JP6764894B2 - Composition for infrared transmission filter, infrared transmission filter, manufacturing method of infrared transmission filter, and infrared sensor - Google Patents

Description

The present invention relates to a composition for an infrared transmission filter, an infrared transmission filter, a method for manufacturing an infrared transmission filter, and an infrared sensor.

Color filters are indispensable components for solid-state image sensors and liquid crystal displays. In particular, color filters for solid-state image sensors are required to have improved color separation and color reproducibility.

Such a color filter is formed to include colored regions (colored cured films) having a plurality of hues, and is usually formed with at least red, green, and blue colored regions (hereinafter, "colored pattern" or "colored"). Also referred to as "pixels"). As a method for forming a coloring pattern, first, in the first hue, a colored sensational radiation composition having any of red, green, and blue colorants is applied, and exposure, development, and heat treatment as necessary are performed. After forming a coloring pattern of the hue, the same coating, exposure, developing, and heat treatment processes as necessary are repeated in the second hue and the third hue.

As a colorant in a color filter, a pigment is widely used because it has a clear color tone and a high coloring power. In particular, a pigment that is finely divided and exhibits suitable color separation property can be used. preferable.
Recently, in a solid-state image sensor, it has been required to make colored pixels finer (for example, a colored pattern having a side of 1.0 μm or less) for the purpose of improving resolution. However, with the miniaturization of colored pixels, It is known that noise increases.

Solid-state image sensors are used as optical sensors in various applications.
For example, near-infrared rays have a longer wavelength than visible light, so they are less likely to scatter and can be used for distance measurement and three-dimensional measurement. In addition, since near-infrared rays are invisible to humans and animals, even if the subject is illuminated with a near-infrared light source at night, the subject is not noticed and stimulates the other party for shooting nocturnal wild animals and for crime prevention. It can also be used for shooting without. Such an optical sensor that senses near infrared rays can be developed in various applications, and the development of a color filter that can be used for a solid-state image sensor that senses near infrared rays has been awaited.

For example, a resin black matrix is known in which light absorption is small in the near-infrared to infrared wavelength region and light transmittance is high in this wavelength region (for example, Patent Document 1), but it is still near. The transmission of the infrared region is insufficient, and it is particularly difficult to use it as an infrared transmission filter in an infrared sensor for detecting the near infrared region.
Further, in recent years, an infrared transmission filter having a very thin thickness (for example, a thickness of 0.5 μm) has been required, but as the thickness becomes thinner, the light-shielding property of the infrared transmission filter with respect to visible light tends to decrease (that is,). , Noise derived from the visible light component is likely to occur), and as a result, there is a problem that the performance as an infrared sensor is deteriorated.

JP-A-2009-69822

The present invention has been made in view of the above circumstances, and an object of the present invention is to achieve the following object.
That is, the present invention can produce an infrared transmission filter capable of transmitting infrared rays (particularly near infrared rays) even if it is very thin (for example, a thickness of 0.5 μm) with little noise derived from visible light components. It is an object of the present invention to provide a composition for an infrared transmission filter, a method for manufacturing an infrared transmission filter, an infrared transmission filter, and an infrared sensor using the composition.

As a result of diligent research in view of the above circumstances, the present inventors have found that an infrared transmission filter formed by using a composition for an infrared transmission filter containing a near-infrared transmission black color material can achieve the above-mentioned problems. We have found and completed the present invention. That is, the present invention is as follows.
<1>
A composition for an infrared transmission filter containing a near-infrared transmission black color material, wherein the near-infrared transmission black color material is selected from the group consisting of bisbenzofuranone-based pigments, azomethine-based pigments, and perylene-based pigments. The content of the near-infrared transmissive black color material is 20 to 80% by mass based on the total solid content of the composition for the infrared transmissive filter, and the composition for the infrared transmissive filter is: Further, the composition for an infrared transmission filter contains a colorant different from that of the near-infrared transmissive black colorant, the colorant is one or more selected from organic pigments, and the content of the colorant is the composition for the infrared transmission filter. When a film having a thickness of 0.5 μm and a total solid content of 1 to 30% by mass was formed, the standard deviation of the light transmittance in the thickness direction of the film in the wavelength range of 400 to 630 nm was 6. A composition for an infrared transmission filter, which is 0 or less.
<2>
A composition for an infrared transmission filter containing a near-infrared transmission black color material, wherein the near-infrared transmission black color material is selected from the group consisting of bisbenzofuranone-based pigments, azomethine-based pigments, and perylene-based pigments. The content of the near-infrared transmissive black color material is 20 to 80% by mass based on the total solid content of the composition for the infrared transmissive filter, and the composition for the infrared transmissive filter is: Further, the composition for an infrared transmission filter contains a colorant different from that of the near-infrared transmissive black colorant, the colorant is one or more selected from organic pigments, and the content of the colorant is the composition for the infrared transmission filter. When a film having a thickness of 0.5 μm, which is 1 to 30% by mass based on the total solid content, is formed, the maximum value of the light transmittance in the thickness direction of the film in the wavelength range of 400 to 650 nm is 20%. The composition for an infrared transmission filter, wherein the minimum value of the light transmittance in the thickness direction of the film in the wavelength range of 800 nm to 1300 nm is 80% or more.
<3>
A composition for an infrared transmission filter containing a near-infrared transmission black color material, wherein the near-infrared transmission black color material is selected from the group consisting of bisbenzofuranone-based pigments, azomethine-based pigments, and perylene-based pigments. The content of the near-infrared transmissive black color material is 20 to 80% by mass based on the total solid content of the infrared transmissive filter composition, and the infrared transmissive filter composition is: Further, the composition for an infrared transmission filter contains a colorant different from that of the near-infrared transmission black colorant, the colorant is one or more selected from organic pigments, and the content of the colorant is the composition for the infrared transmission filter. The composition for the infrared transmission filter is 1 to 30% by mass with respect to the total solid content, further contains an alkali-soluble resin, and the content of the alkali-soluble resin is the total solid of the composition for the infrared transmission filter. A composition for an infrared transmission filter, which is 1 to 15% by mass based on a minute.
<4>
The composition for an infrared transmission filter according to <3>, wherein the content of the alkali-soluble resin is 3 to 10% by mass with respect to the total solid content of the composition for an infrared transmission filter.
<5>
Item 2. Infrared transmission according to any one of <1> to <4>, wherein the near-infrared transmission black color material is at least one selected from the group consisting of bisbenzofuranone-based pigments and perylene-based pigments. Composition for filter.
<6>
The infrared ray according to any one of <1> to <5>, wherein the content of the near-infrared transmissive black color material is 40 to 80% by mass with respect to the total solid content of the composition for an infrared transmissive filter. Composition for transmission filter.
<7>
The composition for an infrared transmission filter according to any one of <1> to <6>, wherein the average particle size of the near infrared transmission black color material is 50 nm or less.
<8>
The composition for an infrared transmission filter according to any one of <1> to <7>, wherein the colorant is a yellow pigment.
<9>
The yellow pigment is C.I. I. The composition for an infrared transmission filter according to <8>, which is Pigment Yellow 139.
<10>
The composition for an infrared transmission filter according to any one of <1> to <7>, wherein the colorant comprises two kinds of organic pigments.
<11>
Further, the composition for an infrared transmission filter according to any one of <1> to <10>, which contains a polymer dispersant, wherein the polymer dispersant is a resin having an acid value of 60 mgKOH / g or more. , A composition for an infrared transmission filter, which is one or more selected from the group consisting of a resin having an amine group and an oligoimine-based resin.
<12>
The composition for an infrared transmission filter according to any one of <1> to <11>, which further contains a polymerizable compound.
<13>
The polymerizable compound is radically polymerizable represented by the following general formulas (MO-1) to (MO-5).
The composition for an infrared transmission filter according to <12>, which is one or more selected from the group consisting of monomers.

In the general formula, n is 0 to 14 and m is 1 to 8. A plurality of R and T existing in one molecule may be the same or different. When T is an oxyalkylene group, the end on the carbon atom side is bonded to R.
In each of the polymerizable compounds represented by the general formulas (MO-1) to (MO-5), at least one of a plurality of Rs present is -OC (= O) CH = CH ₂ or -OC (=). O) Represents a group represented by C (CH ₃ ) = CH ₂ .
<14>
The composition for an infrared transmission filter according to <12> or <13>, wherein the content of the polymerizable compound is 2 to 25% by mass with respect to the total solid content of the composition for an infrared transmission filter.
<15>
The composition for an infrared transmission filter according to any one of <1> to <14>, which further contains a photopolymerization initiator.
<16>
The composition for an infrared transmission filter according to any one of <1> to <15>, which further contains a surfactant.
<17>
The composition for an infrared transmission filter according to <16>, wherein the surfactant is a fluorine-based surfactant.
<18>
The composition for an infrared transmission filter according to <1> or <2>, which further contains an alkali-soluble resin.
<19>
A composition for an infrared transmission filter containing a near-infrared transmission black color material, wherein the near-infrared transmission black color material is selected from the group consisting of bisbenzofuranone-based pigments, azomethine-based pigments, and perylene-based pigments. The content of the near-infrared transmissive black color material is 20 to 80% by mass based on the total solid content of the infrared transmissive filter composition, and the infrared transmissive filter composition is: Further, the composition for an infrared transmission filter contains a colorant different from that of the near-infrared transmission black color material, the colorant is one or more selected from organic pigments, and the content of the colorant is the composition for the infrared transmission filter. It is 1 to 30% by mass based on the total solid content, and the colorant is C.I. I. Pigment Yellow 139, a composition for an infrared transmission filter.
<20>
The composition for an infrared transmission filter according to <19>, wherein the near-infrared transmission black color material is at least one selected from the group consisting of bisbenzofuranone-based pigments and perylene-based pigments.
<21>
The composition for an infrared transmission filter according to <19> or <20>, wherein the content of the near-infrared transmission black color material is 40 to 80% by mass with respect to the total solid content of the composition for an infrared transmission filter. ..
<22>
The composition for an infrared transmission filter according to any one of <19> to <21>, wherein the average particle size of the near-infrared transmission black color material is 50 nm or less.
<23>
Further, the composition for an infrared transmission filter according to any one of <19> to <22>, which contains a polymer dispersant, wherein the polymer dispersant is a resin having an acid value of 60 mgKOH / g or more. , A composition for an infrared transmission filter, which is one or more selected from the group consisting of a resin having an amine group and an oligoimine-based resin.
<24>
The composition for an infrared transmission filter according to any one of <19> to <23>, which further contains a polymerizable compound.
<25>
The composition for an infrared transmission filter according to <24>, wherein the polymerizable compound is at least one selected from the group consisting of radically polymerizable monomers represented by the following general formulas (MO-1) to (MO-5). object.


In the general formula, n is 0 to 14 and m is 1 to 8. A plurality of R and T existing in one molecule may be the same or different. When T is an oxyalkylene group, the end on the carbon atom side is bonded to R.
In each of the polymerizable compounds represented by the general formulas (MO-1) to (MO-5), at least one of a plurality of Rs present is -OC (= O) CH = CH ₂ or -OC (=). O) C (CH ₃ ) = represents a group represented by CH ₂ .
<26>
The composition for an infrared transmission filter according to <24> or <25>, wherein the content of the polymerizable compound is 2 to 25% by mass with respect to the total solid content of the composition for an infrared transmission filter.
<27>
The composition for an infrared transmission filter according to any one of <19> to <26>, which further contains a photopolymerization initiator.
<28>
The composition for an infrared transmission filter according to any one of <19> to <27>, which further contains an alkali-soluble resin.
<29>
The composition for an infrared transmission filter according to any one of <19> to <28>, which further contains a surfactant.
<30>
The composition for an infrared transmission filter according to <29>, wherein the surfactant is a fluorine-based surfactant.
<31>
An infrared transmission filter formed from the composition for an infrared transmission filter according to any one of <1> to <30>.
<32>
The step of applying the composition for an infrared transmission filter according to any one of <1> to <30> on a substrate to form an infrared transmission composition layer, and forming the infrared transmission composition layer into a pattern. A method for manufacturing an infrared transmission filter, comprising a step of exposing and a step of developing the infrared transmission composition layer after exposure to form a pattern.
<33>
An infrared sensor containing the infrared transmission filter according to <31>.
<34>
A composition for an infrared transmission filter containing a near-infrared transmission black color material, wherein the near-infrared transmission black color material is selected from the group consisting of bisbenzofuranone-based pigments, azomethine-based pigments, and perylene-based pigments. The content of the near-infrared transmissive black color material is 20 to 80% by mass based on the total solid content of the infrared transmissive filter composition, and the infrared transmissive filter composition is: Further, the composition for an infrared transmission filter contains a colorant different from that of the near-infrared transmission black color material, the colorant is one or more selected from organic pigments, and the content of the colorant is the composition for the infrared transmission filter. An infrared sensor containing an infrared transmission filter formed from a composition for an infrared transmission filter, which is 1 to 30% by mass based on the total solid content.
The present invention relates to the composition for an infrared transmission filter, an infrared transmission filter, a method for manufacturing an infrared transmission filter, and an infrared sensor according to the above <1> to <34>, but other matters are also referred to. To describe.
(1)
A composition for an infrared transmission filter containing a near-infrared transmission black color material, wherein the near-infrared transmission black color material is selected from the group consisting of bisbenzofuranone-based pigments, azomethine-based pigments, and perylene-based pigments. The content of the near-infrared transmissive black color material is 20 to 80% by mass based on the total solid content of the infrared transmissive filter composition, and the infrared transmissive filter composition is: Further, the composition for an infrared transmission filter contains a colorant different from that of the near-infrared transmission black color material, the colorant is one or more selected from organic pigments, and the content of the colorant is the composition for the infrared transmission filter. A composition for an infrared transmission filter, which is 1 to 30% by mass based on the total solid content.
(2)
The composition for an infrared transmission filter according to (1), wherein the near-infrared transmission black color material is at least one selected from the group consisting of bisbenzofuranone-based pigments and perylene-based pigments.
(3)
The composition for an infrared transmission filter according to (1) or (2), wherein the content of the near-infrared transmission black color material is 40 to 80% by mass with respect to the total solid content of the composition for an infrared transmission filter. ..
(4)
The composition for an infrared transmission filter according to any one of (1) to (3), wherein the average particle size of the near-infrared transmission black color material is 50 nm or less.
(5)
The composition for an infrared transmission filter according to any one of (1) to (4), wherein the colorant is a yellow pigment.
(6)
The yellow pigment is C.I. I. The composition for an infrared transmission filter according to (5), which is Pigment Yellow 139.
(7)
The composition for an infrared transmission filter according to any one of (1) to (4), wherein the colorant comprises two kinds of organic pigments.
(8)
Further, the composition for an infrared transmission filter according to any one of (1) to (7), which contains a polymer dispersant, wherein the polymer dispersant is a resin having an acid value of 60 mgKOH / g or more. , A composition for an infrared transmission filter, which is one or more selected from the group consisting of a resin having an amine group and an oligoimine-based resin.
(9)
The composition for an infrared transmission filter according to any one of (1) to (8), which further contains a polymerizable compound.
(10)
The composition for an infrared transmission filter according to (9), wherein the polymerizable compound is at least one selected from the group consisting of radically polymerizable monomers represented by the following general formulas (MO-1) to (MO-5). object.

In the above general formula, n is 0 to 14 and m is 1 to 8. A plurality of R and T existing in one molecule may be the same or different. When T is an oxyalkylene group, the end on the carbon atom side is bonded to R.
In each of the polymerizable compounds represented by the general formulas (MO-1) to (MO-5), at least one of a plurality of Rs present is -OC (= O) CH = CH ₂ or -OC (=). O) Represents a group represented by C (CH ₃ ) = CH ₂ .
(11)
The composition for an infrared transmission filter according to (9) or (10), wherein the content of the polymerizable compound is 2 to 25% by mass with respect to the total solid content of the composition for an infrared transmission filter.
(12)
The composition for an infrared transmission filter according to any one of (1) to (11), further containing a photopolymerization initiator.
(13)
The composition for an infrared transmission filter according to any one of (1) to (12), further containing an alkali-soluble resin.
(14)
The composition for an infrared transmission filter according to (13), wherein the content of the alkali-soluble resin is 1 to 15% by mass with respect to the total solid content of the composition for an infrared transmission filter.
(15)
The composition for an infrared transmission filter according to (14), wherein the content of the alkali-soluble resin is 3 to 10% by mass with respect to the total solid content of the composition for an infrared transmission filter.
(16)
The composition for an infrared transmission filter according to any one of (1) to (15), which further contains a surfactant.
(17)
The composition for an infrared transmission filter according to (16), wherein the surfactant is a fluorine-based surfactant.
(18)
Any of (1) to (17), wherein when a film having a film thickness of 0.5 μm is formed, the standard deviation of the light transmittance in the thickness direction of the film in the wavelength range of 400 to 630 nm is 6.0 or less. The composition for an infrared transmission filter according to item 1.
(19)
When a film having a thickness of 0.5 μm is formed, the maximum value of the light transmittance in the thickness direction of the film in the wavelength range of 400 to 650 nm is 20% or less, and the light transmittance in the thickness direction of the film is The composition for an infrared transmittance filter according to any one of (1) to (18), wherein the minimum value in the wavelength range of 800 nm to 1300 nm is 80% or more.
(20)
An infrared transmission filter formed from the composition for an infrared transmission filter according to any one of (1) to (19).
(21)
The step of applying the composition for an infrared transmission filter according to any one of (1) to (19) on a substrate to form an infrared transmission composition layer, and forming the infrared transmission composition layer into a pattern. A method for manufacturing an infrared transmission filter, comprising a step of exposing and a step of developing the infrared transmission composition layer after exposure to form a pattern.
(22)
An infrared sensor containing the infrared transmission filter according to (20).
The present invention relates to the composition for an infrared transmission filter, an infrared transmission filter, a method for manufacturing an infrared transmission filter, and an infrared sensor according to the above (1) to (22), but other matters are also for reference. Described in.

