Display device including tapered substrate

Patent metadata

Field	Value
Publication number	US-9537013-B2
Application number	US-201514665881-A
Country	US
Kind code	B2
Filing date	Mar 23, 2015
Priority date	Mar 31, 2014
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

A display device is provided including a first substrate comprising a resin material provided with a plurality region provided with a plurality of pixels including a display device, and a second substrate provided facing the first substrate and installed with the pixel region, wherein an outer periphery side surface of the first substrate having a taper shape and including a barrier layer covering an upper layer, lower layer and the outer periphery side surface of the first substrate.

First claim

What is claimed is:

1. A display device comprising:
a first substrate comprising a resin material provided with a pixel region provided with a plurality of pixels;
a second substrate provided facing the first substrate and installed with the pixel region; and
an outer periphery side surface of the first substrate having a taper shape and including a first barrier layer covering a lower surface of the first substrate, and a second barrier layer covering an upper surface and the outer periphery side surface of the first substrate.

2. The display device according to claim 1 ,
the second barrier layer contacts the first barrier layer around the outer periphery side surface of the first substrate.

3. The display device according to claim 1 , each of the first and second barrier layers comprises an inorganic material.

4. The display device according to claim 3 , wherein the inorganic material is at least one from among silicon nitride, silicon oxide, silicon oxynitride and aluminum oxide.

5. The display device according to claim 1 , wherein a third barrier layer comprising a metal material is further provided between the first substrate and the second barrier layer.

6. The display device according to claim 5 , wherein the first barrier layer and the second barrier layer contact an outer side region of the third barrier layer.

7. The display device according to claim 5 , wherein the metal material is titanium.

8. The display device according to claim 1 , wherein
the second substrate is formed from a resin material,
an outer periphery side surface of the second substrate having a taper shape, and
a fourth barrier layer is included on a surface facing the outer periphery side surface and the first substrate.

9. The display device according to claim 1 , wherein
a passivation layer is included to cover the pixel region, and
the passivation layer is provided extending as far as the outer periphery side surface of the first substrate and overlaps the second barrier layer on the outer periphery side surface.

10. The display device according to claim 2 , wherein
the pixel region includes a transistor,
the transistor includes a semiconductor layer forming a channel, a gate electrode and a gate insulating layer between the semiconductor layer and gate electrode,
a source-drain electrode contacts a source or drain of the transistor via a first interlayer dielectric provided on an upper surface of the gate electrode, and
either one or both of the gate insulating layer and first interlayer dielectric is provided extending as far as the outer periphery side surface of the first substrate and overlaps the second barrier layer on the outer periphery side surface.

11. The display device according to claim 10 , wherein
a second interlayer dielectric, a pixel electrode above the second interlayer dielectric, an organic electroluminescence device stacked with an organic electroluminescence layer and opposing electrode, a bank layer covering an end part of the pixel electrode, and a bank layer above the opposing electrode are provided on an upper layer of the first interlayer dielectric; and
the passivation layer extends to the outer periphery side surface of the first substrate, and
the passivation layer, the gate insulating layer, the first and second interlayer dielectrics and the second barrier layer are stacked on the outer periphery side surface of the first substrate.

12. The display device according to claim 11 , wherein
a part of the second interlayer dielectric and the bank layer includes a taper shape, and
the passivation layer is provided along an end part of the bank layer extending as far as the outer periphery side surface of the first substrate.

13. The display device according to claim 1 , wherein
an end part of the second interlayer dielectric is provided further to the interior than the outer periphery side surface of the first substrate, and
the end part of the bank layer is provided further to the interior than the end part of the second interlayer dielectric.

14. The display device according to claim 1 , wherein a stacked layer of the passivation layer, the gate insulating layer, the interlayer dielectric, and the bank layer extend to the outer periphery side surface of the first substrate.

15. The display device according to claim 1 , wherein the display device is an organic electroluminescence device or liquid crystal device.

Assignees

• Japan Display Inc

Inventors

• Nishinohara Takuma
• Itoga Toshihiko
• Oku Norio
• Kimura Yasukazu
• Fujiyoshi Jun

Classifications

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K59/121

  characterised by the geometry or disposition of pixel elements · CPC title

• H10K50/84 Primary

  Passivation; Containers; Encapsulations · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/871

  Self-supporting sealing arrangements · CPC title