Pigment dispersion composition, colored curable composition, color filter for solid-state image sensor and method of producing the same, and solid-state image sensor
US8465553B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2011 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Jan 7, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/033
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a pigment dispersion composition including an azo pigment represented by formula (1), in which the azo pigment represented by formula (1) does not have an ionic hydrophilic group, an azo pigment derivative and a dispersant. In formula (1), G represents a hydrogen atom, an aliphatic group, an aryl group or a heterocyclic group; R1 represents an amino group, an aliphatic oxy group, an aliphatic group, an aryl group or a heterocyclic group; R2 represents a substituent; A represents a heterocyclic group; m represents an integer of 0 to 5; and n represents an integer of 1 to 4, wherein: when n=2, the azo pigment is a dimer formed via R1, R2, A or G; when n=3, the azo pigment is a a trimer formed via R1, R2, A or G; and when n=4, the azo pigment is a tetramer formed via R1, R2, A or G.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.