[1]
A composition for a color filter containing a near-infrared transmissive black color material.
[2]
The composition for a color filter according to the above [1], further containing a photopolymerization initiator and a polymerizable compound.
[3]
The near-infrared transmissive black color material is at least one selected from the group consisting of bisbenzofuranone pigments, azomethine pigments, perylene pigments, and azo dyes, according to the above [1] or [2]. The composition for a color filter according to.
[4]
When a film having a film thickness of 0.5 μm is formed, the standard deviation of the light transmittance in the thickness direction of the film in the wavelength range of 400 to 630 nm is 6.0 or less, as described in [1] to [3] above. The composition for a color filter according to any one of the items.
[5]
In any one of the above [1] to [4], the near-infrared transmissive black pigment is contained as the near-infrared transmissive black color material, and the average particle size of the near-infrared transmissive black pigment is 50 nm or less. The composition for a color filter described.
[6]
When a film having a thickness of 0.5 μm is formed, the maximum value of the light transmittance in the thickness direction of the film in the wavelength range of 400 to 650 nm is 20% or less, and the light transmittance in the thickness direction of the film is The composition for a color filter according to any one of the above [1] to [5], wherein the minimum value in the wavelength range of 800 nm to 1300 nm is 80% or more.
[7]
Further, the composition for a color filter according to any one of the above [1] to [6], which contains a polymer dispersant, wherein the polymer dispersant is a resin having an acid value of 60 mgKOH / g or more. A composition for a color filter, which is one or more selected from the group consisting of a resin having an amine group and an oligoimine-based resin.
[8]
The composition for a color filter according to any one of the above [1] to [7], further containing a colorant different from the near-infrared transmissive black color material.
[9]
An infrared transmission filter formed from the composition for a color filter according to any one of the above [1] to [8].
[10]
The step of applying the composition for a color filter according to any one of the above [1] to [8] onto a substrate to form an infrared transmissive composition layer, and exposing the infrared transmissive composition layer in a pattern. A method for producing an infrared transmissive filter, comprising a step of developing the infrared transmissive composition layer after exposure to form a pattern.
[11]
An infrared sensor containing an infrared transmission filter according to the above [9] or an infrared transmission filter obtained by the method for manufacturing an infrared transmission filter according to the above [10].

According to the present invention, it is possible to create an infrared transmission filter capable of transmitting infrared rays (particularly near infrared rays) even if it is very thin (for example, a thickness of 0.5 μm) with little noise derived from visible light components and the like. A composition for an infrared transmission filter, an infrared transmission filter, a method for manufacturing an infrared transmission filter, and an infrared sensor using the same composition can be provided.

Hereinafter, the present invention will be described in detail.

The description of the constituent elements described below may be based on typical embodiments of the present invention, but the present invention is not limited to such embodiments. The numerical range represented by using "~" in the present specification means a range including the numerical values before and after "~" as the lower limit value and the upper limit value.

The composition for an infrared transmission filter of the present invention contains a near-infrared transmission black color material.
The composition for an infrared transmission filter of the present invention is typically a black composition, and can also be said to be a near infrared transmission composition because it transmits near infrared rays.

Hereinafter, each component that can constitute the composition of the present invention will be described.

<(A) Near infrared transmissive black color material>
As described above, the composition for an infrared transmission filter of the present invention contains a near-infrared transmission black color material.
According to such a composition for an infrared transmission filter of the present invention, even if it is very thin (for example, a thickness of 0.5 μm), infrared rays (particularly near infrared rays) are in a state where there is little noise derived from visible light components and the like. You can create an infrared transmission filter that can transmit light.

The near-infrared transmissive black color material in the composition for an infrared transmission filter of the present invention is a color material that selectively transmits near-infrared light, and has a film thickness of 0.5 μm according to the composition for an infrared transmissive filter. In addition, when a film having a concentration of 60% by mass based on the total solid content of its own (near-infrared transmissive black color material) film is formed, the light transmittance in the thickness direction of the film is in the wavelength range of 400 to 650 nm. It is preferable that the color material has a maximum value of 30% or less and a minimum value of 80% or more in the wavelength range of 800 nm to 1300 nm, and the wavelength of the light transmittance in the thickness direction of the film is 400 to 650 nm. It is particularly preferable that the color material has a maximum value in the range of 20% or less and a minimum value in the wavelength range of 800 nm to 1300 nm of 80% or more.

The method for measuring the spectral characteristics, film thickness, etc. of the film formed from the composition in the present invention is shown below.
The composition of the present invention is applied onto a glass substrate by a method such as spin coating so that the film thickness after drying is 0.5 μm, a film is provided, and the composition is dried on a hot plate at 100 ° C. for 120 seconds. did.
The film thickness of the film was measured by using a stylus type surface shape measuring device (DEKTAK150 manufactured by ULVAC) on the dried substrate having the film.
The dried substrate having this film is transmitted in the wavelength range of 300 to 1300 nm using a spectrophotometer (ref. Glass substrate) of an ultraviolet-visible near-infrared spectrophotometer (U-4100 manufactured by Hitachi High-Technologies Corporation). The rate was measured.

The near-infrared transmissive black color material may be a near-infrared transmissive black pigment or a near-infrared transmissive black dye, but a near-infrared transmissive black pigment is preferable.

As the near-infrared transmissive black pigment, bisbenzofuranone-based pigments, azomethine-based pigments, perylene-based pigments and the like can be preferably mentioned.
As the near-infrared transmissive black dye, an azo dye or the like can be preferably mentioned.

That is, the near-infrared transmissive black color material is preferably one or more selected from the group consisting of bisbenzofuranone-based pigments, azomethine-based pigments, perylene-based pigments, and azo-based dyes, and is preferably bisbenzofuranone-based. It is more preferably one or more selected from the group consisting of pigments, azomethine pigments, and azo dyes, and even more preferably bisbenzofuranone pigments.

Examples of the bisbenzofuranone pigment include those described in JP-A-2012-528448, JP-A-2010-534726, JP-A-2012-515234 and the like. For example, "IRGAPHOR BK" manufactured by BASF. It is available as.
Examples of the azomethine-based pigment include those described in JP-A-1-170601, JP-A-2-34664 and the like, and can be obtained as, for example, "Chromofine Black A1103" manufactured by Dainichiseika.
The azo dye is not particularly limited, but a compound represented by the following formula (A-1) and the like can be preferably mentioned.

The composition for an infrared transmission filter of the present invention preferably contains a near-infrared transmission black pigment as a near-infrared transmission black color material, and in this case, the average particle size of the near-infrared transmission black pigment is 50 nm or less. It is preferably 30 nm or less, and more preferably 30 nm or less. The average particle size of the near-infrared transmissive black pigment is usually 1 nm or more.
Here, the average particle size of the pigment in the present specification is based on the measurement using MICROTRACUPA 150 manufactured by Nikkiso Co., Ltd.
The content of the near-infrared transmissive black color material is preferably 20 to 80% by mass, more preferably 40 to 80% by mass, based on the total solid content of the composition for an infrared transmissive filter of the present invention. preferable.

<(B) Colorant>
The composition for an infrared transmission filter of the present invention may contain a colorant (B) different from the above-mentioned near infrared transmission black color material.
Examples of the colorant (B) include pigments and dyes.

The pigment is preferably an organic pigment, and the following can be mentioned. However, the present invention is not limited thereto.
C. I. Pigment Yellow 1,2,3,4,5,6,10,11,12,13,14,15,16,17,18,20,24,31,32,34,35,35: 1,36, 36: 1,37,37: 1,40,42,43,53,55,60,61,62,63,65,73,74,77,81,83,86,93,94,95,97, 98,100,101,104,106,108,109,110,113,114,115,116,117,118,119,120,123,125,126,127,128,129,137,138,139, 147,148,150,151,152,153,154,155,156,161,162,164,166,167,168,169,170,171,172,173,174,175,176,177,179, 180,181,182,185,187,188,193,194,199,213,214 etc. (above, yellow pigment),
C. I. Pigment Orange 2,5,13,16,17: 1,31,34,36,38,43,46,48,49,51,52,55,59,60,61,62,64,71,73, etc. (The above is orange pigment),
C. I. Pigment Red 1,2,3,4,5,6,7,9,10,14,17,22,23,31,38,41,48: 1,48: 2,48: 3,48: 4, 49,49: 1,49: 2,52: 1,52: 2,53: 1,57: 1,60: 1,63: 1,66,67,81: 1,81: 2,81: 3, 83,88,90,105,112,119,122,123,144,146,149,150,155,166,168,169,170,171,172,175,176,177,178,179,184 185,187,188,190,200,202,206,207,208,209,210,216,220,224,226,242,246,254,255,264,270,272,279 etc. (above, red) Pigment),

C. I. Pigment Green 7, 10, 36, 37, 58, etc. (above, green pigment),
C. I. Pigment Violet 1,19,23,27,32,37,42, etc. (above, purple pigment),
C. I. Pigment Blue 1,2,15,15: 1,15: 2,15: 3,15: 4,15: 6,16,22,60,64,66,79,80 etc. (above, blue pigment),
C. I. Pigment Black 1,7,31,32, Lumogen Black FK4280 (manufactured by BASF), Lumogen Black FK 4281 (manufactured by BASF), etc. (above, black pigment)
These organic pigments can be used alone or in various combinations.

The dye is not particularly limited, and a dye known conventionally for a color filter can be used.

The chemical structures include pyrazole azo, anilino azo, triphenylmethane, anthraquinone, anthrapiridone, benzylidene, oxonol, pyrazolotriazole azo, pyridone azo, cyanine, phenothiazine, pyrrolopyrazole azomethine, Dyes such as xatene-based, phthalocyanine-based, benzopyran-based, indigo-based, and pyrromethene-based dyes can be used. Moreover, you may use the multimer of these dyes.

Further, as the dye, an acid dye and / or a derivative thereof may be preferably used.
In addition, direct dyes, basic dyes, mordant dyes, acidic mordant dyes, azoic dyes, disperse dyes, oil-soluble dyes, food dyes, and / or derivatives thereof can also be usefully used.

Specific examples of acid dyes are given below, but the present invention is not limited thereto. For example
acid alizarin violet N; acid black 1,2,24,48; acid blue 1,7,9,15,18,23,25,27,29,40-45,62,70,74,80,83,86 , 87, 90, 92, 103, 112, 113, 120, 129, 138, 147, 158, 171, 182, 192, 243, 324: 1; acid chrome violet K; acid fuchsin; acid green 1, 3, 5 , 9,16,25,27,50; acid chrome 6,7,8,10,12,50,51,52,56,63,74,95; acid
red 1,4,8,14,17,18,26,27,29,31,34,35,37,42,44,50,51,52,57,66,73,80,87,88,91 , 92, 94, 97, 103, 111, 114, 129, 133, 134, 138, 143, 145, 150, 151, 158, 176, 183, 198, 211, 215, 216, 217, 249, 252, 257. , 260,266,274; acid violet 6B, 7,9,17,19; acid yellow 1,3,7,9,11,17,23,25,29,34,36,42,54,72,73 , 76, 79, 98, 99, 111, 112, 114, 116, 184, 243; Food Yellow 3; and derivatives of these dyes.

In addition to the above, azo-based, xanthene-based, and phthalocyanine-based acid dyes are also preferable. I. Solvent Blue 44, 38; C.I. I. Acid dyes such as Solvent orange 45; Rhodamine B and Rhodamine 110 and derivatives of these dyes are also preferably used.

Among them, the dyes include triarylmethane, anthraquinone, azomethine, benziliden, oxonol, cyanine, phenothiazine, pyrrolopyrazoleazomethine, xanthene, phthalocyanine, benzopyran, indigo, and pyrazoleazo. , Anilinoazo-based, pyrazolotriazole-azo-based, pyridone-azo-based, anthrapyridone-based pyrromethene-based colorants are preferable.
Further, a pigment and a dye may be used in combination.

The content of the colorant (B) is preferably 1 to 60% by mass, more preferably 1 to 30% by mass, based on the total solid content of the composition for an infrared transmission filter of the present invention.

The composition for an infrared transmission filter of the present invention has one or more colorants (for example, yellow pigment, orange pigment, red pigment, green pigment, purple pigment) different from the near infrared transmission black color material (A). , One or more colorants selected from the group consisting of blue pigments, black pigments, etc.), which will be described in detail later, "when a film having a thickness of 0.5 μm is formed, in the thickness direction of the film. The "standard deviation of the light transmittance in the wavelength range of 400 to 630 nm" can be further reduced.
In this case, the colorant (B) is in the range of 1 part by mass to 300 parts by mass, preferably in the range of 1 part by mass to 200 parts by mass with respect to 100 parts by mass of the near-infrared transmissive black color material (A). is there.
When the composition for an infrared transmission filter of the present invention contains a pigment as the colorant (B), the average particle size of the pigment is preferably 300 nm or less, more preferably 200 nm or less. The average particle size of the pigment as the colorant (B) is usually 10 nm or more.

The near-infrared transmissive black pigment having the above-mentioned average particle size (or a mixed pigment of the near-infrared transmissive black pigment having the above-mentioned average particle size and the pigment as the colorant (B)) is near-infrared transmissive. It can be prepared by mixing and dispersing the black pigment (or the mixed pigment) as a pigment mixed solution preferably mixed with a dispersant and a solvent while pulverizing using a crusher such as a bead mill or a roll mill. .. The pigment thus obtained usually takes the form of a pigment dispersion.

-Pigment miniaturization-
In the present invention, it is preferable to use a fine and sized pigment. To refine the pigment, a high-viscosity liquid composition is prepared together with the pigment, a water-soluble organic solvent, and a water-soluble inorganic salt, and a wet pulverizer or the like is used to apply stress to grind the pigment. Achieved.

Water-soluble organic solvents used in the pigment micronization step include methanol, ethanol, isopropanol, n-propanol, isobutanol, n-butanol, ethylene glycol, diethylene glycol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, and diethylene glycol monobutyl ether. , Propylene glycol, propylene glycol monomethyl ether acetate and the like.
In addition, other solvents having low water solubility or non-water solubility, such as benzene, toluene, xylene, ethyl benzene, chlorobenzene, as long as they are not adsorbed on the pigment by using a small amount and washed away into the waste water. Nitrobenzene, aniline, pyridine, quinoline, tetrahydrofuran, dioxane, ethyl acetate, isopropyl acetate, butyl acetate, hexane, heptane, octane, nonane, decane, undecane, dodecane, cyclohexane, methylcyclohexane, halogenated hydrocarbons, acetone, methyl ethyl ketone, methyl Isobutyl ketone, cyclohexanone, dimethylformamide, dimethylsulfoxide, N-methylpyrrolidone and the like may be used.
The solvent used in the pigment miniaturization step may be only one type, or two or more types may be mixed and used if necessary.

Examples of the water-soluble inorganic salt used in the pigment refining step in the present invention include sodium chloride, potassium chloride, calcium chloride, barium chloride, sodium sulfate and the like.
The amount of the water-soluble inorganic salt used in the miniaturization step is 1 to 50 times by mass of the pigment, and the larger the amount, the more the grinding effect is, but the more preferable amount is 1 to 10 times by mass in terms of productivity. Further, it is preferable to use inorganic salts having a water content of 1% or less.
The amount of the water-soluble organic solvent used in the miniaturization step is in the range of 50 parts by mass to 300 parts by mass, preferably in the range of 100 parts by mass to 200 parts by mass with respect to 100 parts by mass of the pigment.

The operating conditions of the wet pulverizer in the pigment refining step are not particularly limited, but in order to effectively proceed with pulverization by the pulverizing media, the operating conditions when the apparatus is a kneader are the rotation speeds of the blades in the apparatus. Is preferably 10 to 200 rpm, and a relatively large biaxial rotation ratio is preferable because the grinding effect is large. The operation time is preferably 1 hour to 8 hours together with the dry pulverization time, and the internal temperature of the apparatus is preferably 50 to 150 ° C. The water-soluble inorganic salt, which is a pulverized medium, preferably has a pulverized particle size of 5 to 50 μm, a sharp particle size distribution, and a spherical shape.

(Preparation of pigment dispersion)
The composition for an infrared transmissive filter of the present invention contains a near-infrared transmissive black pigment as a near-infrared transmissive black color material (A) (or near red as a near-infrared transmissive black color material (A)). (When containing an externally transmitted black pigment and a pigment as a colorant (B)), other components such as a pigment dispersant, an organic solvent, a pigment derivative, and a polymer compound, if necessary. To prepare a pigment dispersion, the pigment dispersion is prepared by mixing with (C) a photopolymerization initiator, (D) a polymerizable compound, and other components added as necessary. Is preferable.
The composition of the pigment dispersion and the method for preparing the pigment dispersion will be described in detail below.

The method for preparing the pigment dispersion liquid is not particularly limited, but as a dispersion method, for example, a pigment and a pigment dispersant or the like are mixed in advance and dispersed in advance with a homogenizer or the like, and zirconia beads or the like are used. This can be done by finely dispersing using a bead disperser (for example, a disperser mat manufactured by GETZMANN) or the like.

<Pigment dispersant>
Examples of the pigment dispersant that can be used for preparing the pigment dispersion liquid include a polymer dispersant (also referred to as a dispersion resin) [for example, a resin having an amine group (polyesteramine and its salt, etc.), an oligoimine resin, a polycarboxylic acid and the like. Salt, high molecular weight unsaturated acid ester, modified polyurethane, modified polyester, modified poly (meth) acrylate, (meth) acrylic copolymer, surfactant formalin sulfonic acid condensate], and polyoxyethylene alkyl phosphate, poly Examples thereof include surfactants such as oxyethylene alkylamine and alkanolamine, and pigment derivatives.
Polymer dispersants can be further classified into linear polymers, terminally modified polymers, graft-type polymers, and block-type polymers based on their structures.
Further, as the polymer dispersant, a resin having an acid value of 60 mgKOH / g or more (more preferably, an acid value of 60 mgKOH / g or more and 300 mgKOH / g or less) can be preferably mentioned.
The polymer dispersant is preferably one or more selected from the group consisting of a resin having an acid value of 60 mgKOH / g or more, a resin having an amine group, and an oligoimine-based resin. As a result, the dispersibility of the near-infrared transmissive black pigment can be further improved, and more near-infrared transmissive black pigment can be contained in the composition, so that the visible light component can be further shielded from light. As a result, it is possible to create an infrared transmission filter capable of transmitting infrared rays (particularly near infrared rays) with less noise derived from the visible light component.

Examples of the terminal-modified polymer having an anchor site on the pigment surface include a polymer having a phosphoric acid group at the end described in JP-A-3-112992, JP-A-2003-533455, and the like, JP-A-2002. Examples thereof include a polymer having a sulfonic acid group at the end described in JP-A-273191 and the like, and a polymer having a partial skeleton or a heterocycle of an organic dye described in JP-A-9-77994 and the like. Further, a polymer in which two or more anchor sites (acid groups, basic groups, partial skeletons of organic dyes, heterocycles, etc.) on the pigment surface are introduced into the polymer terminals described in JP-A-2007-277514 is also available. It has excellent dispersion stability and is preferable.

Examples of the graft-type polymer having an anchor site on the pigment surface include poly (lower alkyleneimines) described in JP-A-54-37082, JP-A-8-507960, JP-A-2009-258668 and the like. ) And the reaction product of polyester, the reaction product of polyallylamine and polyester described in JP-A-9-169821, etc., the macromonomer described in JP-A-10-339949, JP-A-2004-37986, etc. Copolymer with nitrogen atom monomer, graft type polymer having partial skeleton or heterocycle of organic dye described in JP-A-2003-238837, JP-A-2008-9426, JP-A-2008-81732, etc. , Copolymers of macromolecules and acid group-containing monomers described in JP-A-2010-106268 and the like can be mentioned. In particular, the amphoteric dispersion resin having a basic group and an acidic group described in JP-A-2009-203462 is from the viewpoint of dispersibility of the pigment dispersion, dispersion stability, and developability exhibited by the colored radiation-sensitive composition. Especially preferable.

A known macromonomer can be used as the macromonomer used when producing a graft-type polymer having an anchor site on the pigment surface by radical polymerization, and a macromonomer AA-6 (terminal) manufactured by Toa Synthetic Co., Ltd. can be used. Polymethyl methacrylate whose group is a methacryloyl group), AS-6 (polyester whose end group is a methacryloyl group), AN-6S (copolymer of styrene and acrylonitrile whose end group is a methacryloyl group), AB-6 ( Butyl polyacrylate whose terminal group is a methacryloyl group), Praxel FM5 (additional product of ε-caprolactone of 2-hydroxyethyl methacrylate with an equivalent of 5 mol), FA10L (2-hydroxyethyl acrylate) manufactured by Daicel Chemical Industries, Ltd. Ε-Caprolactone (10 mol equivalent addition product), polyester-based macromonomer described in JP-A-2-272009, and the like can be mentioned. Among these, the polyester-based macromonomer, which is particularly flexible and has excellent solvent resistance, is from the viewpoint of the dispersibility and dispersion stability of the pigment dispersion and the developability exhibited by the colored sensational radiation composition using the pigment dispersion. It is particularly preferable, and further, the polyester-based macromonomer represented by the polyester-based macromonomer described in JP-A-2-272009 is most preferable.

As the block-type polymer having an anchor site on the pigment surface, the block-type polymers described in JP-A-2003-49110, JP-A-2009-52010, and the like are preferable.

The pigment dispersant is also available as a commercially available product, and specific examples thereof include "Disperbyk-101 (polyamidoamine phosphate), 107 (carboxylic acid ester), 110 (copolymer containing an acid group) manufactured by BYK Chemie. Polymer), 130 (polyamide), 161, 162, 163, 164, 165, 166, 170 (polymer copolymer) "," BYK-P104, P105 (high molecular weight unsaturated polycarboxylic acid), manufactured by EFKA. "EFKA4047, 4050-4010-4165 (polyurethane type), EFKA4330-4340 (block copolymer), 4400-4402 (modified polyacrylate), 5010 (polyesteramide), 5765 (high molecular weight polycarboxylic acid salt), 6220 ( Fattylic acid polyester), 6745 (phthalocyanine derivative), 6750 (azo pigment derivative) ”, Ajinomoto Fan Techno Co., Ltd.“ Azispar PB821, PB822, PB880, PB881 ”, Kyoeisha Chemical Co., Ltd.“ Floren TG-710 (urethane oligomer) ”,“ Polyflow No. 50E, No. 300 (acrylic copolymer) ", Kusumoto Kasei Co., Ltd." Disparon KS-860, 873SN, 874, # 2150 (aliphatic polycarboxylic acid), # 7004 (polyether ester), DA-703-50, DA-705, DA-725 ", Kao" Demor RN, N (naphthalene sulfonic acid formalin polycondensate), MS, C, SN-B (aromatic sulfonic acid formalin polycondensate) , "Homogenol L-18 (high polymer polycarboxylic acid)", "Emulgen 920, 930, 935, 985 (polyoxyethylene nonylphenyl ether)", "Acetamine 86 (stearylamine acetate)", Nippon Lubrizol Co., Ltd. ) "Solsperse 5000 (phthalocyanine derivative), 22000 (azo pigment derivative), 13240 (polyesteramine), 3000, 17000, 27000 (polymer having a functional part at the end), 24000, 28000, 32000, 38500 (graft type) Polymer) ”, Nikko Chemical Co., Ltd.“ Nikkor T106 (polyoxyethylene sorbitan monooleate), MYS-IEX (polyoxyethylene monostearate) ”, Kawaken Fine Chemicals Co., Ltd. Hinoact T-8000E, etc. Organosiloxane Polymer KP341, manufactured by Yusho Co., Ltd. "W001: Cationic surfactant", manufactured by Yusho Co., Ltd. Nonionic surfactants such as polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene octylphenyl ether, polyoxyethylene nonylphenyl ether, polyethylene glycol dilaurate, polyethylene glycol distearate, and sorbitan fatty acid ester. Activators, anionic surfactants such as "W004, W005, W017", "EFKA-46, EFKA-47, EFKA-47EA, EFKA polymer 100, EFKA polymer 400, EFKA polymer 401, EFKA" manufactured by Morishita Sangyo Co., Ltd. Polymer dispersants such as "Polymer 450", "Disperse Aid 6, Disperse Aid 8, Disperse Aid 15, Disperse Aid 9100" manufactured by San Nopco Co., Ltd., "Adekapluronic L31, F38, L42" manufactured by ADEKA Co., Ltd. , L44, L61, L64, F68, L72, P95, F77, P84, F87, P94, L101, P103, F108, L121, P-123 ", and" Ionet S-20 "manufactured by Sanyo Kasei Co., Ltd. Be done.

These pigment dispersants may be used alone or in combination of two or more. In the present invention, it is particularly preferable to use a pigment derivative and a polymer dispersant in combination. Further, the pigment dispersant may be used as a pigment dispersant in combination with an alkali-soluble resin described later, together with a terminally modified polymer, a graft type polymer, and a block type polymer having an anchor site on the pigment surface. .. As the pigment dispersant, an alkali-soluble resin described later or a compound represented by the general formula (ED) may be used.

The content of the pigment dispersant in the pigment dispersion is preferably 1 to 80 parts by mass, more preferably 5 to 70 parts by mass, and preferably 10 to 60 parts by mass with respect to 100 parts by mass of the pigment. More preferred.
Specifically, when a polymer dispersant is used, the amount used is preferably in the range of 5 to 100 parts in terms of mass with respect to 100 parts by mass of the pigment, and is in the range of 10 to 80 parts. Is more preferable.
Here, the amount of the pigment means the total amount of the near-infrared transmissive black pigment and a pigment different from this (that is, the pigment as the colorant (B)).

<Pigment derivative>
The pigment dispersion liquid preferably further contains a pigment derivative.
The pigment derivative is a compound having a structure in which a part of an organic pigment is replaced with an acidic group, a basic group or a phthalimide methyl group. From the viewpoint of dispersibility and dispersion stability, the pigment derivative preferably contains a pigment derivative having an acidic group or a basic group.

Organic pigments for constituting pigment derivatives include diketopyrrolopyrrole pigments, azo pigments, phthalocyanine pigments, anthraquinone pigments, quinacridone pigments, dioxazine pigments, perinone pigments, perylene pigments, and thioindigo pigments. , Isoindrin pigments, isoindolinone pigments, quinophthalone pigments, slene pigments, metal complex pigments and the like.
Further, as the acidic group contained in the pigment derivative, a sulfonic acid, a carboxylic acid and a quaternary ammonium salt thereof are preferable, a carboxylic acid group and a sulfonic acid group are more preferable, and a sulfonic acid group is particularly preferable. As the basic group contained in the pigment derivative, an amino group is preferable, and a tertiary amino group is particularly preferable.

As the pigment derivative, quinoline-based, benzimidazolone-based and isoindoline-based pigment derivatives are particularly preferable, and quinoline-based and benzimidazolone-based pigment derivatives are even more preferable.

The content of the pigment derivative in the pigment dispersion is preferably 1 to 50% by mass, more preferably 3 to 30% by mass, based on the total mass of the pigment. Only one kind of pigment derivative may be used, or two or more kinds may be used in combination.
When a pigment derivative is used in combination, the amount of the pigment derivative used is preferably in the range of 1 to 30 parts in terms of mass with respect to 100 parts by mass of the pigment, and more preferably in the range of 3 to 20 parts. It is preferably in the range of 5 to 15 parts, especially preferably in the range of 5 to 15 parts.
Here, the amount of the pigment means the total amount of the near-infrared transmissive black pigment and a pigment different from this (that is, the pigment as the colorant (B)).

<Organic solvent>
The pigment dispersion liquid preferably contains an organic solvent.
The organic solvent is selected depending on the solubility of each component contained in the pigment dispersion, the coatability when the pigment dispersion is applied to the colored radiation-sensitive composition, and the like. As the organic solvent, esters, ethers, ketones and aromatic hydrocarbons are used. Among them, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, ethyl cellosolve acetate, ethyl lactate, diethylene glycol dimethyl ether, butyl acetate, methyl 3-methoxypropionate, 2-heptanone, cyclohexanone, diethylene glycol monoethyl ether acetate, diethylene glycol mono Butyl ether acetate, propylene glycol methyl ether, and propylene glycol monomethyl ether acetate are preferable, and it is also preferable to use the (F) organic solvent that can be contained in the colored radiosensitive composition described later.

The content of the organic solvent in the pigment dispersion is preferably 50 to 95% by mass, more preferably 70 to 90% by mass.

<Polymer compound>
In addition to the above-mentioned components, the pigment dispersion further contains a polymer compound from the viewpoints of improving dispersion stability and controlling developability when the pigment dispersion is applied to a colored radiation-sensitive composition. May be good.

Examples of the polymer compound include polyamide amine and its salt, polycarboxylic acid and its salt, high molecular weight unsaturated acid ester, modified polyurethane, modified polyester, modified poly (meth) acrylate, and (meth) acrylic copolymer (meth). In particular, a (meth) acrylic acid-based copolymer containing a carboxylic acid group and a polymerizable group in the side chain is preferable), and a naphthalene sulfonate formarin condensate and the like can be mentioned. Since such a polymer material is adsorbed on the surface of the pigment and acts to prevent reaggregation, terminally modified polymers, graft-type polymers, and block-type polymers having an anchor site on the pigment surface are used. Preferably, for example, a graft copolymer containing a monomer containing a heterocycle and a polymerizable oligomer having an ethylenically unsaturated bond as a copolymer unit can be mentioned.
Other polymer materials include polyamideamine phosphates, high molecular weight unsaturated polycarboxylic acids, polyether esters, aromatic sulfonic acid formarin polycondensates, polyoxyethylene nonylphenyl ethers, polyesteramines, and polyoxyethylene sorbitans. Monooleate Polyoxyethylene monostearate and the like can be mentioned.

These polymer materials may be used alone or in combination of two or more.
The content of the polymer material in the pigment dispersion is preferably 20 to 80% by mass, more preferably 30 to 70% by mass, still more preferably 40 to 60% by mass, based on the pigment.

[Preparation of Colored Radiation Composition]
The above-mentioned composition (typically, the composition for an infrared transmission filter containing (A) a near-infrared transmission black color material (for example, a pigment dispersion) and, if necessary, a colorant (B)) is (C) light. Composition for infrared transmission filter containing each component such as a polymerization initiator, (D) a polymerizable compound, and, if necessary, (E) an ultraviolet absorber, (F) an alkali-soluble resin, (G) an organic solvent, and a surfactant. It is a thing.
Here, the composition for an infrared transmission filter containing (A) a near-infrared transmission black color material, (C) a photopolymerization initiator, and (D) a polymerizable compound is a colored radiation-sensitive composition (more preferable). Can be said to be a black radiation-sensitive composition).
This colored radiation-sensitive composition is used for forming the infrared transmission filter of the present invention. For example, a colored cured film obtained by polymerizing and curing the colored radiation-sensitive composition is used as an infrared transmission filter.
Hereinafter, each component that can be further contained in the composition (particularly the colored radiation-sensitive composition) in the present invention will be described in detail.
In the composition of the present invention, the total solid content means the total mass of the components excluding the organic solvent from the total composition of the composition.

As used herein, the "alkyl group" refers to a "linear, branched, and cyclic" alkyl group, which may be substituted or unsubstituted by a substituent.
Further, in the present specification, "(meth) acrylate" represents both acrylate and methacrylate, or either, and "(meth) acrylic" represents both acrylic and methacrylic, or "(meth). ) Acryloyl "represents both acryloyl and / or methacryloyl.

Further, in the present specification, "monomer" and "monomer" are synonymous. The monomer in the present specification is distinguished from an oligomer and a polymer, and refers to a compound having a weight average molecular weight of 2,000 or less. In the present specification, the polymerizable compound means a compound having a polymerizable functional group, and may be a monomer or a polymer. A polymerizable functional group is a group involved in a polymerization reaction.

Further, in the notation of a group (atomic group) in the present specification, the notation that does not describe substitution and non-substitution includes those having no substituent as well as those having a substituent. For example, the "alkyl group" includes not only an alkyl group having no substituent (unsubstituted alkyl group) but also an alkyl group having a substituent (substituted alkyl group).

In the present specification, the term "process" is included in this term not only as an independent process but also as long as the desired action of the process is achieved even if it cannot be clearly distinguished from other processes. ..
In the present invention, "radiation" means those including visible light, ultraviolet rays, far ultraviolet rays, electron beams, X-rays and the like.

<(C) Photopolymerization Initiator>
The composition for an infrared transmission filter (typically, a colored radiation-sensitive composition) of the present invention preferably contains (C) a photopolymerization initiator.
As the photopolymerization initiator (hereinafter, may be simply referred to as “polymerization initiator”) in the present invention, those known as the photopolymerization initiators described below can be used.

The photopolymerization initiator is not particularly limited as long as it has the ability to initiate the polymerization of the polymerizable compound, and can be appropriately selected from known photopolymerization initiators. For example, those having photosensitivity to light rays visible from the ultraviolet region are preferable. Further, it may be an activator that causes some action with a photoexcited sensitizer to generate an active radical, or an initiator that initiates cationic polymerization depending on the type of monomer.
Further, the photopolymerization initiator preferably contains at least one compound having a molecular extinction coefficient of at least about 50 within a wavelength range of about 300 nm to 800 nm (more preferably 330 nm to 500 nm).

Examples of the photopolymerization initiator include halogenated hydrocarbon derivatives (for example, those having a triazine skeleton, those having an oxadiazole skeleton, etc.), acylphosphine compounds such as acylphosphine oxide, hexaarylbiimidazole, and oxime derivatives. Oxime compounds such as, organic peroxides, thio compounds, ketone compounds, aromatic onium salts, ketooxime ethers, aminoacetophenone compounds, hydroxyacetophenone and the like can be mentioned. Of these, oxime compounds are preferred.

Examples of the halogenated hydrocarbon compound having a triazine skeleton include Wakabayashi et al., Bull. Chem. Soc. Japanese Patent No. 42, 2924 (1969), British Patent No. 1388492, Compound described in JP-A-53-133428, German Patent No. 3337024, F.I. C. J. by Schaefer et al. Org. Chem. 29, 1527 (1964), compound described in JP-A-62-58241, compound described in JP-A-5-281728, compound described in JP-A-5-341920, US Pat. No. 4,212,976. Examples thereof include the compounds described in the specification.

Examples of the compound described in US Pat. No. 4,212,976 include compounds having an oxadiazole skeleton (for example, 2-trichloromethyl-5-phenyl-1,3,4-oxadiazole, 2-. Trichloromethyl-5- (4-chlorophenyl) -1,3,4-oxadiazole, 2-trichloromethyl-5- (1-naphthyl) -1,3,4-oxadiazole, 2-trichloromethyl-5 -(2-naphthyl) -1,3,4-oxadiazole, 2-tribromomethyl-5-phenyl-1,3,4-oxadiazole, 2-tribromomethyl-5- (2-naphthyl) -1,3,4-oxadiazole; 2-trichloromethyl-5-styryl-1,3,4-oxadiazole, 2-trichloromethyl-5- (4-chlorostyryl) -1,3,4- Oxadiazole, 2-trichloromethyl-5- (4-methoxystyryl) -1,3,4-oxadiazole, 2-trichloromethyl-5- (1-naphthyl) -1,3,4-oxadiazole , 2-Trichloromethyl-5- (4-n-butoxystylyl) -1,3,4-oxadiazole, 2-tripromomethyl-5-styryl-1,3,4-oxadiazole, etc.) Can be mentioned.

Further, as a polymerization initiator other than the above, polyhalogen compounds such as aclysine derivatives (for example, 9-phenylaclydin, 1,7-bis (9,9'-acrydinyl) heptane, etc.), N-phenylglycine, etc. (for example, four) Carbon bromide, phenyltribromomethylsulfone, phenyltrichloromethylketone, etc.), coumarins (eg, 3- (2-benzofuranoyl) -7-diethylaminocoumarin, 3- (2-benzofuroyl) -7- (1-) Pyrrolidinyl) coumarin, 3-benzoyl-7-diethylaminocoumarin, 3- (2-methoxybenzoyl) -7-diethylaminocoumarin, 3- (4-dimethylaminobenzoyl) -7-diethylaminocoumarin, 3,3'-carbonylbis ( 5,7-Di-n-propoxycoumarin), 3,3'-carbonylbis (7-diethylaminocoumarin), 3-benzoyl-7-methoxycoumarin, 3- (2-floyl) -7-diethylaminocoumarin, 3- (4-Diethylaminocinnamoyle) -7-diethylaminocoumarin, 7-methoxy-3- (3-pyridylcarbonyl) coumarin, 3-benzoyl-5,7-dipropoxycoumarin, 7-benzotriazol-2-ylcoumarin, and also Described in JP-A-5-19475, JP-A-7-271028, JP-A-2002-363206, JP-A-2002-363207, JP-A-2002-363208, JP-A-2002-363209, etc. Coumarin compounds, etc.), acylphosphine oxides (eg, bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide, bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphenylphosphine Oxide, Lucirin TPO, etc.), metallocenes (eg, bis (η5-2,4-cyclopentadiene-1-yl) -bis (2,6-difluoro-3- (1H-pyrrole-1-yl) -phenyl) titanium) , Η5-Cyclopentadienyl-η6-coumarin-iron (1+)-hexafluorophosphate (1-), etc.), JP-A-53-133428, JP-A-57-1819, JP-A-57-6096, etc. , And the compounds described in US Pat. No. 3,615,455.

Examples of the ketone compound include benzophenone, 2-methylbenzophenone, 3-methylbenzophenone, 4-methylbenzophenone, 4-methoxybenzophenone, 2-chlorobenzophenone, 4-chlorobenzophenone, 4-bromobenzophenone, 2-carboxybenzophenone, and the like. 2-ethoxycarbonylbenzophenone, benzophenone tetracarboxylic acid or tetramethyl ester thereof, 4,4'-bis (dialkylamino) benzophenones (eg, 4,4'-bis (dimethylamino) benzophenone, 4,4'-bisdicyclohexyl Amino) benzophenone, 4,4'-bis (diethylamino) benzophenone, 4,4'-bis (dihydroxyethylamino) benzophenone, 4-methoxy-4'-dimethylaminobenzophenone, 4,4'-dimethoxybenzophenone, 4-dimethyl Aminobenzophenone, 4-dimethylaminoacetophenone, benzyl, anthraquinone, 2-t-butylanthraquinone, 2-methylanthraquinone, phenantraquinone, xantone, thioxanthone, 2-chloro-thioxanthone, 2,4-diethylthioxanthone, fluorenone, 2 -Benzyl-dimethylamino-1- (4-morpholinophenyl) -1-butanone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholino-1-propanone, 2-hydroxy-2-methyl- [4- (1-Methylvinyl) phenyl] propanol oligomers, benzophenones, benzoin ethers (eg, benzoin methyl ether, benzoin ethyl ether, benzoin propyl ether, benzoin isopropyl ether, benzophenone ether, benzyl dimethyl ketal), acridone, chloro Examples thereof include acridone, N-methylacridone, N-butylacridone and N-butyl-chloroacridone.

As the polymerization initiator, a hydroxyacetophenone compound, an aminoacetophenone compound, and an acylphosphine compound can also be preferably used. More specifically, for example, the aminoacetophenone-based initiator described in JP-A No. 10-291969 and the acylphosphine oxide-based initiator described in Japanese Patent No. 4225898 can also be used.
As the hydroxyacetophenone-based initiator, IRGACURE-184, DAROCUR-1173, IRGACURE-500, IRGACURE-2959, and IRGACURE-127 (trade names: all manufactured by BASF) can be used. As the aminoacetophenone-based initiator, commercially available products IRGACURE-907, IRGACURE-369, and IRGACURE-379 (trade names: all manufactured by BASF) can be used. As the aminoacetophenone-based initiator, the compound described in JP-A-2009-191179, in which the absorption wavelength is matched with a long-wave light source such as 365 nm or 405 nm, can also be used. Further, as the acylphosphine-based initiator, commercially available products IRGACURE-819 and DAROCUR-TPO (trade names: both manufactured by BASF) can be used.

The polymerization initiator is more preferably an oxime compound.
When the composition contains an oxime compound as a polymerization initiator, the pattern's characteristic dependence on the time from application to exposure (PCD: Post Coating Delay) of the composition (hereinafter, also simply referred to as "PCD dependence"). ) Is good.
As specific examples of the oxime compound, the compound described in JP-A-2001-233842, the compound described in JP-A-2000-80068, and the compound described in JP-A-2006-342166 can be used.

Examples of the oxime compound such as an oxime derivative preferably used as a polymerization initiator in the present invention include 3-benzoyloxyiminobutane-2-one, 3-acetoxyiminovtan-2-one, and 3-propionyloxyiminobutane. -2-one, 2-acetoxyiminopentane-3-one, 2-acetoxyimino-1-phenylpropane-1-one, 2-benzoyloxyimino-1-phenylpropane-1-one, 3- (4-) Toluenesulfonyloxy) iminobutane-2-one, 2-ethoxycarbonyloxyimino-1-phenylpropan-1-one and the like can be mentioned.

Examples of the oxime compound include J. C. S. Perkin II (1979) pp. 1653-1660), J. Mol. C. S. Perkin II (1979) pp.156-162, Journal of Photopolymer Science and Technology (1995) pp. Examples thereof include compounds described in 202-232, JP-A-2000-66385, JP-A-2000-80068, JP-A-2004-534977, and JP-A-2006-342166.
As commercially available products, IRGACURE OXE-01 (manufactured by BASF), IRGACURE OXE-02 (manufactured by BASF), and TR-PBG-304 (manufactured by Changzhou Powerful Electronics New Materials Co., Ltd.) are also preferably used.

Further, as an oxime compound other than the above, a compound described in JP-A-2009-5199004 in which an oxime is linked to the N-position of carbazole, and a compound described in US Pat. No. 7,626,957 in which a heterosubstituted group is introduced at a benzophenone moiety. The compounds described in JP-A-2010-15025 and US Patent Publication No. 2009-292039 in which a nitro group is introduced into the dye moiety, the keto-oxime compounds described in International Publication Patent No. 2009-131189, and the triazine skeleton and the oxime skeleton are the same. A compound described in US Pat. No. 7,556,910, which is contained in the molecule, and a compound described in JP-A-2009-221114, which has an absorption maximum at 405 nm and has good sensitivity to a g-ray light source, may be used.

Preferably, it can also be preferably used for the cyclic oxime compounds described in JP-A-2007-231000 and JP-A-2007-322744. Among the cyclic oxime compounds, the cyclic oxime compound fused to the carbazole dye described in JP-A-2010-32985 and JP-A-2010-185072 has high light absorption and has high sensitivity. preferable.
Further, the compound described in JP-A-2009-242469, which has an unsaturated bond at a specific site of the oxime compound, can also be suitably used because it can achieve high sensitivity by regenerating the active radical from the polymerization inactive radical. it can.

Most preferably, an oxime compound having a specific substituent shown in JP-A-2007-269779 and an oxime compound having a thioaryl group shown in JP-A-2009-191061 can be mentioned.
Specifically, as the oxime compound, a compound represented by the following general formula (OX-1) is preferable. The NO bond of the oxime may be an (E) -form oxime compound, a (Z) -form oxime compound, or a mixture of the (E) -form and the (Z) -form. ..

In the general formula (OX-1), R and B each independently represent a monovalent substituent, A represents a divalent organic group, and Ar represents an aryl group.
In the general formula (OX-1), the monovalent substituent represented by R is preferably a monovalent non-metal atomic group.
Examples of the monovalent non-metal atomic group include an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a heterocyclic group, an alkylthiocarbonyl group, an arylthiocarbonyl group and the like. Moreover, these groups may have one or more substituents. Moreover, the above-mentioned substituent may be further substituted with another substituent.
Examples of the substituent include a halogen atom, an aryloxy group, an alkoxycarbonyl group or an aryloxycarbonyl group, an acyloxy group, an acyl group, an alkyl group, an aryl group and the like.

As the alkyl group which may have a substituent, an alkyl group having 1 to 30 carbon atoms is preferable. Specifically, the description of paragraph 0026 of JP2012-032556 and the like can be referred to, and these contents are incorporated in the present specification.

As the aryl group which may have a substituent, an aryl group having 6 to 30 carbon atoms is preferable. Aryl groups having 6 to 30 carbon atoms are preferable. Specifically, the description of paragraph 0027 of JP2012-032556A can be referred to, and these contents are incorporated in the present specification.

As the acyl group which may have a substituent, an acyl group having 2 to 20 carbon atoms is preferable. Specifically, the description of paragraph 0028 of JP2012-032556A can be referred to, and these contents are incorporated in the present specification.

As the alkoxycarbonyl group which may have a substituent, an alkoxycarbonyl group having 2 to 20 carbon atoms is preferable. Specifically, the description of paragraph 0030 of Japanese Patent Application Laid-Open No. 2012-032556 and the like can be referred to, and these contents are incorporated in the present specification.

Specifically, as the aryloxycarbonyl group which may have a substituent, the description of paragraph 0030 of JP2012-032556 and the like can be referred to, and these contents are incorporated in the present specification.

As the heterocyclic group which may have a substituent, an aromatic or aliphatic heterocycle containing a nitrogen atom, an oxygen atom, a sulfur atom or a phosphorus atom is preferable.
Specifically, the description of paragraph 0031 of JP2012-032556 and the like can be referred to, and these contents are incorporated in the present specification.

Specifically, as the alkylthiocarbonyl group which may have a substituent, the description in paragraph 0032 of JP2012-032556A can be referred to, and these contents are incorporated in the present specification.

Specifically, as the arylthiocarbonyl group which may have a substituent, the description in paragraph 0033 of JP2012-032556 and the like can be referred to, and these contents are incorporated in the present specification.

In the general formula (OX-1), the monovalent substituent represented by B represents an aryl group, a heterocyclic group, an arylcarbonyl group, or a heterocyclic carbonyl group. Further, these groups may have one or more substituents. Examples of the substituent include the above-mentioned substituents. Moreover, the above-mentioned substituent may be further substituted with another substituent.

Among them, the structure shown below is particularly preferable.
In the structure below, Y, X, and n have the same meaning as Y, X, and n in the general formula (OX-2) described later, and the same applies to preferred examples.

In the general formula (OX-1), examples of the divalent organic group represented by A include an alkylene group having 1 to 12 carbon atoms, a cycloalkylene group, and an alkynylene group. Further, these groups may have one or more substituents. Examples of the substituent include the above-mentioned substituents. Moreover, the above-mentioned substituent may be further substituted with another substituent.
Among them, A in the formula (OX-1) has an unsubstituted alkylene group and an alkyl group (for example, a methyl group, an ethyl group, a tert-butyl group and a dodecyl) from the viewpoint of increasing the sensitivity and suppressing the coloring due to heating. Group) substituted alkylene group, alkenyl group (eg vinyl group, allyl group) substituted alkylene group, aryl group (eg phenyl group, p-tolyl group, xsilyl group, cumenyl group, naphthyl group, anthryl) An alkylene group substituted with a group (group, phenanthryl group, styryl group) is preferable.

In the general formula (OX-1), the aryl group represented by Ar is preferably an aryl group having 6 to 30 carbon atoms, and may have a substituent. Examples of the substituent include the same substituents introduced into the substituted aryl group mentioned above as a specific example of the aryl group which may have a substituent.
Of these, a substituted or unsubstituted phenyl group is preferable from the viewpoint of increasing the sensitivity and suppressing coloring with time of heating.

In the formula (OX-1), the structure of "SAr" formed by the Ar and the adjacent S is preferably the structure described in paragraph 0040 of Japanese Patent Application Laid-Open No. 2012-032556. These contents are incorporated in the present specification.

The oxime compound is preferably a compound represented by the following general formula (OX-2).

(In the general formula (OX-2), R and X each independently represent a monovalent substituent, A and Y each independently represent a divalent organic group, Ar represents an aryl group, and n is 0. It is an integer of ~ 5.
R, A, and Ar in the general formula (OX-2) are synonymous with R, A, and Ar in the general formula (OX-1), and the same applies to preferred examples.

In the general formula (OX-2), the monovalent substituent represented by X includes an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an acyloxy group, an acyl group, an alkoxycarbonyl group, an amino group and a heterocycle. Examples include groups and halogen atoms. Further, these groups may have one or more substituents. Examples of the substituent include the above-mentioned substituents. Moreover, the above-mentioned substituent may be further substituted with another substituent.

Among these, as X in the general formula (OX-2), an alkyl group is preferable from the viewpoint of solvent solubility and improvement of absorption efficiency in a long wavelength region.
Further, n in the general formula (OX-2) represents an integer of 0 to 5, and an integer of 0 to 2 is preferable.

In the general formula (OX-2), examples of the divalent organic group represented by Y include the following structures. In the groups shown below, "*" indicates the bond position between Y and an adjacent carbon atom in the general formula (OX-2).

As the photopolymerization initiator, those having the following structure are preferable from the viewpoint of increasing the sensitivity.

Further, the oxime compound is preferably a compound represented by the following general formula (OX-3).

In the general formula (OX-3), R and X each independently represent a monovalent substituent, A represents a divalent organic group, Ar represents an aryl group, and n is an integer of 0 to 5. ..
R, X, A, Ar, and n in the general formula (OX-3) are synonymous with R, X, A, Ar, and n in the general formula (OX-2), respectively, and the preferred examples are also the same. Is.

Hereinafter, specific examples of preferably used oxime compounds are shown below, but the present invention is not limited thereto.

The oxime compound has a maximum absorption wavelength in the wavelength region of 350 nm to 500 nm, preferably has an absorption wavelength in the wavelength region of 360 nm to 480 nm, and particularly preferably has a high absorbance at 365 nm and 455 nm.

The molar extinction coefficient of the oxime compound at 365 nm or 405 nm is preferably 1,000 to 300,000, more preferably 2,000 to 300,000 from the viewpoint of sensitivity, and is 5,000 to 200. It is particularly preferably 000.
A known method can be used for the molar extinction coefficient of the compound. Specifically, for example, 0.01 g of an ethyl acetate solvent is used on an ultraviolet-visible spectrophotometer (Varian Carry-5 spctrophotometer). It is preferable to measure at a concentration of / L.

The photopolymerization initiator used in the present invention may be used in combination of two or more, if necessary.
The content of the photopolymerization initiator in the composition for an infrared transmission filter (total content in the case of two or more types) is preferably in the range of 0.1 to 20% by mass with respect to the total solid content of the composition. , More preferably in the range of 0.5 to 10% by mass, and particularly preferably in the range of 1 to 8% by mass. Within this range, good sensitivity and pattern formation can be obtained.

The composition for an infrared transmission filter may contain a sensitizer for the purpose of improving the radical generation efficiency of the photopolymerization initiator and lengthening the photosensitive wavelength. As the sensitizer that can be used in the present invention, it is preferable that the photopolymerization initiator (C) described above is sensitized by an electron transfer mechanism or an energy transfer mechanism.

Examples of the sensitizer used in the composition for an infrared transmission filter include the compounds described in paragraphs [0101] to [0154] of JP-A-2008-32803.
The content of the sensitizer in the composition is preferably 0.1% by mass to 20% by mass, preferably 0.5% by mass, in terms of solid content, from the viewpoint of light absorption efficiency to a deep part and initial decomposition efficiency. % To 15% by mass is more preferable.
The sensitizer may be used alone or in combination of two or more.

<(D) Polymerizable compound>
The composition for an infrared transmission filter (typically, a colored radiation-sensitive composition) of the present invention preferably contains (D) a polymerizable compound.
The polymerizable compound is specifically selected from compounds having at least one terminal ethylenically unsaturated bond, preferably two or more. Among them, a polyfunctional polymerizable compound having four or more functionalities is preferable, and a polyfunctional polymerizable compound having five or more functionalities is more preferable.
Such a group of compounds is widely known in the industrial field, and these can be used without particular limitation in the present invention. These may be in any of chemical forms such as, for example, monomers, prepolymers, ie dimers, trimers and oligomers, or mixtures thereof and multimers thereof. The polymerizable compound in the present invention may be used alone or in combination of two or more.

More specifically, examples of the monomer and its prepolymer include unsaturated carboxylic acids (eg, acrylic acid, methacrylic acid, itaconic acid, crotonic acid, isocrotonic acid, maleic acid, etc.) and their esters, amides, etc. And these multimers, preferably esters of unsaturated carboxylic acids and aliphatic polyvalent alcohol compounds, amides of unsaturated carboxylic acids and aliphatic polyvalent amine compounds, and multimers thereof. is there. Further, an addition reaction product of an unsaturated carboxylic acid ester or amide having a nucleophilic substituent such as a hydroxyl group, an amino group or a mercapto group with a monofunctional or polyfunctional isocyanate or an epoxy, or a monofunctional or polyfunctional group. A dehydration condensation reaction product with a functional carboxylic acid is also preferably used. Further, an addition reaction product of an unsaturated carboxylic acid ester or amide having a parentionic substituent such as an isocyanate group or an epoxy group with a monofunctional or polyfunctional alcohol, amines or thiols, and a halogen group. Substitution reactions of unsaturated carboxylic acid esters or amides having a releasable substituent such as tosyloxy group and monofunctional or polyfunctional alcohols, amines and thiols are also suitable. Further, as another example, it is also possible to use a compound group in which the unsaturated carboxylic acid is replaced with an unsaturated phosphonic acid, a vinylbenzene derivative such as styrene, a vinyl ether, an allyl ether or the like.
As these specific compounds, the compounds described in paragraph numbers [0905] to [0108] of JP2009-288705A can be preferably used in the present invention.

Further, as the polymerizable compound, a compound having an ethylenically unsaturated group having a boiling point of 100 ° C. or higher under normal pressure, which has at least one addition-polymerizable ethylene group, is also preferable. Examples thereof include monofunctional acrylates and methacrylates such as polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, and phenoxyethyl (meth) acrylate; polyethylene glycol di (meth) acrylate, trimethyl ethanetri. (Meta) acrylate, neopentyl glycol di (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, hexanediol After adding ethylene oxide or propylene oxide to polyfunctional alcohols such as (meth) acrylate, trimethylolpropane tri (acryloyloxypropyl) ether, tri (acryloyloxyethyl) isocyanurate, glycerin and trimethylolethane (meth). Acrylate, Urethane (meth) acrylates as described in JP-A-48-41708, JP-A-50-6034, JP-A-51-37193, JP-A-48-64183, Polyfunctional acrylates and metas such as polyester acrylates described in Japanese Patent Publication No. 49-43191 and Japanese Patent Publication No. 52-30490, and epoxy acrylates which are reaction products of epoxy resin and (meth) acrylic acid. Acrylate and mixtures thereof can be mentioned.
Examples thereof include polyfunctional (meth) acrylate obtained by reacting a polyfunctional carboxylic acid with a compound having a cyclic ether group such as glycidyl (meth) acrylate and an ethylenically unsaturated group.
Further, as a preferable polymerizable compound, which is described in JP-A-2010-160418, JP-A-2010-129825, Patent No. 4364216 and the like, it has a fluorene ring and has a bifunctional or higher ethylenically unsaturated group. It is also possible to use a compound and a cardo resin.

Examples of the compound having a boiling point of 100 ° C. or higher under normal pressure and having at least one addition-polymerizable ethylenically unsaturated group include paragraph numbers [0254] to [0257] of JP-A-2008-292970. The compounds described in 1 are also suitable.

In addition to the above, radically polymerizable monomers represented by the following general formulas (MO-1) to (MO-5) can also be preferably used. In the formula, when T is an oxyalkylene group, the end on the carbon atom side is bonded to R.

In the above general formula, n is 0 to 14 and m is 1 to 8. A plurality of R and T existing in one molecule may be the same or different.
In each of the polymerizable compounds represented by the general formulas (MO-1) to (MO-5), at least one of the plurality of Rs present is -OC (= O) CH = CH ₂ or -OC. (= O) C (CH ₃ ) = represents a group represented by CH ₂ .
Specific examples of the polymerizable compounds represented by the general formulas (MO-1) to (MO-5) include the compounds described in paragraphs 0248 to 0251 of JP-A-2007-269779. It can also be suitably used in the present invention.

Further, a compound obtained by adding ethylene oxide or propylene oxide to the polyfunctional alcohol described as the general formulas (1) and (2) together with specific examples in JP-A-10-62986 and then (meth) acrylated is also used. It can be used as a polymerizable compound.

Among them, as polymerizable compounds, dipentaerythritol triacrylate (commercially available KAYARAD D-330; manufactured by Nippon Kayaku Co., Ltd.) and dipentaerythritol tetraacrylate (commercially available KAYARAD D-320; Nippon Kayaku Co., Ltd.) Dipentaerythritol penta (meth) acrylate (commercially available KAYARAD D-310; manufactured by Nippon Kayaku Co., Ltd.), dipentaerythritol hexa (meth) acrylate (commercially available KAYARAD DPHA; Nippon Kayaku Co., Ltd.) , And the structure in which these (meth) acryloyl groups are mediated by ethylene glycol and propylene glycol residues is preferable.
As polymerizable compounds, 2- (meth) acryloyloxyethyl caproate acid phosphate (PM-20 manufactured by Nippon Kayaku Co., Ltd. as a commercial product) and urethane acrylate (new Nakamura Chemical Co., Ltd. as a commercial product) U-6LPA) manufactured by U-6LPA) and the like are also preferably mentioned.
These oligomer types can also be used. The preferred embodiments of the polymerizable compound are shown below.

