JP2013086466A - Front plate and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a front plate for display device decorated with high quality such that excessive metallic luster is suppressed and tinted metallic luster is represented while securing surface flatness, and to provide its manufacturing method with high production efficiency.SOLUTION: There is provided the front plate for display device which is arranged on a view side of a display panel, the front plate including a plate-like glass substrate having a flat main surface, a second transparent base layer arranged on a view-side main surface of the glass substrate, a frame-shaped colored translucent layer printed more on a display panel side than the second transparent base layer using ink containing a transparent binder resin and a coloring agent, a metallic luster layer which is arranged more on the display panel side than the colored translucent layer, and has the same shape and size with the colored translucent layer and does not have a region to be viewed not through the colored translucent layer when viewed from the view side, the colored translucent layer and metallic luster layer being arranged together with an adhesive layer individually while being laminated.

Description

  The present invention relates to a front plate used in a display device and a method for manufacturing the front plate.

  In an FPD (Flat Panel Display) device such as a liquid crystal display (LCD), a plasma display panel (PDP), and an organic EL (Electroluminescent) display (OELD) applied to a thin television, a “front filter” There is a glass front plate, also called "". This front plate is mainly installed for the purpose of preventing reflection of ambient light, improving the strength of the FPD device, and preventing impact damage of the FPD device.

  In addition to the above functions, recent front plates are also required to have design and decorative properties such as a clean and chic appearance of the FPD device and a high-quality impression. It was. For this reason, for example, a technique for manufacturing a front plate having a black decorative frame by baking a black ceramic layer in a frame shape around a part or the entire circumference of a peripheral region of a glass substrate has been developed (for example, Patent Documents). 1).

  However, in the method using such a ceramic layer, there is a limit to the types of colors that can be expressed as a decorative frame. In addition, when installing the decorative frame, a high-temperature heat treatment is required, which causes a problem that the manufacturing method becomes complicated and the cost increases.

  Therefore, a technique for forming decorative frames of various colors around a glass substrate by a simpler method has been demanded.

In this regard, Patent Document 2 describes a technique for a decorative sheet that can express a deep hue while suppressing an excessive metallic feeling, although it is not particularly intended for application in the field of FPD devices.
By attaching this decorative sheet in a frame shape to the peripheral area of the glass substrate, it is possible to impart decorativeness to the front plate. However, in this method, there are problems such that the pasted portion is present on the surface of the front plate in a convex shape, so that the aesthetic appearance is impaired and the portion is easily peeled off. Therefore, it is usually considered that a functional layer such as an antireflection layer used for the outermost layer of the front plate is formed on the frame-like decorative sheet to keep the surface flat. Even if the step is covered, an air layer remains along the step, and it is difficult to ensure flatness.

JP 2002-91326 A Registered Utility Model No. 3153410

  The present invention provides a display device for a display device that is provided with a high-quality decoration that suppresses excessive metallic luster and expresses metallic luster while maintaining surface flatness. An object of the present invention is to provide a front plate and a manufacturing method with high production efficiency.

  The front plate of the present invention is a front plate for a display device disposed on the viewing side of the display panel, and is disposed on a plate-shaped glass substrate having a flat main surface and a main surface on the viewing side of the glass substrate. The first transparent base material layer having the same shape and the same size as the main surface of the glass substrate, and an ink containing a transparent binder resin and a colorant is used to display more than the first transparent base material layer. A colored translucent layer having a frame shape having a size corresponding to the outer edge region of the main surface of the glass substrate formed by printing on the panel side, and the coloring disposed on the display panel side with respect to the colored translucent layer A metallic luster layer having the same shape and the same size as the translucent layer, and having a metal luster layer that does not have an area that is recognized without passing through the colored translucent layer when viewed from the viewing side, and the colored translucent layer And the metallic luster layer and the adhesive layer in laminated form or separately Characterized in that it is disposed.

  In the present specification, “same shape, same size” does not mean only the same shape and size in a strict geometric sense, but substantially the same shape and size when visually observed. It means what is recognized.

In the front plate of the present invention, the colored translucent layer preferably has a thickness of 1 to 15 μm, and the colored translucent layer preferably has a visible light transmittance of 15 to 80%.
In the front plate of the present invention, the metallic luster layer is at least one selected from the group consisting of gold, silver, aluminum, platinum, titanium, chromium, nickel, tin, iron, cobalt, and an alloy containing at least one of these. It is preferable that it is a layer formed by metal vapor deposition or printing using mirror ink.

The front plate of the present invention further includes an antireflection layer having a main surface having the same shape and the same size as the main surface of the first transparent base material layer on the main surface on the viewing side of the first transparent base material layer. A configuration having a hard coat layer is preferred.
In the front plate of the present invention, it is preferable that the colored translucent layer is a layer formed with the main surface on the display panel side of the first transparent base material layer as a printing surface.
The front plate of the present invention further includes a second transparent base material layer having a main surface of the same shape and the same size as the main surface of the glass substrate on the display panel side from the first transparent base material layer. A configuration in which one main surface of the transparent base material layer 2 is a printing surface of the colored translucent layer is preferable.
In the front plate of the present invention, the colored translucent layer is formed on the main surface on the viewing side of the second transparent base material layer, and the main surface on the display panel side of the second transparent base material layer. The structure in which the said metallic luster layer was formed may be sufficient.

This invention is a manufacturing method of the front board for display apparatuses of the said invention, Comprising: A printing surface is selected so that the said colored translucent layer may be located in the display panel side rather than a said 1st transparent base material layer And printing the ink containing the transparent binder resin and the colorant on the printed surface in a frame shape having a size corresponding to the outer edge region of the main surface of the glass substrate to form the colored translucent layer. A manufacturing method is provided.
In the production method of the present invention, the metallic luster layer is positioned closer to the display panel than the colored translucent layer, and has the same shape and the same size as the colored translucent layer. You may further include the process formed by printing using metal vapor deposition or mirror ink so that it may not have the area | region recognized without passing through a transparent layer.

  According to the present invention, in a front plate for a display device, a display device with high-quality decoration in which excessive metallic luster is suppressed and colored metallic luster is expressed while ensuring surface flatness. And a manufacturing method with high production efficiency can be provided.

It is sectional drawing which shows an example of the display apparatus to which the front board of this invention was applied. It is the top view which looked at an example of the embodiment of the front board of the present invention from the visual recognition side. It is sectional drawing which shows an example of embodiment of the front plate of this invention. It is sectional drawing which shows the modification of embodiment of the front plate of this invention. It is sectional drawing which shows the modification of embodiment of the front plate of this invention. It is sectional drawing which shows the modification of embodiment of the front plate of this invention. It is sectional drawing which shows the modification of embodiment of the front plate of this invention.

DESCRIPTION OF EMBODIMENTS Embodiments according to a front plate for a display device and a method for manufacturing the same according to the present invention will be described below with reference to the drawings. In addition, this invention is not limited to the following embodiment.
FIG. 1 is a cross-sectional view showing an example of a display device to which the front plate of the present invention is applied.
The front plate 10 of the present invention is disposed on the front surface of the display panel 21 in the display device 20, that is, on the viewing side. Here, the viewing side refers to the side on which a person viewing the display device is present. 2 is a plan view of an example of the embodiment of the front plate 10A of the present invention as viewed from the viewing side, and FIG. 3 is a cross-sectional view of the front plate 10A shown in FIG.
In addition, FPD apparatuses, such as LCD, PDP, OELD, are mentioned as a display apparatus to which the front board of this invention is applied.

  The front plate 10A has a plate-like glass substrate 11 having a flat main surface on the side closest to the display panel, and has a main surface having the same shape and the same size as the main surface of the glass substrate 11 as the outermost surface layer on the viewing side. The first transparent substrate layer 12 is provided. On the main surface of the first transparent base layer 12 on the display panel side, a frame-shaped colored semi-transparent layer 13 is printed on the outer edge region, and the same shape and the same size are formed on the colored semi-transparent layer 13. A metallic gloss layer 14 is formed. In the first transparent base material layer 12 in which the frame-shaped colored translucent layer 13 and the metallic luster layer 14 are sequentially laminated on the outer edge region, the main surface on the laminated side is the main surface on the viewing side of the glass substrate 11. The front plate 10 </ b> A is configured by being bonded through the adhesive layer 15 so as to face each other.

  In front plate 10A, a frame shape corresponding to these outer edge regions is formed between flat first transparent base material layer 12 disposed on the viewing side and glass substrate 11 disposed on the display panel side. The colored translucent layer 13 and the metallic luster layer 14 are laminated, and these frame-shaped members are provided between the flat plate-like members via the adhesive layer 15. With this configuration, the pressure-sensitive adhesive layer 15 absorbs the step generated by providing the frame-shaped member, and the surface of the first transparent base material layer 12 disposed on the viewing side, that is, the viewing side of the front plate 10A. It is possible to obtain a front plate that does not affect the flatness of the surface and has a good appearance with the surface flatness maintained.

The front plate 10 </ b> A has a frame-shaped decorative frame 2 in the outer edge region when viewed from the viewing side, and the region surrounded by the decorative frame 2 is the image portion 1. In the front plate 10A, the metallic luster layer 14 is arranged so that there is no area recognized without the colored translucent layer 13 when viewed from the viewing side. In the front plate 10A of the present embodiment, the decorative frame 2 has a configuration in which the colored translucent layer 13 and the metallic gloss layer 14 are laminated in this order from the viewing side, so that the metallic gloss layer 14 is directly recognized from the viewing side. In addition, an excessively high metallic luster is suppressed, and a decorative frame 2 having a high-quality color in which a metallic luster with a color is expressed is realized.
Hereinafter, each component which 10A of front plates have is demonstrated.

  The glass substrate 11 has a function as a support for the front plate 10A. The support for the front plate 10A is required to have high rigidity in addition to transparency in order to protect the display device from impact. In the present invention, the required characteristics of transparency and high rigidity are ensured by constituting the support with glass. Examples of the glass that is a constituent material of the glass substrate 11 include soda lime glass and chemically tempered glass.

  The shape of the glass substrate 11 is a plate shape in which both main surfaces are flat, and the thickness is preferably 0.3 mm to 20 mm, more preferably 1 to 10 mm, and particularly preferably 1.5 to 5 mm. A display apparatus can fully be protected from an impact by being 0.3 mm or more. By being 20 mm or less, the weight of the front plate 10A can be reduced. In addition, the shape and size of the main surface of the glass substrate 11 usually have the same shape, the same size, or larger than the shape, size, and the size of the main surface of the display panel. Usually, the outer peripheral part of the glass substrate 11 is chamfered.

  Further, the optical characteristics of the glass substrate 11 are defined by a visible light transmittance Tv of 90% or more, a visible light reflectance Rv of 10% or less, a haze (cloudiness) of 1% or less, and JIS Z8701 (1999). The color coordinates (x, y) in the XYZ color system are preferably (x, y) = (0.310 ± 0.100, 0.317 ± 0.100). In the front plate used for the display device, it is preferable that the glass substrate 11 is within the above optical characteristic range so as not to affect the image when a person visually recognizes it, but does not affect the image of the display device. Colored glass may be used.

  The first transparent base layer 12 is configured as the outermost layer on the viewing side of the front plate 10 </ b> A, and the main surface on the display panel side is the printing surface of the colored translucent layer 13. As a constituent material of the first transparent base layer 12, for example, polyethylene terephthalate (PET), polyethylene naphthalate resin, polyester resin such as polybutylene terephthalate, cellulose resin such as triacetyl cellulose, acrylic resin, polyethylene Examples thereof include films of various synthetic resins such as resins, polyolefin resins such as polypropylene resins, polyvinyl chloride resins, polystyrene resins, polyurethane resins, polycarbonate resins, polyamide resins, polyimide resins, and fluorine resins.

