Black light shielding member
A light shielding component with low gloss, high blackness, and excellent processability is provided. A light shielding layer ( 3 ) containing black fine particles ( 32 ), low refractive index nanoparticles ( 33 ), and a resin composition ( 31 ) is formed on at least one surface of a substrate. The average particle size of the black fine particles ( 32 ) is set to be between 0.1 μm and 50 μm, and the average particle size of the low refractive index nanoparticles ( 33 ) is set to be between 1 nm and 200 nm. Porous carbon is preferred as the black fine particles ( 32 ), while magnesium fluoride particles and silicon oxide particles are preferred as the low-refractive-index nanoparticles ( 33 ).
1 . A black light shielding component, comprising a substrate and a light shielding layer formed on at least one surface of the substrate directly or via an anchor layer configured to improve adhesion therebetween,
wherein the light shielding layer comprises black fine particles, low refractive index nano particles and resin compositions,
the low refractive index nano particles contain at least two selected from magnesium fluoride particles, calcium fluoride particles, lithium fluoride particles, calcium carbonate particles, and silicon oxide particles,
the sum of the contents of the black fine particles and low refractive index nano particles in the light shielding layer is 50%~95% relative to the overall volume of the light shielding layer, and
the glossiness of the surface of the black light shielding component on which the light shielding layer is formed relative to the incident light with an incidence angle of 60° is 1% or less, and the L value is 10 or less.
2 . The black light shielding component according to claim 1 , wherein the black fine particles contain porous carbon.
3 . The black light shielding component according to claim 1 , wherein
the low refractive index nano particles contain magnesium fluoride particles and silicon oxide particles.
4 . The black light shielding component according to claim 1 , wherein
the low refractive index nano particles contain hollow nano particles.
5 . The black light shielding component according to claim 4 , wherein
the hollow nano particles contain hollow silica nano particles.
6 . The black light shielding component according to claim 1 , wherein
the average particle size of the black fine particles is 0.1 μm~50 μm, the average particle size of the low refractive index nano particles is 1 nm~200 nm,
and the content of the low refractive index nano particles is 1 volume % to 50 volume % relative to the total amount of the black fine particles and the low refractive index nano particles.
7 . The black light shielding component according to claim 1 , wherein the average film thickness of the light shielding layer is 1 μm~100 μm.