Display device

Patent metadata

Field	Value
Publication number	US-10396141-B2
Application number	US-201715478400-A
Country	US
Kind code	B2
Filing date	Apr 4, 2017
Priority date	Apr 4, 2016
Publication date	Aug 27, 2019
Grant date	Aug 27, 2019

Abstract

According to one embodiment, a display device comprises a flexible substrate, a first insulating film disposed on the flexible substrate, a switching element disposed on the first insulating film, a signal wiring electrically connected with the switching element, a first organic film disposed on the signal wiring, a connection wiring disposed on the first organic film, a second organic film disposed on the connection wiring and a pad electrode disposed on the second organic film. The connection wiring is located between the first organic film and the second organic film and is in contact with the first organic film and the second organic film.

First claim

What is claimed is:

1. A display device, comprising:
a flexible substrate including an image display area and a non-display area surrounding the image display area;
a first insulating film disposed on the flexible substrate;
a switching element disposed on the first insulating film;
a second insulating film disposed on a semiconductor layer of the switching element;
a third insulating film disposed on a gate electrode of the switching element;
a signal wiring disposed on the third insulating film and electrically connected with the switching element;
a first organic film disposed on the signal wiring;
a connection wiring disposed on the first organic film and electrically connected with the signal wiring through a first contact hole in the first organic film;
a second organic film disposed on the connection wiring and the first organic film; and
a pad electrode disposed on the second organic film and electrically connected with the connection wiring through a second contact hole in the second organic film,
wherein the connection wiring is located between the first organic film and the second organic film and is in contact with the first organic film and the second organic film,
the non-display area includes a first area adjacent to the image-display area, a second area adjacent to the first area, and a third area adjacent to the second area,
the flexible substrate is bent at the second area in which the connection wiring is located between the first organic film and the second organic film,
the first contact hole is located in the first area,
the second contact hole is located in the third area,
the connection wiring is formed continuously as one unitary wiring from the first contact hole to the pad electrode, and
the first insulating film, the second insulating film, and the third insulating film are not disposed in the second area,
the first organic film is in contact with a surface of the flexible substrate in the second area,
the first organic film has a first thickness in the first area and the third area, and a second thickness in the second area, and
the second thickness is larger than the first thickness.

2. The display device of claim 1 , wherein
the connection wiring is out of contact with the first insulating film.

3. The display device of claim 1 , wherein
at least one of the first contact hole and the second contact hole is arranged at a plurality of positions in a zigzag state in planar view.

4. The display device of claim 1 , wherein
the flexible substrate is formed of polyimide.

5. The display device of claim 1 , wherein
the first insulating film is formed continuously from the image display area to the first area.

6. The display device of claim 1 , wherein
the signal wiring is formed continuously from the image display area to the first area.

Assignees

• Japan Display Inc

Inventors

• Kawata Yasushi

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• G02F1/1345

  Conductors connecting electrodes to cell terminals · CPC title

• G02F1/133305

  Flexible substrates, e.g. plastics, organic film · CPC title

• H01L2251/5338

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic