JP2000137111A - Filter for display device, and display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter for display device for suppressing the deterioration of display quality such as ghost or blurring of an outline, and for adjusting transmittance in a wide range while utilizing excellent characteristics of a reflection preventing film including an absorbing film with a low reflectivity in a wide range of a visible light area. SOLUTION: This filter for display device is provided with a light absorbing filter layer 2 on a transparent substrate 1 and a reflection preventing film 5 constituted of two or more layers on the light absorbing filter layer, and the reflection preventing film constituted of two or more layers is provided with at least one absorbing layer 3. Then, the filter for a display device is adhered to a display device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device filter having an antireflection film and capable of adjusting the amount of transmitted light, and a display device having the filter attached to a display surface.

[0002]

2. Description of the Related Art When an object is viewed through a transparent material, if the reflected light is strong and the reflected image is unclear, it is annoying to the viewer. For example, in a spectacle lens, a reflected image called a ghost, a flare, or the like may be caused to cause discomfort to an eye. In the case of a looking glass or the like, the contents may be unclear due to light reflected on the glass surface.

[0003] As a countermeasure for these, for example,
In order to prevent reflection, a method in which a substance having a refractive index different from that of the base material is coated on the base material by a vacuum deposition method or the like has been performed.

[0004] In this case, it is known that the selection of the thickness of the substance covering the substrate is important in order to maximize the antireflection effect. For example, in the case of a single-layer film, selecting a substance having a refractive index lower than that of the base material to １ ／ or an odd multiple of the optical wavelength for the optical film thickness has a minimum reflectance, that is, a maximum reflectance. It is known to provide transmittance. Here, the optical film thickness is given by the product of the refractive index of the film forming material and the film thickness of the film.

Further, as a method of selecting the film thickness, it is possible to form an anti-reflection film composed of a plurality of layers. ,
Vol. 9, No. Some proposals have been made on pages 8, 17 (1971) and the like.

The material for forming the film of these antireflection films is mainly an inorganic oxide or an inorganic halide, and generally has both low reflectance and high transmittance in the visible region.

[0007] Even on the display surface of a display device such as a cathode ray tube, external light or illumination light may be reflected in the screen and the image may be difficult to see. Is often provided with an anti-reflection film.

In such a display device, it is necessary to adjust the transmittance of the display panel in a wide range (20 to 92%) depending on its structure and use, for example, to improve the contrast. For example, in the panel glass of a cathode ray tube or the acrylic front plate frame of a transmission type projector (rear projector), the transmittance of the panel base material itself is changed,
The transmittance is adjusted.

However, the display panel also has a role of maintaining the mechanical strength of the display device. According to the method of changing the transmittance of the panel substrate, the display panel becomes thick due to an increase in the size of the display device. In such a case, it is necessary to prepare a panel base material whose transmittance is changed by changing the degree of dyeing or the concentration of the pigment, for example, and thus the panel becomes diversified, and the cost increases, which is not desirable.

Further, in the panel glass of the cathode ray tube,
From the viewpoint of mechanical strength, the film is formed thin at the center and thick at the end, and has a problem that the transmittance differs between the center and the end. In particular, in recent years, in a cathode ray tube having a substantially flat display surface, the difference in transmittance between the center and the end is further increased in order to reinforce mechanical strength.

Meanwhile, among heat ray shielding films which are filters using an optical thin film, there are some which can adjust the transmittance by forming an absorbing film by using a metal thin film. For example, Au, Pt,
Pd, Ni-Cr, Al, In 2 O 3 -SnO 2 (IT
O), CuI, CuS, etc. are used (see “Handbook of Preparation and Evaluation of Thin Films and Their Application Technology”, Fuji Techno System, p. 568, etc.). The visible light transmittance of these films is preferably 60 to 90%.

As an antireflection film, there is a filter designed to incorporate such an absorption film.
There is a configuration called a dark mirror or a selective absorption mirror. As the antireflection film in the visible light region, a film having a configuration called a dark mirror can be used. For example, “Optical Users' Handbook”, Nikkan Kogyo Shimbun, p. 160) is a combination of an absorption film and a dielectric film. Dark mirrors consisting of layers have been proposed.

For example, in Japanese Patent Application Laid-Open No. 9-156964, in the configuration of this dark mirror, a metal nitride such as titanium, zirconium and hafnium, that is, TiN, ZrN, HfN or the like is used as an absorbing film. It has been suggested that low reflection can be obtained in a wide range of the visible light region.