The polymerizable compound may be a polyfunctional monomer and may have an acid group such as a carboxyl group, a sulfonic acid group, or a phosphoric acid group. If the ethylenic compound has an unreacted carboxyl group as in the case of a mixture as described above, it can be used as it is, but if necessary, it can be used as the hydroxyl group of the above-mentioned ethylenic compound. A non-aromatic carboxylic acid anhydride may be reacted to introduce an acid group. In this case, specific examples of the non-aromatic carboxylic acid anhydride used include tetrahydrophthalic anhydride, alkylated tetrahydrophthalic anhydride, hexahydrophthalic anhydride, alkylated hexahydrophthalic anhydride, succinic anhydride, and anhydrous. Maleic anhydride can be mentioned.

In the present invention, the monomer having an acid group is an ester of an aliphatic polyhydroxy compound and an unsaturated carboxylic acid, and a non-aromatic carboxylic acid anhydride is reacted with an unreacted hydroxyl group of the aliphatic polyhydroxy compound. A polyfunctional monomer having an acid group is preferable.
Particularly preferably, in this ester, the aliphatic polyhydroxy compound is pentaerythritol and / or dipentaerythritol. Examples of commercially available products include M-510 and M-520 as polybasic acid-modified acrylic oligomers manufactured by Toagosei Co., Ltd.

One of these polymerizable compounds may be used alone in the composition for an infrared transmission filter in the present invention, but since it is difficult to obtain a single compound in the production of the polymerizable compound, two types are used. The above may be mixed and used.
Further, if necessary, a polyfunctional monomer having no acid group and a polyfunctional monomer having an acid group may be used in combination as the polymerizable compound.
The acid value of the polyfunctional monomer having an acid group is preferably 0.1 to 40 mg-KOH / g, and particularly preferably 5 to 30 mg-KOH / g. If the acid value of the polyfunctional monomer is too low, the developing and dissolving characteristics deteriorate, and if it is too high, the production and handling become difficult, the photopolymerization performance deteriorates, and the curability such as the surface smoothness of the pixel becomes inferior. Therefore, when two or more polyfunctional monomers having different acid groups are used in combination, or when a polyfunctional monomer having no acid group is used in combination, the acid groups as the entire polyfunctional monomer should be adjusted so as to fall within the above range. Is preferable.

It is also a preferred embodiment to contain a polyfunctional monomer having a caprolactone structure as the polymerizable compound.
The polymerizable compound having a caprolactone structure is not particularly limited as long as it has a caprolactone structure in its molecule, but for example, trimethylolethane, ditrimethylolethane, trimethylolpropane, dimethylolpropane, pentaerythritol, di Ε-Caprolactone-modified polyfunctional (meth) acrylate obtained by esterifying polyvalent alcohols such as pentaerythritol, tripentaerythritol, glycerin, diglycerol, and trimethylolmelamine with (meth) acrylic acid and ε-caprolactone. Can be mentioned. Of these, a polyfunctional monomer having a caprolactone structure represented by the following general formula (Z-1) is preferable.

In the general formula (Z-1), all 6 Rs are groups represented by the following general formula (Z-2), or 1 to 5 of the 6 Rs are the following general formulas (Z). It is a group represented by -2), and the remainder is a group represented by the following general formula (Z-3).

In the general formula (Z-2), R ¹ represents a hydrogen atom or a methyl group, m represents 1 or 2, and "*" indicates a bond.

In the general formula (Z-3), R ¹ indicates a hydrogen atom or a methyl group, and "*" indicates a bond. )

A polyfunctional monomer having such a caprolactone structure is commercially available, for example, from Nippon Kayaku Co., Ltd. as the KAYARAD DPCA series, and DPCA-20 (m = 1 in the above formulas (1) to (3)). , Number of groups represented by formula (2) = 2, compound in which R ¹ is all hydrogen atoms), DPCA-30 (same formula, m = 1, number of groups represented by formula (2) = 3 , R ¹ is all hydrogen atoms), DPCA-60 (same formula, m = 1, number of groups represented by formula (2) = 6, R ¹ is all hydrogen atoms), DPCA- Examples thereof include 120 (m = 2 in the same formula, the number of groups represented by the formula (2) = 6, and a compound in which R ¹ is all a hydrogen atom).
In the present invention, the polyfunctional monomer having a caprolactone structure can be used alone or in combination of two or more.

As the polymerizable compound in the present invention, a polymerizable compound containing an alkyleneoxy group having 2 or more carbon atoms (ethyleneoxy group, propyleneoxy group, butyleneoxy group, etc.) is preferable.
Among the polymerizable compounds containing an alkyleneoxy group having 2 or more carbon atoms, at least one selected from the group of compounds represented by the following general formula (i) or (ii) is particularly preferable.

In the general formulas (i) and (ii), E independently represents − ((CH ₂ ) _y CH ₂ O) − or − ((CH ₂ ) _y CH (CH ₃ ) O) −. y independently represents an integer of 0 to 10, and X independently represents an acryloyl group, a methacryloyl group, a hydrogen atom, or a carboxyl group.
In the general formula (i), the total number of acryloyl groups and methacryloyl groups represented by X is 3 or 4, each of m independently represents an integer of 0 to 10, and the total of each m is 0 to 40. It is an integer. However, when the total of each m is 0, any one of X is a carboxyl group.
In the general formula (ii), the total number of acryloyl groups and methacryloyl groups represented by X is 5 or 6, each of n independently represents an integer of 0 to 10, and the total of each n is 0 to 60. It is an integer. However, when the sum of each n is 0, any one of X is a carboxyl group.

In the general formula (i), m is preferably an integer of 0 to 6, and more preferably an integer of 0 to 4. The total of each m is preferably an integer of 2 to 40, more preferably an integer of 2 to 16, and particularly preferably an integer of 4 to 8.
In the general formula (ii), n is preferably an integer of 0 to 6, and more preferably an integer of 0 to 4. Further, the total of each n is preferably an integer of 3 to 60, more preferably an integer of 3 to 24, and particularly preferably an integer of 6 to 12.
Further, − ((CH ₂ ) _y CH ₂ O) − or − ((CH ₂ ) _y CH (CH ₃ ) O) − in the general formula (i) or the general formula (ii) is the terminal on the oxygen atom side. Is preferably in the form of binding to X.

The compound represented by the general formula (i) or (ii) may be used alone or in combination of two or more. In particular, in the general formula (ii), it is preferable that all six Xs are acryloyl groups.

The compound represented by the general formula (i) or (ii) has a ring-opening skeleton obtained by ring-opening addition reaction of ethylene oxide or propylene oxide to pentaerythritol or dipentaerythritol, which is a conventionally known step. It can be synthesized from a step of binding and a step of reacting, for example, (meth) acryloyl chloride with the terminal hydroxyl group of the ring-opening skeleton to introduce a (meth) acryloyl group. Each step is a well-known step, and those skilled in the art can easily synthesize a compound represented by the general formula (i) or (ii).

Among the compounds represented by the general formulas (i) and (ii), pentaerythritol derivatives and / or dipentaerythritol derivatives are more preferable.
Specific examples thereof include compounds represented by the following formulas (a) to (f) (hereinafter, also referred to as “exemplified compounds (a) to (f)”), and among them, exemplary compounds (a) and ( b), (e) and (f) are preferable.

In particular, as the polymerizable compound, the exemplary compound (b) is effective, and the effect of the present invention can be remarkably improved.

Commercially available products of the polymerizable compounds represented by the general formulas (i) and (ii) include SR-494, which is a tetrafunctional acrylate having four ethyleneoxy chains manufactured by Sartmer, and Nippon Kayaku Co., Ltd. Examples thereof include DPCA-60, which is a hexafunctional acrylate having six pentyleneoxy chains, and TPA-330, which is a trifunctional acrylate having three isobutyleneoxy chains.

Further, as a polymerizable compound, the journal Vol. 20, No. Those introduced as photocurable monomers and oligomers in 7 (pages 300 to 308) can also be used.

The content of the polymerizable compound in the composition for an infrared transmission filter is preferably 2 to 50% by mass, more preferably 2 to 30% by mass, and further 2 to 25% by mass with respect to the total solid content of the composition. More preferably by mass.

<(E) UV absorber>
Further, the composition for an infrared transmission filter (typically, a colored radiation-sensitive composition) of the present invention preferably contains (E) an ultraviolet absorber.
The ultraviolet absorber is a compound having an extinction coefficient per gram of more than 100 at a wavelength of 365 nm and an extinction coefficient of 10 or less per gram at a wavelength of 400 nm or more. The extinction coefficient is a value measured at a concentration of 0.01 g / L using an ethyl acetate solvent with an ultraviolet-visible spectrophotometer (Carry-5 spectrophotometer manufactured by Varian).

When the absorption coefficient per gram at a wavelength of 365 nm is 100 or less, the amount added to obtain the ultraviolet absorption effect increases and the formulation likelihood decreases. When the absorption coefficient per gram at a wavelength of 400 nm or more exceeds 10, it is visible. It is not preferable because it affects the device spectroscopy of the region.

As the ultraviolet absorber in the present invention, a compound represented by the following general formula (I), which is a conjugated diene compound, is preferable. When this conjugated diene compound is used, the subsequent fluctuation in development performance is suppressed especially when low-illuminance exposure is performed, and the exposure illuminance dependence related to the pattern formability such as the line width, film thickness, and spectral spectrum of the pattern can be reduced. It can be suppressed more effectively.

In the general formula (I), R ¹ and R ² independently represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms, and R ¹ and R ^{2 respectively.} May be the same as or different from each other, but they do not represent hydrogen atoms at the same time.

The alkyl group represented by R ¹ and R ² may have a substituent, and examples of the substituent of the alkyl group having a substituent include an alkyl group, an aryl group, an alkoxy group and an aryloxy group. Acyloxy group, halogen atom, acylamino group, acyl group, alkylthio group, arylthio group, hydroxy group, cyano group, alkyloxycarbonyl group, aryloxycarbonyl group, substituted carbamoyl group, substituted sulfamoyl group, nitro group, substituted amino group, alkyl Examples thereof include a sulfonyl group and an arylsulfonyl group.

The aryl group having 6 to 20 carbon atoms represented by R ¹ and R ² may be a monocyclic ring or a condensed ring, and may be a substituted aryl group having a substituent or an unsubstituted aryl group. There may be.

Further, R ¹ and R ² may form a cyclic amino group together with a nitrogen atom. Examples of the cyclic amino group include a piperidino group, a morpholino group, a pyrrolidino group, a hexahydroazepino group, a piperazino group and the like.

Of the above, R ¹ and R ² are lower alkyl groups having 1 to 8 carbon atoms (for example, methyl, ethyl, isopropyl, butyl, sec-butyl, tert-butyl, pentyl, tert-pentyl, hexyl, octyl). , 2-Ethylhexyl, tert-octyl, etc.), or substituted or unsubstituted phenyl groups (eg, trill group, phenyl group, anisyl group, mesityl group, chlorophenyl group, 2,4-di t-amylphenyl group, etc.) preferable. It is also preferable that R ¹ and R ² are bonded to form a ring (for example, a piperidine ring, a pyrrolidine ring, a morpholine ring, etc.) containing a nitrogen atom represented by N in the formula.

In the general formula (I), R ³ and R ⁴ represent an electron-withdrawing group. Here, the electron-withdrawing group is an electron-withdrawing group having a Hammett substituent constant σ _p value (hereinafter, simply referred to as “σ _p value”) of 0.20 or more and 1.0 or less. Preferably, it is an electron-withdrawing group having a σ _p value of 0.30 or more and 0.8 or less.
Hammett's law, in 1935, to quantitatively discuss the effect of substituents on the reaction or equilibrium of benzene derivatives. P. A rule of thumb proposed by Hammett, which is widely accepted today. The substituent constants obtained by Hammett's law include σ _p value and σ _m value, and these values are described in many general books, for example, J. et al. A. Dean ed., "Langer's Handbook of Chemistry", 12th edition, 1979 (McGraw-Hill) and "Chemical Area Special Edition", No. 122, pp. 96-103, 1979 (Nankodo), Chemical Reviews, Vol. 91, See pages 165 to 195, 1991. The present invention does not mean that the values known in the literature described in these books are limited to certain substituents, and even if the values are unknown in the literature, they are within the range when measured based on Hammett's law. Of course, it is included as long as it is included in.

Specific examples of the electron-withdrawing group having a σ _p value of 0.20 or more and 1.0 or less include an acyl group, an acyloxy group, a carbamoyl group, an alkyloxycarbonyl group, an aryloxycarbonyl group, a cyano group, and a nitro group. Dialkylphosphono group, diarylphosphono group, diarylphosphinyl group, alkylsulfinyl group, arylsulfinyl group, alkylsulfonyl group, arylsulfonyl group, sulfonyloxy group, acylthio group, sulfamoyl group, thiocyanate group, thiocarbonyl group, at least An alkyl group substituted with two or more halogen atoms, an alkoxy group substituted with at least two or more halogen atoms, an aryloxy group substituted with at least two or more halogen atoms, with at least two or more halogen atoms. Substituted alkylamino groups, alkylthio groups substituted with at least two or more halogen atoms, aryl groups substituted with other electron-withdrawing groups with a σ _p value of 0.20 or more, heterocyclic groups, chlorine atoms, bromine. Examples include atomic, azo groups, or selenocyanate groups. Among these substituents, the group capable of further having a substituent may further have a substituent as described above.

Of the above, in the present invention, R ³ is preferably a group selected from a cyano group, -COOR ⁵ , -CONHR ⁵ , -COR ⁵ , and -SO ₂ R ⁵ , and R ⁴ is cyano. Groups selected from -COOR ⁶ , -CONHR ⁶ , -COR ⁶ , and -SO ₂ R ⁶ are preferred. R ⁵ and R ⁶ each independently represent an alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 20 carbon atoms. The alkyl group having 1 to 20 carbon atoms and the aryl group having 6 to 20 carbon atoms represented by R ⁵ and R ^{6 have the same} meanings as those in R ¹ and R ² , and the preferred embodiment is also the same.
Of these, R ^3, R ^4, an acyl group, a carbamoyl group, an alkyloxycarbonyl group, an aryloxycarbonyl group, a cyano group, a nitro group, an alkylsulfonyl group, an arylsulfonyl group, a sulfonyloxy group, a sulfamoyl group preferably In particular, an acyl group, a carbamoyl group, an alkyloxycarbonyl group, an aryloxycarbonyl group, a cyano group, an alkylsulfonyl group, an arylsulfonyl group, a sulfonyloxy group and a sulfamoyl group are preferable.
Further, R ³ and R ⁴ may be combined with each other to form a ring.

Further, at least one of the above R ¹ , R ² , R ³ and R ⁴ may be in the form of a polymer derived from a monomer bonded to a vinyl group via a linking group. Further, it may be a copolymer with another monomer.
In the case of the copolymer, examples of the other monomer include, for example, acrylic acid, α-chloroacrylic acid, and α-alacrylic acid (for example, an ester derived from acrylic acids such as methacrylic acid, preferably a lower alkyl ester. And amides (eg, acrylamide, metaacrylamide, t-butylacrylamide, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, n-hexyl. Acrylate, octyl methacrylate, and lauryl methacrylate, methylenebisacrylamide, etc.)), vinyl esters (eg, vinyl acetate, vinyl propionate, vinyl laurate, etc.), acrylonitril, metaacrylonitril, aromatic vinyl compounds (eg, vinyl acetate, vinyl propionate, vinyl laurate, etc.) For example, styrene and its derivatives such as vinyl toluene, divinyl benzene, vinyl acetophenone, sulfostyrene, and styrene sulfinic acid), itaconic acid, citraconic acid, crotonic acid, vinylidene chloride, vinyl alkyl ether (for example, vinyl ethyl ether, etc.). , Maleic acid ester, N-vinyl-2-pyrrolidone, N-vinylpyridine, 2- and 4-vinylpyridine and the like.
Of these, acrylic acid esters, methacrylic acid esters, and aromatic vinyl compounds are particularly preferable.
Two or more comonomer compounds can also be used together. For example, n-butyl acrylate and divinylbenzene, styrene and methyl methacrylate, methyl acrylate and methacrylate acid and the like can be used.

Hereinafter, preferred specific examples of the compound represented by the general formula (I) [exemplified compounds (1) to (14)] are shown. However, the present invention is not limited to these.

The compounds represented by the general formula (I) are JP-A-44-29620, JP-A-53-128333, JP-A-61-169831, JP-A-63-53543, JP-A. It can be synthesized by the method described in Japanese Patent Application Laid-Open No. 63-53544 and Japanese Patent Application Laid-Open No. 63-56651.

In the present invention, the various ultraviolet absorbers may be used alone or in combination of two or more.
The composition for an infrared transmission filter may or may not contain an ultraviolet absorber, but when it is contained, the content of the ultraviolet absorber is, in terms of mass, relative to the total solid mass of the composition of the present invention. It is preferably 0.01% or more and 10% or less, and more preferably 0.01% or more and 5% or less.
If the content of the ultraviolet absorber is less than this range, the roughness of the side wall in the coloring pattern is deteriorated, and a fine pattern shape (particularly a rectangle) cannot be formed finely. If the content exceeds this range, the sensitivity Decreases.

The ratio (E / C) of the (E) ultraviolet absorber to the (C) photopolymerization initiator is 0.25 to 1.25 on a mass basis. If the ratio E / C is less than 0.25, the roughness of the side wall in the coloring pattern is deteriorated, and a fine pattern shape (particularly a rectangle) cannot be formed finely. If the ratio exceeds 1.25, Sensitivity decreases. Among them, the ratio E / C is preferably in the range of 0.3 to 1.1, and more preferably in the range of 0.4 to 1.0 for the same reason as described above.

Furthermore, the composition of the present invention can contain components such as (F) alkali-soluble resin, organic solvent, and surfactant.

<(F) Alkali-soluble resin>
It is also preferable that the composition for an infrared transmission filter of the present invention (typically, a colored radiation-sensitive composition) further contains (F) an alkali-soluble resin. By containing an alkali-soluble resin, developability and pattern formation are improved.
The alkali-soluble resin may be a linear organic polymer polymer, and at least one alkali-soluble resin is contained in the molecule (preferably a molecule having an acrylic copolymer or a styrene copolymer as a main chain). It can be appropriately selected from the alkali-soluble resins having a promoting group.

