Display body and article

Abstract

To provide a display body and an article with higher visual effect.SOLUTION: A display body according to an embodiment comprises a base protective layer and a coating layer laminated on the base protective layer, and a light transmission layer laminated on the coating layer, and the coating layer has a plurality of planar regions, and at least one of the plurality of planar regions has a different light transmission rate from that of the other planar regions.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a display medium and an article having an anti-counterfeiting effect and a decorative effect. [Background technology]

[0002] Known conventional anti-counterfeiting technologies include a technique in which a display material is affixed to part of the main surface of an article on which characters or designs are displayed, and the display material has visual effects such as micro characters, special luminescent ink, watermarks, holograms, and diffraction gratings.

[0003] Technologies using holograms and diffraction gratings cannot be easily imitated, and therefore have been used in the past as means for preventing counterfeiting. For example, a technology is known as a means for preventing counterfeiting, in which information is displayed by a hologram or diffraction grating on a display attached to securities, credit cards, passports, licenses, identification cards, and banknotes, thereby providing an anti-counterfeiting effect (Patent Document 1).

[0004] In addition, because of their high decorative effect, technologies using holograms and diffraction gratings have been used in designs to enhance decorative effects. For example, there is known a technology that uses holograms or diffraction gratings in part or all of the design of a trading card or the like to give the image a high visual effect. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2003-295744 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, with technological advances, improvements in the techniques for manufacturing diffraction gratings and holograms have made it easier to counterfeit holograms and diffraction gratings that have similar visual effects, and as a result, the anti-counterfeiting effectiveness of anti-counterfeiting measures using holograms or diffraction gratings has decreased.

[0007] Furthermore, as the manufacturing technology improves, holograms and diffraction gratings are now widely used in design, creating a demand for technology that can provide a higher level of design and differentiate designs from others.

[0008] As a result, there is a demand for technology that provides displays with high visual effects.

[0009] Therefore, an object of the present invention is to provide a display and an article that have a high visual effect. [Means for solving the problem]

[0010] In order to achieve the above object, the display body of the first embodiment is a display body comprising a base protective layer, a coating layer laminated on the base protective layer, and a light-transmitting layer laminated on the coating layer, wherein the coating layer has a plurality of planar regions, and at least one of the plurality of planar regions has a light transmittance different from that of the other planar regions.

[0011] The display of the second embodiment is the display of the first embodiment, in which a shading display is performed based on the difference in the amount of light transmitted through planar regions having different light transmittances.

[0012] The display of the third embodiment is the display of the first embodiment, in which the covering layer includes a plurality of pinholes, and the light transmittance of each of the plurality of planar regions is determined by the total area of ​​the pinholes included in each planar region.

[0013] The indicator of the fourth embodiment is the indicator of the third embodiment, in which the layer thickness of the base protective layer is determined for each corresponding planar region depending on the total area of ​​pinholes contained in the corresponding planar region.

[0014] The display member of the fifth embodiment is the display member of the fourth embodiment, in which at least one of figures, characters, and designs is formed on each portion of the base protective layer having the same layer thickness.

[0015] The display member of the sixth embodiment is the display member of the fourth embodiment, in which at least one of figures, characters, and designs is formed by combining portions of the base protective layer having different layer thicknesses.

[0016] The display material of the seventh aspect is the display material of the first aspect, in which the base protective layer is formed by mixing a plurality of materials.

[0017] The display material of the eighth embodiment is the display material of the seventh embodiment, in which at least one material among the plurality of materials and at least one other material form a sea-island structure.

[0018] The display body of the ninth embodiment is the display body of the eighth embodiment, in which the multiple materials include a vinyl chloride-vinyl acetate resin having adhesion to the coating layer and a polyamide-imide resin having heat resistance, and the vinyl chloride-vinyl acetate resin and the polyamide-imide resin form a sea-island structure.

[0019] The display medium of the tenth embodiment is the display medium of the first embodiment, in which the thickness of the base protective layer is 0.1 μm or more and 3.0 μm or less.

[0020] An article according to an eleventh aspect is an article having the display body according to the first aspect disposed thereon.