An example of this application is disclosed in US Pat.
Japanese Patent Laid-Open No. 091,244 discloses that low reflection in the visible light region and transmittance adjustment are simultaneously performed by a four-layer or six-layer antireflection film using titanium nitride (TiN) as an absorption film. Have been.

However, although these antireflection films have the excellent property of having a low reflectance over a wide range of the visible light region, they also have a low reflectance of, for example, 1 / (1) of the light wavelength, as described above. There is a restriction that the film thickness must exactly match the film thickness, such as 4. In addition, since the refractive index of the substance used therein is greatly restricted in the design of the antireflection film, the transmittance is limited to a certain narrow range determined by the substance that can be used as the absorbing film, and the transmittance is reduced. It cannot be adjusted freely over a wide range.

When a substance used as an absorption film is used as a part of an antireflection film, the reflectance of light from the inner surface is high, while the reflectance of the surface is low. ~ 20%. In the display device, such reflection of light from the inner surface causes display characters or drawings to be double-projected (ghost) or blurs the outline, thereby significantly deteriorating the display quality. There were drawbacks.

[0017]

SUMMARY OF THE INVENTION Therefore, the present invention is intended to blur ghosts and contours while taking advantage of the excellent characteristics of an antireflection film including an absorption film having a low reflectance over a wide range of visible light. It is an object of the present invention to provide a filter for a display device, which suppresses deterioration of display quality such as display quality and can adjust transmittance in a wide range.

[0018]

In order to solve the above-mentioned problems, the present invention provides a display device having a light-absorbing filter layer on a transparent substrate and an antireflection film comprising two or more layers on the light-absorbing filter layer. A filter for a display device, wherein at least one of the two or more antireflection films is an absorption layer.

In the display filter, the above-mentioned 2
It is preferable that the antireflection film composed of layers or more has a laminated structure of at least a light absorbing layer and a dielectric layer.

The present invention also relates to a display device having a display surface, comprising: a light-absorbing filter layer on the display surface; and two or more layers in which at least one layer is an absorbing layer on the light-absorbing filter layer. Provided is a display device comprising a display device filter having an anti-reflection film.

In the display device of the present invention, the above-mentioned 2
It is preferable that the antireflection film composed of layers or more has a laminated structure of at least a light absorbing layer and a dielectric layer.

In the display device according to the present invention, the display device filter may be a front plate of the display device.

A conventional anti-reflection film having no absorption layer (AR
In the case of the display device having the (film) 32, as shown in FIG. 9A, the display device is made of a material having a low reflectance.
The back surface reflection is small, and a virtual image or the like hardly occurs, and the display quality is high. However, the transmittance could not be freely adjusted in a wide range.

As shown in FIG. 9B, when an antireflection film 32 'having an absorption layer is used, the transmittance can be freely adjusted in a wide range, but the back surface of the antireflection film is not required. Due to the reflection, the virtual image 34 was easily generated, and the display quality was low.

According to the present invention, as shown in FIG. 9 (c), the excellent characteristics of the antireflection film 32 'having an absorption layer that provides a display device filter 35 capable of adjusting the transmittance over a wide range can be obtained. A filter for display devices that can control the deterioration of display quality and adjust transmittance over a wide range while utilizing
And a display device having the filter.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a filter for a display device of the present invention and a display device having the filter will be described in detail. As the transparent substrate that can be used in the present invention, for example, a glass plate or a transparent plastic plate,
A transparent plastic film can be used.

As the glass substrate, any transparent glass can be used without any particular limitation. I. -537, edited by The Chemical Society of Japan, etc. Specifically, soda glass,
Examples include lead glass, hard glass, quartz glass, and liquid crystal glass.

When used as a cathode ray tube, strontium (Sr) or barium (B
Silicate glass containing a) or the like is preferably used. Also, when used as a liquid crystal display device, as the transparent substrate,
Alkali-free glass is preferably used.

As the transparent plastic material, any material can be used without particular limitation as long as it is a substrate made of a transparent (including colorless transparent and colored transparent) organic polymer. Transparency, refractive index, dispersibility, etc. Optical properties, impact resistance, heat resistance,
In view of various properties such as durability, for example, the following polymers are preferable.