The alkali-soluble resin will be described.
As the alkali-soluble resin, a polyhydroxystyrene resin, a polysiloxane resin, an acrylic resin, an acrylamide resin, and an acrylic / acrylamide copolymer resin are preferable from the viewpoint of heat resistance, and from the viewpoint of developability control, the alkali-soluble resin is preferable. Acrylic resin, acrylamide resin, and acrylic / acrylamide copolymer resin are preferable.
Examples of the group that promotes alkali solubility (hereinafter, also referred to as an acid group) include a carboxyl group, a phosphoric acid group, a sulfonic acid group, and a phenolic hydroxyl group, which are soluble in an organic solvent and developed with a weak alkaline aqueous solution. Possible ones are preferred, and (meth) acrylic acids are particularly preferred. These acid groups may be only one type or two or more types.
Examples of the monomer capable of imparting an acid group after the polymerization include a monomer having a hydroxyl group such as 2-hydroxyethyl (meth) acrylate, a monomer having an epoxy group such as glycidyl (meth) acrylate, and 2-isocyanate ethyl (meth). ) Monomers having an isocyanate group such as acrylate can be mentioned. The monomer for introducing these acid groups may be only one kind or two or more kinds. In order to introduce an acid group into an alkali-soluble binder, for example, a monomer having an acid group and / or a monomer capable of imparting an acid group after polymerization (hereinafter, may be referred to as "monomer for introducing an acid group"". ) May be polymerized as a monomer component. When an acid group is introduced using a monomer capable of imparting an acid group after polymerization as a monomer component, a treatment for imparting an acid group, for example, as described later, is required after polymerization.

For the production of the alkali-soluble resin, for example, a known radical polymerization method can be applied. Polymerization conditions such as temperature, pressure, type and amount of radical initiator, type of solvent, etc. when producing an alkali-soluble resin by a radical polymerization method can be easily set by those skilled in the art, and the conditions are experimentally determined. You can also do it.

As the alkali-soluble resin, a polymer having a carboxylic acid in the side chain is preferable, and as such a polymer, the description in paragraph 0253 of JP2012-162648, etc. can be referred to, and these contents are incorporated in the present specification. ..

The alkali-soluble resin preferably contains a resin (a) having a repeating unit derived from a compound represented by the following general formula (ED) (hereinafter, also appropriately referred to as “ether dimer”).
By using the resin (a), the composition in the present invention can have a good PCD dependence.

In the general formula (ED), R ¹ and R ² each independently represent a hydrogen atom or a hydrocarbon group.

In the general formula (ED), the hydrocarbon groups represented by R ¹ and R ² are preferably hydrocarbon groups having 1 to 25 carbon atoms.
Moreover, the above-mentioned hydrocarbon group may have a substituent.
The above-mentioned hydrocarbon group is not particularly limited, but is, for example, a linear chain such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, t-amyl, stearyl, lauryl, 2-ethylhexyl and the like. State or branched alkyl group; aryl group such as phenyl; alicyclic group such as cyclohexyl, t-butylcyclohexyl, dicyclopentadienyl, tricyclodecanyl, isobornyl, adamantyl, 2-methyl-2-adamantyl; Examples thereof include an alkyl group substituted with an alkoxy such as 1-methoxyethyl and 1-ethoxyethyl; an alkyl group substituted with an aryl group such as benzyl; and the like. Among these, a substituent of a primary or secondary carbon such as methyl, ethyl, cyclohexyl, benzyl and the like, which is difficult to be eliminated by acid or heat, is preferable in terms of heat resistance.

As specific examples of the ether dimer, the description of paragraph 0257 of JP2012-162648, etc. can be referred to, and these contents are incorporated in the present specification.

The ratio of the ether dimer in the monomer for obtaining the resin (a) is not particularly limited, but is preferably 2 to 60% by mass, more preferably 5 to 55% by mass, still more preferably 5 to 55% by mass in the total monomer components. Is 5 to 50% by mass.

The resin (a) may be a copolymer obtained by copolymerizing other monomers together with an ether dimer.

Other monomers copolymerizable with the ether dimer include, for example, a monomer for introducing an acid group, a monomer for introducing a radically polymerizable double bond, and an epoxy group for introducing an epoxy group. Examples thereof include monomers and other copolymerizable monomers. As such a monomer, only one kind may be used, or two or more kinds may be used.

Examples of the monomer for introducing an acid group include a monomer having a carboxyl group such as (meth) acrylic acid and itaconic acid, a monomer having a phenolic hydroxyl group such as N-hydroxyphenylmaleimide, maleic anhydride, and anhydrous. Examples thereof include monomers having a carboxylic acid anhydride group such as itaconic acid. Of these, (meth) acrylic acid is particularly preferable.
Further, the monomer for introducing an acid group may be a monomer capable of imparting an acid group after polymerization, for example, a monomer having a hydroxyl group such as 2-hydroxyethyl (meth) acrylate. Examples thereof include a monomer having an epoxy group such as glycidyl (meth) acrylate and a monomer having an isocyanate group such as 2-isocyanatoethyl (meth) acrylate. When a monomer for introducing a radically polymerizable double bond is used, when a monomer capable of imparting an acid group after polymerization is used, it is necessary to carry out a treatment for imparting an acid group after polymerization. The treatment for imparting an acid group after polymerization differs depending on the type of monomer, and examples thereof include the following treatments. When a monomer having a hydroxyl group is used, for example, a treatment of adding an acid anhydride such as a succinic anhydride, a tetrahydrophthalic anhydride, or a maleic anhydride can be mentioned. When a monomer having an epoxy group is used, for example, a compound having an amino group and an acid group such as N-methylaminobenzoic acid or N-methylaminophenol is added, or for example, (meth) acrylic. Examples thereof include a treatment of adding an acid anhydride such as succinic anhydride, tetrahydrophthalic anhydride, and maleic anhydride to the hydroxyl group generated after the addition of an acid such as an acid. When a monomer having an isocyanate group is used, for example, a treatment of adding a compound having a hydroxyl group and an acid group such as 2-hydroxybutyric acid can be mentioned.

When the monomer for obtaining the resin (a) contains a monomer for introducing an acid group, the content ratio thereof is not particularly limited, but 5 to 70% by mass in all the monomer components. It is preferable, more preferably 10 to 60% by mass.

Examples of the monomer for introducing a radically polymerizable double bond include, for example, a monomer having a carboxyl group such as (meth) acrylic acid and itaconic acid; and a carboxylic acid anhydride such as maleic anhydride and itaconic anhydride. Monomers having a group; monomers having an epoxy group such as glycidyl (meth) acrylate, 3,4-epoxycyclohexylmethyl (meth) acrylate, o- (or m-, or p-) vinylbenzyl glycidyl ether; and the like. .. When a monomer for introducing a radically polymerizable double bond is used, it is necessary to carry out a treatment for imparting a radically polymerizable double bond after the polymerization. The treatment for imparting a radically polymerizable double bond after polymerization differs depending on the type of monomer capable of imparting a radically polymerizable double bond to be used, and examples thereof include the following treatments. When a monomer having a carboxyl group such as (meth) acrylic acid or itaconic acid is used, glycidyl (meth) acrylate, 3,4-epoxycyclohexylmethyl (meth) acrylate, o- (or m-, or p-) ) A treatment of adding a compound having an epoxy group such as vinylbenzyl glycidyl ether and a radically polymerizable double bond can be mentioned. When a monomer having a carboxylic acid anhydride group such as maleic anhydride or itaconic anhydride is used, a treatment for adding a compound having a hydroxyl group such as 2-hydroxyethyl (meth) acrylate and a radically polymerizable double bond. Can be mentioned. When a monomer having an epoxy group such as glycidyl (meth) acrylate, 3,4-epoxycyclohexylmethyl (meth) acrylate, o- (or m-, or p-) vinylbenzyl glycidyl ether is used, (meth) Examples thereof include a treatment of adding a compound having an acid group such as acrylic acid and a radically polymerizable double bond.

When the monomer for obtaining the resin (a) contains a monomer for introducing a radically polymerizable double bond, the content ratio thereof is not particularly limited, but is 5 to 5 in all the monomer components. It is preferably 70% by mass, more preferably 10 to 60% by mass.

Examples of the monomer for introducing an epoxy group include glycidyl (meth) acrylate, 3,4-epoxycyclohexylmethyl (meth) acrylate, o- (or m-, or p-) vinylbenzyl glycidyl ether and the like. Can be mentioned.
When the monomer for obtaining the resin (a) contains a monomer for introducing an epoxy group, the content ratio thereof is not particularly limited, but 5 to 70% by mass in all the monomer components. It is preferable, more preferably 10 to 60% by mass.

As other copolymerizable monomers, for example, the description of paragraph 0328 of JP2012-046629 can be referred to, and these contents are incorporated in the present specification.

When the monomer for obtaining the resin (a) contains another copolymerizable monomer, the content ratio thereof is not particularly limited, but is preferably 95% by mass or less, preferably 85% by mass or less. More preferred.

The weight average molecular weight of the resin (a) is not particularly limited, but is preferably 2000 to 200,000, more preferably 2000,000, from the viewpoint of the viscosity of the colored radiation-sensitive composition and the heat resistance of the coating film formed by the composition. It is 5,000 to 100,000, more preferably 5,000 to 20,000.
When the resin (a) has an acid group, the acid value is preferably 30 to 500 mgKOH / g, more preferably 50 to 400 mgKOH / g.

The resin (a) can be easily obtained by polymerizing at least the above-mentioned monomer that requires an ether dimer. At this time, the cyclization reaction of the ether dimer proceeds at the same time as the polymerization to form a tetrahydropyran ring structure.
The polymerization method applied to the synthesis of the resin (a) is not particularly limited, and various conventionally known polymerization methods can be adopted, but the solution polymerization method is particularly preferable. Specifically, for example, the resin (a) can be synthesized according to the method for synthesizing the resin (a) described in JP-A-2004-300204.

Hereinafter, exemplary compounds of the resin (a) will be shown, but the present invention is not limited thereto. The composition ratio of the exemplified compounds shown below is mol%.

Among these alkali-soluble resins, particularly suitable ones are benzyl (meth) acrylate / (meth) acrylic acid copolymer and benzyl (meth) acrylate / (meth) acrylic acid / other nomonomer caranal multiplex. Contains polymers. In addition, a copolymer of 2-hydroxyethyl methacrylate, 2-hydroxypropyl (meth) acrylate / polystyrene macromonomer / benzyl methacrylate / methacrylic acid copolymer, 2-hydroxy, which is described in JP-A-7-140654. -3-phenoxypropyl acrylate / polymethylmethacrylate macromonomer / benzylmethacrylate / methacrylate copolymer, 2-hydroxyethylmethacrylate / polystyrene macromonomer / methylmethacrylate / methacrylate copolymer, 2-hydroxyethylmethacrylate / polystyrene macromonomer / Benzylmethacrate / methacrylic acid copolymer and the like.

Further, in order to improve the cross-linking efficiency of the composition in the present invention, an alkali-soluble resin having a polymerizable group may be used.
As the alkali-soluble resin having a polymerizable group, an alkali-soluble resin or the like containing an allyl group, a (meth) acrylic group, an allyloxyalkyl group or the like in a side chain is useful. Examples of the alkali-soluble resin containing these polymerizable groups include a compound containing a (meth) acryloyl group and an acrylic resin containing a carboxyl group, in which an isocyanate group and an OH group are reacted in advance to leave one unreacted isocyanate group. Urethane-modified polymerizable double bond-containing acrylic resin obtained by the reaction of the above, unsaturated group-containing acrylic obtained by the reaction of an acrylic resin containing a carboxyl group and a compound having both an epoxy group and a polymerizable double bond in the molecule. Resin, acid pendant type epoxy acrylate resin, polymerizable double bond-containing acrylic resin obtained by reacting an acrylic resin containing an OH group with a dibasic acid anhydride having a polymerizable double bond, an acrylic resin containing an OH group and isocyanate. A resin obtained by reacting a compound having a polymerizable group, an ester having a leaving group such as a halogen atom or a sulfonate group at the α- or β-position described in JP-A-2002-229207 and JP-A-2003-335814. A resin obtained by performing a basic treatment on a resin having a group as a side chain is preferable.

The acid value of the alkali-soluble resin is preferably 30 mgKOH / g to 200 mgKOH / g, more preferably 50 mgKOH / g to 150 mgKOH / g, and most preferably 70 to 120 mgKOH / g.
The weight average molecular weight (Mw) of the alkali-soluble resin is preferably 2,000 to 50,000, more preferably 5,000 to 30,000, and most preferably 7,000 to 20,000.

The content of the alkali-soluble resin in the composition for an infrared transmission filter is preferably 1 to 15% by mass, more preferably 2 to 12% by mass, and particularly preferably 2 to 12% by mass, based on the total solid content of the composition. Is 3 to 10% by mass.

<(G) Organic solvent>
The composition of the present invention (typically, a colored radiation-sensitive composition) preferably contains (G) an organic solvent.
Examples of the (G) organic solvent include the following.
As esters, for example, ethyl acetate, -n-butyl acetate, isobutyl acetate, amyl formate, isoamyl acetate, isobutyl acetate, butyl propionate, isopropyl butyrate, ethyl butyrate, butyl butyrate, methyl lactate, ethyl lactate, alkyl oxyacetate ( For example, methyl oxyacetate, ethyl oxyacetate, butyl oxyacetate (eg, methyl methoxyacetate, ethyl methoxyacetate, butyl methoxyacetate, methyl ethoxyacetate, ethyl ethoxyacetate, etc.), 3-oxypropionate alkyl esters (eg, eg Methyl 3-oxypropionate, ethyl 3-oxypropionate, etc. (eg, methyl 3-methoxypropionate, ethyl 3-methoxypropionate, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, etc.), 2- Alkyl oxypropionate esters (eg, methyl 2-oxypropionate, ethyl 2-oxypropionate, propyl 2-oxypropionate, etc. (eg, methyl 2-methoxypropionate, ethyl 2-methoxypropionate, 2-methoxy) Propyl propionate, methyl 2-ethoxypropionate, ethyl 2-ethoxypropionate)), methyl 2-oxy-2-methylpropionate and ethyl 2-oxy-2-methylpropionate (eg 2-methoxy-2-methoxy-2- Methyl methylpropionate, ethyl 2-ethoxy-2-methylpropionate, etc.), methyl pyruvate, ethyl pyruvate, propyl pyruvate, methyl acetoacetate, ethyl acetoacetate, methyl 2-oxobutate, ethyl 2-oxobutate, etc. As ethers, for example, diethylene glycol dimethyl ether, tetrahydrofuran, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, propylene glycol monomethyl ether. , Ethyl glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, etc., and as ketones, for example, methyl ethyl ketone, cyclohexanone, 2-heptanone, 3-heptanone, etc., and aromatic hydrocarbons. For example, toluene, xylene, etc. Is preferably mentioned.

The organic solvent may be used alone or in combination of two or more.
When two or more kinds of organic solvents are used in combination, the above-mentioned methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, ethyl cellosolve acetate, ethyl lactate, diethylene glycol dimethyl ether, butyl acetate, 3-methoxypropionic acid are particularly preferable. A mixed solution composed of two or more kinds selected from methyl, 2-heptanone, cyclohexanone, ethyl carbitol acetate, butyl carbitol acetate, propylene glycol methyl ether, and propylene glycol methyl ether acetate.

The amount of the organic solvent contained in the composition for an infrared transmission filter is preferably 10% by mass to 90% by mass, more preferably 20% by mass to 80% by mass, based on the total amount of the composition. It is more preferably 25% by mass to 75% by mass.

<Sensitizer>
The composition for an infrared transmission filter (typically, a colored radiation-sensitive composition) of the present invention contains a sensitizer for the purpose of improving the generation efficiency of the initiator species of the polymerization initiator and extending the photosensitive wavelength. It may be contained. Examples of the sensitizer include sensitizers having an absorption wavelength in the wavelength region of 300 nm to 450 nm.

The sensitizers include, for example, polynuclear aromatics such as phenanthrene, anthracene, pyrene, perylene, triphenylene, 9,10-dialkoxyanthracene, xanthene such as fluorescein, eosin, erythrosin, rhodamine B, rosebenzene. , Thioxanthons, cyanins, merocyanins, phthalocyanines, thionins, methylene blues, thiodins such as toluidine blue, acridins, anthraquinones, squaliums, coumarins, phenothiazines, phenazines, styrylbenzenes, azo compounds. , Diphenylmethane, triphenylmethane, distyrylbenzenes, carbazoles, porphyrin, spiryl compounds, quinacridone, indigo, styryl, pyrylium compounds, pyromethene compounds, pyrazolotriasol compounds, benzothiazole compounds, barbituric acid derivatives, thiobarbituric acid Examples thereof include derivatives, aromatic ketone compounds such as acetophenone, benzophenone and Michler's ketone, and heterocyclic compounds such as N-aryloxazolidinone.

<Chain transfer agent>
It is preferable to add a chain transfer agent to the composition for an infrared transmission filter (typically, a colored radiation-sensitive composition) of the present invention, depending on the photopolymerization initiator used. Examples of the chain transfer agent include N, N-dialkylaminobenzoic acid alkyl esters and thiol compounds, and examples of the thiol compound include 2-mercaptobenzothiazole, 2-mercapto-1-phenylbenzimidazole, and 3-mercaptopropion. Acids, etc. can be used alone or in combination of two or more.

<Polymerization inhibitor>
The composition for an infrared transmission filter (typically, a colored radiation-sensitive composition) in the present invention prevents unnecessary thermal polymerization of the polymerizable compound during production or storage of the colored radiation-sensitive composition. Therefore, it is desirable to add a small amount of polymerization inhibitor.
Polymerization inhibitors that can be used in the present invention include hydroquinone, p-methoxyphenol, di-t-butyl-p-cresol, pyrogallol, t-butylcatechol, benzoquinone, 4,4'-thiobis (3-methyl-6-). t-butylphenol), 2,2'-methylenebis (4-methyl-6-t-butylphenol), N-nitrosophenylhydroxyamine first cerium salt and the like. Of these, p-methoxyphenol is preferable.
The amount of the polymerization inhibitor added is preferably about 0.01% by mass to about 5% by mass with respect to the mass of the composition.

<Substrate adhesion agent>
Further, in the present invention, a substrate adhesion agent capable of improving the substrate adhesion may be added to the composition for an infrared transmission filter (typically, a colored radiation-sensitive composition).
As the substrate adhesion agent, it is preferable to use a silane-based coupling agent, a titanate-based coupling agent, or an aluminum-based coupling agent. Examples of the silane coupling agent include γ-methacryloxypropyltrimethoxysilane, γ-methacryloxypropyltriethoxysilane, γ-acryloxypropyltrimethoxysilane, γ-acryloxypropyltriethoxysilane, and γ-mercaptopropyl. Examples thereof include trimethoxysilane, γ-aminopropyltriethoxysilane, phenyltrimethoxysilane, and the like. Of these, γ-methacryloxypropyltrimethoxysilane is preferable as the substrate adhesion agent.

The content of the substrate adhesive is set to the total solid content of the composition for infrared transmission filter of the present invention from the viewpoint of preventing a residue from remaining in the unexposed portion when the composition for infrared transmission filter is exposed and developed. On the other hand, it is preferably 0.1% by mass or more and 30% by mass or less, more preferably 0.5% by mass or more and 20% by mass or less, and particularly preferably 1% by mass or more and 10% by mass or less. ..

