Light-emitting device comprising flexible substrate and light-emitting element

Patent metadata

Field	Value
Publication number	US-2016204185-A1
Application number	US-201614988855-A
Country	US
Kind code	A1
Filing date	Jan 6, 2016
Priority date	Jan 14, 2015
Publication date	Jul 14, 2016
Grant date	—

Abstract

The light-emitting device according to one aspect of the present disclosure includes a flexible substrate, a lower barrier layer positioned above the flexible substrate, a first light-emitting element and a second light-emitting element positioned above the lower barrier layer, a first upper barrier layer positioned above the first light-emitting element and including a first inorganic material, and a second upper barrier layer positioned above the second light-emitting element and including a second inorganic material. The first upper barrier layer and the second upper barrier layer are spaced from each other at least in a region between the first light-emitting element and the second light-emitting element.

First claim

What is claimed is:

1 . A light-emitting device comprising:
a flexible substrate; a lower barrier layer positioned above the flexible substrate; a first light-emitting element and a second light-emitting element positioned above the lower barrier layer; a first upper barrier layer positioned above the first light-emitting element and including a first inorganic material; and a second upper barrier layer positioned above the second light-emitting element and including a second inorganic material, wherein the first upper barrier layer and the second upper barrier layer are spaced from each other at least in a region between the first light-emitting element and the second light-emitting element.

2 . The light-emitting device according to claim 1 , further comprising:
a first organic material disposed between the first upper barrier layer and the second upper barrier layer.

3 . The light-emitting device according to claim 1 , wherein
the lower barrier layer includes a third inorganic material.

4 . The light-emitting device according to claim 1 , wherein
the lower barrier layer includes a first lower barrier layer and a second lower barrier layer spaced from each other; the first light-emitting element is positioned above the first lower barrier layer; and the second light-emitting element is positioned above the second lower barrier layer.

5 . The light-emitting device according to claim 4 , further comprising:
a second organic material disposed between the first lower barrier layer and the second lower barrier layer.

6 . The light-emitting device according to claim 4 , further comprising:
a first wiring disposed between the first lower barrier layer and the second lower barrier layer, wherein the first light-emitting element and the second light-emitting element each includes: a first electrode; a second electrode facing the first electrode; and a light-emitting layer positioned between the first electrode and the second electrode, and the first wiring connects the first electrode of the first light-emitting element and the first electrode of the second light-emitting element.

7 . The light-emitting device according to claim 6 , wherein
the first electrode, the light-emitting layer, and the second electrode are disposed from the bottom to the top in this order in each of the first light-emitting element and the second light-emitting element; the first light-emitting element and the second light-emitting element each further include: a first planarizing layer positioned between the first electrode of the first light-emitting element and the first lower barrier layer; and a second planarizing layer positioned between the first electrode of the second light-emitting element and the second lower barrier layer.

8 . The light-emitting device according to claim 1 , wherein
the first upper barrier layer and the second upper barrier layer are connected to the lower barrier layer directly or via an inorganic insulating layer at the side surfaces of the first light-emitting element and the second light-emitting element.

9 . The light-emitting device according to claim 1 , further comprising:
a sealing resin covering the first upper barrier layer and the second upper barrier layer.

10 . The light-emitting device according to claim 9 , further comprising:
an upper substrate disposed on the sealing resin and facing the flexible substrate.

11 . The light-emitting device according to claim 1 , further comprising:
a thin-film transistor disposed below at least one selected from the group of the first light-emitting element and the second light-emitting element; and a passivation layer covering the thin-film transistor.

12 . The light-emitting device according to claim 11 , wherein
the passivation layer is connected directly or via a metal material or a fourth inorganic material to at least one selected from the group of the first upper barrier layer, the second upper barrier layer, and the lower barrier layer.

13 . The light-emitting device according to claim 6 , wherein
the first wiring has a shape including at least one selected from the group of a curving portion and a bending portion in a planar view.

14 . The light-emitting device according to claim 6 , wherein
the first wiring includes a concave portion and a convex portion in a sectional view.

15 . The light-emitting device according to claim 1 , further comprising:
a second wiring striding across an end of the lower barrier layer, wherein the end of the lower barrier layer has a forward tapered shape.

16 . The light-emitting device according to claim 15 , further comprising:
an intervening layer having a forward tapered shape and disposed between the second wiring and the end of the lower barrier layer.

17 . A light-emitting device comprising:
a flexible substrate; a lower barrier layer positioned above the flexible substrate; a light-emitting element and a thin-film transistor controlling the light-emitting element positioned above the lower barrier layer; a first upper barrier layer positioned above the light-emitting element and including a first inorganic material; and a second upper barrier layer positioned above the thin-film transistor and including a second inorganic material, wherein the first upper barrier layer and the second upper barrier layer are spaced from each other at least in a region between the light-emitting element and the thin-film transistor.

18 . The light-emitting device according to claim 17 , wherein
the lower barrier layer includes a first lower barrier layer and a second lower barrier layer spaced from each other; the light-emitting element is positioned above the first lower barrier layer; and the thin-film transistor is positioned above the second lower barrier layer.

19 . The light-emitting device according to claim 17 , further comprising:
a connection wiring connecting the light-emitting element and the thin-film transistor.

20 . The light-emitting device according to claim 17 , further comprising:
a first passivation layer disposed between the light-emitting element and the lower barrier layer; and a second passivation layer disposed above the thin-film transistor, wherein the first passivation layer and the second passivation layer are made of the same material and have the same thickness.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Iijima Hiroaki
• Miyamoto Akihito
• Sasai Kenichi
• Osada Yoshichika
• Izuchi Masumi

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• H10K50/8426

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

• H10K50/844

  Encapsulations · CPC title

• H10K50/8445

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title