# US 2014/0191211 A1 · Electrode substrate and planar optoelectronic device

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- Number: US 2014/0191211 A1
- Document ID: US20140191211A1
- Status: Published application
- Kind: A1
- Application number: 14/110,534
- Filed: 2012-03-23
- Published: 2014-07-10
- Earliest claimed: 2011-04-08
- Assignees: Sefar AG
- Inventors: Peter Chabrecek; Uriel Sonderegger
- Web page: https://patentgrep.com/patent/US20140191211A1

## CPC

- D03D 1/0088: {Fabrics having an electronic function}
- H05K 1/0274: {Optical details, e.g. printed circuits comprising integral optical means (H05K1/0269 takes precedence; coupling light guides with opto-electronic components G02B6/42)}
- H05K 1/038: {Textiles (used as reinforcing materials for organic insulating substrates H05K1/0366)}
- H05K 1/095: {for polymer thick films, i.e. having a permanent organic polymeric binder}
- H05K 1/189: characterised by the use of flexible or folded printed circuits
- H10F 77/20: Electrodes
- H10H 20/831: characterised by their shape
- H10K 30/82: Transparent electrodes, e.g. indium tin oxide [ITO] electrodes
- H10K 50/805: Electrodes
- H10K 71/00: Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K 71/60: Forming conductive regions or layers, e.g. electrodes
- H10K 77/10: Substrates, e.g. flexible substrates
- D10B 2401/16: antistatic; conductive
- H05K 2201/0108: Transparent
- H05K 2201/0257: Nanoparticles
- H05K 2201/0281: Conductive fibers
- H05K 2201/029: Woven fibrous reinforcement or textile
- H05K 2201/10106: Light emitting diode [LED]
- H10K 77/111: {Flexible substrates}
- H10K 85/1135: {Polyethylene dioxythiophene [PEDOT]; Derivatives thereof}
- Y02E 10/549: Organic PV cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- Y10T 29/49155: Manufacturing circuit on or in base
- D03D: WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Electrode substrate for an optoelectronic device having a fabric (10) that includes electrically conductive (14; 56) as well as non-conductive (12; 50) and transparent fibres wherein the fabric is furnished over a wide area with a transparent, electrically conductive coating (26, 28, 58) in such manner that projecting or exposed portions of the electrically conductive fibres cooperate with the conductive coating in order to produce electrical contacts, wherein the conductive coating has a layer thickness that is smaller than a mean diameter of the electrically conductive and electrically non-conductive fibres of the fabric, a fabric weave of the electrically conductive fibres of the fabric is organized in such a manner that in order to create the protruding portions, the fibres encompass at least 2 of the non-conductive fibres that extend transversely in the manner of a twill weave, the fabric is embedded in the coating in such manner that portions (20; 22; 56) of the conductive fibres protrude from a non-conducting polymer material of the coating and/or are exposed, at least on one side of the coating, and the coating is applied to a polymeric, electrically non-conductive and transparent carrier film that is situated opposite the conductive coating that is applied to one side relative to the fabric.

## Claims

### Claim 1

Electrode substrate for an optoelectronic device having
a fabric (10) that comprises electrically conductive (14; 56) as well as non-conductive (12; 50) and transparent fibres
and a coating (16; 52) made from a transparent, electrically non-conductive polymer material,
wherein the coating is furnished over a wide area with a transparent, electrically conductive coating (26, 28, 58) in such manner that projecting or exposed portions cooperate with the conductive coating in order to produce electrical contacts, wherein the conductive coating has a layer thickness that is smaller than a mean diameter of the electrically conductive and electrically non-conductive fibres of the fabric,
a fabric weave of the electrically conductive fibres of the fabric is organized in such a manner that in order to create the protruding portions the fibres encompass at least 2 of the non-conductive fibres that extend transversely in the manner of a twill weave,
wherein
the fabric is embedded in the coating in such manner that portions (20; 22; 56) of the conductive fibres protrude from the non-conducting polymer material of the coating and/or are exposed, at least on one side of the coating,
and the coating is applied to a polymeric, electrically non-conductive and transparent carrier film that is situated opposite the conductive coating that is applied to one side relative to the fabric.

