# US 11,309,515 B2 · Conductive film and display device comprising the same

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,309,515 B2
- Document ID: US11309515B2
- Status: Granted
- Kind: B2
- Application number: 16/942,152
- Filed: 2020-07-29
- Published: 2021-05-13
- Granted: 2022-04-19
- Earliest claimed: 2019-11-12
- Assignees: LG Display Co., Ltd.
- Applicants: LG Display Co., Ltd.
- Inventors: JongHyun Park
- Web page: https://patentgrep.com/patent/US11309515B2

## CPC

- H10K 71/60: Forming conductive regions or layers, e.g. electrodes
- G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- H10K 59/40: OLEDs integrated with touch screens
- H10K 59/8051: {Anodes}
- H10K 59/80524: {Transparent cathodes, e.g. comprising thin metal layers}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10K 85/1135: {Polyethylene dioxythiophene [PEDOT]; Derivatives thereof}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

The present disclosure relates to a conductive film and a display device including the conductive film. More specifically, as the conductive film includes a conductive polymer layer and a plurality of metal nanowires and includes a network structure inserted in the conductive polymer layer, it is possible to provide the conductive film with high light transmittance and excellent electrical conductivity and the display device including the conductive film.

## Claims

### Claim 1

A conductive film, comprising:
a base layer;
a conductive polymer layer on the base layer and including a conductive polymer; and
a network structure positioned within the conductive polymer layer,
wherein the network structure includes a plurality of metal nanowires,
wherein the conductive polymer is a conjugated polymer of an anionic polymer and a cationic polymer, and
wherein the cationic polymer includes dextran sulfate.

### Claim 2 (depends on 1)

The conductive film according to claim 1, wherein the anionic polymer includes poly(3,4-ethylenedixoythiophene).

### Claim 3 (depends on 1)

The conductive film according to claim 1, wherein the conductive polymer has a conductivity of about 9000 S/cm (Siemens per centimeter) or more.

### Claim 4 (depends on 1)

The conductive film according to claim 1, wherein the conductive polymer has a light transmittance of about 85% or more.

### Claim 5 (depends on 1)

The conductive film according to claim 1, wherein the metal nanowires are silver nanowires.

### Claim 6 (depends on 1)

The conductive film according to claim 1, wherein the network structure includes a junction portion in which two adjacent metal nanowires of a plurality of metal nanowires overlap each other.

### Claim 7 (depends on 1)

The conductive film according to claim 1, wherein the network structure has a sheet resistance of 20Ω/□ (ohms per square) or less.

### Claim 8 (depends on 1)

The conductive film according to claim 1, wherein the network structure has a light transmittance of about 90% or more.

### Claim 9 (depends on 1)

The conductive film according to claim 1, wherein the conductive polymer is located in a pore between the plurality of metal nanowires forming the network structure.

### Claim 10

A display device, comprising:
a conductive film,
the conductive film including:
a base layer;
a conductive polymer layer on the base layer and including a conductive polymer; and
a plurality of overlapping metallic structures included in the conductive polymer layer, wherein the metallic structures have width dimensions on the order of a nanometer,
wherein the conductive polymer is a conjugated polymer of an anionic polymer and a cationic polymer, and
wherein the cationic polymer includes dextran sulfate.

### Claim 11 (depends on 10)

The display device according to claim 10, wherein the display device further comprising an organic light emitting element,
wherein the organic light emitting element includes a first electrode, a light emitting layer, and a second electrode, and
wherein at least one of the first electrode and the second electrode include the conductive film.

### Claim 12 (depends on 10)

The display device according to claim 10, wherein the display device further comprising a touch panel including a plurality of touch electrodes, and
wherein at least one of the plurality of touch electrodes include the conductive film.

### Claim 13 (depends on 10)

The display device according to claim 10, wherein each of the metallic structures are discrete from each other.

### Claim 14 (depends on 13)

The display device according to claim 13, wherein at least one of the metallic structure overlaps with at least one other metallic structure in a majority of the area of network.

### Claim 15

A conductive film, comprising:
a base layer;
a conductive polymer layer on the base layer and including a conductive polymer; and
a network structure positioned within the conductive polymer layer,
wherein the network structure includes a plurality of metal nanowires, and
wherein the conductive polymer has a conductivity of about 9000 S/cm (Siemens per centimeter) or more.