Decorative film, molded product, and electronic device
Provided are a decorative film including a reflective layer which consists of a dielectric multi-layer film and develops a color due to an optical interference or a structural color, in which the dielectric multi-layer film has a plurality of regions having different reflection performances in an in-plane direction, at least one of the plurality of regions is a region having a specular reflectivity, and at least another one of the plurality of regions is a region having a diffuse reflectivity; and a molded product and an electronic device using the decorative film.
1. A decorative film comprising, in the following order:
an adhesive layer;
a base material; and
a reflective layer which consists of a dielectric multi-layer film and develops a color due to an optical interference or a structural color, wherein:
the dielectric multi-layer film has a plurality of regions having different reflection performances in an in-plane direction,
at least one of the plurality of regions is a region having a specular reflectivity,
at least another one of the plurality of regions is a region having a diffuse reflectivity,
wherein, in the region having a specular reflectivity, a ratio of a 5° specular reflectance to an integral reflectance at a reflected light peak wavelength is 70% or more, and
in the region having a diffuse reflectivity, a ratio of a 5° specular reflectance to an integral reflectance at a reflected light peak wavelength is 8% or more and less than 30%.
2. The decorative film of claim 1 , further comprising a colored layer.
3. The decorative film according to claim 1 ,
wherein the reflective layer is a cholesteric liquid crystal layer obtained by immobilizing a liquid crystal compound.
4. The decorative film according to claim 3 ,
wherein the cholesteric liquid crystal layer in the region having a specular reflectivity forms a cholesteric alignment state in which the liquid crystal compound has a helical axis in a vertical direction of a surface of the decorative film.
5. The decorative film according to claim 3 ,
wherein, in the cholesteric liquid crystal layer in the region having a diffuse reflectivity, helical axes in a cholesteric alignment state are different from each other in a plane, and a cholesteric liquid crystal structure has a flapping structure in a cross-sectional view in a thickness direction.
6. The decorative film according to claim 4 ,
wherein the cholesteric liquid crystal layer includes a plurality of regions having different pitches of helical structures.
7. A molded product obtained by molding the decorative film according to claim 1 .
8. An electronic device comprising:
the molded product according to claim 7 .