Foldable display device

Patent metadata

Field	Value
Publication number	US-11076499-B2
Application number	US-201916654741-A
Country	US
Kind code	B2
Filing date	Oct 16, 2019
Priority date	Nov 30, 2018
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

Disclosed is a display device including first and second set frames arranged adjacent to each other, a panel arranged on the first and second set frames, and a folding hinge unit arranged between the first set frame and the second set frame. The folding hinge unit includes a plurality of chain hinges arranged between the first and second set frames and configured to fold the first and second set frames inward and outward, and an X hinge including first and second connection chains coupled to the chain hinges and configured to control a folding trajectory of the chain hinges.

First claim

What is claimed is:

1. A foldable display device comprising:
first and second set frames arranged adjacent to each other;
a panel arranged on the first and second set frames; and
a folding hinge unit arranged between the first set frame and the second set frame,
wherein the folding hinge unit comprises:
a plurality of chain hinges arranged between the first and second set frames and configured to fold the first and second set frames inward and outward; and
an X hinge comprising first and second connection chains directly coupled to a same side of the chain hinges and configured to control a folding trajectory of the chain hinges,
wherein the first connection chain and the second connection chain are not directly connected to each other.

2. The foldable display device according to claim 1 , wherein central regions of the plurality of chain hinges are connected so that the plurality of chain hinges are rotatable with respect to each other.

3. The foldable display device according to claim 2 , wherein each of the plurality of chain hinges has a shape having a width that gradually decreases from a convex central region thereof to tapered upper and lower regions thereof.

4. The foldable display device according to claim 3 , wherein the first connection chain and the second connection chain have a same length.

5. The foldable display device according to claim 4 , wherein the first connection chain comprises:
a first fixing pin connected to a first chain hinge from the plurality of chain hinges at a fixed location in the first chain hinge, the first fixing pin located at a position closer to the first set frame than the second set frame;
a second fixing pin connected to a second chain hinge from the plurality of chain hinges at a fixed location in the second chain hinge, the second fixing pin located at a position closer to the second set frame than the first set frame; and
a first connector connected to the first fixing pin and the second fixing pin.

6. The foldable display device according to claim 5 , wherein the second connection chain comprises:
a third fixing pin connected to a third chain hinge from the plurality of chain hinges at a fixed location in the third chain hinge, the third fixing pin located at a position closer to the first set frame than the second set frame;
a fourth fixing pin connected to a fourth chain hinge from the plurality of chain hinges at a fixed location in the fourth chain hinge, the fourth fixing pin located at a position closer to the second set frame than the first set frame; and
a second connector connected to the third fixing pin and the fourth fixing pin.

7. The foldable display device according to claim 6 , wherein the position of the first fixing pin is closer to the first set frame than the position of the third fixing pin, and the position of the fourth fixing pin is closer to the second set frame than the position of the second fixing pin.

8. The foldable display device according to claim 7 , wherein the first to fourth fixing pins are coupled to upper regions of corresponding chain hinges.

9. The foldable display device according to claim 1 , wherein the plurality of chain hinges and the X hinge are formed of metal.

10. The foldable display device of claim 1 , wherein at least one of the first connection chain or the second connection chain overlaps more than two of the plurality of chain hinges while the foldable display device is in a folded state or the foldable display device is in an unfolded state.

Assignees

• Lg Display Co Ltd

Inventors

• Jeon Seung-O
• Yun Young-Joon
• Lee Shin-Suk

Classifications

• H05K5/0226 Primary

  Hinges · CPC title

• G09F9/301 Primary

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

• G06F1/1681

  Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683) · CPC title

• H10K77/111 Primary

  Flexible substrates · CPC title

• G06F1/1616

  with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position · CPC title