JP2019126963A - Display device - Google Patents

Abstract

To provide a display device that does not require a complex manufacturing process and exhibits a non-conventional visual effect, for achieving a higher forgery prevention effect.SOLUTION: In the display device having an uneven structure: the uneven structure is formed of a plurality of arrayed cells; at least one part of the plurality of cells is a cell group A that includes at least one part of the uneven structure of a concentric circle pattern arranged in a Fresnel lens shape; the cell group A is formed of two or more single group of cells A1; the single group of cells A1 carries, respectively in each cell, at least an uneven structure obtained by dividing a single uneven structure of the concentric circle pattern arranged in the Fresnel lens shape into an arbitrary number of parts; and while each cell within the single group of cells A1 maintains an array position capable of constituting the concentric circle pattern arranged in the Fresnel shape, an alignment direction of the uneven structure provided inside each cell is inverted in either a horizontal or vertical direction, in each cell plan view, to cause rearrangement.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a structure based on optical technology that provides an anti-counterfeit effect, a decorative effect, or an aesthetic effect.

In fields such as securities, certificates, branded products, dedicated consumables or dedicated replacement parts for electronic devices and various machines, and personal authentication media, it is desirable that forgery or alteration is difficult.
Therefore, in such a field, an optical structure excellent in an anti-counterfeit effect may be supported.

  Many optical structures include fine structures such as diffraction gratings, holograms, scattering structures or lens arrays. These fine structures cause, for example, changes in color and visual image according to changes in the observation angle.

  In addition, these microstructures are difficult to analyze, and forgery is also difficult because they require expensive equipment such as an electron beam drawing apparatus to manufacture. Therefore, these optical structures can exhibit an excellent anti-counterfeit effect.

As a technique related to such a structure, for example, Patent Document 1 proposes a technique in which a pixel is divided into three as an RGB channel and a photographic image quality color image is expressed by a diffractive structure by area gradation inside the channel. .
However, since hologram production technology has become widespread now, it is possible to create fakes that can give a seemingly similar impression, even if you can not make exactly the same thing, with holographic images, etc. that have been photo-imaged Therefore, the forgery prevention effect is becoming smaller.

  Further, in Patent Document 2, it is proposed to generate a more complicated optical effect by providing two layers of an optical variable effect generation structure such as a hologram in an overlapping manner.

  However, such a method complicates the manufacturing process and increases the manufacturing cost.

Unexamined-Japanese-Patent No. 8-211821 gazette JP2015-135519A

  Based on the above problems, the main point of the present invention is a display device that can be used in the field of anti-counterfeiting where new functions are always required, while requiring no complicated manufacturing process and relatively inexpensive. An object of the present invention is to provide a display device capable of exhibiting an unprecedented visual effect and to realize a higher forgery prevention effect.

The present invention has been made to solve these problems.
That is, according to the invention described in claim 1, a display having at least a relief structure forming layer having a concavo-convex structure on the surface, and a reflective layer formed to cover at least a part of the surface on which the concavo-convex structure is formed. A device, wherein the concavo-convex structure comprises a plurality of arranged cells, and at least a part of the plurality of cells is a concavo-convex structure having a structure of a part of a concavo-convex structure of a concentric pattern provided in a Fresnel lens shape. A group A of cells comprising at least a group of two or more cells A1; and a group of cells A1 includes any concavo-convex structure of concentric patterns provided in the form of a single Fresnel lens The concavo-convex structure divided into a number is carried at least in each cell, and each cell in the group of cells A1 is arranged so as to constitute a concentric pattern provided in the Fresnel shape. A display device characterized in that the alignment direction of the concavo-convex structure provided in each cell is reversed in any of the left and right or up and down directions in each cell plan view while maintaining the position, and the display device is rearranged. It is.

  The invention according to claim 2 is that, in the rearrangement of each cell in the group of cells A1, all the cells in at least one group of cells A1 are reversed in the same direction and rearranged. It is a display device of Claim 1 characterized by these.

  The invention according to claim 3 can display the picture pattern by arranging the central positions of the concentric patterns of the group of cells A1 in different positions in the group of cells A consisting of the two or more groups of cells A1. The display device according to claim 1, wherein the display device is disposed in the display device.