<Surfactant>
Various surfactants may be added to the composition for an infrared transmission filter (typically, a colored radiation-sensitive composition) of the present invention from the viewpoint of further improving the coatability. As the surfactant, various surfactants such as a fluorine-based surfactant, a nonionic surfactant, a cationic surfactant, an anionic surfactant, and a silicone-based surfactant can be used.

In particular, since the composition for an infrared transmission filter contains a fluorine-based surfactant, the liquid characteristics (particularly, fluidity) when prepared as a coating liquid are further improved, so that the uniformity of the coating thickness and the reduction of coating thickness can be achieved. The liquid property can be further improved.
That is, when a film is formed by using a coating liquid to which a composition containing a fluorine-based surfactant is applied, the wettability to the surface to be coated is reduced by reducing the interfacial tension between the surface to be coated and the coating liquid. Is improved, and the applicability to the surface to be coated is improved. Therefore, even when a thin film of about several μm is formed with a small amount of liquid, it is effective in that it is possible to more preferably form a film having a uniform thickness with small thickness unevenness.

The fluorine content in the fluorine-based surfactant is preferably 3% by mass to 40% by mass, more preferably 5% by mass to 30% by mass, and particularly preferably 7% by mass to 25% by mass. A fluorine-based surfactant having a fluorine content within this range is effective in terms of uniformity of coating film thickness and liquid saving property, and has good solubility in the composition.

Examples of the fluorine-based surfactant include Megafuck F171, F172, F173, F176, F177, F141, F142, F143, F144, R30, F437, F475, and F479. F482, F554, F780, F781 (above, manufactured by DIC Corporation), Florard FC430, FC431, FC171 (above, manufactured by Sumitomo 3M Ltd.), Surfron S-382, SC-101, Examples thereof include SC-103, SC-104, SC-105, SC1068, SC-381, SC-383, S393, and KH-40 (all manufactured by Asahi Glass Co., Ltd.).

Specific examples of the nonionic surfactant include glycerol, trimethylolpropane, trimethylolethane, and their ethoxylates and propoxylates (for example, glycerol propoxylate, glycerin ethoxylate, etc.), polyoxyethylene lauryl ether, and polyoxyethylene. Stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene octylphenyl ether, polyoxyethylene nonylphenyl ether, polyethylene glycol dilaurate, polyethylene glycol distearate, sorbitan fatty acid ester (Pluronic L10, L31, L61, L62 manufactured by BASF), Examples thereof include 10R5, 17R2, 25R2, Tetronic 304, 701, 704, 901, 904, 150R1, Solspers 20000 (manufactured by Nippon Lubrizol Co., Ltd.) and the like.

Specifically, as cationic surfactants, phthalocyanine derivatives (trade name: EFKA-745, manufactured by Morishita Sangyo Co., Ltd.), organosiloxane polymer KP341 (manufactured by Shinetsu Chemical Industry Co., Ltd.), (meth) acrylic acid-based (meth) acrylic acid-based (meth) Co) Polymer Polyflow No. 75, No. 90, No. Examples include 95 (manufactured by Kyoeisha Chemical Co., Ltd.) and W001 (manufactured by Yusho Co., Ltd.).

Specific examples of the anionic surfactant include W004, W005, W017 (manufactured by Yusho Co., Ltd.) and the like.

Examples of the silicone-based surfactant include Torre Silicone DC3PA, Torre Silicone SH7PA, Torre Silicone DC11PA, Torre Silicone SH21PA, Torre Silicone SH28PA, Torre Silicone SH29PA, Torre Silicone SH30PA, Torre Silicone SH8400 (all, Toray Dow Corning Co., Ltd.). ), TSF-4440, TSF-4300, TSF-4445, TSF-4460, TSF-4452 (all manufactured by Momentive Performance Materials), KP341, KF6001, KF6002 (all manufactured by Shinetsu Silicone Co., Ltd.) , BYK307, BYK323, BYK330 (all manufactured by Big Chemie) and the like.

Only one type of surfactant may be used, or two or more types may be combined.
The amount of the surfactant added is preferably 0.001% by mass to 2.0% by mass, more preferably 0.005% by mass to 1.0% by mass, based on the total solid content of the color filter composition. is there.

<Other ingredients>
In the composition for an infrared transmission filter (typically, a colored sensational radiation composition) in the present invention, chain transfer of N, N-dialkylaminobenzoic acid alkyl ester, 2-mercaptobenzothiazole, etc., as required. Agents, thermal polymerization initiators such as azo compounds and peroxide compounds, thermal polymerization components, polyfunctional thiols and epoxy compounds for the purpose of increasing film strength and sensitivity, ultraviolet absorbers such as alkoxybenzophenone, dioctylphthalates, etc. It may contain various additives such as plasticizers, developable improvers such as low molecular weight organic carboxylic acids, other fillers, polymer compounds other than the above-mentioned specific binders and alkali-soluble resins, antioxidants, and anticoagulants. it can.
In addition, a thermosetting agent can be added to increase the degree of curing of the film by post-heating after development. Examples of the heat curing agent include azo compounds, thermal polymerization initiators such as peroxides, novolak resins, resole resins, epoxy compounds, and styrene compounds.

In the composition for an infrared transmission filter of the present invention, when a film having a film thickness of 0.5 μm is formed, the maximum value of the light transmittance in the thickness direction of the film in the wavelength range of 400 to 650 nm is 20% or less. The minimum value of the light transmittance in the thickness direction of the film in the wavelength range of 800 nm to 1300 nm is preferably 80% or more.
The above requirement regarding light transmittance may be achieved by any means, but for example, by adjusting the type and content of the near-infrared transmissive black color material (more specifically, near-infrared transmissivity). By setting the type and content of the black color material to the above-mentioned preferable ones), the above-mentioned light transmittance conditions can be suitably achieved.

Further, in the composition for an infrared transmission filter of the present invention, when a film having a film thickness of 0.5 μm is formed, the standard deviation of the light transmittance in the thickness direction of the film in the wavelength range of 400 to 630 nm is 6.0. It is preferably less than or equal to, more preferably 4.0 or less, and particularly preferably 3.0 or less.
The above requirement regarding light transmittance may be achieved by any means. For example, a bisbenzofuranone-based pigment is used as a near-infrared transmissive black color material, and the pigment concentration in the film is 20 to 80. It can be preferably achieved by using mass%, more preferably 40 to 80% by mass, and particularly preferably 50 to 80% by mass.
Further, as described above, the standard deviation can be further reduced by using the near-infrared transmissive black colorant in combination with the chromatic colorant as the colorant (B).

[Preparation of Colored Radiation Composition]
In the composition for an infrared transmission filter in the present invention, the above-mentioned near-infrared transmission black color material (when the near-infrared transmission black color material is a near-infrared transmission black pigment, a pigment dispersion liquid may be prepared in advance and used. ), Photopolymerization initiator, polymerizable compound, and if necessary, each component such as an ultraviolet absorber, an alkali-soluble resin, and a surfactant, and the mixture is stirred and mixed, and if necessary, the following filtration is performed to give a colored feeling. A radioactive composition can be prepared.

The colored radiation-sensitive composition in the present invention is preferably filtered through a filter for the purpose of removing foreign substances and reducing defects. Anything that has been conventionally used for filtration or the like can be used without particular limitation. For example, a filter made of a fluororesin such as PTFE (polytetrafluoroethylene), a polyamide resin such as nylon-6 and nylon-6,6, and a polyolefin resin such as polyethylene and polypropylene (including high density and ultrahigh molecular weight) can be used. Can be mentioned. Among these materials, polypropylene (including high-density polypropylene) is preferable.
The pore size of the filter is preferably about 0.01 to 7.0 μm, preferably about 0.01 to 2.5 μm, and more preferably about 0.01 to 2.0 μm. Within this range, it is possible to reliably remove fine foreign substances that hinder the preparation of a uniform and smooth colored sensational radiation composition in a subsequent step.

When using filters, different filters may be combined. At that time, the filtering by the first filter may be performed only once or twice or more.
Further, first filters having different pore diameters within the above-mentioned range may be combined. For the hole diameter here, the nominal value of the filter manufacturer can be referred to. As a commercially available filter, for example, it can be selected from various filters provided by Nippon Pole Co., Ltd., Advantech Toyo Co., Ltd., Japan Entegris Co., Ltd. (formerly Nippon Microlith Co., Ltd.), KITZ Micro Filter Co., Ltd., and the like. ..
As the second filter, one formed of the same material as the first filter described above can be used.
For example, the filtering with the first filter may be performed only with the dispersion liquid, and the second filtering may be performed after mixing the other components.

[Manufacture of infrared transmissive filter using colored sensational radiation composition]
Next, the infrared transmission filter of the present invention and a method for manufacturing the same will be described.
The infrared transmission filter of the present invention is formed from the above-mentioned composition for an infrared transmission filter of the present invention, but the composition for an infrared transmission filter of the present invention (preferably a colored radiation-sensitive composition) is placed on a substrate. ) Is used to have a colored region (colored pattern) (preferably a black region (black pattern)).
Hereinafter, the infrared transmission filter of the present invention will be described in detail through its manufacturing method (manufacturing method of the infrared transmission filter of the present invention).

The method for forming colored pixels constituting the infrared transmission filter of the present invention is a method of preparing the above-mentioned colored sensational radiation composition and providing it by a photolithography method, or a method of preparing the above-mentioned colored sensational radiation composition and using an inkjet method. A method such as a method of providing can be adopted.
Among these, a method of preparing a colored sensational radiation composition and providing it by a photolithography method is a preferable embodiment because it is easy to provide a fine pattern in an arbitrary shape.
Hereinafter, a method for producing an infrared transmission filter for a solid-state image sensor by preparing a colored radiation-sensitive composition and providing each colored pixel by a photolithography method will be described. The infrared transmission filter of the present invention is described below. It is not limited.

The method for producing an infrared transmission filter of the present invention includes a step of applying the above-mentioned colored sensational radiation composition on a substrate to form an infrared transmission composition layer (colored layer) (colored layer forming step) and the infrared transmission. It is characterized by including a step of exposing the composition layer in a pattern (exposure step) and a step of developing the infrared transmissive composition layer after exposure to form a pattern (development step).

<Colored layer forming process>
In the colored layer forming step, a colored radiation-sensitive composition is applied onto the substrate to form a colored layer (infrared ray transmitting composition layer) composed of the colored radiation-sensitive composition.

Examples of substrates that can be used in this step include CCD used for solid-state image sensors, photoelectric conversion element substrates for CMOS organic CMOS, silicon substrates, and non-alkali glass, soda glass, and Pyrex used for liquid crystal display devices (registered). (Trademark) Glass, quartz glass, and those having a transparent conductive film attached thereto can be mentioned. These substrates may be formed with a black matrix that separates each pixel.
Further, if necessary, an undercoat layer may be provided on these substrates in order to improve adhesion with the upper layer, prevent diffusion of substances, or flatten the surface of the substrate.

As a method for applying the colored sensational radiation composition of the present invention on a substrate, various coating methods such as slit coating, inkjet method, rotary coating, casting coating, roll coating, screen printing method and the like can be applied. ..

The colored layer (infrared ray transmitting composition layer) coated on the substrate can be dried (prebaked) in a hot plate, an oven or the like at a temperature of 50 ° C. to 140 ° C. in 10 seconds to 300 seconds.

The film thickness of the colored layer after drying (after prebaking) is in the range of 0.55 μm to 1.8 μm, preferably 0.60 μm or more and less than 1.8 μm, and more preferably 0.70 μm or more and 1.6 μm or less. It is particularly preferably 0.80 μm or more and 1.4 μm or less.

<Exposure process>
In the exposure step, the colored layer (infrared ray transmitting composition layer) formed in the colored layer forming step is exposed in a pattern.
In the exposure in this step, it is preferable that the colored layer is exposed by exposing through a predetermined mask pattern and curing only the light-irradiated colored layer portion. As the radiation that can be used for exposure, radiation such as g-line, h-line, and i-line is particularly preferably used, and i-line is particularly preferable. Irradiation dose is preferably ^{30mJ / cm 2 ~1500mJ / cm 2} , more preferably ^{50mJ / cm 2 ~1000mJ / cm 2} , 80mJ / cm 2 ~500mJ / cm 2 being most preferred.

<Development process>
Following the exposure step, an alkali development process (development step) is performed to elute the uncured portion after exposure into a developing solution and leave the photocured portion. By this developing step, a patterned film composed of colored pixels can be formed.
The developing method may be any of a dip method, a shower method, a spray method, a paddle method and the like, and a swing method, a spin method, an ultrasonic method and the like may be combined with these.
Before touching the developing solution, the surface to be developed can be pre-moistened with water or the like to prevent uneven development.

As the developing solution, an organic alkaline developing solution that does not cause damage to the underlying circuit or the like is desirable. The developing temperature is usually 20 ° C. to 30 ° C., and the developing time is 20 to 90 seconds.
Examples of the alkaline agent contained in the developing solution include aqueous ammonia, ethylamine, diethylamine, dimethylethanolamine, tetramethylammonium hydroxide, tetraethylammonium hydroxide, choline, pyrrol, piperidine, 1,8-diazabicyclo- [5, 4, 0] -7-Organic alkaline compounds such as undecene, inorganic compounds such as sodium hydroxide, potassium hydroxide, sodium hydrogencarbonate, potassium hydrogencarbonate and the like can be mentioned.
As the developing solution, an alkaline aqueous solution obtained by diluting these alkaline agents with pure water so that the concentration is 0.001% by mass to 10% by mass, preferably 0.01% by mass to 1% by mass is preferably used. .. When a developer composed of such an alkaline aqueous solution is used, it is generally washed (rinsed) with pure water after development to remove excess developing solution and dried.

In the production method of the present invention, after performing the coloring layer forming step, the exposure step, and the developing step described above, if necessary, the formed coloring pattern is cured by post-heating (post-baking) or post-exposure. It may include a curing step. Post-baking is a post-development heat treatment for complete curing, and is usually a heat curing treatment at 100 ° C. to 270 ° C.
When light is used, it can be carried out by g-ray, h-ray, i-ray, excimer laser such as KrF or ArF, electron beam, X-ray, etc., but at a low temperature of about 20 to 50 ° C. with an existing high-pressure mercury lamp. The irradiation time is preferably 10 seconds to 180 seconds, preferably 30 seconds to 60 seconds. In the case of combined use of post-exposure and post-heating, it is preferable to carry out post-exposure first.

An infrared transmission filter is produced by performing the colored layer forming step, the exposure step, and the developing step (further, if necessary, a curing step) described above.
The infrared transmission filter may be configured only with colored pixels exhibiting specific spectral characteristics of the present invention, or red, green, blue, magenta, yellow, cyan, black, and colored pixels exhibiting the above spectral characteristics. A color filter having colored pixels such as colorless may be configured. When a color filter is formed together with pixels of other colors, colored pixels exhibiting the specific spectral characteristics of the present invention may be provided first or later.

The colored radiation-sensitive composition of the present invention can be easily cleaned and removed using a known cleaning liquid even when it adheres to, for example, the nozzle of the discharge portion of the coating device, the piping portion of the coating device, the inside of the coating device, or the like. .. In this case, in order to perform more efficient cleaning and removal, it is preferable to use the above-mentioned organic solvent as the cleaning liquid as the organic solvent contained in the colored radiation-sensitive composition.

In addition, JP-A-7-128867, JP-A-7-146562, JP-A-8-278637, JP-A-2000-273370, JP-A-2006-85140, JP-A-2006-291191, The cleaning solutions described in JP-A-2007-2101, JP-A-2007-2102, JP-A-2007-281523, etc. are also suitably used as cleaning solutions for cleaning and removing the colored radiation-sensitive composition of the present invention. Can be done.
As the cleaning liquid, it is preferable to use alkylene glycol monoalkyl ether carboxylate or alkylene glycol monoalkyl ether.
These organic solvents that can be used as a cleaning liquid may be used alone or in combination of two or more.
When two or more kinds of organic solvents are mixed, a mixed solvent obtained by mixing an organic solvent having a hydroxyl group and an organic solvent having no hydroxyl group is preferable. The mass ratio of the organic solvent having a hydroxyl group to the organic solvent having no hydroxyl group is 1/99 to 99/1, preferably 10/90 to 90/10, and more preferably 20/80 to 80/20. The mixed solvent is a mixed solvent of propylene glycol monomethyl ether acetate (PGMEA) and propylene glycol monomethyl ether (PGME), and the ratio thereof is particularly preferably 60/40.
In addition, in order to improve the permeability of the cleaning liquid to the colored radiation-sensitive composition, the above-mentioned surfactant may be added to the cleaning liquid as a surfactant that can be contained in the colored radiation-sensitive composition.

Further, the infrared transmission filter of the present invention manufactured by the method for manufacturing an infrared transmission filter of the present invention can be suitably mounted on a solid-state image sensor such as a CCD sensor, a CMOS sensor, an organic CMOS sensor, or a CIGS image sensor. .. In particular, it is preferably mounted on a solid-state image sensor of a high-resolution CCD sensor, CMOS sensor, or organic CMOS sensor having more than 1 million pixels. The infrared transmission filter of the present invention can be arranged, for example, between a light receiving portion of each pixel constituting the CCD element and a microlens for condensing light.

[Infrared sensor]
The infrared sensor of the present invention includes the infrared transmission filter of the present invention. The configuration of the infrared sensor of the present invention is not particularly limited as long as it is a configuration provided with an infrared transmission filter and functions as a solid-state image sensor, and examples thereof include the following configurations.

A transfer electrode made of a plurality of photodiodes, polyvinyl, etc. constituting a light receiving area of a solid-state image sensor (CCD sensor, CMOS sensor, organic CMOS sensor, etc.) is provided on a substrate, and the photodiode and the transfer electrode are on the transfer electrode. It has a light-shielding film made of tungsten or the like in which only the light-receiving part of the photodiode is opened, and has a device protective film made of silicon nitride or the like formed on the light-shielding film so as to cover the entire surface of the light-shielding film and the light-receiving part of the photodiode. It is a configuration having the infrared transmission filter of the present invention on the device protective film.
Further, a configuration having a light collecting means (for example, a microlens or the like; the same applies hereinafter) on the device protective layer and below the infrared transmitting filter (on the side closer to the substrate), or having a light collecting means on the infrared transmitting filter. It may be a configuration or the like.

The organic CMOS sensor is composed of a thin film panchromatic photosensitive organic photoelectric conversion film and a CMOS signal readout substrate as a photoelectric conversion layer, and the organic material plays a role of capturing light and converting it into an electric signal. It is a two-layer hybrid structure in which the inorganic material plays the role of extracting the signal to the outside, and in principle, the aperture ratio can be set to 100% with respect to the incident light. Since the organic photoelectric conversion film is a structure-free continuous film and can be laid on a CMOS signal reading substrate, it does not require an expensive microfabrication process and is suitable for pixel miniaturization.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to the following Examples as long as the gist of the present invention is not exceeded. Examples 6 to 7 shall be read as reference examples. Unless otherwise specified, "parts" and "%" are based on mass.

