WO2006025314A1 - 電磁波遮蔽材及びそれを用いた画像表示装置 - Google Patents
電磁波遮蔽材及びそれを用いた画像表示装置 Download PDFInfo
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- WO2006025314A1 WO2006025314A1 PCT/JP2005/015645 JP2005015645W WO2006025314A1 WO 2006025314 A1 WO2006025314 A1 WO 2006025314A1 JP 2005015645 W JP2005015645 W JP 2005015645W WO 2006025314 A1 WO2006025314 A1 WO 2006025314A1
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- layer
- image display
- electromagnetic wave
- wave shielding
- conductor layer
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0094—Shielding materials being light-transmitting, e.g. transparent, translucent
- H05K9/0096—Shielding materials being light-transmitting, e.g. transparent, translucent for television displays, e.g. plasma display panel
Definitions
- the present invention relates to an image display device (display) using an image display element such as a cathode ray tube or a plasma display panel, and an electromagnetic wave shielding material used by being arranged on the observer side of the image display device. is there.
- electromagnetic waves in this frequency band together with visible light constituting the image.
- This is simply called electromagnetic waves. Therefore, in order to prevent electromagnetic interference (EMI) to other electronic devices due to this electromagnetic wave, an electromagnetic wave shielding material having a band-pass filter characteristic that transmits visible light but does not transmit electromagnetic wave to the viewer side of the image display device. It is done to install.
- EMI electromagnetic interference
- Typical examples of the electromagnetic wave shielding material include a so-called mesh-like conductor layer in which a large number of openings that transmit visible light are arranged adjacent to a conductor layer made of a metal such as copper or iron. .
- a metal oxide or the like is usually formed on the outer surface on the observer side in the mesh conductor layer. A blackening layer made of is applied (see Patent Document 1).
- the mesh conductor layer (mesh portion) is usually surrounded.
- a continuum conductor layer without an opening is provided as a frame at the periphery (see Patent Document 2). This frame part does not transmit the display image and is irrelevant to the image display function, and it is necessary to make the area of the screen as large as possible. Formed in the position.
- an image display device having this type of electromagnetic wave shielding material installed on the front side is also provided with a black light-shielding layer at the periphery of the screen in order to impart design.
- the border by this black light shielding layer is usually the periphery of the glass plate laminated and integrated with the electromagnetic shielding material. It is formed by printing with black ink on a predetermined part of the film (see Patent Document 3)
- a desired display pattern is formed by means of ⁇ .
- a light source such as a miniature bulb or LED on the back of the display pattern.
- Patent Document 1 JP-A 61-134189
- Patent Document 2 Japanese Patent Laid-Open No. 11-233992
- Patent Document 3 Japanese Patent Laid-Open No. 2002-9484
- the present invention has been made in view of such problems, and an object of the present invention is to easily form a border with a black light-shielding layer on the peripheral edge of the screen and to provide a desired display pattern.
- An object of the present invention is to provide an electromagnetic wave shielding material that can be easily formed, and to provide an image display device using the same.
- the present invention is an electromagnetic wave shielding material that is incorporated in an image display device having an image light emitting unit including a central portion and an outer edge portion, and is disposed on the viewer side of the image light emitting unit, on the outer surface of the viewer side.
- a light-shielding conductor layer having a blackening layer, the conductor layer including a large number of openings and disposed opposite to the center of the image light-emitting portion, and provided around the mesh portion.
- An electromagnetic wave shielding material comprising a frame portion disposed opposite to the outer edge portion of the image light emitting portion.
- the present invention is the electromagnetic wave shielding material, wherein the frame portion has a translucent pattern portion having a pattern-like opening force.
- the present invention is the electromagnetic wave shielding material, wherein the frame portion extends further outward from the outer edge portion of the image light emitting portion, and the translucent pattern portion is disposed corresponding to the outer edge portion. .
- the present invention is an electromagnetic wave shielding material, characterized in that a transparent base material that supports the conductor layer is laminated on the image light emitting portion side of the conductor layer.
- the present invention is the electromagnetic wave shielding material, wherein the conductor layer is laminated on a transparent substrate via a transparent adhesive layer.
- the present invention is the electromagnetic wave shielding material, wherein a fender layer is provided on the blackened layer of the conductor layer.
- the present invention is an electromagnetic wave shielding material characterized in that a transparent resin layer is provided so as to cover the mesh portion of the conductor layer.
- the present invention is an electromagnetic wave shielding material characterized in that at least one of a color tone adjusting layer, a near infrared shielding layer, an antireflection layer, and an ultraviolet ray absorbing layer is provided on the transparent resin layer. .
- the present invention is an image display device including an image light emitting unit including a central portion and an outer edge portion, and an electromagnetic wave shielding material arranged on the viewer side of the image light emitting unit!
- the electromagnetic wave shielding material includes a light-shielding conductive layer having a blackened layer on the outer surface on the viewer side, and the conductive layer includes a large number of openings and faces the central portion of the image light emitting unit.
- It is an image display device characterized by having an arranged mesh part and a frame part provided around the mesh part and arranged to face the outer edge part of the image light emitting part.
- the present invention is the image display device characterized in that the frame portion has a translucent pattern portion having a pattern-like opening force.
