# US 10,319,909 B2 · Method for manufacturing organic electronic element

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- Number: US 10,319,909 B2
- Document ID: US10319909B2
- Status: Granted
- Kind: B2
- Application number: 15/541,599
- Filed: 2015-12-18
- Published: 2018-01-04
- Granted: 2019-06-11
- Earliest claimed: 2015-01-07
- Assignees: Sumitomo Chemical Company, Limited
- Applicants: Sumitomo Chemical Company, Limited
- Inventors: Yasuo Matsumoto
- Web page: https://patentgrep.com/patent/US10319909B2

## CPC

- H10K 71/13: using printing techniques, e.g. ink-jet printing or screen printing
- H10D 30/67: Thin-film transistors [TFT] {(Stacked nanowire, nanosheet or nanoribbon FETs H10D30/501)}
- H10K 71/191: {characterised by provisions for the orientation or alignment of the layer to be deposited}
- H10K 77/111: {Flexible substrates}
- B05D 1/26: performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
- B05D 2201/00: Polymeric substrate or laminate
- B05D 2252/02: of indefinite length
- H10K 10/40: Organic transistors
- H10K 30/50: Photovoltaic [PV] devices
- H10K 50/10: OLEDs or polymer light-emitting diodes [PLED]
- Y02E 10/549: Organic PV cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- 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

## Abstract

A method for manufacturing an organic electronic element capable of reducing unevenness in film thickness of a coating film is disclosed. A method for manufacturing an organic electronic element according to an embodiment of the invention is a method for manufacturing an organic electronic element including a functional layer containing an organic material, including a coating step of forming a functional layer by horizontally conveying a base material (110) having flexibility using a roll-to-roll process and coating a coating solution containing an organic material onto the base material (110) using a slit coat applicator (30) disposed above the base material (110), wherein in the coating step, the base material (110) is floated by air using an air floating stage (20) disposed below the base material (110) and the coating solution is coated onto the base material (110).

## Claims

### Claim 1

A method of manufacturing an organic electronic element including a functional layer containing an organic material, comprising:
a coating step of coating a coating solution containing the organic material onto a base material having flexibility, using a slit coat applicator disposed above the base material, to form the functional layer,
wherein in the coating step, coating solution is coated onto the base material while the base material is horizontally conveyed using a roll-to-roll process and floated by air using an air floating stage disposed below the base material, and
wherein a vertical vibration amount of the base material is equal to or smaller than 70 μm, and an air flow speed generated by the air floating stage is equal to or greater than 0.001 m/sec ad equal to or less than 0.3 m/sec.

### Claim 2 (depends on 1)

The method of manufacturing the organic electronic element according to claim 1,
wherein the air floating stage is formed of a porous material.

### Claim 3 (depends on 1)

The method of manufacturing the organic electronic element according to claim 1,
wherein a gap between the air floating stage and the base material is equal to or larger than 30 μm and equal to or smaller than 1 mm.

### Claim 4 (depends on 1)

The method of manufacturing the organic electronic element according to claim 1,
wherein a viscosity of the coating solution is equal to or larger than 1 cp and equal to or smaller than 20 cp.

### Claim 5 (depends on 1)

The method of manufacturing the organic electronic element according to claim 1,
wherein a tensile force of the base material is equal to or larger than 20 N and equal to or smaller than 150 N.

### Claim 6 (depends on 1)

The method of manufacturing the organic electronic element according to claim 1,
wherein the organic electronic element is an organic EL element.

### Claim 7 (depends on 1)

The method of manufacturing the organic electronic element according to claim 1,
wherein the organic electronic element is an organic solar cell.

### Claim 8 (depends on 1)

The method of manufacturing the organic electronic element according to claim 1,
wherein the organic electronic element is an organic transistor.