Colored composition film, colored composition, and visible light transmission-adjusting material

Abstract

The present invention addresses the problem of obtaining a colored composition film that can provide light containing the three primary colors at high color purity by a simple process. In order to solve the problem, the present invention proposes a colored composition film that contains the following colorant (A) and colorant (B) that absorbs at a prescribed wavelength. Colorant (A): colorant for which the light transmission spectrum in the 430-580 nm wavelength range satisfies formula (1). Formula (1) 0.01 < T550 / T520 < 0.95. (wherein TA (A is a number) is the light transmittance at a wavelength of A nm). Colorant (B) that absorbs at a prescribed wavelength: a colorant having a minimum value for light transmittance in the range of 490 ± 25 nm and having a wavelength in said wavelength range at which the light transmittance is 50% or less.

Description

Colored composition film, colored composition, and visible light transmission modifier

[0001] The present invention relates to a colored composition film and a visible light transmission modifier, which are suitably used in optical components and display devices containing the same.

[0002] Self-emissive display devices equipped with self-emissive elements such as organic light-emitting elements are highly regarded for their miniaturization, low power consumption, high brightness, and fast response speed, and are expected to be the next generation of display devices. However, because metal electrodes and wiring are formed within the display surface area of ​​self-emissive display devices, external light incident from outside the display screen is reflected by these electrodes and wiring, which can easily lead to a decrease in display quality, such as reduced contrast.

[0003] To solve the above problems, a configuration has been proposed in which a polarizing plate and a phase delay plate are arranged on the surface of a self-illuminating display device. However, in a configuration using a polarizing plate and a phase delay plate, when the light emitted from the display device passes through the polarizing plate and the phase delay plate and is emitted to the outside, most of the light is lost, which tends to lead to a decrease in the device's lifespan.

[0004] On the other hand, display devices require high color purity. This is because achieving high color purity widens the color reproduction range and improves color reproduction accuracy. One known method for reducing the adverse effects of external light while maintaining good color reproduction accuracy is to install a color filter on the surface of a self-emissive display device. However, the formation of color filters requires many steps, which significantly increases costs.

[0005] Japanese Patent Publication No. 2022-140434

[0006] However, the invention disclosed in Patent Document 1 had the following problems.

[0007] In other words, to achieve high color purity, the light transmission spectrum should have a wide U-shaped absorption region that transmits only transmitted light in the wavelength ranges of high-purity blue (around 460 nm), green (around 520 nm), and red (around 640 nm), while blocking all other light rays in the surrounding wavelength ranges. However, the first and second colorants in Patent Document 1 both use colorants that, when expressed as a light transmission spectrum, have a narrow V-shaped absorption region with a wider tail near the baseline. As a result, they transmit a lot of light rays in the surrounding wavelength ranges other than high-purity blue, high-purity green, and high-purity red, which reduces the color purity of transmitted blue, green, and red light. Consequently, the color gamut is narrowed and color reproduction is insufficient.

[0008] In particular, the wavelength range between highly pure green (around 520 nm) and highly pure red (around 640 nm) is wide, and the amount of transmitted light that reduces the color purity of these colors is also large. Furthermore, if one tries to reduce this amount by replacing the second colorant with a material that has a wider half-width, some of the transmitted light in the green wavelength range is also absorbed, resulting in a decrease in the transmittance of green.

[0009] Furthermore, with the first colorant, which has a relatively wide half-width, the transmission spectrum shows a broad base near the baseline. This results in significant absorption of transmitted light in the blue and green wavelength regions, leading to a substantial decrease in the color density of both blue and green transmitted light.

[0010] Therefore, the main objective of the present invention is to obtain a colored composition film with high color purity of blue and green by having high light transmittance at wavelengths of 460 nm near high purity blue and 520 nm near high purity green, while keeping light transmittance low in the intermediate wavelength region around 490 nm. Furthermore, an improved embodiment of the present invention aims to further improve color purity by keeping light transmittance low in the wavelength region from 550 nm to 580 nm, which is longer than the wavelength of green, thereby reducing the transmitted light in the wavelength region that causes a decrease in the color purity of green.

[0011] In other words, the present invention is a colored composition film comprising the following coloring agent (A) and a specific wavelength absorbing coloring agent (B). Coloring agent (A): A coloring agent whose light transmission spectrum in the wavelength range of 430 to 580 nm satisfies the following formula (1). 0.01 < T ５５０ / T ５２０ <0.95 Formula (1) (Here, T Ａ (A is a number) is the light transmittance at wavelength A nm.) Specific wavelength absorbing colorant (B): A colorant having wavelengths in the light transmission spectrum of the wavelength range 430 to 580 nm that have a minimum value within the range of 490 ± 25 nm, and in that wavelength range, the light transmittance is 50% or less.

[0012] Furthermore, the colored composition film of the present invention is more preferably characterized in that the coloring agent (A) has a minimum value of light transmittance within the range of 580 ± 60 nm in the wavelength range of 420 to 640 nm, and the full width at half maximum of the peak (trough) containing the minimum value is 80 ± 30 nm.

[0013] Furthermore, the colored composition film of the present invention is more preferably such that, in the light transmission spectrum in the wavelength range of 430 to 580 nm, the maximum value of the light transmission spectrum is within the range of 490 ± 50 nm, and the full width at half maximum of the peak containing the maximum value is 70 ± 20 nm.

[0014] Furthermore, the colored composition film of the present invention is more preferably characterized in that the half-width of the peak (trough) containing the minimum value of light transmittance within the range of 490 ± 25 nm of the specific wavelength absorbing colorant (B) is 20 ± 15 nm.

[0015] According to the colored composition film of the present invention, the interaction between the coloring agent (A) and the specific wavelength absorbing colorant (B) results in high light transmittance at wavelengths of 460 nm near high-purity blue and 520 nm near high-purity green, while keeping light transmittance low in the intermediate wavelength region around 490 nm. This reduces the amount of transmitted light in the wavelength region that causes a decrease in the color purity of blue and green, thereby improving the color purity of blue and green. As a result, the color gamut is widened and color reproducibility can be improved.

[0016] Furthermore, according to the further improved colored composition film of the present invention, the specific wavelength absorbing colorant (B) exhibits a light transmission spectrum with a very small half-width peak and a minimum value. As a result, the effect of the specific wavelength absorbing colorant (B) on the light transmittance at wavelengths of 460 nm near blue and 520 nm near green is minimal, and the color density of transmitted blue and green light can be maintained at a high level.

[0017] Furthermore, when the light transmittance in the blue and green wavelength regions is high, in embodiments containing a red colorant, the difference between the light transmittance in the blue and green wavelength regions and the light transmittance in the red wavelength region becomes smaller, making it easy to adjust the film to an achromatic color without disrupting the chromatic balance.

[0018] This is an example of the light transmission spectrum of a coloring agent (A) contained in the colored composition film of the present invention. This is another example of the light transmission spectrum of a coloring agent (A) contained in the colored composition film of the present invention. This is an example of the light transmission spectrum of a specific wavelength absorbing coloring agent (B) contained in the colored composition film of the present invention. This is an example of the light transmission spectrum of a colored composition film of the present invention, and is an example of the light transmittance spectrum of a colored composition film in which a coloring agent (A) showing the light transmission spectrum of the solid line in Figure 2 and a specific wavelength absorbing coloring agent (B) showing the light transmission spectrum of the solid line in Figure 3 are used in combination. This is a schematic cross-sectional view of an example of a colored composition film of the present invention formed as a laminated film. This is a schematic cross-sectional view showing an example of a sheet formed on a substrate using the colored composition film of the present invention, where (a) is an example in which another layer is formed between the colored composition film of the present invention and the substrate, (b) is an example in which another layer is formed on the side of the substrate opposite to the side on which the colored composition film of the present invention is provided, and (c) is an example in which another layer is formed as a layer covering the colored composition film of the present invention formed on the substrate. This is a schematic cross-sectional view showing an example in which the colored composition film of the present invention is installed on the surface of a display and applied as a visible light transmission adjusting material. This is an example of applying the colored composition film of the present invention as a visible light transmission modifier by coating it onto a patterned substrate formed from a colored resin composition.

[0019] In this specification, the following terms have the meanings set forth below: Colorant: A material that, when contained, alters the visible light transmission spectrum of a colored composition film. When referred to as X-color colorant (where X is a color name), it means a colorant that has the color X. Specific wavelength absorbing colorant: A colorant that has an absorption peak in the wavelength region specified in the special description and has a light transmittance of 70% or more in the visible light wavelength region other than that wavelength region. Specific wavelength absorbing colorant (B): A specific wavelength absorbing colorant in which the wavelength region specified in the special description is 430 to 580 nm, and the minimum value of light transmittance is within the range of 490 ± 25 nm, and the colorant has wavelengths in that wavelength range (i.e., the range of 490 ± 25 nm) in which the light transmittance is 50% or less, preferably 40% or less. Specific wavelength absorbing colorant (C): A specific wavelength absorbing colorant in which the wavelength range specified in the above special description is 550 to 600 nm, and the minimum value of light transmittance is within the range of 575 ± 25 nm, and the colorant has wavelengths in which the light transmittance in that wavelength range (i.e., the range of 575 ± 25 nm) is 50% or less, preferably 40% or less. Specific wavelength absorbing colorant (D): A specific wavelength absorbing colorant in which the wavelength range specified in the above special description is 310 to 440 nm, and the minimum value of light transmittance is within the range of 375 ± 65 nm, and the colorant has wavelengths in which the light transmittance in that wavelength range (i.e., the range of 375 ± 65 nm) is 50% or less, preferably 40% or less. Coloring agent: A coloring agent or mixture of coloring agents contained in a colored composition film or colored composition, other than specific wavelength absorbing coloring agent (B), specific wavelength absorbing coloring agent (C), and specific wavelength absorbing coloring agent (D). Coloring agent (A): A coloring agent whose light transmission spectrum in the wavelength range of 430 to 580 nm satisfies the following formula (1). 0.01 < T ５５０ / T ５２０ <0.95 Formula (1) (Here, T Ａ (A is a number) represents the light transmittance at wavelength A nm.) The method for measuring light transmittance, including the identification of the absorption peak and the measurement of the minimum value and full width at half maximum, is determined by the method described later.

[0020] The present invention will be described in detail below with reference to the attached drawings.

[0021] The colored composition film of the present invention contains a coloring material (A) and a specific wavelength absorbing coloring material (B). That is, the coloring material contained in the colored composition film is a coloring material that satisfies the following mathematical formula (1), that is, the coloring material (A). 0.01 < T ５５０ / T ５２０ < 0.95 Mathematical formula (1) (Here, T Ａ (A is a number) is the light transmittance at wavelength A nm.) Further, when the colored material composition film of the present invention contains either or both of a specific wavelength absorbing coloring material (C) and a specific wavelength absorbing coloring material (D), in the mixture of the coloring material (A) and the specific wavelength absorbing coloring material (C) and / or the specific wavelength absorbing coloring material (D), it is preferable to satisfy the above mathematical formula (1).

[0022] FIGS. 1 and 2 are examples of the light transmission spectra of the coloring material (A) contained in the colored composition film of the present invention, and FIG. 3 is an example of the light transmission spectrum of the specific wavelength absorbing coloring material (B) contained in the colored composition film of the present invention.

[0023] In the present invention, the light transmission spectrum of the coloring material is determined by the following measurement method ("Measurement method 1"). Also, confirmation of whether or not the mathematical formula (1) is satisfied is by this Measurement method 1.