(1) Acrylic resin As the acrylic resin, a main component is a polymer of acrylic acid ester (methacrylic acid ester) and its derivatives such as acrylamide and acrylonitrile, and other acrylic acid ester, methacrylic acid ester and olefin. And a copolymer resin with another polymerizable monomer such as styrene.

(2) Polycarbonate Polycarbonate has the general formula 1

[0032]

Embedded image

(Wherein, R represents an organic group and n represents an arbitrary natural number), for example, a polycarbonate produced from bisphenol A and phosgene or diphenyl carbonate, diethylene glycol bis Allyl carbonate and the like can be mentioned. Modified polycarbonate obtained from polycarbonate and methacrylic resin can also be used.

(3) Polyalkylene Terephthalate Examples of polyalkylene terephthalate include polycondensation products of terephthalic acid and polyol such as polyethylene terephthalate and polybutylene terephthalate.

(4) (Brominated) bisphenol A type di (meth) acrylate resin This includes a homopolymer of bisphenol A type di (meth) acrylate and a brominated bisphenol A type di (meth) acrylate. Homopolymer, copolymer of bisphenol A type di (meth) acrylate with other polymerizable monomer, copolymer of brominated bisphenol A type di (meth) acrylate with other polymerizable monomer, bisphenol A-type mono (meth) acrylate urethane-modified monomer polymer, bisphenol A-type mono (meth) acrylate urethane-modified monomer and other polymerizable monomer, brominated bisphenol A-type mono (meth) acrylate ) Polymer of acrylate urethane modified monomer, brominated bisphenol A type mono (meth) acryle A copolymer of a urethane-modified monomer of a salt with another polymerizable monomer can be exemplified.

(5) Polyester Resin The polyester resin is generally a polycondensation product of a polybasic acid and a polyhydric alcohol (including the polyalkylene terephthalate of the above (3)). Examples thereof include a glyptal resin, a copolymer of an unsaturated polyester obtained from a polyhydric alcohol and an unsaturated polybasic acid and a vinyl group-containing compound, and a diallyl phthalate resin.

(6) Others Other preferred materials include polyethylene naphthalate, unsaturated polyester, acrylonitrile-styrene copolymer, polyvinyl chloride, polyurethane, and epoxy resin. Also, in consideration of heat resistance, an aramid resin (aromatic polyamide) such as polyamide imide, polyimide, or polyamino bismaleimide can be preferably used.

The plastic substrate can be obtained by stretching these resins or diluting them in a solvent, forming a film and drying the film. The thickness of the substrate is usually about 25 to 500 microns.

On the surface of the plastic substrate as described above, Japanese Patent Publication No. Sho 50-28092 and Japanese Patent Publication No. Sho 50-2
As disclosed in JP-A No. 8446, JP-B-51-24368, JP-A-52-112698, and JP-B-57-2735, even if coated with a coating material such as a hard coat. Well, the presence of this coating material in the lower layer of an antireflection film made of an inorganic material as described later, adhesion, hardness, chemical resistance, durability,
Various physical properties such as dyeability can be improved. The thickness of the coating such as the hard coat is usually about 2 to 20 μm.

The absorption filter is formed by applying a resin solution in which a pigment or dye such as carbon black is mixed and dispersed on the surface of the base material, and is polymerized by heating, ultraviolet irradiation, electron beam irradiation or the like.
After curing or applying and curing a transparent resin solution, it can be obtained by immersing in a dye bath in which a dye is dispersed and performing a dyeing treatment.

The absorption filter thus formed is
The reflection characteristics do not change significantly depending on the direction of the incident light, and the transmittance can be freely adjusted by changing the mixing ratio of the pigment or the dye, the film thickness of the light absorption filter, and the like.

Examples of a method for applying the resin solution to the surface of the substrate include coating methods such as spin coating, roll coating, and curtain coating.

As the resin, an ultraviolet curable resin such as a mixture of an oligomer such as polyester acrylate and polyurethane acrylate and a polyfunctional acrylate monomer such as pentaerythritol triacrylate can be used.

Further, these are described in JP-B-7-36044, Toshiba Review 1992, Vol. 47, no. 5,
A selective absorption filter for selectively absorbing light of a specific wavelength as described in p. 407-410 or the like, or a carbon black and a binder as described in JP-A-3-53726. A method using a conductive paint to be applied is also preferably applicable.

Further, at the time of forming the above-mentioned plastic substrate or hard coat layer, the function of an absorption filter can be added by using the above-mentioned coloring method.

