JP2008268331A - Filter for display, manufacturing method thereof, filter for plasma display, plasma display, filter for liquid crystal display, and liquid crystal display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter for displays which can be suitably manufactured and effectively improves the durability of a display. <P>SOLUTION: A filter 1 for displays is provided in a path of light reaching the outermost surface of a viewing part from a light emission source and has a function of selectively absorbing light at a specific wavelength and is applicable to a plasma display PD, a liquid crystal display LD, and the like and contains a tetraazaporphyrin compound having a selective absorption wavelength of 570 to 605 nm, as colorants P and Q. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a display filter, and more particularly to a filter suitably used for a plasma display and a liquid crystal display.

  Conventionally, in a display such as a plasma display or a liquid crystal display, a display filter that cuts light in a predetermined wavelength region has been widely used. In such a filter, a filter having a selective light absorption wavelength in the range of 570 to 605 nm plays an important role for ensuring good image quality of the plasma display and the liquid crystal display, respectively.

  Specifically, in the case of a plasma display, it is used to improve red emission purity by blocking orange light specifically included in neon light, that is, light emission of 570 to 605 nm (for example, (See Patent Document 1 and Patent Document 2).

  On the other hand, in the case of a liquid crystal display as well, in order to display a real image in a color as close as possible to the real thing, it is necessary that the color purity of each of the three primary colors emitted from the display be as high as possible. In order to increase the color purity, it is required that the shape of the wavelength spectrum of each single emission of the three primary colors be as sharp as possible at each emission position. In particular, in a transmissive liquid crystal display, a technique for improving red emission purity by sufficiently blocking emission of 570 to 605 nm emitted from a backlight using a color filter is disclosed (for example, Patent Document 3). reference).

And in order to manufacture the filter which has such a characteristic, the pigment | dye which can selectively absorb the light of the frequency band mentioned above is indicated by each patent document mentioned above.
Japanese Patent No. 3311720 Japanese Patent No. 3834479 JP 2002-040233 A

  However, the characteristics required for a dye having such characteristics are not only the characteristics that can effectively absorb light in a predetermined wavelength region.

  Specifically, in order to suitably produce such a dye as a display filter, the processing characteristics of the dye itself are also important factors. That is, these dyes are usually produced in a form dissolved in an organic solvent. For example, in the case of a dye that can be dissolved in an organic solvent, that is, a dye having low solubility, a large amount of a solution of such a dye must be prepared. In this case, the labor and time are increased in the process of handling the dye in the production stage. That is, the solubility of the dye in the solvent is one of the most important factors determining the production efficiency of the display.

  On the other hand, a display as a finished product is always in a state where it is irradiated with intense light during its use. In particular, since the filter for display is arranged near the light source, if such a dye does not have sufficient light resistance, it cannot withstand long-term use and absorbs light in a predetermined frequency band sufficiently. It is transmitted without being able to be done, which causes a decrease in image quality as it is. That is, the light resistance of the dye itself is one of the important factors that determine the durability of the display.

  The present invention focuses on such problems, and an object of the present invention is to provide a display filter that can be suitably manufactured and that effectively improves the durability of the display.

  In order to achieve such an object, the present invention takes the following measures. That is, the display filter according to the present invention is a display filter having a function of selectively absorbing light of a specific wavelength, which is provided in a light path from the light emitting source to the outermost surface of the viewing portion. The selective light absorption wavelength has at least a dye existing between 570 and 605 nm, and the dye is a tetraazaporphyrin compound represented by the following formula (1) [Chemical Formula 3] It is what.

(In the formula (1), at least one of A ₁ to A ₈ represents at least a halogenoalkoxy group having 1 to 20 carbon atoms, each independently except halogenoalkoxy group in the A ₁ to A _8, a hydrogen atom, Halogen atom, nitro group, cyano group, hydroxy group, amino group, carboxyl group, sulfonic acid group, linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, alkoxy group having 1 to 20 carbon atoms, carbon number 1 -20 halogenoalkoxy groups, aryloxy groups having 6 to 20 carbon atoms, monoalkylamino groups having 1 to 20 carbon atoms, dialkylamino groups having 2 to 20 carbon atoms, dialkylamino groups having 7 to 20 carbon atoms, carbon numbers Represents an aralkyl group having 7 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, a heteroaryl group, an alkylthio group having 6 to 20 carbon atoms, and an arylthio group having 6 to 20 carbon atoms, A ring other than an aromatic ring may be formed through a linking group, and M is two hydrogen atoms, a divalent metal atom, a divalent monosubstituted metal atom, a tetravalent disubstituted metal atom, or oxy Represents a metal atom.)
In particular, the halogenoalkoxy group is preferably represented by the formula (2) [Chemical Formula 4].

[In the formula (2), Z ₁ , Z ₂ and Z ₃ represent a halogen atom or a hydrogen atom, and at least one of the Z ₁ , Z ₂ and Z ₃ represents a halogen atom, An alkyl group having 1 to 20 carbon atoms or a halogenoalkyl group is represented. ]
Here, specific examples of the tetraazaporphyrin compounds represented by the formulas (1) and (2) are described below.