  The invention according to claim 4 is characterized in that the concavo-convex structure of the concentric circle pattern provided in the Fresnel lens shape is divided into an arbitrary number, and light is irradiated from any direction to the concavo-convex structure rearranged. In this case, when a high-intensity image point is observed in a direction in which the light source and the center of the concentric pattern are directly opposed, and when the light irradiation direction with respect to the display device plane is rotationally moved, The display device according to any one of claims 1 to 3, wherein the movement of the high brightness image point is observed in the reverse rotation direction.

  The invention according to claim 5 is characterized in that the plurality of cells further includes a cell B group, and the cell B group differs from the uneven structure carried by the cell A group and has an arbitrary uneven structure including a flat surface. The display device according to claim 1, wherein the display device has a display device.

  According to the first and second aspects of the present invention, the appearance of the high-brightness image point observed from the illumination applied to the display device and the positional relationship of the observer is different from that in the prior art, and the position such as illumination is changed Can provide new visual effects.

  According to the third and fourth inventions, the entire image formed by the high-brightness image points can provide an unconventional motion and provide a new visual effect by changing the position of illumination and the like. .

  According to the fifth invention, by combining a portion having a new visual effect arising from the structure in which the concavo-convex structure of the concentric pattern provided in the Fresnel lens shape is rearranged, and the image such as the hologram etc., higher decorativeness and The forgery prevention effect can be improved.

It is a top view which shows the example of the uneven | corrugated structure of a Fresnel lens shape. It is sectional drawing which shows the example of the A-A 'cut surface of FIG. It is a top view which shows the example of cell A1 of 1 group before rearrangement. It is a top view which shows the example of 1 group of cells A1 which reversed each cell to the left-right direction. It is a top view which shows the example of 1 group of cells A1 which reversed each cell to the up-down direction. It is a conceptual diagram of cell A group by one cell A1 after a some rearrangement. It is an example of the cell in the overlapping part of 1 group of cells A1 after the rearrangement. It is a conceptual diagram which shows the observation method of a display device. It is a conceptual diagram which shows the example of image formation by several high-intensity image points. It is a sectional view showing an example of transfer foil composition. It is a top view which shows the example of the articles | goods provided with the display device. It is a conceptual diagram which shows the example of the image formation by the conventional Fresnel lens application.

  Hereinafter, embodiments of the present invention will be described in detail. Although the drawings will be referred to as appropriate in the following description, the embodiments described in the drawings are illustrative of the present invention, and the present invention is not limited to the embodiments described in these drawings.

  Note that components having the same or similar function are denoted by the same reference numerals throughout the drawings, and redundant description will be omitted.

  FIG. 1 is a plan view showing an example of a concavo-convex structure of a concentric circle pattern provided in the shape of a Fresnel lens in the present invention, and FIG. 2 is a cross-sectional view showing an example of a cutting plane A-A 'in FIG.

  The concavo-convex structure of the concentric circle pattern provided in a Fresnel shape is provided so that the pitch of each concentric circle changes from the central portion of the concentric circle toward the outer edge thereof.

  FIG. 2 shows an example of a cross-sectional structure of the concavity and convexity structure (10) having a concentric pattern provided in the shape of a Fresnel lens. A relief structure forming layer (12) is provided on a substrate (11), An uneven structure is provided on the surface of (12), and a reflective layer (13) is provided on the surface on which the uneven structure is provided.

  The substrate (11) does not necessarily have to be provided, and may be composed of only the relief structure forming layer (12) and the reflective layer (13), or on the reflective layer (13). A protective layer, an intermediate layer, or an adhesive layer may be provided. A detailed description of the material and the like of each of these layers will be described later.

  Here, although the cross-sectional shape of the concavo-convex structure provided on the surface of the relief structure forming layer (12) may be a blazed shape, it is not necessarily limited to such a shape, including a triangle, a rectangle It may be provided in any shape such as a polygon, a sine curve, a bowl, a spindle, a semicircle, and the like.

(Method and effect of producing a concavo-convex structure for display device)
A method for producing the concavo-convex structure for a display device and the effect of the present invention will be described with reference to FIGS.

  FIG. 3 is a plan view showing a group of cells A1 (20) before rearrangement arranged in a Fresnel lens shape.

  One group of cells A1 (20) before relocation is divided into an arbitrary number of cells (CE), and each cell (CE) has a structure of a part of the concavo-convex structure of a concentric circle pattern provided in a Fresnel lens shape. Each carry.

  Here, although the concavo-convex structure carried in each cell (CE) may be provided in a curved shape as shown in FIG. 3, it is sufficient for the circumference of the concentric circle before relocation. If the cells are divided into cells (CE) of a small size, they may be provided substantially in a straight line.

