# US 10,481,640 B2 · Display device

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- Number: US 10,481,640 B2
- Document ID: US10481640B2
- Status: Granted
- Kind: B2
- Application number: 15/613,316
- Filed: 2017-06-05
- Published: 2017-12-14
- Granted: 2019-11-19
- Earliest claimed: 2016-06-10
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Tae Woong Kim; Hyun Woo Koo
- Web page: https://patentgrep.com/patent/US10481640B2

## CPC

- G02F 1/133305: {Flexible substrates, e.g. plastics, organic film}
- G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable}
- G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED}
- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/87: {Passivation; Containers; Encapsulations}
- H10K 77/111: {Flexible substrates}
- H10K 59/873: {Encapsulations}
- Y02E 10/549: Organic PV cells
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A display device including a display panel that displays an image, and a supporting layer positioned on one surface of the display panel. The supporting layer includes a plurality of magnets that are engageable with each other.

## Claims

### Claim 1

A display device, comprising:
a display panel that displays an image; and
a supporting layer positioned on one surface of the display panel,
wherein:
the supporting layer includes a plurality of magnets that are engageable with each other,
the plurality of magnets include a first magnet including a groove and a second magnet including a protrusion,
the display device is changeable between a rolled state and an unrolled state, wherein in the unrolled state, the protrusion of the second magnet is inserted into the groove of the first magnet,
and the supporting layer is disposed continuously along a direction parallel to a rolling axis of the display device.

### Claim 2 (depends on 1)

The display device as claimed in claim 1, wherein:
the first magnet and the second magnet are elongated in the direction parallel to a rolling axis of the display device.

### Claim 3 (depends on 2)

The display device as claimed in claim 2, wherein:
the groove of the first magnet and the protrusion of the second magnet are continuously present along an entire length of the first magnet and the second magnet.

### Claim 4 (depends on 2)

The display device as claimed in claim 2, wherein:
the groove of the first magnet and the protrusion of the second magnet are discontinuously present throughout an entire length of the first magnet and the second magnet.

### Claim 5 (depends on 1)

The display device as claimed in claim 1, further comprising
an elastic gel layer between the display panel and the supporting layer.

### Claim 6 (depends on 5)

The display device as claimed in claim 5, wherein
the elastic gel layer includes a hybrid gel of a polyacrylamide gel and an alginate gel.

### Claim 7 (depends on 5)

The display device as claimed in claim 5, wherein:
the elastic gel layer includes a modified gel that provides adhesiveness to a surface of the elastic gel layer.

### Claim 8 (depends on 5)

The display device as claimed in claim 5, wherein:
the elastic gel layer has toughness of about 5,000 to about 9,000 J/m2.

### Claim 9 (depends on 5)

The display device as claimed in claim 5, wherein:
the elastic gel layer includes an upper elastic gel layer and a lower elastic gel layer, each being between the display panel and the supporting layer, and
a rubber layer is between the display panel and the lower elastic gel layer.

### Claim 10 (depends on 9)

The display device as claimed in claim 9, wherein:
the upper elastic gel layer is between the display panel and the rubber layer.

### Claim 11 (depends on 10)

The display device as claimed in claim 10, wherein:
the upper elastic gel layer includes a hybrid gel of a polyacrylamide gel and an alginate gel.

### Claim 12 (depends on 10)

The display device as claimed in claim 10, wherein:
a surface of the upper elastic gel layer includes a modified gel that has adhesiveness.

### Claim 13 (depends on 1)

The display device as claimed in claim 1, further comprising:
a rubber layer on the display panel.

### Claim 14 (depends on 13)

The display device as claimed in claim 13, further comprising:
a window layer on the rubber layer.

### Claim 15 (depends on 1)

The display device as claimed in claim 1, further comprising:
an elastic gel layer on the display panel; and
a window layer on the elastic gel layer.