JP5163036B2 - Display and labeled goods - Google Patents

Description

  The present invention relates to a display technology that provides, for example, an anti-counterfeit effect, a decorative effect, and / or an aesthetic effect.

  For preventing counterfeiting, for example, a display body in which a latent image is recorded or a display body that displays an image that causes a color change according to an observation angle or the like may be used. The latent image can be formed using, for example, a line moire. Moreover, the color change according to an observation angle etc. can be produced using a diffraction grating, the hologram described in patent document 1, etc., for example.

However, progress in counterfeiting technology is significant. Therefore, further progress is desired in anti-counterfeiting technology.
JP-A-10-123919

  An object of the present invention is to make it possible to achieve an excellent anti-counterfeit effect.

  According to the first aspect of the present invention, a plurality of unit display portions that are regularly arranged and each include a display pattern, and a plurality of lenses that are regularly arranged, are opposed to the plurality of unit display portions. A plurality of unit display units, a plurality of first unit display units in which the display pattern displays a first image, and a second image in which the display pattern is different from the first image. One or more second unit display units for displaying the plurality of unit display units, and the display patterns of the plurality of unit display units and the plurality of lenses are formed by the moire effect generated by superimposition of the plurality of unit display units. The display pattern of the unit display unit is arranged to display a composite image formed by combining a plurality of images to be displayed, and without displaying an enlarged image of the second image as the composite image , An enlarged image of the first image Display body is provided and displaying One more.

According to a second aspect of the present invention, there is provided a display body that is regularly arranged and includes a plurality of unit display portions each including a display pattern, the display body being one of the plurality of unit display portions. A first display unit including a second display unit and a second display unit including another part of the plurality of unit display units, wherein the first display unit is configured as the part of the plurality of unit display units. A plurality of first unit display units that display the first image, and one or more second unit display units that display a second image different from the first image. And when a lens array including a plurality of regularly arranged lenses is overlapped, a moire effect caused by the overlapping of the partial array of the plurality of unit display units and the array of the plurality of lenses. , The display patterns of the unit display sections are respectively displayed. As synthetic image obtained by synthesizing a plurality of images, without displaying an enlarged image of the second image, the display body and displaying an enlarged image of the first image at least one is provided.

  According to a third aspect of the present invention, there is provided a labeled article characterized by including the display according to the first or second aspect and an article supporting the display.

  According to the present invention, an excellent anti-counterfeit effect can be achieved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same referential mark is attached | subjected to the component which exhibits the same or similar function through all the drawings, and the overlapping description is abbreviate | omitted.

  FIG. 1 is a perspective view showing a display body according to a first aspect of the present invention. FIG. 2 is an exploded perspective view of the display body shown in FIG. FIG. 3 is a plan view schematically showing the display shown in FIG. FIG. 4 is a cross-sectional view taken along line IV-IV of the display shown in FIG.

  In these drawings, the X direction is a direction parallel to the main surface of the display body, the Y direction is a direction parallel to the main surface of the display body and intersects the X direction, and the Z direction is the X direction and This is a direction perpendicular to the Y direction. Here, the X direction and the Y direction are substantially orthogonal to each other, but they may intersect obliquely.

  As shown in FIGS. 1, 2 and 4, the display body 10 includes a structural layer 11 and a lens layer 12. The structural layer 11 and the lens layer 12 face each other, and are bonded via an adhesive layer 13 as shown in FIGS. 1 and 4. The front side of the display body 10 is the lens layer 12 side, and the back side is the structural layer 11 side.

  As shown in FIG. 4, the structural layer 11 includes a laminate of a base material 111 and a concavo-convex forming layer 112. The structural layer 11 may have a single layer structure or a multilayer structure.

  The substrate 111 is, for example, a film or sheet made of a resin such as polyethylene terephthalate (PET) and polycarbonate (PC). An inorganic material such as glass may be used as the material of the substrate 111. The substrate 111 may be transparent or opaque. The substrate 111 may have a single layer structure or a multilayer structure. The base material 111 may be subjected to processing such as antireflection processing, low antireflection processing, hard coating processing, antistatic processing, and antifouling processing. The substrate 111 can be omitted.

  The unevenness forming layer 112 covers one main surface of the substrate 111. The unevenness forming layer 112 may be transparent or opaque.

  One main surface of the structural layer 11, here, the main surface on the concave-convex forming layer 112 side, includes a plurality of unit regions arranged regularly. 2 and 3, a broken line BL represents the boundary between these unit areas. Note that portions of the structural layer 11 corresponding to the plurality of unit regions correspond to unit display portions, respectively.

  These unit regions can be arranged in a lattice shape such as a square lattice, a rectangular lattice, or a triangular lattice. Here, as an example, the unit regions are arranged in a substantially square lattice pattern.

  A part of each unit region is provided with an uneven pattern DP shown in FIG. 4 as a display pattern. Each uneven pattern DP constitutes a diffractive structure such as a diffraction grating and a hologram. Here, as an example, it is assumed that each concavo-convex pattern DP constitutes a diffraction grating.

  In most unit regions, the concave / convex pattern DP constitutes a first display pattern DP1 shown in FIG. The concavo-convex patterns DP constituting these display patterns DP1 have the same structure and the same direction.

  In the remaining unit area, the concave / convex pattern DP constitutes the second display pattern DP2a or DP2b shown in FIG. The display pattern DP2a and the display pattern DP1 are at least different in planar shape. The display pattern DP2b includes the same structure as the display pattern DP2a, and further includes a structure whose planar shape is an A-shape.