[0021] The article of a twelfth embodiment is the article of the eleventh embodiment, further comprising an adhesive layer for adhering the display body to the article. Effect of the Invention

[0022] According to the present invention, it is possible to provide a display and an article having a high visual effect. [Brief description of the drawings]

[0023] [Figure 1]FIG. 1 is a plan view showing an example of a display according to the present embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II in FIG. [Diagram 3] FIG. 3 is a partially enlarged plan view of each region of the coating layer. [Figure 4] FIG. 4 is an example of a partial cross-sectional side view of a display body for explaining the preparation of each region of the coating layer. [Diagram 5] FIG. 5 is a microscope image of the surface coated with the undercoat protective layer. [Figure 6] FIG. 6 is a diagram showing a schematic cross-sectional structure taken along line II-II in FIG. [Figure 7] FIG. 7 is a conceptual diagram showing the permeability of an etching solution through an underlevel protection layer having a sea-island structure. [Figure 8] FIG. 8 is a conceptual diagram showing the permeability of an aqueous etching solution in an underlevel protection layer that does not have a sea-island structure. [Figure 9] FIG. 9 is a conceptual diagram showing the behavior of transmitted light in the display according to this embodiment. [Figure 10] FIG. 10 is a plan view showing an example of an article according to this embodiment. [Figure 11] FIG. 11 is a cross-sectional view taken along line III-III in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, each embodiment of the present invention will be described with reference to the drawings. The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the size ratio between parts, etc. are not necessarily the same as the actual ones. Even when the same part is shown, the dimensions and ratios of each part may be different depending on the drawing. In this specification and each drawing, elements similar to those described above with respect to the previous drawings are given the same reference numerals, and detailed explanations and duplicated explanations are omitted as appropriate.

[0025] (Display body) A display according to an embodiment of the present invention will be described with reference to the drawings.

[0026] FIG. 1 is a plan view showing an example of a display according to the present embodiment.

[0027] FIG. 2 is a cross-sectional view taken along line II in FIG.

[0028] The display 10 is formed by laminating at least a light-transmitting layer 11, a covering layer 12, and a base protection layer 13 in this order.

[0029] 1, the layer thickness H1 corresponding to region a is 2.0 μm, the layer thickness H2 corresponding to region d is 0.5 μm, the layer thickness H3 corresponding to region c is 1.0 μm, and the layer thickness H4 corresponding to region b is 1.5 μm. These layer thickness values ​​are merely examples, and other values ​​may be used as long as the relationship H1>H4>H3>H2 is maintained.

[0030] The number of such regions can be two or more and six or less. If there are at least two types, a pattern can be formed, and in this case, manufacturing can be performed inexpensively. If there are four types, the base protection layer can be formed using a normal CMYK four-color printing device.

[0031] The thickness difference between the regions can be made the same, and in this case, the base protection layer of each region can be printed with the same ink under the same printing conditions when overprinting the base protection layer of each region using a printing device. In this way, the thickness can be made stepwise with discrete values ​​for each region, and this configuration is suitable for forming a base protection layer in multicolor printing.

[0032] In the example shown in FIG. 2, the side on which the light transmitting layer 11 is formed is referred to as the front side (viewer side), and the opposite side on which the base protective layer 13 is formed is referred to as the rear side.

[0033] The light transmitting layer 11 protects the covering layer 12 from surface stains and scratches, thereby maintaining the visual effect of the display 10 for a long period of time.

[0034] The light transmitting layer 11 may be made of, for example, a light-transmitting resin.

[0035] Examples of light-transmitting resins that can be used include thermoplastic resins such as polyethylene terephthalate, polyethylene naphthalate, polycarbonate, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, nitrocellulose, polyethylene, polypropylene, acrylic-styrene copolymers, vinyl chloride, and polymethyl methacrylate; thermosetting resins such as polyimide, polyamide, polyester urethane, acrylic urethane, epoxy urethane, silicone, epoxy, and melamine resins; and ultraviolet- or electron-beam-curable or electron-beam-curable oligomers such as various acrylic monomers, epoxy acrylates, urethane acrylates, and polyester acrylates; and reactive polymers such as acrylic, epoxy, and cellulose-based resins having acrylic or methacrylic groups.