Further, the absorption filter layer may be a part of the antireflection film, and in this case, the film thickness can be appropriately determined by designing the antireflection film. Further, the absorption filter layer may be formed on a surface opposite to the antireflection film with the base material interposed therebetween.

An antireflection film having an absorption layer can be formed by various PVD (Physical Vapor Depo) methods such as a vacuum evaporation method, an ion plating method, and a sputtering method.
It can be formed by, for example, a position method.

As materials suitable for the PVD method, Au, Pt, Pd, Fe, Fe—Ni, N
Metals such as i-Cr, Al, Ag, Cu, Ti, Zr, and Hf or nitrides of these metals can be used.

The material of the dielectric layer is Si
O ₂ , Si ₃ N ₄ , Al ₂ O ₃ , ZrO ₂ , TiO ₂ ,
Ta ₂ O ₅ , TaHf ₂ , SiO, TiO, Ti
₂ O ₃ , HfO ₂ , ZnO, In ₂ O ₃ , In ₂ O ₃ /
SnO ₂ , Y ₂ O ₃ , Yb ₂ O ₃ , Sb ₂ O ₃ , Mg
Examples include inorganic oxides such as O and CeO ₂ .

The display device of the present invention has a light absorbing filter layer on a display surface, and an antireflection film on the light absorbing filter layer, the antireflection film having at least one layer being an absorbing layer. A filter is attached. As a method of attaching the filter, the filter can be attached via a transparent substrate layer, an adhesive layer, or a transparent substrate layer and an adhesive layer, or directly.

As the transparent base material used for the transparent base material layer, the same ones as those listed above can be used. When an adhesive layer is provided, the adhesive used is not particularly limited as long as it is transparent and has excellent light resistance.

Examples of the binder resin used in the adhesive layer include acrylic resin, vinyl chloride-vinyl acetate copolymer, polyester resin, urethane resin, chlorinated polyethylene, chlorinated polypropylene and the like.
The thickness of the adhesive layer is usually about 5 to 100 nm. The adhesion surface of the substrate may be subjected to an easy adhesion treatment in order to enhance the adhesion, as long as the transparency is not impaired.

As the display device of the present invention, for example, CR
T (cathode ray tube, cathode ray tube), LCD (liquid crystal display), plasma display, FED (Field E)
Various display devices for displaying internal information, such as a mission display, a projector (projection display), and an LED (using a light emitting diode), may be used.

FIG. 1 shows an example of a structural sectional view of the display device of the present invention.
Shown in (A) shows that an absorption filter layer 2 is provided on a substrate 1, and an antireflection film 5 composed of two layers of an absorption layer 3 and a dielectric layer 4 is provided thereon via an adhesive layer 6. Is formed. (B) shows that an antireflection film 5 composed of two layers of an absorption layer 3 and a dielectric layer 4 is formed on a substrate 1 via an adhesive layer 6, and further an opposite substrate The surface is provided with an absorption filter layer 2, and FIG.
A display device having the same layer configuration as (a), wherein the anti-reflection film 5 is composed of three layers of an absorption layer 3, a first dielectric layer 4, and a second dielectric layer 4 '. . It is to be noted that the adhesive layer need not be provided if unnecessary, and is not shown in the drawings. In the present invention, the antireflection film is made of a laminate of four or more layers having at least one absorption layer. It may be. Further, it may have a hard coat layer.

[0055]

EXAMPLES Next, the present invention will be described in more detail with reference to examples. However, the following is merely an embodiment, and can be freely designed and changed without departing from the gist of the present invention. it can.

Example 1 (1) Formation of Absorption Filter A transparent polyethylene terephthalate (PET) film 11 having a thickness of 100 μm was prepared as a base material. This PE
One surface of the T film is subjected to a hard coat treatment in order to secure the surface hardness in advance, so that the hard coat layer 12
Is preferably formed. As the hard coat treatment, for example, an acrylic cross-linkable resin material is applied to one side of a PET film and cross-linked and cured by ultraviolet rays or electron beams, or a silicon-based, melamine-based, or epoxy-based resin material is applied to one side of the PET film. And heat-curing. The thickness of the hard coat layer thus formed is about 2 to 20 nm.

Next, a mixture of carbon black as a pigment and an acrylic ultraviolet curable resin was applied on the hard coat layer 12 to a thickness of 5 μm by a roll coating method, and dried. Irradiation cures and polymerizes to form an absorption filter layer 13 having a transmittance of 75%.