In the formula, with respect to A _{1 to} A ₈ , as specific examples other than the halogenoalkoxy group represented by the formula (2) [Chemical Formula 4], each independently, as a linear type, a fluoromethoxy group, a difluoromethoxy group , Trifluoromethoxy group, 1,1,2,2,2-pentafluoroethoxy group, 1,1,2,2-tetrafluoroethoxy group, 1,1,2-trifluoroethoxy group, 1,2,2 -Trifluoroethoxy group, 2,2-difluoroethoxy group, 1,2-difluoroethoxy group, 1,1-difluoroethoxy group, 2-fluoroethoxy group, 1-fluoroethoxy group, 2,2,3,3- Tetrafluoro-1-propoxy group, 2,2,3,3,3-pentafluoro-1-propoxy group, 2,2,3,3,4,4,4-heptafluoro-1-butoxy group, 2, 2,3,4,4,4-hexafluoro-1-butoxy group, 2,2,3,3,4,4,5,5-octafluoro-1-pentyloxy group, 3,3,4,4 , 5,5,6,6,6-Nonafluoro-1-hexyloxy group 4,4,5,5,6,6,7,7,7-nonafluoro-1-heptyloxy group, 2,2,3,3,4,4,5,5,6,6,7,7- Dodecafluoro-1-heptyloxy group, 7,7,8,8,8-pentafluoro-1-octyloxy group, 3,3,4,4,5,5,6,6,7,7,8, 8,8-tridecafluoro-1-octyloxy group, 2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9, -hexadecafluoro -1-nonyloxy group, 4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-tridecafluoro-1-nonyloxy group, 7 , 7,8,8,9,9,10,10,10-nonafluoro-1-nonyloxy group, 3,3,4,4,5,5,6,6,7,7,8,8,9, 9,10,10,10-heptadecafluoro-1-decyloxy group, 4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11 -Heptadecafluoro-1-decyloxy group, 7,7,8,8,9,9,10,10,11,11,12,12,12-tridecafluoro-1-dodecyloxy group, 3,3, 4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11,12,12,12-Henicosafluoro-1-dodecyloxy group, 7, 7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,14-heptadecafluoro-1-tetradecylo Xyl group and branched type are 1H, 1H, 2,5-di (trifluoromethyl) -3,3-dioxaundecafluoro-1-nonyloxy group, 6- (perfluoro-1-methylethyl) ) -1-Hexyloxy group, 2- (perfluoro-1-methylbutyl) -1-ethoxy group, 2- (perfluoro-3-methylbutyl) ethoxy group, 2- (perfluoro-7-methyloctyl) ethoxy group , 2H-hexafluoro-2-popoxy group, 2,2-bis (trifluoromethyl) -1-propoxy group, etc.
Hydrogen atom; halogen atom such as fluorine, chlorine, bromine, iodine; nitro group; cyano group; hydroxy group; amino group; carboxyl group; sulfonic acid group; methyl group, ethyl group, n-propyl group, iso-propyl group, n-butyl group, iso-butyl group, sec-butyl group, t-butyl group, n-pentyl group, 2-methylbutyl group, 1-methylbutyl group, neo-pentyl group, 1,2-dimethylpropyl group, 1, 1-dimethylpropyl group, cyclo-pentyl group, n-hexyl group, 4-methylpentyl group, 3-methylpentyl group, 2-methylpentyl group, 1-methylpentyl group, 3,3-dimethylbutyl group, 2, 3-dimethylbutyl group, 1,3-dimethylbutyl group, 2,2-dimethylbutyl group, 1,2-dimethylbutyl group, 1,1-dimethylbutyl group, 3-ethylbutyl group, 2-ethylbutyl group, 1- Ethylbutyl group, 1,1,2-trimethylbutyl group, 1-ethyl-2-methylpropyl group cyclo-hexyl group, n-heptyl group, 2-methylhexyl group, 3-methylhexyl group, 4-methylhexyl group, 5-methylhexyl group, 2,4-dimethylpentyl group, n-octyl group, 2- Ethylhexyl group, 2,5-dimethylhexyl group, 2,5,5-trimethylpentyl group, 2,4-dimethylhexyl group, 2,2,4-trimethylpentyl group, n-nonyl group, 3,5,5- Trimethylhexyl group, n-decyl group, 4-ethyloctyl group, 4-ethyl-4,5-dimethylhexyl group, n-undecyl group, n-dodecyl group, 1,3,5,7-tetramethyloctyl group, 4-butyloctyl group, 6,6-diethyloctyl group, n-tridecyl group, 6-methyl-4-butyloctyl group, n-tetradecyl group, n-pentadecyl group, 3,5-dimethylheptadecyl group, 2, 6-dimethylheptadecyl group, 2,4-dimethylheptadecyl group, 2,2,5,5-tetramethylhexyl group, 1-cyclo-pentyl-2,2-dimethyl Rupuropiru group, 1-cyclo- pentyl-2,2-dimethylpropyl group, 1-cyclo- linear 1 to 20 carbon atoms such as hexyl-2,2-dimethylpropyl group, branched or cyclic alkyl group;
A halogenoalkyl group having 1 to 20 carbon atoms such as chloromethyl group, dichloromethyl group, fluoromethyl group, trifluoromethyl group, pentafluoroethyl group, nonafluorobutyl group;
Methoxy group, ethoxy group, n-propoxy group, iso-propoxy group, n-butoxy group, iso-butoxy group, sec-butoxy group, t-butoxy group, n-pentoxy group, iso-pentoxy group, neo-pentoxy group An alkoxy group having 1 to 20 carbon atoms such as n-hexyloxy group and n-dodecyloxy group;
C2-C20 alkoxyalkoxy groups such as methoxyethoxy group, ethoxyethoxy group, 3-methoxypropyloxy group, and 3- (iso-propyloxy) propyloxy group, or halogenoalkoxy having a halogen atom in the alkoxyalkoxy group An alkoxy group;
C 6-20 aryloxy groups such as phenoxy group, 2-methylphenoxy group, 4-methylphenoxy group, 4-t-butylphenoxy group, 2-methoxyphenoxy group, 4-iso-propylphenoxy group, or the like A halogenoaryloxy group containing a halogen atom in the aryloxy group;
A monoalkylamino group having 1 to 20 carbon atoms such as a methylamino group, an ethylamino group, an n-propylamino group, an n-butylamino group, and an n-hexylamino group, or a halogeno group containing a halogen atom in the monoalkylamino group; A monoalkylamino group;
A dialkylamino group having 2 to 20 carbon atoms such as dimethylamino group, diethylamino group, di-n-propylamino group, di-n-butylamino group, N-methyl-N-cyclohexylamino group, or the dialkylamino group; A halogenodialkylamino group containing a halogen atom;
Benzyl, nitrobenzyl, cyanobenzyl, hydroxybenzyl, methylbenzyl, dimethylbenzyl, trimethylbenzyl, dichlorobenzyl, methoxybenzyl, ethoxybenzyl, trifluoromethylbenzyl, naphthylmethyl, nitro An aralkyl group having 7 to 20 carbon atoms such as a naphthylmethyl group, a cyanonaphthylmethyl group, a hydroxynaphthylmethyl group, a methylnaphthylmethyl group, a trifluoromethylnaphthylmethyl group, or a halogenoaralkyl group containing a halogen atom;
Phenyl group, nitrophenyl group, cyanophenyl group, hydroxyphenyl group, methylphenyl group, dimethylphenyl group, trimethylphenyl group, dichlorophenyl group, methoxyphenyl group, ethoxyphenyl group, trifluoromethylphenyl group, N, N-dimethylamino An aryl group having 6 to 20 carbon atoms such as a phenyl group, a naphthyl group, a nitronaphthyl group, a cyanonaphthyl group, a hydroxynaphthyl group, a methylnaphthyl group, a trifluoromethylnaphthyl group, or a halogenoaryl group containing a halogen atom;
A pyrrolyl group, a thienyl group, a furanyl group, an oxazolyl group, an isoxazolyl group, an oxadiazolyl group, an imidazolyl group, a benzoxazolyl group, a benzothiazolyl group, a benzoimidazolyl group, a benzofuranyl group, an indolyl group, or the heteroaryl group A halogenoheteroaryl group containing a halogen atom;
Methylthio group, ethylthio group, n-propylthio group, iso-propylthio group, n-butylthio group, iso-butylthio group, sec-butylthio group, t-butylthio group, n-pentylthio group, iso-pentylthio group, 2-methylbutyl C1-C20 alkylthio group such as thio group, 1-methylbutylthio group, neo-pentylthio group, 1,2-dimethylpropylthio group, 1,1-dimethylpropylthio group, or halogen atom in the alkylthio group A halogenoalkylthio group containing:
An arylthio group having 6 to 20 carbon atoms such as a phenylthio group, a 4-methylphenylthio group, a 2-methoxyphenylthio group, a 4-t-butylphenylthio group, or a halogenoarylthio group containing a halogen atom in the arylthio group Can be mentioned.
Examples where A ₁ and A ₂ , A ₃ and A ₄ , A ₅ and A ₆ , A ₇ and A ₈ form a ring via a linking group include —CH ₂ CH ₂ CH ₂ CH ₂ —, —CH ₂ CH ₂ CH (NO ₂ ) CH ₂ —, —CH ₂ CH (CH ₃ ) CH ₂ CH ₂ —, —CH ₂ CH (Cl) CH ₂ CH ₂ — and the like can be mentioned.
Examples of the divalent metal represented by M include Cu, Zn, Fe, Co, Ni, Ru, Rh, Pd, Pt, Mn, Sn, Mg, Hg, Cd, Ba, Ti, Be, and Ca. It is done.
Examples of monosubstituted trivalent metals include Al-F, Al-Cl, Al-Br, Al-I, 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 ], Fe—Cl, Ru—Cl and the like can be mentioned.
Examples of disubstituted tetravalent metals include 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 , TiA ₂ , CrA ₂ , SiA ₂ , SnA ₂ , GeA ₂ [wherein A represents an alkyl group, a phenyl group, a naphthyl group and derivatives thereof], Si (OA) ₂ , Sn (OA) ₂ , Ge (OA) ₂ , Ti (OA) ₂ , Cr (OA ₂ [wherein A represents an alkyl group, a phenyl group, a naphthyl group, a trialkylsilyl group, a dialkylalkoxysilyl group and derivatives thereof], Si (SA) ₂ , Sn (SA) ₂ , Ge (SA) ₂ [ However, A is Alkyl group, a phenyl group, a naphthyl group and a derivative thereof], and the like.
Examples of oxymetals include VO, MnO, TiO and the like.

