COLORED CURABLE COMPOSITION, COLOR FILTER, AND SOLID IMAGE PICKUP ELEMENT

• US 20090085018A1
• Filed: 09/25/2008
• Published: 04/02/2009
• Est. Priority Date: 09/28/2007
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: SHIMADA, Kazuto
• Granted Patent: US 8,822,109 B2
• Time in Patent Office: Days
• US Class Current: 252/586
• CPC Class Codes: C08K 5/41 Compounds containing sulfur bound to oxygen
• CPC Class Codes: G02B 5/201 in the form of arrays

Abstract

The invention provides a colored curable composition including: (A) a pigment dispersion containing (a-1) a pigment, (a-2) a compound having a pigment skeletal structure and an amino group in its molecule, and (a-3) a dispersion resin; (B) an oxime-based initiator; and (C) a polymerizable compound. The invention provides a colored curable composition that is useful for forming a colored region of a color filter, which even with a high content of a pigment, is capable of curing with high sensitivity, is excellent in developability and is capable of highly finely forming a thin-layer colored region excellent in hue. Further, the invention provides a color filter provided with a high fine thin-layer colored region excellent in color properties formed by the colored curable composition of the invention, and a solid image pickup device provided with the color filter, which is excellent in color properties.

Claims

1. A colored curable composition comprising:

(A) a pigment dispersion containing (a-1) a pigment, (a-2) a compound having a pigment skeletal structure and an amino group in its molecule, and (a-3) a dispersion resin;

(B) an oxime-based initiator; and

(C) a polymerizable compound.

2. The colored curable composition according to claim 1, wherein (a-2) the compound having a pigment skeletal structure and an amino group in its molecule is a compound represented by the following formula (A):

wherein R¹ and R² each independently represent a hydrogen atom or a monovalent organic group selected from a saturated or unsaturated alkyl group having 1 to 20 carbon atoms, a saturated or unsaturated cycloalkyl group having 3 to 20 carbon atoms, or an aryl group;

each of these organic groups may further have a substituent selected from a halogen atom, a hydroxy group, an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group, a cycloalkynyl group, an aryl group, a heterocyclic group, a cyano group, an alkoxy group, an aryloxy group, a thioalkoxy group, a thioaryloxy group, a carboxyl group, an alkoxycarbonyl group, a sulfo group, a sulfonamide group, a urea group, a thiourea group, an amino group, an amido group, a carbonyl group, a nitro group, and substituents having these groups;

R¹ and R² may be bonded to each other to form a ring;

X is a group having a valency of m and containing a pigment skeletal structure which is a chromophoric atomic group in an organic pigment, a structure similar thereto or a partial structure thereof and contains one or more partial structure selected from the group consisting of a skeleton having an azo group, a skeleton having a urea structure, a skeleton having an amide structure, a skeleton having a cyclic amide structure, an aromatic ring having a heteroatom-containing 5-membered ring, and an aromatic ring having a heteroatom-containing 6-membered ring; and

m is an integer of from 1 to 8.

3. The colored curable composition according to claim 1, wherein (a-2) the compound having a pigment skeletal structure and an amino group in its molecule is a compound having, in its molecule, at least one structure selected from an amide structure and a urea structure.

4. The colored curable composition according to claim 1, wherein (a-2) the compound having a pigment skeletal structure and an amino group in its molecule is a compound having a heterocyclic structure.

5. The colored curable composition according to claim 1, which further comprises (D) a binder polymer.

6. The colored curable composition according to claim 3, which further comprises (D) a binder polymer.

7. The colored curable composition according to claim 4, which further comprises (D) a binder polymer.

8. The colored curable composition according to claim 1, wherein (B) the oxime-based initiator is represented by the following formula (I) or (II):

wherein R¹ is a monovalent organic group represented by the following formula (III) or (IV);

wherein R⁴ represents a monovalent organic group selected from an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group, a cycloalkynyl group, an aryl group, a heterocyclic group or an alkoxy group, each of which has 1 to 20 carbon atoms, and

wherein the formulae (I) and (II), R² represents a hydrogen atom, or a monovalent organic group selected from an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group, a cycloalkynyl group, an aryl group, a heterocyclic group or an alkoxy group, each of which has 1 to 20 carbon atoms; and

R³ represents a monovalent organic group selected from an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group, a cycloalkynyl group, an aryl group, a heterocyclic group or an alkoxy group, each of which has 1 to 20 carbon atoms.

9. A colored region of a colored filter comprising the colored curable composition according to claim 1.

10. A colored region of a colored filter comprising the colored curable composition according to claim 5.

11. A color filter having a colored region formed using the colored curable composition according to claim 9.

12. A color filter having a colored region formed using the colored curable composition according to claim 10.

13. A solid image pickup device provided with the color filter according to claim 11.

14. A solid image pickup device provided with the color filter according to claim 12.