### Claim 2 (depends on 1)

The substrate according to claim 1, wherein the ratio of layer thickness of the conductive coating relative to diameter of the fibres is less than 1:10.

### Claim 3 (depends on 1)

The substrate according to claim 1, wherein the electrically conductive fibres and/or the electrically non-conductive fibres have a diameter in the range between 10 μm and 200 μm.

### Claim 4 (depends on 1)

The substrate according to claim 1, wherein the conductive coating comprises a transparent polymer and/or a transparent oxide, carbon nanotubes, or metal nanoparticles, and/or is applied to the coating in multiple layers.

### Claim 5 (depends on 1)

The substrate according to claim 1, wherein the electrically conductive fibres in the fabric extend parallel with each other in such manner that from 1 to 600 non-conductive fibres extend between two adjacent electrically conductive fibres, and/or a distance between two adjacent electrically conductive fibres is between 0.2 mm and 200 mm.

### Claim 6 (depends on 1)

A planar optoelectronic device in which at least one flat electrode is created by the electrode substrate according to claim 1.

### Claim 7

A method for producing an electrode substrate, comprising the steps of:
Providing at least one fabric comprising non-conductive, transparent fibres (50)
Providing a plurality of electrically conducting fibres (56) extending parallel to each other and at least on one flat side of the fabric, wherein the electrically conductive fibres extend in only one of the directions in the fabric and a fabric weave of the electrically conductive fibres of the fabric is organized in such a manner that in order to create protruding portions, the fibres encompass at least 2 of the non-conductive fibres that extend transversely in the manner of a twill weave,
Embedding the fabric and the electrically conductive fibres in a coating (52) of a transparent, electrically non-conductive polymer material that is deposited on a transparent, polymeric, electrically non-conductive carrier film, so that portions of the conductive fibres protrude from the non-conductive polymer material of the coating on one side of the coating and/or are exposed,
Removing prominent material from the non-conducting polymer material of the coating so that the electrically conductive fibres form flat contact surfaces at least in sections, wherein the contact surfaces are preferably in a plane with a flat surface of the non-conducting polymer coating, and
covering the coating with a transparent, electrically conductive conductor coating (58).

### Claim 8 (depends on 1)

An optoelectronic applications selected from the group consisting of OLED, OPV, displays and touch screens, and comprising the substrate according to claim 1.

### Claim 9 (depends on 1)

The substrate according to claim 1, wherein the projecting or exposed portions of the electrically conductive fibres engage and/or protrude into the conductive coating, and/or form a planar contact surface for the conductive coating.

### Claim 10 (depends on 1)

The substrate according to claim 1, wherein the electrically conductive fibres encompass between 3 and 6 of the non-conductive fibres that extend transversely.

### Claim 11 (depends on 2)

The substrate according to claim 2, wherein the ratio is less than 1:100.

### Claim 12 (depends on 3)

The substrate according to claim 3, wherein the electrically conductive fibres and/or the electrically non-conductive fibres have a diameter in the range between 20 μm to 80 μm.

### Claim 13 (depends on 4)

The substrate according to claim 4, wherein the conductive coating comprises silver nanoparticles.

### Claim 14 (depends on 5)

The substrate according to claim 5, wherein the electrically conductive fibres in the fabric extend parallel with each other in such manner that from 2 to 10 non-conductive fibres extend between two adjacent electrically conductive fibres, and/or a distance between two adjacent electrically conductive fibres is between 0.5 mm and 2.0 mm.

### Claim 15 (depends on 7)

The method of claim 7, wherein the electrically conductive fibres extend in the fabric only in the weft direction.

### Claim 16 (depends on 7)

The method of claim 7, wherein the fibres encompass between 3 and 6 of the non-conductive fibres that extend transversely.

### Claim 17 (depends on 7)

The method of claim 7, wherein the removing step comprises removing the prominent material by grinding and/or polishing.