# US 2018/0026231 A1 · Display device and method of manufacturing the same

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- Number: US 2018/0026231 A1
- Document ID: US20180026231A1
- Status: Published application
- Kind: A1
- Application number: 15/719,664
- Filed: 2017-09-29
- Published: 2018-01-25
- Earliest claimed: 2014-06-25
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Jun Fujiyoshi; Kazuto Tsuruoka
- Web page: https://patentgrep.com/patent/US20180026231A1

## CPC

- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10K 59/873: {Encapsulations}
- H10K 77/111: {Flexible substrates}
- H10K 59/1201: {Manufacture or treatment}
- H10K 59/871: {Self-supporting sealing arrangements}
- H10K 71/80: using temporary substrates
- H10K 2102/311: {Flexible OLED}
- Y02E 10/549: Organic PV cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The aim is to improve the bending resistance a display device. The display device in one embodiment includes a substrate including a first surface and a second surface and a curved part between the first surface and the second surface, a display element arranged on the first surface, a conducting layer connected with the display element and extending to the second surface from the first surface via the curved part, a plurality of protective layers having a lower ductility than the substrate and arranged in the substrate side and/or opposite side to the substrate side with respect to the conducting layer and along the curved part, wherein each of the plurality of protective layers spreading over the curved part, to a certain region of the first surface side from the curved part, and to a certain region of the second side from the curved part.

## Claims

### Claim 1

A display device comprising:
a substrate including a first surface and a second surface and a curved part between the first surface and the second surface;
a display element arranged on the first surface;
a conducting layer connected with the display element and extending to the second surface from the first surface via the curved part;
a plurality of protective layers arranged in the substrate side and/or opposite side to the substrate side with respect to the conducting layer and along the curved part, each of the plurality of protective layers spreading over the curved part, to a certain region of the first surface side from the curved part, and to a certain region of the second surface side from the curved part.

### Claim 2 (depends on 1)

The display device according to claim 1, wherein the certain region of the first surface side is a region different to a region arranged with the display element.

### Claim 3 (depends on 1)

The display device according to claim 1, wherein a plurality of conductive layers are arranged in the curved part, and the protective layer arranged corresponding to at least one conducting layer is separated from the protective layer arranged corresponding to the conducting layer adjacent to the conducting layer.

### Claim 4 (depends on 1)

The display device according to claim 1, wherein a pattern periphery edge part of the protective layer is formed by a pattern enclosed by a line not having a vertex.

### Claim 5 (depends on 1)

The display device according to claim 1, wherein the display element is also arranged in the second surface, and the certain region of the second surface side is a region different to a region arranged with the display element of the second surface.

### Claim 6 (depends on 1)

The display device according to claim 1, wherein the conductive layer includes a metal oxide.

### Claim 7 (depends on 1)

The display device according to claim 1, wherein the substrate and the protective layer are organic resins.

### Claim 8 (depends on 1)

The display device according to claim 1, wherein the substrate is polyimide and the protective layer is acrylic resin.

### Claim 9

A display device comprising:
a substrate;
a display element arranged in the substrate;
a conducting layer connected with the display element and extending in a certain direction; and
a plurality of protective layers arranged along a direction different to a direction in which the conductive layer extends and arranged in the substrate side and/or opposite side to the substrate side with respect to the conducting layer.

### Claim 10

A method of manufacturing a display device comprising:
forming a display element, conducting layer and a plurality of protective layers in a substrate including a first surface, a second surface and a curved planned region between the first surface and second surface respectively,
the display element being formed in at least the first surface,
the conducting layer connecting with the display element and extending to the second surface via the curved planned region from the first surface,
each of the plurality of protective layers being arranged in a substrate side and/or opposite side to the substrate side with respect to the conducting layer, spreading over the curved planned region, to a certain region of the first surface side from the curved planned region, and to a certain region of the second side from the curved planned region, and
each of the plurality of protective layers being arranged along the curved planned region;
curving and fixing the substrate in the curved planned region; and
baking the substrate.

### Claim 11 (depends on 10)

The method according to claim 10, wherein the certain region of the first surface side is a region different to a region arranged with the display element.

### Claim 12 (depends on 10)

The method according to claim 10, wherein a plurality of conductive layers are arranged in the curved planned region, and the protective layer arranged corresponding to at least one conducting layer is separated from the protective layer arranged corresponding to the conducting layer adjacent to the conducting layer.

### Claim 13 (depends on 10)

The method according to claim 10, wherein a pattern periphery edge part of the protective layer is formed by a pattern enclosed by a line not having a vertex.

### Claim 14 (depends on 10)

The method according to claim 10, wherein the display element is also arranged in the second surface, and the certain region of the second surface side is a region different to a region arranged with the display element of the second surface.

### Claim 15 (depends on 10)

The method according to claim 10, wherein the conductive layer includes a metal oxide.

### Claim 16 (depends on 10)

The method according to claim 10, wherein the substrate and the protective layer are organic resins.

### Claim 17 (depends on 16)

The method according to claim 16, wherein the substrate is polyimide and the protective layer is acrylic resin.