  Although FIG. 3 shows the boundary of each cell (CE), there is actually no such boundary, and there is only an area divided as each cell (CE).

  Each cell (CE) in one group of cells A1 (20) before relocation is the left or right or the direction of the concavo-convex structure provided in each cell while maintaining its arrangement position, in plan view of each cell Flip up and down and perform relocation.

  FIG. 4 shows an example in which the direction of the concavo-convex structure provided in each cell is reversed in the left-right direction in plan view of each cell, and rearrangement is performed.

  That is, the arrangement position of each cell (CE) in FIG. 3 is held as it is, and only the direction of the concavo-convex structure provided in the cell is in the state of being reversed in the left-right direction.

  Similarly, FIG. 5 shows an example in which rearrangement is performed by reversing the direction of the concavo-convex structure provided in each cell in the vertical direction.

  Although the light condensing effect of the light generated when the reflection layer is provided along the uneven surface having the Fresnel lens structure can not be exhibited by performing the rearrangement in this way, a high brightness image by light diffraction or the like It was found that the point can be observed, and an optical effect different from the image expression using the conventional Fresnel lens structure is generated.

  Specifically, for example, as shown in FIG. 6, a plurality of cells A1 (30) of one group in which each cell is reversed in the left-right direction and rearranged are arranged to constitute a cell A group (60).

  At this time, a plurality of cells A1 (30a, 30b, 30c) of one group are arranged so as to be a pattern such as numbers, characters, symbols, patterns to be expressed.

  Thereby, any of high-brightness image points derived from a plurality of cells A1 (60) including a plurality of cells A1 (30a, 30b, 30c, etc.) including numbers, letters, symbols, patterns, etc. It becomes possible to express a pattern.

  The pattern obtained in this manner is expressed as a pattern that can be moved according to the movement of the light source (51).

  That is, when the position of the observer (52) and the position of the display device (50) are fixed, the cell (CE) that emits observable diffracted light is moved by moving the position of the light source (51). It becomes possible to observe as a movement of a high-luminance image point.

  For example, when the light source (51) is moved to the left and right with respect to the center of the group of cells A1 (30 or 40) after relocation, the high brightness image points also move to the left and right, If you move it, the high brightness image point will also move outward.

  At this time, when rearranging each cell (CE), observation was made while moving the light source (51) by maintaining the arrangement order of each cell (CE) from the center to the outer edge of the concentric circle. It is possible to make the movement of the high-luminance image point at the time a smooth movement without a sense of incongruity.

  Here, as shown in FIG. 6, each group of cells A1 (30a, 30b, 30c) in the group of cells A (60) may overlap with each other to form an overlapping portion (62).

  In FIG. 7, the example of the mode of the cell (CE) in the overlap part (62) is shown. Each cell (CE30a, CE30b, CE30c) carries a concavo-convex structure constituting a group of cells A1 (30a, 30b, 30c) respectively, and the arrangement of each cell is such that each group of cells A1 (30a, 30a, 30c) The rearrangement is performed while maintaining the arrangement of the cells after the rearrangement in 30b and 30c).

  At this time, cells in each group of cells A1 (30a, 30b, 30c) may be arbitrarily thinned out and combined according to the situation, or according to the situation, a single cell Alternatively, the concavo-convex structure corresponding to each group of cells A1 (30a, 30b, 30c) may be mixed, for example, by multiplex synthesis.

  Moreover, although the size of each cell (CE) can use suitably a thing about 10 micrometers or more and 100 micrometers or less per side, it is not necessarily limited to this.

  Each group of cells A1 (for example, 30a, 30b, 30c) provided in the cell A group (60) can form high-intensity image points in two directions caused by ± first-order diffracted light For example, each group of cells A1 (30a, 30b, 30c) such that a high-intensity image point formed by + 1st order diffracted light forms a pattern such as numbers, characters, symbols, patterns, etc. Place the center of rotation.

  The display device (50) provided with the cell group A (60) thus obtained is irradiated with light from a specific direction using a light source (51) as shown in FIG. When (52) is observed, two images of a pattern formed by a high-intensity image point composed of + 1st order diffracted light and a pattern formed by a high brightness image point composed of −1st order diffracted light are observed.

  FIG. 9 shows an example of a pattern that is observed when light is emitted to the display device (50).

