Near infrared ray absorbent composition, near infrared ray cut filter, solid image pickup element, and camera module

Patent metadata

Field	Value
Publication number	US-10215898-B2
Application number	US-201715497959-A
Country	US
Kind code	B2
Filing date	Apr 26, 2017
Priority date	Oct 28, 2014
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

Provided are a near infrared ray absorbent composition which can form a cured film having excellent near infrared ray shielding properties, a near infrared ray cut filter, a manufacturing method of a near infrared ray cut filter, a solid image pickup element, and a camera module. The near infrared ray absorbent composition includes a copper complex that is other than a copper phthalocyanine complex and has a maximum absorption wavelength in a wavelength range of 700 to 1,200 nm and in which a molar light absorption coefficient at the maximum absorption wavelength is greater than or equal to 100 (L/mol·cm).

First claim

What is claimed is:

1. A near infrared ray absorbent composition comprising:
a copper complex that is other than a copper phthalocyanine complex;
wherein the copper complex has a maximum absorption wavelength in a wavelength range of 700 to 1,200 nm and has a molar light absorption coefficient at the maximum absorption wavelength of greater than or equal to 100 (L/mol·cm), and
the copper complex comprises a compound represented by Formula (IV-12′) or a compound represented by Formula (IV-13′) as a ligand;

wherein each of R 1 independently represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heteroaryl group,

wherein each of R 1 independently represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heteroaryl group, L 23 represents a single bond or a divalent linking group, X 38 represents a coordination portion.

2. A near infrared ray absorbent composition comprising:
a copper complex that includes a compound not having a maximum absorption wavelength in a wavelength range of 400 to 600 nm as a ligand;
wherein the copper complex has a maximum absorption wavelength in a wavelength range of 700 to 1,200 nm and has a molar light absorption coefficient at the maximum absorption wavelength of greater than or equal to 100 (L/mol·cm), and
the copper complex comprises a compound represented by Formula (IV-12′) or a compound represented by Formula (IV-13′) as a ligand;

wherein each of R 1 independently represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heteroaryl group,

wherein each of R 1 independently represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heteroaryl group, L 23 represents a single bond or a divalent linking group, X 38 represents a coordination portion.

3. The near infrared ray absorbent composition according to claim 1 ,
wherein, in the copper complex, a 5-membered ring and/or a 6-membered ring is formed by copper and a ligand.

4. The near infrared ray absorbent composition according to claim 1 ,
wherein the content of the copper complex is greater than or equal to 15 mass % with respect to the total solid content of the near infrared ray absorbent composition.

5. The near infrared ray absorbent composition according to claim 1 , further comprising:
a curable compound; and
a solvent.

6. The near infrared ray absorbent composition according to claim 1 ,
wherein, when a film having a film thickness after being dried of 100 μm is prepared by using the near infrared ray absorbent composition, light transmittance in a thickness direction of the film at a wavelength of 550 nm is greater than or equal to 45%, and light transmittance at a wavelength of 800 nm is less than or equal to 25%.

7. A near infrared ray cut filter obtained by using the near infrared ray absorbent composition according to claim 1 .

8. The near infrared ray cut filter according to claim 7 ,
wherein a film thickness is less than or equal to 300 μm.

9. A solid image pickup element comprising:
a near infrared ray cut filter obtained by using the near infrared ray absorbent composition according to claim 1 .

10. A camera module comprising:
a solid image pickup element; and
a near infrared ray cut filter disposed on the solid image pickup element on a light receiving side,
wherein the near infrared ray cut filter is the near infrared ray cut filter according to claim 7 .

11. A near infrared ray absorbent composition comprising:
a copper complex that is other than a copper phthalocyanine complex;
wherein the copper complex has a maximum absorption wavelength in a wavelength range of 700 to 1,200 nm and has a molar light absorption coefficient at the maximum absorption wavelength of greater than or equal to 100 (L/mol·cm), and
the copper complex comprises a compound represented by Formula (IV-12) as a ligand and further comprises at least one unidentate ligand,

wherein X 33 , X 34 , X 35 and X 57 each independently represent a coordination portion containing a coordination atom coordinating to copper by an unshared electron pair,
wherein the coordination atom is an oxygen atom, a nitrogen atom, a sulfur atom or a phosphorus atom,
L 17 to L 19 each independently represent a single bond or a divalent linking group.

12. A near infrared ray absorbent composition comprising:
a copper complex that includes a compound not having a maximum absorption wavelength in a wavelength range of 400 to 600 nm as a ligand,
wherein the copper complex has a maximum absorption wavelength in a wavelength range of 700 to 1,200 nm and has a molar light absorption coefficient at the maximum absorption wavelength of greater than or equal to 100 (L/mol·cm), and
wherein the copper complex comprises a compound represented by Formula (IV-12) as a ligand and further comprises at least one unidentate ligand,

wherein X 33 , X 34 , X 35 and X 57 each independently represent a coordination portion containing a coordination atom coordinating to copper by an unshared electron pair,
wherein the coordination atom is an oxygen atom, a nitrogen atom, a sulfur atom or a phosphorus atom,
L 17 to L 19 each independently represent a single bond or a divalent linking group.

13. The near infrared ray absorbent composition according to claim 1 ,
wherein each of R 1 represents an alkyl group.

14. The near infrared ray absorbent composition according to claim 2 ,
wherein each of R 1 represents an alkyl group.

15. The near infrared ray absorbent composition according to claim 11 ,
wherein the coordination atom is an oxygen atom or a nitrogen atom.

16. The near infrared ray absorbent composition according to claim 11 ,
wherein X 33 to X 35 each independently is selected from group (UE-1) and X 33 is selected from group (UE-3):

wherein R 1 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heteroaryl group, and R 2 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 alkyl thio group, an aryl thio group, a heteroaryl thio group, an amino group, or an acyl group, and

17. The near infrared ray absorbent composition according to claim 11 ,
wherein the unidentate ligand is a unidentate ligand performing coordination by an anion.

18. The near infrared ray absorbent composition according to claim 12 ,
wherein the coordination atom is an oxygen atom or a nitrogen atom.

19. The near infrared ray

Assignees

• Fujifilm Corp

Inventors

• Sasaki Kouitsu
• Kawashima Takashi
• Hitomi Seiichi
• SHIRAISHI Yasuharu

Classifications

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• G02B5/208 Primary

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

• C07F9/113

  with unsaturated acyclic alcohols · CPC title

• C07F1/08

  Copper compounds · CPC title

• H04N5/2254

  Electricity · mapped topic