Near infrared ray absorbent composition, near infrared ray cut filter, manufacturing method of near infrared ray cut filter, solid image pickup element, camera module

Patent metadata

Field	Value
Publication number	US-9958576-B2
Application number	US-201615389546-A
Country	US
Kind code	B2
Filing date	Dec 23, 2016
Priority date	Jun 30, 2014
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

Provided are a near infrared ray absorbent composition which can form a cured film having excellent heat resistance while maintaining high near infrared ray shielding properties, and 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 using the near infrared ray absorbent composition. The near infrared ray absorbent composition contains a compound having a partial structure represented by M-X, and a near infrared ray absorbent compound, and a content of the compound having a partial structure represented by M-X is greater than or equal to 15 mass % with respect to a total solid content of the near infrared ray absorbent composition. Here, M is an atom selected from Si, Ti, Zr, and Al, X is one type selected from a hydroxy group, an alkoxy group, an acyloxy group, a phosphoryloxy group, a sulfonyloxy group, an amino group, an oxime group, and O═C(R a )(R b ), R a and R b each independently represent a monovalent organic group, and in a case in which X is O═C(R a )(R b ), X is bonded to M by an unshared electron pair of an oxygen atom of a carbonyl group.

First claim

What is claimed is:

1. A near infrared ray absorbent composition, containing:
a compound having a partial structure represented by M-X; and
a near infrared ray absorbent compound,
wherein a content of the compound having a partial structure represented by M-X is greater than or equal to 15 mass % with respect to a total solid content of the near infrared ray absorbent composition, and
M is an atom selected from Si, Ti, Zr, and Al, X is one type selected from a hydroxy group, an alkoxy group, an acyloxy group, a phosphoryloxy group, a sulfonyloxy group, an amino group, an oxime group, and O═C(R a )(R b ), R a and R b each independently represent a monovalent organic group, and in a case in which X is O═C(R a )(R b ), X is bonded to M by an unshared electron pair of an oxygen atom of a carbonyl group.

2. The near infrared ray absorbent composition according to claim 1 ,
wherein in the compound having a partial structure represented by M-X, M is Si.

3. The near infrared ray absorbent composition according to claim 1 ,
wherein in the compound having a partial structure represented by M-X, X is an alkoxy group.

4. The near infrared ray absorbent composition according to claim 1 ,
wherein the compound having a partial structure represented by M-X is an acrylic resin, an acrylamide resin, or a styrene resin.

5. The near infrared ray absorbent composition according to claim 1 ,
wherein a weight-average molecular weight of the compound having a partial structure represented by M-X is 500 to 300,000.

6. The near infrared ray absorbent composition according to claim 1 ,
wherein the near infrared ray absorbent compound is a copper compound.

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

8. 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 .

9. A manufacturing method of a near infrared ray cut filter, comprising:
applying the near infrared ray absorbent composition according to claim 1 on a solid image pickup element on a light receiving side.

10. 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 .

Assignees

• Fujifilm Corp

Inventors

• Kawashima Takashi
• Arimura Keisuke

Classifications

• G02B5/22

  Absorbing filters {(G02B5/201 - G02B5/208 take precedence)} · CPC title

• C08K5/56

  Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond · CPC title

• H04N23/57

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

• H04N23/75

  by influencing optical camera components · CPC title

• G02B1/04 Primary

  made of organic materials, e.g. plastics (G02B1/08 takes precedence) · CPC title