  Among these, polyethylene terephthalate and triacetyl cellulose are preferable from the viewpoints of transparency and processability. Since the first transparent base material layer 12 is provided over substantially the entire surface of the front plate 10A, it has optical characteristics that do not affect the image when a person visually recognizes the same as the glass substrate 11 described above. Is selected. Specifically, the first transparent substrate layer 12 preferably has a visible light transmittance Tv of 90% or more, a visible light reflectance Rv of 10% or less, and a haze (cloudiness) of 3% or less. Although it does not restrict | limit especially as thickness of the 1st transparent base material layer 12, 15-250 micrometers is preferable from the said viewpoint.

  The main surface of the first transparent base material layer 12 on the display panel side is a printing surface on which a frame-shaped colored translucent layer 13 is printed in the outer edge region. Here, as the printing surface of the colored translucent layer 13, the wetting tension measured based on the wettability evaluation of JIS K6768 (1999) is preferably 40 mN / m or more, and 45 mN / m or more. More preferred. This depends on the components of the ink used for printing the colored translucent layer 13 and the printing method, but if the wetting tension is less than the above value, the ink wettability cannot be said to be sufficient, and the desired printed shape is obtained. It may not be obtained.

In the 1st transparent base material layer 12, it is preferable that the main surface at the side of a display panel has the said wetting characteristic. For example, when using a commercially available PET film or the like, since there are those whose surface wetting tension is adjusted by an easy adhesion treatment or the like, at least one main surface has a wetting tension in the above preferred range. What is necessary is just to arrange | position so that this PET film may be selected and this main surface may become a main surface by the side of a display panel. Specifically, the names are Cosmo Shine A4100 (manufactured by Toyobo Co., Ltd., single-sided easy adhesion treatment), Cosmo Shine A4300 (manufactured by Toyobo Co., Ltd., double-sided easy adhesion treatment), Toyobo Ester Film E5101 (manufactured by Toyobo Co., Ltd., single-sided corona) Treatment) and the like.
In addition, when using the films of various synthetic resins exemplified above, if the wetting tension is not in the preferred range on any of the principal surfaces, at least one principal surface is set to have the wetting tension in the preferred range. It is preferable to use a surface treatment by a conventionally known method so that its main surface becomes the main surface on the display panel side.

  Furthermore, as long as the first transparent base layer 12 has the above optical characteristics and surface characteristics, a resin in which functional materials such as a slipperiness improving material and an antistatic material are blended with the above various synthetic resins. It may be a layer.

  The colored translucent layer 13 is a layer printed in a frame shape on the outer edge region of the main surface of the first transparent base layer 12 on the display panel side. The colored translucent layer 13 is not particularly limited as long as the metal gloss layer 14 described below is laminated on the display panel side to express an appropriate metal gloss with a predetermined color when viewed from the viewing side. Not. Here, in this specification, the layer or substrate constituting the front plate is “semi-transparent” means that the layer or substrate has a visible light transmittance Tv in the range of 10% <Tv <90%. “Transparent” means a material having a visible light transmittance of 90% or more.

  Specifically, the colored translucent layer 13 is a layer formed by printing described below using an ink containing a transparent binder resin and a colorant, and has a configuration in which the colorant is dispersed in the transparent binder resin. . The visible light transmittance of the colored translucent layer 13 is preferably 15 to 80%, more preferably 20 to 75%. Although depending on the metallic luster layer 14 to be combined, if the visible light transmittance of the colored translucent layer 13 is in the above range, excessive metallic luster is suppressed, and high-quality tint that expresses metallic luster with color is obtained. it can. Moreover, about the film thickness of the colored translucent layer 13, 1-15 micrometers is preferable from a viewpoint of making it the high-quality hue in which the metallic luster with the color was expressed, and the viewpoint of productivity or economical efficiency.

  The size of the colored translucent layer 13 can be the size normally used for the decorative frame 2 in the front plate 10A. The outer edge of the frame shape of the colored translucent layer 13 preferably coincides with the outer periphery of the main surface of the first transparent base material layer 12.

  Specifically, the printing of the colored translucent layer 13 includes a step of preparing an ink containing a transparent binder resin and a colorant, and a step of applying the obtained ink to a printed surface in a predetermined shape to form an ink coating film. The obtained ink coating film can be dried and subjected to a method including a step of applying a curing treatment with heat or light as necessary to obtain a colored translucent layer 13.

  The ink used for printing the colored translucent layer 13 includes a transparent binder resin and a colorant as essential components. As the colorant, for example, dyes and / or pigments of each color are used. Such dyes and pigments can be widely used commercially. The color expressed by the colorant is not particularly limited, and is, for example, gray, purple, brown, red, green, yellow, orange or blue. By using one or more colorants selected from gray color, brown color, red color, green color, purple color, yellow color, orange color, black color and blue color, any desired color can be obtained.

  Examples of the transparent binder resin include, but are not limited to, acrylic resins, silicone resins, butadiene resins, polyurethane resins, polyester resins, epoxy resins, chlorinated polyolefin resins, vinyl chloride / acetic acid. Conventionally known transparent binder resins such as vinyl copolymer resins can be mentioned. From the viewpoint of transparency and stability of the colorant, acrylic resins, epoxy resins, polyurethane resins, vinyl chloride / vinyl acetate copolymer resins, and the like are preferably used.

  Here, in the case where the transparent binder resin contained in the ink is a thermoplastic resin, the colored translucent layer 13 is formed by dispersing the colorant. When the transparent binder resin contained in the ink is a curable resin, the ink is contained in the state of the resin raw material before curing, and in the colored translucent layer 13 formed by printing, a cured resin in which the colorant is dispersed. Exists as. The resin raw material for the cured resin includes both a resin raw material composed of a resin alone and a resin raw material composed of a main resin and a crosslinking agent. In this specification, the term binder resin is used to include both a resin raw material that reacts to become a cured resin and a cured resin obtained by curing.

  For example, the colorant and the transparent binder resin in the colored translucent layer 13 are blended in such a ratio that the colored translucent layer 13 has the above visible light transmittance. In blending the colorant, the color tone represented by the visible light transmittance, chromaticity coordinates, and the like of the target colored translucent layer 13 is arbitrarily blended in consideration of the absorbance of the colorant and the solubility in the solvent. It is possible.

  In addition to the colorant and the transparent binder resin, the colored translucent layer 13 includes additives, antifoaming agents, leveling agents, pigment dispersants and the like for imparting mechanical performance such as friction resistance and blocking resistance as optional components. Contains additives that improve printing suitability, additives such as UV absorbers, quenchers, etc., in amounts that do not impair the effects of the present invention and that allow the functions of each additive to be expressed. May be. By blending an ultraviolet absorber with the colored translucent layer 13, deterioration of the colorant and the transparent binder resin due to ultraviolet rays is suppressed, which is preferable.

  The ink used for printing the colored translucent layer 13 is prepared by dissolving or dispersing a transparent binder resin and a colorant, which are essential components, and various optional components added as necessary, in a solvent. The solvent is appropriately selected according to the transparent binder resin and the colorant used. As general examples, esters, ethers, ketones, alcohols, polyhydric alcohol derivatives, aromatic hydrocarbons and the like can be selected. The amount of solvent in the ink is appropriately adjusted depending on the transparent binder resin, colorant, and printing method used.

  In the printing of the colored translucent layer 13, an ink coating film is formed in a frame shape on the outer edge region of the main surface of the first transparent base material layer 12 on the display panel side using the ink obtained above. The method for forming the ink coating film is not particularly limited, and a normal ink coating method can be appropriately selected and used. Specific examples include a roll coating method, a spray coating method, a doctor coating method, a bar coating method, a reverse coating method, a die coating method, screen printing, gravure printing, and flexographic printing. By these coating methods, an ink coating film having the above composition is formed in a frame shape at a predetermined position of the first transparent base material layer 12.

  About the ink coating film formed above, the solvent is then removed by drying. Conditions such as drying temperature and time are appropriately adjusted depending on the type and amount of the solvent used. Furthermore, according to the kind of transparent binder resin to be used, the predetermined | prescribed hardening process with a heat | fever or light is given, and the colored translucent layer 13 is formed. For example, when a thermosetting resin such as a polyurethane resin is used as the transparent binder resin, the drying for removing the solvent may be performed simultaneously with the heat treatment for curing the resin.

  As the metallic luster layer 14 formed in the same shape and the same size as the colored translucent layer 13 on the colored translucent layer 13 printed in this manner, sufficient metallic luster is obtained when the layer itself is visually recognized. It is preferable that the layer feels sex. In order to satisfy this requirement, the metallic luster layer 14 is mainly composed of a single metal, a metal compound, and an alloy. Hereinafter, single metals, metal compounds, and alloys are collectively referred to as metals.

  Examples of the single metal include gold, silver, aluminum, platinum, titanium, chromium, nickel, tin, iron, and cobalt. Examples of the metal compound include zinc sulfide and bismuth oxide. Examples of the alloy include nickel-chromium alloy, stainless steel, inconel, and silver-gold-copper alloy. A single metal and an alloy are preferable because it is easy to ensure metallic gloss.

  The metallic luster layer 14 is preferably a metallic vapor-deposited layer having metallic luster or a printed layer obtained by printing with mirror ink. In the case of a metal vapor deposition layer, the metal content is 100% by mass, and in the mirror ink printing layer, the metal content is generally 30 to 97% by mass.

  Although the thickness of the metallic luster layer 14 is not restricted to this, For example, the range of 1-15 micrometers is preferable. If the thickness of the metallic luster layer 14 is in the above range, it is possible to maintain both sufficient metallic luster and film strength. The metallic gloss layer 14 is formed on the colored translucent layer 13 in the same shape and size. At this time, the metallic luster layer 14 has no region that is recognized without the colored translucent layer 13 when viewed from the viewing side, that is, there is no region that is formed beyond the region where the colored translucent layer 13 is formed. Needed.

  Therefore, the metallic luster layer 14 may be formed in a frame shape smaller in size than the colored translucent layer 13 to the extent that it is not visually recognized as necessary. The reduction ratio of the metallic gloss layer 14 from the colored translucent layer 13 depends on the size of the colored translucent layer 13, in other words, the size of the front plate 10A. For example, when the size of the front plate 10A is designed to match the display panel having a size of 32 to 65 inches, the size of the metallic luster layer 14 is changed from the size of the frame shape of the colored translucent layer 13 to the outer periphery. May be as small as 0.3 to 5 mm and the inner circumference may be as large as 0.3 to 5 mm.

  As a method for forming the metallic gloss layer 14 by metal vapor deposition, specifically, conventional methods such as vacuum vapor deposition, sputtering, ion plating, reactive vacuum vapor deposition, reactive sputtering, and reactive ion plating are used. A known metal vapor deposition method may be mentioned.

  In the front plate 10A, the metallic luster layer 14 is formed in the same shape and size on the colored translucent layer 13 formed in a frame shape on the main surface of the first transparent base layer 12 on the display panel side. . Here, any of the above metal vapor deposition methods is a method in which the entire vapor deposition surface is treated, and when this is applied as it is, a metal is deposited on the entire main surface of the first transparent base material layer 12 on the display panel side. A vapor deposition layer is formed. Therefore, there is a need for a method of forming a metal vapor deposition layer only on a portion of the first transparent base layer 12 on the main surface on the display panel side that requires metal vapor deposition, that is, on the colored translucent layer 13.

