Halogenated zinc phthalocyanine pigment for color filter and method for producing halogenated zinc phthalocyanine pigment for color filter
AssigneeDIC Corporation
InventorsKeisuke Sakamoto, Kentaro Oishi, Ryousuke Asami, Mayumi Tokuoka, Katsunori Shimada, Keisuke Fujisawa
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Abstract
There is provided a novel halogenated zinc phthalocyanine pigment for a color filter, which can form a green color filter having excellent contrast and high luminance. A halogenated zinc phthalocyanine pigment for a color filter shows, in a Raman spectrum, a peak intensity of 3.0% or more at 716±2.2 cm−1 when a peak intensity at 650±10 cm−1 is regarded as 100%.
Claims12
A halogenated zinc phthalocyanine pigment for a color filter, wherein in a Raman spectrum, a peak intensity at 716±2.2 cm−1 is 3.0% or more when a peak intensity at 650±10 cm−1 is regarded as 100%.
A halogenated zinc phthalocyanine pigment for a color filter, wherein in a Raman spectrum, a peak intensity at 713±2.2 cm−1 is 15% or more when a peak intensity at 650±10 cm−1 is regarded as 100%.
A method for producing a halogenated zinc phthalocyanine pigment for a color filter, comprising heating a halogenated zinc phthalocyanine crude pigment under pressure in water to form a pigment.
Dependencies are inferred from the claim text.