  The uneven pattern DP is regularly arranged corresponding to the unit area. Here, as an example, it is assumed that each concavo-convex pattern DP is located substantially at the center of the unit region.

  The concavo-convex forming layer 112 can be formed, for example, by pressing a mold provided with fine convex portions and / or concave portions against a resin, as is done in the manufacture of surface relief holograms. For example, the unevenness forming layer 112 is a method of pressing a mold having protrusions and / or protrusions against a thermoplastic resin layer formed on the substrate 111 while applying heat, that is, heat embossing. Obtained by processing method. Alternatively, the concavo-convex forming layer 112 is formed by applying an ultraviolet curable resin on the base material 111 and irradiating the ultraviolet light from the base material 111 side while pressing the mold to cure the ultraviolet curable resin. It can also be formed by a method of removing.

  This mold is manufactured using, for example, an electron beam drawing apparatus. For example, first, electron beam drawing is performed on the resist layer to obtain an original plate including an uneven pattern made of resin. Next, a mold including an inverted pattern of the concavo-convex pattern provided on the original plate is obtained by electroforming. Thereafter, the mold pattern is transferred to a thermoplastic resin or ionizing radiation curable resin layer to produce a plurality of plates, and a plurality of dies are produced from these plates by electroforming. By transferring the concavo-convex pattern of the mold thus obtained to the resin layer, the concavo-convex formation layer 112 provided with the concavo-convex pattern DP on one main surface can be obtained.

  As a material of the unevenness forming layer 112, for example, a thermoplastic resin material such as an acrylic resin, a polycarbonate resin, a styrene resin, and an acrylic / styrene copolymer resin or an ultraviolet curable resin can be used. As a material of the unevenness forming layer 112, an inorganic material containing a silicate may be used instead of using a resin.

  The surface of the structural layer 11 on which the concave / convex pattern DP is provided is covered with a reflective layer 14 as shown in FIG. The reflective layer 14 increases the diffraction efficiency of the uneven pattern DP, for example. The reflective layer 14 may be patterned. For example, only the uneven pattern DP may be covered. The reflective layer 14 can be omitted.

  The reflective layer 14 is a metal layer, for example. As a material for the metal layer, for example, aluminum, silver, or an alloy thereof can be used. The metal layer can be formed, for example, by a vapor deposition method such as a vacuum evaporation method or a sputtering method. When the reflective layer 14 made of metal or alloy is formed by vapor deposition, a thickness of about 30 to 100 nm is sufficient, for example.

The reflective layer 14 may be a single-layer or multilayer dielectric film. For example, when a transparent single-layer dielectric film is used as the reflective layer 14, an object on the back side of the display body 10 may be visually recognized when the display body 10 is observed with the naked eye. When a multilayer dielectric film is used as the reflective layer 14, the display 10 can be given wavelength selectivity. Accordingly, it is possible to obtain a visual effect different from the case where a metal vapor deposition layer or a single-layer dielectric film is used as the reflective layer 14. The multilayer dielectric film is obtained by alternately depositing a high refractive index material such as zinc sulfide and a low refractive index material such as magnesium fluoride on the substrate 11.
As shown in FIGS. 1, 2, and 4, the lens layer 12 includes a transparent substrate 121 and a plurality of lenses 122.

  The transparent substrate 121 is, for example, a film or sheet made of a resin such as PET and PC. An inorganic material such as glass may be used as the material of the substrate 121. The transparent substrate 121 may have a single layer structure or a multilayer structure. The base material 121 may be subjected to processing such as antireflection processing, low antireflection processing, hard coat processing, antistatic processing, and antifouling processing. The substrate 121 can be omitted.

  The lenses 122 are regularly arranged on one main surface of the transparent substrate 121. For example, the lenses 122 can be arranged in a lattice shape such as a square lattice, a rectangular lattice, or a triangular lattice. Here, as an example, the lenses 122 are arranged in a substantially square lattice pattern.

  The lens 122 is a spherical lens, for example. The lens 122 may be an aspheric lens or a rectangular lens. Note that the spherical lens is a lens having a surface formed of a part of a spherical surface. An aspherical lens is a lens having a surface composed of a part of a spherical surface whose shape is slightly shifted. The rectangular lens is a lens having a rectangular or square cross section parallel to the Z direction, and forms, for example, a lattice or striped lens array when observed from a direction parallel to the Z direction.

  When the lens 122 is a convex lens such as a spherical lens or a specific spherical lens, a clearer image can be displayed on the display body 10 by shortening the distance from the focal point of the lens 122 to the concave-convex pattern DP. The distance from the focal point of the lens 122 to the concave-convex pattern DP can be controlled by, for example, the focal length of the lens 122 and / or the thickness of the substrate 121 and the like. Note that when the concave-convex pattern DP is positioned at the focal point of the lens 122 and another pattern is provided at a position deviated from the focal point, an image with a sense of depth can be displayed on the display body 10.

  When the lens 122 is a rectangular lens and these constitute a lens array having a lattice shape or a stripe shape when observed from a direction parallel to the Z direction, there is no focal point. Therefore, in this case, it is not necessary to strictly control the distance from the lens array to the concave / convex pattern DP.