- the present invention is an image display device characterized in that the frame portion extends further outward from the outer edge portion of the image light emitting portion, and the translucent pattern portion is disposed corresponding to the outer edge portion. .
- the present invention is an image display device characterized in that a transparent base material that supports the conductor layer is laminated on the image light emitting portion side of the conductor layer.
- the present invention is the image display device described above, wherein the conductor layer is laminated on a transparent substrate via a transparent adhesive layer.
- the present invention is an image display device characterized in that a fender layer is provided on the blackened layer of the conductor layer.
- the present invention is an image display device characterized in that a transparent resin layer is provided so as to cover the mesh portion of the conductor layer.
- the present invention is an image display device characterized in that at least one of a color tone adjusting layer, a near infrared shielding layer, an antireflection layer, and an ultraviolet ray absorbing layer is provided on the transparent resin layer. .
- the electromagnetic wave shielding member of the present invention it is not necessary to add a separate printing process or the like when forming a border with a black light shielding layer on the peripheral edge of the screen in the image display device, and the number of processes and material costs increase. In addition, there is an effect that there is no shading unevenness that tends to occur in printing.
- the display pattern can be emitted without adding the process and material costs for installation or increasing the power consumption.
- FIG. 1 is a plan view showing an example of an electromagnetic wave shielding material according to the present invention.
- FIG. 2 is a cross-sectional view showing an example of the XX cross section in FIG.
- FIG. 3 is a cross-sectional view showing another example of the XX cross section in FIG. 1.
- FIG. 4 is a cross-sectional view showing another embodiment of the cross-sectional configuration shown in FIG.
- FIG. 5 is a front view showing an example of the image display device according to the present invention in a state when the power is not turned on and a state when the power is turned on.
- FIG. 6 is a cross-sectional view showing an example of an XX cross section in FIG. 5 (B).
- FIG. 7 is a plan view showing an electromagnetic wave shielding material according to the prior art.
- FIG. 8 is a cross-sectional view showing an XX cross section in FIG.
- FIG. 9 is a front view showing an example of an image display device using an electromagnetic wave shielding material according to the prior art in a state when the power is not turned on and a state when the power is turned on.
- FIG. 10 is a cross-sectional view showing an XX cross section in FIG. 9 (B).
- FIG. 1 is a plan view showing an example of an electromagnetic wave shielding material according to the present invention
- FIG. 2 is a cross-sectional view showing an example of the XX cross section in FIG. 1
- FIG. 3 is another cross section of the XX cross section in FIG.
- FIG. 4 is a cross-sectional view showing another embodiment of the cross-sectional configuration shown in FIG. 3
- FIG. 5 (A) is a front view showing an example of the image display device according to the present invention when the power is not turned on.
- FIG. 5 (B) is a front view showing the state when the power is turned on
- FIG. 6 is a cross-sectional view showing an example of the XX cross section in FIG. 5 (B).
- 7 to 10 show comparative examples with the present invention
- FIG. 1 is a plan view showing an example of an electromagnetic wave shielding material according to the present invention
- FIG. 2 is a cross-sectional view showing an example of the XX cross section in FIG. 1
- FIG. 3 is
- FIG. 7 is a plan view showing an electromagnetic wave shielding material according to the prior art
- FIG. 8 is a cross-sectional view showing the XX cross section in FIG.
- Fig. 9 (A) is a front view showing an example of an image display device using an electromagnetic wave shielding material according to the conventional technology when the power is not turned on
- Fig. 9 (B) is a front view showing the same state when the power is turned on.
- 10 is a cross-sectional view showing an XX cross section in FIG. 9 (B).
- FIGS. 1 and 3 parts corresponding to FIGS. 1 and 3 are denoted by the same reference numerals, and parts corresponding to FIGS. 5 and 6 are denoted by the same reference numerals in FIGS. Description is omitted.
- the image display device D includes an image display element 5 including an image light emitting unit 5a, an electromagnetic wave shielding material 1 provided to an observer H of the image display element 5, and this A transparent base material 32 provided on the observer H side of the electromagnetic wave shielding material 1 via a transparent adhesive layer 31 is provided.
- the image display element 5, the electromagnetic wave shielding material 1, and the transparent base material 32 are held by the frame body 6.
- the electromagnetic wave shielding material 1 includes a light-shielding conductor layer 11 having a black glazing layer 12 formed on the outer surface of the observer H side, and the conductor layer 11 has a large number of apertures 2a.
- the mesh portion 2 includes a frame portion 3 that is provided around the mesh portion 2 and surrounds the mesh portion 2.
- the image light emitting part 5a includes a center part 5b and an outer edge part 5c on the outer periphery of the center part 5b.
- the mesh part 2 is arranged to face the center part 5b of the image light emitting part 5a, and the frame part 3 is the image light emitting part 5a. It is arranged to face the outer edge 5c of the.
- the electromagnetic shielding material 1 of the present invention has a shape whose entire outline corresponds to the shape of the screen of the image display device, and is usually a rectangle as shown in Fig. 1 or a shape obtained by slightly deforming it. .
- the central region of the electromagnetic wave shielding material 1 includes a mesh portion 2 that is arranged adjacent to a large number of openings that transmit a display image and that faces the central portion 5b of the image light emitting portion 5a of the image display element. It has become.
