Structure, composition for near-infrared cut filter, dry film, method for producing structure, optical sensor, and image display device

1. A structure comprising:

a light-receiving element:

first pixels constituted of a laminate including a color filter and a rear-infrared cut filter, provided on a light-receiving surface of the light-receiving element; and

second pixels including a near-infrared transmitting filter, provided on the light-receiving surface of the light-receiving element at a position different from a region where the first pixels are provided,

wherein the near-infrared cut filter includes a near-infrared absorbing colorant, a cyclic olefin resin having a glass transition temperature of 100° C. or higher, and a surfactant, and

the near-infrared absorbing colorant is at least one selected from a colorant compound having a cation and an anion in the same molecule, a colorant compound which is a salt of a cationic chromophore and a counter anion, or a colorant compound which is a salt of an anionic chromophore and a counter cation.

2. The structure according to claim 1 ,

wherein the near-infrared absorbing colorant is a squarylium compound or a croconium compound.

3. The structure according to claim 1 ,

wherein a content of the near-infrared absorbing colorant in the near-infrared cut filter is 10% by mass or more.

4. The structure according to claim 1 ,

wherein the color filter includes a surfactant.

5. The structure according w claim 1 ,

wherein the surfactant is a fluorine-based surfactant.

6. The structure according to claim 1 ,

wherein a content of the surfactant in the near-infrared cut filter is 10 to 10,000 ppm by mass.

7. The structure according to claim 1 ,

wherein a concentration of the surfactant of the near-infrared cut filter in a region in a range of 0% to 5% in a thickness direction from one surface of the near-infrared cut filter is higher than a concentration of the surfactant in a region in a range of 60% to 70% in the thickness direction from the surface.

8. A composition for a near-infrared cut filter, which is used for producing a near-infrared cut filter of the structure according to claim 1 , the composition comprising:

a near-infrared absorbing colorant;

at least one compound selected from the group consisting of a cyclic olefin resin having a glass transition temperature of 100° C. or higher and a precursor of the cyclic olefin resin having a glass transition temperature of 100° C. or higher; and

a surfactant,

wherein the near-infrared absorbing colorant is at least one selected from a colorant compound having a cation and an anion in the same molecule, a colorant compound which is a salt of a cationic chromophore and a counter anion, or a colorant compound which is a salt of an anionic chromophore and a counter cation.

9. A dry film obtained by using the composition for a near-infrared cart filter according to claim 8 .

10. A method for producing the structure according to claim 1 , the method comprising:

forming first pixels constituted of a laminate including a color filter and a near-infrared cut filter on a light-receiving surface of the light-receiving element; and

forming second pixels including a near-infrared transmitting filter on the light-receiving surface of the light-receiving element at a position different from a region where the first pixels are provided,

wherein the near-infrared cut filter is formed by applying a composition for a near-infrared cut filter onto a light-receiving surface of a light-receiving element to form a composition layer and subjecting the composition layer to a photolithography method or a dry etching method to form a pattern,

wherein the composition for a near-infrared cut filter includes:

a near-infrared absorbing colorant;

at least one compound selected from the group consisting of a cyclic olefin resin having a glass transition temperature of 100° C. or higher and a precursor of the cyclic olefin resin having a glass transition temperature of 100° C. or higher; and

a surfactant, and

wherein the near-infrared absorbing colorant is at least one selected from a colorant compound having a cation and an anion in the same molecule, a colorant compound which is a salt of a cationic chromophore and a counter anion, or a colorant compound which is a salt of an anionic chromophore and a counter cation.

11. A method for producing the structure according to claim 1 , the method comprising:

forming first pixels constituted of a laminate including a color filter and a near-infrared cut filter on a light-receiving surface of the light-receiving element; and

forming second pixels including a near-infrared transmitting filter on the light-receiving surface of the light-receiving element at a position different from a region where the first pixels are provided,

wherein the near-infrared cut filter is formed by applying a dry film onto a light-receiving surface of a light-receiving element to form a dry film layer and subjecting the dry film layer to a photolithography method or a dry etching method to form a pattern,

wherein the dry film is obtained by using a composition for a near-infrared cut filter,

wherein the composition for a near-infrared cut filter includes:

a near-infrared absorbing, colorant;

at least one compound selected from the group consisting, of a cyclic olefin resin having a glass transition temperature of 100° C. or higher and a precursor of the cyclic olefin resin having a glass transition temperature of 100° C. or higher; and

a surfactant, and

wherein the near-infrared absorbing colorant is at least one selected from a colorant compound having a cation and an anion in the same molecule, a colorant compound which is, a salt of a cationic chromophore and a counter anion, or a colorant compound which is a salt of an anionic chromophore and a counter cation.

12. An optical sensor comprising the structure according to claim 1 .

13. An image display device comprising the structure according to claim 1 .