Laminate, display device, and organic electroluminescent display device

Patent metadata

Field	Value
Publication number	US-2023012898-A1
Application number	US-202217853228-A
Country	US
Kind code	A1
Filing date	Jun 29, 2022
Priority date	Feb 13, 2020
Publication date	Jan 19, 2023
Grant date	—

Abstract

A display device including a laminate includes a wavelength selective absorption layer containing a resin, a dye including at least one of four specific dyes A to D, and an antifading agent for a dye, and includes a gas barrier layer, and a wavelength conversion material; the laminate includes a wavelength selective absorption layer containing a resin, a dye, and an electron migration-type antifading agent in which the energy level of the highest occupied molecular orbital and the lowest unoccupied molecular orbital satisfy a specific relational expression in relation to the dye, and includes the gas barrier layer; an organic electroluminescent display device includes this laminate. The gas barrier layer contains a crystalline resin, has a layer thickness of 0.1 μm to 10 μm, has a layer oxygen permeability of 60 cc/m2·day·atm or less, and is directly arranged on at least one surface of the wavelength selective absorption layer.

First claim

What is claimed is:

1 . A display device comprising:
a laminate; and a wavelength conversion material, wherein the laminate includes a wavelength selective absorption layer containing a resin, a dye including at least one of the following dyes A to D, and an antifading agent for a dye, and includes a gas barrier layer directly arranged on at least one surface of the wavelength selective absorption layer, the gas barrier layer contains a crystalline resin, a thickness of the gas barrier layer is 0.1 μm to 10 μm, and an oxygen permeability of the gas barrier layer is 60 cc/m 2 ·day·atm or less, the dye A: a dye having a main absorption wavelength band at a wavelength of 390 to 435 nm the dye B: a dye having a main absorption wavelength band at a wavelength of 480 to 520 nm the dye C: a dye having a main absorption wavelength band at a wavelength of 580 to 620 nm the dye D: a dye having a main absorption wavelength band at a wavelength of 680 to 780 nm.

2 . The display device according to claim 1 ,
wherein a degree of crystallinity of the crystalline resin contained in the gas barrier layer is 25% or more.

3 . The display device according to claim 1 ,
wherein the oxygen permeability of the gas barrier layer is 0.001 cc/m 2 ·day·atm or more and 60 cc/m 2 ·day·atm or less.

4 . The display device according to claim 1 ,
wherein at least one of the dyes B or C is a squarine-based coloring agent represented by General Formula (1),

in the formula, A and B each independently represent an aryl group which may have a substituent, a heterocyclic group which may have a substituent, or —CH═G, and G represents a heterocyclic group which may have a substituent.

5 . The display device according to claim 1 ,
wherein the dye A is a coloring agent represented by General Formula (A1),

in the formula, R 1 and R 2 each independently represent an alkyl group or an aryl group, R 3 to R 6 each independently represent a hydrogen atom or a substituent, and R 5 and R 6 may be bonded to each other to form a 6-membered ring.

6 . The display device according to claim 1 ,
wherein the dye D is at least one of a coloring agent represented by General Formula (D1) or a coloring agent represented by General Formula (1),

in the formula, R 1A and R 2A each independently represent an alkyl group, an aryl group, or a heteroaryl group, R 4A and R 5A each independently represent a heteroaryl group, and R 3A and R 6A each independently represent a substituent, X 1 and X 2 each independently represent —BR 21a R 22a , where R 21a and R 22a each independently represent a substituent, and R 21a and R 22a may be bonded to each other to form a ring,

in the formula, A and B each independently represent an aryl group which may have a substituent, a heterocyclic group which may have a substituent, or —CH═G, and G represents a heterocyclic group which may have a substituent.

7 . The display device according to claim 1 ,
wherein the antifading agent is represented by General Formula (IV),

in the formula, R 10 's each independently represent an alkyl group, an alkenyl group, an aryl group, a heterocyclic group, or a group represented by R 18 CO—, R 19 SO 2 —, or R 20 NHCO—, where R 18 , R 19 , and R 20 each independently represent an alkyl group, an alkenyl group, an aryl group, or a heterocyclic group,
R 11 and R 12 each independently represent a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkoxy group, or an alkenyloxy group, and
R 13 to R 17 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, or an aryl group.

8 . The display device according to claim 1 ,
wherein the resin in the wavelength selective absorption layer includes a polystyrene resin.

9 . The display device according to claim 1 ,
wherein the resin in the wavelength selective absorption layer includes a cyclic polyolefin resin.

10 . The display device according to claim 1 ,
wherein the wavelength selective absorption layer contains all of the four dyes A to D.

11 . The display device according to claim 1 ,
wherein the laminate includes an ultraviolet absorption layer arranged on a side of the gas barrier layer opposite to the wavelength selective absorption layer and at least one layer of a pressure sensitive adhesive layer or an adhesive layer, and any difference in a refractive index between adjacent layers in the laminate is 0.05 or less.

12 . The display device according to claim 1 ,
wherein the wavelength conversion material is a quantum dot.

13 . The display device according to claim 1 ,
wherein the display device includes a light emitting element, and the light emitting element is a micro light emitting diode.

14 . The display device according to claim 1 ,
wherein the display device includes a light emitting element, and the light emitting element is a quantum dot having an electroluminescence function.

15 . A laminate comprising:
a wavelength selective absorption layer containing a resin, a dye, and an electron migration-type antifading agent that satisfies Relational Expression [A-1] or [A-2], and a gas barrier layer directly arranged on at least one surface of the wavelength selective absorption layer: wherein the gas barrier layer contains a crystalline resin, a film thickness of the gas barrier layer is 0.1 to 10 μm, and an oxygen permeability of the gas barrier layer is 60 cc/m·day·atm or less,
E Hd >E Hq >E Ld , or  Relational Expression [A-1]:

E Hd >E Lq >E Ld   Relational Expression [A-2]:

where E Hd , E Hq , E Ld , and E Lq respectively represent the following values, E Hd : an energy level of a highest occupied molecular orbital of the dye, E Hq : an energy level of a highest occupied molecular orbital of the electron migration-type antifading agent, E Ld : an energy level of a lowest unoccupied molecular orbital of the dye, and E Lq : an energy level of a lowest unoccupied molecular orbital of the electron migration-type antifading agent.

16 . The laminate according to claim 15 ,
wherein the electron migration-type antifading agent is a metallocene compound represented by General Formula (L),

in the formula, M represents Fe, Ti, V, Cr, Co, Ni, Ru, Os, or Pd, and V 1 , V 2 , V 3 , V 4 , V 5 , V 6 , V 7 , V 8 , V 9 , and V 10 each independently represent a hydrogen atom or a monovalent substituent.

17 . The laminate according to claim 16 , wherein the M is Fe.

18 . The laminate according to claim 15 ,
wherein the resin in the wavelength selective absorption layer includes a polystyrene resin.

19 . An organic electroluminescent display device comprising:
the laminate according to claim 15 .

Assignees

• Fujifilm Corp

Inventors

• Fukagawa Nobutaka
• Kuwahara Hiroki
• Sasaki Daisuke

Classifications

• B32B2307/7244

  Oxygen barrier · CPC title

• B32B27/325

  comprising polycycloolefins · CPC title

• B32B2307/71

  Resistive to light or to UV · CPC title

• G02B5/223

  containing organic substances, e.g. dyes, inks or pigments · CPC title

• B32B27/302

  comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers · CPC title