  As such a method, specifically, a mask that forms a metal vapor deposition layer only on a portion that requires metal vapor deposition by masking a portion that does not require metal vapor deposition, performs metal vapor deposition, and removes the mask. Deposition methods such as the opal processing method (a kind of etching method), the celite processing method (cleaning method), the lift-off method, the photoresist method, etc., after forming a metal vapor deposition layer on the entire surface in advance and removing the unnecessary metal vapor deposition layer Is mentioned. Among these, the opal processing method and the sealite processing method are preferable.

In the opal processing method, a metal vapor-deposited layer is formed on the entire surface of the first transparent substrate layer 12 on which the colored translucent layer 13 is formed on the display panel side, and finally a necessary portion, that is, the colored translucent layer 13 is formed. In this method, a printed coating film is formed on a corresponding portion with a corrosion-resistant printing ink, and then immersed in a metal corrosive solution to etch away the exposed metal deposited layer.
In the celite processing method, a water-soluble paint or a solvent-soluble material is applied to a portion of the first transparent base material layer 12 where the metal vapor deposition layer on the display panel side is not required, that is, a portion where the colored translucent layer 13 is not formed. After forming a printed coating film with a paint, a metal vapor deposition layer is formed on the entire surface of the first transparent substrate layer 12 on the display panel side, and then immersed in water or a solvent to form a water-soluble paint or solvent-soluble. This is a method for dissolving and removing the metal vapor deposition layer formed on the printed coating film of the paint.

  When forming a metal vapor deposition layer directly on the colored semi-transparent layer 13, the colored semi-transparent layer 13 is used as a transparent resin layer for the purpose of preventing the colored semi-transparent layer 13 from being damaged by the vapor deposition and causing discoloration or clouding. Can also be covered. As described above, the transparent resin constituting the transparent resin layer is not limited thereto, but the same resin as that used as the transparent binder resin in the colored translucent layer 13 can be used. Specifically, conventionally known transparent resins such as acrylic resins, silicone resins, butadiene resins, polyurethane resins, polyester resins, epoxy resins, chlorinated polyolefin resins, vinyl chloride / vinyl acetate copolymer resins, etc. Can be mentioned. The transparent resin layer may have a frame shape like the colored translucent layer 13, or may be formed on the entire surface because it is transparent.

  When the metallic gloss layer 14 is formed by printing with a mirror ink, the method is similar to the printing of the colored translucent layer 13 in the step of preparing the mirror ink, and the obtained ink is applied to the surface to be printed in a predetermined manner. It can be performed by a method including a step of forming an ink coating film by applying to the shape, and a step of drying and curing the resulting ink coating film with heat or light as necessary to form a metallic gloss layer 14 .

When the metallic gloss layer 14 is obtained by printing with mirror ink, the mirror ink used for normal mirror printing can be used without any particular limitation.
As the mirror ink, for example, an ink containing an aluminum foil piece having a thickness of 0.5 μm or less, preferably 0.25 μm or less, more preferably 0.05 μm or less as a foil main component, and further containing a binder resin and a solvent. Is mentioned. In order to express a sufficient metallic luster, the thickness of the aluminum foil used is preferably within the above range. Furthermore, in order to express a sufficient metallic luster, aluminum foil used is preferably mainly composed of aluminum foil strips of foil area 1.5μm ² ~2000μm ^2.

  As the binder resin and the solvent contained in the mirror ink, the same binder resin as the ink used for forming the colored translucent layer 13 can be used. The content ratio of each component in the mirror ink is preferably 3 to 200 parts by mass of the binder resin with respect to 100 parts by mass of the aluminum foil piece, and preferably 500 to 4000 parts by mass of the solvent with respect to 100 parts by mass of the aluminum foil piece.

  A commercial product can be used as the mirror ink. Examples of commercially available products include MIR41000, MIR51000, MIR8000, MIR9100, and the like, all manufactured by Teikoku Ink Manufacturing Co., Ltd. under the trade names. These may be used together with a diluent or the like.

  Using the mirror ink obtained above, a mirror ink coating of the same shape and the same size is formed on the colored translucent layer 13. As the coating method of the mirror ink in printing, screen printing, gravure printing, and flexographic printing are preferable. By these coating methods, a mirror ink coating film having the above composition is formed on the colored translucent layer 13.

  About the mirror ink coating film formed above, removal of a solvent is performed by drying after that. Conditions such as drying temperature and time are appropriately adjusted depending on the type and amount of the solvent used. Furthermore, a predetermined curing treatment with heat or light is performed according to the type of transparent binder resin to be used, and the metallic gloss layer 14 is formed. For example, when a thermosetting resin such as a polyurethane resin is used as the transparent binder resin, the drying for removing the solvent may be performed simultaneously with the heat treatment for curing the resin.

  In the front plate 10A, the same shape and the same size glass substrate 11 and the first transparent base material layer 12 are laminated in this order on the outer edge region of the display panel side main surface of the first transparent base material layer 12. The colored translucent layer 13 and the metallic luster layer 14 are bonded via an adhesive layer 15 so as to be sandwiched between them.

  Examples of the material constituting the adhesive layer 15 include an acrylic adhesive, a silicone adhesive, a butadiene adhesive, a polyurethane adhesive, and the like. Among these, an acrylic pressure-sensitive adhesive is preferable.

  The acrylic pressure-sensitive adhesive is a polymer containing an acrylic monomer unit as a main component. Examples of the acrylic monomer include (meth) acrylic acid, itaconic acid, (anhydrous) maleic acid, (anhydrous) fumaric acid, crotonic acid, and alkyl esters thereof. Here, “(meth) acrylic acid” is used as a general term for acrylic acid and methacrylic acid. The same applies to (meth) acrylate.

  In the acrylic pressure-sensitive adhesive, in order to increase the cohesive strength of the pressure-sensitive adhesive, it is preferable to use a monomer having a functional group that can be a crosslinking point, such as a hydroxyl group or a glycidyl group. Preferred examples of the monomer having a functional group that can serve as a crosslinking point include hydroxyethyl (meth) acrylate and glycidyl (meth) acrylate.

  When using a monomer having a functional group that can serve as a crosslinking point, it is preferable to add a crosslinking agent. A polymer having a crosslinking point is obtained by reacting a crosslinking agent with a functional group, and a cohesive force can be secured when used as a pressure-sensitive adhesive. Examples of cross-linking agents include melamine resins, urea resins, epoxy resins, metal oxides, metal salts, metal hydroxides, metal chelates, polyisocyanates, carboxy group-containing polymers, acid anhydrides, polyamines, and so on. It is suitably selected according to the type of functional group that can be obtained.

The thickness of the adhesive layer 15 is preferably in the range of 10 μm to 200 μm, more preferably in the range of 15 μm to 50 μm, as the thickness between the metallic luster layer 14 and the glass substrate 11.
Here, the pressure-sensitive adhesive layer 15 is usually formed on a release layer having peelability and is bonded to the main surface on which the colored translucent layer 13 and the metallic gloss layer 14 of the first transparent base material layer 12 are laminated. . This is cut into a predetermined size of the first transparent base material layer 12 to be bonded to the glass substrate 11, and the release layer is peeled off and bonded to the glass substrate 11. After the pressure-sensitive adhesive layer 15 is formed on a release layer having peelability, another release layer may be further bonded thereon. In this case, one release film is peeled off and bonded to the main surface on which the colored translucent layer 13 and the metallic luster layer 14 of the first transparent base material layer 12 are laminated, and the remaining release film is peeled off to the glass substrate 11. The main surface side in which the colored translucent layer 13 and the metallic gloss layer 14 of the transparent base material layer 12 are laminated by peeling off the remaining release film and peeling off the other release film and peeling off the release film on one side. There is a method of pasting together. From these methods, a method appropriately selected is used.

  Specifically, the pressure-sensitive adhesive composition prepared in advance is applied to a release layer by a general coating film forming method such as a bar coating method, a reverse coating method, a gravure coating method, a die coating method, or a roll coating method. Apply with a uniform thickness on top. Alternatively, it is applied on the first transparent base material layer 12 in which the frame-shaped colored translucent layer 13 and the metallic luster layer 14 are laminated in the outer edge region so as to eliminate the step of the laminated portion. In this manner, a pressure-sensitive adhesive composition coating film having a flat surface can be formed relatively easily.

  The pressure-sensitive adhesive composition includes, for example, a pressure-sensitive adhesive or a pressure-sensitive adhesive raw material (hereinafter referred to as “pressure-sensitive adhesive” includes a pressure-sensitive adhesive raw material) and a solvent, and an optional component appropriately blended as necessary. Become. Thereafter, the pressure-sensitive adhesive composition coating film becomes a pressure-sensitive adhesive layer 15 through drying and, if necessary, heat and light curing treatment.

  When the pressure-sensitive adhesive layer 15 is formed on the release layer, the pressure-sensitive adhesive layer 15 is bonded onto the first transparent base material layer 12 in which the frame-shaped colored translucent layer 13 and the metallic luster layer 14 are laminated on the outer edge region. Remove the release layer. The adhesive layer 15 side of the laminate of the first transparent base layer 12 / colored translucent layer 13 / glossy metallic layer 14 / adhesive layer 15 thus produced is bonded to one main surface of the glass substrate 11. Thus, the front plate 10A is obtained. Hereinafter, the laminated body laminated | stacked in order of the 1st transparent base material layer 12 / colored semi-transparent layer 13 / metallic luster layer 14 / adhesion layer 15 is called the laminated body A for decoration. The decorative laminate A may be affixed to the glass substrate 11 immediately after production. However, the decorative laminate A may be affixed to the glass substrate 11 after being stored for a while in the state of the laminate. In that case, for the purpose of preventing the deterioration of the adhesive layer 15 during the storage period and the entry of foreign matter, etc., the decorative laminate A is prepared with the release layer using the adhesive layer 15 formed on the release layer, and is left as it is. Store it. Further, when the decorative laminate A does not have a release layer, a release layer may be newly provided on the outer surface of the adhesive layer 15.

  The peeling layer is actually peeled off when the decorative laminate A is attached to the object to be installed, in this case, the glass substrate 11, and the adhesive layer 15 exposed thereby adheres closely to the object to be installed. Is done. As described above, the release layer is a layer that is peeled off to expose the adhesive layer 15 when the decorative laminate A is used. As the release layer, for example, a resin substrate such as a PET film coated with a release agent such as a thermosetting silicone resin or an ultraviolet curable silicone resin can be used. The coating amount of the release agent is preferably 0.03 to 3.0 g / m2. In addition, in such a decorative laminate A with a release layer, the unit used for one sheet of the front plate 10A is formed in a continuous long laminated film shape with a constant interval or adjacent to each other. It may be used, and it may be cut and used for each unit at the time of use.

  In this way, the front plate 10A is obtained by bonding the decorative laminate A and the glass substrate 11, but the first transparent base layer 12, the metallic gloss layer 14, and the glass substrate 11 that are in contact with the adhesive layer 15. In some cases, bubbles may remain between the adhesive layer 15 and the adhesive layer 15. If air bubbles remain, the air bubbles appear to shine, so the decorativeness is impaired, and the surface smoothness on the viewing side of the first transparent base material layer 12 is impaired, which is not preferable. As a method for effectively eliminating the bubbles, there is a method in which the front plate 10A is heat-treated in an atmosphere exceeding normal temperature and exceeding normal pressure.

