JP2012185368A - Display body and printed matter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display body that has a forgery prevention effect and able to determine authenticity easy to be visually understood.SOLUTION: The display body has a relief structure formation layer having a directivity light scatter area formed on a transparent substrate. The directivity scatter area of the relief structure formation layer has a spatial frequency component in which a plurality of straight projecting parts and/or recessed parts are different. The spatial frequencies are distributed so as to concentrate in the range of 260/mm to 2200/mm. The total of the spatial frequency components less than 260/mm and more than 2200/mm is 10% or less of the spatial frequency component of 260/mm to 2200/mm.

Description

  The present invention relates to a display body and printed matter.

  It is desired that authentication products such as cash cards, credit cards and passports, and securities such as gift certificates and stock certificates are difficult to counterfeit. Conventionally, such an article is attached with a label that makes it difficult to counterfeit or counterfeit and easily distinguish it from counterfeit or counterfeit.

  In recent years, the distribution of counterfeit products has been regarded as a problem for items other than certified items and securities. Therefore, the opportunity to apply the above-described anti-counterfeiting technology to such articles as well as certified articles and securities is increasing.

  Patent Document 1 describes a display including a light scattering pattern and a diffraction grating pattern. In this display, a light scattering pattern and a diffraction grating pattern formed by fine irregularities on the surface are divided for each pixel, and both patterns are lit in white to be visually recognized.

  Since the display body displays an image using diffracted light, it cannot be counterfeited using a printing technique or an electrophotographic technique. Therefore, if this display is attached to an article as a label for authenticity determination, it is possible to confirm that the article is genuine by viewing the image displayed by this label. As a result, an article with this label attached is less likely to be counterfeited than an article without this label attached.

  However, in the display of Patent Document 1, iridescent light peculiar to the diffraction grating is observed, making it difficult to differentiate it from the prior art. In addition, even fine uneven structures may be duplicated due to the recent advancement of counterfeiting techniques. Therefore, the anti-counterfeit effect of such a display body is decreasing.

  The “anti-counterfeit effect” means that forgery or imitation is difficult, and that it is easy to distinguish from counterfeit or counterfeit products.

JP 2007-219551 A

  An object of this invention is to provide the display body which enabled bright white expression in the range normally observed, and printed matter provided with this display body.

In order to solve the above-mentioned problems, according to the first aspect of the present invention, a transparent base material is provided on at least one surface of the transparent base material, on a surface opposite to the surface in contact with the base material. A relief structure molding layer having a directional scattering region composed of a plurality of linear protrusions and / or depressions, and a light reflection layer provided on the surface of the relief structure molding layer having the directional scattering region. A display body,
The plurality of linear protrusions and / or recesses forming the directional scattering region have a plurality of different spatial frequency components in the range of 260 lines / mm to 2200 lines / mm, and less than 260 lines / mm and 2200. The total amount of the spatial frequency component exceeding the line / mm is 10% or less of the spatial frequency component in the range of 260 line / mm to 2200 line / mm.

  According to a second aspect of the present invention, the plurality of linear convex portions and / or concave portions are in the range of 260 lines / mm to 2200 lines / mm, and spatial frequency components are evenly distributed. A display body according to the first aspect is provided.

  According to a third aspect of the present invention, the plurality of linear convex portions and / or concave portions have a peak value in a spatial frequency component in a range of 260 / mm to 2200 / mm, and the spatial frequency component Is distributed over 1/2 of the peak value. The display according to the first or second aspect is provided.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the directional scattering region is composed of a plurality of cells, and the length of one side of each cell is 145 μm or less. A display is provided.

  According to a fifth aspect of the present invention, there is provided a display according to the fourth aspect, wherein an image having the plurality of cells as pixels is displayed.

  According to a sixth aspect of the present invention, the directional scattering region includes two directional scattering regions in which the plurality of linear convex portions and / or concave portions are orthogonal to each other. A display body according to any one of the side surfaces is provided.

  According to a seventh aspect of the present invention, the plurality of linear convex portions and / or concave portions are arranged so that the intervals between the convex portions and / or the concave portions are random. A display body according to any one of the six aspects is provided.

  According to an eighth aspect of the present invention, there is provided a printed matter comprising: the display according to any one of the first to seventh aspects; and a base material that supports the display and is printed. Provided.

  According to the present invention, a plurality of linear convex portions and / or concave portions have different spatial frequency components, and the spatial frequencies are concentrated and distributed in a range of 260 lines / mm to 2200 lines / mm, and 260 lines / mm. By limiting the spatial frequency components less than mm and exceeding 2200 lines / mm to a small level, a bright white expression is possible in a range that is normally observed, a high anti-counterfeit effect, and an easy-to-understand authenticity determination display The body can be provided.

  In addition, according to the present invention, it is possible to provide a printed matter having a display body that has a high anti-counterfeiting effect and can be easily determined by an eye.

