# US 11,908,596 B2 · Transparent conductive layer, transparent conductive sheet, touch sensor, light control element, photoelectric conversion element, heat ray control member, antenna, electromagnetic wave shield member, and image display device

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- Number: US 11,908,596 B2
- Document ID: US11908596B2
- Status: Granted
- Kind: B2
- Application number: 17/797,027
- Filed: 2021-01-29
- Published: 2023-03-09
- Granted: 2024-02-20
- Earliest claimed: 2020-02-03
- Assignees: Nitto Denko Corporation
- Applicants: Nitto Denko Corporation
- Inventors: Nozomi Fujino
- Web page: https://patentgrep.com/patent/US11908596B2

## CPC

- H01B 5/14: comprising conductive layers or films on insulating-supports
- H01B 1/08: oxides
- C23C 14/08: Oxides (C23C14/10 takes precedence)
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)

## Abstract

A transparent conductive layer 3 includes a first main surface 5 exposed to the outside, and a second main surface 6 opposite to the first main surface 5 in a thickness direction. The transparent conductive layer 3 is single layer extending in a plane direction. The transparent conductive layer 3 has a first grain boundary 7 in which two end edges 23 in a cross-sectional view are open to the first main surface 5, and an intermediate region 25 between both end edges 23 is not in contact with the second main surface 6, and has a first crystal grain 31 partitioned by the first grain boundary 7 and facing only the first main surface 5.

## Claims

### Claim 1

A laminate comprising: a substrate sheet or a functional layer; and a transparent conductive layer,
wherein the transparent conductive layer includes a first main surface which is exposed to atmosphere, and a second main surface opposite to the first main surface in a thickness direction and in direct contact with one surface in the thickness direction of the substrate sheet or functional layer,
the transparent conductive layer is a single continuous layer extending in a plane direction perpendicular to the thickness direction,
the transparent conductive layer has a grain boundary in which two end edges in a cross-sectional view are open to the first main surface, and an intermediate region between both end edges is not in contact with the second main surface,
the transparent conductive layer has a first crystal grain partitioned by the grain boundary and facing only the first main surface,
the substrate sheet consists of at least one selected from the group consisting of polyester resin, (meth)acrylic resin, olefin resin, polycarbonate resin, polyether sulfone resin, polyarylate resin, melamine resin, polyamide resin, polyimide resin, cellulose resin, polystyrene resin, and norbornene resin, and
the functional layer includes an organic material.

### Claim 2 (depends on 1)

The laminate according to claim 1,
wherein the transparent conductive layer further has a second grain boundary open to a side surface connecting an end edge of the first main surface to an end edge of the second main surface.

### Claim 3 (depends on 1)

The laminate according to claim 1, wherein a material for the transparent conductive layer is a tin-containing oxide.

### Claim 4 (depends on 1)

A touch sensor comprising:
the laminate according to claim 1.

### Claim 5 (depends on 1)

A light control element comprising:
the laminate according to claim 1.

### Claim 6 (depends on 1)

A photoelectric conversion element comprising:
the laminate according to claim 1.

### Claim 7 (depends on 1)

A heat ray control member comprising:
the laminate according to claim 1.

### Claim 8 (depends on 1)

An antenna comprising:
the laminate according to claim 1.

### Claim 9 (depends on 1)

An electromagnetic wave shield member comprising:
the laminate according to claim 1.

### Claim 10 (depends on 1)

An image display device comprising:
the laminate according to claim 1.