- a region surrounding the periphery of the mesh portion 2 is a frame portion 3 that faces the outer edge portion 5c of the image light emitting portion of the image display element.
- the opening of the mesh portion 2 is illustrated as being enlarged and exaggerated from the actual size.
- the frame portion 3 of the electromagnetic wave shielding material 1 is provided with a translucent pattern portion 4 in which an opening having a desired shape such as a product name in a plan view is formed.
- the translucent pattern portion 4 is located at a position facing the outer edge portion 5c of the light emitting portion 5a of the image display element 5, and when the image display element 5 emits light, the light from the image display element 5 is opened. Transmits through and emits light in a pattern. As a result, a pattern such as a product name is emitted and displayed in a predetermined area of the outer edge 5c of the screen. Further, when the image display element 5 is not emitting light, the translucent pattern portion 4 does not emit light, and the pattern disappears because it is substantially inconspicuous.
- FIG. 2 and FIG. 3 show typical forms of the cross-sectional shape of the electromagnetic shielding material 1 shown in FIG.
- the electromagnetic wave shielding material 1 shown in FIG. 2 includes a conductor layer 11 and a black layer 12 formed on the surface (observer side). An opening 2 a that transmits image light is formed in the mesh portion 2, and a patterned opening 4 a is formed at a predetermined position of the frame portion 3.
- a transparent adhesive layer 13 and a transparent substrate 14 are further laminated. 3 shows a form in which the transparent base material 14 side faces the image display element, but in the case where the transparent base material 14 faces the observer side, the transparent base material 14 side of the conductor layer 11 ( The black layer 12 is located on the lower side in the figure.
- FIG. 4 In addition to the cross-sectional configuration of the electromagnetic wave shielding material of the present invention, a single-layer configuration made of a black conductor is used, and the conductive material on the transparent substrate 14 without the transparent adhesive layer 13 in FIG. There is a structure in which a body layer 11 and a black layer 12 are laminated.
- FIG. 4 there is a configuration in which various functional layers are stacked in addition to the configuration of FIG.
- 21 is a flaw-proofing layer
- 22 is a transparent resin layer
- 23 is an adhesive layer / tone control layer
- 24 is a near-infrared shielding layer
- 25 is an adhesive layer
- 26 is an anti-reflection layer / ultraviolet absorption layer It is.
- the image display device D of the present invention can be obtained by disposing the electromagnetic wave shielding material 1 on the observer H side of various image display elements 5 (including the image light emitting unit).
- the target image display element 5 include a plasma display panel (PDP), a cathode ray tube (CRT), an electroluminescence element (EL element), and a liquid crystal display element (LCD).
- the electromagnetic wave shielding material 1 is arranged on the viewer side (image light emitting surface) of the image display element.
- the electromagnetic wave shielding material of the type shown in FIG. 2 or 3 is used, and an adhesive layer is provided if necessary. And a form in which the electromagnetic wave shielding material 1 is laminated on the transparent substrate 32 as shown in FIG. 6 and then arranged on the front surface of the image display element. There is.
- the image display device D shown in FIGS. 5 (A) and (B) is shown in FIG. 1 on the surface of the observer H side of the image display element 5 such as a plasma display panel.
- An electromagnetic shielding material 1 such as is arranged.
- the inner edge of the frame part 3 of the electromagnetic wave shielding material 1 faces the outer edge part 5c of the image light emitting part 5a of the image display element 5 and the black layer (note that illustration is omitted for the sake of simplicity,
- the conductor layer 11 in FIG. 6 has a blackened layer on the side facing the transparent substrate 32.) is arranged so as to face the viewer side.
- FIG. 1 In the example of FIG.
- the electromagnetic wave shielding material 1 faces the image display element 5 in a state where the black color layer side is laminated on a transparent substrate 32 such as a glass plate via a transparent adhesive layer 31. Yes.
- the frame portion of the electromagnetic shielding material 1 and the image display element 5 laminated on the transparent substrate 32 is exposed in a state where at least the portion including the translucent pattern portion 4 of the frame portion 3 of the electromagnetic shielding material 1 is exposed. Covered by body 6.
- the image display device D having such a configuration has a black color at the periphery of the effective display portion 7 of the screen as in the case of Fig. 9 (A) of the prior art.
- this black shading layer border 8 is formed by printing the black shading layer 33 using black ink on the back surface of the transparent substrate 32 separately from the electromagnetic shielding material 1 as shown in FIG.
- the border 8 is constituted by the inner peripheral side of the frame portion 3 of the electromagnetic wave shielding material 1 having the black glaze layer 12 on the surface as shown in FIG. Different.
- the effective display portion 7 is shielded by the border 8 (the frame portion 3) of the image light emitting portion 5a of the image display element, as shown in the sectional view of FIG. This is the area excluding the outer edge, which means the area where the image can actually be observed.
- the image display device D shown in FIG. 5 (A) When the image display device D shown in FIG. 5 (A) is turned on, as shown in FIG.
- the translucent pattern portion 4 in the border 8 of the light shielding layer emits light by the transmitted image light and displays a desired pattern.
- the display pattern portion disappears as shown in FIG.