On the other hand, specific examples of R in the formula (2) include methyl group, ethyl group, n-propyl group, iso-propyl group, n-butyl group, iso-butyl group, sec-butyl group, t-butyl group. , N-pentyl group, 2-methylbutyl group, 1-methylbutyl group, neo-pentyl group, 1,2-dimethylpropyl group, 1,1-dimethylpropyl group, cyclo-pentyl group, n-hexyl group, 4-methyl Pentyl group, 3-methylpentyl group, 2-methylpentyl group, 1-methylpentyl group, 3,3-dimethylbutyl group, 2,3-dimethylbutyl group, 1,3-dimethylbutyl group, 2,2-dimethyl Butyl, 1,2-dimethylbutyl, 1,1-dimethylbutyl, 3-ethylbutyl, 2-ethylbutyl, 1-ethylbutyl, 1,1,2-trimethylbutyl, 1-ethyl-2- Methylpropyl, cyclo-hexyl, n-heptyl, 2-methylhexyl, 3-methylhexyl, 4-methylhexyl Group, 5-methylhexyl group, 2,4-dimethylpentyl group, n-octyl group, 2-ethylhexyl group, 2,5-dimethylhexyl group, 2,5,5-trimethylpentyl group, 2,4-dimethylhexyl Group, 2,2,4-trimethylpentyl group, n-nonyl group, 3,5,5-trimethylhexyl group, n-decyl group, 4-ethyloctyl group, 4-ethyl-4,5-dimethylhexyl group, n-undecyl group, n-dodecyl group, 1,3,5,7-tetramethyloctyl group, 4-butyloctyl group, 6,6-diethyloctyl group, n-tridecyl group, 6-methyl-4-butyloctyl Group, n-tetradecyl group, n-pentadecyl group, 3,5-dimethylheptadecyl group, 2,6-dimethylheptadecyl group, 2,4-dimethylheptadecyl group, 2,2,5,5-tetramethylhexyl 1-cyclo-pentyl-2,2-dimethylpropyl group, 1-cyclo-pentyl-2,2-dimethylpropyl group, 1-cyclo-hexyl-2,2-dimethylpropyl group And a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms such as groups.
Specific examples of Z ₁ , Z ₂ and Z ₃ include a hydrogen atom; halogen atoms such as fluorine, chlorine, bromine and iodine.

  On the other hand, the “display” applied to the present invention is a concept that broadly indicates what can display an image by emitting light, and the display described in the present invention is limited to a plasma display or a liquid crystal display. It is a concept including, for example, an SED, an organic EL, or a conventional cathode ray tube used. Of course, the liquid crystal display is not limited to a reflection type or a transmission type.

  If it is such, it can be set as the filter for a display which can be manufactured with high efficiency by making it melt | dissolve suitably with respect to solvents, such as methyl ethyl ketone and toluene, for example. In addition, by providing a filter with excellent light resistance in a display that is constantly irradiated with high-intensity light, it is possible to display a high-quality image over a long period of time, in other words, providing a display with excellent durability. It becomes possible to do.

For such a dye, if at least one of Z ₁ , Z ₂ , and Z ₃ is a fluorine atom, the intermolecular force is weakened, and the strong electron withdrawing effect results. As a result, it is possible to provide a material having better solubility and light resistance.

Further, as a more specific constitution of such a dye for reflecting the characteristics of the fluorine atom, one in which a trifluoroalkoxy group is adopted for any one of A _{1 to} A ₈ , that is, Z ₁ , Z ₂ and Z _{Examples in} which ₃ is a fluorine atom can be mentioned.

