IP Library › Granted Patent US 10,856,426
Granted Patent B2
US 10,856,426 · App. 16/141,043 · Granted Dec 1, 2020

Rollable display device

Inventor: Yongjoon Jeon (Gyeonggi-do, KR)
Assignee: LG DISPLAY CO., LTD.
H05K5/0017G09F9/301H01L51/0097H05K5/0056H05K5/0217H05K5/03G02F1/133305G02F1/133308H01L27/3225H01L27/3276H01L51/5246H01L51/5259H01L2251/5338
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 10,856,426
App. No.
16/141,043
Granted
Dec 1, 2020
Kind
B2
Abstract

The present disclosure provides a rollable display device that can prevent a step between a roller and a display panel and can prevent damage to a printed circuit board and an IC etc. for driving and controlling the display panel, by forming a protrusion radially protruding on the outer side of the roller formed in a cylindrical shape for rolling the display panel and by forming a seat radially recessed on the outer side.

Claims (34)

1. A rollable display device comprising:

a display panel;

a roller formed in a cylindrical shape to roll the display panel, having a protrusion radially protruding from an outside, and having a seat radially recessed on an outer side, circumferentially connected to a side of the protrusion, and receiving a printed circuit board connected to an end of the display panel when the roller is rolled, and

a cover coupled to the outer side of the roller and the protrusion and covering the seat to form a space between the seat and the cover;

a damping member preventing damage to the printed circuit board and disposed on an inner side of the cover.

2. The rollable display device of claim 1 , wherein the protrusion of the roller has inlet/outlet holes at both sides circumferentially facing each other so that the printed circuit board is inserted into and drawn out of the seat.

3. The rollable display device of claim 2 , wherein the seat of the roller has a first end of an elastic member connected to an inner side circumferentially facing a side of the protrusion and a second end of the elastic member is coupled to the printed circuit board.

4. The rollable display device of claim 2 , wherein the seat of the roller has a first end of an elastic member connected to an inner side circumferentially facing a side of the protrusion, a second end of the elastic member is coupled to a sliding bar sliding on the outer side of the seat, and the sliding bar is coupled to the printed circuit board.

5. The rollable display device of claim 2 , wherein the seat of the roller has a first end of an elastic member is connected to an inner side circumferentially facing the side of the protrusion, a second end of the elastic member is coupled to a sliding bar sliding on the outer side of the seat, and the sliding bar is coupled to the printed circuit board through a fixing member.

6. The rollable display device of claim 4 , wherein the sliding bar is elongated in an axial direction of the roller.

7. The rollable display device of claim 6 , further comprising guide protrusions are formed on an inner side of the sliding bar and guide rails in which the guide protrusions of the sliding bar slide are circumferentially formed in the seat.

8. The rollable display device of claim 7 , further comprising a head supported by the inner side of the seat and preventing from separating from the guide rails formed at the end of each of the guide protrusion.

9. The rollable display device of claim 7 , wherein the guide protrusions and the guide rails are formed at least at both end portions of the roller.

10. The rollable display device of claim 7 , wherein the guide protrusions and the guide rails are formed at least at both end portions and a center of the roller.

11. The rollable display device of claim 1 , further comprising a plurality of back bars attached to a rear side of the display panel.

12. The rollable display device of claim 11 , wherein an end of the display panel and the back bars are supported by the protrusion when the roller is rolled.

13. A rollable display device comprising:

a rollable display panel;

a roller having a cylindrical shape on which the rollable display panel is rolled or unrolled on an outer side of the roller, wherein the roller has a protrusion radially protruding from an outside and a seat radially recessed on an outer side of the roller and circumferentially connected to a side of the protrusion;

a printed circuit board controlling the rollable display panel, disposed inside the roller and inserted into or drawn out of the roller when the display panel is rolled or unrolled;

a cover coupled to the outer side of the roller and the protrusion and covering the seat to form a space between the seat and the cover; and

a damping member preventing damage to the printed circuit board and disposed on an inner side of the cover,

wherein the seat receives the printed circuit board connected to an end of the display panel when the roller is rolled.

14. The rollable display device of claim 13 , wherein the protrusion of the roller has inlet/outlet holes at both sides circumferentially facing each other so that the printed circuit board is inserted into and drawn out of the seat.

15. The rollable display device of claim 14 , wherein the seat of the roller has a first end of an elastic member connected to an inner side circumferentially facing a side of the protrusion and a second end of the elastic member is coupled to the printed circuit board.

16. The rollable display device of claim 14 , wherein the seat of the roller has a first end of an elastic member connected to an inner side circumferentially facing a side of the protrusion, a second end of the elastic member is coupled to a sliding bar sliding on the outer side of the seat, and the sliding bar is coupled to the printed circuit board.

17. The rollable display device of claim 14 , wherein the seat of the roller has a first end of an elastic member is connected to an inner side circumferentially facing the side of the protrusion, a second end of the elastic member is coupled to a sliding bar sliding on the outer side of the seat, and the sliding bar is coupled to the printed circuit board through a fixing member.

18. The rollable display device of claim 17 , wherein the sliding bar is elongated in an axial direction of the roller.

19. The rollable display device of claim 18 , further comprising guide protrusions are formed on an inner side of the sliding bar and guide rails in which the guide protrusions of the sliding bar slide are circumferentially formed in the seat.

20. The rollable display device of claim 19 , further comprising a head supported by the inner side of the seat and preventing from separating from the guide rails formed at the end of each of the guide protrusion.

21. The rollable display device of claim 19 , wherein the guide protrusions and the guide rails are formed at least at both end portions of the roller.

22. The rollable display device of claim 19 , wherein the guide protrusions and the guide rails are formed at least at both end portions and a center of the roller.

23. The rollable display device of claim 13 , further comprising a plurality of back bars attached to a rear side of the rollable display panel.

24. The rollable display device of claim 23 , wherein an end of the rollable display panel and the back bars are supported by the protrusion when the roller is rolled.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 25, 2018
From: JEON, YONGJOON
To: LG DISPLAY CO., LTD.
Reel/Frame 046962/0648 →
Continuity (1)
Related Publication 20190098776A1 · Mar 28, 2019
Cited By (2)
US 1,130,402 US 12,656,828