Laminate, display device, automobile, and portable electronic device
Provided are a laminate having a decorative layer and having excellent light resistance, and a display device, an automobile, and a portable electronic device using the laminate. A laminate includes: a λ/4 retardation layer, a decorative layer including a cholesteric liquid crystal layer, and an ultraviolet absorbing layer in this order, in which the laminate has an oxygen blocking layer on a side of the ultraviolet absorbing layer with respect to the decorative layer.
1 . A laminate comprising, in the following order:
a λ/4 retardation layer;
a decorative layer including a cholesteric liquid crystal layer; and
an ultraviolet absorbing layer,
wherein the laminate includes an oxygen blocking layer on a side of the ultraviolet absorbing layer with respect to the decorative layer.
2 . The laminate according to claim 1 ,
wherein the oxygen blocking layer contains a polyvinyl alcohol-based resin or a polyethylene vinyl alcohol-based resin.
3 . The laminate according to claim 2 ,
wherein the polyvinyl alcohol-based resin and the polyethylene vinyl alcohol-based resin have a degree of saponification of 83% or more.
4 . The laminate according to claim 2 ,
wherein the ultraviolet absorbing layer has a transmittance of less than 10% at a wavelength of 380 nm.
5 . The laminate according to claim 2 , further comprising:
a low-moisture permeable layer on the side of the ultraviolet absorbing layer with respect to the decorative layer,
wherein the low-moisture permeable layer has a moisture permeability of 40 g/(m 2 ×day) or less at a temperature of 40° C. and a relative humidity of 90%, and the low-moisture permeable layer is provided at a position farther from the decorative layer than the oxygen blocking layer.
6 . The laminate according to claim 2 , further comprising:
a polarizer on the λ/4 retardation layer on a side opposite to the decorative layer.
7 . The laminate according to claim 2 , further comprising:
at least one of an antireflection layer, a non-glossy layer, or a tactile sensation imparting layer on an outermost surface of the laminate.
8 . A display device comprising:
a display element; and
the laminate according to claim 2 disposed on a side of a display surface of the display element.
9 . The display device according to claim 8 , which is a liquid crystal display device or an electroluminescent display device.
10 . An automobile comprising:
the laminate according to claim 2 .
11 . The laminate according to claim 1 ,
wherein the ultraviolet absorbing layer has a transmittance of less than 10% at a wavelength of 380 nm.
12 . The laminate according to claim 1 , further comprising:
a low-moisture permeable layer on the side of the ultraviolet absorbing layer with respect to the decorative layer,
wherein the low-moisture permeable layer has a moisture permeability of 40 g/(m 2 ×day) or less at a temperature of 40° C. and a relative humidity of 90%, and the low-moisture permeable layer is provided at a position farther from the decorative layer than the oxygen blocking layer.
13 . The laminate according to claim 1 , further comprising:
a polarizer on the λ/4 retardation layer on a side opposite to the decorative layer.
14 . The laminate according to claim 1 , further comprising:
at least one of an antireflection layer, a non-glossy layer, or a tactile sensation imparting layer on an outermost surface of the laminate.
15 . A display device comprising:
a display element; and
the laminate according to claim 1 disposed on a side of a display surface of the display element.
16 . The display device according to claim 15 , which is a liquid crystal display device or an electroluminescent display device.
17 . An automobile comprising:
the display device according to claim 15 .
18 . A portable electronic device comprising:
the display device according to claim 15 .
19 . An automobile comprising:
the laminate according to claim 1 .
20 . A portable electronic device comprising:
the laminate according to claim 1 .