimed in claim 10 , wherein each of the external panel and the connection panel has a radius of curvature.

12. The rollable display device as claimed in claim 10 , wherein the external panel has a multi-radius curvature that gradually decreases from the grip toward the housing.

13. The rollable display device as claimed in claim 10 , wherein:
the connection panel passes through the opening portion, and
the external panel includes:
a first display panel coupled to the coupling recess, and
a second display panel connected to each of the connection display unit and the first display panel, each of the first display panel and the second display panel being bent.

14. The rollable display device as claimed in claim 13 , wherein:
the connection panel has a third radius of curvature,
the first display panel has a fourth radius of curvature, and
the second display panel has a fifth radius of curvature, the third radius of curvature being smaller than the fifth radius of curvature.

15. The rollable display device as claimed in claim 14 , wherein the third radius of curvature is smaller than the fourth radius of curvature, and the fifth radius of curvature is smaller than the fourth radius of curvature.

16. The rollable display device as claimed in claim 8 , wherein the coupling recess includes:
a first coupling recess line;
a second coupling recess line spaced apart from the first coupling recess line;
a third coupling recess line connected to each of the first coupling recess line and the second coupling recess line; and
a fourth coupling recess line connected to each of the first coupling recess line and the second coupling recess line, the fourth coupling recess line being spaced apart from the third coupling recess line, and each of the third coupling recess line and the fourth coupling recess line being bent.

17. The rollable display device as claimed in claim 16 , wherein each of the first coupling recess line and the second coupling recess line is a curved line, and each of the third coupling recess line and the fourth coupling recess line is a portion of a straight line.

18. The rollable display device as claimed in claim 16 , wherein the first coupling recess line has a sixth radius of curvature, and the second coupling recess line has a seventh radius of curvature greater than the sixth radius of curvature.

19. The rollable display device as claimed in claim 18 , wherein the sixth radius of curvature is greater than the first radius of curvature, and the seventh radius of curvature is greater than the second radius of curvature.

20. The rollable display device as claimed in claim 16 , wherein the third coupling recess line and the fourth coupling recess line are parallel to each other.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Junghun
• Kim Youn Joon
• Lee Sangjo
• Lee Jang Doo
• Lee Jusuck
• Jang Mi
• Choi Kyungmin

Classifications

• G09F9/301

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

• G06F1/1652

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

• G09F15/0056 Primary

  portable display standards · CPC title

• G09F11/29

  of a band other than endless · CPC title

• G09F9/00 Primary

  Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements (in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00) · CPC title