- the display pattern 9 is printed with ink on the frame 6 so that the display pattern 9 is displayed both when the power is turned on and when the power is not turned on. It remains displayed.
- the conductor layer 11 constituting the electromagnetic wave shielding material 1 is a layer responsible for the electromagnetic wave shielding function, and even if the conductive layer 11 itself is opaque, a large number of openings are arranged adjacent to each other.
- the shielding function and light transmission are compatible.
- Examples of the planar shape of the opening include a triangle such as a regular triangle, a square such as a square, a rectangle, a rhombus and a trapezoid, a polygon such as a hexagon, a circle and an ellipse.
- the shape of the opening is arbitrary and not particularly limited, but a square is typical.
- the mesh portion 2 is formed by arranging a large number of openings having these shapes adjacent to each other.
- each opening has the same shape and the same size on the entire surface, and a line portion having a uniform width between the openings. It becomes.
- the width of the line portion between the openings is 25 m or less, preferably 20 / z m or less, in view of the aperture ratio and the non-visibility of the mesh.
- the opening size is [line interval or line pitch]-[line width].
- the aperture size is 150 m or more, and more preferably 200 m or more. This is preferable.
- the bias angle (angle formed between the mesh line and the outer periphery of the electromagnetic wave shielding material) may be appropriately set to an angle at which moiré is not likely to occur in consideration of the pixel pitch and light emission characteristics of the image display element (see FIG. 1 is set to 45 ° with respect to the lower side).
- the material used for the conductor layer 11 is not particularly limited as long as it is a substance having sufficient conductivity to exhibit electromagnetic wave shielding performance, but it is usually preferable to use a metal foil in terms of good conductivity. Yes.
- the conductor layer 11 in a form laminated with the transparent substrate 14 can be formed by vapor deposition, plating, metal foil lamination, or the like on the transparent substrate 14. Examples of the metal foil or metal layer material include gold, silver, copper, iron, nickel, chromium, and aluminum.
- the metal used may be an alloy, or the metal layer may be a single layer or multiple layers. For example, in the case of iron, low carbon rimmed steel is low carbon steel such as low carbon aluminum killed steel, Ni-Fe compound.
- Gold, Invar alloy and the like are preferable.
- the metal when the metal is copper, it becomes copper or a copper alloy.
- U which prefers electrolytic copper foil.
- the thickness of the conductor layer 11 made of metal foil or metal layer is about 1 to about LOO / zm, and preferably about 5 to 20 / ⁇ . If the thickness is too thin, it will be difficult to obtain sufficient electromagnetic shielding performance due to an increase in electrical resistance, and if the thickness is too thick, it will be difficult to obtain a high-definition mesh shape. Permeability may decrease, or the viewing angle of the display may be reduced due to interference with the sides of the mesh.
- the surface of the metal foil or metal layer to be the conductor layer 11 is preferably a rough surface in order to improve the adhesion with an adjacent layer such as a transparent adhesive layer.
- a rough surface can be obtained on the surface (the surface of the black layer) simultaneously with the formation of the black layer by the black layer process.
- the degree of the rough surface is 10-point average roughness Rz FIS—B0601 compliant (1994 version)], and is preferably about 0.1 to 1 O / zm, more preferably 1. or less, and still more preferably 0. 5 to 1.5 m. If the roughness is less than this, the effect of roughening cannot be sufficiently obtained, and if the roughness is larger than this, bubbles are embraced or crushed when an adhesive or a resist is applied.
- the electromagnetic wave shielding performance of the conductor layer 11 is determined according to the purpose and application.
- the electromagnetic wave shielding property is determined by the material, thickness, diameter and width (opening ratio) of the conductor layer 11, and therefore, these specifications are adjusted and designed so as to meet the required shielding ratio.
- an electromagnetic wave attenuation rate of 30 dB or more is required in the frequency band of 30 MHz to 1 GHz.
- the blackening layer 12 provided on the outer surface of the conductor layer 11 is originally intended to improve the contrast of the image in the bright room of the display and is a layer exhibiting a dark color such as black.
- a known blackening layer can be appropriately employed.
- inorganic materials such as metals and organic materials such as black colored resin can be used.
- metals, alloys, metal oxides, metal compounds of metal sulfides, etc. It is formed as a metal-based layer.
- various conventionally known black spot treatment methods can be appropriately employed.
- the blackening process by a plating method is preferable in terms of adhesion, uniformity, ease, etc.
- the material include copper, cobalt, A metal such as nickel, zinc, molybdenum, tin, or chromium, or a metal compound is used.
- a preferred plating method for black plating treatment for forming the black plating layer 12 is to use a copper conductive layer as sulfuric acid, copper sulfate.
- a cathodic electrodeposition method in which cathodic electrolysis is performed in an electrolytic solution that is equivalent to cobalt sulfate to attach cationic particles.
- the rough surface can be obtained simultaneously with the black color by the adhesion of the cationic particles.
- Copper particles and copper alloy particles can be used as the cationic particles.
- the copper alloy particles are preferably copper-cobalt alloy particles, and the average particle size is preferably 0.1 to 1 ⁇ m.
- the copper-cobalt alloy particles provide a black soot layer with a copper-cobalt alloy particle layer force.