[0024] <Measurement method 1> It is dispersed in a solvent solution of a colorless and transparent acrylic resin so that the concentration in the solid content of the coloring material becomes 35% by weight, and a composition of the coloring material with a solid content concentration of 20% by weight is prepared. The composition of the coloring material is formed into a film on a glass substrate so that the film thickness after solvent drying becomes 2.0 μm, and it is measured using a spectroscopic measuring instrument (microscopic spectroscopic measuring instrument "LCF-100MA" manufactured by Otsuka Electronics Co., Ltd., MCPD9800 spectroscope 3683C). The measurement conditions are an exposure time of 30 msec, an integration number of 4 times, a sensitivity of Normal, and a chromaticity (C light source), and the measurement is performed at 1 nm intervals. Here, the transparent acrylic resin is an acrylic resin or a methacrylic resin having a light transmittance of 99% or more in the entire wavelength range of 300 nm or more and less than 1000 nm when a film with a film thickness of 1 μm is formed on glass. Examples of such a resin include a copolymer of benzyl methacrylate / methacrylic acid = 70 / 30 (molar ratio): polystyrene-converted weight average molecular weight of 30,000.

[0025] Furthermore, if it is possible to determine the necessary physical properties or characteristics, such as identifying maximum and minimum values, without being affected by other components, the colored composition film can be measured using a spectrometer under the above measurement conditions, and the concentration and film thickness can be determined by converting them according to the theoretical formula, assuming that they follow the Lambert-Beer law. In addition, other devices or measurement conditions may be used as long as they allow for measurements equivalent to those described above.

[0026] Furthermore, when the sample to be measured is laminated on a substrate and it is difficult to separate the colored composition film from the substrate, methods include first determining the light transmission spectrum or light absorption spectrum of the colored composition film while it is laminated on the substrate, then scraping off the colored composition film and determining the light transmission spectrum or light absorption spectrum of the substrate alone and taking the difference; first determining the light transmission spectrum or light absorption spectrum of the substrate alone, then forming the colored composition film on the substrate and determining the light transmission spectrum or light absorption spectrum and taking the difference; or placing the substrate on a reference optical path and determining the light transmission spectrum or light absorption spectrum of the colored composition film while it is laminated on the substrate. The same applies even if the substrate is made of multiple materials.

[0027] The coloring agent (A) used in the present invention satisfies formula (1) in the light transmission spectrum in the wavelength range of 430 to 580 nm.

[0028] 0.01 < T ５５０ / T ５２０ <0.95 Formula (1) Here, T Ａ This is the light transmittance at wavelength A nm. ５５０ / T ５２０ The lower limit is preferably 0.1 or higher, and the upper limit is preferably 0.9 or lower.

[0029] The coloring agent (A) used in the colored composition film of the present invention may be a single coloring agent or a mixture thereof. Examples of coloring agents used as coloring agent (A) include coloring agents prepared by mainly using blue coloring agents and green coloring agents consisting of the following pigments and dyes, with the addition of small amounts of purple coloring agents, yellow coloring agents and red coloring agents as needed. Preferably, as illustrated in the light transmission spectrum of Figure 1, T ５５０ / T ５２０ By using a coloring agent (coloring agent (A)) with a value between 0.10 and 0.90, the light transmittance in the blue to green wavelength range is high, and the spectrum exhibits a downward trend in light transmittance from 520 nm to 550 nm. As a result, the light transmittance in the green to long wavelength range, which is an extension of this trend, tends to remain very low overall.

[0030] T ５５０ / T ５２０ A value slightly above 0.01 is sufficient for practical purposes.

[0031] Furthermore, since the light transmission spectra of colorants are basically additive and some are available in databases, it can be said that excessive trial and error is not required when mixing and preparing multiple types of colorants to design the wavelength-light transmittance of the colorant (A). The following are examples of blue, green, and purple colorants that can be preferably used.

[0032] Examples of blue pigments include C.I. Pigment Blue 1, C.I. Pigment Blue 1:2, C.I. Pigment Blue 9, C.I. Pigment Blue 14, C.I. Pigment Blue 15, C.I. Pigment Blue 15:1, C.I. Pigment Blue 15:2, C.I. Pigment Blue 15:3, C.I. Pigment Blue 15:4, C.I. Pigment Blue 15:5, C.I. Pigment Blue 15:6, C.I. Pigment Blue 16, C.I. Pigment Blue 17, C.I. Pigment Blue 19, C.I. Pigment Blue 25, C.I. Pigment Blue 27, C.I. Pigment Blue 28, C.I. Pigment Blue 29, C. I. Pigment Blue 33, C. I. Pigment Blue 35, C. I. Pigment Blue 36, C. I. Pigment Blue 56, C. I. Pigment Blue 56:1, C. I. Pigment Blue 60, C. I. Pigment Blue 61, C. I. Pigment Blue 61:1, C. I. Pigment Blue 62, C. I. Pigment Blue 63, C. I. Pigment Blue 64, C. I. Pigment Blue 66, C. I. Pigment Blue 67, C. I. Pigment Blue 68, C. I. Pigment Blue 71, C. I. Pigment Blue 72, C. I. Pigment Blue 73, C. I. Pigment Blue 74, C.I. Pigment Blue 75, C.I. Pigment Blue 76, C.I. Pigment Blue 78, C.I. Pigment Blue 79 and C.I. Solvent Blue 5, C.I. Solvent Blue 25, C.I. Solvent Blue 38, C.I. Solvent Blue 44, C.I. Solvent Blue 45, C.I. Solvent Blue 64, C.I. Solvent Blue 67, C.I. Solvent Blue 70, C.I. Solvent Blue 122, C.I. Solvent Blue 129 and C.I. Acid Blue 7, C.I. Acid Blue 23, C.I. Acid Blue 25, C.I. Acid Blue 27, C.I. Acid Blue 35, C.I. Acid Blue 40, C.I. Acid Blue 41, C.I. Acid Blue 43, C.I. Acid Blue 45, C.I. Acid Blue 47, C.I. Acid Blue 49, C.I. Acid Blue 51, C.I. Acid Blue 53, C.I. Acid Blue 55, C.I. Acid Blue 56,C.I. Acid Blue 62, C.I. Acid Blue 68, C.I. Acid Blue 69, C.I. Acid Blue 78, C.I. Acid Blue 80, C.I. Acid Blue 81:1, C.I. Acid Blue 90, C.I. Acid Blue 104, C.I. Acid Blue 111, C.I. Acid Blue 112, C.I. Acid Blue 124, C.I. Acid Blue 127, C.I. Acid Blue 127:1, C.I. Acid Blue 138, C.I. Acid Blue 140, C.I. Acid Blue 150, C.I. Acid Blue 175, C.I. Acid Blue 215, C.I. Examples include Acid Blue 230, C.I. Acid Blue 244, C.I. Acid Blue 277, C.I. Acid Blue 344, C.I. Direct Blue 86, C.I. Direct Blue 87, C.I. Direct Blue 199, C.I. Reactive Blue 25, C.I. Mordant Blue 1, C.I. Mordant Blue 3, C.I. Mordant Blue 17, and C.I. Mordant Blue 29.

[0033] Examples of green pigments include C.I. Pigment Green 7, C.I. Pigment Green 36, C.I. Pigment Green 58, C.I. Pigment Green 59, C.I. Pigment Green 62, C.I. Pigment Green 63, C.I. Solvent Green 5, C.I. Solvent Green 7, C.I. Solvent Green 28, C.I. Solvent Green 34, C.I. Solvent Green 35, C.I. Acid Green 1, C.I. Acid Green 3, C.I. Acid Green 8, C.I. Acid Green 14, C.I. Acid Green 22, C.I. Acid Green 25, C.I. Acid Green 41, C.I. Acid Green 50, C. I. Acid Green 58, C. I. Acid Green 63, C. I. Acid Green 80, C. I. Acid Green 104, C. I. Acid Green 109, and C. I. Direct Green 25, C. I. Direct Green 27, C. I. Direct Green 31, C. I. Direct Green 32, C. I. Direct Green 34, C. I. Direct Green 37, C. I. Direct Green 63, C. I. Direct Green 72, C. I. Direct Green 77, C. I. Direct Green 79, C. I. Direct Green 82, and C. I. Mordant Green 1, C. I. Mordant Green 4, C. I. Mordant Green 10, C. I. Mordant Green 15, C. I. Examples include Mordant Green 21, C.I. Mordant Green 26, C.I. Mordant Green 33, C.I. Mordant Green 34, C.I. Mordant Green 35, C.I. Mordant Green 41, and C.I. Mordant Green 53.

[0034] Examples of purple pigments include C.I. Pigment Violet 14, C.I. Pigment Violet 19, C.I. Pigment Violet 23, C.I. Pigment Violet 29, C.I. Pigment Violet 30, C.I. Pigment Violet 32, C.I. Pigment Violet 33, C.I. Pigment Violet 36, C.I. Solvent Violet 2, C.I. Solvent Violet 8, C.I. Solvent Violet 9, C.I. Solvent Violet 11, C.I. Solvent Violet 14, C.I. Acid Violet 7, C.I. Acid Violet 9, C.I. Acid Violet 17, C.I. Acid Violet 19, and C.I. Direct Violet 47, C.I. Direct Violet 59, C.I. Direct Violet 79, C.I. Direct Violet 84, C.I. Direct Violet 96, C.I. Direct Violet 103, C.I. Direct Violet 104 and C.I. Mordant Violet 1, C.I. Mordant Violet 27, C.I. Mordant Violet 14, C.I. Mordant Violet 22, C.I. Mordant Violet 24, C.I. Mordant Violet 30, C.I. Mordant Violet 37, C.I. Mordant Violet 44, C.I. Mordant Violet 45, C.I. Mordant Violet 47, C.I. Mordant Violet 48, C.I. Examples include Mordant Violet 53 and C.I. Mordant Violet 58.

[0035] Furthermore, in embodiments that consider the chromaticity balance of the colored composition film, it is necessary to adjust the light transmittance in the red and yellow wavelength regions, so red and yellow pigments can also be used. Examples of red pigments include C.I. Pigment Red 122, C.I. Pigment Red 123, C.I. Pigment Red 144, C.I. Pigment Red 177, C.I. Pigment Red 179, C.I. Pigment Red 180, C.I. Pigment Red 215, C.I. Pigment Red 216, C.I. Pigment Red 217, C.I. Pigment Red 220, C.I. Pigment Red 254, C.I. Pigment Red 255, C.I. Pigment Red 256, C.I. Pigment Red 257, C. I. Pigment Red 264, C. I. Pigment Red 266, C. I. Pigment Red 267, C. I. Pigment Red 268, C. I. Pigment Red 269, C. I. Pigment Red 291, C. I. Solvent Red 45, C. I. Solvent Red 49, C. I. Solvent Red 125, C. I. Solvent Red 130, C. I. Acid Red 14, C. I. Acid Red 17, C. I. Acid Red 18, C. I. Acid Red 31, C. I. Direct Red 79, C. I. Direct Red 82, C. I. Direct Red 107, C. I. Direct Red 172, C. I. Examples include Direct Red 181, C.I. Direct Red 204, C.I. Direct Red 213, C.I. Direct Red 243, C.I. Direct Red 250, and C.I. Mordant Red 1, C.I. Mordant Red 18, C.I. Mordant Red 24, C.I. Mordant Red 30, C.I. Mordant Red 85, and C.I. Mordant Red 95.