  As the conditions for the heat treatment, it is particularly preferable that the heat treatment is held for about 30 to 70 minutes in an atmosphere of 60 to 90 ° C. and 0.5 to 1.5 MPa. By setting the temperature to 60 to 90 ° C., bubbles between the adhesive layer 15 and the layer in contact with the layer 15 or the glass substrate 11 can be effectively eliminated, and are included in the colored translucent layer 13. Deterioration of the metal contained in the colorant and the metallic luster layer 14 can also be suppressed. Further, by setting the pressure to 0.5 to 1.5 MPa and the holding time to 30 to 70 minutes, bubbles between the adhesive layer 15 and the layer in contact with the layer 15 or the glass substrate 11 are effectively eliminated. In addition, productivity and the like can be sufficient. The heat treatment is more preferably held for about 40 to 60 minutes in an atmosphere of 70 to 85 ° C. and 0.8 to 1.2 MPa.

  The front plate 10A is attached to the display panel of the display device such that the first transparent base material layer 12 side is the viewing side and the glass substrate 11 side is the display panel side. The front plate 10A has the above-described configuration, so that when viewed from the viewing side as shown in FIG. 2, a high-quality design in which excessive metallic luster is suppressed and a metallic metallic luster is expressed in the outer edge region. It has a highly decorative frame 2. Further, the first transparent base material layer 12 present on the side closest to the viewing side in the front plate 10A is not affected by the thickness of the colored translucent layer 13 and the metallic luster layer 14 due to the presence of the adhesive layer 15, and the surface Since the flatness is secured, the decorativeness is not impaired.

  Although not shown, the front plate 10A may have various functional layers having the same shape and the same dimensions as the glass substrate 11 as necessary, as long as the effects of the present invention are not impaired. The functional layer is, for example, functions such as preventing damage to the front plate, preventing reflection of ambient light, shielding electromagnetic waves, shielding near infrared rays, correcting color tone, improving contrast, anti-neutral ring, and / or improving scratch resistance and preventing fingerprint adhesion. Installed to get.

  The functional layer can be appropriately disposed at positions such as the viewing side of the first transparent base material layer 12 of the front plate 10A, the viewing side of the glass substrate 11, and the display panel side according to the function of the functional layer. When a plurality of functional layers are used, they may be disposed at different positions or stacked. The functional layer may be disposed on the front plate 10A via an adhesive layer having the same configuration as the adhesive layer 15, and is formed by applying a thin film forming method such as a vapor deposition method, a sputtering method, or a CVD method. Also good. The constituent material of the functional layer is not particularly limited as long as a desired function can be exhibited, and the thickness and the like are appropriately selected according to the application.

  In particular, on the outermost surface on the viewing side of the front plate 10A, that is, on the viewing side of the first transparent base material layer 12, an antireflection function, a surface protection function, an antistatic function, a low friction function, an antifouling function, and a fingerprint prevention function In addition, it is preferable to provide a functional layer having a single function or a plurality of functions among color tone correction functions, and the functional layer is preferably an antireflection layer or a hard coat layer.

  As an antireflection layer, a laminated film in which an inorganic compound having a low refractive index and an inorganic compound having a high refractive index are alternately laminated, an antireflection film made of an inorganic compound having a low refractive index, or an antireflection film made of a resin having a low refractive index Examples include membranes. Examples of the resin having a low refractive index include a fluororesin, a silicone resin, and a fluorosilicone resin. Examples of the inorganic compound having a low refractive index include silicon dioxide. Specifically, the low refractive index is preferably 1.1 to 1.6, more preferably 1.2 to 1.5, and further preferably 1.3 to 1.48.

  As the antireflection layer, a commercially available product such as a PET film with an antireflection layer in which an antireflection layer made of a low refractive index material containing a fluoropolymer is formed on one surface of a PET substrate may be used. When using such a commercially available product, a PET substrate of a PET film with an antireflection layer may be used as the first transparent substrate layer 12. Or it is good also as a structure which laminated | stacked PET film itself with an antireflection layer on the visual recognition main surface of the 1st transparent base material layer 12 using the adhesion layer similar to the adhesion layer 15. FIG. As such a commercially available PET film with an antireflection layer, specifically, trade name: ARCTOP (URP2199) manufactured by Asahi Glass Co., Ltd. or trade name: Realak (RL1700, RL7800, RL9800, RL9900, manufactured by NOF Corporation) RL7300).

  Examples of the hard coat layer include acrylic, polyester, urethane, rubber, silicone, and vinyl compositions. The composition may be a mixture of two or more of the above composition groups or an energy ray curable composition. Moreover, the particle | grains of an organic compound and an inorganic compound may be included. The pencil hardness of the hard coat layer is preferably H or higher, and more preferably 2H or higher.

  In addition, it can also be set as the adhesive layer which has an additional function by adding desired amount of various functional materials to the adhesive layer provided in order to adhere the adhesive layer 15 or the said functional layer to another layer, without impairing an adhesive characteristic. Is possible. For example, the pressure-sensitive adhesive layer having these functions can be obtained by adding a dye (functional dye) having functions of shielding near-infrared rays and correcting color tone to the pressure-sensitive adhesive layer. At the same time, an ultraviolet absorber may be added to the adhesive layer in order to improve the light resistance of the dye.

  In this case, it is necessary to pay attention to the stacking order so as not to affect the color tone of the colored translucent layer 13. This is because, when a layer colored with a functional pigment is disposed on the viewing side of the metallic gloss layer 14 in addition to the colored translucent layer 13, the color tone changes. On the contrary, it is possible to maintain the desired color by making the content of the coloring agent of the colored translucent layer 13 the content obtained by subtracting the functional pigment by using this. .

  As described above, the book in which the colored translucent layer 13 and the metallic gloss layer 14 are laminated in that order on the main surface of the first transparent base layer 12 on the display panel side using the front plate 10A shown in FIGS. Although an example of the front plate of the invention has been shown, in the front plate of the present invention, if the first transparent base material layer 12, the colored translucent layer 13, and the metallic luster layer 14 are arranged in this order from the viewing side. These need not all be provided adjacent to each other, but may be arranged apart from each other. As described above, the colored translucent layer 13 and the metallic luster layer 14 are not formed individually, but are formed on the main surface of the layer serving as the substrate. Further, another base layer or a glass substrate is always disposed on the side of the colored translucent layer 13 and the metallic luster layer 14 that is not in contact with the base layer. With this configuration, the steps generated by these frame-shaped members, that is, the colored translucent layer 13 and the metallic luster layer 14, are always absorbed by the adhesive layer, and the substrate layer disposed outside the member has a flat surface. Can keep. As a result, the flatness of the surface on the viewing side of the front plate is maintained. In the present specification, “the surface smoothness is maintained” does not mean that the surface is completely smooth, but may have irregularities that can be recognized when a straight fluorescent lamp is reflected. It means to include.

  With reference to FIGS. 4-7, another structure of the front plate by such this invention is demonstrated. 4 and 5, the first transparent base layer 12 and the colored translucent layer 13 are provided adjacent to each other with the adhesive layer 15a, but the metallic luster layer 14 is provided apart from these together with the adhesive layer 15b. FIGS. 6 and 7 are examples in which the first transparent base layer 12 and the colored translucent layer 13 are provided apart from each other. In the following description, for each layer common to the front plate 10A, the constituent material, formation method, shape, size, and the like are all the same as those described for the front plate 10A.

  As shown in FIG. 4, the front plate 10B includes, from the viewing side, the first transparent base layer 12, the colored translucent layer 13, the adhesive layer 15a, the glass substrate 11, the adhesive layer 15b, the metallic gloss layer 14, and the first Two transparent substrate layers 16 are provided. The front plate 10B has a configuration in which the order of the glass substrate 11 and the metallic luster layer 14 is reversed compared to the front plate 10A shown in FIG. Furthermore, the point which has the 2nd transparent base material layer 16 used as a base | substrate in order to form the metallic luster layer 14, and the adhesion layer 15b for bonding these to the glass substrate 11 differs from 10 A of front plates. Other than that, the front plate 10B has the same configuration as the front plate 10A.

  The front plate 10B is attached to the display panel of the display device such that the first transparent substrate layer 12 side is the viewing side and the second transparent substrate layer 16 side is the display panel side. It will be apparent to those skilled in the art that the effects of the present invention as described above can be obtained even with the front plate 10B configured as described above.

  In order to form the colored translucent layer 13 and the metallic luster layer 14 in a frame shape on the substrate, there is a certain limit in yield even if the manufacturing method is devised, and a flat film is formed on the entire surface of the substrate. Yield is low compared to In the front plate 10B, by forming the metallic luster layer 14 on a substrate different from the colored translucent layer 13, the overall thickness increases as compared with the front plate 10A, but the first transparent substrate layer 12 is formed. This is advantageous in that the risk of manufacturing defects when forming a frame-shaped layer on the top can be reduced. This is particularly advantageous when the first transparent substrate layer 12 is an expensive material or when a decorative laminate is formed into a continuous long laminated film.

  Similarly to the first transparent substrate layer 12, the second transparent substrate layer 16 is made of, for example, a polyester resin such as polyethylene terephthalate (PET) or polybutylene terephthalate, a cellulose resin such as triacetyl cellulose, an acrylic resin, or the like. It can be composed of a series resin or a polycarbonate series resin. Among these, polyethylene terephthalate and triacetyl cellulose are preferable from the viewpoints of transparency and processability. The optical characteristics and thickness of the second transparent base material layer 16 can be the same as those of the first transparent base material layer 12.

  Here, when the metallic luster layer 14 formed in a frame shape on the outer edge region of the viewing-side main surface of the second transparent base material layer 16 is a printed layer obtained by printing mirror ink, a desired layer In order to obtain a printed shape, the wetting tension measured based on the wettability evaluation of JIS K6768 (1999) on the main surface of the second transparent base material layer 16 to be printed is 40 mN / m or more. It is preferably 45 mN / m or more.

  A commercially available product can be used as the second transparent base material layer 16 in which at least one main surface has the above-mentioned wettability. As a commercial item, the thing similar to the said 1st transparent base material layer 12 can be used. Moreover, as long as the 2nd transparent base material layer 16 has the said optical characteristic and surface characteristic, resin in which functional materials, such as a slipperiness improving material and an antistatic material, were mix | blended with the said various synthetic resins. It may be a layer.

  As a method for manufacturing the front plate 10B, for example, the colored translucent layer 13 is formed on one main surface of the first transparent base layer 12 in the same manner as described for the front plate 10A, and further, The adhesive layer 15a is formed on the adhesive layer 15 in the same manner as above, or the adhesive layer 15a formed on the release layer is bonded to the release layer, and then the release layer is removed to obtain a laminate. Hereinafter, the obtained laminated body is referred to as a decorative laminated body B-1. Further, the metallic gloss layer 14 is formed on one main surface of the second transparent base material layer 16 in the same manner as described for the front plate 10A, and further, the adhesive layer 15 is adhered thereon in the same manner as the adhesive layer 15. After forming the layer 15b or attaching the adhesive layer 15a formed on the release layer separately from this, the release layer is removed to obtain a laminate. The obtained laminated body is referred to as a decorative laminated body B-2.

Next, the adhesive layer 15a of the decorative laminate B-1 is attached to one main surface of the glass substrate 11, and the adhesive layer 15b of the decorative laminate B-2 is attached to the other main surface of the glass substrate 11, respectively. Thus, the front plate 10B is obtained.
Note that the decorative laminate B-1 and the decorative laminate B-2 were formed on the release layer in the case where the decorative laminate B-1 and the decorative laminate A-2 were not attached to the glass substrate 11 immediately after production. Using the adhesive layer, the decorative laminate B-1 and the decorative laminate B-2 may be prepared with a release layer and stored as they are. When the decorative laminate B-1 and the decorative laminate B-2 do not have a release layer, a release layer may be newly provided on the outer surface of the adhesive layer 15a and the adhesive layer 15b.

