Organic EL display device

Patent metadata

Field	Value
Publication number	US-10726748-B2
Application number	US-201716301944-A
Country	US
Kind code	B2
Filing date	Jul 14, 2017
Priority date	Jul 21, 2016
Publication date	Jul 28, 2020
Grant date	Jul 28, 2020

Abstract

A display device includes: a display panel which is flexible, and including a pair of flat portions held in a flat state, and a bending portion provided between the pair of the flat portions and held to be bendable; a first support supporting one of the pair of the flat portions in a flat state; a second support supporting the other of the pair of the flat portions in a flat state; and a joint joining the first support and the second support together. The joint is flexible and provided not to interfere with the bending portion.

First claim

The invention claimed is:

1. A display device comprising:
a display panel which is flexible, the display panel including a pair of flat portions held flat, and a bending portion provided between the pair of the flat portions and held to be bendable;
a first support supporting one of the pair of the flat portions in a flat state;
a second support supporting another one of the pair of the flat portions in a flat state; and
a joint joining the first support and the second support together, wherein
the joint is flexible and provided not to interfere with the bending portion, and
the joint is a frame member, an entire portion of the frame member being flexible.

2. The display device of claim 1 , wherein
the joint is higher in rigidity than the display panel.

3. The display device of claim 1 , wherein
the pair of the flat portions is foldable by a hinge mechanism.

4. The display device of claim 1 , wherein
the joint is a plate member having an opening corresponding to the bending portion, the plate member having a portion not having the opening and provided between (i) the pair of the flat portions and the (ii) the first and second supports.

5. The display device of claim 1 , wherein
the joint is the frame member having an opening formed to surround the display panel in plan view.

6. The display device of claim 5 , wherein
the frame member is as thick as the display panel.

7. The display device of claim 6 , wherein
a neutral plane of the frame member and a neutral plane of the display panel are in the same position.

8. The display device of claim 5 , wherein
the frame member is thicker than the display panel, and
a neutral plane of the frame member and a neutral plane of the display panel are in the same position.

9. The display device of claim 1 , wherein
the joint is the frame member having a U-shaped cross-section opened inward to accommodate a peripheral end of the display panel.

10. The display device of claim 9 , wherein
the frame member is thicker than the display panel, and
a neutral plane of the frame member and a neutral plane of the display panel are in the same position.

11. The display device of claim 5 , further comprising
a resin frame having a U-shaped cross-section and opened inward to accommodate all of the frame member and a peripheral end of the display panel.

12. The display device of claim 1 , wherein
the joint is made of a superelastic alloy.

13. The display device of claim 1 , wherein
the joint includes a first layer made of an inorganic film, a second layer made of a superelastic alloy provided on one surface of the first layer, and a third layer made of a superelastic alloy provided on another surface of the first layer.

14. The display device of claim 1 , wherein
the display panel is an organic EL display panel.

15. The display device of claim 1 , wherein
the joint is bonded to surfaces of the first and second supports, the surfaces facing and supporting the display panel.

16. The display device of claim 3 , wherein
a pair of housings that each accommodate a corresponding one of the first support and the second support are joined by the hinge mechanism, and
the hinge mechanism is provided independently from the joint.

17. The display device of claim 9 , wherein
the frame member includes a U-shaped cross-section opened inward to accommodate an entire peripheral end of the display panel.

Assignees

• Sharp Kk

Inventors

• Ochi Takashi
• Ishida Mamoru
• Sonoda Tohru
• Senoo Tohru
• Hirase Takeshi

Classifications

• G09F9/301 Primary

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

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K77/111 Primary

  Flexible substrates · CPC title

• H10D86/443

  adapted for preventing breakage, peeling or short circuiting · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title