[0036] In this embodiment, the light transmitting layer 11 is made of polypropylene, which is a light transmitting resin.

[0037] Although the light transmitting layer 11 is shown as one layer in FIG. 2, it may be configured as two or more layers in consideration of surface strength and the like.

[0038] A covering layer 12 is laminated on the light transmitting layer 11. The material of the covering layer 12 is formed of a metal. The metallic light covering layer 12 has a property of reflecting light from the light transmitting layer 11. This reflection is due to the difference in complex refractive index between the light transmitting layer 11 and the covering layer 12. The metal can be a pure metal or an alloy.

[0039] The coating layer 12 can be formed by a method such as vapor deposition of such a metal material on the light transmitting layer 11 in a vacuum. In consideration of the cost and the reflectance of the coating layer 12, a thin film of about 50 nm is generally suitable for the coating layer 12, and the specific range can be 30 nm or more and 80 nm or less. In this embodiment, aluminum is used as the material for the coating layer 12. If the thickness is 30 nm or more, the required reflectance can be easily obtained, and if the thickness is 80 nm or less, sufficient reflectance can be obtained at low cost.

[0040] The underlayer protection layer 13 has discrete layer thicknesses different from one another, such as H1, H2, H3, and H4 described above.

[0041] The base protection layer 13 may be made of a mixture of vinyl chloride acetate, which has high adhesion to the coating layer 12, and polyamideimide, which has a high glass transition temperature and provides the display 10 with heat resistance.

[0042] The base protective layer 13 can be formed by gravure printing, etc. In forming the base protective layer 13, in order to control a plurality of different discontinuous thicknesses, adjustment of the groove depth of the gravure plate, printing multiple times, etc. are adopted.

[0043] At least one of figures, letters, and designs can be formed on each part of the base protective layer 13 having the same layer thickness. At least one of figures, letters, and designs can be formed by combining parts of the base protective layer 13 having different layer thicknesses. The figures can be coats of arms, emblems, badges, and painted patterns. The letters can be micro letters. The designs can be portraits, heritage, landmarks, fish, arthropods, mammals, reptiles, and amphibians.

[0044] Next, the structure of the covering layer 12 will be described in detail.

[0045] FIG. 3 is a partially enlarged plan view of each region of the coating layer.

[0046] As shown in Fig. 1, the display 10 has regions a, b, c, and d. In the plan view of the coating layer 12 shown in Fig. 3, Fig. 3(a) corresponds to the coating layer 12 in region a, Fig. 3(b) corresponds to the coating layer 12 in region b, Fig. 3(c) corresponds to the coating layer 12 in region c, and Fig. 3(d) corresponds to the coating layer 12 in region d.

[0047] As described above, in this embodiment, the coating layer 12 is made of aluminum. The black parts in FIG. 3(a) represent aluminum 20A. Thus, the entire surface of the coating layer 12 in region a is made of aluminum 20A. However, in regions b, c, and d, the entire surface of the coating layer 12 is not made of aluminum 20A, and pinholes 20B, indicated by white circles in the figure, are partially present. The proportion of pinholes 20B per unit area of ​​the coating layer 12 increases in the order of region a → region b → region c → region d.

[0048] Thus, the area ratio of pinholes 20B per unit area of ​​coating layer 12 increases in the order of region a → region b → region c → region d. Since pinholes 20B transmit light, the larger the area ratio of pinholes 20B, the higher the light transmittance and, conversely, the lower the light reflectance. In this way, it is possible to control the light reflectance and transmittance by the area ratio of pinholes 20B. In general, the larger the area ratio of pinholes 20B, the greater the number of pinholes per unit area. This unit area can be 1 square millimeter.

[0049] A method for producing each region of the coating layer 12 will now be described.

[0050] FIG. 4 is an example of a partial cross-sectional side view of a display body for explaining the preparation of each region of the coating layer.

[0051] As shown in FIG. 4, first, a light transmitting layer 11, a covering layer 12, and an undercoat protective layer 13 having a different thickness are laminated in this order on a substrate 50 to form a laminate 30.