[Preparation of pigment dispersion liquid B-1]
Using a zirconia bead with a diameter of 0.3 mm, use a bead mill (high-pressure disperser NANO-3000-10 with decompression mechanism (manufactured by Nippon BEE Co., Ltd.)) to obtain a near-infrared transmissive black pigment using a mixed solution having the following composition. The pigment dispersion liquid B-1 was prepared by mixing and dispersing until the average particle size shown in Table 1 was obtained.
-Color material: 13.0 parts of IRGAPHOR BK manufactured by BASF-Dispersant: 1 5.2 parts of the following dispersion resin-Organic solvent: Propylene glycol methyl ether acetate (PGMEA)
81.8 copies

[Preparation of Pigment Dispersions B-2 to B-16]
Pigment dispersions B-2 to B-16 were prepared by the same method as in the above [Preparation of pigment dispersion B-1] except that each component shown in Table 1 was used in the amount shown in Table 1. did.
In Table 1, the numerical values shown in parentheses after each component indicate the amount (unit: part) of the component used.
In the preparation of the pigment dispersion liquid containing no near-infrared transmission black pigment, the mixing time using the high-pressure disperser NANO-3000-10 was set to 3 hours.

[Measurement of average particle size of pigment]
The average particle size (volume basis) of the near-infrared transmissive black pigment was measured using the pigment dispersion liquids B-1 to B-3 using MICROTRACUPA 150 manufactured by Nikkiso Co., Ltd. The measurement results are shown in Table 1.

The abbreviations and abbreviations of each component in the table are as follows. In the following dispersion resin 1 and dispersion resin 2, the numerical value written together with each structural unit (the numerical value written together with the main chain repeating unit) represents the molar ratio of the structural unit. The numerical value written together with the repeating site of the side chain indicates the number of repeating sites of the repeating site.

[Near infrared transmissive black color material (A)]
I used the one mentioned above.

[Colorant (B)]
Lumogen Black FK4280: Black Pigment manufactured by BASF Lumogen Black FK4281: Black Pigment manufactured by BASF Y139: C.I. I. Pigment Yellow 139
Y150: C.I. I. Pigment Yellow 150
R254: C.I. I. Pigment Red 254
G36: C.I. I. Pigment Green 36
PV23: C.I. I. Pigment Violet 23
B15: 6: C.I. I. Pigment Blue 15: 6
Carbon Black MS-10E: Black pigment manufactured by Mitsubishi Chemical Corporation

[Dispersant-related]

Dispersed resin 3: EFKA4401 manufactured by BASF (resin having an amine group)
Dispersed Resin 4: Alkali-soluble resin-3 described in paragraphs [0172] and [0173] of JP-A-2009-69822.
Dispersed resin 5: DISPERBYK-161 manufactured by Big Chemie
Dispersed resin 6: DISPERBYK-110 manufactured by Big Chemie

Dispersant 1: Dispersant-1 according to paragraph [0175] of JP2009-69822A.
S12000: Solpers 12000 manufactured by Looprisol
Acrylic resin 1: Acrylic resin derivative described in paragraph [0083] of JP2012-188384A. Pigment derivative 1 described in paragraph [0090] of JP2012-18384.

(Examples 1 to 10, Comparative Examples 1 to 6)
[Preparation of Colored Radiation Composition]
The components shown in Table 2 below were mixed in the amounts shown in Table 2 below to prepare colored radiation-sensitive compositions of Examples 1 to 10 and Comparative Examples 1 to 6, respectively. The numerical values in Table 2 indicate the amount of the corresponding component used (unit: parts by mass).

The contents of each component in Table 2 are shown below.

-Alkali-soluble resin 2: Alkali-soluble resin-1 (epoxy acrylate resin) described in paragraph [0170] of JP2009-69822A.
-Alkali-soluble resin 3: Acrylic resin described in paragraph [0083] of JP2012-188384A.

-Polymerizable compound 4: U-6LPA (urethane acrylate) manufactured by Shin-Nakamura Chemical Co., Ltd.
Polymerizable compound 5: PM-21 manufactured by Nippon Kayaku Co., Ltd. (2- (meth) acryloyloxyethyl caproate acid phosphate)
Polymerizable compound 6: Aronix M-402 manufactured by Toagosei Corporation

-A-1 (Near infrared transmission black color material (A)): Azo dye represented by the following formula (A-1)

Photopolymerization Initiator 2: Photopolymerization Initiator-1 (Oxime Initiator) described in paragraph [0177] of JP-A-2009-69822.
-Photopolymerization initiator 3: IRGACURE OXE-02 manufactured by BASF.

Surfactant 1: 1.00 mass% PGMEA solution of Megafac F-781F manufactured by DIC Corporation ・ Surfactant 2: 1.00 mass% PGMEA solution of BYK-330 manufactured by Big Chemie Japan ・ Polymerization inhibitor: p-methoxyphenol

-Organic solvent 1: Propylene glycol methyl ether acetate (PGMEA)
-Organic solvent 2: 3-methoxybutyl acetate-Organic solvent 3: Cyclohexanone

The spectral characteristics were evaluated using each of the obtained colored radiation-sensitive compositions. The results are summarized in Table 3.

[Spectroscopic characteristics]
Each colored sensational radiation composition is spin-coated on a glass substrate, applied so that the film thickness after post-baking is 0.5 μm, dried on a hot plate at 100 ° C. for 120 seconds, and then dried. Further, heat treatment (post-baking) was performed for 300 seconds using a hot plate at 200 ° C.
The light transmittance of the substrate having the colored layer in the wavelength range of 300 to 1300 nm was measured using a spectrophotometer (ref. Glass substrate) of an ultraviolet-visible near-infrared spectrophotometer U-4100 (manufactured by Hitachi High-Tech). ..

(Infrared transmittance)
Based on the measurement method described in the above [Spectroscopic characteristics], the minimum value X _min of the light transmittance in the wavelength range of 800 nm to 1300 nm was evaluated based on the following evaluation criteria.
<Evaluation criteria>
A: 80% ≤ X _min
B: X _min <80%

(Visible light transmittance)
Based on the measurement method described in the above [Spectroscopic characteristics], the maximum value Y _max of the light transmittance in the wavelength range of 400 nm to 650 nm was evaluated based on the following evaluation criteria.
<Evaluation criteria>
A: Y _max ≤ 20%
B: 20% <Y _max

Here, in the colored radiation-sensitive compositions of Examples 1 to 6, the concentration of the near-infrared transmissive black color material with respect to the total solid content of the infrared transmissive filter composition (and thus the film to be formed) is It is 60% by mass.
In addition, the IRGAPHOR BK used in Example 1 was used in Comparative Examples, Lumogen Black FK4280, Lumogen Black FK4281, Carbon Black MS-10E, C.I. I. Pigment Black 31 and C.I. I. When replaced with each of Pigment Black 32 (the amount used is the same as IRGAPHOR BK in Example 1), the maximum value Y _max of the light transmittance in the above wavelength range of 400 nm to 650 nm exceeds 30%. It was a thing.

(Visible light absorbance)
Based on the measurement method described in [spectral characteristics], the average value _{Z ave} absorbance in the wavelength range of 400nm~630nm was evaluated based on the following evaluation criteria. The higher the score, the higher the visible light absorbance and the better the performance.
<Evaluation criteria>
5: 0.90 ≤ Z _ave
4: 0.80 ≤ Z _ave <0.90
3: 0.75 ≤ Z _ave <0.80
2: 0.70 ≤ Z _ave <0.75
1: Z _ave <0.70

(Visible light flatness)
Based on the measurement method described in the above [Spectroscopic characteristics], the standard deviation σ of the light transmittance in the wavelength range of 400 nm to 630 nm was evaluated based on the following evaluation criteria. The higher the score, the smaller the standard deviation and the better the performance. The standard deviation σ can be easily calculated by a well-known calculation software or the like from the data of the light transmittance in the wavelength range of 400 nm to 630 nm.
<Evaluation criteria>
5: 1.0 <σ≤2.0
4: 2.0 <σ ≤ 3.0
3: 3.0 <σ ≤ 6.0
2: 6.0 <σ ≤ 10.0
1: 10.0 <σ

The above results are shown in Table 3.

Compared with the infrared transmission filter of the comparative example formed by the colored sensational radiation composition of the comparative example, the infrared transmission filter of the example formed by the colored sensational radiation composition of the example all transmits infrared light. The rate was high, the visible light transmittance was low, and the visible light absorbance was high.
Therefore, it was found that the colored sensational radiation composition of the example can transmit infrared rays (particularly near infrared rays) in a state where there is little noise derived from the visible light component.
Further, in the examples in which the near-infrared transmissive black color material was used in combination with an appropriate colorant so as to compensate for the range where the absorbance was small, the flatness of visible light was further improved.

[Manufacturing of infrared transmission filter]
Each of the colored sensational radiation compositions of Examples 1 to 10 was applied onto a silicon wafer using a spin coater so that the film thickness after drying was 0.5 μm, and 120 using a hot plate at 100 ° C. Heat treatment (pre-baking) was performed for seconds.
Then, i-ray stepper exposure apparatus FPA-3000i5 + (Canon (Ltd.)) was used, 50 mJ / cm ² to 50~750mJ / cm ² using a photomask having a square pixel pattern of 1.4μm angle is formed By performing the exposure in steps, the optimum exposure amount for resolving the square pixel pattern was determined, and the exposure was performed with this optimum exposure amount.
After that, the silicon wafer on which the exposed coating film was formed was placed on a horizontal rotary table of a spin shower developing machine (DW-30 type, manufactured by Chemitronics Co., Ltd.), and CD-2060 (Fujifilm Electronics Co., Ltd.) was placed. Paddle development was performed at 23 ° C. for 60 seconds using a material manufactured by Materials Co., Ltd. to form a colored pattern on a silicon wafer.
The silicon wafer on which the colored pattern was formed was rinsed with pure water and then spray-dried.
Further, heat treatment (post-baking) was performed for 300 seconds using a hot plate at 200 ° C. to obtain silicon wafers having colored patterns as infrared transmission filters of Examples 1 to 10, respectively.
The infrared transmission filters of Examples 1 to 10 formed as described above all had high infrared light transmittance, low visible light transmittance, and high visible light absorbance.
Therefore, according to the composition for an infrared transmission filter of the present invention, infrared rays (particularly near infrared rays) can be emitted even if they are very thin (for example, a thickness of 0.5 μm) in a state where there is little noise derived from visible light components and the like. It was found that a transmissible infrared transmission filter can be obtained.

Claims (33)

A composition for an infrared transmission filter containing a near-infrared transmission black color material, wherein the near-infrared transmission black color material is selected from the group consisting of bisbenzofuranone-based pigments, azomethine-based pigments, and perylene-based pigments. The content of the near-infrared transmissive black color material is 20 to 80% by mass based on the total solid content of the composition for the infrared transmissive filter, and the composition for the infrared transmissive filter is: Further, the composition for an infrared transmission filter contains a colorant different from that of the near-infrared transmissive black colorant, the colorant is one or more selected from organic pigments, and the content of the colorant is the composition for the infrared transmission filter. When a film having a thickness of 0.5 μm and a total solid content of 1 to 30% by mass was formed, the standard deviation of the light transmittance in the thickness direction of the film in the wavelength range of 400 to 630 nm was 6. A composition for an infrared transmission filter, which is 0 or less. A composition for an infrared transmission filter containing a near-infrared transmission black color material, wherein the near-infrared transmission black color material is selected from the group consisting of bisbenzofuranone-based pigments, azomethine-based pigments, and perylene-based pigments. The content of the near-infrared transmissive black color material is 20 to 80% by mass based on the total solid content of the composition for the infrared transmissive filter, and the composition for the infrared transmissive filter is: Further, the composition for an infrared transmission filter contains a colorant different from that of the near-infrared transmissive black colorant, the colorant is one or more selected from organic pigments, and the content of the colorant is the composition for the infrared transmission filter. When a film having a thickness of 0.5 μm, which is 1 to 30% by mass based on the total solid content, is formed, the maximum value of the light transmittance in the thickness direction of the film in the wavelength range of 400 to 650 nm is 20%. The composition for an infrared transmission filter, wherein the minimum value of the light transmittance in the thickness direction of the film in the wavelength range of 800 nm to 1300 nm is 80% or more. A composition for an infrared transmission filter containing a near-infrared transmission black color material, wherein the near-infrared transmission black color material is selected from the group consisting of bisbenzofuranone-based pigments, azomethine-based pigments, and perylene-based pigments. The content of the near-infrared transmissive black color material is 20 to 80% by mass based on the total solid content of the infrared transmissive filter composition, and the infrared transmissive filter composition is: Further, the composition for an infrared transmission filter contains a colorant different from that of the near-infrared transmission black colorant, the colorant is one or more selected from organic pigments, and the content of the colorant is the composition for the infrared transmission filter. The composition for the infrared transmission filter is 1 to 30% by mass with respect to the total solid content, further contains an alkali-soluble resin, and the content of the alkali-soluble resin is the total solid of the composition for the infrared transmission filter. A composition for an infrared transmission filter, which is 1 to 15% by mass based on a minute. The composition for an infrared transmission filter according to claim 3, wherein the content of the alkali-soluble resin is 3 to 10% by mass with respect to the total solid content of the composition for an infrared transmission filter. The infrared transmission filter according to any one of claims 1 to 4, wherein the near-infrared transmission black color material is at least one selected from the group consisting of bisbenzofuranone-based pigments and perylene-based pigments. Composition. The infrared transmission filter according to any one of claims 1 to 5, wherein the content of the near-infrared transmission black color material is 40 to 80% by mass with respect to the total solid content of the composition for an infrared transmission filter. Composition for. The composition for an infrared transmission filter according to any one of claims 1 to 6, wherein the average particle size of the near-infrared transmission black color material is 50 nm or less. The composition for an infrared transmission filter according to any one of claims 1 to 7, wherein the colorant is a yellow pigment. The yellow pigment is C.I. I. The composition for an infrared transmission filter according to claim 8, which is Pigment Yellow 139. The composition for an infrared transmission filter according to any one of claims 1 to 7, wherein the colorant comprises two kinds of organic pigments. Further, the composition for an infrared transmission filter according to any one of claims 1 to 10, which contains a polymer dispersant, wherein the polymer dispersant is a resin or amine having an acid value of 60 mgKOH / g or more. A composition for an infrared transmission filter, which is one or more selected from the group consisting of a resin having a group and an oligoimine-based resin. The composition for an infrared transmission filter according to any one of claims 1 to 11, further comprising a polymerizable compound. The composition for an infrared transmission filter according to claim 12, wherein the polymerizable compound is at least one selected from the group consisting of radically polymerizable monomers represented by the following general formulas (MO-1) to (MO-5). object.

In the above general formula, n is 0 to 14 and m is 1 to 8. A plurality of R and T existing in one molecule may be the same or different. When T is an oxyalkylene group, the end on the carbon atom side is bonded to R.
In each of the polymerizable compounds represented by the general formulas (MO-1) to (MO-5), at least one of a plurality of Rs present is -OC (= O) CH = CH ₂ or -OC (=). O) Represents a group represented by C (CH ₃ ) = CH ₂ . The composition for an infrared transmission filter according to claim 12 or 13, wherein the content of the polymerizable compound is 2 to 25% by mass with respect to the total solid content of the composition for an infrared transmission filter. The composition for an infrared transmission filter according to any one of claims 1 to 14, further comprising a photopolymerization initiator. The composition for an infrared transmission filter according to any one of claims 1 to 15, further comprising a surfactant. The composition for an infrared transmission filter according to claim 16, wherein the surfactant is a fluorine-based surfactant. The composition for an infrared transmission filter according to claim 1 or 2, further comprising an alkali-soluble resin. A composition for an infrared transmission filter containing a near-infrared transmission black color material, wherein the near-infrared transmission black color material is selected from the group consisting of bisbenzofuranone-based pigments, azomethine-based pigments, and perylene-based pigments. The content of the near-infrared transmissive black color material is 20 to 80% by mass based on the total solid content of the infrared transmissive filter composition, and the infrared transmissive filter composition is: Further, the composition for an infrared transmission filter contains a colorant different from that of the near-infrared transmission black color material, the colorant is one or more selected from organic pigments, and the content of the colorant is the composition for the infrared transmission filter. It is 1 to 30% by mass based on the total solid content, and the colorant is C.I. I. Pigment Yellow 139, a composition for an infrared transmission filter. The composition for an infrared transmission filter according to claim 19, wherein the near-infrared transmission black color material is at least one selected from the group consisting of bisbenzofuranone-based pigments and perylene-based pigments. The composition for an infrared transmission filter according to claim 19 or 20, wherein the content of the near-infrared transmission black color material is 40 to 80% by mass with respect to the total solid content of the composition for an infrared transmission filter. The composition for an infrared transmission filter according to any one of claims 19 to 21, wherein the near-infrared transmission black color material has an average particle size of 50 nm or less. Further, the composition for an infrared transmission filter according to any one of claims 19 to 22, which contains a polymer dispersant, wherein the polymer dispersant is a resin or amine having an acid value of 60 mgKOH / g or more. A composition for an infrared transmission filter, which is one or more selected from the group consisting of a resin having a group and an oligoimine-based resin. The composition for an infrared transmission filter according to any one of claims 19 to 23, further comprising a polymerizable compound. The composition for an infrared transmission filter according to claim 24, wherein the polymerizable compound is at least one selected from the group consisting of radically polymerizable monomers represented by the following general formulas (MO-1) to (MO-5). object.


In the above general formula, n is 0 to 14 and m is 1 to 8. A plurality of R and T existing in one molecule may be the same or different. When T is an oxyalkylene group, the end on the carbon atom side is bonded to R.
In each of the polymerizable compounds represented by the general formulas (MO-1) to (MO-5), at least one of a plurality of Rs present is -OC (= O) CH = CH ₂ or -OC (=). O) C (CH ₃ ) = represents a group represented by CH ₂ . The composition for an infrared transmission filter according to claim 24 or 25, wherein the content of the polymerizable compound is 2 to 25% by mass with respect to the total solid content of the composition for an infrared transmission filter. The composition for an infrared transmission filter according to any one of claims 19 to 26, further comprising a photopolymerization initiator. The composition for an infrared transmission filter according to any one of claims 19 to 27, further containing an alkali-soluble resin. The composition for an infrared transmission filter according to any one of claims 19 to 28, further containing a surfactant. The composition for an infrared transmission filter according to claim 29, wherein the surfactant is a fluorine-based surfactant. An infrared transmission filter formed from the composition for an infrared transmission filter according to any one of claims 1 to 30. The step of applying the composition for an infrared transmission filter according to any one of claims 1 to 30 onto a substrate to form an infrared transmission composition layer, and exposing the infrared transmission composition layer in a pattern. A method for manufacturing an infrared transmission filter, comprising a step and a step of developing the infrared transmission composition layer after exposure to form a pattern. An infrared sensor comprising the infrared transmission filter according to claim 31.