Green coloring composition for use in color filter, colored film, color filter, and solid-state imaging device

Patent metadata

Field	Value
Publication number	US-9740095-B2
Application number	US-201615215656-A
Country	US
Kind code	B2
Filing date	Jul 21, 2016
Priority date	Jan 31, 2014
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

The present invention provides a green coloring composition for use in a color filter, which can form a green colored film having low incident-angle dependence and improves the color-separation properties of a solid-state imaging device including the colored film; and a colored film, a color filter, and a solid-state imaging device. The green coloring composition for use in a color filter of the present invention is a green coloring composition for use in a color filter, containing a green colorant, a near-infrared absorbent, and a polymerizable compound, in which when the green coloring composition for use in a color filter is used to form a colored film having a film thickness of 0.8 μm, the maximum value of the transmittance at a wavelength from 400 nm to 450 nm of the colored film is 5% or less, the maximum value of the transmittance at a wavelength from 500 nm to 600 nm of the colored film is 70% or more, the minimum value of the transmittance at a wavelength from 650 nm to less than 700 nm of the colored film is 20% or less, and the minimum value of the transmittance at a wavelength from 700 nm to 900 nm of the colored film is 30% or less.

First claim

What is claimed is:

1. A green coloring composition for use in a color filter, comprising a green colorant, a near-infrared absorbent, and a polymerizable compound, wherein
when the coloring composition is used to form a colored film having a film thickness of 0.8 μm,
the maximum value of the transmittance at a wavelength from 400 nm to 450 nm of the colored film is 5% or less,
the maximum value of the transmittance at a wavelength from 500 nm to 600 nm of the colored film is 70% or more,
the minimum value of the transmittance at a wavelength from 650 nm to less than 700 nm of the colored film is 20% or less,
the minimum value of the transmittance at a wavelength from 700 nm to 900 nm of the colored film is 30% or less, and
wherein the mass ratio of the green colorant to the near-infrared absorbent is 0.1 to 0.4, in which the mass ratio represents the mass of the green colorant/the mass of the near-infrared absorbent.

2. The green coloring composition for use in a color filter according to claim 1 , wherein the maximum value of the transmittance at a wavelength from 400 nm to 450 nm of the colored film is 4% or less.

3. The green coloring composition for use in a color filter according to claim 2 , wherein the maximum value of the transmittance at a wavelength from 500 nm to 600 nm of the colored film is 75% or more.

4. The green coloring composition for use in a color filter according to claim 2 , wherein the minimum value of the transmittance at a wavelength from 650 nm to less than 700 nm of the colored film is 15% or less.

5. The green coloring composition for use in a color filter according to claim 2 , wherein the minimum value of the transmittance at a wavelength from 700 nm to 900 nm of the colored film is 20% or less.

6. The green coloring composition for use in a color filter according to claim 1 , wherein the maximum value of the transmittance at a wavelength from 500 nm to 600 nm of the colored film is 75% or more.

7. The green coloring composition for use in a color filter according to claim 6 , wherein the minimum value of the transmittance at a wavelength from 650 nm to less than 700 nm of the colored film is 15% or less.

8. The green coloring composition for use in a color filter according to claim 6 , wherein the minimum value of the transmittance at a wavelength from 700 nm to 900 nm of the colored film is 20% or less.

9. The green coloring composition for use in a color filter according to claim 1 , wherein the minimum value of the transmittance at a wavelength from 650 nm to less than 700 nm of the colored film is 15% or less.

10. The green coloring composition for use in a color filter according to claim 9 , wherein the minimum value of the transmittance at a wavelength from 700 nm to 900 nm of the colored film is 20% or less.

11. The green coloring composition for use in a color filter according to claim 1 , wherein the minimum value of the transmittance at a wavelength from 700 nm to 900 nm of the colored film is 20% or less.

12. The green coloring composition for use in a color filter according to claim 1 , wherein the near-infrared absorbent includes a pyrrolopyrrole compound or a squarylium compound.

13. A colored film obtained by curing the green coloring composition for use in a color filter according to claim 1 .

14. A color filter comprising the colored film according to claim 13 .

15. A solid-state imaging device comprising the color filter according to claim 14 .

16. The green coloring composition for use in a color filter according to claim 1 , wherein the near-infrared absorbent includes a pyrrolopyrrole compound.

17. The green coloring composition for use in a color filter according to claim 1 , wherein the near-infrared absorbent includes a squarylium compound.

18. The green coloring composition for use in a color filter according to claim 1 , wherein the content of the green colorant contained in the composition is 5% by mass to 20% by mass with respect to the total solid content of the composition.

19. The green coloring composition for use in a color filter according to claim 1 , wherein the content of the near-infrared absorbent contained in the composition is 10% by mass to 65% by mass with respect to the total solid content of the composition.

Assignees

• Fujifilm Corp

Inventors

• Murayama Satoru
• Shimada Kazuto

Classifications

• G03F7/105 Primary

  having substances, e.g. indicators, for forming visible images · CPC title

• C09B23/00

  Methine or polymethine dyes, e.g. cyanine dyes · CPC title

• G03F7/0007 Primary

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

• G02B5/223

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

• H01L27/14

  Electricity · mapped topic