  When the display device (50) is irradiated with light from the direction of the light source (51a), two star-shaped picture patterns (± 1st-order diffracted light) along the direction in which the light source and display device are directly opposed 55a) is observed.

  After that, when the light irradiation direction is rotated and irradiated from the direction of the light source (51b), two star-shaped pattern patterns (55b) are similarly observed. When the pattern pattern of the mold is observed to move, the moving direction (53) of the light source and the moving direction (54) of the pattern pattern are observed to be in opposite directions.

  That is, when the light source (51) is moved counterclockwise with respect to the display device (50), the pattern pattern to be observed is moved clockwise.

  This is because, when a similar pattern is expressed by applying a conventional Fresnel lens as shown in FIG. 12, the rotational movement direction (53) of the light source and the movement direction (57) of the pattern pattern are the same. In other words, providing a clearly different visual effect, it is possible to provide an effective means even in the case of performing an authenticity determination or the like.

  Here, the image (55a or 55b) observed by ± first-order diffraction is drawn with a solid line. However, in actuality, for example, a point-drawing diagram in which star-shaped contour portions are connected by high-luminance image points. Can be observed.

  The pattern consisting of the high brightness image points observed in this manner can be moved as described above while maintaining the relative shape according to the movement of the light source (51), for example, the light source (51) By moving away from or closer to the display device 50, it is possible to make the pattern to be observed larger or smaller, and it is also possible to give a change in depth or the like.

  In addition, as described above, the cross-sectional shape of the concavo-convex structure provided in the cell may be any shape such as blazed shape, triangle, rectangle, polygon, sine curve, bowl shape, spindle shape, semicircle, etc. In particular, in the case of a blazed shape, a difference can be provided in the diffracted light intensity of the + order and -order of the diffracted light. For example, only the + 1st order diffracted light is mainly emitted. It is possible to increase the width of expression by diffracted light.

  Therefore, depending on the picture pattern to be displayed, a method may be used such as providing a concavo-convex structure of different cross-sectional shapes in each group of cells A1 (30 or 40).

  Further, in the display device (50) having the cell A group (60), a plurality of cell A groups may be juxtaposed, and furthermore, the cell B at a position adjacent to or separated from the cell A group (60). Groups may be provided.

  The cell group B includes cells (CE) having a concavo-convex structure different from the cell group A (60), and may have a flat surface or an arbitrary concavo-convex structure including a hologram or the like.

  As an arbitrary concavo-convex structure, in addition to a flat surface, a hologram, etc., for example, it is composed of a plurality of concave portions or convex portions, and the shape of the concave portions or convex portions is conical, pyramidal, elliptical conical, cylindrical or cylindrical Prismatic or prismatic, frusto-conical, frusto-pyramid, frusto-elliptic pyramid, cylinder or cylinder with conical shape, prism with prism or square cylinder, hemispherical, semi-elliptic, Convex / concave structure consisting of bullet-shaped, bowl-shaped, etc., concavity / convex structure consisting of a plurality of linear recesses or protrusions with uniform orientation, the height of the protrusions or the depth of the recesses is constant Examples of the concavo-convex structure including a unit having a certain concavo-convex structure can be given, but the invention is not necessarily limited thereto.

(Method for manufacturing display device)
An example of a manufacturing method for manufacturing a display device will be described based on the concavo-convex structure data for a display device including image components obtained as described above.

  First, as a template for forming the concavo-convex structure, a metal stamper is manufactured as follows using photolithography.

  First, a photosensitive resist material is applied to a smooth substrate (a glass substrate is generally used) to form a resist material layer of uniform thickness. A known positive type material or negative type material can be used as the photosensitive resist material. Next, a desired pattern based on the concavo-convex structure data for display devices is drawn on the resist material layer by the charged particle beam.

  Thereafter, the resist material layer is developed to obtain a structure having a desired concavo-convex structure.

  Next, using this structure as an original plate, a metal stamper is produced from this original plate by a method such as electroforming. Note that electroforming is a type of surface treatment technology in which a target of electroforming is immersed in a predetermined aqueous solution and energized to form a metal film on the target by reducing power of electrons.

  By using such a method, the fine concavo-convex structure provided on the surface of the original plate can be accurately replicated. Note that the surface of the object of electroforming needs to be able to be energized, but generally the photosensitive resist does not conduct electricity, so before electroforming, the surface of the structure is subjected to sputtering, vacuum deposition, etc. A metal thin film is provided in advance by vapor deposition or the like.