- the cathodic electrodeposition method is also preferable in that the average particle size of the cationic particles to be adhered can be adjusted to 0.1 to 1 m. If the average particle diameter exceeds the above range, the density of the attached particles will decrease, resulting in a decrease in blackness and unevenness, and particle dropout (powders) will easily occur. On the other hand, even if the average particle diameter is less than the above range, the blackness is lowered.
- the treatment surface is made cathodic by treatment at a high current density, activated by reducing hydrogen generation, and the adhesion between the copper surface and the cationic particles is remarkably improved. .
- black chrome, black nickel, nickel alloy, etc. are also preferred as the black glazing layer 12.
- the nickel alloy include nickel-zinc alloy, nickel-tin alloy, and nickel-tin-copper alloy.
- the nickel alloy has good blackness and conductivity, and can also provide a blackening layer 12 with a protective function.
- the black glazing layer 12 particles are needle-like, so it is easily deformed by an external force and its appearance changes easily. There is also an advantage that the appearance hardly changes.
- the black alloy layer may be formed from a nickel alloy by forming a nickel alloy after nickel plating is performed by a known electrolytic or electroless plating method.
- the mesh portion 2 in the electromagnetic wave shielding material 1 is formed by opening an opening of a desired shape in the metal foil or metal layer constituting the conductor layer 11 by a photoetching method. That is, the electromagnetic wave shielding material 1 shown in FIG. 2 is formed by opening an opening by etching the metal foil.
- a metal foil having an opening is adhered to the transparent base material 14 via the transparent adhesive layer 13, or the transparent adhesive layer is attached to the transparent base material 14.
- Through 13 It is formed by patterning the stacked metal layers with an etching force and opening an opening.
- the translucent pattern portion 4 is formed by opening an opening 4a in a desired pattern at a predetermined position in a region facing the outer edge portion 5c of the image light emitting portion 5a of the image display element in the frame portion 3. is there.
- a method for forming an opening in a desired pattern in the frame portion 3 of the electromagnetic shielding material for example, when forming the opening of the mesh portion 2 in the conductor layer 11 by a photoetching method, the mesh portion 2 A pattern with a predetermined pattern (negative or positive) is formed at a predetermined position on the mask where the pattern is exposed to the photosensitive resist, and at the same time when the mesh portion 2 is drilled, the translucent pattern portion 4 There is a method of drilling the pattern together. Alternatively, there is a method of punching the pattern of the translucent pattern portion 4 in the frame portion 3 by punching the pressing force. Desired patterns include product names, manufacturer names, design designs, and the like.
- the transparent substrate 14 is a layer for reinforcing the conductor layer 11 having a low mechanical strength, and the conductor layer itself is a single layer and has sufficient strength and shape retention.
- the electromagnetic wave shielding material 1 is constituted by a single layer of the conductor layer 11 formed with the mesh part 2 and the frame part 3.
- the transparent base material 14 as long as it has optical transparency as well as mechanical strength, it is necessary to select and use one according to the application, taking into account heat resistance, insulation, etc. as appropriate. Good. Specific examples include a resin board, a resin sheet (or film, the same applies hereinafter), a glass plate, and the like.
- Examples of the transparent resin used for the resin board, the resin sheet, and the like include polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, terephthalenolic acid, isophthalic acid, ethylene glycol copolymer, and terephthalic acid.
- Polyester resin such as ethylene glycol copolymer, Polyamide resin such as nylon 6, Polyolefin resin such as polypropylene and polymethylpentene, Acrylic resin such as polymethyl methacrylate, Polystyrene, Styrene monoacrylonitrile Examples thereof include styrene-based resins such as copolymers, cellulose-based resins such as triacetyl cellulose, imide-based resins, and polycarbonate resins. These resins are used as single or plural kinds of mixed resins (including polymer alloy) as a resin material, and in layers, Used as a single layer or a laminate of two or more layers.
- a uniaxially stretched or biaxially stretched sheet is more preferable in terms of mechanical strength.
- additives such as an ultraviolet absorber, a filler, a plasticizer, and an antistatic agent may be appropriately added as necessary.
- the glass used for the glass plate there are quartz glass, borosilicate glass, soda lime glass, and the like, and more preferably, the coefficient of thermal expansion, dimensional stability, and workability in high-temperature heat treatment.
- An excellent example is non-alkali glass that does not contain an alkali component in the glass, and can also be used as an electrode substrate as a front substrate of an image display element.
- the thickness of the transparent substrate 14 is not particularly limited as long as it depends on the application.
- the force is usually about 12 to: LOOO ⁇ m, preferably 50 to 700 ⁇ m, more preferably 100 to 500 / ⁇ ⁇ force S.
- the thickness is less than the above, the mechanical strength is insufficient and warping, sagging, breakage, etc. occur, and if the thickness exceeds the above, the excess performance increases the cost and the thinning is difficult. Become.
- the transparent base material 14 a sheet (or film), a plate, or the like such as these inorganic materials and organic materials can be applied, and the transparent base material 14 includes a front substrate, a back substrate, and the like.
- the front substrate which is a component of the main body of the image display device consisting of the above, may be used as a front substrate, but in the form of using an electromagnetic shielding material as a front filter placed in front of the front substrate, it is thinner and lighter than the plate Needless to say, the resin sheet is superior to the glass plate in that the sheet is superior and does not break!
