# US 12,762,977 B2 · Display device

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- Number: US 12,762,977 B2
- Document ID: US12762977B2
- Status: Granted
- Kind: B2
- Application number: 18/105,762
- Filed: 2023-02-03
- Published: 2023-08-10
- Granted: 2026-10-13
- Earliest claimed: 2022-02-07
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., LTD.
- Inventors: Soo Yeon Han; Chel Gou Lim; Jeongjin Park
- Web page: https://patentgrep.com/patent/US12762977B2

## CPC

- G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED}
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS

## Abstract

The disclosure includes a display panel, and a support layer positioned on the display panel. The support layer includes a metal layer, and an elastic layer positioned on opposing sides of the metal layer, and the metal layer has an alternate structure in which grooves are alternately defined on the opposing sides thereof.

## Claims

### Claim 1

A display device comprising:
a display panel; and
a support layer positioned on the display panel,
wherein the support layer includes:
a metal layer positioned below the display panel; and
an elastic layer positioned on opposing surfaces of the metal layer below the display panel, and
the metal layer below the display panel has an undulated cross-sectional shape formed by repeated convex and concave grooves in an alternate structure such that the grooves are alternately defined on each of the opposing surfaces thereof,
wherein the convex and concave grooves are formed in a single metal layer such that both opposing surfaces of the metal layer define the undulated cross-sectional shape, and
wherein portions of the elastic layer are positioned within the grooves defined on both the opposing surfaces of the metal layer.

### Claim 2 (depends on 1)

The display device of claim 1, wherein
the metal layer includes at least one selected from aluminum, titanium, and stainless steel.

### Claim 3 (depends on 1)

The display device of claim 1, wherein
a thickness of the metal layer is in a range of about 0.5 mm to about 2 mm.

### Claim 4 (depends on 1)

The display device of claim 1, wherein
the elastic layer fills the grooves of the metal layer.

### Claim 5 (depends on 1)

The display device of claim 1, wherein
an elasticity coefficient of the elastic layer is in a range of about 1 KPa to about 10 GPa.

### Claim 6 (depends on 1)

The display device of claim 1, wherein
the elastic layer includes an elastomer.

### Claim 7 (depends on 1)

The display device of claim 1, wherein
a thickness of the support layer is in a range of about 10 m to about 10 mm.

### Claim 8 (depends on 1)

The display device of claim 1, wherein
a width of each of the grooves is one to ten times a thickness of the metal layer.

### Claim 9 (depends on 1)

The display device of claim 1, wherein
a height of each of the groove is one to ten times a thickness of the metal layer.

### Claim 10 (depends on 1)

The display device of claim 1, wherein
a predetermined region of the metal layer is not covered by the elastic layer.

### Claim 11 (depends on 1)

The display device of claim 1, wherein
the support layer further includes a flat metal layer positioned between the metal layer and the display panel.

### Claim 12 (depends on 11)

The display device of claim 11, wherein
slits are defined in the flat metal layer in one direction.

### Claim 13 (depends on 1)

The display device of claim 1, wherein
the display device is rollable.

### Claim 14 (depends on 13)

The display device of claim 13, wherein
a proceeding direction of each of the grooves is perpendicular to a rolling direction of the display device.

### Claim 15 (depends on 13)

The display device of claim 13, wherein
the grooves are alternately positioned on the opposing surfaces of the metal layer in a rolling direction of the display device.

### Claim 16 (depends on 1)

The display device of claim 1, wherein
the groove has a quadrangular shape with a curved corner in a cross-section.

### Claim 17 (depends on 1)

The display device of claim 1, wherein
the groove has a triangular shape with a curved corner in a cross-section.

### Claim 18 (depends on 1)

The display device of claim 1, wherein
the groove has an oval shape in a cross-section.

### Claim 19 (depends on 1)

The display device of claim 1, wherein
the groove has a circular shape in a cross-section.

### Claim 20 (depends on 1)

The display device of claim 1, wherein
a valid thickness of the metal layer for a neutral plane is equal to or less than about 10% of an actual thickness of the metal layer.

### Claim 21 (depends on 1)

The display device of claim 1, wherein
a neutral plane of the display device is positioned in the display panel.