Display device and method for manufacturing display device

Patent metadata

Field	Value
Publication number	US-12484399-B2
Application number	US-202017909862-A
Country	US
Kind code	B2
Filing date	Apr 21, 2020
Priority date	Apr 21, 2020
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

A display device of the present disclosure has a display region including a thin-film transistor, a terminal section, and a bending portion provided between the display region and the terminal section, and the display device includes the following: a resin layer provided above a base in the bending portion; an insulating layer provided to cover the resin layer; and a first wire provided above the insulating layer and extending in a first direction to electrically connect the thin-film transistor and the terminal section together, the first direction being a direction where the display region and the terminal section are disposed, wherein in the bending portion, the resin layer has at least one hole or dent overlapping the first wire in a plan view, and the insulating layer has at least one opening overlapping the at least one hole or dent in a plan view.

First claim

The invention claimed is:

1 . A display device having a display region including a thin-film transistor, a terminal section, and a bending portion provided between the display region and the terminal section, the display device comprising:
a resin layer provided above a base in the bending portion; an insulating layer provided to cover the resin layer; and a first wire provided above the insulating layer and extending in a first direction to electrically connect the thin-film transistor and the terminal section together, the first direction being a direction where the display region and the terminal section are disposed, wherein in the bending portion,
the resin layer has at least one hole or dent overlapping the first wire in a plan view, and
the insulating layer has at least one opening overlapping the at least one hole or dent in a plan view, and
in a direction intersecting with the first direction, a width of the at least one opening is smaller than a width of a portion of the at least one hole or dent overlapping the at least one opening in a plan view.

2 . The display device according to claim 1 , wherein in a direction intersecting with the first direction, a width of the at least one opening is equal to or larger than a width of a portion of the first wire overlapping the at least one opening in a plan view.

3 . The display device according to claim 1 , wherein in a direction intersecting with the first direction, a width of the at least one opening is smaller than a width of a portion of the first wire overlapping the at least one opening in a plan view.

4 . The display device according to claim 3 , wherein in a direction intersecting with the first direction, a width of the at least one hole or dent is smaller than a width of a portion of the at least one opening overlapping the at least one hole or dent in a plan view.

5 . The display device according to claim 3 , wherein in a direction intersecting with the first direction, a width of the at least one hole or dent is equal to or larger than a width of a portion of the first wire overlapping the at least one hole or dent in a plan view.

6 . The display device according to claim 3 , wherein in a direction intersecting with the first direction, the at least one opening includes a narrower portion and a wider portion than the width of the first wire.

7 . The display device according to claim 1 , wherein in the bending portion, the at least one opening overlaps the first wire in a plan view in all locations under the first wire.

8 . The display device according to claim 1 , comprising a first-wire group with a plurality of the first wires spaced from each other in a direction intersecting with the first direction,
wherein the at least one opening overlaps the first-wire group in the direction intersecting with the first direction.

9 . The display device according to claim 1 , comprising at least one level difference mitigating portion provided under the at least one opening, and between an upper surface of the base and a lower surface of the resin layer.

10 . The display device according to claim 1 , comprising a second wire electrically connecting the thin-film transistor and the terminal section together, and extending along the first wire.

11 . The display device according to claim 10 , wherein the second wire is provided under the resin layer.

12 . A display device having a display region including a thin-film transistor, a terminal section, and a bending portion provided between the display region and the terminal section, the display device comprising:
a resin layer provided above a base in the bending portion; an insulating layer provided to cover the resin layer; and a first wire provided above the insulating layer and extending in a first direction to electrically connect the thin-film transistor and the terminal section together, the first direction being a direction where the display region and the terminal section are disposed, wherein in the bending portion, the resin layer has at least one hole or dent overlapping the first wire in a plan view, the insulating layer has at least one opening overlapping the at least one hole or dent in a plan view, and in a direction intersecting with the first direction, a width of the at least one opening is smaller than a width of a portion of the first wire overlapping the at least one opening in a plan view.

13 . The display device according to claim 12 , wherein in a direction intersecting with the first direction, a width of the at least one opening is smaller than a width of a portion of the at least one hole or dent overlapping the at least one opening in a plan view.

14 . The display device according to claim 12 , wherein in a direction intersecting with the first direction, a width of the at least one hole or dent is smaller than a width of a portion of the at least one opening overlapping the at least one hole or dent in a plan view.

15 . The display device according to claim 12 , wherein in a direction intersecting with the first direction, a width of the at least one hole or dent is equal to or larger than a width of a portion of the first wire overlapping the at least one hole or dent in a plan view.

16 . The display device according to claim 12 , wherein in a direction intersecting with the first direction, the at least one opening includes a narrower portion and a wider portion than the width of the first wire.

17 . The display device according to claim 12 , wherein in the bending portion, the at least one opening overlaps the first wire in a plan view in all locations under the first wire.

18 . The display device according to claim 12 , comprising a first-wire group with a plurality of the first wires spaced from each other in a direction intersecting with the first direction,
wherein the at least one opening overlaps the first-wire group in the direction intersecting with the first direction.

19 . The display device according to claim 12 , comprising at least one level difference mitigating portion provided under the at least one opening, and between an upper surface of the base and a lower surface of the resin layer.

20 . The display device according to claim 12 , comprising a second wire electrically connecting the thin-film transistor and the terminal section together, and extending along the first wire.

Assignees

• Sharp Kk

Inventors

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

Classifications

• H10K59/124

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title

• H10K2102/311

  Flexible OLED · CPC title

• H10K77/111

  Flexible substrates · CPC title

• 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