Hinged support member and flexible display device including the same

Patent metadata

Field	Value
Publication number	US-10575415-B2
Application number	US-201815957347-A
Country	US
Kind code	B2
Filing date	Apr 19, 2018
Priority date	Sep 18, 2017
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

A display device includes first and second support members arranged along a first direction, a joint part therebetween, a hinge member adjacent to facing sides of the first and second support members that extends in a second direction crossing the first direction, and that includes two rotation axes, and a flexible display module on the first and second support members and the joint part. The joint part includes a first joint unit that extends in the second direction and a plurality of second joint units arranged in the first direction, where the first joint unit is interposed between the plurality of second joint units. The second joint units extend in the second direction, and each of the second joint units has recesses between side and top surfaces thereof and that extend in the second direction.

First claim

What is claimed is:

1. A display device, comprising:
a first support member and a second support member arranged along a first direction;
a joint part disposed between the first and second support members;
a hinge member adjacent to facing sides of the first and second support members and that extends in a second direction crossing the first direction, wherein the hinge member is connected to a bottom surface of the joint part and bottom surfaces of the first and second support members and includes two rotation axes that extend in a second direction that crosses the first direction; and
a flexible display module disposed on the first and second support members and the joint part,
wherein the joint part comprises:
a first joint unit that extends in the second direction; and
a plurality of second joint units arranged along the first direction and that extend in the second direction, wherein the first joint unit is disposed between the plurality of second joint units, and
each of the second joint units includes recesses between side and top surfaces thereof and that extend in the second direction,
the recesses are formed at both ends of an upper portion of the each of the second joint units, and the both ends are opposite to each other in the first direction.

2. The display device of claim 1 , wherein the first joint unit comprises:
a first extended portion that extends in the second direction; and
first sidewall portions that extend upward from both ends of the first extended portion.

3. The display device of claim 2 , wherein each of the second joint units comprises:
a second extended portion that extend in the second direction; and
second sidewall portions that extend upward from both ends of the second extended portion,
wherein the recesses are defined along edges between side and top surfaces of the second extended portion.

4. The display device of claim 3 , wherein the second sidewall portion has a reverse trapezoidal shape, when viewed from the second direction.

5. The display device of claim 3 , wherein the second extended portion comprises:
a first portion that extends in the second direction and that has a reverse trapezoidal shape when viewed from the second direction; and
a second portion that extends upward from a top surface of the first portion and that has a rectangular shape, and
wherein a width of the second portion is less than a width of the top surface of the first portion, when measured in the first direction.

6. The display device of claim 3 ,
wherein the first support member comprises:
a first bottom portion parallel to the first and second directions; and
a first guide portion that protrudes upward from sides of the first bottom portion except for a side adjacent to the joint part,

wherein the second support member comprises:
a second bottom portion parallel to the first and second directions; and
a second guide portion that protrudes upward from sides of the second bottom portion except for a side adjacent to the joint part,

wherein the display module is disposed on the first and second bottom portions and the first and second extended portions, and
a side surface of the display module is adjacent to inner side surfaces of the first and second guide portions and inner side surfaces of the first and second sidewall portions.

7. The display device of claim 6 , further comprising an adhesive member that attaches the display module to the first and second bottom portions and the first and second extended portions.

8. The display device of claim 3 , wherein each of the second joint units further comprises a joint insertion part that protrudes downward from a center portion of a bottom surface of the second extended portion and has a “L”-shaped section when viewed from the first direction,
wherein the hinge member comprises:
a plurality of first connection portions connected to a bottom surface of the first joint unit and arranged in the second direction; and
a plurality of second connection portions disposed below the first joint unit and between the first connection portions,

wherein the joint insertion parts of the second joint units are inserted into a rail groove provided in top surfaces of the second connection portions.

9. The display device of claim 8 , wherein each of the second connection portions comprises:
a body part that extends in the second direction and has shape of two parallel cylinders, each of which rotates about a corresponding one of the two rotation axes;
a sub-connection part that extends outward in the first direction from an outer curved surface of the body part on each side of the body part; and
elastic members disposed in the rail groove adjacent to the joint insertion parts of the second joint units adjacent to the first and second support members, and
wherein the sub-connection parts of the second connection portions are connected to a bottom surface of the first support member and a bottom surface of the second support member, respectively.

10. The display device of claim 9 , further comprising:
a third support member disposed below the first support member;
a fourth support member disposed below the second support member;
a plurality of first protruding portions that protrude from a side of the third support member that faces the fourth support member, each of the first protruding portions having a cylindrical structure that extends in the second direction;
and
a plurality of second protruding portions that protrude from a side of the fourth support member that faces a side of the third support member, each of the second protruding portions having a cylindrical structure that extends in the second direction, wherein the third and fourth support members are respectively connected to the bottom surfaces of the first and second support members and are configured to slide, and
the first and second connection portions are disposed between the first protruding portions and the second protruding portions.

11. The display device of claim 10 , further comprising:
a pair of hinge pin units that extend in the second direction; and
a pair of coupling units that correspond to the hinge pin units,
wherein the hinge pin units are inserted into first holes in the first and second protruding portions and that extend in the second direction, into second holes in the first connection portions and that extend in the second direction, and into third holes in the second connection portions and that extend in the second direction, and
the coupling units are connected to respective ends of the hinge pin units.

12. The display device of claim 3 , further comprising a dummy unit inserted into each of the recesses,
wherein the dummy unit comprises:
a first surface in contact with a correspond recess; and
a second surface opposite to the first surface,
wherein the second surface has a convex curved shape, and
the second surface and top, bottom, and side surfaces of the second extended portion are connected to each other to form a reverse trapezoidal shape.

13. The display device of claim 12 , further comprising a fluorine coating layer or an AF coating layer disposed on the second surface.

14. The display device of claim 12 , further comprising:
an adhesive member that attaches the display module to the top surface of the second extended portion; and
a coating layer that prevents the display module from attaching to other surfaces of the second extended portion.

15. The display device of claim 1 , wherein when the display module is folded out to externally expose a display surface of the display module, the fir

Assignees

• Samsung Display Co Ltd

Inventors

• Shin Jaiku

Classifications

• 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

• G06F1/1681

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

• H04N5/64

  Constructional details of receivers, e.g. cabinets or dust covers (furniture aspects {of television cabinets} A47B81/06) · CPC title

• H05K5/0226

  Hinges · CPC title