[0052] When this laminate 30 is immersed in an aqueous etching solution E, it takes time for the aqueous etching solution E to penetrate and reach the coating layer 12 in the region a where the base protective layer 13 is thick, and therefore etching of the coating layer 12 does not progress easily.

[0053] On the other hand, in the region d where the base protective layer 13 is thin, the etching solution E penetrates and reaches the coating layer 12 in a short time, so that etching of the coating layer 12 progresses.

[0054] However, a coating (passive coating) is formed on the surface of the aluminum actually used for the coating layer 12 by air oxidation. Because the corrosion rate of this passive coating is slower than that of pure aluminum, the passive coating state (thickness variation) is not completely uniform during the corrosion process, and etching progresses locally in areas where the passive coating state is thin and weak. In other words, as shown in Figures 3(b) to (d), a pattern is obtained in which parts 20A where the material of the coating layer 12 (aluminum) is present and pinholes 20B where the material of the coating layer 12 is missing are mixed.

[0055] Furthermore, the portions 20A where the material of the coating layer 12 is present and the pinholes 20B are formed randomly. For the sake of explanation, the pinholes 20B, which are the portions where the material of the coating layer 12 is missing, are shown enlarged in FIG. 3, but the actual pinholes 20B have vertical and horizontal sizes of about several μm to several tens of μm. Furthermore, the shape of the pinholes 20B is often circular. There are also elliptical and amorphous pinholes. The shape of the pinholes 20B varies widely depending on the etching rate and the state of the coating layer 12.

[0056] The etching rate depends on the properties of the etching solution, etching temperature, etching time, flow rate, etc. The properties of the solution depend on the acidity or alkalinity of the surface. The condition of the coating layer depends on the resistance of the etching solution and the thickness of the coating layer. The resistance of the etching solution depends on the repelling ability of the etching solution at the surface of the coating layer and the permeability of the solution. The permeability of the solution depends on the molecular weight, degree of cross-linking, and functional groups of the coating film.

[0057] The layer thickness of the base protection layer 13 is in the range of 0.1 to less than 3.0 μm. If the layer thickness is less than 0.1 μm, it becomes difficult to control. Also, if it is 3.0 μm or more, the etching proceeds slowly and is not suitable for productivity. Also, when the display body 10 is used as a transfer foil, if the layer thickness of the base protection layer 13 is 3.0 μm or more, the layer thickness of the transfer foil becomes thick, which is not preferable.

[0058] A sodium hydroxide solution can be used as the etching aqueous solution E. In this embodiment, a sodium hydroxide solution with a concentration of 1.0% is used as the etching aqueous solution E. Etching is performed with the temperature of the etching aqueous solution E set to 50 degrees and the etching time set to 30 seconds. The etching aqueous solution E may contain an additive. However, these conditions can be adjusted according to the layer thickness of the undercoat protective layer 13, the flow rate of the etching aqueous solution E, and the like. The concentration of the sodium hydroxide solution can be 0.5% or more and 2.0% or less. The temperature of the etching aqueous solution E can be 30 degrees or more and 70 degrees or less. The etching time can be 15 seconds or more and 1 minute or less.

[0059] As described above, the constituent material of the base protection layer 13 is a mixture of vinyl chloride acetate, which has high adhesion to the covering layer 12, and polyamideimide, which has a high glass transition temperature, in order to impart heat resistance to the display body 10. However, the constituent material of the base protection layer 13 is not limited to a mixture of two materials, and may be a mixture of three or more materials.

[0060] FIG. 5 is a microscope image of the surface coated with the undercoat protective layer.

[0061] FIG. 6 is a diagram showing a schematic cross-sectional structure taken along line II-II in FIG.

[0062] 5 and 6, 61 denotes vinyl chloride acetate, and 62 denotes polyamideimide. In the base protective layer 13, the polyamideimide 62 is not dissolved in the vinyl chloride acetate 61, but is separated from the vinyl chloride acetate 61 and exists so as to form a sea-island structure.

[0063] FIG. 7 is a conceptual diagram showing the permeability of an etching solution through an underlevel protection layer having a sea-island structure.