[0036] Examples of yellow pigments include C.I. Pigment Yellow 24, C.I. Pigment Yellow 48, C.I. Pigment Yellow 83, C.I. Pigment Yellow 126, C.I. Pigment Yellow 127, C.I. Pigment Yellow 128, C.I. Pigment Yellow 129, C.I. Pigment Yellow 136, C.I. Pigment Yellow 138, C.I. Pigment Yellow 139, C.I. Pigment Yellow 142, C.I. Pigment Yellow 150, C.I. Pigment Yellow 158, C.I. Pigment Yellow 172, C.I. Pigment Yellow 180, C.I. Pigment Yellow 181, C.I. Pigment Yellow 182, C. I. Pigment Yellow 183, C. I. Pigment Yellow 184, C. I. Pigment Yellow 185, C. I. Pigment Yellow 188, C. I. Pigment Yellow 189, C. I. Pigment Yellow 190, C. I. Pigment Yellow 204, C. I. Pigment Yellow 218, C. I. Pigment Yellow 220, C. I. Pigment Yellow 221, C. I. Pigment Yellow 228, C. I. Solvent Yellow 5, C. I. Solvent Yellow 162, C. I. Acid Yellow 17, C. I. Acid Yellow 29, C. I. Acid Yellow 38, C. I. Acid Yellow 40, C. I. Acid Yellow 54, C. I. Acid Yellow 65, C.I. Acid Yellow 72, C.I. Acid Yellow 98, C.I. Acid Yellow 111, C.I. Acid Yellow 123, C.I. Acid Yellow 150, C.I. Acid Yellow 155, C.I. Acid Yellow 161, C.I. Acid Yellow 172, C.I. Acid Yellow 184, C.I. Acid Yellow 196, C.I. Acid Yellow 207, C.I. Acid Yellow 212, C.I. Acid Yellow 220, C.I. Acid Yellow 228, C.I. Acid Yellow 230, C.I. Acid Yellow 238, C.I. Acid Yellow 242, C.I. Acid Yellow 243, C.I. Acid Yellow 251, C.I. Direct Yellow 2, C.I. Direct Yellow 33, C.I. Direct Yellow 34, C.I. Direct Yellow 39, C.I. Direct Yellow 50,Examples include C.I. Direct Yellow 68, C.I. Direct Yellow 86, C.I. Direct Yellow 98, C.I. Direct Yellow 102, C.I. Direct Yellow 129, C.I. Direct Yellow 136, C.I. Direct Yellow 141, and C.I. Mordant Yellow 5, C.I. Mordant Yellow 10, C.I. Mordant Yellow 16, C.I. Mordant Yellow 26, C.I. Mordant Yellow 33, C.I. Mordant Yellow 42, C.I. Mordant Yellow 56, and C.I. Mordant Yellow 63.

[0037] Among these, one or more pigments selected from the group consisting of C.I. Pigment Blue 15, C.I. Pigment Blue 15:1, C.I. Pigment Blue 15:2, C.I. Pigment Blue 15:3, C.I. Pigment Blue 15:4, C.I. Pigment Blue 15:5, C.I. Pigment Blue 15:6, and C.I. Pigment Blue 16 as blue pigments, one or more pigments selected from the group consisting of C.I. Pigment Green 7, C.I. Pigment Green 36, C.I. Pigment Green 58, C.I. Pigment Green 59, C.I. Pigment Green 62, and C.I. Pigment Green 63 as green pigments, and C.I. Pigment Violet 14, C. One or more colorants selected from the group consisting of I. Pigment Violet 19, C. I. Pigment Violet 23, C. I. Pigment Violet 29, C. I. Pigment Violet 30, C. I. Pigment Violet 32, C. I. Pigment Violet 33, and C. I. Pigment Violet 36, and as yellow colorants, C. I. Acid Yellow 17, C. I. Acid Yellow 29, C. I. Acid Yellow 38, C. I. Acid Yellow 40, C. I. Acid Yellow 54, C. I. Acid Yellow 65, C. I. Acid Yellow 72, C. I. Acid Yellow 98, C. I. Acid Yellow 111, C. I. Acid Yellow 123, C. I. One or more colorants selected from the group consisting of Acid Yellow 150, C.I. Acid Yellow 155, C.I. Acid Yellow 161, C.I. Acid Yellow 172, C.I. Acid Yellow 184, C.I. Acid Yellow 185, C.I. Acid Yellow 188, C.I. Acid Yellow 196, C.I. Acid Yellow 207, C.I. Acid Yellow 212, C.I. Acid Yellow 220, C.I. Acid Yellow 228, C.I. Acid Yellow 230, C.I. Acid Yellow 238, C.I. Acid Yellow 242, C.I. Acid Yellow 243, C.I. Acid Yellow 251, and as a red colorant, C.I. Pigment Red 122, C. I. Pigment Red 123, C. I. Pigment Red 144, C. I. Pigment Red 177, C. I. Pigment Red 179,Preferably, one or more colorants selected from the group consisting of C.I. Pigment Red 180, C.I. Pigment Red 215, C.I. Pigment Red 216, C.I. Pigment Red 217, C.I. Pigment Red 220, C.I. Pigment Red 254, C.I. Pigment Red 255, C.I. Pigment Red 256, C.I. Pigment Red 257, C.I. Pigment Red 264, C.I. Pigment Red 266, C.I. Pigment Red 267, C.I. Pigment Red 268, C.I. Pigment Red 269, and C.I. Pigment Red 291 are used. These colorants are readily available and easy to disperse by adding solvents, etc., so colored compositions can be easily created simply by adding binders, etc.

[0038] More preferably, the blue colorant is one or more colorants selected from the group consisting of C.I. Pigment Blue 15:3, C.I. Pigment Blue 15:4, C.I. Pigment Blue 15:5, and C.I. Pigment Blue 15:6; the green colorant is one or more colorants selected from the group consisting of C.I. Pigment Green 7, C.I. Pigment Green 36, C.I. Pigment Green 58, and C.I. Pigment Green 59; the purple colorant is one or more colorants selected from the group consisting of C.I. Pigment Violet 23, C.I. Pigment Violet 29, C.I. Pigment Violet 33, and C.I. Pigment Violet 36; and the yellow colorant is C.I. Acid Yellow 123, C.I. Acid Yellow 138, and C. Preferably, one or more colorants selected from the group consisting of I. Acid Yellow 150, C. I. Acid Yellow 184, C. I. Acid Yellow 185, and C. I. Acid Yellow 188 are used as the colorants, and one or more colorants selected from the group consisting of C. I. Pigment Red 122, C. I. Pigment Red 177, C. I. Pigment Red 220, C. I. Pigment Red 254, C. I. Pigment Red 264, and C. I. Pigment Red 291 are used as the red colorants.

[0039] The coloring agent (A) may include at least one or both of a blue coloring agent and a green coloring agent, and optionally include at least one selected from the group consisting of a purple coloring agent, a yellow coloring agent, and a red coloring agent. In particular, an embodiment that includes both a blue coloring agent and a green coloring agent is preferred.

[0040] Preferably, when the total amount of blue and green pigments in the coloring agent (A) is 100 parts by weight, the content of purple pigment is 150 parts by weight or less, more preferably 50 parts by weight or less, when the coloring agent (A) contains purple pigment, the content of yellow pigment is 50 parts by weight or less, more preferably 30 parts by weight or less, when the coloring agent (A) contains yellow pigment, and the content of red pigment is 50 parts by weight or less, more preferably 30 parts by weight or less, when the coloring agent (A) contains red pigment.

[0041] Furthermore, when considering improvements in color purity and chromaticity balance, it is more preferable that the coloring agent (A) contains green colorants, blue colorants, purple colorants, and red colorants in the order of 3:2:1:1 by weight.

[0042] The coloring agent (A) may also appropriately contain other orange colorants such as C.I. Pigment Orange 13, C.I. Pigment Orange 36, C.I. Pigment Orange 38, C.I. Pigment Orange 43, C.I. Pigment Orange 51, C.I. Pigment Orange 55, C.I. Pigment Orange 59, C.I. Pigment Orange 61, C.I. Pigment Orange 64, C.I. Pigment Orange 65, and C.I. Pigment Orange 71, brown colorants such as C.I. Pigment Brown 28, and near-infrared transmitting colorants such as azomethine compounds, perylene compounds, bisbenzofuranone compounds, and azo compounds, for the purpose of fine-tuning the color.

[0043] Figure 1 shows an example of the light transmission spectrum of a coloring agent (A) used in the present invention. In the wavelength range of 430 to 580 nm, the solid line represents an example of the light transmission spectrum of a coloring agent (A) where the wavelength a1 at which the light transmittance is maximum is around 480 nm, the short dotted line represents an example of the light transmission spectrum of a coloring agent (A) where the wavelength a1 at which the light transmittance is maximum is around 430 nm, and the long dotted line represents an example of the light transmission spectrum of a coloring agent (A) where the wavelength a1 at which the light transmittance is maximum is around 520 nm. In all cases, the light transmittance at a wavelength of 550 nm is less than 0.95 times that at wavelengths of 460 nm and 520 nm.

[0044] The wavelength of pure green light is around 520 nm, and from the viewpoint of color purity, it is preferable to prepare a colored composition film so that the light transmittance is high only around this wavelength. Light at longer wavelengths of 550 nm or more is a factor that reduces the color purity of pure green light, so it is preferable that the light transmittance at 550 nm is lower than the light transmittance at 520 nm.

[0045] Furthermore, in the wavelength region between 520 nm and 460 nm, the light transmittance in this wavelength region is kept low because the colored composition film contains a specific wavelength-absorbing colorant (B). This improves the color purity of pure green light and pure blue light.

[0046] Furthermore, while wavelengths below 460 nm are in the violet wavelength range, they have a relatively small negative impact on the color purity of pure blue light. On the other hand, depending on the type of blue pigment used, the slight inclusion of purple can improve clarity.

[0047] Furthermore, the coloring agent (A) used in the present invention preferably has a maximum value of light transmittance within the wavelength range of 490 ± 50 nm in the wavelength region of 430 to 580 nm. In addition, when such a maximum value is present, it is preferable that the full width at half maximum of the peak (trough) containing the maximum value is 70 ± 20 nm. The wide full width at half maximum of the peak containing the maximum value, which is 70 ± 20 nm, and the combined use of the specific wavelength absorbing coloring agent (B), makes it easy to form two high light transmittance peaks in the colored composition film, around the wavelength of pure blue light (460 nm) and around the wavelength of pure green light (520 nm). In other words, the combination of the coloring agent (A) and the specific wavelength absorbing coloring agent (B) results in excellent color purity and excellent chromaticity balance. In other words, even if the coloring agent (A) is used alone, it is difficult to increase color purity because the difference in transmittance between the peak wavelength at which transmittance is maximum and the surrounding wavelengths cannot be widened. However, by using the specific wavelength absorbing coloring agent (B) in combination, the difference in transmittance between the peak wavelength at which transmittance is maximum and the surrounding wavelengths is widened, the full width at half maximum of the transmittance at the peak wavelength is narrowed, and color purity can be increased. Because the specific wavelength absorbing coloring agent (B) has a narrow absorption wavelength range and a narrow absorption peak with a narrow full width at half maximum, when expressed in a light transmission spectrum, it forms a V-shape with a wider tail near the baseline. Furthermore, for example, if only multiple specific wavelength absorbing coloring agents, including the specific wavelength absorbing coloring agent (B), are used without the coloring agent (A), similar to the first and second coloring agents in Patent Document 1, a large amount of light in wavelength regions other than high-purity blue, high-purity green, and high-purity red will be transmitted, reducing the color purity of transmitted blue, green, and red light. As a result, the color gamut becomes narrower and color reproduction becomes insufficient.

[0048] Furthermore, the coloring agent (A) used in the present invention preferably has a minimum value within the range of 580 ± 60 nm in the wavelength range of 420 to 640 nm. In addition, when such a minimum value is present, it is preferable that the full width at half maximum of the peak (trough) containing the minimum value is 80 ± 30 nm. Because the full width at half maximum of the peak (trough) containing the minimum value is wide at 80 ± 30 nm, the light transmittance in the wavelength range of 550 nm to 620 nm can be kept low, and an improvement in the color purity of not only pure blue light and pure green light, but also pure red light can be expected.

[0049] For example, in Figure 2, the solid line represents an example of colorant (A) where the light transmittance is maximum (maximum) around 490 nm and minimum (minimum) around 590 nm; the short dotted line represents an example of colorant (A) where the light transmittance is maximum (maximum) around 470 nm and minimum (minimum) around 590 nm; and the long dotted line represents an example of colorant (A) where the light transmittance is maximum (maximum) around 505 nm and minimum (minimum) around 580 nm. Note that the full width at half maximum is the peak width at half the transmittance value of the peak top of a certain peak. If the peak is a trough, it is calculated based on the depth of the trough.

