Organic EL display panel, organic EL display device, and method of manufacturing organic EL display panel and organic EL display device

Patent metadata

Field	Value
Publication number	US-10224495-B2
Application number	US-201715484163-A
Country	US
Kind code	B2
Filing date	Apr 11, 2017
Priority date	Apr 11, 2016
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

In an organic electroluminescence (EL) display panel including: a substrate that is flexible and is made of a resin material; a plurality of light-emitting elements that are disposed on the substrate and are spaced away from one another; and a plurality of wire units that are disposed on the substrate and establish electrical connection between the plurality of light-emitting elements, a first region of the substrate that is below the light-emitting elements has greater stiffness than a second region of the substrate that is a remainder of the substrate.

First claim

The invention claimed is:

1. An organic EL display device comprising
an organic EL display panel comprising:
a substrate that is flexible and is made of a resin material;
a plurality of light-emitting elements that are disposed on the substrate and are spaced away from one another; and
a plurality of wire units that are disposed on the substrate and establish electrical connection between the plurality of light-emitting elements, wherein
a first region of the substrate having edges aligned with edges of the light-emitting elements, wherein the first region of the substrate has greater stiffness than a second region of the substrate that is a remainder of the substrate;

a receiving substrate having a three-dimensionally curved surface; and
a sealing layer and an adhesion layer, wherein
the sealing layer, the organic EL display panel, the adhesion layer, and the receiving substrate are laminated in this order.

2. The organic EL display device of claim 1 , wherein
the wire units are disposed above the second region.

3. The organic EL display device of claim 1 , wherein
the substrate has a greater mean thickness at the first region than at the second region.

4. The organic EL display device of claim 1 , wherein
the first layer and the second layer are made of a same material, and
in a thickness direction of the substrate, the first layer and the second layer are continuous with each other in the first region.

5. The organic EL display device of claim 1 , wherein
the first layer is made of a first material,
the second layer is made of a second material, and
the first material has greater stiffness than the second material.

6. The organic EL display device of claim 1 , wherein
the fence portions are curved in plan view of the substrate.

7. The organic EL display device of claim 1 , wherein
the substrate is light-transmissive.

8. The organic EL display device of claim 1 , wherein
for any pair of a first portion and a second portion that are each a portion of the substrate, the first portion being closer to a periphery of the substrate than the second portion,
an arrangement of the light-emitting elements is such that a distance between ones of the light-emitting elements on the first portion is wider than a distance between ones of the light-emitting elements on the second portion.

9. The organic EL display device of claim 1 , wherein
the receiving substrate is light-transmissive, and
a display surface of the organic EL display panel faces the receiving substrate.

10. The organic EL display device of claim 1 , wherein
a display surface of the organic EL display panel faces away from the receiving substrate.

11. The organic EL display device of claim 1 , wherein
an arrangement of the light-emitting elements is such that distance distribution between the light-emitting elements on the substrate is set in accordance with a shape of the receiving substrate.

12. A method of manufacturing an organic EL display device, comprising:
preparing the organic EL display device of claim 1 ;
stretching the organic EL display panel along a three-dimensionally curved surface of a receiving substrate and adhering a first surface of the organic EL display panel to the receiving substrate via an adhesion layer; and
covering a second surface of the organic EL display panel opposite the first surface with a sealing layer.

13. The method of claim 12 , wherein
the organic EL display panel is stretched so that a stretch ratio of the organic EL display panel differs depending on directions along a surface of the organic EL display panel.

14. The method of claim 12 , wherein
the organic EL display panel is stretched so that different portions of the organic EL display panel have different stretch ratios.

Assignees

• Joled Inc

Inventors

• Sasaki Atsushi

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• H01L27/3211

  Electricity · mapped topic

• H01L2227/323

  Electricity · mapped topic

• H01L2251/5338

  Electricity · mapped topic

• H01L2251/558

  Electricity · mapped topic