| abstract |
The present invention addresses the issue of providing: a diketo pyrrolo pyrrole-based pigment particles that have excellent thermal resistance and good color properties and are suitable for production of a color filter having a reduced thickness; a pigment dispersion including the pigment particles; a photosensitive colored composition; and a color filter. Provided are diketo pyrrolo pyrrole-based pigment particles containing a compound indicated by general formula (I) and having a crystallite size in the planar direction of no more than 140Å, said planar direction corresponding to the maximum peak in an X-ray diffraction pattern among 8 (±1 ±1 ±1) planes among crystal lattice planes calculated using an X-ray diffraction pattern. Also provided are a pigment dispersion including said pigment particles, a photosensitive colored composition, and a color filter. [In the general formula (I), X 1 and X 2 each independently indicate a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a cyano group, -CF 3 , an optionally substituted saturated or unsaturated alkyl group, or an optionally substituted aryl group.] |