Display device

Patent metadata

Field	Value
Publication number	US-11335218-B2
Application number	US-201816768384-A
Country	US
Kind code	B2
Filing date	Oct 25, 2018
Priority date	Dec 7, 2017
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A display device includes a first rotation member configured to rotate, a second rotation member configured to rotate, the second rotation member being spaced apart from the first rotation member, a conveyance member that is extended between the first rotation member and the second rotation member, is configured to be conveyed between the first rotation member and the second rotation member in accordance with respective rotations of the first rotation member and the second rotation member, and has an inner surface and an outer surface, an abutting movement member that is disposed between the first rotation member and the second rotation member, and is configured to move to cause the conveyance member to be partially pushed up while being abutted against the inner surface, and a display member having flexibility that is attached to the outer surface, and displays an image using an organic light emitting phenomenon.

First claim

The invention claimed is:

1. A display device comprising:
a first rotation member configured to rotate;
a second rotation member configured to rotate, the second rotation member being spaced apart from the first rotation member;
a conveyance member that is extended between the first rotation member and the second rotation member, is configured to be conveyed between the first rotation member and the second rotation member in accordance with respective rotations of the first rotation member and the second rotation member, and has an inner surface and an outer surface;
an abutting movement member that is disposed between the first rotation member and the second rotation member, and is configured to move to cause the conveyance member to be partially pushed up while being abutted against the inner surface; and
a display member having flexibility that is attached to the outer surface, and displays an image using an organic light emitting phenomenon.

2. The display device according to claim 1 , wherein the display member includes
a flexible base, and
an image display layer that is supported by the flexible base and displays the image.

3. The display device according to claim 1 , further comprising:
a movement controller that controls movement of the abutting movement member; and
a tension detector that detects a tension of the conveyance member, wherein
the movement controller is configured to adjust a movement distance of the abutting movement member on a basis of the tension of the conveyance member detected by the tension detector.

4. The display device according to claim 1 , further comprising a conveyance controller that controls conveyance of the conveyance member in accordance with the respective rotations of the first rotation member and the second rotation member, wherein
in a state in which the abutting movement member is moved to cause the conveyance member to be partially pushed up while being abutted against the inner surface, the conveyance member includes an adjacent part that is adjacent to the abutting movement member and a non-adjacent part that is not adjacent to the abutting movement member, and
the conveyance controller is configured to adjust a conveyance distance of the conveyance member to cause the display member to be disposed on the non-adjacent part in accordance with the respective rotations of the first rotation member and the second rotation member.

5. The display device according to claim 4 , wherein, in a state in which the display member is disposed on the non-adjacent part, the conveyance controller is configured to adjust a position of the display member in a conveyance direction of the conveyance member in accordance with the respective rotations of the first rotation member and the second rotation member.

6. The display device according to claim 5 , wherein the non-adjacent part has a blank space to which the display member is not attached at at least one of upstream side or downstream side of the display member in the conveyance direction of the conveyance member.

7. The display device according to claim 1 , further comprising:
a movement controller that controls movement of the abutting movement member; and
an external force detector that detects, in a state in which the abutting movement member is moved to cause the conveyance member to be partially pushed up while being abutted against the inner surface, an external force to be supplied to the conveyance member, wherein
when the external force is detected by the external force detector, the movement controller is configured to adjust a movement distance of the abutting movement member to cause the conveyance member to bend, by moving the abutting movement member in a direction to be spaced apart from the inner surface.

8. The display device according to claim 1 , further comprising a support movement member that supports the first rotation member, the second rotation member, and the abutting movement member, and is configured to move in a direction that intersects a movement direction of the abutting movement member.

9. The display device according to claim 1 , further comprising a cleaning member that is disposed along a conveyance path of the conveyance member, and is configured to clean at least one of the inner surface or the outer surface.

10. The display device according to claim 1 , further comprising a storage member that stores the first rotation member, the second rotation member, the conveyance member, the abutting movement member, and the display member, wherein,
when the abutting movement member moves to cause the conveyance member to be partially pushed up while being abutted against the inner surface, the display member is configured to be drawn out from the storage member together with a portion of the abutting movement member and a portion of the conveyance member.

Assignees

• Sony Group Corp

Inventors

• Yamamoto Takeshi
• Araki Soya
• Tachikawa Yoshinori
• Azuma Yohei
• Eshita Yoichiro

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• G09F2011/0009

  Roller-band displays · CPC title

• G09F9/301 Primary

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

• G09F11/15

  the elements being flexible sheets · CPC title

• G06F1/1652

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