  The lens array can be formed, for example, by pressing a mold having a plurality of recesses against the resin. For example, the lens array is a method in which a mold provided with a concave portion corresponding to the lens 122 is pressed against a thermoplastic resin layer formed on the substrate 121 while applying heat, that is, heat embossing. Obtained by law. Alternatively, the lens array is a method in which an ultraviolet curable resin is applied onto the base material 121, the ultraviolet curable resin is irradiated from the base material 121 side while the mold is pressed against the base 121, and then the mold is removed. It is also possible to form by.

  As the material of the lens array, for example, thermoplastic resin materials such as acrylic resins, polycarbonate resins, styrene resins, and acrylic / styrene copolymer resins, or ultraviolet curable resins can be used. As a material for the lens array, an inorganic material containing a silicate may be used instead of using a resin. The material of the lens array may be higher in viscosity than the material of the unevenness forming layer 112.

  The adhesive layer 13 is transparent and bonds the structural layer 11 and the lens layer 12 together. As a material of the adhesive layer 13, for example, an ultraviolet curable resin can be used.

  The adhesive layer 13 can be omitted. In this case, the structural layer 11 and the lens layer 12 may be integrated using a fixture. Note that when the adhesive layer 13 is omitted, an air layer is generated between the structural layer 11 and the lens layer 12, so that high diffraction efficiency can be easily achieved even if the reflective layer 14 is omitted.

  In this display body 10, the concave / convex pattern DP, that is, the display patterns DP1, DP2a and DP2b are regularly arranged corresponding to the unit areas as shown in FIG. 3, and the lens 122 has the same period as the arrangement of the concave / convex pattern DP. Are arranged regularly. Then, the orientations of the arrangement of the concavo-convex pattern DP and the arrangement of the lenses 122 are slightly different. In addition, in the display device 10, more display patterns DP1 are arranged as compared with the display patterns DP2a and DP2b.

  As described above, when the arrangement of the concave / convex patterns and the arrangement of the lenses 122 are shifted and overlapped, a composite image formed by combining a plurality of diffraction images respectively displayed by the plurality of concave / convex patterns DP is displayed due to the moire effect. This combined image is an enlarged image of the image displayed by the display pattern DP1 when the display patterns DP2a and DP2b are less than the display pattern DP1 and the display pattern DP1 is distributed substantially uniformly. The enlarged image of the display pattern DP2a or DP2b is not displayed. That is, the display patterns DP2a and DP2b hold latent images that cannot be perceived with the naked eye, but can be perceived by observation using a microscope or the like.

  FIG. 5 is a plan view schematically showing an example of an image displayed by the display shown in FIG. 1 when the lens array is omitted. FIG. 6 is a plan view schematically showing an example of an image displayed by the display body shown in FIG. FIG. 7 is a plan view schematically showing another example of an image displayed by the display shown in FIG. FIG. 5 shows only a part of the display body, and FIGS. 6 and 7 show the entire display body.

  When the lens array is omitted from the display body 10, the moire effect does not occur. Therefore, the diffraction images displayed by each of the displays DP1, DP2a, and DP2b are not synthesized, and the display 10 displays a plurality of diffraction images I1, I2a, and I2b corresponding to the plurality of unit regions as shown in FIG. indicate.

  If the arrangement of the concave / convex pattern DP and the arrangement of the lens 122 are shifted and overlapped as described with reference to FIG. 3 without omitting the lens array, a moire effect is produced, and the display 10 is shown in FIG. An enlarged image of the diffraction image I1 is displayed as a composite image formed by combining the plurality of diffraction images I1, I2a, and I2b. For example, the display 10 displays one magnified image I1 ′ as shown in FIG. 6, displays two magnified images I1 ′ as shown in FIG. 7, or more magnified images I1. 'Is displayed.

  Thus, the display body 10 displays an enlarged image I1 'obtained by enlarging the diffraction image I1, and does not display enlarged images of the diffraction images I2a and I2b. The diffraction images I2a and I2b can be perceived by observation using a microscope or the like, but usually cannot be perceived by observation with the naked eye. In addition, even when observed using a microscope, a large number of diffraction images I21 make it difficult to understand the presence of diffraction images I2a and I2b.

  Therefore, when the display pattern DP2a and / or DP2b is used as identification information, it is difficult to recognize the existence of the identification information. Therefore, when this display body 10 is used, it becomes possible to achieve an excellent anti-counterfeit effect.

  Further, as described above, the display body 10 displays an enlarged image I1 'obtained by enlarging the small diffraction image I1. Since the magnified image I1 ′ is a composite image obtained by synthesizing a plurality of diffraction images I1 and the like, even if a missing portion is generated in a part of the display pattern DP1, this missing portion is formed in the magnified image I1 ′. There is little perceptible effect. In addition, the operation of the electron beam drawing apparatus and / or the surrounding environment fluctuates between the start and end of drawing, and this causes a mismatch between the pattern immediately after the start of drawing and the pattern immediately before the end of drawing. Even if it occurs, this discrepancy has little appreciable effect on the magnified image I1 ′.

  In addition, in the display body 10, the uneven pattern DP is not provided over the entire unit area, but is provided only over a part of the unit area. Therefore, compared with the case where the concave / convex pattern DP is provided in the entire unit area, the time required for electron beam drawing for manufacturing the original plate can be shortened, and occurs between the pattern immediately after the start of drawing and the pattern immediately before the end of drawing. Shape mismatch can be reduced. In addition, since the drawing time can be shortened, the fluctuations in the drawing conditions are reduced, and hence the control thereof is facilitated.

