Black light shielding member
Provided is a black light-shielding member, which has an excellent effect of anti-reflection that based on low glossiness and has a high blackness. A black light-shielding member including a substrate film, a resin-made light-shielding layer having a concave-convex shape formed on at least one surface of the substrate film, and a blackened layer formed on the resin-made light-shielding layer is produced. By adjusting an arithmetic mean surface roughness Ra of the surface on which the light-shielding layer and the blackened layer are formed to be 0.25 μm or more, and the maximum thickness of the blackened layer is less than the said Ra, a blackness with an L value of 12 or less is achieved.
1. A black light-shielding member, including a substrate film, a resin-made light-shielding layer having a concave-convex shape formed on at least one surface of the substrate film, and a blackened layer formed on the resin-made light-shielding layer, wherein
in the black light-shielding member, an arithmetic mean surface roughness Ra of a surface on which the resin-made light-shielding layer and the blackened layer are formed is 0.25 μm or more, and an L value is 12 or less, a maximum thickness of the blackened layer is less than the Ra, and the blackened layer contains at least one selected from magnesium fluoride, calcium fluoride, lithium fluoride, aluminum oxide, gallium oxide, and silicon oxide.
2. The black light-shielding member according to claim 1 , wherein
the resin-made light-shielding layer has a resin layer containing a matting agent and a resin component.
3. The black light-shielding member according to claim 2 , wherein the resin-made light-shielding layer includes a roughened portion formed on the surface of the substrate film.
4. The black light-shielding member according to claim 1 , wherein
the resin-made light-shielding layer includes a roughened portion formed on the surface of the substrate film.
5. The black light-shielding member according to claim 1 , wherein
the blackened layer is formed by any of the methods selected from sputtering, vapor deposition, ion plating, and chemical vapor deposition (CVD).
6. The black light-shielding member according to claim 1 , wherein
the maximum thickness of the blackened layer is less than ½ of the value of arithmetic mean surface roughness Ra of the surface.