- a resin sheet is preferred as the transparent base material 14 and is a material.
- a polyester-based resin sheet such as polyethylene terephthalate and polyethylene naphthalate.
- a cellulose-based resin sheet is preferable in terms of transparency, heat resistance, cost, and the like, and a polyethylene terephthalate sheet is more preferable.
- the transparent substrate has a light-transmitting property with a visible light transmittance of 80% or more.
- a transparent base material such as a resin sheet has a corona discharge treatment, plasma treatment, ozone treatment, flame treatment, primer treatment, pre-heat treatment, dust removal treatment, vapor deposition treatment, alkali treatment, etc.
- the known easy adhesion treatment may be performed.
- the transparent adhesive layer 13 is for adhesively fixing the conductor layer 11 to the transparent base material 14.
- the adhesive visible from the opening of the conductor layer 11 is light transmissive. It is necessary to use a transparent material that does not damage the surface.
- a metal foil is laminated on a transparent base material and the opening is opened by force and etching force, the adhesive is exposed in the entire area of the mesh portion, so the transparency of the adhesive is required.
- the method for laminating the metal foil and the transparent substrate is not particularly limited, and a known method is appropriately employed. However, when a typical resin sheet is used as the transparent substrate, a dry lamination method is used. It is common.
- the transparent adhesive used for the transparent adhesive layer 13 is not particularly limited and may be appropriately selected from known adhesives. Examples thereof include urethane adhesives, acrylic adhesives, epoxy adhesives, rubber adhesives, etc. Among them, urethane adhesives are preferable in terms of adhesive strength and the like.
- the urethane-based adhesive there is a two-component curable urethane-resin-based adhesive. This adhesive includes various hydroxyl group-containing compounds such as polyether polyol, polyester polyol, and acrylic polyol, and a triglyceride. It is an adhesive that uses a two-component hardened urethane resin containing various polyisocyanate compounds such as range isocyanate and hexamethylene diisocyanate.
- the transparent adhesive layer 13 is prepared by applying a transparent adhesive to a metal foil (before opening) or a transparent substrate by a known coating method. It is formed by stacking. Examples of the coating method include coating methods such as roll coating, comma coating, and gravure coating, and printing methods such as screen printing and gravure printing.
- the thickness of the transparent adhesive layer (when dried) is not particularly limited, but is usually 0.1 to 20; ⁇ ⁇ , and more preferably 1 to 10 m in terms of adhesive strength, cost, and workability. .
- a layer that expresses various functions is laminated as shown in Fig. 4, or a process that expresses various functions is performed. To do. Examples of the layer that exhibits various functions include the following.
- the electromagnetic wave shielding layer 1 may be composed of only the conductive layer 11 and the black color layer 12.
- the conductive layer made of metal may be deteriorated during manufacturing and handling, resulting in deterioration of electromagnetic wave shielding performance. Therefore, when it is necessary to prevent wrinkles, the surface of the conductor layer 11 may be covered with the fender layer 21.
- the black layer is easy to wear, it is preferable to cover the black layer 12 as well. Covering may be performed on one or more necessary surfaces of the front surface, back surface, and side surfaces of the conductor layer.
- the protective layer 21 is not particularly limited as long as it is less rusting than the conductive layer 11 to be formed, such as an inorganic material such as metal, an organic material such as resin, or a combination thereof.
- the black layer 12 is also covered with the protective layer 21 to prevent the particles of the black layer 12 from falling off or being deformed, thereby increasing the blackness of the black layer.
- the conductive layer 11 is formed of a metal foil
- the blackened layer may be removed. In order to prevent alteration, it is preferably provided before lamination of the transparent substrate and the metal foil.
- a conventionally known layer may be used as appropriate, for example, a metal or alloy such as chromium, zinc, nickel, tin, copper, or a layer of metal oxide or metal compound. and so on . These can be formed by a known plating method or the like.
- a chromium compound layer obtained by chromate treatment after zinc plating can be mentioned.
- This anti-corrosion layer made of a chromium compound is excellent in adhesion to a blackening layer composed of a copper-cobalt alloy particle layer and a transparent adhesive layer (especially a two-component curable urethane-based adhesive).
- chromium it may be treated with chromate (chromate)!
- the chromate treatment is performed by bringing the chromate treatment solution into contact with the treated surface.
- This contact may be performed by any other coating method such as roll coating, curtain coating, squeeze coating, and the scouring method (hereinafter referred to as single-sided contact).
- the electrostatic atomization method, dipping method, etc. double-sided contact is possible.
- After contact it may be dried without washing.
- An aqueous solution containing chromic acid is usually used as the chromate treatment solution.
- treatment liquids such as “Alsurf (registered trademark) 1000” (manufactured by Nippon Paint Co., Ltd.), ⁇ -284 ”(manufactured by Nippon Parkerizing Co., Ltd.) and the like can be used.
- the chromate treatment is preferable from the viewpoint of adhesion to zinc and the anti-mold effect before the treatment.
- a key compound such as a silane coupling agent may be contained in order to improve acid resistance during etching or acid cleaning.
- the thickness of the fender layer is usually about 0.001 to 10 m, preferably 0.01 to 1 ⁇ m.
