Photosensitive coloring composition, cured film, color filter, solid-state imaging element, and image display device

Patent metadata

Field	Value
Publication number	US-11287739-B2
Application number	US-201916504745-A
Country	US
Kind code	B2
Filing date	Jul 8, 2019
Priority date	Mar 24, 2017
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

A photosensitive coloring composition includes a magenta pigment having an average primary particle diameter of 50 nm or less, a polymerizable compound, a photopolymerization initiator, and an ultraviolet absorber, in which the magenta pigment has a maximum absorption wavelength in a range of 500 to 600 nm, and in a case where an absorbance of the maximum absorption wavelength is 1, a wavelength at which an absorbance is 0.5 is 450 nm or more on a side where a wavelength is shorter than the maximum absorption wavelength and is 650 nm or less on a side where a wavelength is longer than the maximum absorption wavelength.

First claim

What is claimed is:

1. A photosensitive coloring composition comprising:
a magenta pigment having an average primary particle diameter of 20 nm or more and 50 nm or less;
a polymerizable compound;
a photopolymerization initiator; and
an ultraviolet absorber,
wherein the photosensitive coloring composition does not substantially contain a colorant other than the magenta pigment,
the magenta pigment has a maximum absorption wavelength in a range of 500 to 600 nm, and
in a case where an absorbance of the maximum absorption wavelength is 1, a wavelength at which an absorbance is 0.5 is 450 nm or more on a side where a wavelength is shorter than the maximum absorption wavelength, and is 650 nm or less on a side where a wavelength is longer than the maximum absorption wavelength.

2. The photosensitive coloring composition according to claim 1 ,
wherein the magenta pigment is a compound having a coloring agent skeleton selected from a quinacridone skeleton and a dioxazine skeleton.

3. The photosensitive coloring composition according to claim 1 ,
wherein in the case where the absorbance of the maximum absorption wavelength is 1, the magenta pigment has a difference of 130 nm or less between the wavelengths at which the absorbance is 0.5 on the side where a wavelength is longer than the maximum absorption wavelength and on the side where a wavelength is shorter than the maximum absorption wavelength.

4. The photosensitive coloring composition according to claim 1 ,
wherein a content of the ultraviolet absorber is 1% to 20% by mass with respect to the total solid content of the photosensitive coloring composition.

5. The photosensitive coloring composition according to claim 1 ,
wherein the photosensitive coloring composition contains 10 to 500 parts by mass of the ultraviolet absorber with respect to 100 parts by mass of the photopolymerization initiator.

6. The photosensitive coloring composition according to claim 1 ,
wherein the photosensitive coloring composition contains 1 to 40 parts by mass of the ultraviolet absorber with respect to 100 parts by mass of the magenta pigment.

7. The photosensitive coloring composition according to claim 1 , further comprising a resin having an amine value.

8. The photosensitive coloring composition according to claim 7 ,
wherein the resin having an amine value is a resin having a nitrogen atom in a main chain.

9. The photosensitive coloring composition according to claim 7 ,
wherein the resin having an amine value is a resin having an acid value and an amine value, and
the acid value is 30 mgKOH/g or more.

10. The photosensitive coloring composition according to claim 1 , further comprising a resin having an acid value of 50 mgKOH/g or more.

11. The photosensitive coloring composition according to claim 1 , further comprising a resin having an acid value of 80 mgKOH/g or more.

12. The photosensitive coloring composition according to claim 1 , further comprising an alkali-soluble resin having a polymerizable group.

13. The photosensitive coloring composition according to claim 1 ,
wherein the magenta pigment is at least one pigment selected from Color Index Pigment Red 122, Color Index Pigment Red 202, Color Index Pigment Red 209, Color Index Pigment Red 269, Color Index Pigment Violet 19, or Color Index Pigment Violet 23.

14. The photosensitive coloring composition according to claim 1 , which is used for forming a magenta coloring pixel in a color filter.

15. A cured film obtained from the photosensitive coloring composition according to claim 1 .

16. A color filter comprising the cured film according to claim 15 .

17. A color filter comprising a magenta coloring pixel obtained from the photosensitive coloring composition according to claim 1 , a cyan coloring pixel, and a yellow coloring pixel.

18. A solid-state imaging element comprising the color filter according to claim 16 .

19. An image display device comprising the color filter according to claim 16 .

20. A magenta coloring pixel obtained from a photosensitive coloring composition,
wherein the photosensitive coloring composition includes:
a magenta pigment having an average primary particle diameter of 20 nm or more and 50 nm or less;
a polymerizable compound;
a photopolymerization initiator; and
an ultraviolet absorber, and

wherein the photosensitive coloring composition does not substantially contain a colorant other than the magenta pigment,
the magenta pigment has a maximum absorption wavelength in a range of 500 to 600 nm, and
in a case where an absorbance of the maximum absorption wavelength is 1, a wavelength at which an absorbance is 0.5 is 450 nm or more on a side where a wavelength is shorter than the maximum absorption wavelength, and is 650 nm or less on a side where a wavelength is longer than the maximum absorption wavelength.

Assignees

• Fujifilm Corp

Inventors

• Nakamura Shoichi

Classifications

• H10F39/12

  Image sensors · CPC title

• G02B5/223

  containing organic substances, e.g. dyes, inks or pigments · CPC title

• G03F7/004

  Photosensitive materials (G03F7/12, G03F7/14 take precedence) · CPC title

• G03F7/0007 Primary

  Filters, e.g. additive colour filters; Components for display devices · CPC title

• G03F7/032

  with binders · CPC title