  The front plate 10B may have a functional layer having the same shape and the same size as the glass substrate 11 as needed, as long as the effect of the present invention is not impaired. In addition, it is set as the adhesion layer which has an additional function by adding desired amount of various functional materials to the adhesion layer provided in order to adhere the adhesion layers 15a and 15b and the said functional layer to another layer, without impairing an adhesive characteristic. It is also possible. Furthermore, it is possible to replace the second transparent base material layer 16 with a functional layer while ensuring the above characteristics as a printing surface when the metallic gloss layer 14 is a printing layer. In this case, it is advantageous in that a function can be added without changing the entire thickness of the front plate 10B, but depending on the type of the functional layer, it may be economically disadvantageous from the viewpoint of the manufacturing yield. .

  FIG. 5 is a cross-sectional view schematically showing still another configuration of the front plate according to the present invention. As shown in FIG. 5, the front plate 10C includes, from the viewing side, the first transparent base layer 12, the colored translucent layer 13, the adhesive layer 15a, the second transparent base layer 16, the metallic luster layer 14, It has the adhesion layer 15b and the glass substrate 11. Compared to the front plate 10A shown in FIG. 3, the front plate 10C has a second transparent base material layer 16 provided on the colored translucent layer 13 instead of forming the metal gloss layer 14 on the colored translucent layer 13. The difference is that an adhesive layer 15b for forming the layer 14 and further adhering them to the glass substrate 11 is provided. Other than that, the front plate 10C has the same configuration as the front plate 10A. Further, the second transparent base material layer 16 and the adhesive layer 15b can be the same as those of the front plate 10B.

  The front plate 10C is attached to the display panel of the display device such that the first transparent base material layer 12 side is the viewing side and the glass substrate 11 side is the display panel side. It will be apparent to those skilled in the art that the effects of the present invention as described above can be obtained even with the front plate 10C configured as described above. Similarly to the front plate 10B, the front plate 10C is formed by forming the metallic luster layer 14 on a separate substrate from the colored translucent layer 13, but the overall thickness increases compared to the front plate 10A. This is advantageous in that it can reduce the risk of production defects when forming a frame-shaped layer on one transparent substrate layer 12.

  As a method for producing the front plate 10C, for example, the decorative laminate B-1 and the decorative laminate B-2 are produced in the same manner as in the case of the front plate 10B. Next, the adhesive layer 15a of the decorative laminate B-1 is placed on the second transparent base material layer 16 of the decorative laminate B-2, and the adhesive layer 15b of the decorative laminate B-2 is placed on one side of the glass substrate 11. The front plate 10 </ b> C is obtained by sticking to the main surface of each. The order in which these are pasted does not affect the function, and can be arbitrarily selected.

In addition, as described above, the decorative laminate B-1 and the decorative laminate B-2 can be used by providing a release layer on the outer surface of the adhesive layer 15a and the adhesive layer 15b, respectively, as described above. It is. Further, a laminate obtained by attaching the adhesive layer 15a of the decorative laminate B-1 to the second transparent base material layer 16 of the decorative laminate B-2 is peeled off the outer surface of the adhesive layer 15b as a decorative laminate C. It is possible to provide a layer and store it, and peel it off during use. Here, each of the release layers may be a release layer formed when an adhesive layer is formed on the release layer and this is attached to each laminate, or a release layer provided after making the laminate. There may be.
The front plate 10C and the front plate 10B are the same in that the colored translucent layer 13 and the metallic luster layer 14 are formed on different substrates. In the front plate 10C, for example, a decorative laminate B- 1 and the decorative laminate B-2, which are separate from each other, are more advantageous than the front plate 10B in that they can be integrated and operated as a decorative laminate C. Further, when the fixing jig is bonded to the surface of the glass substrate 11 opposite to the main surface on which B-1 and B-2 are laminated when fixing to the display device, the configuration of 10C does not involve a film. In addition, since it can be directly bonded to a glass substrate, it is possible to bond with excellent reliability.

  The front plate 10C may have a functional layer of the same shape and the same size as the glass substrate 11 as necessary, as long as the effect of the present invention is not impaired. In addition, it is set as the adhesion layer which has an additional function by adding desired amount of various functional materials to the adhesion layer provided in order to adhere the adhesion layers 15a and 15b and the said functional layer to another layer, without impairing an adhesive characteristic. It is also possible. Furthermore, it is possible to replace the second transparent base material layer 16 with a functional layer while ensuring the above characteristics as a printing surface when the metallic gloss layer 14 is a printing layer. In this case, it is advantageous in that a function can be added without changing the entire thickness of the front plate 10C, but depending on the type of the functional layer, it may be economically disadvantageous from the viewpoint of manufacturing yield. .

  FIG. 6 is a cross-sectional view schematically showing still another configuration of the front plate according to the present invention. As shown in FIG. 6, the front plate 10D includes, from the viewing side, the first transparent base layer 12, the adhesive layer 15a, the colored translucent layer 13, the second transparent base layer 16, the metallic luster layer 14, It has the adhesion layer 15b and the glass substrate 11. Compared to the front plate 10A shown in FIG. 3, the front plate 10D has a colored translucent layer 13 on the main surface of the first transparent base material layer 12 and further does not form the metallic luster layer 14 thereon. The second transparent base material layer 16 is provided between the first transparent base material layer 12 and the glass substrate 11, and the colored translucent layer 13 is formed on the main surface on the first transparent base material layer 12 side. A metallic gloss layer 14 is formed on the main surface on the substrate 11 side, and further, an adhesive layer 15a for adhering to the first transparent base material layer 12 and an adhesive layer 15b for adhering to the glass substrate 11 on both sides thereof, respectively. Is different. Other than that, the front plate 10D has the same configuration as the front plate 10A. The adhesive layer 15a and the adhesive layer 15b can be the same as the adhesive layer 15 of the front plate 10A.

  The second transparent base material layer 16 can be the same as that described for the front plate 10B, but at least the main surface on the side on which the colored translucent layer 13 is printed preferably has the above-described wetting characteristics. As a 2nd transparent base material layer which has the said wetting characteristic on one side, when using a commercial item, the same commercial item demonstrated with the said front plate 10B can be used. When the metallic gloss layer 14 is a printing layer made of mirror ink, it is preferable that both main surfaces of the second transparent base material layer 16 have the above-described wetting characteristics. In the case of using a commercially available product as the second transparent substrate layer having the above-mentioned wettability characteristics on both sides, for example, from the PET film in which the wet tension on both sides is adjusted by an easy adhesion treatment or the like, the above preferable range A PET film having a wetting tension of 10 μm may be selected. Specifically, the names are Cosmo Shine A4100 (manufactured by Toyobo Co., Ltd., single-sided easy adhesion treatment), Cosmo Shine A4300 (manufactured by Toyobo Co., Ltd., double-sided easy adhesion treatment), Toyobo Ester Film E5101 (manufactured by Toyobo Co., Ltd., single-sided corona) Treatment) and the like.

  The front plate 10D is attached to the display panel of the display device such that the first transparent base material layer 12 side is the viewing side and the glass substrate 11 side is the display panel side. It will be apparent to those skilled in the art that the above-described effects of the present invention can be obtained even in the front plate 10D configured as described above. Further, in the front plate 10D, as described above, the colored translucent layer 13 and the metallic luster layer 14 are not formed on the first transparent base layer 12, but these are separately provided on the second transparent base layer 16 provided separately. Forming a layer. This increases the overall thickness compared to the front plate 10A, but is advantageous in that it can avoid the risk of manufacturing defects when forming a frame-shaped layer on the first transparent substrate layer 12. It is. This is particularly advantageous when an expensive functional layer or the like is laminated on the viewing side of the first transparent substrate layer 12 or when a decorative laminate is formed into a continuous long laminated film. .

  As a method for manufacturing the front plate 10D, for example, the adhesive layer 15a is formed on one main surface of the first transparent base material layer 12. A colored translucent layer 13 is formed on one main surface of the second transparent substrate layer 16 in the same manner as described for the front plate 10A, and a first transparent substrate with an adhesive layer 15a is formed thereon. Layer 12 is laminated. Next, a metallic luster layer 14 is formed on the other main surface of the second transparent base material layer 16 in the same manner as described for the front plate 10A, and further on the same as the adhesive layer 15 above. The pressure-sensitive adhesive layer 15b is formed, or the pressure-sensitive adhesive layer 15b formed on the release layer by the same method as described above is pasted together with the release layer to obtain a laminate. Hereinafter, the laminate part excluding the release layer of the obtained laminate is referred to as a decorative laminate D-1.

  Next, the front plate 10 </ b> D is obtained by sticking the adhesive layer 15 b of the decorative laminate D- 1 to one main surface of the glass substrate 11. If a release layer is provided on the adhesive layer 15b, it is removed during use.

  As another method for manufacturing the front plate 10D, for example, the colored translucent layer 13 is formed on one main surface of the second transparent base material layer 16 in the same manner as described for the front plate 10A. Further thereon, an adhesive layer 15a is formed in the same manner as the adhesive layer 15, and a release layer is provided on the outer surface of the adhesive layer 15a. Next, a metallic luster layer 14 is formed on the other main surface of the second transparent base material layer 16 in the same manner as described for the front plate 10A, and further on the same as the adhesive layer 15 above. An adhesive layer 15b is formed to form a laminate. Or after forming the metallic luster layer 14 and the adhesion layer 15b on one main surface of the 2nd transparent base material layer 16 previously, and also providing the peeling layer in the outer surface, 2nd transparent base material layer The colored translucent layer 13 and the adhesive layer 15a may be formed on the other principal surface of the sixteen. Hereinafter, the laminate part excluding the release layer of the obtained laminate is referred to as a decorative laminate D-2. Here, any of the above-mentioned pressure-sensitive adhesive layers may be a pressure-sensitive adhesive layer formed by previously forming a pressure-sensitive adhesive layer on a release layer and attaching the same to each laminate and then removing the release layer. In addition, the release layer may be a release layer that accompanies the adhesive layer formed on the release layer when it is attached to each laminate.

  Next, the adhesive layer 15a of the decorative laminate D-2 is attached to the main surface of the first transparent base material layer 12 on the display panel side, and the adhesive layer 15b is attached to one main surface of the glass substrate 11, respectively. A face plate 10D is obtained. The release layer provided on the adhesive layer 15a or the adhesive layer 15b is removed during use.

  As in the case of the decorative laminate A, the decorative laminate D-2 is not attached to the first transparent base layer 12 or the glass substrate 11 immediately after production, and the adhesive layer 15a and the adhesive layer 15b, respectively. A release layer similar to that described for the decorative laminate A described above may be provided on the outer surface of the decorative layer A for storage, and this may be peeled off during use. Furthermore, the adhesive layer 15a of the decorative laminate D-2 is attached to the first transparent base layer 12 to obtain a laminate (the same laminate as the decorative laminate D-1), and adhesive. A release layer similar to the above may be provided on the outer surface of the layer 15b for storage. As described above, any of the release layers may be a release layer associated with the adhesive layer formed on the release layer attached to each laminate. The decorative laminate D-2 and the first transparent base layer 12 can be laminated in advance in the form of a continuous film, and then bonded to the glass substrate 11.

  The front plate 10D may have a functional layer having the same shape and the same size as the glass substrate 11 as necessary, as long as the effect of the present invention is not impaired. In addition, it is set as the adhesion layer which has an additional function by adding desired amount of various functional materials to the adhesion layer provided in order to adhere the adhesion layers 15a and 15b and the said functional layer to another layer, without impairing an adhesive characteristic. It is also possible. Furthermore, it is also possible to replace the second transparent base material layer 16 with a functional layer while ensuring the above characteristics as a printing surface. In this case, it is advantageous in that a function can be added without changing the overall thickness of the front plate 10D, but depending on the type of the functional layer, it may be economically disadvantageous from the viewpoint of manufacturing yield. .

