Rollable display device

Patent metadata

Field	Value
Publication number	US-9629237-B2
Application number	US-201514755965-A
Country	US
Kind code	B2
Filing date	Jun 30, 2015
Priority date	Jul 22, 2014
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A rollable display device includes a display panel for displaying an image, a printed circuit board connected to an edge of the display panel, and a roller which the display panel is rolled onto or unrolled from. The roller has a cylindrical shape having an inner space, and the printed circuit board is disposed in the inner space.

First claim

What is claimed is:

1. A display device comprising:
a flexible display panel;
a roller on which the flexible display panel is selectively wound and unwound, the roller having:
a curved surface having a first end and a second end; and
a slit extending longitudinally along the curved surface of the roller, the slit being located between a first sidewall portion of the roller and a second sidewall portion of the roller, the second sidewall portion facing the first sidewall portion to define the slit therebetween, at least a portion of the roller extending continuously along the circumference of the roller from the first sidewall portion to the second sidewall portion with the slit therebetween, wherein the slit is the only slit extending longitudinally along the curved surface of the roller from the first end of the curved surface to the second end of the curved surface; and

a printed circuit board connected to the flexible display panel, the printed circuit board being located within the roller.

2. The display device of claim 1 , wherein the roller is configured to rotate about an axis of rotation, and the slit extends parallel to the axis of rotation.

3. The display device of claim 1 , further comprising a connector interconnecting one end of the flexible display panel to the printed circuit board.

4. The display device of claim 3 , wherein the connector is located within the slit.

5. The display device of claim 1 , further comprising a pin connecting the printed circuit board to the roller.

6. A display device comprising:
a flexible display panel;
a roller on which the flexible display panel is selectively wound and unwound, the roller having:
a curved surface having a first end and a second end; and
a slit extending longitudinally along the curved surface of the roller, the slit being located between a first sidewall portion of the roller and a second sidewall portion of the roller, the second sidewall portion facing the first sidewall portion to define the slit therebetween, at least a portion of the roller extending uninterrupted from the first sidewall portion to the second sidewall portion;

a printed circuit board connected to the flexible display panel, the printed circuit board being located within the roller; and
a pin connecting the printed circuit board to the roller,
wherein the pin has a first end located in a through hole provided in the roller,
wherein the pin extends through a pin hole provided in the printed circuit board, and
wherein the pin has a second end located in a pin receiving portion provided in the roller.

7. The display device of claim 6 , wherein the pin receiving portion is a fixing groove provided in the roller.

8. The display device of claim 1 , wherein the roller is a circular cylinder.

9. The display device of claim 1 , wherein the curved surface of the roller forms a tube having a hollow interior, and
wherein the slit extends through the curved surface of the roller to the hollow interior.

10. The display device of claim 9 ,
wherein the roller is configured to rotate about an axis of rotation, and the slit extends parallel to the axis of rotation.

11. The display device of claim 9 , further comprising:
a case, the roller being located within the case; and
an elevating mechanism configured to extend the flexible display panel from the case, including:
a guide rail attached to the flexible display panel; and
a first link configured to elevate the guide rail.

12. The display device of claim 11 , further comprising a first guide bracket located at one end of the first link and movable along the guide rail.

13. The display device of claim 11 , further comprising a second link configured to elevate the guide rail.

14. The display device of claim 13 , further comprising:
a first guide bracket located at one end of the first link and movable along the guide rail; and
a second guide bracket located at one end of the second link and movable along the guide rail.

15. The display device of claim 14 , wherein the first guide bracket and the second guide bracket each include:
a guide portion located within the guide rail; and
a rotational link portion extending from the guide portion,
wherein the rotational link portion of the first guide bracket is rotatably connected to the first link, and the rotational link portion of the second guide bracket is rotatably connected to the second link.

16. The display device of claim 15 , further comprising a fixing bracket to which the guide rail is attached,
wherein the fixing bracket includes a fixing portion having an inserting hole into which one end of the flexible display panel is inserted.

17. The display device of claim 11 , further comprising a fixing bracket provided at one end of the flexible display panel.

18. The display device of claim 17 , wherein the guide rail is attached to the fixing bracket.

19. A display device comprising:
a flexible display panel;
a roller on which the flexible display panel is selectively wound and unwound, the roller having:
a curved surface having a first end and a second end; and
a slit extending longitudinally along the curved surface of the roller, the slit being located between a first sidewall portion of the roller and a second sidewall portion of the roller, the second sidewall portion facing the first sidewall portion to define the slit therebetween, at least a portion of the roller extending uninterrupted from the first sidewall portion to the second sidewall portion,
wherein the curved surface of the roller forms a tube having a hollow interior, and
wherein the slit extends through the curved surface of the roller to the hollow interior.

a printed circuit board connected to the flexible display panel, the printed circuit board being located within the roller;
a case, the roller being located within the case;
an elevating mechanism configured to extend the flexible display panel from the case, including:
a guide rail attached to the flexible display panel; and
a first link configured to elevate the guide rail; and

a fixing bracket provided at one end of the flexible display panel,
wherein the fixing bracket includes a fixing portion having an inserting hole into which the one end of the flexible display panel is inserted.

Assignees

• Lg Display Co Ltd

Inventors

• Cho Seok-Hyo
• Park Chul

Classifications

• H04M1/0268

  including a flexible display panel · CPC title

• B65H75/28

  Arrangements for positively securing ends of material · CPC title

• G09F15/0062

  collapsible · CPC title

• H05K1/147

  at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit (H05K1/148 takes precedence) · CPC title

• B65H2301/3611

  centering, positioning material symmetrically relatively to a given axis of displacement · CPC title