  Next, using this stamper, the concavo-convex structure is duplicated on the surface of the relief structure forming layer 12. First, a thermoplastic resin, a thermosetting resin, a radiation curable resin, or the like is applied on a light transmitting substrate 11 made of, for example, polycarbonate or polyester. Next, a metal stamper is brought into close contact with the coating film, and after applying heat pressure or irradiation with light or an electron beam in this state, the metal stamper is peeled off from the resin layer to provide an uneven structure. A relief structure forming layer 12 is obtained.

  In the above, although photolithography was used as a method of producing an original plate, a method of processing the surface of a metal or the like by cutting, etching or the like can be adopted as another method. By using such a method, it is possible to directly process the surface of a metal plate, and in this case, it is possible to directly produce a metallic stamper without producing a metallic stamper by a method such as electroforming. .

  Next, a metal such as aluminum or a dielectric or the like is deposited in a single layer or multiple layers on the relief structure forming layer 12 by, for example, a vapor deposition method such as a vacuum evaporation method or sputtering method. ).

  In the case where only a part of the relief structure forming layer (12) is covered with the reflective layer (13), for example, after forming the reflective layer (13) as a continuous film by a vapor deposition method or the like, It can obtain by methods, such as removing the one part. A display device can be manufactured by such a method.

  The display device obtained as described above may be appropriately provided with various known functional layers such as an intermediate layer, a printing layer, a protective layer, an adhesive layer or an adhesive layer, and the display device may be used alone. It may be used, or may be used by being attached to some article.

  As a method of attaching the display device to the article, the display device may be attached as a label via an adhesive or the like, or a display device is produced as a configuration of a transfer foil (70) as illustrated in FIG. The method of sticking to the article may be taken.

  The configuration of the transfer foil (70) illustrated in FIG. 10 is from the peelable protective layer (72), the relief structure forming layer (73), the reflective layer (74), and the adhesive layer (75) on the support (71). It has become.

  Materials used for the substrate (11) or the support (71) include various plastics such as polyethylene terephthalate, polyethylene naphthalate, polycarbonate, triacetyl cellulose, polyvinyl alcohol, acrylic, vinyl chloride, polypropylene, polycycloolefin and polyimide A film can be suitably used.

  The peelable protective layer (72) facilitates peeling of the support (71) at the time of transferring the transfer foil (70) to the transferred body, and also makes the display device transfer layer (76) durable after transfer. It has a role to secure. As a material of the peelable layer protective layer (72), for example, acrylic resin, polyester resin, melamine resin, polycarbonate resin, vinyl resin and the like can be used singly or as a mixture or laminate.

The peelable protective layer (72) may further contain additives such as paraffin wax, carnauba wax, polyethylene wax and silicone.

  For the relief structure forming layers (74, 12), a thermoplastic resin, a thermosetting resin, a radiation curable resin, or the like can be suitably used.

  When a thermoplastic resin is used as the relief structure forming layer (74, 12), for example, an acrylic resin, an epoxy resin, a cellulose resin, a vinyl resin, a mixture thereof, or a copolymer thereof, etc. Can be used.

  In the case of using a thermosetting resin, for example, a urethane resin, a melamine resin, or an epoxy resin formed by a crosslinking reaction between a polyol resin such as an acrylic polyol resin or a polyester polyol resin and an isocyanate compound. Phenolic resins, mixtures thereof, and copolymers thereof can be used.

  Alternatively, when using a radiation curable resin, the radiation curable resin typically contains a polymerizable compound and an initiator.

  As the polymerizable compound, for example, a compound capable of photo radical polymerization is used. Specifically, a monomer, oligomer or polymer having an ethylenically unsaturated bond or an ethylenically unsaturated group can be used. Alternatively, compounds capable of photoradical polymerization include 1,6-hexanediol, neopentyl glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol acrylate, pentaerythritol tetraacrylate, pentaeisitol pentaacrylate and Monomers such as dipentaerythritol hexaacrylate, oligomers such as epoxy acrylate, urethane acrylate and polyester acrylate, or polymers such as urethane modified acrylic resin and epoxy modified acrylic resin may be used.

  When a compound capable of photo radical polymerization is used as the polymerizable compound, a photo radical polymerization initiator can be used as the initiator.

