Display device

Patent metadata

Field	Value
Publication number	US-10588223-B2
Application number	US-201816141359-A
Country	US
Kind code	B2
Filing date	Sep 25, 2018
Priority date	Jul 7, 2015
Publication date	Mar 10, 2020
Grant date	Mar 10, 2020

Abstract

A display device that includes a housing with at least one Printed Circuit Board (PCB) and a plurality of rollers disposed in the housing. The display device also includes a display unit which, in turn, includes a display panel and a module cover. The display device further includes a driving unit that is connected to the display panel and the module cover. The driving unit moves the display panel and the module cover between a first state and a second state. In the first state, the panel and module cover are wound around at least one of the plurality of rollers, and in the second state they are unwound from the at least one of the plurality of rollers and exposed by being drawn out from the housing.

First claim

What is claimed is:

1. A display device comprising:
a housing;
a roller in the housing;
a display panel windable around the roller and having a front side and a rear side;
a module cover covering the rear side of the display panel;
a support link including:
a lower support link pivotally connected to the housing,
an upper support link pivotally connected to an upper part of the module cover, and
a joint pivotally connected to a lower part of the upper support link and pivotally connected to an upper part of the lower support link; and

a motor assembly installed in the housing,
wherein the motor assembly pivots the lower support link, and
wherein the motor assembly includes:
a motor on a bottom surface of the housing, and
a decelerator engaged with the motor to receive rotational energy from the motor.

2. The display device of claim 1 , further comprising:
an apron roller in the housing,
wherein the module cover is windable around the apron roller.

3. The display device of claim 1 , further comprising:
a second roller in the housing; and
a third roller in the housing and pressing the module cover,
wherein the module cover is windable around the second roller.

4. The display device of claim 1 , further comprising:
a magnet provided on the module cover,
wherein the display panel includes a metal material.

5. The display device of claim 1 , further comprising:
a top bar coupled to an upper portion of the module cover; and
a top case covering the top.

6. The display device of claim 1 , wherein a first gear is formed at an upper part of the lower support link and a second gear is formed at a lower part of the upper support link, and the first gear is engaged with the second gear.

7. The display device of claim 1 , further comprising:
an assist link providing the lower support link with pushing force,
wherein the assist link comprises:
a joint part pivotally connected to the lower support link;
a column member receiving the joint part and pivotally connected to the housing; and
a spring member in the column member and providing the joint part with pushing force.

8. The display device of claim 1 , further comprising:
a pinion gear; and
a motor in the housing, the motor driving the pinion gear,
wherein the module cover includes a rack gear at a rear surface of the module cover, and
wherein the pinion gear is engaged with the rack gear.

9. The display device of claim 1 , further comprising:
an elastic piece; and
an insertion guide installed in the housing, the insertion guide supporting the elastic piece,
wherein the module cover comprises:
a groove formed on a rear surface of the module cover; and
a fixing member protrude on the groove,
wherein the elastic piece is positioned in the groove and supported by the fixing member.

10. The display device of claim 1 , further comprising:
a timing controller board,
wherein the roller comprises:
a top; and
a bottom coupled to the top,
wherein the timing controller board is between the top and the bottom.

11. The display device of claim 10 , wherein the top is elongated in the housing and the bottom is elongated along the top.

12. The display device of claim 10 , further comprising:
an extension sheet connecting the roller and the display panel;
a source PCB on the extension sheet; and
a FFC cable connecting the timing controller board and the source PCB,
wherein a settling part is formed at the roller, and
wherein the source PCB is seated in the settling part.

13. The display device of claim 12 , wherein the top includes a settling part depressed and extends along a longitudinal direction of the top.

14. The display device of claim 13 , wherein the source PCB is received in the settling part when the display module is wound around the roller.

15. The display device of claim 10 , further comprising:
a power supply;
main board;
a first wiring electrode connecting the power supply and the timing controller board; and
a second wiring electrode connecting the main board and the timing controller board.

16. The display device of claim 1 , further comprising:
a guide rail in the housing;
a moving roller movable on the guide rail;
a supporting member coupled to an upper portion of the module cover; and
arm parts connecting the supporting member and the moving roller.

17. The display device of claim 1 , wherein the decelerator is covered by a first cover which is different from a second cover for the motor.

18. The display device of claim 1 , wherein if the motor rotates in a direction, the decelerator rotates in the same direction.

19. The display device of claim 1 , wherein the lower support link is connected to the decelerator directly.

20. The display device of claim 19 , wherein if the decelerator rotates in a direction, an angle of the lower support link with respect to the ground changes according to the direction.

21. The display device of claim 1 , wherein the motor assembly includes a first motor assembly and a second motor assembly, and
wherein the first motor assembly is installed on one side corner of the bottom surface of the housing,
wherein the second motor assembly is installed on the other side corner of the bottom surface of the housing.

Assignees

• Lg Electronics Inc

Inventors

• Han Jihoon
• Kang Kitae
• Heo Jinha
• Kim Dohyeon
• Ryu Hyunjong
• Kim Jaeho
• Ryu Inkeun
• Choi Namhyeon

Classifications

• G09F9/301 Primary

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

• H05K5/03

  Covers · CPC title

• G09F15/0062

  collapsible · CPC title

• G09F9/33 Primary

  being semiconductor devices, e.g. diodes · CPC title

• H05K1/028

  Bending or folding regions of flexible printed circuits (H05K1/0283 takes precedence) · CPC title