KR100549853B1 - Selectively light-absorptive material for color display device, coating composition containing the same and filter manufactured using the coating composition - Google Patents

Abstract

The present invention provides a light selective light absorber for a color display device, a coating agent comprising the same, and a filter made of the coating agent. The photoselective light absorber comprises dimers of tetraazapophyrin derivatives.

When the coating agent including the light selective light absorbing agent according to the present invention is applied to a color display device, color purity and contrast of the color display device may be improved by blocking reflected light of the display device and emission light corresponding to an intermediate color of three primary colors.

Description

Selectively light-absorptive material for color display device, coating composition containing the same and filter manufactured using the coating composition

1 shows a typical emission spectrum of a cathode ray tube,

2 shows the emission spectrum of the plasma display panel,

3 shows an absorption spectrum of a polyester polymer to which tetraazapophyrin derivatives prepared in Synthesis Example 1 of the present invention are bound,

4 shows the transmission spectrum of each colored glass filter obtained in Examples 1 and 2 of the present invention,

Fig. 5 shows the transmission spectrum after the heat exposure of each colored glass filter obtained in Example 1 and Comparative Example 1 of the present invention,

Fig. 6 shows the transmission spectrum after light exposure of each colored glass filter obtained in Example 1 and Comparative Example 2 of the present invention.

The present invention relates to a light selective light absorber for a color display device that can improve color purity and contrast of a color display device, a coating agent comprising the same, and a filter made of the coating material.

In the display device, the viewer's eyes are tired and the contrast is low due to the surface reflection of ambient light. The reflected light is the addition of the external light reflected from the glass surface used as the screen and the light reflected from the light emitter inside the screen has been studied in the art to reduce this. U.S. Patent No. 4,989,953 discloses a study for the reduction of reflected light. One approach to reducing reflected light for color displays is to use a neutral density (ND) filter or an attenuator. The ND filter is a method of improving contrast by transmitting only a portion of light regardless of a wavelength, but is widely used in manufacturing a color CRT display device, but has a problem of reducing screen brightness. Another method is to combine an ND filter and an antireflection coating, which reduces the reflection of external light from the emitter and the reflected light on the surface of the display while causing a decrease in brightness and no improvement in color purity.

Thus, a method of minimizing luminance reduction while simultaneously improving color purity and contrast has been proposed. A method of transmitting light in three primary colors emitted from a display device and blocking light in the remaining areas has been proposed. Unlike the ND filter, this method allows the light emitted from the display device to be sufficiently transmitted while sufficiently reducing external light, thereby minimizing the reduction in luminance compared to the effect of increasing the contrast. It has the advantage of being extensible.

U.S. Patent Nos. 4,288,250, 4,520,115 and 4,245,242 have applied colored glass containing metal oxides, including neodium oxide, as a front material for cathode ray tubes or used as filters. This method has the advantage of reducing the luminance of the display device and at the same time lowering the reflectance of the external light and improving the color purity, but it is disadvantageous in that the manufacturing process of the colored glass is complicated and the manufacturing cost is high.

In addition, Japanese Patent Publication No. 44-5091, Japanese Patent Publication No. 59-217705, Hei 4-106150, Hei 6-88007 and Hei 10-120860 disclose a colored plastic obtained by dispersing or dissolving a neodium oxide or an organic neodium compound in a plastic. Although it has been intended to improve the characteristics of the color display device, they have a disadvantage in that the characteristics are gradually deteriorated due to the difficulty of dispersion or dissolution and yellowing of the plastic material.

Japanese Patent Laid-Open No. Hei 2-210486 and U.S. Patent No. 5,200,667 propose a color display device filter mainly composed of a pigment and a plastic resin material, but this contributes to the improvement of color purity due to the wide absorption width of the pigment and the small light selectivity. Although US Patent No. 5,834,122 proposes a band pass filter for display devices with improved color selectivity, there is a problem in that a light absorbing dye between green and red or between blue and green is insufficient in practical use.