  Further, when the concavo-convex pattern DP is provided only in a part of the unit region, the releasability from the mold of the concavo-convex formation layer 112 is insufficient compared to the case where the concavo-convex pattern DP is provided in the entire unit region. Can be easily prevented. In other words, it is possible to perform the peeling of the mold from the original plate and the resin layer from the mold with a small force, as well as the zipping at the time of peeling the mold from the original plate or the resin layer from the mold. It is easy to suppress the resulting peeling unevenness and pattern loss. Therefore, it is possible to form the concavo-convex pattern DP having excellent shape accuracy without requiring measures for reducing the throughput or improving the releasability. For the same reason, the same effect can be obtained in the mold manufacturing process.

  Therefore, even if this display body 10 is a case where a display area is large, it is easy to manufacture with high productivity and to display the image as designed.

  In the display body 10, for example, the display pattern DP1 is disposed as the concave / convex pattern DP in 80% or more of the unit area. If the display pattern DP1 is small, the enlarged image I1 'becomes unclear.

  The ratio of the magnified image I1 'to the size of the diffracted image I1, that is, the magnification, changes according to the angle α shown in FIG. Note that the angle α is an angle formed by the unit region row and the lens 122 row. As the angle α is decreased, the enlargement ratio is increased. However, when the angle α is set to 0 °, the enlarged image I1 ′ has an infinite size, so that the entire image cannot be observed. The angle α is, for example, several degrees, typically about 2 °.

  In the display 10, the moire effect is generated by the structure described with reference to FIG. 3, but the moire effect can also be generated when other structures are employed. For example, the orientations of the unit region array and the lens 122 array may be matched, and the pitches in the X direction and Y direction of the array may be different. Alternatively, the orientation and pitch of the unit region array and the lens 122 array may be matched, and the relative position of the concave / convex pattern DP with respect to the unit region may be different between the unit regions. For example, in the substantially central unit region, the concave / convex pattern DP may be positioned at the center of the unit region, and the position of the concave / convex pattern DP may be shifted outward from the center of the unit region in accordance with the distance from the previous unit region.

  As described above, in the display body 10, each concave-convex pattern DP forms a diffractive structure. A part or all of the concavo-convex pattern DP may be a scattering structure in which concave portions such as grooves and / or convex portions such as lines are arranged irregularly or with a low degree of order. Alternatively, part or all of the uneven pattern DP has a fine structure in which concave portions such as grooves and / or convex portions such as streaks are irregularly or regularly arranged at a pitch shorter than the shortest wavelength in the visible light region. There may be.

  The display body 10 may include a print pattern instead of at least one of the display patterns DP1, DP2a, and DP2b. However, if all of the display patterns DP1, DP2a, and DP2b are replaced with print patterns, the display body 10 can be easily forged.

  Alternatively, the display body 10 may further include a plurality of print patterns respectively facing the plurality of unit areas. That is, each unit display unit may further include a printing pattern in addition to the uneven pattern DP.

  For example, the same print pattern is provided in many unit display portions. And the relative position of the uneven | corrugated pattern DP in a unit display part and a printing pattern is made constant substantially the whole display body 10. FIG. In this way, when the display body 10 is observed with the naked eye, in addition to the above-described magnified image I1 ', the magnified image of the print image displayed by each print pattern is displayed by the moire effect.

  Alternatively, a print pattern is provided in a small number of unit display portions. In this way, when the display body 10 is observed with the naked eye, it displays the above-described enlarged image I1 'and does not display the print image. Therefore, in this case, the print pattern can be used as identification information or a part thereof.

  For example, the print pattern is disposed between the reflective layer 14 and the adhesive layer 13. When the reflective layer 14 is light transmissive, the print pattern may be disposed between the reflective layer 14 and the unevenness forming layer 112 or between the unevenness forming layer 112 and the substrate 111. .

  The display body 10 can employ another laminated structure instead of the laminated structure shown in FIG.

  8 to 12 are cross-sectional views schematically showing a display body according to a modification.

  The display body 10 shown in FIG. 8 has the same structure as the display body 10 shown in FIG. 4 except that the structural layer 11 is bonded to the lens layer 12 so that the base 111 faces the lens layer 12. ing. In this structure, since the flat surfaces are bonded to each other, bonding is easy. Further, in the structure in which the adhesive layer 13 is omitted from the display body 10, the concave / convex pattern DP or the reflective layer 14 is not damaged by friction with the lens layer 12.

  The display body 10 shown in FIG. 9 has the same structure as the display body 10 shown in FIG. 4 except that the lens layer 12 is bonded to the structural layer 11 so that the lens 122 faces the structural layer 11. Yes. In this structure, since the base materials 111 and 121 are the outermost layers, it is difficult to cause damage to members such as the lens 122 interposed therebetween.

  The display body 10 shown in FIG. 10 has the same structure as the display body 10 shown in FIG. 8 except that the lens layer 12 is bonded to the structural layer 11 so that the lens 122 faces the structural layer 11. Yes. With this structure, the lens 122 is hardly damaged. Further, in the structure in which the adhesive layer 13 is omitted from the display body 10, the concave / convex pattern DP or the reflective layer 14 is not damaged by friction with the lens layer 12.