As a more preferable embodiment of A _{1 to} A ₈ shown in Formula (1), a halogenoalkoxy group shown in Formula (2) is arranged at the positions of A ₁ , A ₃ , A ₅ and A _7. be able to. In such an embodiment, more specifically, it is preferable that an alkyl group having 1 to 20 carbon atoms is arranged at the positions of A ₂ , A ₄ , A ₆ and A ₈ .

  And if it is set as the copper atom or oxyvanadium as a specific thing applicable to M in Formula (1), it will be considered that it can be made to dissolve more easily with respect to a solvent. In particular, if M is a copper atom, it is possible to provide a dye that is easily dissolved in a solvent such as toluene.

  And the manufacturing method of the filter for a display which concerns on this invention uses the pigment | dye mentioned above dissolved in methyl ethyl ketone or toluene, It is characterized by the above-mentioned. By doing so, it becomes possible to efficiently produce a display filter with high durability by dissolving such a dye at a high concentration.

On the other hand, the plasma display filter according to the present invention is characterized in that the above-described display filter is used in a plasma display. The plasma display according to the present invention includes at least a plasma display main body for displaying an image and a plasma display filter provided on the plasma display screen.
By doing so, the productivity and durability of the plasma display can be improved as compared with the conventional case.

  As a specific aspect of the filter for plasma display according to the present invention, a functional transparent layer provided on the outside air side and having antireflection properties and / or antiglare properties, and provided on the plasma display side, is adhered to the screen. A transparent adhesive layer, and a polymer film provided as a substrate between the functional transparent layer and the transparent adhesive layer, and at least one of the functional transparent layer, the polymer film, and the transparent adhesive layer, Mention may be made of pigments.

  As an aspect of such a filter for plasma display, the surface of the functional transparent layer has a visible light reflectance of 2% or less, and the minimum transmittance at a wavelength of 580 to 605 nm is 10 of the maximum transmittance at a wavelength of 615 to 640 nm. ˜85%, the maximum transmittance at a wavelength of 450 to 480 nm, the maximum transmittance at a wavelength of 510 to 535 nm, and the maximum transmittance at a wavelength of 615 to 640 nm are 45% to 85%, respectively, at a wavelength of 540 to 580 nm The minimum transmittance is 10 to 90% of the maximum transmittance at a wavelength of 510 to 535 nm, the transmittance is monotonously decreased as the wavelength is increased at a wavelength of 520 to 540 nm, and the minimum transmittance at a wavelength of 480 to 510 nm is a wavelength. Maximum transmittance at 450-480 nm and / or It can be mentioned as desirable to be indicative that 50 to 90% of the maximum transmittance in the long 510～535Nm, the characteristics such.

  In the case of a filter for plasma display, light in the near-infrared region is also emitted from the light source, and there is a problem that light of the wavelength interferes with a control signal emitted from the remote control device. Therefore, it is desirable that the filter for plasma display according to the present invention further contains a near-infrared absorbing dye having an absorption maximum in the wavelength range of 800 to 1100 nm. Specifically, the transmittance minimum at a wavelength of 800 to 1100 nm is desirably 20% or less.

  Moreover, as a characteristic of the filter for plasma displays, it is desirable to have a visible light transmittance of 30 to 85%.

  The visible light transmittance (Tvis) and the visible light reflectance (Rvis) in the present invention are calculated according to JIS (R-3106) from the wavelength dependency of the transmittance and reflectance.

  Furthermore, it is good also as what was equipped with the polymer film for the thickness raising which can contain a pigment | dye.

  On the other hand, the liquid crystal display filter according to the present invention is characterized in that the display filter described above is used in a liquid crystal display. In other words, the liquid crystal display according to the present invention includes a liquid crystal display filter.

  As a characteristic of such a liquid crystal display filter, the transmittance at a selective light absorption wavelength is preferably 1 to 50%.

And as a concrete aspect of the filter for liquid crystal displays concerning the present invention,
When it has at least a polymer molded body or a glass plate and a transparent adhesive layer laminated on the polymer molded body or the glass plate, it is desirable that the above-mentioned pigment is contained in the transparent adhesive layer. Can be mentioned. The transparent adhesive layer preferably contains an acrylic resin or a silicon resin as a main component.

  As another embodiment, such a dye may be contained in a polymer molded body, and the polymer molded body is preferably polyethylene terephthalate, triacetylcellulose, or polycarbonate.

  In addition, it is good also as what added the pigment | dye to the coating layer currently formed in the polymer molded object or the glass surface.

  In particular, since the pigment has high light resistance in the present invention, the liquid crystal display can be suitably used even if it is used by sticking it via an adhesive to the side surface portion that takes in light from the backlight on the light guide plate surface. Filter can be configured.

  In addition, you may employ | adopt the aspect used by affixing on a polarizing plate, or by affixing on a backlight surface through an adhesive.

  In addition, the liquid crystal display filter according to the present invention further includes other pigments having a selective light absorption function, so that a plurality of functions can be given to one filter, or a liquid crystal display filter can be configured. It is also possible to effectively reduce the number of parts to be processed.

  ADVANTAGE OF THE INVENTION According to this invention, it can be set as the filter for a display which can be produced efficiently by employ | adopting the pigment | dye excellent in the solubility with respect to a solvent. In addition, since the produced display filter has excellent light resistance, it can continue to effectively absorb light in a predetermined wavelength region even when irradiated with light for a long period of time. As a result, it is possible to provide a display filter with excellent productivity and high durability. As a result, it is possible to provide a plasma display and a liquid crystal display with high productivity and high durability as well. .

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
<First embodiment>
As shown in FIG. 1, the display filter 1 according to the present embodiment is a so-called so-called plasma display PD (FIG. 2), liquid crystal display LD (FIG. 3), other SED display, organic EL display, or the like. It can be widely used in display devices, that is, displays D.

  Here, the display filter 1 according to the present invention is provided in a light path from the light emitting source to the outermost surface of the visual recognition unit, and has a function of selectively absorbing light of a specific wavelength. 1 and the selective light absorption wavelength is at least the dye P and / or Q existing between 570 and 605 nm.

  And it is characterized by containing a tetraazaporphyrin compound as represented by these dyes P and Q.

  Hereinafter, the dyes P and Q will be described.