Plasma display panel (PDP) encapsulates and seals an inert gas such as helium, neon, argon, xenon, or a mixed gas thereof in a partition surrounded by glass, and then applies a high voltage to ionize the gas to form a plasma. The ultraviolet rays emitted here excite the phosphors and emit light. PDPs can be secured with a wide viewing angle, are easier to be enlarged than other display devices, and are considered to have the most suitable characteristics as high-quality televisions of the PDP in the future as thin-type light emitting display devices.

However, PDP has a disadvantage in that the luminance is lower than that of CRT and the surface reflection of the phosphor is not only high, but also the color purity does not reach the cathode ray tube due to the orange light emitted from the encapsulated gas helium. FIG. 1 shows the emission spectrum of the plasma display panel, which has a strong emission peak near 590 nm in red when compared with the emission spectrum of the CRT of FIG. 2, due to the inclusion gas, neon. Therefore, the red color is difficult to implement. Considering the various uses and potential uses of the PDP, it is very urgent to develop a device or a mechanism that lowers the reflection on the surface of the display and improves the overall color purity and contrast without serious loss of screen brightness and sharpness.

Therefore, the present inventors have developed a light absorber which can absorb light between blue and ultraviolet rays, between blue and green colors, between green and red colors, and between red and ultraviolet rays, and has excellent heat resistance. The present invention was completed by discovering that color purity and contrast of a color display device can be economically improved by applying the same to a filter for a color display device.

Accordingly, a technical object of the present invention is to provide a light selective light absorber for a color display device which can improve the color purity and contrast of the color display device by blocking the reflected light of the color display device and the emission light corresponding to the intermediate color of the three primary colors. It is.

Another object of the present invention is to provide a photoselective absorbent coating comprising the photoselective light absorber.

Another technical problem to be achieved by the present invention is to provide a photoselective absorbent filter comprising the photoselective absorbent coating agent.

In order to achieve the first technical problem, the present invention provides a color display device comprising a polyester polymer formed from a dihydroxy compound and a dicarboxylic acid to which a metal coordination-tetraazaporphyrin derivative represented by the following Chemical Formula 1 is bound: It provides a photoselective light absorber.

In the compound of Formula 1

R ₁ , R ₂ , R ₃ and R ₄ are each independently hydrogen; Unsubstituted phenyl group; Alkyl groups having 1 to 8 carbon atoms; Alkoxy groups having 1 to 8 carbon atoms; A phenyl group substituted with at least one selected from the group consisting of an alkyl group having 1 to 8 carbon atoms, a nitro group, a halogen atom, an alkylamino group having 1 to 8 carbon atoms, an aminoalkyl group having 1 to 8 carbon atoms, and a cyano group; Nitro group; Halogen atom; Alkylamino groups having 1 to 8 carbon atoms; And it is selected from the group consisting of cyano group,

Or in the compound of Formula 1, one to three groups of R ₁ and R ₂ are fused to each other to form an aromatic ring of Formulas 4a to 4f, and the remaining groups are each hydrogen; Alkyl groups having 1 to 8 carbon atoms; Alkoxy groups having 1 to 8 carbon atoms; Allyl group; Halogen atom; Cyano group; And nitro groups,

X represents O or NH,

M has a divalent oxidation number and represents a metal element complexed with a tetraazapopyrine derivative ring,

P represents a polyester polymer main chain to which the tetraazapopyrine derivative of Formula 1 is bound,

Wherein R ₅ , R ₅ ′, R ₅ ″ and R ₅ ″ are each independently hydrogen; Alkyl groups having 1 to 8 carbon atoms; Alkoxy groups having 1 to 8 carbon atoms; Allyl group; Halogen atom; Cyano group; And a nitro group, B is an alkyl group or an allyl group having 1 to 8 carbon atoms, and each of X ₁ ^- and X ₂ ^- independently represents an anion or alkyl sulfonate of a halogen element, and a dotted line part is represented by Formula 1 above. The part couple | bonded with the pyrrole group of is shown.

In the metal coordination-tetraazaporphyrin derivative of Chemical Formula 1, M is selected from the group consisting of divalent metal elements of Mg, Mn, Co, Cu, Ru, Pt, Pd, Zn, Cr, Fe and Ni. It is preferable to be one.