[0050] By using such a coloring agent (A), it is possible to maintain a high light transmittance in the wavelength range from pure blue to green, while maintaining a low light transmittance in the wavelength range from longer wavelengths than green to shorter wavelengths than red. Furthermore, since the light transmittance increases from wavelengths near red to the red wavelength, in the embodiment where a red coloring agent is added, it is possible to maintain the color purity of red while maintaining the color density of red at a level comparable to that of blue to green. As a result, the light transmittance in the red wavelength range is also easily maintained at a level comparable to that of blue and green, making it easy to adjust to an achromatic film with high color purity and density for all three colors (blue, green, and red) and without disrupting the chromatic balance.

[0051] The colored composition film of the present invention comprises a specific wavelength absorbing colorant (B), and preferably also comprises a specific wavelength absorbing colorant (C) and a specific wavelength absorbing colorant (D).

[0052] The full width at half maximum of the absorption peak of a specific wavelength-absorbing colorant is preferably 10 to 40 nm.

[0053] In the present invention, the light transmission spectrum of a specific wavelength absorbing colorant is determined by the following measurement method ("Measurement Method 2").

[0054] <Measurement Method 2> A coloring agent composition with a solid content concentration of 20% by weight is prepared by dispersing a specific wavelength-absorbing colorant in a colorless, transparent acrylic resin solvent solution so that the concentration of the solid content of the colorant is 5% by weight. This coloring agent composition is then deposited on a glass substrate to a film thickness of 2.0 μm after solvent drying, and measured using a spectrometer (Otsuka Electronics Co., Ltd. microspectrometer "LCF-100MA" MCPD9800 spectrometer 3683C). The measurement conditions are: exposure time 30 msec, number of integrations 4 times, sensitivity Normal, chromaticity (C light source), and measurement is performed in 1 nm increments. Here, transparent acrylic resin refers to an acrylic resin or methacrylic resin that, when a film with a thickness of 1 μm is formed on glass, has a light transmittance of 99% or more in the entire wavelength range from 300 nm to less than 1000 nm. An example of such a resin is a copolymer of benzyl methacrylate / methacrylic acid = 70 / 30 (molar ratio) with a polystyrene-equivalent weight-average molecular weight of 30,000.

[0055] Furthermore, if it is possible to determine the necessary physical properties or characteristics, such as identifying maximum and minimum values, without being affected by other components, the colored composition film can be measured using a spectrometer under the above measurement conditions, and the concentration and film thickness can be determined by converting them according to the theoretical formula, assuming that they follow the Lambert-Beer law. In addition, other devices or measurement conditions may be used as long as they allow for measurements equivalent to those described above.

[0056] The specific wavelength absorbing colorant (B) in the present invention is a specific wavelength absorbing colorant that has a minimum value of light transmittance within the range of 490 ± 25 nm in a light transmission spectrum in the wavelength range specified in the special description, which is 430 to 580 nm, and has wavelengths in which the light transmittance is 50% or less within that wavelength range.

[0057] Examples of the specific wavelength absorbing colorant (B) include the compound of formula (1) or formula (2) below. Commercially available examples include FDB-006, FDB-007, and FDG-001 from Yamada Chemical Industries, Ltd., and VIS465A and VIS486C from QCR Solutions. The specific wavelength absorbing colorant (B) preferably has a light transmittance of 80% or more in wavelength ranges other than the wavelength range targeted by the specific wavelength absorbing colorant (i.e., in this case, the range of 490 ± 25 nm), and more preferably 85% or more. If the light transmittance in wavelength ranges other than the wavelength range targeted by the specific wavelength absorbing colorant is less than 80%, there is a concern that the light transmittance around 460 nm and 520 nm, which are wavelengths that should be transmitted as much as possible, will decrease.

[0058]

[0059] In equation (1), X is C-R ７ Or it is N. １ ~R ９ These groups may be the same or different, and are selected from hydrogen, alkyl group, cycloalkyl group, heterocyclic group, alkenyl group, cycloalkenyl group, alkynyl group, hydroxyl group, thiol group, alkoxy group, alkylthio group, aryl ether group, arylthioether group, aryl group, heteroaryl group, halogen, cyano group, aldehyde group, carbonyl group, carboxyl group, oxycarbonyl group, carbamoyl group, amino group, nitro group, silyl group, siloxanyl group, boryl group, and phosphine oxide group, and the selected group may form a fused ring or aliphatic ring with adjacent substituents.

[0060]

[0061] In formula (2), R １ R represents an alkyl fluoride which may have substituents, ２ R represents a linear, branched, or cyclic alkyl group which may have substituents. ３ and R ４ These are the same or different linear, branched, or cyclic alkyl groups, or optionally substituted aryl groups.

[0062] By including a coloring composition film containing a coloring agent (A) and a specific wavelength absorbing colorant (B), the light transmission spectrum, as shown in Figure 4, forms peaks c1 and c2 at wavelengths near the blue and green wavelengths, thereby improving the color purity of blue and green and widening the color reproduction range, thus improving color reproducibility.

[0063] The light transmission spectra shown in Figure 3 are examples of light transmission spectra of films of a specific wavelength absorbing colorant (B) that have a minimum wavelength within the range of 490 ± 25 nm in the wavelength range of 430 to 580 nm. The solid line represents an example of a specific wavelength absorbing colorant (B) that shows a minimum value of light transmittance around 490 nm, the short dotted line represents an example of a specific wavelength absorbing colorant (B) that shows a minimum value of light transmittance around 470 nm, and the long dotted line represents an example of a specific wavelength absorbing colorant (B) that shows a minimum value of light transmittance around 505 nm.

[0064] As the specific wavelength absorbing colorant (B), it is preferable to use one in which the full width at half maximum (FWHM) of the peak (trough) containing the minimum value located within the range of 490 ± 25 nm is 20 ± 15 nm. In particular, a specific wavelength absorbing colorant (B) that exhibits a narrow FWHM light transmission spectrum where the wavelength at which the light transmittance is minimized (or, if there are multiple minimum values, the minimum value with the smaller light transmittance) is around 490 nm, can specifically absorb only light that is a mixture of blue and green, thereby increasing the color density of blue and green light. Note that in the case of spectra with multiple minimum values, such as short dotted lines and long dotted lines, the FWHM should be calculated as the wavelength width (FWHM total width) obtained by halving the peak height of the light transmission spectrum at the wavelength with the smaller light transmittance minimum, without peak splitting.

[0065] This will be explained with reference to the drawings. By mixing a coloring agent (A) showing the light transmission spectrum of the solid line in Figure 2 and a specific wavelength absorbing coloring agent (B) showing the light absorption spectrum of the solid line in Figure 3 in an appropriate ratio, it is possible to form light transmittance peaks (c1, c2) in the wavelength region corresponding to blue and the wavelength region corresponding to green, as shown in Figure 4. In particular, when using a specific wavelength absorbing coloring agent (B) with a narrow full width at half maximum, the region that forms the base of the absorption peak becomes smaller, so absorption by the specific wavelength absorbing coloring agent (B) in the high-purity blue and green regions that overlap with part of the base region is suppressed, and as a result the light transmittance values ​​at peaks c1 and c2 in the high-purity blue and green regions become higher, further improving the transmittance of blue and green.

[0066] Furthermore, even when mixing a coloring agent (A) exhibiting a light transmission spectrum like the short dotted line in Figure 2 with a specific wavelength absorbing coloring agent (B) exhibiting a light transmission spectrum like the short dotted line in Figure 3 in an appropriate ratio, or when mixing a coloring agent (A) exhibiting a light transmission spectrum like the long dotted line in Figure 2 with a specific wavelength absorbing coloring agent (B) exhibiting a light transmission spectrum like the long dotted line in Figure 3 in an appropriate ratio, a film exhibiting a light transmission spectrum with two peaks similar to c1 and c2 in Figure 4 can be formed, although the peak wavelengths will be slightly shifted.

[0067] To avoid any misunderstanding, it should be noted that the colored composition film of the present invention contains a coloring agent (A) and a specific wavelength absorbing colorant (B). However, one embodiment of the present invention is one in which the layer containing the coloring agent (A) and the layer containing the specific wavelength absorbing colorant (B) are laminated as separate layers. In other words, it is understood to be an embodiment in which the coloring agent (A) and the specific wavelength absorbing colorant (B) are contained in a laminated colored composition film. In terms of optical function when using transmitted light, even such a laminated film can have the same effect as when the coloring agent (A) and the specific wavelength absorbing colorant (B) are contained in a single film.

[0068] However, the configuration in which the coloring agent (A) and the specific wavelength absorbing colorant (B) are contained in a single film is preferable from the viewpoint of productivity because it shortens the process. Furthermore, in the laminated configuration, the film thickness and colorant concentration of the upper layer formed later have a significant impact, and even slight variations in these can greatly affect the performance of the entire colored composition film. Therefore, from the viewpoint of quality control, the configuration in which the coloring agent (A) and the specific wavelength absorbing colorant (B) are contained in a single film is also preferable.

[0069] In the colored composition film of the present invention, it is preferable that the ratio (Wb / Wa) of the weight (Wb) of the specific wavelength absorbing colorant (B) contained in the colored composition film to the weight (Wa) of the colorant (A) is in the range of 0.2 to 5, that is, the amount of the specific wavelength absorbing colorant (B) contained in the colored composition film is in the range of 0.2 to 5 times the weight of the colorant (A).

[0070] If Wb / Wa is less than 0.2, the sharpness of the peaks appearing in the wavelength range including the wavelength corresponding to blue and the wavelength corresponding to green decreases, and if Wb / Wa exceeds 5, the light transmittance of pure blue and green tends to decrease. More preferably, (Wb / Wa) is in the range of 0.3 to 2. When Wb / Wa is between 0.3 and 2, not only color purity but also chromaticity balance, display quality, and flatness performance are improved.

[0071] Furthermore, it is preferable that the colored composition film of the present invention further contains either or both of the specific wavelength absorbing colorant (C) and the specific wavelength absorbing colorant (D).

[0072] By including an appropriate amount of specific wavelength-absorbing colorant (C), transmitted light with a muddy color that is a mixture of green and red is absorbed, further improving the color purity of green and red. Furthermore, by including an appropriate amount of specific wavelength-absorbing colorant (D), the color purity of blue is further improved.

[0073] Such specific wavelength absorbing colorants (C) and specific wavelength absorbing colorants (D) are not particularly limited as long as they are colorants having wavelengths at which the required light transmittance is minimized. For example, specific wavelength absorbing colorant (C) is a compound represented by the following formula (3), and specific wavelength absorbing colorant (D) is a compound represented by the following formula (4).

[0074] Examples of commercially available specific wavelength absorbing colorants (C) include FDG-004, FDG-005, FDG-006, FDG-007 from Yamada Chemical Industries, Ltd., and VIS564B, VIS580A, VIS588C from QCR Solutions. Examples of commercially available specific wavelength absorbing colorants (D) include FDU-001, FDU-004, FDB-001, and FDB-009 from Yamada Chemical Industries, Ltd.

[0075]

[0076] In formula (3), Z １ and Z ２ Z ３ and Z ４ Z ５ and Z ６ and Z ７ and Z ８ Each of these is independently a linear, branched, or cyclic alkyl group, a linear, branched, or cyclic alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or a hydrogen atom, and some or all of the hydrogen atoms of the alkyl group and the alkoxy group may be substituted with halogens, Z １ and Z ２ Z ３ and Z ４ Z ５ and Z ６ and Z ７ and Z ８ In each pair, the two substituents are distinct from each other. M is a hydrogen atom, a divalent metal atom, a trivalent or tetravalent substituted metal atom, or an oxy metal. A substituted metal atom is a metal atom that has been compounded with a substituent such as a halogen, as exemplified below.

[0077] Examples of divalent metal atoms represented by M include Cu, Zn, Fe, Co, Ni, Ru, Rh, Pd, Pt, Mn, Sn, Mg, Hg, Cd, Ba, Ti, Be, Ca, etc. Cu, Pd, Ni, or Co are particularly preferred.

