# US 10,371,869 B2 · Anti-scratch film for flexible display

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- Number: US 10,371,869 B2
- Document ID: US10371869B2
- Status: Granted
- Kind: B2
- Application number: 15/422,893
- Filed: 2017-02-02
- Published: 2017-05-25
- Granted: 2019-08-06
- Earliest claimed: 2012-11-29
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Tae-Woong Kim; Hyun-Woo Koo; Young-Gug Seol; Patrick Lee
- Web page: https://patentgrep.com/patent/US10371869B2

## CPC

- G02B 1/105
- G02B 1/10: Optical coatings produced by application to, or surface treatment of, optical elements (G02B1/08 takes precedence)
- G02B 1/14: Protective coatings, e.g. hard coatings
- G02F 1/134309: {characterised by their geometrical arrangement}
- H10K 59/873: {Encapsulations}
- G02F 2201/50: Protective arrangements
- Y10T 428/24612: Composite web or sheet
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An anti-scratch film, including a film base and an anti-scratch layer on one side of the film base. The anti-scratch layer includes a plurality of protrusions.

## Claims

### Claim 1

A display device comprising:
a substrate;
a display element layer on the substrate;
an encapsulation layer on the display element layer; and
an anti-scratch film on the encapsulation layer,
wherein the anti-scratch film comprises a film base and a plurality of anti-scratch protrusions directly on one side of the film base, the plurality of anti-scratch protrusions forming an outermost surface of the display device,
wherein adjacent ones of the plurality of anti-scratch protrusions are spaced from each other such that a portion of the film base is exposed between the adjacent ones of the plurality of anti-scratch protrusions, and
wherein the anti-scratch protrusions comprise a material different from a material of the film base.

### Claim 2 (depends on 1)

The display device of claim 1, wherein each of the plurality of anti-scratch protrusions comprises only a single inorganic material.

### Claim 3 (depends on 2)

The display device of claim 2, wherein the inorganic material comprises at least one selected from the group consisting of an oxide, a nitride, and a nitric-oxide.

### Claim 4 (depends on 1)

The display device of claim 1, wherein the film base comprises an organic material.

### Claim 5 (depends on 4)

The display device of claim 4, wherein the organic material comprises at least one selected from the group consisting of a polyester film, a polyethylene film, a polypropylene film, a tri-acetyl cellulose film, a polyvinyl chloride film, a polyvinyl alcohol film, a polyimide film, a cyclo-olefin resin film, a polycarbonate film, a polyethylene terephthalate film, a polyethylene naphthalate film, a polyether sulfone film, a polyimide film, an epoxy resin film, a phenol resin film, a melamine resin film, a polyurethane film, and/or an acrylic resin film.

### Claim 6 (depends on 1)

The display device of claim 1, wherein the plurality of anti-scratch protrusions are arranged in a repeating pattern.

### Claim 7 (depends on 1)

The display device of claim 1, wherein the one side of the film base extends in a first direction and a second direction, and
wherein adjacent ones of the plurality of anti-scratch protrusions are spaced from each other in both the first and second directions.

### Claim 8 (depends on 1)

The display device of claim 1, wherein the display element layer comprises:
a first electrode;
an active layer on the first electrode; and
a second electrode on the active layer.

### Claim 9 (depends on 8)

The display device of claim 8, wherein the active layer is an organic emission layer.

### Claim 10 (depends on 8)

The display device of claim 8, wherein the active layer is a liquid crystal layer.

### Claim 11 (depends on 1)

The display device of claim 1, wherein the film base is transparent.

### Claim 12 (depends on 1)

The display device of claim 1, further comprising an adhesive layer on another side of the film base.

### Claim 13 (depends on 1)

The display device of claim 1, wherein a shape of each of the plurality of anti-scratch protrusions is independently selected from the group consisting of a lens shape, a pyramidal shape, a conical shape, a prismatic shape, and a cylindrical shape.

### Claim 14 (depends on 1)

The display device of claim 1, wherein a height of each of the plurality of anti-scratch protrusions is from 0.1 μm to 100 μm.

### Claim 15 (depends on 1)

The display device of claim 1, wherein each of the plurality of anti-scratch protrusions has a diameter of from 10 μm to 1mm with a longest radius being on a base side of the anti-scratch protrusion.

### Claim 16 (depends on 1)

The display device of claim 1, wherein a distance between adjacent ones of the plurality of anti-scratch protrusions is from 10 μm to 1mm.