The polyester polymer main chain to which the tetraazapophyrin derivative of formula (1) to which the metal coordination-tetraazaporphyrin derivative of formula (1) binds is an ester of a dihydroxy compound of formula (2) and a dicarboxylic acid compound of formula (3) Polymers obtained by the reaction are preferred.

Wherein R ₆ is an alkylene group having 2 to 4 carbon atoms, and R ₇ , R ₈ , R ₉ and R ₁₀ are each independently hydrogen; Alkyl groups having 1 to 4 carbon atoms; Or an aryl group, A represents a moiety to which the tetraazapophyrin derivative of formula (1) is bonded, and the tetraazapophyrin derivative of formula (1) may bind to one or both of two As, and tetraazapophyrin of formula (1). A to which the derivative is not bonded is hydrogen; Halogen atom; An alkyl group having 1 to 8 carbon atoms; Or an alkoxy group having 1 to 8 carbon atoms.

In the above formula, R ₁₁ and R ₁₂ are each independently hydrogen; Alkyl groups having 1 to 8 carbon atoms; And a substituted or unsubstituted aryl group; It is selected from the group consisting of, n ₁ and n ₂ each represent an integer of 1 to 7.

The second technical problem of the present invention is achieved by the photoselective absorbent coating for color display device comprising the above-described photoselective light absorber, plastic resin and organic solvent.

A third technical problem of the present invention is achieved by a light selective absorbing filter for a color display device, comprising a light selective light absorber and a plastic resin.

Hereinafter, the present invention will be described in more detail.

In general, in order to improve color purity and contrast of a color display device, a light absorber capable of selectively absorbing light between blue and green, red and green, and red and infrared light is required. Absorbing absorbers are required.

The photoselective light absorber comprising a dihydroxy compound and a polyester polymer formed from dicarboxylic acid, to which the metal coordination-tetraazapophyrin derivative of the formula 1 is bound, effectively absorbs light between red and green. It has properties and also has a strong absorption band in the vicinity of extreme infrared rays, and thus has an effect of blocking near infrared rays.

That is, the photo-selective light absorbing agent according to the present invention, characterized in that it comprises a polyester polymer formed from a dihydroxy compound and a dicarboxylic acid to which the metal coordination-tetraazaporphyrin derivative of the formula (1) is bonded 570 to 610nm In the region, it has a strong primary absorption band with a width of about 30 to 50 nm, and this absorption band absorbs light between red and green to satisfy the excellent photoselective absorbency required in the optical filter for color display devices. In addition, the photoselective light absorber according to the present invention has a wide absorption band in a region of 800 nm or more, and the absorption band absorbs near infrared rays to satisfy the excellent photoselective absorbency required in the optical filter for color display devices.

Since the photo-selective light absorber of the present invention comprising a polyester polymer formed from a dihydroxy compound and a dicarboxylic acid to which the metal coordination-tetraazaporphyrin derivative of Formula 1 is bonded, shows excellent heat resistance and light resistance It can be used for a long time in a color display device such as a cathode ray tube or a plasma display panel.

The photoselective light absorber according to the present invention may be prepared by dissolving in an organic solvent together with a plastic resin and preparing a coating agent. The content of the photoselective light absorber in this coating agent is from 0.05 to 1% by weight based on the coating solids. At this time, if the content of the light selective light absorber is less than 0.05% by weight, it is not preferable to implement the required light absorbing properties, and if it exceeds 1% by weight, the physical properties of the coating agent are lowered.

In the light selective absorbent coating agent of the present invention, it is preferable to use a transparent plastic resin such as polymethyl (meth) acrylate, polyvinyl alcohol, polycarbonate, polyethylene terephthalate, ethylene vinyl acetate and polyvinyl butyral. Preferably, the content is 5 to 40% by weight based on the total weight of the organic solvent. If the content of the transparent plastic resin is less than 5% by weight it is difficult to secure the thickness for implementing the required physical properties, if the content exceeds 40% by weight is not preferable because the coating properties are lowered.