  The display body 10 shown in FIG. 11 has the same structure as the display body 10 shown in FIG. 4 except that the base material 121 and the adhesive layer 13 are omitted. That is, in the display body 10, a lens 122 is formed on the reflective layer 14. Since this display body 10 has a smaller number of parts than the display body 10 shown in FIG. 4, it can be manufactured with fewer steps. Further, the display body 10 can be formed thinner than the display body 10 shown in FIG. 4, and the distance between the focal point of the lens 122 and the concave / convex pattern DP can be easily controlled.

  The display body 10 shown in FIG. 12 has the same structure as the display body 10 shown in FIG. 8 except that the base material 121 and the adhesive layer 13 are omitted. That is, in the display body 10, a lens 122 is formed on the base material 111. Since this display body 10 has a smaller number of parts than the display body 10 shown in FIG. 8, it can be manufactured with fewer steps. Further, the display body 10 can be formed thinner than the display body 10 shown in FIG. 8, and in addition, the distance between the focal point of the lens 122 and the uneven pattern DP can be easily controlled.

  The display body 10 described above can display a three-dimensional image by devising the shape of the lens 122 and the arrangement of the concavo-convex pattern DP. Moreover, if this is modulated instead of making the pitch of the lens 122 constant, the visual effect can be changed.

Next, the second aspect of the present invention will be described.
FIG. 13 is a plan view schematically showing a display body according to the second aspect of the present invention. FIG. 14 is a plan view schematically showing an example of an image displayed when the display shown in FIG. 13 overlaps the verification tool. FIG. 15 is a plan view schematically showing another example of an image displayed when the display shown in FIG. 13 overlaps the verification tool.

  The display body 11 ′ shown in FIG. 13 is the same as the display body 10 described with reference to FIGS. 1 to 4 except that the lens layer 12 and the adhesive layer 13 are omitted and the following configuration is adopted. is there.

  That is, the display body 11 'has a structure substantially similar to the structure layer 11 shown in FIGS. The display body 11 'includes a first part A1 and a second part A2. Note that at least a part of the structural layer 11 may be covered with the reflective layer 14.

  Each unit area of the first portion A1 includes a display pattern DP1 or DP2a. In the first portion A1, the display pattern DP1 is provided in most unit areas, and the display pattern DP2a is provided in the remaining unit areas.

  Similarly to the first part A1, in the second part A2, each unit region includes the display pattern DP1 or DP2a. However, in the second portion A2, the display pattern DP2a is provided in most of the unit areas, and the display pattern DP1 is provided in the remaining unit areas.

  For example, the display patterns DP1 and DP2a are made sufficiently small to cause them to display substantially the same color and to make their areas substantially equal. Thus, when the display body 11 ′ is observed with the naked eye, the display pattern DP1 and the display pattern DP2a are identified from each other, or the first portion A1 and the second portion A2 are identified from each other. This can be impossible or difficult.

  14 and 15 has the same structure as the lens layer 12 described above.

  As shown in FIG. 14, when the verification tool 12 ′ is superimposed on the first portion A1, the first portion A1 displays the display pattern DP1 without displaying the enlarged image of the diffraction image displayed by the display pattern DP2a. An enlarged image I1 ′ of the diffraction image to be displayed is displayed. As shown in FIG. 15, when the verification tool 12 ′ is overlaid on the second portion A2, the second portion A2 displays the display pattern DP2a without displaying the enlarged image of the diffraction image displayed by the display pattern DP1. An enlarged image I2a ′ of the diffraction image to be displayed is displayed.

  When the verification tool 12 ′ is stacked so as to face both the first part A1 and the second part A2, the display body 11 ′ does not display, for example, any of the enlarged images I1 ′ and I2a ′. , Do not display them clearly. Therefore, for example, when the second portion A2 surrounds the first portion A1, the size of the verification tool 12 ′ is made equal to or smaller than the size of the first portion A1, and the verification tool 12 ′. Is not overlapped with the first portion A1 so that it does not face the second portion A2, the enlarged image I1 ′ cannot be displayed or cannot be displayed clearly.

  Thus, in the display body 11 ′, the display pattern DP1 forms a latent image that is visualized by overlapping the verification tool 12 ′ in the first portion A1, and the display pattern DP2a is the verification tool 12 in the second portion A2. A latent image that is visualized by overlaying 'is constructed. In the display body 11 ′, when observing with the naked eye, the display pattern DP1 and the display pattern DP2a are identified from each other, and the first portion A1 and the second portion A2 are identified from each other. This can be impossible or difficult. In addition, in order to obtain a clear magnified image I1 'or I2a' by the display body 11 ', it is necessary to overlap the verification tool 12' only on one of the first part A1 and the second part A2.

  Therefore, when the display pattern DP1 and / or DP2a is used as identification information, it is difficult to recognize the existence of the identification information. Even if the existence of the identification information is realized, it is difficult to determine in which part of the display body 11 'each identification information is recorded. Therefore, when this display body 10 is used, it becomes possible to achieve an excellent anti-counterfeit effect.

  In the display body 11 ′, the display patterns DP <b> 1 and DP <b> 2 a may be the front side, and the back side may be the front side.

  The display body 11 ′ may include a print pattern instead of at least one of the display patterns DP <b> 1 and DP <b> 2 a as described for the display body 10. The display body 11 ′ may further include a plurality of print patterns respectively facing the plurality of unit areas, as described for the display body 10.

  In the display 11 ′, the display pattern DP1 is used as a display pattern that occupies a majority in the first portion A1 and a display pattern that occupies a small number in the second portion A2, and the display pattern that occupies a small number in the first portion A1. The display pattern DP2a is used as a display pattern that occupies a large number in the second portion A2.

