COMPOSITE BLACK OXIDE PARTICLE, METHOD FOR PRODUCING SAME, BLACK COATING MATERIAL AND BLACK MATRIX

摘要

Disclosed is a composite black oxide particle which is composed of oxide of cobalt, copper and manganese. The copper/cobalt molar ratio is 0.1-0.5, and the manganese/cobalt molar ratio is 0.2-1.0. The composite black oxide particle further contains silicon, and the silicon content to the total oxide particle is 0.1-3 mass%. The surface of the composite black oxide particle is coated with aluminum oxide. The Al content in the surface coating to the entire particle is 0.05-3 mass%.