In the photoselective absorbent coating agent of the present invention, the organic solvent is toluene, xylene, propyl alcohol, isopropyl alcohol, dimethylformamide, cyclohexanone, cyclopentanone, tetrahydrofuran, dichloromethane, chloroform, methylcellulsolve , Ethyl cellosolve, dimethylformamide and the like can be used.

In the photoselective absorbent coating of the present invention, azo dyes, cyanine dyes, diphenylmethane dyes, triphenylmethane dyes, phthalocyanine dyes, and xanthene dyes are used to control the transmittance of each wavelength region of the color display device or to realize whiteness. , Diphenylene dyes, dyes such as indigo or porphyrin can be further added. At this time, the content of the dye is preferably 0.05 to 3% by weight based on the total weight of the total solid content of the coating agent. If the content of the dye is less than 0.05% by weight is insufficient implementation of the required light absorption characteristics, if the content of more than 3% by weight is not preferable because the physical properties of the coating agent is lowered.

In the coating agent of the present invention, it is preferable to further add a sunscreen agent to block ultraviolet rays reflected from a color display device, in particular, a plasma display panel, and the sunscreen agent includes HALS (TINUVIN928 (manufactured by CIVA Specialty Co., Ltd.)). Amine Light Stabilizer) series, absorbents such as phenyl salicylate, benzophenone, benzotriazole or nickel derivative quencher or the like is preferably used alone or in combination.

In the coating agent of the present invention, it is preferable to further add an infrared ray blocking agent to block infrared rays (especially near infrared rays) reflected from a color display device, in particular, a plasma display panel. Such infrared ray blocking agents are represented by the following Chemical Formulas 5, 6 and 7 The compound which becomes, etc. can be used. The compound represented by the following formula (5) shows the structure of diimnium, and for example, trade name IRG022 (manufactured by Nippon Kayaku Co., Ltd.). The compounds represented by the following formulas (6) and (7) show the structure of the dithiolate, and examples thereof include trade names SIR128, SIR130, SIR132, and SIR159 (Mitsui Chemical Co., Ltd.).                     

In Formula 5, R 'is an alkyl group having 1 to 6 carbon atoms, Y is ^{_{ClO 4 -, Ab 2 F 6}} -, BF 3 -, toluene represents a sulfonate or sulfonate anion.

In Chemical Formula 6, M is Ni, Pd or Pt, and R ″ represents hydrogen or an alkyl or alkoxy group having 1 to 10 carbon atoms; a phenyl substituted with a halogen atom or an alkylamine; or a phenyl group.

In Formula 7, M 'is Fe, Ni, Cu, Co or Pt, R''' is hydrogen; Alkyl or alkoxy groups having 1 to 10 carbon atoms; Halogen atom; Or a nitro group, and Q ⁺ is a tetraalkylammonium cation (wherein the alkyl group has 1 to 6 carbon atoms).

In addition, a stabilizer may be further added to the light selective absorbent coating agent of the present invention to improve light resistance. Stabilizers that can be used include radical reaction inhibitors that prevent the fading of pigments that can be used conventionally.

The photo-selective absorbent coating of the present invention may be used by coating the glass, plastic or plastic film to be mounted on the display device, or by directly coating the surface of the display device, and such coating may be performed using conventional methods. It may be performed by, for example, spin coating or roll coating. The photo-selective absorbent coating agent of the present invention is preferably coated with a thickness of 1 to 20㎛. If the coating film thickness of the photoselective absorbent coating agent is less than 1 μm, the desired absorption characteristics are insufficient. If the thickness is greater than 20 μm, the coating properties are deteriorated.

The photoselective absorbent filter of the present invention is completed by coating and drying the above-described photoselective absorbent coating agent. Therefore, since the solvent contained in the coating is removed during the drying process, the photoselective absorption filter includes a polyester polymer formed from a dihydroxy compound and a carboxylic acid to which tetraazapopyrine derivative of Formula 1 is bound, and a plastic resin.

The polyester polymer as the light selective light absorbing agent according to the present invention may be prepared, for example, as in Scheme 1 below.                     

(Wherein R ₁ to R ₁₂ , X, n ₁ , n ₂ , M and X are as defined above, L represents a leaving group such as a halogen atom, and n is an integer.)