  Examples of the photo radical polymerization initiator include benzoin compounds such as benzoin, benzoin methyl ether and benzoin ethyl ether, anthraquinone compounds such as anthraquinone and methyl anthraquinone, acetophenone, diethoxyacetophenone, benzophenone, hydroxyacetophenone, 1-hydroxy Phenyl ketone compounds such as cyclohexyl phenyl ketone, α-aminoacetophenone and 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one, benzyl dimethyl ketal, thioxanthone, acyl phosphine oxide, or , Michler's ketone and the like can be used.

  Alternatively, a compound capable of photocationic polymerization may be used as the polymerizable compound. As a compound capable of photo cationic polymerization, for example, a monomer, an oligomer or a polymer having an epoxy group, a compound containing an xetane skeleton, or a vinyl ether is used.

  When a compound capable of cationic photopolymerization is used as the polymerizable compound, a cationic photopolymerization initiator is used as the initiator. As this photocationic polymerization initiator, for example, an aromatic diazonium salt, an aromatic iodonium salt, an aromatic sulfonium salt, an aromatic phosphonium salt or a mixed ligand metal salt is used.

  Alternatively, a mixture of a compound capable of radical photopolymerization and a compound capable of cationic photopolymerization may be used as the polymerizable compound.

  In this case, as the initiator, for example, a mixture of a radical photopolymerization initiator and a cationic photopolymerization initiator is used. Alternatively, in this case, a polymerization initiator that can function as an initiator for both photoradical polymerization and photocationic polymerization may be used.

  As such an initiator, for example, an aromatic iodonium salt or an aromatic sulfonium salt is used.

  Note that the ratio of the initiator to the radiation curable resin is, for example, in the range of 0.1 to 15% by weight.

  As an example in which a polymerization initiator is not used, a method of causing a polymerization reaction of a polymerizable compound by electron beam irradiation may be used.

  The radiation curable resin is a sensitizing dye, dye, pigment, polymerization inhibitor, leveling agent, antifoaming agent, sagging inhibitor, adhesion improver, coating surface modifier, plasticizer, nitrogen-containing compound, epoxy resin, etc. It may further contain an additive, a mold release agent, or a combination thereof.

  The radiation curable resin may further contain a non-reactive resin in order to improve its moldability. As the non-reactive resin, for example, the thermoplastic resin, the thermosetting resin, or the like can be used alone or as a mixture.

  As the reflective layer (74, 13), a method of forming a metal thin film of Al, Sn, Cu, Au, Ag, Co or the like by a vacuum evaporation method, a sputtering method, an ion plating method, etc. A method of forming a pattern using an etching method or the like may be used.

Alternatively, as a transparent reflective layer, for example, Sb ₂ S ₃ , Fe ₂ O ₃ , TiO ₂ , CdS, CeO ₂ , ZnS, PbCl ₂ , CdO, Sb ₂ O ₃ , WO ₃ , SiO, Si ₂ O ₃ , A dielectric material comprising a metal compound such as In ₂ O ₃ , PbO, Ta ₂ O ₃ , ZnO, ZrO ₂ , Cd ₂ O ₃ , Al ₂ O ₃ is conventionally known by vacuum evaporation, sputtering, ion plating, etc. A thin film or the like can be used by the method of

  The adhesive layer 75 can be formed using a general heat-sensitive adhesive or pressure-sensitive adhesive.

  As the heat sensitive adhesive, for example, acrylic resin, polyester resin, vinyl chloride-vinyl acetate copolymer resin, ethylene-acrylic acid ester copolymer resin, ethylene-methacrylic acid ester copolymer resin, polyamide resin, polyolefin It can be used alone or as a mixture of two or more of various resins such as base resins, chlorinated polyolefin resins, epoxy resins and urethane resins.

  Examples of the pressure-sensitive adhesive include vinyl chloride-vinyl acetate copolymer, polyester-based polyamide, acrylic-based, butyl rubber-based, natural rubber-based, silicon-based, and polyisobutyl-based adhesives alone, or alkyl methacrylate, vinyl Modified components such as esters, acrylonitrile, styrene, vinyl monomers, unsaturated carboxylic acids, hydroxyl group-containing monomers, acrylonitrile, etc., adhesiveness imparting agents, fillers, softeners, heat stabilizers, oxidation prevention What added additives, such as an agent, a polymerization initiator, a hardening | curing agent, and a hardening accelerator, as needed can be used.