[0064] As shown in Fig. 7, in a structure having an island-in-a-sea structure, gaps are generated between the materials, i.e., between the vinyl chloride acetate 61 and the polyamide-imide 62. Therefore, the etching solution E can easily pass through the base protective layer 13 through these gaps, and it becomes easy to fabricate the coating structure as shown in Figs. 3(b) to (d). In addition, the island-in-a-sea structure makes it easy to detect counterfeits from the rear side (the base protective layer 13 side). Also, counterfeits can be detected from the front side (the light transmitting layer 11 side) by observing the part without the coating layer 12.

[0065] FIG. 8 is a conceptual diagram showing the permeability of an etching solution in an underlevel protection layer that does not have a sea-island structure.

[0066] 8, if polyamide-imide 62 were dissolved in vinyl chloride acetate 61, the sea-island structure would disappear, although this is not actually the case. In such a case, there would be no gaps between the materials, making it difficult for the etching solution E to pass through.

[0067] Next, the behavior of light when it is incident on the display 10 will be described.

[0068] FIG. 9 is a conceptual diagram showing the behavior of transmitted light in the display according to this embodiment.

[0069] In particular, Figure 9 shows a state in which a light source 302 is disposed on the rear side (undercoat protective layer 13 side) of the display body 10, and when incident light 304 emitted from the light source 302 is incident on the display body 10, an observer K observes transmitted light 305 transmitted from the front side (light transmitting layer 11 side).

[0070] As described with reference to Fig. 2, in the region a, the coating layer 12 is protected by the thick base protective layer 13, so that the coating layer 12 is not etched and no pinhole 20B exists, as shown in Fig. 3(a). Therefore, the incident light 304 is hardly able to pass through the coating layer 12 and is not able to transmit through the display 10. Therefore, the viewer K cannot recognize the transmitted light 305a in the region a.

[0071] 3(b), in region b, etching of coating layer 12 progresses, and pinholes 20B are formed, although only slightly, and the area ratio of the aluminum coating layer material per unit area becomes smaller than that in region a. Therefore, incident light 304 passes through pinhole 20B and is observed as transmitted light 305b.

[0072] 3(c), etching of the coating layer 12 progresses further in region c, and more pinholes 20B are present therein than in region b. Therefore, incident light 304 passes through pinholes 20B and is observed as transmitted light 305b that is more intense than in region b.

[0073] 3(d), etching of the coating layer 12 progresses further in region d, and more pinholes 20B are present therein than in region c. Therefore, incident light 304 passes through pinholes 20B and is observed as transmitted light 305b that is stronger than that in region c.

[0074] Thus, the intensity of transmitted light 305 in regions a, b, c, and d is in the following order: region a<region b<region c<region d. As a result, when regions a, b, c, and d are simultaneously observed through transmission, they appear to have different shading. This shading in transmission can be easily observed visually, especially under observation conditions where reflected light is suppressed.

[0075] So far, the behavior of transmitted light has been explained, but the same can be said about the observation of reflected light. That is, the reflectance when incident light 304 is incident from the front side is higher in the order of region a, region b, region c, and region d, based on the area of ​​the coating layer 12. That is, the intensity of reflected light in regions a, b, c, and d is in the order of region a>region b>region c>region d, which is the opposite of the intensity of transmitted light. As a result, when regions a, b, c, and d are observed simultaneously, light and dark are generated, and it appears that there is shading.

[0076] Thus, the display 10 has optical effects visible on both the front and rear sides.

[0077] Such an indicator 10 cannot be counterfeited using a copier, scanner, etc., because the optical properties of the reflection of the pinhole area ratio cannot be reproduced by a copier or read by a scanner. Therefore, by attaching such an indicator 10 to a printed matter as an anti-counterfeiting security feature, visual identification of authenticity can be easily and reliably performed, and the production of counterfeit products can be made even more difficult.

[0078] Furthermore, the location of pinholes that generally occur is random and varies from person to person. Therefore, by arranging the pinholes randomly, it is possible to use the location of the pinholes for individual authentication.

[0079] This individual identification can be performed by obtaining the pinhole position as a feature from image data captured by a camera, and identifying the pinhole based on the correlation between the feature and the feature that is registered in advance as a record in a data table on a server together with the corresponding individual's identifier. In other words, both visual identification and machine identification are possible with one medium. It is also possible to select the pinhole part suitable for individual authentication among the coating layers 12 of different thicknesses.