[0078] Examples of trivalent substituted metal atoms include Al-F, Al-Cl, Al-Br, Al-I, Al(OH), Al(OA) [where A represents alkyl groups, phenyl groups, naphthyl groups, trialkylsilyl groups, dialkylalkoxysilyl groups and their derivatives], Ga-F, Ga-Cl, Ga-Br, Ga-I, In-F, InCl, In-Br, In-I, Tl-F, Tl-Cl, Tl-Br, Tl-I, Al-C ６ H ５ , Al-C ６ H ４ (CH ３ ), In-C ６ H ５ In-C ６ H ４ (CH ３ ), Mn(OH), Mn(OC ６ H ５ ), Mn[OSi(CH ３ ) ３ Examples include Fe-Cl, Ru-Cl, etc.

[0079] An example of a tetravalent substituted metal atom is CrCl ２ , SiF ２ , SiCl ２ , SiBr ２ , SiI ２ , SnF ２ , SnCl ２ , SnBr ２ , ZrCl ２ , GeF ２ , GeCl ２ , GeBr ２ , GeI ２ , TiF ２ , TiCl ２ ,TiBr ２ ,Si(OH) ２ , Sn(OH) ２ , Ge(OH) ２ , Zr(OH) ２ , Mn(OH) ２ ,TiA２ , CrA ２ , SiA ２ , SnA ２ , GeA ２ [However, A represents an alkyl group, a phenyl group, a naphthyl group, and its derivatives], Si(OA) ２ , Sn(OA) ２ , Ge(OA) ２ , Ti(OA) ２ , Cr(OA) ２ [However, A represents an alkyl group, a phenyl group, a naphthyl group, a trialkylsilyl group, a dialkylalkoxysilyl group, and its derivatives], Si(SA) ２ , Sn(SA) ２ , Ge(SA) ２ [However, A represents an alkyl group, a phenyl group, a naphthyl group, and its derivatives], etc. are exemplified.

[0080] Examples of metal oxides include VO, MnO, TiO, etc.

[0081]

[0082] In formula (4), R １ａ represents a cyano group, a nitro group, a trifluoromethyl group, a heterocyclic group, or -O-C(O)H, and R ２ａ represents a hydrogen atom, a cyano group, a nitro group, a trifluoromethyl group, a heterocyclic group, or -O-C(O)H. R ３ａ represents a hydrogen atom, a halogen atom, a cyano group, an optionally substituted alkyl group having 1 to 2 atoms, or an optionally substituted aryl group having 6 to 20 carbon atoms. R ４０２ａ represents an optionally substituted alkyl group having 1 to 20 carbon atoms, R ４０４ａ and R ４０５ａ may be the same or different and represent a hydrogen atom, an optionally substituted alkyl group having 1 to 20 carbon atoms, or an optionally substituted aryl group having 6 to 20 carbon atoms. R ４０４ａ , R ４０５ａ and R ４０４ａ and R ４０５ａ may form an optionally substituted 4- to 8-membered nitrogen-containing heterocycle with the nitrogen atom to which they are attached. R ４１３This represents an alkyl group having 1 to 20 carbon atoms, which may have substituents, or an aryl group having 6 to 20 carbon atoms, which may have substituents.

[0083] In this invention, in addition to the specific wavelength absorbing colorants listed above, there is no prejudice to the use of fluorescent dyes or luminescent dyes as specific wavelength absorbing colorants (B), specific wavelength absorbing colorant (C), and specific wavelength absorbing colorant (D).

[0084] When the colored composition film of the present invention contains the specific wavelength absorbing colorant (B), specific wavelength absorbing colorant (C), and specific wavelength absorbing colorant (D), the weight ratio of the specific wavelength absorbing colorant (B) (Wb), the weight of the specific wavelength absorbing colorant (C) (Wc), and the weight of the specific wavelength absorbing colorant (D) (Wd) preferably satisfies the following formula: Wb:Wc:Wd = 1.0:0.1 to 10.0:0.1 to 10.0.

[0085] Furthermore, since the colored composition film of the present invention binds the coloring agent (A) and the specific wavelength absorbing coloring agent (B), as well as the specific wavelength absorbing coloring agents (C) and (D) used as needed, and fixes them in the film, it is preferable that the colored composition, which is a precursor for obtaining the colored composition film of the present invention, contains a binder and a polymerizable compound.

[0086] The binder is not particularly limited and examples include acrylic resins, siloxane resins, epoxy resins, polyimide resins, urethane resins, urea resins, vinyl resins, melamine resins, polyamide resins, polyester resins, olefin resins, and cellulose resins. Furthermore, in order to impart photosensitivity and enable pattern formation by photolithography, the colored composition, which is a precursor for obtaining the colored composition film of the present invention, may contain a photosensitive agent.

[0087] These resins may contain two or more types. If the binder is opaque, it may affect the light transmission and reflection properties of the film of the present invention, so it is preferable to use a transparent one. Also, if the binder itself is colored, it may affect the color, so it is preferable to use a colorless one.

[0088] From this viewpoint, it is preferable to use an acrylic resin or a siloxane resin as the binder. Examples of acrylic resins include polymers of unsaturated carboxylic acids and copolymers of unsaturated carboxylic acids and other ethylenically unsaturated compounds. Among these, copolymers of unsaturated carboxylic acids and ethylenically unsaturated compounds are preferred. Examples of unsaturated carboxylic acids include acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, and vinylacetic acid.

[0089] Acrylic resins preferably have ethylenically unsaturated groups in their side chains, which can improve the sensitivity of the resin if it is photosensitive. Examples of ethylenically unsaturated groups include vinyl groups, allyl groups, acrylic groups, and methacrylic groups. Methods for introducing ethylenically unsaturated groups into the side chains of acrylic resins include adding ethylenically unsaturated compounds having epoxy groups, acrylic acid chloride, or methacrylic acid chloride to carboxyl groups or hydroxyl groups in the acrylic resin, or adding compounds having ethylenically unsaturated groups using isocyanates.

[0090] Examples of acrylic resins having ethylenically unsaturated groups in their side chains include "Cychromer" (registered trademark) P(ACA)Z250 (45% by weight solution of dipropylene glycol monomethyl ether) manufactured by Daicel Ornex Co., Ltd., "ADEKA Arcluz" WR301 (45% by weight solution of dipropylene glycol monomethyl ether) and KRX-3802 (45% by weight solution of dipropylene glycol monomethyl ether) manufactured by ADEKA Corporation, and alkali-soluble cardo resins.

[0091] Siloxane resins are intermediate substances between inorganic silica and organosilicon, synthesized by the hydrolysis and dehydration condensation of alkoxysilane compounds. They have the property of forming three-dimensional structures such as random structures and cage structures through siloxane bonds, and can easily form strong high-molecular-weight films. Specifically, siloxane resins have a molecular structure in which repeating units composed of two to four siloxane bonds are linked together, and functional groups such as alkyl groups, phenyl groups, aryl groups, amino groups, amide groups, carboxyl groups, carbonyl groups, ester alkyl groups, acryloyl groups, and methacryloyl groups are formed on the side chains.

[0092] Among these, silsesquioxane polymers are preferred because they contain repeating units composed of three or four siloxane bonds and have functional groups such as phenyl groups, aryl groups, acryloyl groups, and methacryloyl groups in their side chains, which allows for a higher crosslinking density after film formation and improves the degree of film hardening.

[0093] The method for producing siloxane resin is not particularly limited, but one example is to hydrolyze an alkoxysilane compound to replace the alkoxide with a hydroxyl group to silanolate it, and then polymerize and remove the silanolate hydroxyl group by a dehydration condensation reaction. Examples of alkoxysilane compounds include diphenyldimethoxysilane, diphenyldiethoxysilane, methylphenyldimethoxysilane, methylphenyldiethoxysilane, methylphenyldimethoxysilane, methylphenyldiethoxysilane, and phenyltrimethoxysilane.

[0094] The weight-average molecular weight of the binder resin is preferably 3,000 or more, and more preferably 9,000 or more, from the viewpoint of improving the strength of the cured film obtained by curing the colored composition. On the other hand, from the viewpoint of improving the stability of the colored composition film, it is preferably 200,000 or less, and more preferably 100,000 or less. The weight-average molecular weight referred to here is the standard polystyrene equivalent value measured by gel permeation chromatography.

[0095] In the colored composition film of the present invention, the binder resin content is preferably 1% by weight or more, and more preferably 5% by weight or more, of the total film weight, from the viewpoint of improving the developability of the colored composition film when photosensitive properties are imparted. On the other hand, from the viewpoint of further improving color purity, it is preferably 99% by weight or less, and more preferably 95% by weight or less, of the solid content.

[0096] Furthermore, the colored composition film of the present invention or the colored composition that is a precursor of the colored composition film may contain a cured product of a polymerizable compound. Preferably used polymerizable compounds include compounds having an ethylenically unsaturated bond, such as unsaturated alkyl carboxylates such as methyl acrylate, methyl methacrylate, ethyl acrylate, and ethyl benzyl methacrylate; aromatic vinyl compounds such as styrene and methylstyrene; unsaturated aminoalkyl carboxylates such as aminoethyl acrylate; unsaturated glycidyl carboxylates such as glycidyl acrylate and glycidyl methacrylate; vinyl carboxylates such as vinyl acetate and vinyl propionate; vinyl cyanide compounds such as acrylonitrile, methacrylonitrile, and α-chloroacrylonitrile; aliphatic conjugated dienes such as 1,3-butadiene and isoprene; and macromonomers having an acryloyl group or methacryloyl group at the terminal, such as polystyrene, polymethyl acrylate, polymethyl methacrylate, polybutyl acrylate, polybutyl methacrylate, and polysilicone.

[0097] The colored composition film of the present invention may be used alone, but it can also be formed on another substrate and used as a sheet. For example, as shown in Figure 6, the colored composition film of the present invention can be formed on a substrate 50 to form a sheet 110. In particular, when the thickness of the colored composition film is less than 50 μm, the film alone often lacks rigidity and becomes difficult to handle, so using a substrate compensates for the lack of rigidity of the film.

[0098] The colored composition film of the present invention may be a single layer or a multilayer film consisting of multiple layers. In the case of a multilayer film consisting of multiple layers, the colorants contained may be contained in separate layers. That is, in the case of a multilayer film consisting of multiple layers, the multilayer film is the colored composition film of the present invention. For example, as shown in Figure 5, an example is given in which the first layer contains only a specific wavelength absorbing colorant (B), the second layer contains a yellow colorant and a blue colorant, the third layer contains only a red colorant, and the fourth layer contains a purple colorant, a specific wavelength absorbing colorant (C), and a specific wavelength absorbing colorant (D).

[0099] Furthermore, if the colored composition film of the present invention is a laminated film consisting of multiple layers, the content of each colorant as shown above is determined as the amount of each colorant contained in the entire laminated film, and the content ratio of each colorant is determined as the ratio of the content of each colorant to the total amount of colorants contained in the entire laminated film, which is set at 100% by weight.

[0100] When the binder of the colored composition film of the present invention is a thermoplastic resin, the binder content is 80% by weight or more of the total weight of the entire film, the colored composition is heated to a liquid fluid state, and the film is formed without using a substrate by extrusion molding with a T-die or calendering.

[0101] When the colored composition film of the present invention is provided on a substrate, the substrate used may be transparent or opaque, and if an opaque substrate is used, it may be a substrate that can be peeled off later. A transparent substrate refers to a substrate that has sufficient transparency to measure the light transmittance of the film of the present invention using the substrate as a reference, and specifically refers to a substrate in which the total light transmittance is 80% or more when measured by the method specified in JIS K 7375:2008.

[0102] If the substrate is opaque and it is difficult to measure the light transmittance of the film of the present invention when the substrate is composited, a transparent substrate can be prepared separately, the colored composition film of the present invention can be transferred onto it and measured on the sheet after transfer, or the colored composition film can be replicated on a separately prepared transparent substrate and the light transmittance can be measured.

