| 摘要 |
PROBLEM TO BE SOLVED: To provide a cobalt-containing black pigment which essentially has a black degree and high electric resistance as black pigment powder for forming light-shielding layers and black electrodes for plasma displays, plasma address liquid crystals, and the like, has a small average primary particle diameter and a small coagulated particle diameter, and is excellent in initial dispersibility. SOLUTION: This cobalt-containing black pigment is characterized in that an average primary particle diameter is 0.03 to 0.5μm, and D<SB>50</SB>by the measurement of particle sizes based on the number of particles by a laser diffraction scattering method is 0.05 to 1.5μm. COPYRIGHT: (C)2008,JPO&INPIT
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