(2) Formation of antireflection film On the absorption filter layer 13 obtained as described above, TiN is pre-sputtered by a sputtering method to form an absorption film 14 of 17.5 nm in thickness made of TiN. Form. Further, a film thickness of 78 n which is a dielectric film
By forming a SiO ₂ film 15 of m by sputtering, a two-layer anti-reflection film 16 is formed.
A film having the same layer configuration as shown in (a) is obtained.

According to a simulation by a computer, the transmission characteristics of this antireflection film are as shown in FIG.
The transmittance at a wavelength of 546 nm was 70%.

(3) Adhesion to display surface Acrylic adhesive 17 is applied to the back surface of the film obtained above.
Was applied and dried, and then adhered to the surface of the panel glass 7 of the cathode ray tube 10 as shown in FIG. 2 to obtain a display device of the present invention as shown in FIG. 3A.

Example 2 (1) Production of Absorption Filter A CRT panel glass having a thickness of 12 mm at the center of the display surface is prepared as a base material. As a glass material at this time, clear glass (standard number: H-8601 of EIAJ (Japan Electronics Industry Association)) was used. Next, a mixture of carbon black as a pigment and an acrylic ultraviolet curable resin was applied to the inner surface thereof, dried, and then irradiated with ultraviolet light to be cured and polymerized to form an absorption filter layer 18 having a transmittance of 70%. . Further, a phosphor was applied on the absorption filter layer 18 on the back surface and patterned to form a phosphor screen A.

After that, the funnel 8, the electron gun 9, and the like were combined and a tension band was added to complete the CRT 10 as shown in FIG.

(2) Formation of anti-reflection film On the surface of the absorption filter layer 18 of the completed cathode ray tube,
A 13 nm-thick absorbing layer 19 made of TiN was formed by the same sputtering method as in Example 1. Next, a first layer made of silicon nitride having a thickness of 5 nm is formed on the absorption film.
Was formed by a sputtering method. Further, a second dielectric layer 21 made of silicon oxide having a thickness of 80 nm is formed on the first dielectric layer 21 by a sputtering method, so that a layer configuration similar to that shown in FIG. An anti-reflection film 22 having three layers was formed. The transmittance of the display panel was adjusted to 50% by the antireflection film and the absorption filter layer formed earlier. FIG. 6 shows the transmission characteristics of this antireflection film by computer simulation. FIG. 3B is a cross-sectional view of the structure of the obtained display device.

COMPARATIVE EXAMPLE 1 Dark tint glass (EIAJ standard number: H-5601) was prepared as a panel glass of a CRT, and a funnel, an electron gun and the like were combined to add a tension band. A CRT similar to that shown in Fig. 1 was completed. Next, a 135 nm-thick first dielectric film 23 made of TiO ₂ was formed on the surface of the completed cathode ray tube by a sputtering method. Next, the dielectric film 2
A second dielectric film 24 made of silicon oxide having a thickness of 90 nm is formed on the third dielectric film 24 by a sputtering method, and a 195 nm-thick MgF ₂ film is further formed on the second dielectric film 24.
Is formed by a sputtering method.
A transparent antireflection film 26 made of a layer was formed. At this time, the transmittance of the panel is finally 50%, which is the same as in Examples 1 and 2.
%. FIG. 7 shows the transmission characteristics of this antireflection film by computer simulation. FIG. 4A is a cross-sectional view showing the structure of the obtained display device.

Comparative Example 2 A dark tint glass (EIAJ standard number: H-5601) was prepared as a panel glass of a cathode ray tube, and a funnel, an electron gun, and the like were combined, and a tension band was added. The same CRT was completed. Next, a film thickness of 13
An absorption layer 27 made of TiN of nm was formed by a sputtering method. Next, a first dielectric film 28 made of silicon nitride having a thickness of 5 nm is formed on the absorption layer 27 by a sputtering method, and an oxidized film having a thickness of 80 nm is formed on the first dielectric film 28. A second dielectric film 29 made of silicon was formed by a sputtering method to form an antireflection film 30 having three layers. At this time, the transmittance of the panel was finally adjusted to 50%, which is the same as in Examples 1 and 2. FIG. 8 shows the transmission characteristics of this antireflection film by computer simulation. FIG. 4B is a cross-sectional view showing the structure of the obtained display device.