  FIG. 7 is a cross-sectional view schematically showing still another configuration of the front plate according to the present invention. As shown in FIG. 7, the front plate 10E includes, from the viewing side, the first transparent base layer 12, the adhesive layer 15a, the second transparent base layer 16, the colored translucent layer 13, the metallic gloss layer 14, It has the adhesion layer 15b and the glass substrate 11. Compared to the front plate 10A shown in FIG. 3, the front plate 10E has a colored translucent layer 13 on the main surface of the first transparent base material layer 12 and further does not form the metallic gloss layer 14 thereon. The second transparent base material layer 16 is provided between the first transparent base material layer 12 and the glass substrate 11, the colored translucent layer 13 is provided on the main surface on the glass substrate 11 side, and the metallic luster is provided thereon. The layer 14 is formed, and the adhesive layer 15a for adhering to the first transparent base material layer 12 and the adhesive layer 15b for adhering to the glass substrate 11 are further provided on both sides thereof. Other than that, the front plate 10E has the same configuration as the front plate 10A. The adhesive layer 15a and the adhesive layer 15b can be the same as the adhesive layer 15 of the front plate 10A.

  The second transparent base material layer 16 can be the same as that described for the front plate 10B, but at least the main surface on the side on which the colored translucent layer 13 is printed preferably has the above-described wetting characteristics. As a 2nd transparent base material layer which has the said wetting characteristic on one side, when using a commercial item, the same commercial item demonstrated with the said front plate 10B can be used.

  The front plate 10E is attached to the display panel of the display device such that the first transparent base material layer 12 side is the viewing side and the glass substrate 11 side is the display panel side. It will be apparent to those skilled in the art that the above-described effects of the present invention can be obtained even in the front plate 10E configured as described above. Further, in the front plate 10E, as in the case of the front plate 10D, as described above, the colored translucent layer 13 and the metallic luster layer 14 are not formed on the first transparent base layer 12, but a second transparent substrate provided separately. These layers are formed on the material layer 16. This increases the overall thickness compared to the front plate 10A, but is advantageous in that it can avoid the risk of manufacturing defects when forming a frame-shaped layer on the first transparent substrate layer 12. It is. This is particularly advantageous when the first transparent substrate layer 12 is an expensive material or when a decorative laminate is formed into a continuous long laminated film.

As a method for producing the front plate 10E, for example, the colored translucent layer 13 is formed on one main surface of the second transparent base material layer 16 in the same manner as described for the front plate 10A, A metallic gloss layer 14 is formed on the substrate, and an adhesive layer 15b is formed thereon in the same manner as the adhesive layer 15 to form a laminate. A transparent resin layer can be provided between the colored translucent layer 13 and the metallic luster layer 14 as necessary. In particular, when the metallic luster layer is a vapor deposition layer, discoloration and fogging of the colored translucent layer can be prevented. Hereinafter, the obtained laminated body is referred to as a decorative laminated body E-1.
Next, an adhesive layer 15a is formed on one main surface of the first transparent base material layer 12, and the adhesive layer E-1 is adhered on the main surface that does not have the colored translucent layer 13 and the metallic gloss layer 14. The 1st transparent base material layer 12 is affixed through the layer 15a. Hereinafter, the obtained laminated body is referred to as a decorative laminated body E-2. Next, the front plate 10E is obtained by sticking the adhesive layer 15b of the decorative laminate E-2 to one main surface of the glass substrate 11.

  Or while sticking the adhesion layer 15b of the laminated body E-1 for decoration to one main surface of the glass substrate 11, it is on the other main surface side of the 2nd transparent base material layer 16 of the laminated body E-1 for decoration. The front plate 10E is obtained by bonding the first transparent base material layer 12 through the adhesive layer 15a. Here, the adhesive layer 15 a is formed in advance on the other main surface of the second transparent base material layer 16, or is formed on the display panel side main surface of the first transparent base material layer 12. In addition, all the said adhesion layers may be an adhesion layer formed by previously forming an adhesion layer on a peeling layer, attaching this to each laminated body, and removing a peeling layer.

  In the case where the decorative laminate E-1 or the decorative laminate E-2 is not attached to the first transparent base material layer 12 or the glass substrate 11 immediately after production, like the decorative laminate A, A release layer similar to that described for the decorative laminate A above may be provided on the outer surface of the adhesive layer 15b and stored, and this may be peeled off during use. The release layer may be a release layer that accompanies when an adhesive layer formed on the release layer is attached to each laminate. Furthermore, the pressure-sensitive adhesive layer 15a is formed on the other main surface of the decorative laminate E-1, and is attached to the first transparent base layer 12, and the laminate (the same laminate as that of the decorative laminate E-2 is used). It may be stored as a body).

The front plate 10E may have a functional layer having the same shape and the same size as the glass substrate 11 as necessary, as long as the effect of the present invention is not impaired. In addition, it is set as the adhesion layer which has an additional function by adding desired amount of various functional materials to the adhesion layer provided in order to adhere the adhesion layers 15a and 15b and the said functional layer to another layer, without impairing an adhesive characteristic. It is also possible. Furthermore, it is also possible to replace the first transparent substrate layer 12 and / or the second transparent substrate layer 16 with a functional layer while ensuring the above characteristics as a printing surface. In this case, it is advantageous in that a function can be added without changing the overall thickness of the front plate 10E, but depending on the type of the functional layer, it may be economically disadvantageous from the viewpoint of the manufacturing yield. .
As described above, the front plates 10A to 10E have been described as examples of the embodiment of the present invention. However, the configuration of the front plate of the present invention is not limited to these, and according to required characteristics and the like as long as not departing from the spirit of the present invention. It can be changed as appropriate.

  Examples of the present invention will be described below. Examples 1 to 7 are examples, and example 8 is a comparative example. The present invention is not limited to these examples.

(Example 1)
Similar to the front plate 10A showing the cross-sectional view in FIG. 3, from the viewing side to the configuration of the first transparent substrate layer 12, the colored translucent layer 13, the metallic gloss layer 14, the adhesive layer 15 and the glass substrate 11, A front plate sample 1 having a configuration in which an antireflection layer was added to the viewing side of the first transparent base material layer 12 was produced as follows, and the design properties of the decorative frame were evaluated.
First, an ink used for forming the colored translucent layer 13 was prepared. Cyclopentanone solution containing a copolymer of 9,9-bis [4- (2-hydroxyethoxy) phenyl] fluorene, terephthalic acid, and ethylene glycol (solid content 30% by mass) (manufactured by Nagase ChemteX Corporation, OP- 30), 70 parts by mass of toluene, 5.1 parts by mass of toluene, 0.04 parts by mass of green pigment (manufactured by Nippon Kayaku: GREEN AB), and 0.05 mg of red pigment (manufactured by Nippon Kayaku: Red R20). A part obtained by dissolving 0.02 part by mass of part by weight and a blue pigment (manufactured by Nippon Kayaku: Blue B20) was mixed and stirred for 10 minutes with a mixer to prepare an ink.

  The obtained ink was made of an antireflection film RL1700 (trade name, manufactured by NOF Corporation, 100 mm × 100 mm, film thickness 100 μm) in which an antireflection layer was formed on one side of the PET film to be the first transparent substrate layer 12. The outer periphery of the main surface having no antireflection layer was applied by screen printing so that the outer periphery coincided with the outer periphery of the surface and the frame shape had a width of 10 mm. Then, this was dried at 100 degreeC for 2 minute (s), and the colored translucent layer 13 was formed in the main surface which does not have the antireflection layer of PET film as the 1st transparent base material layer 12. FIG. The thickness of the colored translucent layer 13 was 10 μm. With respect to the colored translucent layer thus obtained, the spectrum was measured in the range of 380 to 1300 nm using a spectrophotometer (manufactured by Shimadzu Corporation, SolidSpec-3700), and the luminous average transmission according to JIS Z8701-1999. When the ratio Tv and chromaticity coordinates (x, y) were calculated, Tv was 72.1%, chromaticity coordinates x was 0.301, and chromaticity coordinates y was 0.306.

  The mirror ink used for forming the metallic gloss layer 14 is MIR41000 (trade name, manufactured by Teikoku Ink Manufacturing Co., Ltd.) and diluent (F-003, manufactured by Teikoku Ink Manufacturing Co., Ltd.) in a mass ratio of MIR41000: F-003 of 100: 15. It produced by mixing so that it might become. The obtained mirror ink was applied on the colored translucent layer 13 formed on the first transparent substrate layer 12 in a frame shape so as to have the same shape and the same size by screen printing. This was again dried at 80 ° C. for 30 minutes to obtain a sheet-like decorative film. The thickness of the metallic luster layer was 10 μm.

  Next, a pressure-sensitive adhesive composition used for forming the pressure-sensitive adhesive layer 15 was prepared. To 14 parts by mass of methyl ethyl ketone, 70 parts by mass of an acrylic pressure-sensitive adhesive (solid content concentration 30% by mass) and 0.5635 parts by mass of a crosslinking agent (isocyanate type) are added, and the resulting mixed solution is stirred with a mixer for 10 minutes. Thus, a pressure-sensitive adhesive composition was obtained. The obtained pressure-sensitive adhesive composition was applied onto a release layer PET sheet (thickness: 75 μm) using an applicator, and dried at 100 ° C. for 5 minutes. The thickness of the adhesive layer was 25 μm. This obtained the peeling film with the adhesion layer 15 of 100 mm x 100 mm and thickness 100 micrometers.

  The release film with the adhesive layer 15 thus obtained is bonded to the side on which the colored translucent layer 13 and the metallic gloss layer 14 of the sheet-like decorative film obtained above are laminated, and the sheet-like decoration with the adhesive layer 15 is obtained. A laminate was obtained. The peeling PET sheet is peeled off from this laminate, and bonded to a glass substrate 11 (100 mm × 100 mm, thickness 1.8 mm), and further subjected to autoclave treatment at a temperature of 60 ° C. and a pressure of 0.95 MPa, whereby the front plate sample 1 is obtained. Obtained.

  The front plate sample 1 according to Example 1 obtained in this manner was viewed from the antireflection layer (first transparent base material layer 12 with antireflection layer) side, which becomes the viewing side when the front plate is used. In the same manner as shown in FIG. 2, it was a front plate sample having an image portion 1 (80 mm × 80 mm) and a decorative frame 2 having a width of 10 mm on the outside thereof. In addition, the surface of the antireflection layer, which is the surface on the viewing side of the sample, had sufficient flatness so that a step due to the decorative frame 2 was not visually recognized. The front plate sample 1 was observed from the antireflection layer side in a room under a fluorescent lamp illumination environment, and the decorative frame 2 was evaluated according to the following criteria.

  As for the hue, “◎” means “transparent color with no color unevenness”, “○” means “slight color unevenness but transparent color”, “color unevenness, good appearance” “Poor” was defined as “x”. Regarding metal gloss, “◎” has a moderate metal gloss with a homogeneous feeling, “○” indicates “slightly dull but feels metallic gloss”, “○”, “too much metal gloss” "There is no metallic luster" or "x".

  As a result of the above observation, the decorative frame 2 of the front plate sample 1 was evaluated to have a bluish glossy gray color with moderately suppressed metallic luster. The glossiness was “◯”.

