# US 2025/0147553 A1 · Foldable display device

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- Number: US 2025/0147553 A1
- Document ID: US20250147553A1
- Status: Published application
- Kind: A1
- Application number: 19/018,223
- Filed: 2025-01-13
- Published: 2025-05-08
- Earliest claimed: 2019-12-30
- Assignees: LG Innotek Co., Ltd.
- Applicants: LG Innotek Co., Ltd.
- Inventors: Sung Won KANG; Jae Seok PARK
- Web page: https://patentgrep.com/patent/US20250147553A1

## CPC

- G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable}
- G09F 9/30: 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)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS

## Abstract

A display device according to an embodiment comprises: an elastic member; and at least one panel from among a display panel and a touch panel which are arranged on the elastic member, wherein the elastic member includes one surface and the other surface opposite to the one surface, the elastic member includes a first area and a second area, the first area is defined as a folding area, the second area is defined as an unfolding area, the elastic member has a plurality of first grooves arranged on the one surface in the first area thereof, and the panel is arranged on the other surface of the elastic member via an adhesive layer.

## Claims

### Claim 1

An elastic member comprising:
a first region; and
a second region,
wherein the second region includes a plurality of portion spaced apart from each other,
wherein the first region is disposed between the plurality of portion of the second region,
wherein a plurality first patterns are disposed in the first region,
wherein a plurality second patterns are disposed in the second region, and
wherein a size of the second patterns decreases away from a folding axis.

### Claim 2 (depends on 1)

The elastic member of claim 1, wherein an interval of the second patterns increases away from the folding axis.

### Claim 3 (depends on 1)

The elastic member of claim 1, wherein a plurality of hinge portions are disposed on the first region,
wherein one of the hinge portions is formed with both ends in a width direction penetrating, and
wherein the first patterns and the hinge portions overlap in the width direction.

### Claim 4 (depends on 1)

The elastic member of claim 1, wherein a resin material is disposed inside at least one of the first patterns or the second patterns.

### Claim 5 (depends on 1)

The elastic member of claim 1, wherein at least one of the first patterns or the second patterns has a width in a longitudinal direction greater than a width in a width direction.

### Claim 6 (depends on 1)

The elastic member of claim 1, wherein a width of the first patterns and the second patterns in a width direction is 10 μm to 500 μm.

### Claim 7 (depends on 1)

The elastic member of claim 1, wherein the first patterns and the folding axis overlap in a width direction.

### Claim 8 (depends on 1)

The elastic member of claim 1, wherein one of the first patterns adjacent to each other overlap in a longitudinal direction.

### Claim 9 (depends on 1)

The elastic member of claim 1, wherein one of the second patterns adjacent to each other overlap in a longitudinal direction.

### Claim 10 (depends on 1)

The elastic member of claim 1, wherein the first region is folded.

### Claim 11

An elastic member comprising:
a first surface and a second surface opposite the first surface; and
a first region and a second region,
wherein the second region includes a plurality of portion spaced apart from each other,
wherein the first region is disposed between the plurality of portion of the second region,
wherein a plurality first patterns are disposed in the first region,
wherein a plurality second patterns are disposed in the second region, and
wherein a density of the second patterns decreases away from a folding axis.

### Claim 12 (depends on 11)

The elastic member of claim 11, wherein the first surface is a folding outer surface, and the second surface is the folding inner surface.

### Claim 13 (depends on 11)

The elastic member of claim 11, wherein the second patterns include a groove formed on the first surface, and
wherein a depth of the second pattern is less than 50% of a thickness of the elastic member.

### Claim 14 (depends on 11)

The elastic member of claim 11, wherein the second patterns include a groove formed on the first surface, and
wherein a depth of the second pattern is 50% or more of a thickness of the elastic member.