Examples of the adhesion-imparting agent include rosin resins, terpene phenol resins, terpene resins, aromatic hydrocarbon-modified terpene resins, petroleum resins, coumarone-indene resins, styrene resins, phenol resins, xylene resins, and the like.

  Examples of the filler include zinc white, titanium oxide, silica, calcium carbonate, and barium sulfate.

  As the softener, process oil, liquid rubber, plasticizer and the like can be mentioned. Examples of the heat stabilizer include benzophenone, benzotriazole, and hindered amine, and examples of the antioxidant include anilide, phenol, phosphite, and thioester.

  In FIG. 11, as an example of an article (80) with a display device using the transfer foil (70) obtained as described above, a display device transfer layer ( 76) was illustrated.

  The display device transfer layer (76) has a portion having an optical effect according to the movement of the light source (51) consisting of the cell A group (60) and a cell B group (82) having a hologram image. .

  As a result, while using the same manufacturing process as the anti-counterfeit medium having the existing diffraction grating structure, an article (80) with a display device having high decorativeness and high anti-counterfeit property is obtained which has an unprecedented optical effect. be able to.

DESCRIPTION OF SYMBOLS 10 ... Fresnel lens-shaped uneven structure 11 ... Base material 12 ... Relief structure formation layer 13 ... Reflective layer 20 ... 1 group of cell A1 before rearrangement
30 ... A group of cells A1 in which each cell is horizontally inverted
30a ... A group of cells A1a after relocation
30b ... 1 group of cells A1b after relocation
30c ... 1 group of cells A1c after relocation
40 ... A group of cells A1 with each cell upside down
DESCRIPTION OF SYMBOLS 50 ... Display device 51, 51a, 51b ... Light source 52 ... Observer 53 ... Light source moving direction 54 ... High luminance image point moving direction (the direction opposite to the light source moving direction)
55a, 55b ... formed image by high brightness image point 56 ... display device applying conventional Fresnel lens 57 ... moving direction of high brightness image point (same direction as moving direction of light source)
DESCRIPTION OF SYMBOLS 60 ... Cell A group 62 ... Overlap part 70 ... Transfer foil 71 ... Support body 72 ... Peelable protective layer 73 ... Relief structure formation layer 74 ... Reflection layer 75 ... Adhesive layer 76 ... Display device transfer layer 80 ... Article with display device 81 ... Transferred material 82 ... Cell B group CE ... Cell CE30a ... One cell of one group of cells A1a after relocation CE30b ... One cell of one group of cells A1b after relocation CE30c ... One group after relocation One cell of cell A1c

Claims (5)

A display device having at least a relief structure forming layer having a concavo-convex structure on a surface and a reflective layer formed to cover at least a part of the surface on which the concavo-convex structure is formed,
The concavo-convex structure comprises a plurality of arranged cells,
At least a part of the plurality of cells is a cell A group having at least a concavo-convex structure that is a partial structure of a concavo-convex pattern provided in a Fresnel lens shape,
The group of cells A is composed of two or more groups of cells A1, and each group of cells A1 has a concavo-convex structure obtained by dividing the concavo-convex structure of a concentric pattern provided in a single Fresnel lens shape into an arbitrary number, Each cell at least carries
While each cell in the group of cells A1 maintains an arrangement position that can constitute the concentric pattern provided in the Fresnel shape, the orientation direction of the concavo-convex structure provided in each cell is determined in each cell plan view. A display device which is reversed and rearranged in either the left or right direction or the up and down direction.   The rearrangement of each cell in the group of cells A1 according to claim 1, wherein each cell in at least one group of cells A1 is inverted in the same direction and rearranged. Display device. In the cell A group consisting of the two or more groups of cells A1, the central positions of the concentric circle patterns of the group of cells A1 are arranged at different positions, respectively.
The display device according to claim 1, wherein the pattern is arranged so as to be displayable.   When the uneven structure of the concentric pattern provided in the Fresnel lens shape is divided into an arbitrary number, and the rearranged uneven structure is irradiated with light from an arbitrary direction using a light source, the light source and the concentric pattern When a high brightness image point is observed in a direction directly facing the center of the light source, and the light irradiation direction with respect to the display device plane is rotationally moved, the high brightness in the rotation direction opposite to the rotation direction of the light source The display device according to claim 1, wherein movement of the image point is observed. The plurality of cells further include a cell B group,
The display device according to claim 1, wherein the cell B group has an arbitrary uneven structure including a flat surface, unlike the uneven structure carried by the cell A group.