[0080] (Goods) An article according to an embodiment of the present invention will be described with reference to the drawings. The article can be a printed matter.

[0081] FIG. 10 is a plan view showing an example of an article according to this embodiment.

[0082] FIG. 11 is a cross-sectional view taken along line III-III in FIG.

[0083] The article refers to a banknote, a security, a passport, an ID card, etc., and the article 40 illustrated in Figs. 10 and 11 is an ID card.

[0084] The display body 10 is attached to the article 40. The display body 10 has already been described, so the same elements as those described above with reference to the previous figures are given the same reference numerals, and detailed and duplicated descriptions will be omitted as appropriate.

[0085] 10, the display 10 has a rectangular shape. However, the shape of the display 10 attached to the article 40 is not limited to a rectangular shape, and the display 10 can be attached in various shapes and forms, such as a circular or elliptical shape, a strip-like shape that crosses the article 40, or a shape that completely covers the front surface of the article 40.

[0086] 10 and 11, the article 40 includes a sheet-like or flat substrate (information printing substrate) 50. The display body 10 is disposed on the substrate 50 by attaching a base protection layer 13 having a convex structure to the substrate 50 by heat pressure transfer with an adhesive layer 43. In addition, a printing layer 31 is formed by printing on the substrate 50 in the area where the display body 10 is not disposed. The display body 10 may be disposed on the printing layer 31.

[0087] The upper part of the light transmitting layer 11 of the display 10 is covered with a protective layer 47 .

[0088] The material of the substrate 50 may be, for example, paper, a plastic plate, a plastic film, etc. The shape of the substrate 50 may be a sheet or a plate.

[0089] When the article 40 is a credit card, ID card, or the like, a warp prevention layer for preventing warping of the substrate 50 and an ink adhesion layer for improving adhesion of printing ink may be appropriately provided. Furthermore, a separate magnetic film layer or the like may be provided on the substrate 50. Even when the substrate 50 is paper, layers having various functions may be provided as necessary.

[0090] On the printed layer 31, any picture, character, symbol, or other information can be printed depending on the application of the article 40.

[0091] The adhesive layer 43 may be formed in advance on the display body 10. Alternatively, the adhesive layer 43 may be formed on the printed layer 31 or the substrate 50 of the article 40.

[0092] The protective layer 47 is a layer for protecting the display 10 from scratches and dirt, and is not essential and may be omitted.

[0093] The display body 10 illustrated in Fig. 10 has a rectangular shape and includes two optical function bodies 60, 70. Note that the optical function bodies 60, 70 do not need to occupy the entire surface of the display body 10. Therefore, the display body 10 also has an area that does not have an optical function body.

[0094] The optical function body 60 is composed of the regions 36a and 36b, and the optical function body 70 is composed of the region 36d.

[0095] First, the regions 36a and 36b constituting the optical function body 60 will be described.

[0096] In the region 36a, a plurality of concave-convex structures are formed in the light transmitting layer 11. The height of the concave-convex structure is approximately 1 μm, which means that the distance from the bottom to the top of the concave-convex structure in the Z direction in FIG.

[0097] In the region 36a, the covering layer 12 is laminated adjacent to the light transmitting layer 11 having such an uneven structure. In the region 36a, the base protection layer 13 is laminated below the covering layer 12, but is not shown in FIG.

[0098] In region 36b, base protection layer 13 is formed so that its thickness decreases in the direction X in the drawing. As the thickness decreases, the area of ​​coating layer 12 provided in region 36b also decreases.

[0099] Next, the region 36d that constitutes the optical function body 70 will be described.

[0100] Although not shown, a plurality of fine projections and recesses are formed in the region 36d. The height of the projections is about 300 nm.

[0101] Finally, the region 36c not belonging to the optical function bodies 60 and 70 will be described.

[0102] The covering layer 12 is not provided in the region 36c. Therefore, it is possible to observe the surface of the substrate 50 through the light transmitting layer 11. Therefore, when the region 36c is disposed on the printing layer 31, the observer can visually recognize the printing layer 31 through the light transmitting layer 11.

