# US 11,999,157 B2 · Transfer film, laminate, acoustic speaker, and method for producing laminate

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- Number: US 11,999,157 B2
- Document ID: US11999157B2
- Status: Granted
- Kind: B2
- Application number: 17/847,579
- Filed: 2022-06-23
- Published: 2023-01-26
- Granted: 2024-06-04
- Earliest claimed: 2021-06-24
- Assignees: FUJIFILM Corporation
- Applicants: FUJIFILM Corporation
- Inventors: Kentaro Toyooka; Masaya Suzuki
- Web page: https://patentgrep.com/patent/US11999157B2

## CPC

- B32B 7/023: Optical properties
- B32B 27/08: of synthetic resin
- B32B 27/16: specially treated, e.g. irradiated
- B32B 37/025: {Transfer laminating}
- C08F 220/1806: {C6-(meth)acrylate, e.g. (cyclo)hexyl (meth)acrylate or phenyl (meth)acrylate}
- C09D 4/06: {Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond} in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
- C09D 5/006: {Anti-reflective coatings}
- G02B 1/11: Anti-reflection coatings
- G02F 1/133502: {Antiglare, refractive index matching layers}
- B32B 2250/05: 5 or more layers
- B32B 2264/102: Oxide or hydroxide
- B32B 2307/202: Conductive
- B32B 2307/412: Transparent
- B32B 2307/418: Refractive
- B32B 2307/732: Dimensional properties
- B32B 2457/00: Electrical equipment
- B32B 2551/00: Optical elements
- G02F 2201/38: Anti-reflection arrangements
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- 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

## Abstract

An object of the present invention is to provide a transfer film capable of forming a laminate exhibiting excellent antireflection performance in a case of being transferred to a member to be transferred exhibiting a high refractive index. Another object of the present invention is to provide a laminate, an acoustic speaker, and a method for manufacturing a laminate. A transfer film including a temporary support and a photosensitive composition layer, and further including a first layer having a lower refractive index than the refractive index of the photosensitive composition layer between the temporary support and the photosensitive composition layer, in which a refractive index of the first layer is 1.45 or less.

## Claims

### Claim 1

A laminate comprising, in the following order:
a substrate;
a layer with a high refractive index;
a second refractive index-adjusting layer;
a resin layer; and
a first refractive index-adjusting layer,
wherein a refractive index of the layer with a high refractive index is higher than a refractive index of the resin layer,
the second refractive index-adjusting layer exhibits a higher refractive index than the refractive index of the resin layer and a lower refractive index than the refractive index of the layer with a high refractive index,
a refractive index of the first refractive index-adjusting layer is lower than the refractive index of the resin layer,
the refractive index of the first refractive index-adjusting layer is 1.45 or less,
the layer with a high refractive index is a transparent conductive layer,
the laminate comprises a fourth refractive index-adjusting layer on a side opposite to the resin layer side of the second refractive index-adjusting layer, and
the fourth refractive index-adjusting layer exhibits a lower refractive index than the refractive index of the resin layer.

### Claim 2 (depends on 1)

The laminate according to claim 1,
wherein a refractive index on a surface of the second refractive index-adjusting layer on the resin layer side is lower than a refractive index on a surface of the second refractive index-adjusting layer on a side opposite to the resin layer side.

### Claim 3 (depends on 1)

The laminate according to claim 1,
wherein a refractive index on a surface of the first refractive index-adjusting layer on a side opposite to the resin layer side is lower than a refractive index on a surface of the first refractive index-adjusting layer on the resin layer side.

### Claim 4 (depends on 1)

The laminate according to claim 1,
wherein the resin layer is a cured product layer formed by curing a photosensitive composition.

### Claim 5 (depends on 1)

The laminate according to claim 1,
wherein the resin layer is transparent.

### Claim 6 (depends on 1)

The laminate according to claim 1,
wherein the resin layer is a cured product layer formed by curing a photosensitive composition, and
the layer with a high refractive index is a transparent conductive layer.

### Claim 7 (depends on 6)

The laminate according to claim 6,
wherein the layer with a high refractive index has a thickness of 0.01 to 0.4 μm,
the resin layer has a thickness of 0.60 to 15 μm,
the first refractive index-adjusting layer has a thickness of 10 to 200 nm, and
the second refractive index-adjusting layer has a thickness of 20 to 200 nm.

### Claim 8 (depends on 1)

An acoustic speaker comprising the laminate according to claim 1.

