Film, film forming method, optical filter, laminate, solid image pickup element, image display device, and infrared sensor

Patent metadata

Field	Value
Publication number	US-2018340070-A1
Application number	US-201816052051-A
Country	US
Kind code	A1
Filing date	Aug 1, 2018
Priority date	Feb 3, 2016
Publication date	Nov 29, 2018
Grant date	—

Abstract

Provided are a film having excellent heat resistance and a film forming method. In addition, provided are an optical filter, a laminate, a solid image pickup element, an image display device, and an infrared sensor. The film includes an aggregate of a dye and a resin, in which an average particle size of the aggregate of the dye is 30 to 450 nm.

First claim

What is claimed is:

1 . A film comprising:
an aggregate of a dye; and a resin, wherein the aggregate of the dye has an average particle size of 30 to 450 nm.

2 . The film according to claim 1 ,
wherein the resin has a glass transition temperature of 0° C. to 100° C.

3 . The film according to claim 1 ,
wherein the resin has a weight-average molecular weight of 20000 to 60000.

4 . The film according to claim 1 ,
wherein the dye is a compound having an absorption maximum in a wavelength range of 650 to 1000 nm.

5 . The film according to claim 1 ,
wherein the dye is at least one selected from the group consisting of a pyrrolopyrrole dye, a cyanine dye, and a squarylium dye.

6 . The film according to claim 1 , further comprising:
a coloring material that allows transmission of at least a part of light in an infrared range and shields light in a visible range.

7 . A film forming method for forming the film according to claim 1 , the film forming method comprising:
applying a composition including a dye, a resin, and a solvent to a support to form a composition layer on the support; and causing the dye included in the composition layer to aggregate.

8 . The film forming method according to claim 7 ,
wherein the causing the dye included in the composition layer to aggregate is performed by heating the composition layer at a temperature that is higher than the glass transition temperature of the resin by 20° C. to 80° C.

9 . The film forming method according to claim 7 ,
wherein the resin includes a resin having a polymerizable group and the composition further includes a photopolymerization initiator; or the composition includes a polymerizable compound other than the resin and a photopolymerization initiator, and the film forming method further comprises exposing the composition layer after the causing the dye included in the composition layer to aggregate.

10 . The film forming method according to claim 9 ,
wherein the composition includes the polymerizable compound, and a mass ratio resin/polymerizable compound of the resin to the polymerizable compound is 3 to 10.

11 . The film forming method according to claim 7 , further comprising:
forming a pattern.

12 . An optical filter comprising:
the film according to claim 1 .

13 . The optical filter according to claim 12 ,
wherein the optical filter is a color filter, an infrared cut filter, or an infrared transmitting filter.

14 . The optical filter according to claim 12 , further comprising:
an antireflection film.

15 . An optical filter comprising:
a pixel that includes the film according to claim 1 ; and a pixel selected from the group consisting of a red pixel, a green pixel, a blue pixel, a magenta pixel, a yellow pixel, a cyan pixel, a black pixel, and an achromatic pixel.

16 . A laminate comprising:
an infrared cut filter that includes the film according to claim 1 ; and a color filter that includes a chromatic colorant.

17 . A solid image pickup element comprising:
the film according to claim 1 .

18 . An image display device comprising:
the film according to claim 1 .

19 . An infrared sensor comprising:
the film according to claim 1 .

Assignees

• Fujifilm Corp

Inventors

• Oota Kazuya
• Arayama Kyohei
• Sasaki Daisuke
• Matsumura Tokihiko
• Kitajima Shunsuke

Classifications

• C09B23/00

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

• G03F7/038

  Macromolecular compounds which are rendered insoluble or differentially wettable (G03F7/075 takes precedence; macromolecular azides G03F7/012; macromolecular diazonium compounds G03F7/021) · CPC title

• G02B1/11

  Anti-reflection coatings · CPC title

• G02B5/22

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

• C09B11/28 Primary

  Pyronines {; Xanthon, thioxanthon, selenoxanthan, telluroxanthon dyes} · CPC title