P and Q correspond to the tetraazaporphyrin compound represented by the formula (1) [Chemical Formula 7]. A ₁ , A ₃ , A ₅ and A ₇ are halogenoalkoxy groups, but a halogenoalkoxy group may be adopted at any position in A _{1 to} A ₈ .

  More specifically, such a halogenoalkoxy group is represented by the formula (2) [Chemical Formula 8].

At least one of the halogenoalkoxy groups is represented by the formula (2), and a trifluoroalkoxy group is formed by arranging a fluorine atom as Z ₁ , Z ₂ and Z ₃ . Here, in both P and Q, a tert-butyl group among alkyl groups having 1 to 20 carbon atoms is arranged at the positions of A ₂ , A ₄ , A ₆ and A ₈ .

  Here, P and Q are those in which a copper atom and oxyvanadium are respectively arranged at the position of M in the general formula (1). By doing so, it can be suitably dissolved in commonly used organic solvents such as methyl ethyl ketone and toluene.

  And if it is the pigment | dyes P and Q as mentioned above, the said pigment | dyes P and Q can be suitably implement | achieved, and the manufacturing method of the filter 1 for a display which concerns on this invention characterized by using in methyl ethyl ketone or toluene can be implement | achieved suitably. It will be a thing.

  As described above, the display filter 1 according to the present embodiment includes the above-described dyes P and Q, and is manufactured with high efficiency by being preferably dissolved in a solvent such as methyl ethyl ketone or toluene in the manufacturing stage. The display filter 1 can be made. In addition, by providing a filter with excellent light resistance in a display that is constantly irradiated with high-intensity light, it is possible to display a high-quality image over a long period of time, in other words, providing a display with excellent durability. It becomes possible to do.

If such dyes P and Q have at least one of Z ₁ , Z ₂ and Z ₃ as a halogen atom, specifically a fluorine atom, the intermolecular force is high. It is considered that the characteristics of halogen atoms, particularly fluorine atoms, are reflected, and as a result, it is possible to provide a more excellent light resistance.

In addition, as a more specific configuration of the dyes P and Q for reflecting the characteristics of the fluorine atom, a trifluoroalkoxy group is adopted for any one of A _{1 to} A ₈ .

  And as a concrete thing applicable to M in Formula (1), it is thought that it shall become easier to melt | dissolve with respect to a solvent by setting it as the copper atom or oxyvanadium. In particular, the dye P in which M is a copper atom can be provided as a dye that is easily dissolved in a commonly handled solvent such as toluene.

And according to the display filter 1 and the manufacturing method thereof according to the present invention, these dyes P and Q are used by being dissolved at a high concentration, and further, the excellent light resistance of the dyes P and Q itself makes them durable. It is possible to efficiently produce a high display filter 1.
<Second embodiment>
Next, the aspect which applied suitably the filter 2 for plasma displays mentioned above to plasma display PD is explained in full detail. In addition, this embodiment shows an example in which the present invention is applied to the plasma display PD, and does not limit the present invention.

  The plasma display filter 2 according to the present invention is obtained by suitably applying the display filter 1 according to the first embodiment to a plasma display PD. That is, as shown in FIG. 2, the plasma display PD according to the present invention includes at least a plasma display body PD1 for displaying an image and a plasma display filter 2 provided on the plasma display PD screen. To do.

  Hereinafter, an example of the configuration of the plasma display PD and the plasma display filter 2 will be described with reference to the drawings.

  As shown in FIG. 2, the plasma display filter 2 is provided on the outside air side, and is provided on the plasma display PD side with a functional transparent layer 21 having antireflection and / or antiglare properties, and adheres to the screen. And a polymer film 23 provided as a substrate between the functional transparent layer 21 and the transparent adhesive layer 22. And the pigment | dyes P and Q which concern on the said embodiment are contained in at least 1 layer among these functional transparent layers 21, the polymer film 23, and the transparent adhesion layer 22, It is characterized by the above-mentioned. In other words, at least one of the functional transparent layer 21, the polymer film 23, and the transparent adhesive layer 22 includes the dyes P and Q, thereby constituting the display filter 1 according to the first embodiment. It is what. In addition, as shown in the drawing, specifically, a polymer film 24 for increasing the thickness capable of containing the pigments P and Q may be further provided.

  In this embodiment, in addition to the dyes P and Q described in the first embodiment, a near-infrared absorbing dye NR is further included, which will be described later.

  Hereinafter, the plasma display filter 2 will be described.

  The plasma display filter 2 has a visible light transmittance of 30 to 85% as a whole.

  As described above, the functional transparent layer 21 is provided on the outside air side and has antireflection properties and / or antiglare properties. Specifically, one or more of hard coat properties, antireflection properties, antiglare properties, antistatic properties, antifouling properties, gas barrier properties, and UV protection properties, depending on the installation method on the display and the required functions It has the function of The visible light reflectance of the surface of the functional transparent layer 21 having antireflection properties is desirably 2% or less, preferably 1.3% or less, and more preferably 0.8% or less.

  As described above, the transparent adhesive layer 22 can be suitably attached to the plasma display main body PD1 by having adhesiveness.

  As described above, the polymer film 23 or the polymer film 24 for raising the bulk is provided as a substrate between the functional transparent layer 21 and the transparent adhesive layer 22, and the functional transparent layer 21 and the transparent adhesive are provided. Various existing materials and thicknesses can be adopted as long as the layer 22 can be favorably supported and has transparency.

  Here, the plasma display filter 2 according to the present embodiment has the following characteristics.

  First, this plasma display filter 2 is used to improve the color purity of red light emission and further green light emission, by using dyes P and Q having absorption maximums at wavelengths of 570 nm to 605 nm, thereby shielding electromagnetic waves at wavelengths of 570 nm to 605 nm. The minimum transmittance of the body is configured to be 80% or less with respect to the transmittance at the required peak position of red light emission.

  Specifically, it is remarkable that red light emission is particularly orange in the plasma display PD. In this embodiment, which is the cause, red light emission is reduced by reducing the light emission with a wavelength of 580 nm to 605 nm by the display filter 1. Color purity can be improved. The reduction is performed by forming a dye layer containing dyes P and Q having an absorption wavelength in this wavelength region. In this case, it is necessary that the light transmission at a wavelength of 615 nm to 640 nm where the emission peak is red is not significantly impaired by the display filter 1. In general, a dye has a broad absorption range, and even if it has a desired absorption peak, it absorbs light of a suitable wavelength by absorption of the tail. Therefore, even if the amount of the dye having absorption at the wavelength of light emission to be absorbed is large, it is reduced to suitable light emission and causes a significant decrease in luminance. Therefore, in this embodiment, the minimum transmittance at wavelengths of 580 nm to 605 nm is 10 to 85% of the maximum transmittance at wavelengths of 615 nm to 640 nm, preferably 20 to 70%, more preferably 20% to 45%. By setting it to 1, the color purity of red light emission is improved, and the light emission luminance is significantly impaired. When light emission by Ne is present, the orange light emission can be reduced, so that the color purity of light emission from the RGB display cell can be improved.