- the transparent resin layer 22 As the transparent resin used for this purpose, a resin whose refractive index is close to that of the transparent adhesive layer 13 in contact with the resin is specifically preferred, and specifically, a resin whose difference in refractive index is within 0.14. . By doing so, the rough surface of the interface between the transparent adhesive layer and the transparent resin is optically disappeared and integrated.
- the transparent adhesive layer is urethane-based resin, urethane resin, acrylic resin, etc. are used as the transparent resin.
- the near-infrared shielding layer 24 When near-infrared rays are radiated from the image display element, the near-infrared rays have a wavelength overlapping with that of the infrared rays for operating the remote control device, which may cause malfunction in remote operation.
- the near-infrared shielding layer 24 is preferably laminated.
- the near-infrared shielding layer 24 absorbs in the near-infrared region such as di-in-molybdenum compounds, cyanine compounds, and phthalocyanine compounds in polyester resins, urethane resins, acrylic resins, and other resins. This is formed by applying a compound to which a compatible compound is added, or by applying it or forming a film in advance and laminating with an adhesive.
- unnecessary light that interferes with good natural color reproduction may be mixed in visible light emitted from the image display device.
- neon atoms having a wavelength of 570 to 605 nm correspond to this.
- a resin added with a pigment that absorbs and removes the unnecessary light is applied and applied, or a film is formed in advance and laminated with an adhesive. It is preferable to form a color tone adjusting layer 23 formed by the above process.
- the color tone adjusting layer may be provided as an independent layer. It is also possible to combine the color tone adjusting layer with another layer by adding the dye to the other layer. In the form of FIG. 4, the layer 23 is formed by combining the adhesive layer and the color tone adjusting layer.
- the ultraviolet absorbing layer 26 Prevents deterioration (discoloration, discoloration, strength reduction, etc.) of the constituent layers of the electromagnetic wave shielding material or the constituent elements of the image display device due to ultraviolet rays contained in the sunlight incident on the image display device from the outside.
- the ultraviolet absorbing layer a polyester resin, urethane resin, acrylic resin, or other resin added with an ultraviolet absorber such as a benzotriazole compound or a benzophenone compound is applied and applied. Or formed in advance and laminated with an adhesive.
- the ultraviolet absorbing layer may be provided as an independent layer, but it can also be used as another layer by adding an ultraviolet absorber to the other layer.
- the layer 26 is formed by integrating the antireflection layer and the ultraviolet absorption layer.
- an antireflection layer or an antiglare layer 26 is formed on the outermost surface of the electromagnetic wave shielding material.
- the antireflection layer 26 generally has a multilayer structure in which, for example, a low refractive index layer and a high refractive index layer are alternately laminated, and the outermost layer is a low refractive index layer. It can be formed by a dry method such as sputtering or using a wet method such as coating.
- the low refractive index layer is made of silicate, magnesium fluoride, fluorine-containing resin
- the high refractive index layer is made of titanium oxide, zinc sulfide, acid zirconium, acid niobium, etc. Is used.
- the antiglare layer 26 is formed on the surface of the layer by forming a coating film in which an inorganic filler such as silica is added to a resin binder, or by forming using a shaping sheet or a shaping plate. It can be formed as a layer provided with fine irregularities that radiate and reflect.
- curable acrylic resin can be used as ionizing radiation because surface strength is desired as the surface layer.
- a curable resin is preferably used.
- the electromagnetic wave shielding material having the cross-sectional configuration shown in FIG. 4 is added to the surface of the electromagnetic wave shielding material having the configuration shown in FIG. 3 in order, and a color tone adjusting agent is added to the adhesive layer 21 and the transparent resin layer 22.
- An anti-reflection layer formed by laminating an adhesive layer / color tone adjusting layer 23 and a near-infrared shielding layer 24, and forming a low refractive index layer on a transparent film containing an ultraviolet absorber via an adhesive layer 25.