[0103] The material of the aforementioned substrate is not particularly limited and may be plastic film, paper, metal plate, ceramic sheet, etc. Alternatively, it may be a substrate made by laminating these materials.

[0104] When using plastic film as the base material, examples of resin films include polyester, polyvinyl chloride, polypropylene, polyethylene, acrylic, urethane, polycarbonate, polyamide, polystyrene, acrylonitrile butadiene styrene copolymer, polyvinyl alcohol, cycloolefin, and polyimide.

[0105] When paper is used as the base material, it may be cellulose or synthetic paper. When metal plates are used as the base material, examples include iron plates, copper plates, aluminum foil, and nickel foil. When ceramic sheets are used as the base material, examples include soda glass plates, alkali-free glass plates, alumina boards, zirconia sheets, aluminum nitride sheets, and silicon nitride sheets.

[0106] The thickness of the substrate is not particularly limited, but it is preferably 10 μm to 2 mm in thickness, as it has appropriate rigidity and bending resistance and is easy to handle. Alternatively, another layer 60 may be formed between the colored composition film 100 of the present invention and the substrate (see Figure 6(a)), or another layer 60 may be formed on the surface of the substrate 50 opposite to the surface on which the colored composition film 100 is provided (see Figure 6(b)). Another layer 60 may also be formed as a layer covering the colored composition film 100 formed on the substrate 50 (see Figure 6(c)).

[0107] Examples of the aforementioned other layers include a water vapor barrier layer to prevent the display from deteriorating due to moisture, an anti-reflective layer to prevent reflection of external light, an anchor layer to improve interlayer adhesion, an ultraviolet cut layer to prevent deterioration of the coloring material (A) and specific wavelength absorbing coloring material (B) contained in the colored composition film of the present invention due to ultraviolet light, and a hard coat layer to prevent scratches on the colored composition film of the present invention.

[0108] The colored composition film of the present invention can be applied to the surface of various displays 70 such as organic EL, liquid crystal, micro-LED, plasma display, CRT, and laser display (see Figure 7) to enhance the vibrancy of the display's colors, improve its durability, and reduce the influence of external light as a visible light transmission adjustment material. However, the application is not limited to the configuration shown in Figure 7, and can be applied to any product other than this configuration, as long as it fulfills even a small part of the effects and functions of the present invention. One example of application is direct deposition on organic EL, liquid crystal, micro-LED, plasma display, CRT, and laser display as described above. For example, when directly deposition on an organic EL, it can be applied by directly coating it onto an organic EL element on top of a transparent ultraviolet-curable resin layer, a encapsulant layer, or an insulating layer such as SiN.

[0109] Next, a method for forming a colored composition film of the present invention will be described. The method for forming a colored composition film of the present invention is not particularly limited, but for example, when forming a thin film of several tens of micrometers or less, one method is to prepare a colored composition in a coating liquid state containing an organic solvent, apply the colored composition to a substrate to form a coating film, and then dry it to scatter the organic solvent.

[0110] Methods for applying the colored composition onto a substrate include general printing methods such as gravure, offset, and screen printing, as well as die coating, slit coating, slit die coating, gravure coating, reverse coating, dipping, inkjet printing, and spray painting. Methods for drying the composition include ovens and hot plates. In particular, vacuum drying is preferred to improve drying efficiency.

[0111] For example, a colored composition can be manufactured by adding a dispersant and an organic solvent to a colorant (A) or a specific wavelength absorbing colorant (B), dispersing them using a disperser to prepare a dispersion containing the colorant (A) or the specific wavelength absorbing colorant (B), and then adding a binder and, if necessary, other components such as the aforementioned additives, mixing and stirring the mixture.

[0112] The coloring composition may further contain additives such as adhesion improvers, surfactants, dispersants, reactive diluents, photopolymerization initiators, chain transfer agents, sensitizers, and polymerization inhibitors.

[0113] Examples of dispersers used to prepare pigment dispersions include sand mills, ball mills, bead mills, three-roll mills, and attritors. Among these, bead mills are preferred due to their superior dispersion efficiency. Examples of dispersion beads used in bead mills include zirconia beads, alumina beads, and glass beads. Among these, zirconia beads are preferred.

[0114] Preferably, the dispersant has a color affinity portion that has the property of adsorbing to the colorant (A) or specific wavelength absorbing colorant (B), and a portion that is compatible with the carrier of the colorant (A) or specific wavelength absorbing colorant (B), and functions to stabilize the dispersion of the colorant (A) or specific wavelength absorbing colorant (B) on the carrier by adsorbing to the colorant (A) or specific wavelength absorbing colorant (B). Examples of such commercially available dispersants include DisperBYK from BIC Chemie Japan, SOLSPERSE from Lubrizol Japan, EFKA and Efka from BASF, and Ajisper from Ajinomoto Fine Techno. Two or more of these may be included. Preferably, the dispersant content is 0.01% by weight or more and 10% by weight or less, when the total weight of the entire colored composition film is 100% by weight. The inclusion of a dispersant in the colored composition can improve dispersion stability.

[0115] Examples of organic solvents include acetate solvents, (poly)alkylene glycol ether solvents, aliphatic ester solvents, aliphatic alcohol solvents, ketone solvents, and hydrocarbon solvents. The inclusion of organic solvents in the coloring composition provides suitable flow properties for coating onto a substrate. Two or more of these solvents may be included. Among these, acetate solvents are preferred as the main solvent from the viewpoint of pigment stability, and it is even more preferable to include (poly)alkylene glycol ether solvents in the organic solvent at a concentration of 30% by weight or less from the viewpoint of solubility.

[0116] Alternatively, a reactive diluent may be used instead of an organic solvent. Examples of reactive diluents include aliphatic alcohols and alkylphenol glycidyl ethers. From the viewpoint of improving coatability, the content of the organic solvent or reactive diluent in the colored composition is preferably 40% by weight or more, and more preferably 50% by weight or more. On the other hand, from the viewpoint of improving drying characteristics, it is preferably 95% by weight or less, and more preferably 90% by weight or less.

[0117] Examples of adhesion-improving agents include silane coupling agents such as vinyltrimethoxysilane and vinyltriethoxysilane. Two or more of these may be included. The inclusion of an adhesion-improving agent in the coloring composition can improve the adhesion of the coating film made of the coloring composition to the substrate. From the viewpoint of improving compatibility, the content of the adhesion-improving agent in the coloring composition is preferably 10% by weight or less, and more preferably 5% by weight or less, of the solid content.

[0118] Examples of surfactants include anionic surfactants such as ammonium lauryl sulfate, cationic surfactants such as stearylamine acetate, amphoteric surfactants such as lauryldimethylamine oxide, and nonionic surfactants such as polyoxyethylene lauryl ether. Two or more of these may be included. The inclusion of surfactants in the coloring composition can improve the applicability of the coloring composition and the surface smoothness of the coating film made from the coloring composition. From the viewpoint of improving applicability and the surface smoothness of the coating film, the surfactant content in the coloring composition is preferably 0.001% by weight or more. On the other hand, from the viewpoint of improving applicability, it is preferably 1% by weight or less.

[0119] Examples of photopolymerization initiators include inorganic photopolymerization initiators such as benzophenone compounds, acetophenone compounds, anthraquinone compounds, imidazole compounds, benzothiazole compounds, benzoxazole compounds, oxime ester compounds, triazine compounds, phosphorus compounds, and titanates. Commercially available products include "Irgacure" (registered trademark) 369 (2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone), 379 (2-(dimethylamino)-2-[(4-methylphenyl)methyl]-1-[4-(4-morpholinyl)phenyl]-1-butanone), OXE01 (1-[4-(phenylthio)-2-(O-benzoyloxime)]), OXE03 (1-(O-acetyloxime), OXE04), "Adeka Arcluz" (registered trademark) NCI-930, NCI-831, and N-1919. Among these, oxime esters are chosen for their high sensitivity. A photopolymerization initiator is preferred, and NCI-831 is preferred from the standpoint of suppressing brightness reduction during oxygen blockage. The content of the photopolymerization initiator in the colored composition of the present invention is preferably 0.1% by weight or more, and more preferably 1% by weight or more, of the solid content from the viewpoint of suppressing surface roughness during development. On the other hand, from the viewpoint of compatibility, it is preferably 10% by weight or less, and more preferably 5% by weight or less, of the solid content. Furthermore, sensitivity can be improved by including a chain transfer agent and / or a sensitizer. Examples of commercially available chain transfer agents include "Karenz" (registered trademark) MTPE-1 (pentaerythritol tetrakis(3-mercaptopropionate)), and the same MT Examples include mercapto compounds such as NR-1 (1,3,5-tris(3-mercaptobutyloxyethyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione)) and MTBD-1 (1,4-bis(3-mercaptobutyryloxy)butane). Two or more of these may be included. From the viewpoint of improving compatibility with the binder, the content of the chain transfer agent in the colored composition of the invention is preferably 10% by weight or less of the solid content.

[0120] Examples of commercially available sensitizers include "KAYACRE" (registered trademark) (2,4-diethylthioxanthene-9-one). The sensitizer content in the colored composition of the present invention is preferably 10% by weight or less, and more preferably 3% by weight or less, based on the solid content.

[0121] Examples of polymerization inhibitors include hydroquinone, tert-butylhydroquinone, 2,5-bis(1,1,3,3-tetramethylbutyl)hydroquinone, 2,5-bis(1,1-dimethylbutyl)hydroquinone, catechol, and tert-butylcatechol. Two or more of these may be included. The inclusion of polymerization inhibitors in the colored composition can improve its stability. From the viewpoint of improving stability, the content of polymerization inhibitors in the colored composition is preferably 0.0001% by weight or more, and more preferably 0.005% by weight or more, of the solid content. On the other hand, from the viewpoint of improving sensitivity, it is preferably 1% by weight or less, and more preferably 0.5% by weight or less, of the solid content.

[0122] (Preparation of Colored Compositions 1 to 30) A dispersion was prepared by mixing a colorant, specific wavelength absorbing colorant (B), specific wavelength absorbing colorant (C), specific wavelength absorbing colorant (D), dispersant, and organic solvent in the compositions shown in the table. To this dispersion, a binder, reactive monomer, polymerization initiator, surfactant, organic solvent, and reactive diluent were added in the compositions shown in the table, and after thorough mixing, the mixture was filtered to obtain colored compositions with the compositions shown in Tables 1 to 8. Note that the amount of organic solvent shown in the table is the total amount.

[0123] On the other hand, the transmission spectra of the colorants corresponding to each coloring composition were obtained using the measurement method 1 described above. The characteristics of each colorant were evaluated from the obtained spectra as follows. The evaluation results are shown in the table. [T ５５０ / T ５２０ ]: The calculation was performed using the light transmittance values ​​at wavelengths of 550 nm and 520 nm in the light transmission spectrum in the wavelength range of 430 to 580 nm. The colorant that satisfies the following formula (1) was defined as colorant (A). 0.01 < T ５５０ / T ５２０ <0.95 Formula (1) (Here, T Ａ(A is a number) is the light transmittance at wavelength A nm.) [Minimum range]: In the light transmission spectrum in the wavelength range of 420 to 640 nm, X is defined as having a minimum value of light transmittance within the wavelength range of 580 ± 60 nm, and Y is defined as not having a minimum value in the wavelength range of 580 ± 60 nm or not having a minimum value. [Minimum FWHM]: In the light transmission spectrum in the wavelength range of 420 to 640 nm, X is defined as having a minimum value of light transmittance within the wavelength range of 580 ± 60 nm and the FWHM of the peak (trough) containing the minimum value being within the range of 80 ± 30 nm, and Y is defined as all other cases. [Maximum range]: In the light transmission spectrum in the wavelength range of 430 to 580 nm, X is defined as having a maximum value of light transmittance within the wavelength range of 490 ± 50 nm, and Y is defined as not having a maximum value in the wavelength range of 490 ± 50 nm or not having a maximum value. [Maximum HW]: In the light transmission spectrum in the wavelength range of 430 to 580 nm, X was defined as having a maximum value of light transmittance within the wavelength range of 490 ± 50 nm, and the HW of the peak containing the maximum value being within the range of 70 ± 20 nm; all other cases were defined as Y.

