Rollable display

Patent metadata

Field	Value
Publication number	US-10257945-B2
Application number	US-201715404155-A
Country	US
Kind code	B2
Filing date	Jan 11, 2017
Priority date	Apr 29, 2016
Publication date	Apr 9, 2019
Grant date	Apr 9, 2019

Abstract

A rollable display includes a flexible display panel where pixels are arranged to display an image; a reinforcing structure that is bonded to the rear side of the flexible display panel and divided into a plurality of segments; a roller that is bonded to one end of the flexible display panel and allows the flexible display panel to be rolled around the circumference; a data PCB (printed circuit board) located on the rear side of the flexible display panel; a first connecting member that connects the data PCB to the flexible display panel; a control board accommodated in the internal space of the roller; and a second connecting member that connects the control board to the data PCB, wherein each of the segments of the reinforcing structure comprises a through hole into which the second connecting member is slidably inserted.

First claim

What is claimed is:

1. A rollable display comprising:
a flexible display panel with pixels to display an image on a front side of the flexible display panel;
a reinforcing structure attached to a rear side of the flexible display panel and comprising a plurality of segments having at least one through hole in a first direction;
a roller attached to one end of the flexible display panel and having a circumference surface onto which the flexible display panel is rolled, the roller rotatable about an axis extending in a second direction perpendicular to the first direction;
a printed circuit board on the flexible display panel;
a control board in the roller; and
a connecting member that electrically connects the control board to the printed circuit board to transmit signals for displaying images on the flexible display panel, the connecting member slidably inserted into the through hole.

2. The rollable display of claim 1 , further comprising an auxiliary sheet between an end of the flexible display panel to the roller to couple the flexible display panel to the roller.

3. The rollable display of claim 1 , wherein each of the segments has a shape of a bar that extends in a first direction and is arranged side by side in the second direction.

4. The rollable display of claim 3 , wherein adjacent segments are spaced apart by a set distance.

5. The rollable display of claim 1 , wherein a buffering member provided in at least part of an inside surface of a through hole of a segment.

6. The rollable display of claim 1 , wherein each of the segments comprises an attaching surface bonded to the flexible display panel, and an attached surface opposite the attaching surface, wherein a surface between the attaching surface and the attached surface has a predetermined curvature.

7. The rollable display of claim 1 , wherein each of the segments comprises an attaching surface bonded to the flexible display panel, and an attached surface opposite the attaching surface, wherein the rollable display further comprises a buffering member bonded to the attached surface.

8. The rollable display of claim 1 , wherein at least one of the segments further comprises a recess having a shape of a hole or the shape of a groove.

9. The rollable display of claim 1 , further comprising at least another connecting member, wherein each of the segments of the reinforcing structure comprises at least another through hole, wherein at least another connecting member is inserted into the at least another through hole.

10. The rollable display of claim 1 , further comprising an adhesive member that fixes part of the connecting member to at least one side of the control board.

11. The rollable display of claim 1 , further comprising:
a support block provided between the flexible display panel and the printed circuit board; and
a cover holder that is bonded to the support block and accommodates part of the connecting member.

12. The rollable display of claim 1 , wherein each of the segments comprises:
a front case bonded to the rear side of the flexible display panel;
a rear case placed opposite the front case; and
at least one middle case placed between the front case and the rear case,
wherein a through hole is an internal space between the front case, rear case, and middle case.

13. The rollable display of claim 1 , wherein each of the segments is attached to a rear surface of the flexible display panel via one or more adhesive films.

14. The rollable display of claim 1 , wherein a substrate of the flexible display panel comprises a first section of a first thickness and a second section of a second thickness thicker than the first thickness, the second section provided at an end of the flexible display panel that is located away from the roller.

15. The rollable display of claim 1 , wherein the flexible display panel includes a glass substrate and a metal substrate, and the metal substrate having a larger area than the glass substrate.

16. A rollable display comprising:
a flexible display panel with pixels to display an image on a front side of the flexible display panel;
a reinforcing structure attached to a rear side of the flexible display panel and comprising a plurality of segments;
a roller attached to one end of the flexible display panel and having a circumference surface onto which the flexible display panel is rolled;
a printed circuit board on the flexible display panel;
a control board in the roller;
a connecting member that electrically connects the control board to the printed circuit board to transmit signals for displaying images on the flexible display panel, and
at least one buffer member attached to the reinforcing structure on a surface of the reinforcing structure facing away from the flexible display panel,
wherein a substrate of the flexible display panel comprises a first section of a first thickness and a second section of a second thickness thicker than the first thickness, the second section provided at an end of the flexible display panel that is located away from the roller.

17. The rollable display of claim 16 , wherein the at least one buffer member is a foam tape or a foam board.

18. The rollable display of claim 16 , further comprising an auxiliary sheet between an end of the flexible display panel to couple the flexible display panel to the roller.

19. The rollable display of claim 16 , wherein the flexible display panel includes a glass substrate and a metal substrate, and the metal substrate having a larger area than the glass substrate.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Jeonghun
• Kim Bongchul
• Park Jaewook

Classifications

• H05K1/189

  characterised by the use of flexible or folded printed circuits · CPC title

• H05K2201/10128

  Display · CPC title

• G06F1/1652

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

• G09F9/301 Primary

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

• H05K1/147 Primary

  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