  Further, in order not to significantly impair the emission luminance when the display filter 1 is mounted, the maximum transmittance at wavelengths of 450 n to 480 m where blue, green, and red emission peaks exist, the maximum transmittance at wavelengths of 510 to 535 nm, The maximum transmittance at a wavelength of 615 to 640 nm is preferably 45% or more. The maximum transmittance of the display filter 1 in these wavelength ranges is 85% or less depending on each component.

  Furthermore, as with the improvement of the color purity of the red light emission, the improvement of the color purity of the green light emission is achieved by changing the wavelength of 540 nm to 580 nm, which is adjacent to the long wavelength side of the green having a wavelength of about 510 to 535 nm. What is necessary is just to reduce to some extent. The minimum transmittance of the display filter 1 at a wavelength of 540 to 580 nm is 10 to 90%, preferably 20 to 50% of the maximum transmittance at a wavelength of 510 to 535 nm. This prevents the green from becoming yellowish and improves its color purity.

  Furthermore, similarly, in order to improve the color purity of blue light emission and the color purity of green light emission, it is only necessary to reduce unnecessary light emission at wavelengths of 480 nm to 510 nm between the respective suitable light emission wavelengths. It is preferable that the minimum transmittance of the filter 1 for use is 50 to 90%, preferably 50 to 75% of the maximum transmittance at a wavelength of 450 to 480 nm and / or the maximum transmittance at a wavelength of 510 to 535 nm. Thereby, it can prevent that blue becomes green and / or green becomes blue, and can improve the color purity. The improvement in color purity can improve the contrast.

  In addition, the green light emission peak of the plasma display PD may be slightly longer than the green color required by the NTSC system, for example, on the yellowish green side, and the long wavelength side of the light emission peak is trimmed to eliminate the yellowishness. It is also effective to improve the color purity of green light emission to have a peak on the short wavelength side. That is, at 520 to 540 nm, the transmittance may monotonously decrease as the wavelength increases.

  Further, as described above, it further includes a near-infrared absorbing dye NR for efficiently cutting near-infrared rays in the vicinity of 800 to 1000 nm emitted from the plasma display PD. For this reason, the transmittance minimum at a wavelength of 800 to 1100 nm is 20% or less. For this reason, it is possible to prevent malfunctions of the peripheral electronic devices without adversely affecting the wavelengths used by the remote control, transmission optical communication, and the like.

In addition, in order to prevent the pigment contained in the electromagnetic wave shielding body from being emitted from the display or being deteriorated by the ultraviolet rays included in the external light, the functional transparent layer 21 preferably has an ultraviolet cut property. . For example, a functional transparent layer 21 having an antireflection film composed of an inorganic thin film single layer or a multilayer that absorbs ultraviolet rays, a base material that forms a functional transparent film containing an ultraviolet absorber, or a hard coat film. is there. The type and concentration of the ultraviolet absorber are not particularly limited.
Further, at least one layer of the transparent adhesive layer 22 may contain an ultraviolet absorber.
It is important that the UV-cutting member is disposed between the surface on which the UV light is incident and the layer containing the dye, and the UV-cutting property varies depending on the durability of the dye and is not particularly limited.
<Third embodiment>
Next, a mode in which the display filter 1 shown in the first embodiment is suitably applied to the liquid crystal display LD will be described in detail.

  The liquid crystal display LD according to the present invention is configured by applying the display filter 1 according to the first embodiment to the liquid crystal display main body LD1 capable of displaying a screen.

  Here, the liquid crystal display filter 3 according to the present embodiment has a specific structure in the liquid crystal display LD by laminating a transparent adhesive layer 32 on a plate-shaped polymer molded body 31 or a glass plate 31g having transparency. It can be suitably arranged at the position. And the filter 3 for liquid crystal displays is suitably comprised by including the pigment | dyes P and Q shown in 1st embodiment in the polymer molded object 31 or the transparent adhesion layer 32. FIG.

  Further, the liquid crystal display filter 3 according to the present embodiment may be one in which a coating layer is provided on the surface of the glass plate 31g or the polymer molded body 31, and the coating layer contains the dyes P and Q. Further, as will be described later, dyes P and Q may be included in the constituent elements of the liquid crystal display LD.

  The polymer molded body 31 has transparency, and the dyes P and Q are contained in the polymer molded body 31. Various materials can be used as the material constituting the polymer molded body 31. From the viewpoints of quality and processing characteristics, it is desirable to use polyethylene terephthalate, triacetyl cellulose, or polycarbonate.

  The transparent adhesive layer 32 can be suitably attached to the liquid crystal display body LD1 while ensuring transparency. Specifically, the transparent adhesive layer 32 is mainly composed of an acrylic adhesive or a silicon adhesive mainly composed of an acrylic resin or a silicon resin, and these adhesives contain dyes P and Q. Is desirable.

  Here, being transparent means that the light transmittance at a wavelength of 400 to 700 (nm) at a practical thickness is 40% or more. And the transmittance | permeability in the selective light absorption wavelength which concerns on the pigment | dyes P and Q has shown the characteristic that it is 1 to 50%.

  Here, the specific aspect which uses the filter 3 for liquid crystal displays mentioned above for liquid crystal display main body LD1 is demonstrated.

  The liquid crystal display main body LD1 is a transparent film provided on a polarizing plate 42, an alignment film 43, and an alignment film 43 as a light guide plate in order from the backlight 41, as shown in a schematic cross section in FIGS. The electrode 44, the liquid crystal 45, the beads 45 b as a spacer for securing a region for arranging the liquid crystal 45, the alignment film 46, the transparent electrode 47, the three color filters 48 (48 b, 48 g, 48 r), and the polarizing plate 49 are arranged in this order. ing.