As shown in Scheme 1, the metal coordination tetraaza porphyrin derivative of the formula (8) is etherified with the dihydroxy compound of the formula (9) to form the compound of the formula (10), and then the compound and the ester of the formula (11) Through the polymerization reaction to form the desired polyester polymer of the formula (12). The etherification reaction and the esterification reaction may use a conventional method.

Among the definitions of terms used in the specification of the present invention,

Specific examples of the alkyl group having 1 to 8 carbon atoms include methyl group, ethyl group, propyl group, butyl group, isobutyl group, tert-butyl group, pentyl group, isopentyl group, neopentyl group, octyl group and the like;

Specific examples of the alkoxy group having 1 to 8 carbon atoms include methoxy group, ethoxy group, propoxy group, butoxy group, pentoxy group and the like;

Specific examples of halogen atoms include fluorine, chlorine, iodine or bromine;

Specific examples of the halide include chloromethyl group, bromomethyl group, urethomethyl group, fluoromethyl group, and the like;

Specific examples of the alkylamino group having 1 to 8 carbon atoms include methylamino group, ethylamino group and the like;

Specific examples of the aminoalkyl group having 1 to 8 carbon atoms include an aminomethyl group and an aminoethyl group.

Hereinafter, the present invention will be described with reference to the following synthesis examples and examples, but the present invention is not limited to the following synthesis examples and examples.

Synthesis Example 1

<Synthesis of substituted fullerenes (compound of formula 15)>

The zinc coordination-tetraazapophyrin derivative (10 mmol) of Formula 13 was dissolved in a reaction vessel with stirring in 300 mL of DMF, and NaH (12 mmol) was added thereto and heated to 100 ° C. for about 1 hour. After 1 hour, a dihydroxy compound of formula 14 (10 mmol) was added thereto and reacted with heating for 20 hours. After completion of the reaction, the compound of formula 15 was obtained by fractionation using ethyl acetate and pure water. Purification via recrystallization.

Synthesis of Substituted Polyester 4

Dimethyl-2,6-decaliniccarboxylic acid (1 mol) and the compound of formula 15 (1 mol) and ethylene glycol (2.2 mol) obtained in the reaction together with calcium acetate (0.0008 mol) and manganese acetate (0.0002 mol) catalyst Placed in the reactor and heated with stirring. After a certain period of time, a small amount of germanium oxide and trimethyl phosphate was added thereto, followed by a polymerization reaction while heating, thereby obtaining a target compound of formula 16 (yield: 50% or more). The absorption spectrum of the obtained compound is shown in FIG. As can be seen in FIG. 3, strong absorption was shown between red and green and near near infrared.

Example 1

100 g of the result obtained in the above synthesis example was added to 300 ml of cyclopentanone (Cyclopentanone) and completely dissolved. A photo-selective absorbent coating agent was prepared by dissolving 4 g of IRG022 (Japanese gunpowder), 1.35 g of SIR159 (Mitsui Chemical), and 8 g of TINUVIN928 (manufactured by Shiva Specialty Co., Ltd.) as a UV blocking agent. The coating agent thus prepared was coated on a transparent glass substrate using spin coating, and then dried at 120 ° C. for 5 minutes to obtain a colored glass substrate having a thickness of about 8 microns. In order to evaluate the stability of the colored glass substrate thus prepared to heat and light, an anti-reflective polyethylene terephthalate film was laminated on the obtained colored glass plate.

 The spectrum obtained using the spectrophotometer with respect to the thus obtained colored glass filter is shown in FIG. 4.

Using PDP as a light source, visual characteristics such as red dominant wavelength shift, color temperature shift, duv (degree of color distortion) and visible light transmittance were measured and shown in Table 1 below.

Example 2

A photoselective absorbent coating, a colored glass substrate, and a filter to which 40 mg of DS03 (Japanese Dye Pigment), which is a dye for controlling color balance, were applied, were obtained in the same manner as in Example 1. The spectrum obtained by using a spectrophotometer for the thus obtained colored glass filter is shown in FIG. 4, and a filter of a type in which a small amount of transmittance is reduced while the distortion of color is improved is obtained. Visual properties were measured and listed in Table 1 below.