  The display pattern that occupies the majority in the first portion A1 and the display pattern that occupies a small number in the second portion A2 may be different from each other. The display pattern occupying a small number in the first portion A1 and the display pattern occupying a large number in the second portion A2 may be different from each other. However, if the same display pattern is used in the first part A1 and the second part A2, the first part A1 and the second part A2 cannot be distinguished from each other when viewed with the naked eye. Easy to do.

  For example, the display bodies 10 and 11 ′ are supported on an article whose forgery or unauthorized use is to be suppressed. For example, when a labeled article including the display body 10 or 11 ′ and an article that supports the display body 10 or 11 ′ is an authentic article, an article whose authenticity is unknown does not exhibit one or more of the above-described features. Sometimes it can be determined that the article is non-genuine. That is, it is possible to discriminate an article whose authenticity is unknown between a genuine product and a non-authentic product. Therefore, forgery of, for example, certificates such as securities, banknotes, identification cards, and printed materials such as credit cards, and luxury items such as arts and crafts can be prevented or suppressed.

  When the display body 10 or 11 'is used as a label, the display body 10 or 11' can be supported on the article by various methods. For example, an adhesive layer may be provided on the display body 10 or 11 ′, and the display body 10 or 11 ′ may be attached to the article via the adhesive layer. Alternatively, a transfer foil including the display body 10 or 11 ′, in particular, the display body 11 ′ and an adhesive layer made of a thermoplastic resin is manufactured, and the display body 10 is attached to an article by transfer using heat and pressure. May be. Or you may manufacture the tag containing the display body 10 or 11 ', and may support this to articles | goods via attachments, such as a string and a chain | strand. Alternatively, a packaging material including the display body 10 or 11 ′ may be manufactured and an article may be packaged with the packaging material.

  The display bodies 10 and 11 'can also be used for purposes other than forgery prevention. For example, an optical kit including a display body 10 and a verification tool such as a magnifying glass or an optical kit including a display body 11 ′ and a verification tool 12 ′ can be used for the above-described authenticity determination. It can also be used as a toy, learning material or decoration. That is, the display bodies 10 and 11 'provide an anti-counterfeit effect, a decorative effect, and / or an aesthetic effect.

(Example 1)
In this example, the display body 10 having substantially the same structure as that described with reference to FIGS. 1 to 4 except that the adhesive layer 13 was omitted was manufactured.

  Specifically, the structural layer 11 was produced by the following method. First, an original plate made of a resin was manufactured using an electronic drawing apparatus, and a mold was manufactured from this original plate by electroforming. Next, an acrylic resin was injected into the mold as an ultraviolet curable resin, and this resin layer and a PET film 111 having a thickness of 50 μm were laminated. The resin was cured by irradiating ultraviolet rays from the PET film 111 side, and then peeled from the mold together with the resin layer on which the PET film 111 was cured. Thereby, the diffractive structure sheet 11 including the PET film 111 and the unevenness forming layer 112 was obtained.

  The mold was designed so that the concave / convex pattern DP was arranged in a square lattice pattern at a pitch of 100 μm in a square region with a side of 100 mm on the surface of the concave / convex forming layer 112. The spatial frequency of the grooves of the concavo-convex pattern DP was about 1500 / mm. As the concavo-convex pattern DP, four concavo-convex patterns having a square shape of 20 μm square and a large number of concavo-convex patterns having a circular shape having a diameter of 20 μm were arranged. Specifically, when considering a Cartesian coordinate system (unit: mm) in which the vertex of one corner of the square area is the origin and the pair of sides forming this corner are the X axis and the Y axis, respectively. In addition, square uneven patterns are arranged at four positions represented by coordinates (10, 10), coordinates (90, 10), coordinates (10, 90), and coordinates (90, 90), and circular at the remaining positions. An uneven pattern was arranged.

  Here, the mold was not subjected to mold release treatment. The laminating pressure was set light so that the thickness of the unevenness forming layer 112 was about 15 μm. When this mold and the unevenness forming layer 112 were examined, it was confirmed that there was no peeling unevenness at the time of molding and that the resin layer could be peeled cleanly from the mold.

  On the unevenness forming layer 112, the reflective layer 14 made of aluminum was formed by vapor deposition. The thickness of the reflective layer 14 was about 40 to about 60 nm.

  The lens layer 12 was produced by the following method. First, an acrylic / styrene copolymer resin was injected into the mold as an ultraviolet curable resin, and this resin layer and a PET film 121 having a thickness of 75 μm were laminated. The resin was cured by irradiating ultraviolet rays from the PET film 121 side, and then peeled from the mold together with the cured resin layer of the PET film 121. As a result, a microlens sheet 12 in which lenses 122 having a pitch of 100 μm, a height of about 26 μm, and a focal length of about 90 μm were arranged in a square lattice pattern on the PET film 121 was obtained.

  The diffractive structure sheet 11 and the microlens sheet 12 thus obtained were superposed so that the reflective layer 14 was interposed therebetween. The display body 10 was completed as described above.

  When the diffractive structure sheet 11 is fixed and the microlens sheet 12 is rotated around its normal line, the display 10 displays a circular image enlarged with respect to the concavo-convex pattern, and the size of this image is the rotation angle. It changed according to. Further, when an enlarged image displayed by the display body 10 was observed, no display unevenness due to unevenness in electron beam drawing or uneven deposition was observed, and diffracted light could be clearly perceived.