  And the filter 3 for liquid crystal displays which concerns on this embodiment is used by affixing via the adhesive adhesive on the side part 40 which takes in the light from the backlight on the light-guide plate surface. Specifically, as shown in FIG. 4, it is used by sticking to the surface of the backlight 41 via an adhesive, or as shown in FIG. 5, it is used by sticking to the polarizing plate 42. Is desirable. In this case, the pressure-sensitive adhesive for attaching the liquid crystal display filter 3 includes both the transparent pressure-sensitive adhesive layer 32 and other pressure-sensitive adhesives that do not contain the dyes P and Q. Moreover, as shown in FIG. 6, you may affix on the polarizing plate 49 provided in the surface side of liquid crystal display main body LD1.

  Further, even in the present embodiment, as described above, it has a selective light absorbing function such as the near infrared absorbing dye NR shown in the second embodiment for efficiently cutting near infrared light in the vicinity of 800 to 1000 nm. Other pigments may be further included.

  In addition to the above-described aspects, the optical filter according to the present invention may be obtained by adding the dyes P and Q to the color filter. In that case, the dyes P and Q may be contained in the green and red coloring portions. Usually, it is desirable that the pigments to be used contain the dyes P and Q in advance.

  Although the embodiments of the present invention have been described above, the specific configuration of each unit is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, the location where the dyes P and Q are included is not limited to one location, and may be included in a plurality of locations in the plasma display PD or the liquid crystal display LD.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

Examples of the present invention will be described in detail below, but the present invention is not limited to the examples.
1. Solubility test <test material>
Example 1
The dye P in the above embodiment, that is, the tetraazaporphyrin compound represented by the following [Chemical 9] was used.

Example 2
The dye Q in the above embodiment, that is, the tetraazaporphyrin compound shown in the following [Chemical Formula 10] was used.

Comparative Example 1
PD-319 manufactured by Mitsui Chemicals, that is, a tetraazaporphyrin compound represented by the following [Chemical Formula 11] was used.

Comparative Example 2
PD-311 manufactured by Mitsui Chemicals, that is, a tetraazaporphyrin compound represented by the following [Chemical Formula 12] was used.

Comparative Example 3
A tetraazaporphyrin compound represented by the following [Chemical Formula 13] was tested.

<Test method>
The said Example 1, Example 2, the comparative example 1, the comparative example 2, and the comparative example 3 were tested, and the solubility (W / V) with respect to ethyl methyl ketone and toluene was measured, respectively.
<Test results>
The test results are shown in Table 1.

As is clear from Table 1, the dyes according to Example 1 and Example 2 showed practically sufficient solubility in methyl ethyl ketone and toluene as solvents, so that they can be dissolved in these solvents and suitably used for display filters. It has been found that 1 can be produced. This is considered to be due to the influence of the kind of metal atom for constituting the complex in each example and each comparative example. However, Example 1 which is the same copper complex, and Comparative Example 1 and Comparative Example 3 have greatly different solubility in methyl ethyl ketone. From this, it is considered that the dyes according to each Example have a halogenoalkoxy group, specifically, a trifluoroalkoxy group, which greatly improves the solubility in organic solvents.
2. Light resistance test <Test material>
Each dye according to Example 1, Example 2, Comparative Example 1, Comparative Example 2, and Comparative Example 3 related to the solubility test was used.
<Test method>
75.0 g of polymethacrylate, 152.6 g of chlorobenzene, 59.6 g of toluene, 62.5 g of ethyl acetate and 55.0 g of acetone were mixed and sufficiently stirred to prepare a polymer solution. 5.4 g of this polymer solution was sampled, and 6 mg of the dye according to Example 1 was added thereto to prepare a dye polymer solution. Then, 450 μl of a dye polymer solution was collected and applied onto a 5 cm × 20 cm polypropylene sheet by a rod coater method. After drying at 90 ° C. for 3 minutes, the film was aged at room temperature overnight to obtain a thin film of a dye for use in the light resistance test. Moreover, the thin film film of each pigment | dye which concerns on Example 2, the comparative example 1, the comparative example 2, and the comparative example 3 was obtained similarly. The thus obtained thin film of each dye was exposed to a fluorescent lamp of 20,000 lux for 88 hours, and the transmittance of the thin film of each dye was measured. The storage rate of each pigment was calculated from these measured values and the transmittance measured before exposure.
<Test results>
The test results are shown in Table 1.

  As is clear from Table 2, Example 1 and Example 2 showed higher light resistance than Comparative Example 1, Comparative Example 2 and Comparative Example 3. From this, when Example 1 and Example 2 are employ | adopted for the filter 1 for a display, it can be considered that it contributes enough to the improvement of the durability of a display. This is because the dyes according to Example 1 and Example 2 structurally have a halogenoalkoxy group, specifically, a trifluoroalkoxy group, and therefore, according to Comparative Example 1, Comparative Example 2, and Comparative Example 3. It is considered that the light resistance is higher than that of the dye.

  As described above, Example 1 and Example 2 shown in this example are excellent in solubility, so that the display filter according to the present invention can be suitably manufactured. In addition, since the light resistance is superior to each comparative example, it is considered that the light resistance can be effectively contributed to the manufacture of a display filter having excellent durability.

The typical explanatory view concerning a first embodiment of the present invention. The typical explanatory view concerning a second embodiment of the present invention. The typical explanatory view concerning a third embodiment of the present invention. Structure explanatory drawing which concerns on the same embodiment. Same as above. Same as above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Display filter 2 ... Plasma display filter 3 ... Liquid crystal display filter,
DESCRIPTION OF SYMBOLS 21 ... Functional transparent layer 22, 32 ... Transparent adhesion layer 23, 24 ... Polymer film 31 ... Polymer molding 31g ... Glass plate 40 ... Side part (side part) which takes in light
41 ... Backlight 42, 49 ... Polarizing plate D ... Display PD ... Plasma display LD ... Liquid crystal display PD1 ... Plasma display body P, Q ... Dye NR ... Near infrared absorbing dye

Claims (35)

A display filter having a function of selectively absorbing light of a specific wavelength, which is provided in a light path from a light emitting source to the outermost surface of a visual recognition unit,
A filter for display having at least a dye having a selective light absorption wavelength of 570 to 605 nm, and the dye is a tetraazaporphyrin compound represented by the formula (1) [Chemical Formula 1] .

