Near infrared radiation-absorbing composition, near infrared radiation cut-off filter and production method therefor, and camera module and production method therefor

Patent metadata

Field	Value
Publication number	US-10184052-B2
Application number	US-201615192284-A
Country	US
Kind code	B2
Filing date	Jun 24, 2016
Priority date	Jan 21, 2014
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

An object of the present invention is to provide a near infrared radiation-absorbing composition having favorable shielding properties in a near infrared range when used to produce cured films, a near infrared radiation cut-off filter and a production method therefor, and a camera module and a production method therefor. The near infrared radiation-absorbing composition including a copper complex formed by reacting a compound (A) having two or more coordinating atoms that form bonds using unshared electron pairs with a copper component.

First claim

What is claimed is:

1. A near infrared radiation-absorbing composition comprising:
a copper complex formed by reacting a compound (A) having two or more coordinating atoms that form bonds using unshared electron pairs with a copper component,
wherein:
in the compound (A), the coordinating atoms that form bonds using the unshared electron pairs are at least one selected from an oxygen atom, a nitrogen atom and a phosphorus atom;
in the compound (A), the number of atoms that link two coordinating atoms is in a range of 1 to 3; and
the compound (A) is a compound represented by at least one of general formulas (IV-1), (IV-2) and (IV-11) to (IV-20):
Y 3 -L 2 -Y 4 -L 3 -Y 5   (IV-1)

Y 6 -L 6 -Y 7 -L 7 -Y 8 -L 8 -Y 9   (IV-2)

wherein Y 3 , Y 5 , Y 6 and Y 9 each independently represents a group made of a ring including the coordinating atom or at least one selected from Group (UE);
Y 4 , Y 7 and Y 8 each independently represents a group made of a ring including the coordinating atom or at least one selected from Group (UE-1);
L 2 , L 3 , L 6 , L 7 and L 8 each independently represents a single bond or a divalent linking group;

wherein Z 1 to Z 34 each independently represents a group made of a ring including the coordinating atom or at least one selected from Group (UE);
Z 101 to Z 108 each independently represents a group made of a ring including the coordinating atom or at least one selected from Group (UE-1);
Z 201 to Z 203 each independently represents at least one selected from Group (UE-2);
L 11 to L 25 each independently represents a single bond or a divalent linking group;
L 26 to L 32 each independently represents a trivalent linking group;
L 33 and L 34 each independently represents a tetravalent linking group;

wherein wavy lines represent bonding positions to atomic groups that constitute the compound (A), each R 1 independently represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heteroaryl group, and each R 2 independently represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heteroaryl group, an alkoxy group, an aryloxy group, a heteroaryloxy group, an alkylthio group, an arylthio group, a heteroarylthio group, an amino group or an acyl group;

wherein wavy lines represent bonding positions to atomic groups that constitute the compound (A), and each R independently represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heteroaryl group; and

wherein wavy lines represent bonding positions to atomic groups that constitute the compound (A).

2. The near infrared radiation-absorbing composition according to claim 1 ,
wherein, in the copper complex, a 5-membered ring and/or a 6-membered ring is formed of copper and the compound (A).

3. The near infrared radiation-absorbing composition according to claim 1 ,
wherein the compound (A) has 2 to 5 coordinating atoms that form bonds using unshared electron pairs.

4. The near infrared radiation-absorbing composition according to claim 1 ,
wherein the molecular weight of the compound (A) is in the range of 50 to 1,000.

5. The near infrared radiation-absorbing composition according to claim 1 ,
wherein the compound (A) is represented by General Formula (IV-18).

6. The near infrared radiation-absorbing composition according to claim 1 ,
wherein the compound (A) is a compound including a 5-membered ring or a 6-membered ring, and coordinating atoms that form bonds using the unshared electron pairs constitute the 5-membered ring or the 6-membered ring.

7. The near infrared radiation-absorbing composition according to claim 1 ,
wherein the coordinating atom that forms a bond using the unshared electron pair is a nitrogen atom.

8. The near infrared radiation-absorbing composition according to claim 1 , further comprising:
a curable compound; and
a solvent.

9. A near infrared radiation cut-off filter formed by curing the near infrared radiation-absorbing composition according to claim 1 .

10. A production method for a near infrared radiation cut-off filter, comprising:
a forming a film on a light-receiving side of a solid image pickup element substrate by applying the near infrared radiation-absorbing composition according to claim 1 thereto.

11. A camera module comprising:
a solid image pickup element substrate; and
a near infrared radiation cut-off filter disposed on a light-receiving side of the solid image pickup element substrate,
wherein the near infrared radiation cut-off filter is a near infrared radiation cut-off filter formed by curing the near infrared radiation-absorbing composition according to claim 1 .

12. A production method for a camera module including a solid image pickup element substrate and a near infrared radiation cut-off filter disposed on a light-receiving side of the solid image pickup element substrate, the method comprising: a forming a film by applying the near infrared radiation-absorbing composition according to claim 1 to a light-receiving side of the solid image pickup element substrate.

13. A near infrared radiation-absorbing composition comprising:
a copper complex in which copper is a central metal and a compound (A) having two or more coordinating atoms that form bonds using unshared electron pairs,
wherein:
in the compound (A), the coordinating atoms that form bonds using the unshared electron pairs are at least one selected from an oxygen atom, a nitrogen atom and a phosphorus atom;
in the compound (A), the number of atoms that link two coordinating atoms is in a range of 1 to 3; and
the compound (A) is a compound represented by at least one of general formulas (IV-1), (IV-2) and (IV-11) to (IV-20):
Y 3 -L 2 -Y 4 -L 3 -Y 5   (IV-1)

Y 6 -L 6 -Y 7 -L 7 -Y 8 -L 8 -Y 9   (IV-2)

wherein Y 3 , Y 5 , Y 6 and Y 9 each independently represents a group made of a ring including the coordinating atom or at least one selected from Group (UE);
Y 4 , Y 7 and Y 8 each independently represents a group made of a ring including the coordinating atom or at least one selected from Group (UE-1);
L 2 , L 3 , L 6 , L 7 and L 8 each independently represents a single bond or a divalent linking group;

wherein Z 1 to Z 34 each independently represents a group made of a ring including the coordinating atom or at least one selected from Group (UE);
Z 101 to Z 108 each independently represents a group made of a ring including the coordinating atom or at least one selected from Group (UE-1);
Z 201 to Z 203 each independently represents at least one selected from Group (UE-2);
L 11 to L 25 each independently represents a single bond or a divalent linking group;
L 26 to L 32 each independently represents a trivalent linking group;
L 33 and L 34 each independently represents a tetravalent linking group;

wherein wavy lines represent

Assignees

• Fujifilm Corp

Inventors

• Hitomi Seiichi
• Kawashima Takashi
• Sasaki Kouitsu

Classifications

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• G02B5/208

  for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation · CPC title

• H01L27/1462

  Electricity · mapped topic

• C08K5/0091

  Complexes with metal-heteroatom-bonds · CPC title

• C09D7/63 Primary

  organic · CPC title