### Claim 9 (depends on 2)

The laminate according to claim 2, further comprising a fourth refractive index-adjusting layer on a side opposite to the resin layer side of the second refractive index-adjusting layer,
wherein the fourth refractive index-adjusting layer exhibits a lower refractive index than the refractive index of the resin layer.

### Claim 10 (depends on 2)

The laminate according to claim 2,
wherein a refractive index on a surface of the first refractive index-adjusting layer on a side opposite to the resin layer side is lower than a refractive index on a surface of the first refractive index-adjusting layer on the resin layer side.

### Claim 11

A laminate comprising, in the following order:
a substrate;
a layer with a high refractive index;
a second refractive index-adjusting layer;
a resin layer; and
a first refractive index-adjusting layer,
wherein a refractive index of the layer with a high refractive index is higher than a refractive index of the resin layer,
the second refractive index-adjusting layer exhibits a higher refractive index than the refractive index of the resin layer and a lower refractive index than the refractive index of the layer with a high refractive index,
a refractive index of the first refractive index-adjusting layer is lower than the refractive index of the resin layer,
the refractive index of the first refractive index-adjusting layer is 1.45 or less,
the layer with a high refractive index is a transparent conductive layer, and
the laminate comprises a third refractive index-adjusting layer exhibiting a higher refractive index than the refractive index of the resin layer between the first refractive index-adjusting layer and the resin layer.

### Claim 12

A laminate comprising, in the following order:
a substrate;
a layer with a high refractive index;
a second refractive index-adjusting layer;
a resin layer; and
a first refractive index-adjusting layer,
wherein a refractive index of the layer with a high refractive index is higher than a refractive index of the resin layer,
the second refractive index-adjusting layer exhibits a higher refractive index than the refractive index of the resin layer and a lower refractive index than the refractive index of the layer with a high refractive index,
a refractive index of the first refractive index-adjusting layer is lower than the refractive index of the resin layer,
the refractive index of the first refractive index-adjusting layer is 1.45 or less,
the layer with a high refractive index is a transparent conductive layer,
a refractive index on a surface of the second refractive index-adjusting layer on the resin layer side is lower than a refractive index on a surface of the second refractive index-adjusting layer on a side opposite to the resin layer side, and
the laminate comprises a third refractive index-adjusting layer exhibiting a higher refractive index than the refractive index of the resin layer between the first refractive index-adjusting layer and the resin layer.

### Claim 13

A laminate comprising, in the following order:
a substrate;
a layer with a high refractive index;
a second refractive index-adjusting layer;
a resin layer; and
a first refractive index-adjusting layer,
wherein a refractive index of the layer with a high refractive index is higher than a refractive index of the resin layer,
the second refractive index-adjusting layer exhibits a higher refractive index than the refractive index of the resin layer and a lower refractive index than the refractive index of the layer with a high refractive index,
a refractive index of the first refractive index-adjusting layer is lower than the refractive index of the resin layer,
the refractive index of the first refractive index-adjusting layer is 1.45 or less,
the layer with a high refractive index is a transparent conductive layer,
the laminate comprises a fourth refractive index-adjusting layer on a side opposite to the resin layer side of the second refractive index-adjusting layer,
the fourth refractive index-adjusting layer exhibits a lower refractive index than the refractive index of the resin layer, and
the laminate comprises a third refractive index-adjusting layer exhibiting a higher refractive index than the refractive index of the resin layer between the first refractive index-adjusting layer and the resin layer.

### Claim 14

A laminate comprising, in the following order:
a substrate;
a layer with a high refractive index;
a second refractive index-adjusting layer;
a resin layer; and
a first refractive index-adjusting layer,
wherein a refractive index of the layer with a high refractive index is higher than a refractive index of the resin layer,
the second refractive index-adjusting layer exhibits a higher refractive index than the refractive index of the resin layer and a lower refractive index than the refractive index of the layer with a high refractive index,
a refractive index of the first refractive index-adjusting layer is lower than the refractive index of the resin layer,
the refractive index of the first refractive index-adjusting layer is 1.45 or less,
the layer with a high refractive index is a transparent conductive layer,
a refractive index on a surface of the first refractive index-adjusting layer on a side opposite to the resin layer side is lower than a refractive index on a surface of the first refractive index-adjusting layer on the resin layer side, and
the laminate comprises a third refractive index-adjusting layer exhibiting a higher refractive index than the refractive index of the resin layer between the first refractive index-adjusting layer and the resin layer.