[0124] Furthermore, in each table, FDB-006 is FDB-006, a dye manufactured by Yamada Chemical Industries Co., Ltd., FDB-007 is FDB-007, a dye manufactured by Yamada Chemical Industries Co., Ltd., FDG-001 is FDG-001, a dye manufactured by Yamada Chemical Industries Co., Ltd., FDG-006 is FDG-006, a dye manufactured by Yamada Chemical Industries Co., Ltd., PD-311S is PD-311S, a dye manufactured by Yamamoto Kasei Co., Ltd., FDG-007 is FDG-007, a dye manufactured by Yamada Chemical Industries Co., Ltd., and FDU-001 is FDU-001, a dye manufactured by Yamada Chemical Industries Co., Ltd.

[0125] Furthermore, regarding the specific wavelength absorbing colorants, the results of measurements using the above measurement method 2 showed that the absorption peak wavelengths (the peak top wavelengths are shown below) and the full width at half maximum of the peaks were FDB-006 (481 nm: 56 nm), FDB-007 (493 nm: 30 nm), FDG-001 (503 nm: 65 nm), FDG-006 (585 nm: 35 nm), FDG-007 (594 nm: 23 nm), PD-311S (588 nm: 29 nm), and FDU-001 (400 nm: 35 nm), respectively. In addition, the transmittance at the target wavelengths of the specific wavelength absorbing colorants was 40% or less for all of them, and the transmittance at wavelengths outside the target wavelength range of the specific wavelength absorbing colorants was 95% or more for all of them. Based on the above, FDB-006, FDB-007, and FDG-001 are classified as specific wavelength absorbing colorants (B), FDG-006, FDG-007, and PD-311S are classified as specific wavelength absorbing colorants (C), and FDU-001 is classified as a specific wavelength absorbing colorant (D).

[0126] Furthermore, in each table, PR is an abbreviation for "C.I. Pigment Red," PB for "C.I. Pigment Blue," PY for "C.I. Pigment Yellow," and PV for "C.I. Pigment Violet." Also, BZMA is benzyl methacrylate manufactured by Tokyo Chemical Industries, Ltd., MAA is methacrylic acid manufactured by Mitsubishi Gas Chemical Company, Inc., BYK167 is DISPERBYK-167 manufactured by BIC Chemie Japan, DPHA is dipentaerythritol hexaacrylate manufactured by Daicel Ornex Co., Ltd., and Omnirad 907 is IGM Resins B.V. The following terms refer to the following products: former Irgacre 907 and F477 manufactured by the company; F477 is F477 manufactured by DIK Corporation; PGMEA is propylene glycol monomethyl ether acetate manufactured by Hayashi Pure Chemical Industries; EEP is ethyl 3-ethoxypropionate manufactured by Shinko Organic Chemicals Co., Ltd.; and YED811 is an alkyl monoglycidyl ether-based reactive diluent YED811 manufactured by Mitsubishi Chemical Corporation.

[0127] (Fabrication of organic EL elements for evaluation) After fabricating a TFT substrate with a bank frame formed on it, a buffer film (PEDT: poly(3,4)ethylenedioxythiophene / polystyrene sulfonic acid (manufactured by Starckvitec, trade name: Baytron PCH8000)) was formed to a thickness of 0.1 μm using an inkjet printer. Next, using an inkjet printer, red phosphor ink (LUMATION RP-221 (manufactured by Sametion Co., Ltd.)) was used for the red pixels, green phosphor ink (LUMATION GP-1200 (manufactured by Sametion Co., Ltd.)) was used for the green pixels, and blue phosphor ink (LUMATION) was used for the blue pixels. After filling the corresponding cells with BP-105 (manufactured by Sametion Co., Ltd.), the solvent was removed to form a phosphor layer. After thoroughly removing the solvent in a vacuum, an inkjet printer was used to fill the charge implantation layer (IL40), the solvent was dried and removed, a high-purity Al-Mg film was deposited as a cathode, and then a silicon nitride film was formed by CVD to obtain an organic EL element.

[0128] (Examples 1-19, 22-23, and Comparative Examples 1-8) Compositions 1-19 and 22-30 were applied to the substrates shown in Tables 9-11 and 13 using a die coater, as shown in each table, and dried in an oven set to 90°C for 10 minutes to remove the solvent. The binder was then cured by exposure to an ultraviolet irradiation machine to obtain sheets with a colored composition film formed on the substrate surface.

[0129] Next, a transparent encapsulant was applied to the prepared evaluation organic EL element using a spin coater to cover the element surface with the encapsulant. Then, the sheets of Examples 1 to 19, Examples 22 to 23, and Comparative Examples 1 to 8 were attached to further cover the encapsulant surface. The colored composition film was then cured by irradiating it with ultraviolet light, and the colored composition film was fixed to the organic EL element.

[0130] (Example 20) A transparent encapsulant was applied to the prepared organic EL element for evaluation using a spin coater to cover the element surface with the encapsulant. Then, the colored composition 20 shown in Table 7 was applied to further cover the coated encapsulant surface, and then cured by irradiation with ultraviolet light to fix the colored composition film to the encapsulant surface of the organic EL element.

[0131] (Example 21) The colored composition 21 shown in Table 7 was placed in a hopper and heated to a temperature above the melting point of the binder in the colored composition 21 to melt it. The molten colored composition 21 was extruded towards a T-die whose lip opening was controlled so that the thickness of the colored composition film was the thickness shown in Table 12. The molten colored composition film was cooled with a cooling roll, the solidified colored composition film was taken up and transported to a winding machine to obtain the colored composition film of Example 21 in the form of a winding roll sheet.

[0132] Next, a transparent encapsulant was applied to the prepared evaluation organic EL element using a spin coater to cover the element surface with the encapsulant. Then, the colored composition film of Example 21 was applied to further cover the surface of the encapsulant, and the colored composition film was cured by irradiating it with ultraviolet light to fix the colored composition film to the organic EL element.

[0133] (Color Purity) For each example of the colored composition film, a C light source was used as the light source, and the transmission spectrum from 380 to 780 nm was measured using the LCF-100MA" microspectroscopy analyzer manufactured by Otsuka Electronics Co., Ltd. From the obtained transmission spectra, the wavelengths of blue, green, and red were determined, respectively, by λ. Ｂｌｕｅ , λ Ｇｒｅｅｎ , λ Ｒｅｄ As such, the color purity of blue is λ Ｂｌｕｅ = The full width at half maximum of the peak containing the wavelength of 460 nm, and the color purity of green is λ Ｇｒｅｅｎ = The full width at half maximum of the peak containing the wavelength of 520 nm; the color purity of red is λ ＲｅｄThe evaluation was performed using the full width at half maximum (FWHM) of the peak containing the wavelength of 630 nm. The full width at half maximum (FWHM) of each peak was calculated as the peak width at half the transmittance value (I-half) of the peak top containing the aforementioned wavelength, i.e., the difference between the long-wavelength and short-wavelength sides of the peak at transmittance I-half. If the peak separation was insufficient, the peaks were separated by peak fitting using approximation formulas based on Gaussian or Lorentz functions, and the FWHM was calculated. In the evaluation of the red peaks, if the peak trailed into the infrared region and the long-wavelength side at I-half exceeded 780 nm, the long-wavelength side at I-half was set to 780 nm. The obtained peak full width at half maximum (FWHM) values ​​were defined as follows: blue = "Peak FWHM (B)", green = "Peak FWHM (G)", and red = "Peak FWHM (R)". The color purity of each color was evaluated based on the following criteria, with A being the best. The highest-rated color purity among B, G, and R was evaluated as the color purity of the colored composition film. A color purity of H or higher was considered acceptable. A smaller FWHM indicates higher color purity.

[0134] Furthermore, the wavelength of the peak top in the peak corresponding to each color is the λ. Ｂｌｕｅ , λ Ｇｒｅｅｎ , λ ＲｅｄIf there is a discrepancy when compared to the above, it is difficult to simply compare color purity using only the full width at half maximum (FWHM). Therefore, the spectrum is divided into blue (450-495 nm), green (495-570 nm), and red (620-750 nm). The spectrum is analyzed using chromaticity calculation software to determine the chromaticity coordinates (x, y) in the xyz color system, and the color purity can be evaluated by comparing the values ​​of x and y. In other words, for blue, the smaller y value, for green, the larger y value, and for red, the larger x value, the higher the color purity. [Color Purity B] Peak FWHM (B) was evaluated according to the following evaluation criteria: A: 30 nm or less. B: Greater than 30 nm and 35 nm or less. C: Greater than 35 nm and 40 nm or less. D: Greater than 40 nm and 45 nm or less. E: Greater than 45 nm and 50 nm or less. F: Greater than 50 nm and 55 nm or less. G: Greater than 55 nm and 60 nm or less. H: Greater than 60 nm and 75 nm or less. I: Greater than 75 nm and 90 nm or less. J: Greater than 90 nm and 95 nm or less. K: Greater than 95 nm and 100 nm or less. L: Greater than 105 nm. [Color Purity G] Peak half-width (G) was evaluated according to the following criteria: A: 40 nm or less. B: Greater than 40 nm and 45 nm or less. C: Greater than 45 nm and 50 nm or less. D: Greater than 50 nm and 55 nm or less. E: Greater than 55 nm and 60 nm or less. F: Greater than 60 nm and 65 nm or less. G: Greater than 65 nm and 70 nm or less. H: Greater than 70 nm and 85 nm or less. I: Greater than 95 nm and 100 nm or less. J: Greater than 100 nm and 105 nm or less. K: Greater than 105 nm and 110 nm or less. L: Greater than 110 nm. [Color Purity R] Peak half-width (R) was evaluated according to the following criteria: A: 180 nm or less. B: Greater than 180 nm and 185 nm or less. C: Greater than 185 nm and 190 nm or less. D: Greater than 190 nm and 195 nm or less. E: Greater than 195 nm and 200 nm or less. F: Greater than 200 nm and 205 nm or less. G: Greater than 205 nm and 210 nm or less. H: Greater than 210 nm and 215 nm or less. I: Greater than 215 nm and 220 nm or less. J: Greater than 220 nm and 225 nm or less. K: Greater than 225 nm.

[0135] (Chromatic balance) Average value of light transmittance at wavelengths of 460 nm, 520 nm, and 640 nm (T ＡＶＥ ) is determined, and the maximum value (T) among these light transmittances is also determined. ＭＡＸ ) and minimum value (T ＭＩＮ ) was sought. | T ＭＡＸ -T ＡＶＥ | and | T ＡＶＥ -T ＭＩＮ The larger the value of |, the color difference was used. Color differences within the range of 3% or less were classified as A, those between 3% and 5% as B, those between 5% and 10% as C, those between 10% and 15% as D, those between 15% and 20% as E, those between 29% and 25% as F, those between 25% and 30% as G, and those exceeding 30% as H. Color differences of F or higher were judged as good. A color difference closer to 0% indicates a more neutral color tone.

