| abstract |
【Task】 Black electrodes such as plasma displays and plasma addressed liquid crystals, blackness to be provided as black pigment powder for forming a light-shielding layer, and high electrical resistance. Excellent primary dispersibility due to small primary particle average and aggregate particle size Provide materials. [Solution] Cobalt-containing black, characterized in that the average primary particle diameter is 0.03 μm or more and 0.5 μm or less, and D 50 in particle size measurement based on the number standard by the laser diffraction scattering method is 0.05 μm or more and less than 1.5 μm Pigments. |