(Example 2)
In this example, the display body 10 having the substantially same structure as described with reference to FIG. 12 was manufactured.

  Specifically, a PET film 111 having a thickness of 90 μm was used, and the pitch of the concavo-convex pattern DP was set to 85 μm. And the uneven | corrugated pattern DP of the position represented by a coordinate (50, 50) was made into the shape formed by combining circular and A shape. Except for this, the diffractive structure sheet 11 was produced in the same manner as described in Example 1. Also in this example, as in Example 1, there was no peeling unevenness at the time of molding, and the resin layer could be peeled cleanly from the mold.

  Next, the lens 122 was formed by the following method on the back surface of the surface on which the unevenness forming layer 112 of the base material 111 was formed. First, an acrylic / styrene copolymer resin was injected into the mold as an ultraviolet curable resin, and this resin layer and the diffractive structure sheet 11 were laminated so that the ultraviolet curable resin layer faced the substrate 111.

  The resin was cured by irradiating ultraviolet rays from the concave / convex forming layer 112 side, and then peeled from the mold together with the cured resin layer of the diffraction structure sheet 11. As a result, the microlens sheet 12 in which the lenses 122 were arranged in a square lattice pattern on the PET film 111 was obtained.

  The pitch, height, and focal length of the lenses 122 were the same as in Example 1. In addition, the arrangement direction of the lenses 122, that is, the orientation of the lens array was made to coincide with the arrangement direction of the uneven pattern DP.

  Thereafter, the same reflective layer 14 as described in Example 1 was formed on the unevenness forming layer 112. The display body 10 was completed as described above.

This display body displayed an enlarged circular image with respect to the uneven pattern. Further, when an enlarged image displayed by the display body 10 was observed, no display unevenness due to unevenness in electron beam drawing or uneven deposition was observed, and diffracted light could be clearly perceived.
The invention described in the original claims is appended below.
[1]
A plurality of unit display units regularly arranged and each including a display pattern; and a plurality of lens units regularly arranged, and a lens array facing the plurality of unit display units. The unit display unit includes a plurality of first unit display units in which the display pattern displays a first image, and one or more second unit units in which the display pattern displays a second image different from the first image. The display pattern of the plurality of unit display units and the plurality of lenses, the display pattern of the plurality of unit display units due to a moire effect caused by superposition of their arrangement. Are arranged so as to display a composite image formed by combining a plurality of images to be displayed, and the enlarged image of the first image is displayed as the composite image without displaying the enlarged image of the second image. Display one or more Display body.
[2]
The display body according to claim 1, wherein the second image does not include the first image.
[3]
The display body according to claim 1, wherein the second image includes the first image and another image.
[4]
A display body regularly arranged and including a plurality of unit display portions each including a display pattern, wherein the display body includes a first display portion including a part of the plurality of unit display portions; A first display part including another part of the plurality of unit display parts, wherein the first display part has the first pattern as the part of the plurality of unit display parts. A plurality of first unit display units for displaying the image, and one or more second unit display units for displaying the second image whose display pattern is different from the first image. When the lens arrays including the lenses are overlapped, the display of the unit display units is performed due to the moire effect caused by the overlapping of the partial array of the plurality of unit display units and the array of the plurality of lenses. A combination of multiple images that each pattern displays. As an image, the second without displaying an enlarged image of the image display body and displaying an enlarged image of the first image 1 or more.
[5]
The second display unit includes, as the other part of the plurality of unit display units, a plurality of third unit display units that display a third image whose display pattern is different from the first image, and the display And at least one fourth unit display unit that displays a fourth image different from the third image, and when the lens array is overlaid, the other one of the plurality of unit display units. As a composite image formed by combining a plurality of images respectively displayed by the display pattern of the unit display unit due to a moire effect generated by superimposing the array of the parts and the array of the plurality of lenses, the fourth image Item 5. The display object according to Item 4, wherein one or more magnified images of the third image are displayed without displaying a magnified image.
[6]
The display body according to claim 5, wherein the fourth image is equal to the second image.
[7]
The plurality of unit display portions include a plurality of unit regions arranged corresponding to one of the main surfaces, and constitute a structural layer in which an uneven pattern is provided in at least one of the unit regions, The display body according to any one of claims 1 to 6, wherein at least one of the plurality of unit display portions includes the uneven pattern as at least a part of the display pattern.
[8]
Item 8. The display body according to item 7, wherein at least a part of the uneven pattern forms a diffractive structure.
[9]
The display body according to any one of claims 1 to 8, wherein at least one of the plurality of unit display units includes a print pattern as at least a part of the display pattern. [10]
The display body according to any one of claims 7 to 9, further comprising a reflective layer covering at least a part of the main surface.
[11]
The display body according to claim 7, wherein the lens array is formed on the one main surface or the other main surface of the structural layer.
[12]
Item 11. The structure according to any one of Items 7 to 10, further comprising a transparent base material having one main surface supporting the lens array and the other main surface facing the other main surface of the structural layer. Display body of description.
[13]
11. The device according to any one of claims 7 to 10, further comprising a transparent base material, one main surface supporting the lens array, and facing the other main surface of the structural layer with the lens array interposed therebetween. The display body according to item 1.
[14]
11. The method according to any one of claims 7 to 10, further comprising a transparent base material, one main surface supporting the lens array, and the other main surface facing the one main surface of the structural layer. Display body described in 1.
[15]
11. The method according to any one of claims 7 to 10, further comprising: a transparent substrate that supports one of the main surfaces and that faces the one main surface of the structural layer with the lens array interposed therebetween. The display body according to item 1.
[16]
Item 16. A labeled article comprising the display body according to any one of items 1 to 15 and an article supporting the display body.