Performance Evaluation Test Examples 1 and 2 and Comparative Examples 1 and 2 prepared as described above
Using a display device, the uniformity of transmittance on the display surface,
Anti-reflection function, display quality (presence of ghost, flare, etc.)
Were evaluated. Table 1 shows the results. In Table 1, the evaluations were: ○ excellent, Δ good, × inferior,
Are shown in three stages.

[0067]

[Table 1]

[0068]

As described above, according to the antireflection filter of the present invention in which the antireflection film having the absorption film is formed on the absorption filter layer and the display device having the filter, the following effects are obtained. be able to. (1) A wide range of transmittance can be adjusted without changing the display panel material. (2) Excellent display quality can be obtained without ghosts and flares. (3) A display device having a uniform transmittance over the entire display surface can be obtained regardless of the mechanical strength of the display device. (4) An excellent antireflection function can be obtained with a minimum number of layers.

[Brief description of the drawings]

FIG. 1 is a structural sectional view of a display device of the present invention.

FIG. 2 is a schematic diagram of a cathode ray tube used in Examples and Comparative Examples.

FIG. 3 is a structural cross-sectional view of the display device according to the embodiment.

FIG. 4 is a structural sectional view of a display device of a comparative example.

FIG. 5 is a diagram illustrating front-side reflection, back-side reflection, and transmission characteristics of the antireflection film of Example 1 by computer simulation. The vertical axis indicates the reflectance, and the horizontal axis indicates the wavelength.

FIG. 6 is a diagram illustrating front-side reflection, back-side reflection, and transmission characteristics of the antireflection film of Example 2 by computer simulation. The vertical axis indicates the reflectance, and the horizontal axis indicates the wavelength.

FIG. 7 is a diagram showing front-surface reflection, back-surface reflection, and transmission characteristics of the antireflection film of Comparative Example 1 by computer simulation. The vertical axis indicates the reflectance, and the horizontal axis indicates the wavelength.

FIG. 8 is a diagram illustrating front-side reflection, back-side reflection, and transmission characteristics of the antireflection film of Comparative Example 2 by computer simulation. The vertical axis indicates the reflectance, and the horizontal axis indicates the wavelength.

FIG. 9 is a diagram schematically showing a state of transmission and reflection of light from a phosphor of a display device filter according to the related art and the present invention.

[Explanation of symbols]

1, 31: transparent substrate, 2, 13, 18, 35 ... absorption filter layer, 3, 14, 19, 27 ... absorption layer, 4, 15 ...
Dielectric layer, 5, 16, 22, 26, 30, 32, 32 '
... Anti-reflection film, 6,12 ... Adhesive layer, 7 ... Panel glass, 8 ... Funnel, 9 ... Electron gun, 10 ... CRT
11 PET film, 20, 23, 28 first dielectric layer, 21, 24, 29 second dielectric layer, 25 Mg
F ₂ film, 33: phosphor, 34: virtual image

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Naotaka Yamashita 6-7-35 Kita Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Masahiro Kobayashi 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F-term (Reference) 2H048 AA05 AA07 AA11 AA18 AA24 CA01 CA04 CA05 CA09 CA14 CA19 CA24 CA29 GA07 GA09 GA11 GA24 GA35 GA46 GA61 2K009 AA05 AA06 AA12 AA15 BB02 BB14 BB15 BB23 CC04 DD03 CC03 DD03 DD06 DD07 FF02 5C058 AA01 AB05 BA08 BA35 DA01 DA03

Claims (5)

[Claims] 1. A filter for a display device having a light-absorbing filter layer on a transparent base material and an antireflection film comprising two or more layers on the light-absorbing filter layer, wherein the antireflection film comprises two or more layers. Is a filter for a display device, wherein at least one layer is an absorption layer. 2. The display device filter according to claim 1, wherein the antireflection film having two or more layers has a laminated structure of at least a light absorbing layer and a dielectric layer. 3. A display device having a display surface, comprising: a light absorption filter layer on the display surface; and an anti-reflection filter comprising at least two layers on the light absorption filter layer, at least one of which is an absorption layer. A display device comprising a display device filter having a film attached thereto. 4. The display device according to claim 3, wherein the antireflection film having two or more layers has a laminated structure of at least a light absorption layer and a dielectric layer. 5. The display device according to claim 3, wherein the display device filter is a front plate of the display device.