Wherein (1), at least one of A ₁ to A ₈ represents at least a halogenoalkoxy group having 1 to 20 carbon atoms, each independently other than the halogenoalkoxy group in the A ₁ to A _8, a hydrogen atom , Halogen atom, nitro group, cyano group, hydroxy group, amino group, carboxyl group, sulfonic acid group, linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, alkoxy group having 1 to 20 carbon atoms, carbon number 1-20 halogenoalkoxy groups, C6-C20 aryloxy groups, C1-C20 monoalkylamino groups, C2-C20 dialkylamino groups, C7-C20 dialkylamino groups, carbon Represents an aralkyl group having 7 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, a heteroaryl group, an alkylthio group having 6 to 20 carbon atoms, and an arylthio group having 6 to 20 carbon atoms. And a ring excluding an aromatic ring may be formed via a linking group, and M is two hydrogen atoms, a divalent metal atom, a divalent monosubstituted metal atom, a tetravalent disubstituted metal atom, Or represents an oxymetal atom. ] 2. The display filter according to claim 1, wherein at least one of the halogenoalkoxy groups is represented by the formula (2) [Chemical Formula 2].

[In the formula (2), Z ₁ , Z ₂ and Z ₃ represent a halogen atom or a hydrogen atom, and at least one of the Z ₁ , Z ₂ and Z ₃ represents a halogen atom, An alkyl group having 1 to 20 carbon atoms or a halogenoalkyl group is represented. ] The display filter according to claim ₁ , wherein at least one of Z ₁ , Z ₂ , and Z ₃ is a fluorine atom. The display filter according to claim ₃ , wherein Z ₁ , Z ₂ and Z ₃ are fluorine atoms. 5. The display filter according to claim 2, wherein A ₁ , A ₃ , A ₅ and A ₇ are halogenoalkoxy groups represented by the formula (2) [Chemical Formula 2]. The display filter according to claim 5, wherein the A ₂ , A ₄ , A ₆ and A ₈ are alkyl groups having 1 to 20 carbon atoms. The display filter according to claim 1, wherein M is a copper atom or oxyvanadium. The display filter according to claim 1, wherein M is a copper atom. A method for manufacturing a display filter according to any one of claims 1 to 8,
A method for producing a display filter, wherein the dye is dissolved in methyl ethyl ketone. A method for manufacturing a display filter according to any one of claims 1 to 8,
A method for producing a display filter, wherein the dye is dissolved in toluene. 8. A plasma display filter, wherein the display filter according to claim 1 is used in a plasma display. The display filter according to any one of claims 1 to 7 is used for a plasma display main body capable of displaying an image,
A functional transparent layer provided on the outside air side and having antireflection and / or antiglare properties;
A transparent adhesive layer provided on the plasma display side for bonding to the screen;
A polymer film provided as a substrate between the functional transparent layer and the transparent adhesive layer;
A filter for plasma display, wherein the dye is contained in at least one of a functional transparent layer, a polymer film, and a transparent adhesive layer. 12. The filter for plasma display according to claim 11, wherein the visible light reflectance is 2% or less on the surface of the functional transparent layer. 14. The filter for plasma display according to claim 11, wherein the minimum transmittance at a wavelength of 580 to 605 nm is 10 to 85% of the maximum transmittance at a wavelength of 615 to 640 nm. 15. The maximum transmittance at a wavelength of 450 to 480 nm, the maximum transmittance at a wavelength of 510 to 535 nm, and the maximum transmittance at a wavelength of 615 to 640 nm are 45% to 85%, respectively. The filter for plasma displays as described. 16. The plasma display filter according to claim 11, wherein the minimum transmittance at a wavelength of 540 to 580 nm is 10 to 90% of the maximum transmittance at a wavelength of 510 to 535 nm. The filter for plasma display according to claim 11, wherein the transmittance monotonously decreases as the wavelength becomes longer at wavelengths of 520 to 540 nm. The minimum transmittance at a wavelength of 480 to 510 nm is 50 to 90% of the maximum transmittance at a wavelength of 450 to 480 nm and / or the maximum transmittance at a wavelength of 510 to 535 nm. 15. A filter for plasma display according to claim 15, 16 or 17. 19. The filter for plasma display according to claim 11, further comprising a near infrared absorbing dye having an absorption maximum in a wavelength range of 800 to 1100 nm. 20. The plasma display filter according to claim 19, wherein the transmittance minimum at a wavelength of 800 to 1100 nm is 20% or less. 21. The filter for plasma display according to claim 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20, which has a visible light transmittance of 30 to 85%. The filter for plasma display according to claim 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 or 21, further comprising a polymer film for increasing a thickness capable of containing a pigment. A plasma display body for displaying images;
23. A plasma display comprising at least a filter for plasma display according to any one of claims 11 to 22 provided on a plasma display screen. A liquid crystal display filter, wherein the display filter according to claim 1 is used for a liquid crystal display. 25. The filter for liquid crystal display according to claim 24, wherein the transmittance at a selective light absorption wavelength is 1 to 50%. At least a polymer molded body or a glass plate, and a transparent adhesive layer laminated on the polymer molded body or the glass plate,
The liquid crystal display filter according to claim 24 or 25, wherein the pigment is contained in a transparent adhesive layer. 27. The liquid crystal display filter according to claim 26, wherein the transparent adhesive layer contains an acrylic resin or a silicon resin as a main component. Having at least a polymer molded body,
The liquid crystal display filter according to claim 23, 24, 26 or 27, wherein the dye is contained in the polymer molded body. 29. The liquid crystal display filter according to claim 28, wherein the polymer molding is polyethylene terephthalate, triacetyl cellulose, or polycarbonate. 30. The liquid crystal display filter according to claim 24, 25, 26, 27, 28, or 29, wherein the pigment is contained in a coating layer formed on a polymer molded body or glass surface. 31. The liquid crystal display according to claim 24, 25, 26, 27, 28, 29, or 30, wherein the liquid crystal display is used by being attached to a side surface portion that takes in light from a backlight on the surface of the light guide plate through an adhesive. Filter. 32. The liquid crystal display filter according to claim 24, 25, 26, 27, 28, 29, 30 or 31, which is used by being attached to a polarizing plate. 33. The liquid crystal display filter according to claim 24, 25, 26, 27, 28, 29, 30, 31 or 32, wherein the filter is used by sticking to a backlight surface via an adhesive. 34. The liquid crystal display filter according to claim 24, 25, 26, 27, 28, 29, 30, 31, 32 or 33, which further contains another dye having a selective light absorption function. 35. A liquid crystal display comprising the liquid crystal display filter according to any one of claims 24 to 34.

Images