The perspective view which shows the display body which concerns on the 1st aspect of this invention. The disassembled perspective view of the display body shown in FIG. The top view which shows schematically the display body shown in FIG. Sectional drawing along the IV-IV line of the display body shown in FIG. The top view which shows roughly an example of the image which the display body shown in FIG. 1 displays when a lens array is abbreviate | omitted. The top view which shows roughly an example of the image which the display body shown in FIG. 1 displays. The top view which shows roughly the other example of the image which the display body shown in FIG. 1 displays. Sectional drawing which shows schematically the display body which concerns on a modification. Sectional drawing which shows schematically the display body which concerns on a modification. Sectional drawing which shows schematically the display body which concerns on a modification. Sectional drawing which shows schematically the display body which concerns on a modification. Sectional drawing which shows schematically the display body which concerns on a modification. The top view which shows roughly the display body which concerns on the 2nd aspect of this invention. The top view which shows roughly an example of the image displayed when the display body shown in FIG. 13 piles up a verification tool. The top view which shows roughly the other example of the image displayed when the display body shown in FIG. 13 piles up a verification tool.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Display body, 11 ... Structural layer, 11 '... Display body, 12 ... Lens layer, 12' ... Verification tool, 13 ... Adhesive layer, 14 ... Reflective layer, 111 ... Base material, 112 ... Concave-forming layer, 121 ... base material, 122 ... lens, BL ... unit area boundary, DP ... uneven pattern, DP1 ... display pattern, DP2a ... display pattern, DP2b ... display pattern, I1 ... diffraction image, I2a ... diffraction image, I2b ... Diffraction image.

Claims (16)

  A plurality of unit display units regularly arranged and each including a display pattern; and a plurality of lens units regularly arranged, and a lens array facing the plurality of unit display units. The unit display unit includes a plurality of first unit display units in which the display pattern displays a first image, and one or more second unit units in which the display pattern displays a second image different from the first image. The display pattern of the plurality of unit display units and the plurality of lenses, the display pattern of the plurality of unit display units due to a moire effect caused by superposition of their arrangement. Are arranged so as to display a composite image formed by combining a plurality of images to be displayed, and the enlarged image of the first image is displayed as the composite image without displaying the enlarged image of the second image. Display one or more Display body.   The display body according to claim 1, wherein the second image does not include the first image.   The display body according to claim 1, wherein the second image includes the first image and another image. A display body regularly arranged and including a plurality of unit display portions each including a display pattern, wherein the display body includes a first display portion including a part of the plurality of unit display portions; A second display unit including another part of the plurality of unit display units, wherein the first display unit includes the first pattern as the part of the plurality of unit display units. A plurality of first unit display units for displaying the image, and one or more second unit display units for displaying the second image whose display pattern is different from the first image. When the lens arrays including the lenses are overlapped, the display of the unit display units is performed due to the moire effect caused by the overlapping of the partial array of the plurality of unit display units and the array of the plurality of lenses. A combination of multiple images that each pattern displays. As an image, the second without displaying an enlarged image of the image display body and displaying an enlarged image of the first image 1 or more.   The second display unit includes, as the other part of the plurality of unit display units, a plurality of third unit display units that display a third image whose display pattern is different from the first image, and the display And at least one fourth unit display unit that displays a fourth image different from the third image, and when the lens array is overlaid, the other one of the plurality of unit display units. As a composite image formed by combining a plurality of images respectively displayed by the display pattern of the unit display unit due to a moire effect generated by superimposing the array of the parts and the array of the plurality of lenses, the fourth image The display body according to claim 4, wherein one or more magnified images of the third image are displayed without displaying a magnified image. The display body according to claim 5, wherein the fourth image is equal to the first image .   The plurality of unit display portions include a plurality of unit regions arranged corresponding to one of the main surfaces, and constitute a structural layer in which an uneven pattern is provided in at least one of the unit regions, The display body according to claim 1, wherein at least one of the plurality of unit display portions includes the uneven pattern as at least a part of the display pattern.   The display body according to claim 7, wherein at least a part of the uneven pattern forms a diffractive structure. The display body according to claim 7 , further comprising a reflective layer covering at least a part of the main surface. The display body according to claim 7, wherein the lens array is formed on the one main surface or the other main surface of the structural layer. 10. The transparent substrate according to any one of claims 7 to 9 , further comprising a transparent base material, one main surface supporting the lens array and the other main surface facing the other main surface of the structural layer. Display body described in 1. One principal supporting the lens array, any claim 7 to 9, characterized by including a transparent substrate facing the other main surface of the structural layer in between the lens array further The display body according to item 1. The transparent substrate according to any one of claims 7 to 9 , further comprising a transparent base material, one main surface supporting the lens array and the other main surface facing the one main surface of the structural layer. The display body described in the item. One principal supporting the lens array, according to claim 7 to 9, wherein interposed therebetween that comprises the transparent substrate facing the one main surface of the structural layer further between the lens array The display body according to any one of the above.   The display body according to claim 1, wherein at least one of the plurality of unit display portions includes a print pattern as at least a part of the display pattern.   A labeled article comprising the display body according to any one of claims 1 to 15 and an article that supports the display body.

Images