Organic el display device

Patent metadata

Field	Value
Publication number	US-11270605-B2
Application number	US-202016895066-A
Country	US
Kind code	B2
Filing date	Jun 8, 2020
Priority date	Jul 21, 2016
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

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 defined by a single monolithic plate member having an opening corresponding to the bending portion extending through the plate member, the plate member having a portion not having the opening and provided between (i) the pair of the flat portions and (ii) the first and second supports.

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 made of a superelastic alloy.

5. 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.

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

7. The display device of claim 1 , wherein
the plate member includes an outer peripheral edge positioned outside of a peripheral edge of the display panel.

8. 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,
the joint is defined by a single monolithic frame member having an opening formed to surround the display panel in plan view extending through the frame member, and
the frame member is as thick as the display panel.

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

10. The display device of claim 8 , 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.

11. The display device of claim 8 , wherein
the joint is made of a superelastic alloy.

12. The display device of claim 8 , 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.

13. The display device of claim 8 , wherein
the display panel is an organic EL display panel.

14. The display device of claim 8 , wherein
the joint is defined by the frame member including an opening which surrounds the entire display panel in a single plane in the plan view.

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