Color filter, solid-state imaging element, and image display device

Patent metadata

Field	Value
Publication number	US-12111487-B2
Application number	US-202117553802-A
Country	US
Kind code	B2
Filing date	Dec 17, 2021
Priority date	Jul 9, 2019
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

Provided are a color filter including a colored pixel A including an aluminum phthalocyanine pigment and an ultraviolet absorbing layer which is provided on an optical path on a light incident side of the colored pixel A and has a wavelength region having a transmittance of 20% or less in a wavelength range of 300 to 450 nm, in which a transmittance in a wavelength region of 550 to 800 nm is 80% or more; and a solid-state imaging element and an image display device which include the color filter.

First claim

What is claimed is:

1. A color filter comprising:
a colored pixel A including an aluminum phthalocyanine pigment; and
an ultraviolet absorbing layer which is provided on an optical path on a light incident side of the colored pixel A and has a wavelength region having a transmittance of 20% or less in a wavelength range of 300 to 450 nm, in which a transmittance in a wavelength region of 550 to 800 inn is 80% or more.

2. The color filter according to claim 1 ,
wherein the ultraviolet absorbing layer is laminated on a surface of the colored pixel A.

3. The color filter according to claim 1 ,
wherein the aluminum phthalocyanine pigment is at least one selected from a compound represented by Formula (AL1) or a compound represented by Formula (AL2),

in Formula (AL1), X 1 represents a halogen atom,
Z 1 represents a hydroxy group, —OP(═O)R 1 R 2 , —OC(═O)R 3 , —OS(═O) 2 R 4 , or —O—SiR 5 R 6 R 7 , where R 1 and R 2 each independently represent a hydroxy group, an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, or an aryloxy group, R 1 and R 2 may be bonded to each other to form a ring, R 3 to R 7 each independently represent a hydrogen atom, a hydroxy group, an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, or an aryloxy group, and R 5 and R 6 may be bonded to each other to form a ring, and
n1 represents an integer of 0 to 16,

in Formula (AL2), X 2 and X 3 each independently represent a halogen atom,
Z 2 represents —O—SiR 11 R 12 —O—, —O—SiR 13 R 14 —O—SiR 15 R 16 —O—, or —O—P(═O)R 17 —O—, where R 11 to R 17 each independently represent a hydrogen atom, a hydroxy group, an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, or an aryloxy group, and
n2 and n3 each independently represent an integer of 0 to 16.

4. The color filter according to claim 3 ,
wherein the aluminum phthalocyanine pigment is the compound represented by Formula (AL1), and Z 1 is —OP(═O)R 1 R 2 .

5. The color filter according to claim 3 ,
wherein the aluminum phthalocyanine pigment is the compound represented by Formula (AL1), and
n1 represents an integer of 4 to 16, an average value of the number of substitutions of halogen atoms represented by X 1 is 6 to 15, and a halogen distribution width is 4 or more.

6. The color filter according to claim 5 ,
wherein X 1 is a bromine atom.

7. The color filter according to claim 1 ,
wherein the colored pixel A includes a phthalocyanine pigment derivative.

8. The color filter according to claim 1 ,
wherein the colored pixel A includes a resin having an aromatic carboxyl group.

9. The color filter according to claim 1 ,
wherein the ultraviolet absorbing layer includes at least one selected from an ultraviolet absorber or a yellow colorant.

10. The color filter according to claim 1 , further comprising:
an another pixel which is different from the colored pixel A and is in contact with at least a part of a side surface of the colored pixel A.

11. The color filter according to claim 10 ,
wherein the another pixel includes a phthalocyanine pigment.

12. A solid-state imaging element comprising:
the color filter according to claim 1 .

13. An image display device comprising:
the color filter according to claim 1 .

Assignees

• Fujifilm Corp

Inventors

• Inabe Haruki

Classifications

• H10F39/8053

  Colour filters · CPC title

• G02B1/04

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

• C09B47/06

  Preparation from carboxylic acids or derivatives thereof {, e.g. anhydrides, amides, mononitriles, phthalimide, o-cyanobenzamide} · CPC title

• C09B67/0035

  Mixtures of phthalocyanines · CPC title

• C09B67/0033

  Blends of pigments; Mixtured crystals; Solid solutions · CPC title