[0103] Next, the behavior of light when it enters the display 10 from the protective layer 47 side (hereinafter referred to as the "front side") will be described.

[0104] When light is incident on the region 36a from the front side, the incident light is diffracted by the uneven structure, i.e., it is observed in rainbow colors.

[0105] Furthermore, when light is incident on region 36b from the front side, the reflectance decreases as it progresses in the X direction in Figures 10 and 11. In other words, it appears darker as it progresses in the direction of the arrow in Figure 10, and a grayscale image with a gradation effect can be expressed.

[0106] Furthermore, when light is incident on the area 36d from the front side, the light is not reflected and the area is recognized as black.

[0107] In this embodiment, an example is shown in which the display body 10 has two optical functional bodies 60, 70, but the number of optical functional bodies provided in the display body 10 is not limited to two and may be three or more.

[0108] An article 40 to which such a display 10 is attached is difficult to counterfeit due to the shading caused by changes in reflectance of the display 10.

[0109] In addition, the arrangement and shape of the pinholes in coating layer 12 in area 36b can be formed uniquely for each product so that they are not the same for each product. By utilizing this uniqueness for individual authentication, it is possible to further improve resistance to counterfeiting.

[0110] Furthermore, although not described in this embodiment, it is possible to combine the uneven structure with the shading effect of the covering layer 12, and this combination can further improve the resistance to counterfeiting.

[0111] Although the best mode for carrying out the present invention has been described above with reference to the attached drawings, the present invention is not limited to such a configuration. Within the scope of the technical idea of ​​the invention as defined in the claims, a person skilled in the art may conceive of various changes and modifications, and it is understood that such changes and modifications also belong to the technical scope of the present invention. [Explanation of symbols]

[0112] 10 Display body 11 Light transmission layer 12 Covering layer 13 Base protection layer 20A Coating material (aluminum) 20B Pinhole 30 Laminate 31 Printing layer 36a area 36b area 36c area 36d area 36d area 40 Goods 43 Adhesive layer 47 Protective layer 50 Base material 60 Optical functional body 61 Ingredients (Vinyl chloride and acetate) 62 Material (Polyamide-imide) 70 Optical functional body 302 Light source 304 Incident light 305 Transmitted light a,b,c,d area Etching solution H1, H2, H3, H4 layer thickness K Observer

Claims

1. A base protection layer; a coating layer laminated on the base protection layer; A display body comprising a light transmitting layer laminated on the covering layer, The coating layer has a plurality of planar regions, A display body, wherein at least one of the plurality of flat areas has a light transmittance different from that of the other flat areas.

2. 2. The display according to claim 1, wherein the shading is displayed by the difference in the amount of light transmitted through the planar areas having different light transmittances.

3. The coating layer includes a plurality of pinholes, 2. The display according to claim 1, wherein the light transmittance of each of the plurality of planar regions is determined by a total area of ​​pinholes contained in the planar region.

4. 4. The display according to claim 3, wherein the thickness of the base protection layer is determined for each corresponding planar region in accordance with the total area of ​​pinholes contained in the corresponding planar region.

5. 5. The display according to claim 4, wherein at least one of a figure, a character, and a design is formed on each of portions of said base protection layer having the same layer thickness.

6. 5. The display according to claim 4, wherein at least one of a figure, a character, and a design is formed by combining portions of the base protection layer having different layer thicknesses.

7. 2. The display according to claim 1, wherein the base protection layer is made of a mixture of a plurality of materials.

8. 8. The display according to claim 7, wherein at least one of the plurality of materials and at least one other material form a sea-island structure.

9. the plurality of materials include a vinyl chloride-vinyl acetate resin having adhesion to the coating layer and a polyamide-imide resin having heat resistance, 9. The display according to claim 8, wherein the vinyl chloride-vinyl acetate resin and the polyamide-imide resin form a sea-island structure.

10. 2. The display according to claim 1, wherein the thickness of the base protection layer is 0.1 [mu]m or more and 3.0 [mu]m or less.

11. An article comprising the display body according to claim 1 disposed thereon.

12. The article according to claim 11, further comprising an adhesive layer for adhering the indicia to the article.

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