Rollable display device

Patent metadata

Field	Value
Publication number	US-9788440-B2
Application number	US-201615356074-A
Country	US
Kind code	B2
Filing date	Nov 18, 2016
Priority date	Jul 22, 2014
Publication date	Oct 10, 2017
Grant date	Oct 10, 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 having a curved surface on which the flexible display panel is selectively wound and unwound, the roller having a slit extending longitudinally along the curved surface of the roller, the slit being the only slit extending longitudinally along the curved surface from a first end of the roller to a second end of the roller;
a printed circuit board configured to control an operation of the flexible display panel, and located within the roller;
a case configured to house the roller;
an elevating mechanism configured to extend the flexible display panel from the case, and including a guide rail and a first link configured to elevate the guide rail; and
a first guide bracket connected to the first link, the first guide bracket including a first rotational link portion rotatably connected to the first link.

2. The display device of claim 1 , wherein the first guide bracket is configured to move linearly along the guide rail without rotating.

3. The display device of claim 1 , further comprising a second link and a second guide bracket,
wherein the first guide bracket is located at one end of the first link and movable along the guide rail, and
wherein the second guide bracket is located at one end of the second link and movable along the guide rail.

4. The display device of claim 3 , wherein the first link and the second link are rotatable in opposite directions to move the first guide bracket and the second guide bracket linearly along the guide rail.

5. The display device of claim 1 , wherein the guide rail is attached to the flexible display panel.

6. The display device of claim 1 , wherein the first guide bracket is located at one end of the first link and movable along the guide rail.

7. The display device of claim 1 , wherein the first guide bracket includes a guide portion located within the guide rail, and
wherein the first rotational link portion extends from the guide portion.

8. The display device of claim 7 , further comprising a second link and a second guide bracket,
wherein the first rotational link portion of the first guide bracket is rotatably connected to the first link, and a second rotational link portion of the second guide bracket is rotatably connected to the second link.

9. The display device of claim 8 , wherein the first link and the second link are rotatable in opposite directions, and
wherein the first guide bracket and the second guide bracket are configured to move linearly along the guide rail without rotating.

10. A display device comprising:
a flexible display panel;
a roller having a curved surface on which the flexible display panel is selectively wound and unwound;
a printed circuit board configured to control an operation of the flexible display panel, and located within the roller; and
a connecting unit configured to connect the flexible display panel to the printed circuit board, and disposed between the flexible display panel and the printed circuit board,
wherein the roller includes a slit extending longitudinally along the curved surface of the roller, the slit being the only slit extending longitudinally along the curved surface from a first end of the roller to a second end of the roller, and
wherein the connecting unit includes a flexible printed circuit (FPC) or a tape carrier package (TCP).

11. The display device of claim 10 , wherein the connecting unit is inserted into the slit of the roller.

12. The display device of claim 11 , wherein the connecting unit extends generally radially with respect to the roller.

13. The display device of claim 12 , wherein the connecting unit comprises a plurality of discrete FPC elements or TCP elements spaced apart from one another and spaced inwardly of opposite edges of the flexible display panel.

14. The display device of claim 13 , further comprising adhesive means configured to attach an edge portion of the flexible display panel to an outer surface of the roller.

15. The display device of claim 14 , wherein the adhesive means comprises an adhesive resin or an adhesive double-sided tape.

16. The display device of claim 10 , further comprising adhesive means configured to attach an edge portion of the flexible display panel to an outer surface of the roller.

17. The display device of claim 16 , wherein the adhesive means comprises an adhesive resin.

18. The display device of claim 16 , wherein the adhesive means comprises an adhesive double-sided tape.

19. The display device of claim 10 , wherein the connecting unit comprises a plurality of discrete FPC elements or TCP elements spaced apart from one another.

20. The display device of claim 10 , wherein the connecting unit is spaced inwardly of opposite edges of the flexible display panel.

Assignees

• Lg Display Co Ltd

Inventors

• Cho Seok-Hyo
• Park Chul

Classifications

• H04M1/0268

  including a flexible display panel · 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

• B65H75/4402

  Guiding arrangements to control paying-out and re-storing of the material (guides per se B65H57/00) · CPC title

• H05K2201/051

  Rolled · CPC title