# US 10,480,751 B2 · Wavelength conversion laminated film

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- Number: US 10,480,751 B2
- Document ID: US10480751B2
- Status: Granted
- Kind: B2
- Application number: 15/956,240
- Filed: 2018-04-18
- Published: 2018-08-23
- Granted: 2019-11-19
- Earliest claimed: 2015-10-20
- Assignees: FUJIFILM Corporation
- Applicants: FUJIFILM Corporation
- Inventors: Satoshi Kuniyasu; Tatsuya Oba; Masayuki Kusumoto
- Web page: https://patentgrep.com/patent/US10480751B2

## CPC

- F21V 9/30: Elements containing photoluminescent material distinct from or spaced from the light source (shades F21V1/17; globes, bowls or cover glasses F21V3/08, F21V3/12; refractors F21V5/10; reflectors F21V7/26, F21V7/30; elements with provision for controlling the spectral properties or intensity F21V9/40)
- F21K 9/64: using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
- F21V 9/08: for producing coloured light, e.g. monochromatic; for reducing intensity of light (with provision for controlling the colour F21V9/40)
- F21V 9/45: by adjustment of photoluminescent elements
- G02B 5/20: Filters (polarising elements G02B5/30)
- G02F 1/133602: {Direct backlight}
- G02F 1/133615: {Edge-illuminating devices, i.e. illuminating from the side}
- G02F 1/133614: {using photoluminescence, e.g. phosphors illuminated by UV or blue light}
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- 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

The wavelength conversion laminated film includes a laminate which has a wavelength conversion layer containing a phosphor and a gas barrier layer laminated on both the main surfaces of the wavelength conversion layer and an end face sealing layer which covers at least end faces of the wavelength conversion layer among end faces of the laminate, in which the end face sealing layer includes, from the side of the end faces of the laminate, a first metal layer coming into contact with the end faces, a resin layer, and a second metal layer in this order.

## Claims

### Claim 1

A wavelength conversion laminated film comprising:
a laminate which has a wavelength conversion layer containing a phosphor and a gas barrier layer laminated on both the main surfaces of the wavelength conversion layer; and
an end face sealing layer which covers at least end faces of the wavelength conversion layer among end faces of the laminate,
wherein the end face sealing layer includes, from the side of the end faces of the laminate, a first metal layer coming into contact directly with the end faces of the laminate, a resin layer, and a second metal layer in this order.

### Claim 2 (depends on 1)

The wavelength conversion laminated film according to claim 1,
wherein the second metal layer is formed to cover an outer surface of the resin layer.

### Claim 3 (depends on 1)

The wavelength conversion laminated film according to claim 1,
wherein the resin layer is covered with the first metal layer and the second metal layer.

### Claim 4 (depends on 1)

The wavelength conversion laminated film according to claim 1,
wherein the end face sealing layer covers the end faces of the laminate.

### Claim 5 (depends on 2)

The wavelength conversion laminated film according to claim 2,
wherein the end face sealing layer covers the end faces of the laminate.

### Claim 6 (depends on 3)

The wavelength conversion laminated film according to claim 3,
wherein the end face sealing layer covers the end faces of the laminate.

### Claim 7 (depends on 1)

The wavelength conversion laminated film according to claim 1,
wherein a thickness of the first metal layer is 0.01 μm to 1 μm.

### Claim 8 (depends on 1)

The wavelength conversion laminated film according to claim 1,
wherein the first metal layer is a layer formed by vapor-phase deposition.

### Claim 9 (depends on 1)

The wavelength conversion laminated film according to claim 1,
wherein an oxygen permeability of the resin layer is equal to or lower than 50 cc/(m2·day·atm).

### Claim 10 (depends on 1)

The wavelength conversion laminated film according to claim 1,
wherein the resin layer contains metal nanoparticles, and
the second metal layer is an electroless plating layer.

### Claim 11 (depends on 1)

The wavelength conversion laminated film according to claim 1,
wherein the phosphor is quantum dot.