Display device having circular, oval, polygonal frame with opening in bending portion

Patent metadata

Field	Value
Publication number	US-11508798-B2
Application number	US-201816980149-A
Country	US
Kind code	B2
Filing date	Mar 12, 2018
Priority date	Mar 12, 2018
Publication date	Nov 22, 2022
Grant date	Nov 22, 2022

Abstract

In an organic electroluminescence (EL) display device, a display region and a first frame region are defined in a substantially circular shape or a substantially oval shape, and in a bending portion, an opening is formed in an inorganic layered film, and a frame flattening film is provided to fill the opening. An end portion of the opening on the display region side is formed along an arc of the first frame region on the bending portion side.

First claim

The invention claimed is:

1. A display device comprising:
a resin substrate;
a thin film transistor (TFT) layer provided on the resin substrate and including a flattening film;
a light-emitting element provided via the TFT layer to constitute a display region;
a first frame region provided around the display region;
a second frame region provided adjacent to the first frame region;
a terminal portion provided at an end portion of the second frame region;
a bending portion provided between the display region and the terminal portion in the second frame region;
a plurality of frame wiring lines that are provided in the second frame region, are connected to a wiring line of the display region, and extend to the terminal portion; and
an at least one-layer inorganic film provided in the second frame region to constitute the TFT layer layered on the resin substrate,
wherein the display region and the first frame region are defined in a substantially circular shape or a substantially oval shape,
in the bending portion and a region between the bending portion and the first frame region, an opening is formed in the at least one-layer inorganic film and a frame flattening film is provided to fill the opening, and
an end portion of the opening on the display region side is formed along an arc of the first frame region on the bending portion side.

2. The display device according to claim 1 ,
wherein the plurality of frame wiring lines are provided on the frame flattening film to cross the opening,
a width of the opening gradually increases from a central portion to an end portion of the opening in a direction orthogonal to a direction in which the plurality of frame wiring lines extend,
the frame flattening film at the central portion has an uneven shape, and
the frame wiring lines are provided along a surface of the uneven shape.

3. The display device according to claim 2 ,
wherein some of the plurality of frame wiring lines in the opening are in contact with the resin substrate.

4. The display device according to claim 2 ,
wherein at least one of the plurality of frame wiring lines is provided along a surface of the frame flattening film without an uneven shape at an end portion of the opening in the direction orthogonal to the direction in which the plurality of frame wiring lines extend.

5. The display device according to claim 1 ,
wherein a plurality of ribs formed of the at least one-layer inorganic film are provided in the opening.

6. The display device according to claim 5 ,
wherein the plurality of ribs are provided to extend along the end portion of the opening on the display region side.

7. The display device according to claim 5 ,
wherein the plurality of ribs are provided to extend along a direction orthogonal to a direction in which the plurality of frame wiring lines extend.

8. The display device according to claim 1 ,
wherein the light-emitting element is an organic electroluminescence (EL) element.

9. The display device according to claim 1 ,
wherein, in a direction orthogonal to a direction in which the plurality of frame wiring lines extend, a width of the second frame region is equal to a width of the region between the bending portion and the first frame region in the opening.

10. The display device according to claim 1 ,
wherein the plurality of frame wiring lines are provided on the frame flattening film to cross the opening,
the frame flattening film has a concave portion and a convex portion forming an uneven shape, the concave portion and the convex portion are arranged along the direction in which the plurality of frame wiring lines extend, and the plurality of frame wiring lines are provided along a surface of the concave portion and the convex portion.

11. A display device comprising:
a resin substrate;
a TFT layer provided on the resin substrate and including a flattening film;
a light-emitting element provided via the TFT layer to constitute a display region;
a first frame region provided around the display region;
a second frame region provided adjacent to the first frame region;
a terminal portion provided at an end portion of the second frame region;
a bending portion provided between the display region and the terminal portion in the second frame region;
a plurality of frame wiring lines that are provided in the second frame region, are connected to a wiring line of the display region, and extend to the terminal portion; and
an at least one-layer inorganic film provided in the second frame region to constitute the TFT layer layered on the resin substrate,
wherein the display region and the first frame region are defined in a polygonal shape,
a distance between an end portion of the first frame region on the bending portion side and the bending portion in a longitudinal direction of the display device varies in a short-hand direction of the display device,
in the bending portion and a region between the bending portion and the first frame region, an opening is formed in the at least one-layer inorganic film and a frame flattening film is provided to fill the opening, and
an end portion of the opening on the display region side is formed along the end portion of the first frame region on the bending portion side.

12. The display device according to claim 11 ,
wherein the plurality of frame wiring lines are provided on the frame flattening film to cross the opening,
a width of the opening gradually increases from a central portion to an end portion of the opening in a direction orthogonal to a direction in which the plurality of frame wiring lines extend,
an uneven portion is formed on the frame flattening film at the central portion, and
the plurality of frame wiring lines are provided along a surface of the uneven portion.

13. The display device according to claim 12 ,
wherein some of the plurality of frame wiring lines in the opening are in contact with the resin substrate.

14. The display device according to claim 12 ,
wherein at least one of the plurality of frame wiring lines is provided along a surface of the frame flattening film without an uneven shape at an end portion of the opening in the direction orthogonal to the direction in which the plurality of frame wiring lines extend.

15. The display device according to claim 11 ,
wherein a plurality of ribs formed of the at least one-layer inorganic film are provided in the opening.

16. The display device according to claim 15 ,
wherein the plurality of ribs are provided to extend along the end portion of the opening on the display region side.

17. The display device according to claim 15 ,
wherein the plurality of ribs are provided to extend along a direction orthogonal to a direction in which the plurality of frame wiring lines extend.

18. The display device according to claim 11 ,
wherein, in a direction orthogonal to a direction in which the plurality of frame wiring lines extend, a width of the second frame region is equal to a width of the region between the bending portion and the first frame region in the opening.

19. The display device according to claim 11 ,
wherein the plurality of frame wiring lines are provided on the frame flattening film to cross the opening,
the frame flattening film has a concave portion and a convex portion forming an uneven shape, the concave portion and the convex portion are arranged along the direction in which the plurality of frame wiring lines extend, and the plurality of frame wiring lines are provided along a surface of the concave

Assignees

• Sharp Kk

Inventors

• Saitoh Takao
• Kaneko Seiji
• Kanzaki Yohsuke
• Miwa Masahiko
• Yamanaka Masaki
• Sun Yi

Classifications

• G09F9/30

  in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) · CPC title

• H05B33/02

  Details · CPC title

• H05B33/12

  Light sources with substantially two-dimensional [2D] radiating surfaces · CPC title

• H05B33/22

  characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers · CPC title

• H05B33/06

  Electrode terminals · CPC title