# US 2017/0288164 A1 · Display device

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- Number: US 2017/0288164 A1
- Document ID: US20170288164A1
- Status: Published application
- Kind: A1
- Application number: 15/629,947
- Filed: 2017-06-22
- Published: 2017-10-05
- Earliest claimed: 2014-07-28
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Tetsuya NAGATA
- Web page: https://patentgrep.com/patent/US20170288164A1

## CPC

- H10K 59/871: {Self-supporting sealing arrangements}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A display device includes a first substrate, a light emitting element located on the first substrate and including a pair of electrodes and one organic layer or a plurality of organic layers located between the pair of electrodes, a second substrate located to face the first substrate, a third substrate located on a surface of the second substrate opposite to a surface thereof facing the light emitting element, and a tacky layer located between the second substrate and the third substrate, a tack strength between the tacky layer and the second substrate or the third substrate being weaker than an adhesive strength between one of the pair of electrodes and the one organic layer or an adhesive strength between the plurality of organic layers.

## Claims

### Claim 1

A display device, comprising:
a first substrate having a display area and a peripheral area;
a light emitting element on the first substrate and in the display area and including a pair of electrodes and one organic layer or a plurality of organic layers between the pair of electrodes;
a protective layer on the light emitting element;
a touch sensor on the protective layer and
a first tacky layer on a surface of the first substrate opposite to a surface thereof having the light emitting element located thereon, a tack strength between the first tacky layer and the first substrate being weaker than an adhesive strength between one of the pair of electrodes and the one organic layer or an adhesive strength between the plurality of organic layers.

### Claim 2 (depends on 1)

The display device according to claim 1, wherein the first tacky layer is kept tacky after being peeled off.

### Claim 3 (depends on 1)

The display device according to claim 1, wherein the first tacky layer is in the display area and in the peripheral area.

### Claim 4 (depends on 1)

The display device according to claim 1, further comprising a first adhesive layer on the first substrate so as to enclose the first tacky layer.

### Claim 5 (depends on 1)

The display device according to claim 1, further comprising a second substrate on a surface of the tacky layer opposite to a surface thereof facing the light emitting element.

### Claim 6 (depends on 1)

The display device according to claim 1, further comprising:
a third substrate between the touch sensor and the protective layer; and
a second tacky layer between the touch sensor and the third substrate.

### Claim 7 (depends on 6)

The display device according to claim 6, wherein a tack strength between the second tacky layer and the third substrate is weaker than the adhesive strength between one of the pair of electrodes and the one organic layer or the adhesive strength between the plurality of organic layers.

### Claim 8 (depends on 7)

The display device according to claim 7, wherein the second tacky layer is kept tacky after being peeled off.

### Claim 9 (depends on 7)

The display device according to claim 7, wherein the second tacky layer is in the display area and in the peripheral area.