Comparative Example 1

Zinc-tetraazaporphyrin and polymethyl methacrylate (PMMA) were applied to obtain a photoselective absorbent coating, a colored glass substrate, and a filter in the same manner as in Example 1.

The visual characteristics were measured as in Example 1, and are shown in Table 1 below.

The results of 500 hours of heat resistance test (85 ℃ Baking, 65% humidity) showed that the change of other pigments was small when PMMA was applied, but the concentration of IRG022 decreased rapidly due to the decrease of heat resistance in PMMA. That is, as can be seen in Figure 5 in the case of using the photo-selective absorbent coating of Example 1, the absorbance is maintained intact in the wavelength band of 850nm or more after heat exposure, while showing a low transmittance in the case of Comparative Example 1 IRG022 after heat exposure Decomposition of (about 60% of the initial concentration of the decomposition) decreases the concentration increases the transmittance of the wavelength band of more than 850nm.

Comparative Example 2

A photoselective absorbent coating without coloring TINUVIN928, a colored glass substrate, and a filter were obtained in the same manner as in Example 1. The light transmittance before and after exposure by Xenon Lamp 67klx for 40 hours was measured using a spectrophotometer and compared with the results of Example 1, and is shown in FIG. 6. As can be seen in FIG. 6, it was confirmed that when the UV blocker is not applied, the light durability of IRG022 is greatly damaged.

division Red wavelength shift (nm) Color temperature shift (K) duv Visible light transmittance (%) Example 1 +5 +700 -0.0012 70 Example 2 +5 +600 -0.0007 64 Comparative Example 1 (After Thermal Exposure) +4 +1000 -0.0033 80 Comparative Example 2 (After Light Exposure) +3 +700 -0.0013 83

As can be seen from the results of Table 1, the red dominant wavelength shift of Examples 1 and 2 was +5 nm, and a significant level of color purity was improved. In the case of Comparative Examples 1 and 2, in the visible light transmittance, It can be seen that the visible light transmittance due to decomposition is generally increased, thereby degrading the quality of the filter. It can be seen that both the color temperature shift and the degree of color distortion are also good.

When the coating agent including the light selective light absorbing agent according to the present invention is applied to the color display device, the color light and contrast of the color table may be improved by blocking the reflected light of the display device and the emission light corresponding to the intermediate color of the three primary colors.

Claims (16)

In the photoselective light absorber for color display device comprising a polyester polymer formed by polymerization of a dihydroxy compound and a dicarboxylic acid compound, The dihydroxy compound is a dihydroxy compound of the formula (2) to which a metal coordination- tetraaza porphyrin derivative of the formula (1) is bonded, The dicarboxylic acid compound is a photo-selective light absorber for a color display device characterized in that the dicarboxylic acid of the formula (3): <Formula 1> (In the compound of Formula 1, R ₁ , R ₂ , R ₃ and R ₄ are each independently hydrogen; Unsubstituted phenyl group; Alkyl groups having 1 to 8 carbon atoms; Alkoxy groups having 1 to 8 carbon atoms; A phenyl group substituted with at least one selected from the group consisting of an alkyl group having 1 to 8 carbon atoms, a nitro group, a halogen atom, an alkylamino group having 1 to 8 carbon atoms, an aminoalkyl group having 1 to 8 carbon atoms, and a cyano group; Nitro group; Halogen atom; Alkylamino groups having 1 to 8 carbon atoms; And it is selected from the group consisting of cyano group, Or in the compound of Formula 1, one to three groups of R ₁ and R ₂ are fused to each other to form an aromatic ring of Formulas 4a to 4f, and the remaining groups are each hydrogen; Alkyl groups having 1 to 8 carbon atoms; Alkoxy groups having 1 to 8 carbon atoms; Allyl group; Halogen atom; Cyano group; And nitro groups, X represents O or NH, M has a divalent oxidation number and represents a metal element complexed with a tetraazapopyrine derivative ring, P represents a polymer backbone consisting of polyester, <Formula 4a>