[0136] (Display Quality) Display quality was evaluated as follows by assessing the surface color of the organic EL element before illumination, the color of each RGB color image displayed after illumination, and the vividness of the colors when the organic EL was illuminated and a demo image of fruit was displayed, with a colored composition film bonded to the organic EL element. A is the best. E and above were judged as good, and F, G, and H were judged as within acceptable limits. A: The surface color before illumination is neutral, and the brightness and vividness after illumination are high, resulting in a natural and beautiful image. B: Inferior to A, but the surface color before illumination is neutral, and the brightness and vividness after illumination are high, resulting in a natural and beautiful image. C: Inferior to B, but the surface color before illumination is sufficiently neutral, and the brightness and vividness after illumination are relatively high, resulting in a natural and beautiful image. D: Inferior to C, but the surface color before illumination is sufficiently neutral, and the brightness and vividness after illumination are relatively high, resulting in a natural and beautiful image. E: Inferior to D, but the surface color before illumination is close to neutral, and the brightness and vividness after illumination are relatively high, resulting in a beautiful image. F: Inferior to E, but the surface color before illumination is close to neutral, and the brightness and vividness after illumination are slightly high, resulting in a beautiful image. G: Inferior to F, but the surface color before illumination is close to neutral, and the brightness and vividness after illumination are acceptable, resulting in a sufficiently beautiful image. H: Inferior to G, but the surface color before illumination is close to neutral, and the brightness and vividness after illumination are acceptable, resulting in a somewhat beautiful image. I: The surface color before illumination is not neutral, and the brightness and vividness after illumination are insufficient. J: Inferior to I, the surface color before illumination is not neutral, and the brightness and vividness after illumination are insufficient. K: Inferior to J, the surface color before illumination is not neutral, and the brightness and vividness after illumination are poor.

[0137] (Flatness) A pattern measuring 400 μm vertically, 40 μm horizontally, and with a film thickness of 1.5 μm was formed on a glass substrate using a transparent sealant. A colored composition was applied to cover the sealant pattern and to a dry film thickness of 2.5 μm at a location 200 μm away from the edge of the pattern. The mixture was dried at 90°C for 10 minutes. The height H of the overlapping portion of the transparent sealant onto the pattern was measured using a Keyence VK-9710 laser microscope to evaluate flatness (see Figure 8. In Figure 8, another layer 60 corresponds to the sealant pattern formed on the glass substrate). A smaller height H indicates better flatness, with A being judged as particularly good. A: Flatness is particularly good with a height H of the overlapping portion onto the pattern of 1 μm or less. B: Flatness is acceptable with a height H of the overlapping portion onto the pattern greater than 1 μm and 2 μm or less.

[0138]

[0139]

[0140]

[0141]

[0142]

[0143]

[0144]

[0145]

[0146]

[0147]

[0148]

[0149]

[0150]

[0151] 1: Specific wavelength absorbing colorant (B) 2: Red colorant 3: Yellow colorant 4: Blue colorant 5: Purple colorant 6: Specific wavelength absorbing colorant (C) 7: Specific wavelength absorbing colorant (D) 10: Binder 50: Substrate 60: Another layer 70: Display 100: Colored composition film 110: Sheet H: Height of pattern overlap

Claims

1. A colored composition film comprising the following coloring agent (A) and a specific wavelength absorbing coloring agent (B). Coloring agent (A): A coloring agent whose light transmission spectrum in the wavelength range of 430 to 580 nm satisfies the following formula (1). 0.01 < T ５５０ / T ５２０ <0.95 Formula (1) (where T Ａ (A is a number) is the light transmittance at wavelength A nm.) Specific wavelength absorbing colorant (B): A colorant that has a minimum value of light transmittance within the range of 490 ± 25 nm in the light transmission spectrum in the wavelength range of 430 to 580 nm, and has wavelengths in that wavelength range where the light transmittance is 50% or less.

2. The colored composition film according to claim 1, wherein the coloring agent (A) has a minimum value of light transmittance within the range of 580 ± 60 nm in a light transmission spectrum in the wavelength range of 420 to 640 nm, and the full width at half maximum of the peak (valley) containing the minimum value is 80 ± 30 nm.

3. The colored composition film according to claim 1 or claim 2, wherein the coloring agent (A) has a maximum value of light transmittance in the wavelength range of 430 to 580 nm, within the range of 490 ± 50 nm, and the full width at half maximum of the peak containing the maximum value is 70 ± 20 nm.

4. The colored composition film according to claim 1 or claim 2, wherein the coloring agent (A) comprises two or more colorants.

5. The colored composition film according to claim 1 or claim 2, wherein the coloring agent (A) comprises at least one or both of a blue coloring agent and a green coloring agent, and optionally at least one selected from the group consisting of a purple coloring agent, a yellow coloring agent and a red coloring agent.

6. The blue pigment is one or more pigments selected from the group consisting of C.I. Pigment Blue 15, C.I. Pigment Blue 15:1, C.I. Pigment Blue 15:2, C.I. Pigment Blue 15:3, C.I. Pigment Blue 15:4, C.I. Pigment Blue 15:5, C.I. Pigment Blue 15:6, and C.I. Pigment Blue 16; the green pigment is one or more pigments selected from the group consisting of C.I. Pigment Green 7, C.I. Pigment Green 36, C.I. Pigment Green 58, C.I. Pigment Green 59, C.I. Pigment Green 62, and C.I. Pigment Green 63; and the purple pigment is C.I. One or more colorants selected from the group consisting of Pigment Violet 14, C.I. Pigment Violet 19, C.I. Pigment Violet 23, C.I. Pigment Violet 29, C.I. Pigment Violet 30, C.I. Pigment Violet 32, C.I. Pigment Violet 33, C.I. Pigment Violet 36, and the yellow colorant is C.I. Acid Yellow 17, C.I. Acid Yellow 29, C.I. Acid Yellow 38, C.I. Acid Yellow 40, C.I. Acid Yellow 54, C.I. Acid Yellow 65, C.I. Acid Yellow 72, C.I. Acid Yellow 98, C.I. Acid Yellow 111, C.I. Acid Yellow 123, C.I. Acid Yellow 150, C.I. Acid Yellow 155, C.I. Acid Yellow 161, C.I. Acid Yellow 172, C.I. Acid Yellow 184, C.I. Acid Yellow 185, C.I. Acid Yellow 188, C.I. Acid Yellow 196, C.I. Acid Yellow 207, C.I. Acid Yellow 212, C.I. Acid Yellow 220, C.I. Acid Yellow 228, C.I. Acid Yellow 230, C.I. Acid Yellow 238, C.I. Acid Yellow 242, C.I. Acid Yellow 243, C.I. One or more colorants selected from the group consisting of Acid Yellow 251, the red colorants being C.I. Pigment Red 122, C.I. Pigment Red 123, C.I. Pigment Red 144, C.I. Pigment Red 177, C.I. Pigment Red 179,A colored composition film according to claim 5, comprising one or more colorants selected from the group consisting of C.I. Pigment Red 180, C.I. Pigment Red 215, C.I. Pigment Red 216, C.I. Pigment Red 217, C.I. Pigment Red 220, C.I. Pigment Red 254, C.I. Pigment Red 255, C.I. Pigment Red 256, C.I. Pigment Red 257, C.I. Pigment Red 264, C.I. Pigment Red 266, C.I. Pigment Red 267, C.I. Pigment Red 268, C.I. Pigment Red 269, and C.I. Pigment Red 291.

7. The colored composition film according to claim 5, wherein the coloring agent (A) contains at least one or both of a blue coloring agent and a green coloring agent, and when the total amount of the blue coloring agent and the green coloring agent is 100 parts by weight, the content of the purple coloring agent is 150 parts by weight or less when the coloring agent (A) contains a purple coloring agent, the content of the yellow coloring agent is 50 parts by weight or less when the coloring agent (A) contains a yellow coloring agent, and the content of the red coloring agent is 50 parts by weight or less when the coloring agent (A) contains a red coloring agent.

8. The colored composition film according to claim 1 or claim 2, wherein the full width at half maximum of the peak (valley) containing the minimum value of light transmittance within the range of 490 ± 25 nm of the specific wavelength absorbing colorant (B) is 20 ± 15 nm.

9. The colored composition film according to claim 1 or claim 2, wherein the specific wavelength-absorbing colorant (B) is a compound represented by the following formula (1) or a compound represented by the following formula (2). (X is C—R ７ or N. R １ to R ９ may be the same or different from each other, and is selected from hydrogen, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, a hydroxyl group, a thiol group, an alkoxy group, an alkylthio group, an aryl ether group, an arylthioether group, an aryl group, a heteroaryl group, a halogen, a cyano group, an aldehyde group, a carbonyl group, a carboxyl group, an oxycarbonyl group, a carbamoyl group, an amino group, a nitro group, a silyl group, a siloxanyl group, a boryl group, a phosphine oxide group, and the selected group may form a condensed ring or an aliphatic ring with an adjacent substituent.) (R １ represents an alkyl fluoride group which may have a substituent, R ２ represents a linear, branched or cyclic alkyl group which may have a substituent, R ３ and R ４ are the same or different and are a linear, branched or cyclic alkyl group which may have a substituent or an aryl group which may have a substituent.) 10. A colored composition film according to claim 1 or claim 2, further comprising either or both of the following specific wavelength absorbing colorants (C) and (D): Specific wavelength absorbing colorant (C): A colorant having a minimum value of light transmittance in the wavelength range of 575 ± 25 nm in a light transmission spectrum in the wavelength range of 550 to 600 nm. Specific wavelength absorbing colorant (D): A colorant having a minimum value of light transmittance in the wavelength range of 375 ± 65 nm in a light spectrum in the wavelength range of 310 to 440 nm.

11. The colored composition film according to claim 10, wherein the colored composition film comprises a specific wavelength absorbing colorant (C), and the specific wavelength absorbing colorant (C) is a compound represented by the following formula (3), or the colored composition film comprises a specific wavelength absorbing colorant (D), and the specific wavelength absorbing colorant (D) is a compound represented by the following formula (4). (Z １ and Z ２ Z ３ and Z ４ Z ５ and Z ６ and Z ７ and Z ８ Each of these is independently a linear, branched, or cyclic alkyl group, a linear, branched, or cyclic alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or a hydrogen atom, and some or all of the hydrogen atoms of the alkyl group and the alkoxy group may be substituted with halogens, Z １ and Z ２ Z ３ and Z ４ Z ５ and Z ６ and Z ７ and Z ８ In each pair, the two substituents are distinct from each other. M is a hydrogen atom, a divalent metal atom, a trivalent or tetravalent substituted metal atom, or an oxy metal. (R １ａ R represents a cyano group, nitro group, trifluoromethyl group, heterocyclic group, or -O-C(O)H, ２ａ R represents a hydrogen atom, a cyano group, a nitro group, a trifluoromethyl group, a heterocyclic group, or -O-C(O)H. ３ａ R represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 20 carbon atoms which may have substituents, or an aryl group having 6 to 20 carbon atoms which may have substituents. ４０２ａ R represents an alkyl group having 1 to 20 carbon atoms, which may have substituents. ４０４ａ and R ４０５ａ R represents a hydrogen atom, a C1-C20 alkyl group which may have substituents, or a C6-C20 aryl group which may have substituents, which may be the same or different. ４０４ａ , R ４０５ａ And R ４０４ａ and R ４０５ａ The nitrogen atom to which it is bonded may form a 4- to 8-membered nitrogen-containing heterocycle, which may have substituents. ４１３ (This represents an alkyl group having 1 to 20 carbon atoms, which may have substituents, or an aryl group having 6 to 20 carbon atoms, which may have substituents.) 12. The colored composition film according to claim 1 or claim 2, wherein the ratio (Wb / Wa) of the weight (Wb) of the specific wavelength absorbing colorant (B) contained in the colored composition film to the weight (Wa) of the colorant (A) is 0.2 to 5.

13. A colored composition film according to claim 1 or claim 2, further comprising an acrylic resin or a siloxane resin.

14. A coloring composition comprising the following coloring agent (A) and specific wavelength absorbing coloring agent (B), an organic solvent or reactive diluent, and optionally a binder. Coloring agent (A): A coloring agent whose light transmission spectrum in the wavelength range of 430 to 580 nm satisfies the following formula (1). 0.01 < T ５５０ / T ５２０ <0.95 Formula (1) (where T Ａ (A is a number) is the light transmittance at wavelength A nm.) Specific wavelength absorbing colorant (B): A colorant that has a minimum value of light transmittance within the range of 490 ± 25 nm in the light transmission spectrum in the wavelength range of 430 to 580 nm, and has wavelengths in that wavelength range where the light transmittance is 50% or less.

15. A visible light transmission modifier having a colored composition film according to claim 1 or 2 formed on a substrate.

Images