(Example 2)
Similar to the front plate 10A showing the cross-sectional view in FIG. 3, from the viewing side to the configuration of the first transparent substrate layer 12, the colored translucent layer 13, the metallic gloss layer 14, the adhesive layer 15 and the glass substrate 11, A front plate sample B having a configuration in which an antireflection layer was added to the viewing side of the first transparent base material layer 12 was produced as follows, and the design properties of the decorative frame were evaluated. The difference from Example 1 is that the metallic luster layer 14 was produced as a metal vapor deposition layer.

In the same manner as in Example 1 above, an antireflection film RL1700 (trade name, manufactured by NOF Corporation, 100 mm × 100 mm, film thickness 100 μm) having an antireflection layer formed on one side of the PET film to be the first transparent substrate layer 12 The colored translucent layer 13 was formed in a frame shape having a width of 10 mm in the outer edge region of the main surface having no antireflection layer. The thickness of the colored translucent layer 13 was 6 μm.
Next, a masking film: SAT106T (trade name, manufactured by Sanei Kaken Co., Ltd.) is formed in the central portion (80 mm × 80 mm) of the first transparent substrate layer 12 corresponding to the screen portion where the colored translucent layer 13 is not formed. ). A colored translucent layer 13 is formed on the first transparent substrate layer 12, and aluminum is deposited on the entire masked surface by physical vapor deposition using a resistance heating deposition source. Thereafter, the masking film was peeled off. The film thickness of the metallic luster layer 14 was 0.4 μm. As a result, a sheet-like decorative film having a size of 100 mm × 100 mm and a thickness of 110 μm was obtained.

  Next, a release film with an adhesive layer 15 was prepared in the same manner as in Example 1, and bonded to the side on which the colored translucent layer 13 and the metallic gloss layer 14 of the sheet-like decorative film obtained above were laminated, It was set as the sheet-like decorative laminated body with the adhesion layer 15. FIG. The peeling PET sheet is peeled off from this laminate, and bonded to a glass substrate 11 (100 mm × 100 mm, thickness 1.8 mm), and further subjected to autoclave treatment at a temperature of 60 ° C. and a pressure of 0.95 MPa, whereby the front plate sample 2 is obtained. Obtained.

  The front plate sample 2 according to Example 2 obtained in this way was viewed from the antireflection layer (first transparent base material layer 12 with antireflection layer) side, which becomes the viewing side when the front plate is used. In the same manner as shown in FIG. 2, it was a front plate sample having an image portion 1 (80 mm × 80 mm) and a decorative frame 2 having a width of 10 mm on the outside thereof. In addition, the surface of the antireflection layer, which is the surface on the viewing side of the sample, had sufficient flatness so that a step due to the decorative frame 2 was not visually recognized. The front plate sample 2 was observed in a room under a fluorescent lamp illumination environment from the antireflection layer side, and the decorative frame 2 was evaluated according to the same criteria as in Example 1. As a result of the observation, it is evaluated that the decorative frame 2 of the front plate sample 2 exhibits a bluish glossy gray color with moderately suppressed metallic luster. The feeling was “◎”.

(Example 3)
From the viewing side, similar to the front plate 10B whose sectional view is shown in FIG. 4, the first transparent base layer 12, the colored translucent layer 13, the adhesive layer 15a, the glass substrate 11, the adhesive layer 15b, the metallic gloss layer 14, The front plate sample 3 having a configuration in which the antireflection layer is further added to the viewing side of the first transparent base material layer 12 in addition to the configuration of the second transparent base material layer 16 is manufactured as follows, The design property of was evaluated.

  In the same manner as in Example 1 above, an antireflection film RL1700 (trade name, manufactured by NOF Corporation, 100 mm × 100 mm, film thickness 100 μm) having an antireflection layer formed on one side of the PET film to be the first transparent substrate layer 12 The colored translucent layer 13 was formed in a frame shape having a width of 10 mm in the outer edge region of the main surface not having the antireflection layer of) to produce a first transparent substrate layer 12 with a colored frame / antireflection layer. The thickness of the colored translucent layer 13 was 10 μm. Next, a release film with an adhesive layer 15a was prepared in the same manner as the release film with an adhesive layer 15 of Example 1, and the first transparent substrate layer 12 with the sheet-like colored frame / antireflection layer obtained above was used. The first transparent base layer 12 with the sheet-like colored frame / antireflection layer with the adhesive layer 15a was bonded to the side on which the colored translucent layer 13 was laminated.

  Next, Cosmo Shine A4100 (trade name, manufactured by Toyobo Co., Ltd., 100 mm × 100 mm, film thickness 100 μm) is prepared as a PET film to be the second transparent base material layer 16, and one main surface without the easy adhesion treatment is prepared. A physical vapor deposition method in which a masking film: SAT106T (trade name, manufactured by Sanei Kaken Co., Ltd.) is bonded to the central portion (80 mm × 80 mm) corresponding to the screen portion, and a resistance heating evaporation source is used on the entire surface. After vapor-depositing aluminum, the masking film was peeled off. The metallic luster layer 14 formed on the second transparent base material layer 16 has a frame shape with a width of 10 mm in which the outer periphery of the main surface and the outer periphery of the second transparent base material layer 16 coincide with each other. Was 0.4 μm. This obtained the 2nd transparent base material layer 16 with a metallic luster frame of 100 mm x 100 mm and thickness 110 micrometers. In the same manner as described above, a release film with an adhesive layer 15b is prepared and bonded to the side of the second transparent base material layer 16 with the metallic glossy frame on which the metallic glossy layer 14 is formed, and a sheet-like metallic glossy frame with the adhesive layer 15b is attached. The attached second transparent base material layer 16 was obtained.

  The PET sheet for peeling off the first transparent base material layer 12 with the sheet-like colored frame / antireflection layer obtained above is peeled off, and one main surface of the glass substrate 11 (100 mm × 100 mm, thickness 1.8 mm) is peeled off. Pasted together. Next, the peeling PET sheet of the second transparent base material layer 16 with the sheet-like metallic glossy frame is peeled off and bonded to the other main surface of the glass substrate 11, and further autoclaved at a temperature of 60 ° C. and a pressure of 0.95 MPa. To obtain a front plate sample 3.

  The front plate sample 3 according to Example 3 obtained in this way was viewed from the antireflection layer (first transparent base material layer 12 with antireflection layer) side, which becomes the viewing side when the front plate is used. In the same manner as shown in FIG. 2, it was a front plate sample having an image portion 1 (80 mm × 80 mm) and a decorative frame 2 having a width of 10 mm on the outside thereof. In addition, the surface of the antireflection layer, which is the surface on the viewing side of the sample, had sufficient flatness so that a step due to the decorative frame 2 was not visually recognized. The front plate sample 3 was observed in a room under a fluorescent lamp illumination environment from the antireflection layer side, and the decorative frame 2 was evaluated according to the same criteria as in Example 1. As a result of the observation, it was evaluated that the decorative frame 2 of the front plate sample 3 exhibited a bluish glossy gray color with moderately suppressed metallic luster. The feeling was “◎”.

(Example 4)
The first transparent base layer 12, the adhesive layer 15a, the second transparent base layer 16, the colored translucent layer 13, and the metallic luster layer 14 from the viewing side, similar to the front plate 10E whose sectional view is shown in FIG. The front plate sample 4 having a configuration in which the antireflection layer is added to the viewing side of the first transparent base material layer 12 in addition to the configuration of the adhesive layer 15b and the glass substrate 11 is prepared as follows, The design property was evaluated.

  As the second transparent base material layer 16, Cosmo Shine A4100 (trade name, manufactured by Toyobo Co., Ltd., 100 mm × 100 mm, film thickness 100 μm), which is a PET film whose one surface is subjected to easy adhesion treatment, was prepared. In the same manner as in Example 1 in which the colored translucent layer 13 and the metallic luster layer 14 were formed on the first transparent base layer 12, the colored semitransparent layer 13 and the mirror ink were printed on the easy adhesion treated surface of Cosmo Shine A4100. A metallic gloss layer 14 as a layer was formed. As a result, a sheet-like decorative film having a thickness of 120 μm of an outer edge region in which the colored translucent layer 13 and the metallic gloss layer 14 were formed was obtained. The colored translucent layer 13 and the metallic luster layer 14 each had a thickness of 10 μm.

  Next, a release film with an adhesive layer 15b was prepared in the same manner as the release film with an adhesive layer 15 of Example 1, and the colored translucent layer 13 and the metallic gloss layer 14 of the sheet-like decorative film obtained above were laminated. The sheet-like decorative film with the pressure-sensitive adhesive layer 15b was obtained by pasting on the coated side.

  In addition, an antireflection film RL1700 (trade name, NOF Corporation) in which a release film with an adhesive layer 15a was produced in the same manner as described above, and an antireflection layer was formed on one side of the PET film to be the first transparent base layer 12 The first transparent base material layer 12 with an adhesive layer / antireflection layer was bonded to a main surface having no antireflection layer (100 mm × 100 mm, 100 μm thickness). The PET sheet for peeling was peeled off from this, and it bonded together to the surface without the adhesion layer 15b of the said sheet-like decorative film with an adhesion layer. The release sheet remaining on the adhesive layer 15b side of the obtained laminate is peeled off and bonded to one main surface of the glass substrate 11 (100 mm × 100 mm, thickness 1.8 mm), and further, the temperature is 60 ° C. and the pressure is 0.95 MPa. A front plate sample 4 was obtained by autoclaving.

  The front plate sample 4 according to Example 4 obtained in this manner was viewed from the antireflection layer (first transparent base material layer 12 with antireflection layer) side, which becomes the viewing side when the front plate is used. In the same manner as shown in FIG. 2, it was a front plate sample having an image portion 1 (80 mm × 80 mm) and a decorative frame 2 having a width of 10 mm on the outside thereof. In addition, the surface of the antireflection layer, which is the surface on the viewing side of the sample, had sufficient flatness so that a step due to the decorative frame 2 was not visually recognized. The front plate sample 4 was observed in a room under a fluorescent lamp illumination environment from the antireflection layer side, and the decorative frame 2 was evaluated according to the same criteria as in Example 1. As a result of the observation, it was evaluated that the decorative frame 2 of the front plate sample 4 exhibited a bluish glossy gray color with moderately suppressed metallic luster. The feeling was “◯”.

(Example 5)
The first transparent base layer 12, the adhesive layer 15a, the colored translucent layer 13, the second transparent base layer 16, and the metallic luster layer 14 from the viewing side, similar to the front plate 10D whose sectional view is shown in FIG. A front plate sample 5 having a configuration in which an antireflection layer is added to the viewing side of the first transparent base material layer 12 in addition to the configuration of the adhesive layer 15b and the glass substrate 11 is produced as follows, The design property was evaluated.

  As the second transparent base material layer 16, Cosmo Shine A4100 (trade name, manufactured by Toyobo Co., Ltd., 100 mm × 100 mm, film thickness 100 μm), which is a PET film whose one surface is subjected to easy adhesion treatment, was prepared. In the same manner as in Example 5, the colored translucent layer 13 was formed on the easy adhesion treated surface of the second transparent base material layer 16. Further, in Example 5, the metallic gloss layer 14 that is a printing layer made of the mirror ink formed on the colored translucent layer 13 is subjected to the easy adhesion treatment of the second transparent base material layer 16 instead of the colored translucent layer 13. Not formed on the surface. As a result, a sheet-like decorative film having a thickness of 120 μm of an outer edge region in which the colored translucent layer 13 and the metallic gloss layer 14 were formed was obtained. The colored translucent layer 13 and the metallic luster layer 14 each had a thickness of 10 μm.