<Formula 4b>

<Formula 4c>

<Formula 4d>

<Formula 4e>

<Formula 4f>

Wherein R ₅ , R ₅ ′, R ₅ ″ and R ₅ ″ are each independently hydrogen; Alkyl groups having 1 to 8 carbon atoms; Alkoxy groups having 1 to 8 carbon atoms; Allyl group; Halogen atom; Cyano group; And a nitro group, B is an alkyl group or an allyl group having 1 to 8 carbon atoms, and each of X ₁ ^- and X ₂ ^- independently represents an anion or alkyl sulfonate of a halogen element, and a dotted line part is represented by Formula 1 above. Indicates the part bound to the pyrrole group <Formula 2>

(Wherein R ₆ is an alkylene group having 2 to 4 carbon atoms, R ₇ , R ₈ , R ₉ and R ₁₀ are each independently hydrogen; an alkyl group having 1 to 4 carbon atoms; or an aryl group, and A is represented by Formula 1 above) The tetraazapophyrin derivative represents a moiety to which the tetraazapophyrin derivative of Formula 1 may bind one or both of two A's, and A, to which the tetraazapophyrin derivative of Formula 1 is not bonded, is hydrogen; a halogen atom An alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms) <Formula 3>

(Wherein R ₁₁ and R ₁₂ are each independently hydrogen; an alkyl group having 1 to 8 carbon atoms; and a substituted or unsubstituted aryl group; n ₁ and n ₂ are each an integer of 1 to 7) Indicates) The light absorber according to claim 1, wherein M is any one selected from the group consisting of divalent metal elements of Mg, Mn, Co, Cu, Ru, Pt, Pd, Zn, Cr, Fe, and Ni. . delete delete A photoselective light absorber according to claim 1 or 2, At least one plastic resin selected from the group consisting of polymethyl (meth) acrylate, polyvinyl alcohol, polycarbonate, polyethylene terephthalate, ethylene vinyl acetate and polyvinyl butyral, and Toluene, xylene, propyl alcohol, isopropyl alcohol, dimethylformamide, cyclohexanone, cyclopentanone, tetrahydrofuran, dichloromethane, chloroform, methylcellulose, ethylcellulose, and dimethylformamide A coating agent comprising at least one organic solvent, The photo-selective light absorber is 0.05 to 1% by weight based on the coating solids, the plastic resin is a light-selective absorbent coating for color display device, characterized in that 5 to 40% by weight based on the total weight of the organic solvent. delete delete delete delete The coating of claim 5 further comprising a dye. 6. The coating of claim 5 further comprising a sunscreen. The coating agent according to claim 11, wherein the sunscreen is at least one selected from the group consisting of HLS (Hinderd Amine Light Stabilizer) series, phenyl salicylate, benzophenone, benzotriazole and nickel compound quencher. 6. The coating of claim 5, further comprising an infrared ray blocker. The coating agent according to claim 13, wherein the infrared ray blocking agent is at least one selected from compounds represented by the following Chemical Formulas 5, 6 and 7. <Formula 5>

(The above formula, R 'is an alkyl group having 1 to 6 carbon atoms, Y is ^{_{ClO 4 -, Ab 2 F 6}} -, BF 3 -, represent toluene sulfonate or benzene sulfonate anion) <Formula 6>

(Wherein M is Ni, Pd or Pt, and R ″ represents hydrogen or an alkyl or alkoxy group having 1 to 10 carbon atoms; phenyl substituted by halogen atom or alkylamine; or phenyl group) <Formula 7>

[Wherein M 'is Fe, Ni, Cu, Co or Pt, and R''' is hydrogen; Alkyl or alkoxy groups having 1 to 10 carbon atoms; Halogen atom; Or a nitro group, Q ⁺ is a tetraalkylammonium cation, wherein the alkyl group has 1 to 6 carbon atoms] A light selective absorbent filter for a color display device, comprising a light selective absorbent according to claim 1 and a plastic resin. 16. The filter according to claim 15, wherein the plastic resin is at least one selected from the group consisting of polymethyl (meth) acrylate, polyvinyl alcohol, polycarbonate, polyethylene terephthalate, ethylene vinyl acetate and polyvinyl butyral. .

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