Display device

Patent metadata

Field	Value
Publication number	US-10905019-B2
Application number	US-202016748123-A
Country	US
Kind code	B2
Filing date	Jan 21, 2020
Priority date	Sep 5, 2016
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

A display device is disclosed. The display device includes a housing, a plurality of rollers positioned inside the housing, a display unit including a display panel and a module cover having at least one apron, of which at least a portion is connected to each other, and a driver including a motor assembly, an upper bar coupled to an upper part of the display unit, and at least one support portion having one side coupled to both ends of the upper bar and the other side coupled to the motor assembly and moving up and down the upper bar. The display panel and the module cover are in a first state in which they are wound around the roller or a second state in which they are unwound from the roller, contact each other, and are exposed to the outside of the housing.

First claim

What is claimed is:

1. A display device comprising:
a housing;
a panel roller elongated inside the housing;
an auxiliary roller positioned inside the housing, opposite to the panel roller, and elongated along the panel roller;
a display unit including a display panel and a module cover, the display unit wound around the panel roller or unwound from the panel roller;
a motor assembly;
an upper bar coupled to an upper part of the display unit;
at least one support portion having one side coupled to an end of the upper bar and having another side coupled to the motor assembly, the at least one support portion moving the upper bar up and down with an operation of the motor assembly;
a protective sheet positioned inside the housing and being wound around the auxiliary roller when the display unit is unwound from the panel roller, the protective sheet being wound around the panel roller with the display unit when the display unit is wound around the panel roller; and
a guide assembly connected to the auxiliary roller and configured to support the display unit to prevent the display panel from being inclined, when the display unit wound around the panel roller or unwound from the panel roller.

2. The display device of claim 1 , wherein one end of the protective sheet is connected to the auxiliary roller, and another end of the protective sheet is connected to one end of the display panel.

3. The display device of claim 1 , wherein the protective sheet includes a nonwoven fabric.

4. The display device of claim 1 , wherein when the display panel is wound around the panel roller or unwound from the panel roller, a position of the auxiliary roller within the housing changes.

5. The display device of claim 4 , wherein a front surface of the display panel is closer to the auxiliary roller when the display panel is wound around the panel roller.

6. The display device of claim 5 , further comprising a rail inside the housing, wherein the auxiliary roller is movable along the rail.

7. The display device of claim 1 , wherein the guide assembly guides the auxiliary roller to move towards the front surface of the display panel when the display panel is wound around the panel roller.

8. The display device of claim 6 , wherein the guide assembly includes:
a guide arm of which one end is connected to the auxiliary roller; and
a tension spring of which one end is connected to another end of the guide arm.

9. The display device of claim 8 , wherein as the auxiliary roller moves, the guide arm rotates.

10. The display device of claim 9 , wherein as the auxiliary roller moves away from the front surface of the display panel, the guide arm rotates in a counterclockwise direction.

11. The display device of claim 8 , wherein as the guide arm rotates, a length of the tension spring changes.

12. The display device of claim 11 , wherein as the auxiliary roller moves away from the front surface of the display panel, the length of the tension spring increases.

13. The display device of claim 11 , wherein as the auxiliary roller moves closer to the front surface of the display panel, the length of the tension spring decreases.

14. The display device of claim 8 , wherein the guide assembly further includes a pin bolt that is positioned in a center of the guide arm and fixes the guide arm to the housing.

15. The display device of claim 14 , wherein an extending direction of the guide arm changes with respect to the pin bolt.

16. The display device of claim 14 , wherein when the display panel is unwound from the panel roller, the guide arm rotates around the pin bolt.

17. The display device of claim 8 , wherein the guide assembly further includes a supporter that is connected to the another end of the tension spring and is fixed to the housing.

18. The display device of claim 8 , wherein the tension spring includes a coil spring.

19. The display device of claim 18 , wherein the guide assembly further includes:
a fixed cap fixed to one end of the auxiliary roller and an one end of the coil spring; and
a rotating cap positioned at another end of the auxiliary roller and being rotatable, the rotating cap connected to an another end of the coil spring.

Assignees

• Lg Electronics Inc

Inventors

• Kim Hoyoung
• Kang Kitae
• Kim Dohyeon
• Noh Changwan

Classifications

• H05K5/0217 Primary

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

• B65H16/06 Primary

  both-ends type · CPC title

• G06F1/1652

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

• G06F1/1641

  the display being formed by a plurality of foldable display components (G06F1/1647 takes precedence) · CPC title

• G02F1/133305

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