# US 2019/0173049 A1 · Flexible display apparatus

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- Number: US 2019/0173049 A1
- Document ID: US20190173049A1
- Status: Published application
- Kind: A1
- Application number: 16/272,931
- Filed: 2019-02-11
- Published: 2019-06-06
- Earliest claimed: 2016-05-18
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Hyunjoon OH; Boa KIM; Sanghoon KIM; Sangil PARK; Heonjung SHIN; Hyejin OH; Jeoungsub LEE; Minhoon CHOI
- Web page: https://patentgrep.com/patent/US20190173049A1

## CPC

- H10K 59/87: {Passivation; Containers; Encapsulations}
- H10K 77/111: {Flexible substrates}
- H10K 2102/311: {Flexible OLED}
- Y02E 10/549: Organic PV cells
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A flexible display apparatus includes a substrate having a bending portion, a display over the substrate, and a cover over the substrate and covering the display. The cover includes a first film having a first surface and a second surface opposite the first surface, a second film over the first film, and an adhesive layer between the first film and the second film and attaching the first film to the second film. The first film includes at least one division line in at least some regions thereof in a direction from the first surface toward the second surface.

## Claims

### Claim 1

A flexible display apparatus comprising:
a substrate having a bending portion;
a display over the substrate; and
a cover over the substrate and covering the display,
wherein the cover comprises:
a first film having a first surface and a second surface opposite the first surface;
a second film over the first film; and
an adhesive layer between the first film and the second film and attaching the first film to the second film, and
the first film comprises at least one division line in at least some regions thereof in a direction from the first surface toward the second surface, wherein the at least one division line penetrates from the first surface to the second surface of the first film.

### Claim 2 (depends on 1)

The flexible display apparatus of claim 1, wherein the at least one division line comprises two or more division lines, and
the at least one division line comprises n division lines that divide the first film into n+1 regions.

### Claim 3 (depends on 1)

The flexible display apparatus of claim 1, wherein the at least one division line is at a position corresponding to the bending portion.

### Claim 4 (depends on 1)

The flexible display apparatus of claim 1, wherein the at least one division line comprises two or more division lines throughout the first film.

### Claim 5 (depends on 1)

The flexible display apparatus of claim 1, wherein the at least one division line comprises two or more division lines, and
an interval between the two or more division lines at a position corresponding to the bending portion is different from an interval between the two or more division lines at other positions.

### Claim 6 (depends on 5)

The flexible display apparatus of claim 5, wherein the interval between the two or more division lines at the position corresponding to the bending portion is less than the interval between the two or more division lines at the other positions.

### Claim 7 (depends on 1)

The flexible display apparatus of claim 1, wherein the first film further comprises a healing agent.

### Claim 8 (depends on 7)

The flexible display apparatus of claim 7, wherein, when the first film is torn, a healing material discharged from the healing agent is cross-linked to a material constituting the first film.

### Claim 9 (depends on 1)

The flexible display apparatus of claim 1, wherein the first film is a buffer film.

### Claim 10 (depends on 9)

The flexible display apparatus of claim 9, wherein the first film comprises an elastomer-based material.

### Claim 11 (depends on 10)

The flexible display apparatus of claim 10, wherein the first film comprises at least one selected from the group consisting of urethane, acrylate, and silicone.

### Claim 12 (depends on 9)

The flexible display apparatus of claim 9, wherein the first film comprises a plurality of air pores and has a foam density of about 0.3 g/cm3 to about 0.7 g/cm3.

### Claim 13 (depends on 9)

The flexible display apparatus of claim 9, wherein the first film has a thickness of about 50 μm to about 150 μm.

### Claim 14 (depends on 1)

The flexible display apparatus of claim 1, wherein the at least one division line comprises two or more division lines and an interval between the two or more division lines is in a range from about 10 μm to about 1 mm.

### Claim 15 (depends on 1)

The flexible display apparatus of claim 1, further comprising a third film under the first film,
wherein the second film is a light blocking film and the third film is a heat dissipation film.

### Claim 16 (depends on 1)

The flexible display apparatus of claim 1, wherein the at least one division line is formed from the first surface toward the second surface of the first film by a blanking process.