Next, a release film with an adhesive layer 15b was prepared in the same manner as the release film with an adhesive layer 15 of Example 1, and bonded to the side on which the metallic gloss layer 14 of the sheet-like decorative film obtained above was formed. A sheet-like decorative film with an adhesive layer 15b was obtained.
In the same manner as in Example 5, a first transparent base layer 12 with an adhesive layer 15a and an antireflection layer was prepared, and the peeling PET sheet was peeled off from this, and the colored translucent layer 13 of the sheet-like decorative film with the adhesive layer was peeled off. It was bonded to the surface on which was formed. The release sheet remaining on the adhesive layer 15b side of the obtained laminate is peeled off and bonded to one main surface of the glass substrate 11 (100 mm × 100 mm, thickness 1.8 mm), and further, the temperature is 60 ° C. and the pressure is 0.95 MPa. A front plate sample 5 was obtained by autoclaving.

  The front plate sample 5 according to Example 5 obtained in this way was viewed from the antireflection layer (first transparent base material layer 12 with antireflection layer) side, which becomes the viewing side when the front plate is used. In the same manner as shown in FIG. 2, it was a front plate sample having an image portion 1 (80 mm × 80 mm) and a decorative frame 2 having a width of 10 mm on the outside thereof. In addition, the surface of the antireflection layer, which is the surface on the viewing side of the sample, had sufficient flatness so that a step due to the decorative frame 2 was not visually recognized. The front plate sample 5 was observed from the antireflection layer side in a room under a fluorescent lamp illumination environment, and the decorative frame 2 was evaluated according to the same criteria as in Example 1. As a result of the observation, it is evaluated that the decorative frame 2 of the front plate sample 5 exhibits a bluish glossy gray color with a moderately suppressed metallic luster. The feeling was “◯”.

(Example 6)
The first transparent base layer 12, the adhesive layer 15a, the second transparent base layer 16, the colored translucent layer 13, and the metallic luster layer 14 from the viewing side, similar to the front plate 10E whose sectional view is shown in FIG. The front plate sample 6 having a configuration in which an antireflection layer is added to the viewing side of the first transparent base material layer 12 in the configuration of the adhesive layer 15b and the glass substrate 11 is changed only in the formation method of the metallic gloss layer 14. It produced similarly to Example 4 and evaluated the designability of the decoration frame. The difference from Example 4 is that the metallic gloss layer 14 was produced as a metal vapor deposition layer. Moreover, the method similar to Example 2 was used for the method of producing the metallic luster layer 14 as a metal vapor deposition layer.

  The front plate sample 6 according to Example 6 obtained in this way was viewed from the antireflection layer (first transparent base material layer 12 with antireflection layer) side, which becomes the viewing side when the front plate is used. In the same manner as shown in FIG. 2, it was a front plate sample having an image portion 1 (80 mm × 80 mm) and a decorative frame 2 having a width of 10 mm on the outside thereof. In addition, the surface of the antireflection layer, which is the surface on the viewing side of the sample, had sufficient flatness so that a step due to the decorative frame 2 was not visually recognized. The front plate sample 6 was observed in a room under a fluorescent lamp illumination environment from the antireflection layer side, and the decorative frame 2 was evaluated according to the same criteria as in Example 1. As a result of the observation, it is evaluated that the decorative frame 2 of the front plate sample 6 exhibits a bluish glossy gray color with moderately suppressed metallic luster, and the evaluation result is that the hue is “◎”, the metallic luster. The feeling was “◎”.

(Example 7)
The first transparent base layer 12, the adhesive layer 15a, the colored translucent layer 13, the second transparent base layer 16, and the metallic luster layer 14 from the viewing side, similar to the front plate 10D whose sectional view is shown in FIG. An example in which the front plate sample 7 having a configuration in which an antireflection layer is added to the viewing side of the first transparent base material layer 12 is changed only in the method of forming the metallic gloss layer 14 in addition to the configuration of the adhesive layer 15b and the glass substrate 11 is used. 5 was produced, and the design properties of the decorative frame were evaluated. The difference from Example 5 is that the metallic gloss layer 14 was produced as a metal vapor deposition layer. Moreover, the method similar to Example 3 was used for the method of producing the metallic luster layer 14 as a metal vapor deposition layer.

  The front plate sample 7 according to Example 7 obtained in this way was viewed from the antireflection layer (first transparent base material layer 12 with antireflection layer) side, which becomes the viewing side when the front plate is used. In the same manner as shown in FIG. 2, it was a front plate sample having an image portion 1 (80 mm × 80 mm) and a decorative frame 2 having a width of 10 mm on the outside thereof. In addition, the surface of the antireflection layer, which is the surface on the viewing side of the sample, had sufficient flatness so that a step due to the decorative frame 2 was not visually recognized. The front plate sample 7 was observed from the antireflection layer side in a room under a fluorescent lamp illumination environment, and the decorative frame 2 was evaluated according to the same criteria as in Example 1. As a result of the observation, it is evaluated that the decorative frame 2 of the front plate sample 7 exhibits a bluish glossy gray color with moderately suppressed metallic luster, and the evaluation result is that the hue is “◎” and the metallic luster. The feeling was “◎”.

(Example 8)
From the viewing side, a front plate sample 8 having a constitution of a hard coat layer, a colored translucent layer, a metallic luster layer, a second transparent base material layer, an adhesive layer and a glass substrate as a functional layer was produced by the following method.
As the second transparent base material layer, Cosmo Shine A4100 (trade name, manufactured by Toyobo Co., Ltd., 100 mm × 100 mm, film thickness 100 μm), which is a PET film on which one surface was easily adhered, was prepared. In the same manner as in Example 1 in which the colored translucent layer 13 and the metallic luster layer 14 are formed on the first transparent substrate layer 12, the metal which is the printing layer using the mirror ink on the easy adhesion treated surface of Cosmo Shine A4100. A gloss layer was formed, and a colored translucent layer was formed thereon. As a result, a sheet-like decorative film having a thickness of 120 μm in an outer edge region in which a metallic gloss layer and a colored translucent layer were formed 100 mm × 100 mm was obtained. The thicknesses of the metallic luster layer and the colored translucent layer were 10 μm and 6 μm, respectively.

The composition for forming a hard coat layer having the following composition was applied to the entire surface of the decorative film on which the metallic gloss layer and the colored translucent layer were laminated by the bar coating method, and dried at 80 ° C. for 5 minutes. Then, a hard coat layer having a thickness of 5 μm was formed by irradiating with ultraviolet rays (light quantity: 230 mJ / cm 2) with a high-pressure mercury lamp and curing.
As a coating liquid composition for forming a hard coat layer, an ultraviolet curable resin (manufactured by Arakawa Chemical Industry Co., Ltd., product name “Beam Set 575CB”, concentration 100%, containing a photopolymerization initiator) is added to a leveling agent ( 0.1 parts by weight (product name “BYK-355”, concentration 52%) manufactured by Big Chemie Japan Co., Ltd.) was added and diluted with propylene glycol monomethyl ether to prepare a 40% concentration.

  Next, a release film with an adhesive layer was prepared in the same manner as the release film with the adhesive layer 15 of Example 1, and was bonded to the surface of the decorative film that was not subjected to the easy adhesion treatment of the second transparent substrate layer. . The release sheet is peeled off from this, bonded to one main surface of the glass substrate 11 (100 mm × 100 mm, thickness 1.8 mm), and further subjected to autoclave treatment at a temperature of 60 ° C. and a pressure of 0.95 MPa to obtain a front plate sample 8. Obtained.

  When the front plate sample 8 is viewed from the hard coat layer side, which is the viewing side when the front plate is used, the image portion 1 (80 mm × 80 mm) and the width 10 mm on the outer side thereof are the same as shown in FIG. It was a front plate sample having the decorative frame 2. However, when the hard coat layer was formed, coating unevenness occurred in the printed step portions of the metallic gloss layer and the colored translucent layer, a uniform hard coat layer was not obtained, and the front plate sample lacked surface flatness. . Further, the pigment in the colored translucent layer was partially degraded by ultraviolet irradiation, resulting in color unevenness. The front plate sample 8 was observed from the antireflection layer side in a room under a fluorescent lamp illumination environment, and the decorative frame 2 was evaluated according to the same criteria as in Example 1. As a result of the observation, it was evaluated that the decorative frame 2 of the front plate sample 8 exhibited a bluish glossy gray color with moderately suppressed metallic luster. The feeling was “◯”.

  The present invention can be applied to FPD devices such as a liquid crystal display, a plasma display, an organic EL display, and a mobile display.

DESCRIPTION OF SYMBOLS 10,10A-10E ... Front plate, 11 ... Glass substrate, 12 ... 1st transparent base material layer, 13 ... Colored translucent layer, 14 ... Metal gloss layer, 15, 15a, 15b ... Adhesive layer, 16 ... 2nd 20 ... display device, 21 ... display panel, 22 ... outer frame 1 ... image portion, 2 ... decorative frame

Claims (11)

A front plate for a display device arranged on the viewing side of the display panel,
A plate-like glass substrate with a flat main surface;
A first transparent substrate layer having a main surface of the same shape and the same size as the main surface of the glass substrate, which is disposed on the main surface on the viewing side of the glass substrate;
A frame shape having a size corresponding to the outer edge region of the main surface of the glass substrate, formed by printing on the display panel side of the first transparent base material layer using an ink containing a transparent binder resin and a colorant. A colored translucent layer of
It is a metallic luster layer having the same shape and the same size as the colored translucent layer disposed on the display panel side with respect to the colored translucent layer, and is recognized without going through the colored translucent layer when viewed from the viewing side. With a metallic luster layer that does not have areas,
The front plate, wherein the colored translucent layer and the metallic luster layer are disposed together with the pressure-sensitive adhesive layer in a laminated form or separately.   The front plate according to claim 1, wherein the colored translucent layer has a thickness of 1 to 15 μm.   The front plate according to claim 1 or 2, wherein the colored translucent layer has a visible light transmittance of 15 to 80%.   The metallic luster layer contains at least one selected from the group consisting of gold, silver, aluminum, platinum, titanium, chromium, nickel, tin, iron, cobalt and an alloy containing at least one of these. The front plate according to any one of the above.   The front plate according to any one of claims 1 to 4, wherein the metallic luster layer is formed by metal vapor deposition or printing using a mirror ink.   Furthermore, it has the antireflection layer or hard-coat layer which has the main surface of the same shape and the same dimension as the main surface of this 1st transparent base material layer on the main surface at the visual recognition side of said 1st transparent base material layer. The front plate according to any one of 1 to 5.   The front plate according to any one of claims 1 to 6, wherein the colored translucent layer is formed with a main surface on the display panel side of the first transparent base material layer as a printing surface.   The second transparent base material layer further having a main surface of the same shape and the same size as the main surface of the glass substrate on the display panel side from the first transparent base material layer. The front plate according to any one of claims 1 to 7, wherein one main surface is a printing surface of the colored translucent layer.   The colored translucent layer is formed on the main surface on the viewing side of the second transparent base material layer, and the metallic luster layer is formed on the main surface on the display panel side of the second transparent base material layer. The front plate according to claim 8.   It is a manufacturing method of the front board for display apparatuses of any one of Claims 1-9, Comprising: The said colored translucent layer is located in the display panel side rather than a said 1st transparent base material layer. The printing surface is selected, and the ink containing the transparent binder resin and the colorant is printed on the printing surface in a frame shape having a size corresponding to the outer edge region of the main surface of the glass substrate, and the colored translucent layer is formed. The manufacturing method including the process to form.   The metallic luster layer is positioned closer to the display panel than the colored translucent layer, and is the same shape and size as the colored translucent layer, and is recognized without the colored translucent layer when viewed from the viewing side. The manufacturing method according to claim 10, further comprising a step of forming by metal vapor deposition or printing using mirror ink so as not to have a region.

Images