- This is an example of an electromagnetic shielding material that has a composite filter function by laminating a layer and ultraviolet absorption layer 26
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112005001933T DE112005001933T5 (de) | 2004-08-31 | 2005-08-29 | Material zur Abschirmung elektromagnetischer Wellen und Anzeige, bei der dieses eingesetzt wird |
US11/632,040 US7859179B2 (en) | 2004-08-31 | 2005-08-29 | Electromagnetic wave shielding material and display using the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004251217A JP4386273B2 (ja) | 2004-08-31 | 2004-08-31 | 画像表示装置 |
JP2004-251217 | 2004-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006025314A1 true WO2006025314A1 (ja) | 2006-03-09 |
Family
ID=35999968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/015645 WO2006025314A1 (ja) | 2004-08-31 | 2005-08-29 | 電磁波遮蔽材及びそれを用いた画像表示装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7859179B2 (ja) |
JP (1) | JP4386273B2 (ja) |
KR (1) | KR20070057894A (ja) |
DE (1) | DE112005001933T5 (ja) |
TW (1) | TW200624036A (ja) |
WO (1) | WO2006025314A1 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008218195A (ja) * | 2007-03-05 | 2008-09-18 | Canon Inc | 電子源、画像表示装置及び情報表示再生装置 |
KR100965376B1 (ko) * | 2007-08-24 | 2010-06-22 | 삼성코닝정밀소재 주식회사 | 디스플레이 장치용 전자파 차폐 부재 |
US8329304B2 (en) * | 2008-05-27 | 2012-12-11 | Guardian Industries Corp. | Plasma display panel including TCC EMI filter, and/or method of making the same |
KR101579309B1 (ko) | 2009-03-31 | 2016-01-04 | 엘지전자 주식회사 | 디스플레이 장치 |
CN102388333A (zh) | 2009-04-09 | 2012-03-21 | Lg电子株式会社 | 显示装置 |
KR20100112409A (ko) | 2009-04-09 | 2010-10-19 | 엘지전자 주식회사 | 디스플레이 장치 |
CN102695360A (zh) * | 2011-03-22 | 2012-09-26 | 鸿富锦精密工业(深圳)有限公司 | 电路板及其制造方法 |
US9164630B2 (en) * | 2012-09-26 | 2015-10-20 | Eastman Kodak Company | Display apparatus with pixel-aligned ground mesh |
KR20140041138A (ko) * | 2012-09-27 | 2014-04-04 | 엘지이노텍 주식회사 | 전극 부재 및 이의 제조방법 |
TWI462662B (zh) * | 2013-02-06 | 2014-11-21 | Nanya Plastics Corp | 複合式雙面黑色銅箔及其製造方法 |
CN103837917B (zh) * | 2014-02-24 | 2016-03-16 | 京东方科技集团股份有限公司 | 一种狭缝光栅、其制作方法、光栅结构及显示装置 |
KR102644111B1 (ko) * | 2018-07-12 | 2024-03-07 | 엘지이노텍 주식회사 | 광 경로 제어 부재 및 이를 포함하는 표시 장치 |
WO2020013533A1 (ko) * | 2018-07-12 | 2020-01-16 | 엘지이노텍 주식회사 | 광 경로 제어 부재 및 이를 포함하는 표시 장치 |
CN113973487A (zh) * | 2020-07-24 | 2022-01-25 | 广州方邦电子股份有限公司 | 一种屏蔽膜及线路板 |
CN113795132B (zh) * | 2021-08-13 | 2024-04-05 | 深圳市志凌伟业光电有限公司 | 电磁屏蔽构件和显示器 |
Citations (3)
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JP2001343898A (ja) * | 2000-06-02 | 2001-12-14 | Sanyo Electric Co Ltd | プラズマディスプレイ装置 |
WO2004016058A1 (ja) * | 2002-08-08 | 2004-02-19 | Dai Nippon Printing Co., Ltd. | 電磁波遮蔽用シート |
JP2004241761A (ja) * | 2003-01-16 | 2004-08-26 | Dainippon Printing Co Ltd | 電磁波遮蔽用シート、及びその製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS61134189A (ja) | 1984-12-04 | 1986-06-21 | Dainippon Printing Co Ltd | 電磁波シ−ルド用フイルタ− |
TW446637B (en) * | 1996-05-28 | 2001-07-21 | Mitsui Chemicals Inc | Transparent laminates and optical filters for displays using the same |
JP3480898B2 (ja) | 1998-02-12 | 2003-12-22 | 日立化成工業株式会社 | ディスプレイ用電磁波シールド性フィルム及びディスプレイ用電磁波遮蔽構成体とディスプレイ |
JP3734683B2 (ja) | 2000-06-23 | 2006-01-11 | 共同印刷株式会社 | シールド材、シールド材の製造方法及び該シールド材を備えたプラズマディスプレイ装置 |
KR100751932B1 (ko) * | 2003-04-01 | 2007-08-27 | 엘지전자 주식회사 | 전면 필터와 그의 제조 방법 |
-
2004
- 2004-08-31 JP JP2004251217A patent/JP4386273B2/ja not_active Expired - Fee Related
-
2005
- 2005-08-29 KR KR1020077007333A patent/KR20070057894A/ko not_active Application Discontinuation
- 2005-08-29 DE DE112005001933T patent/DE112005001933T5/de not_active Withdrawn
- 2005-08-29 WO PCT/JP2005/015645 patent/WO2006025314A1/ja active Application Filing
- 2005-08-29 US US11/632,040 patent/US7859179B2/en not_active Expired - Fee Related
- 2005-08-30 TW TW094129770A patent/TW200624036A/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001343898A (ja) * | 2000-06-02 | 2001-12-14 | Sanyo Electric Co Ltd | プラズマディスプレイ装置 |
WO2004016058A1 (ja) * | 2002-08-08 | 2004-02-19 | Dai Nippon Printing Co., Ltd. | 電磁波遮蔽用シート |
JP2004241761A (ja) * | 2003-01-16 | 2004-08-26 | Dainippon Printing Co Ltd | 電磁波遮蔽用シート、及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
TW200624036A (en) | 2006-07-01 |
US20070188066A1 (en) | 2007-08-16 |
US7859179B2 (en) | 2010-12-28 |
DE112005001933T5 (de) | 2007-07-26 |
KR20070057894A (ko) | 2007-06-07 |
TWI365707B (ja) | 2012-06-01 |
JP4386273B2 (ja) | 2009-12-16 |
JP2006073545A (ja) | 2006-03-16 |
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