It is a figure which shows an example of the display body which concerns on embodiment of this invention. It is sectional drawing which follows the X-X 'line | wire of the display body of FIG. FIG. 2 is a schematic diagram showing a directional scattering region in the display body of FIG. It is a figure which shows the positional relationship of a display body and an observer. It is a figure which shows the example of the spatial frequency distribution in the display body which concerns on embodiment of this invention. It is the figure which compared the relative scattered light intensity | strength with respect to the incident angle (alpha) by the difference in the ratio of the spatial frequency component which is less than 260 lines / mm and exceeds 2200 lines / mm. Display body according to an embodiment having a relief structure molding layer formed with a directional scattering region having a spatial frequency component in a range of 260 lines / mm to 2200 lines / mm, a space in a range of 0 lines / mm to 5000 lines / mm It is the figure which compared the relative scattered light intensity with respect to the incident angle (alpha) of the display body which has the relief structure shaping | molding layer which shape | molded the directional scattering area | region which has a frequency component. It is a figure which shows an example of the information printed matter provided with the display body which concerns on embodiment of this invention.

  A preferred embodiment of the present invention will be described. The embodiments described below are preferred specific examples of the present invention, and various technically preferable limitations are given. However, the scope of the present invention is described in the following description to particularly limit the present invention. As long as there is no, it is not restricted to these forms.

  FIG. 1 is a diagram illustrating an example of a display body according to the embodiment. FIG. 2 is a cross-sectional view taken along line X-X ′ of the display body shown in FIG. 1. 3A is a plan view schematically showing an example of the directional scattering region 5, and FIG. 3B is a directional scattering region arranged by being rotated by 90 degrees with respect to FIG. 5 is a plan view schematically showing 5. FIG.

  The display body 1 includes a transparent substrate 2. The relief structure molding layer 3 is provided on one surface of the transparent substrate 2. The relief structure molding layer 3 has a directional scattering region 5 composed of a plurality of linear convex portions and / or concave portions aligned in a direction on the surface opposite to the surface in contact with the transparent substrate 2. The light reflecting layer 4 is provided on the surface having the directional scattering region 5 of the relief structure forming layer 3. In the example shown in FIG. 2, the light reflecting layer 4 is on the back side.

  The directional scattering region 5 shown in FIG. 3 includes a plurality of directional scattering structures 6. Each of these directional scattering structures 6 is a plurality of linear convex portions and / or concave portions that are linear and have the same direction in the directional scattering region 5. That is, in the directional scattering region 5, the directional scattering structures 6 are arranged almost in parallel.

  The transparent substrate 2 is preferably a film or sheet made of a resin having optical transparency such as polyethylene terephthalate (PET), polycarbonate (PC), triacetyl cellulose (TAC). An inorganic material such as glass can be used as the material of the transparent substrate 2.

  The transparent substrate 2 may have a single layer structure or a multilayer structure. Furthermore, the transparent substrate 2 may be subjected to treatments such as antireflection treatment, low antireflection treatment, hard coat treatment, antistatic treatment and antifouling treatment.

  As a material for the relief structure forming layer 3, for example, a resin having optical transparency can be used. Examples of the resin include a thermoplastic resin, a thermosetting resin, or a photocurable resin. By using such a resin, the relief structure forming layer 3 including the directional scattering region 5 composed of a plurality of linear concave portions or convex portions is easily formed on one surface (surface) by transfer using the original plate. be able to. The materials of the transparent substrate 2 and the relief structure forming layer 3 may be the same or different.

  The light reflecting layer 4 plays a role of increasing the reflectance at the interface with the relief structure of the relief structure forming layer 3. As the material of the light reflecting layer 4, for example, a metal material such as aluminum (Al) or silver (Ag) can be used. The material of the light reflection layer 4 may be a transparent material having a refractive index different from that of the relief structure molding layer 3 such as a dielectric material, in addition to a metal material. The light reflecting layer is not limited to a single layer, and may be a multilayer film.

  The light reflecting layer 4 made of metal or dielectric can be formed by a thin film forming technique such as vapor deposition or sputtering. Furthermore, the region where the light reflecting layer 4 exists can be spatially distributed, and the design can be expressed from this distribution state.

  The observation of the display body 1 including the directional scattering region 5 including the plurality of directional scattering structures 6 shown in FIGS. 1 and 3 will be described in detail later.

  Next, the plurality of linear convex portions and / or concave portions forming the directional scattering region 5 will be described in detail with reference to the drawings.

  FIG. 4 is a diagram illustrating a positional relationship between the display body 1 and the observer 8. When the display body 1 is observed as shown in FIG. 4, it is required that stable white display is possible in a wide viewing area even if the observation conditions such as the angle of the illumination light 7 and the observation position are different.

  However, actually, the light emitted in the vicinity of the illumination light 7 is not observed only under extremely inclined observation conditions, and the component of the light emitted in the vicinity of the regular reflection light is a light having a strong regular reflection light. Since the observer 8 is dazzling, it is not suitable for observation.

  The display according to the embodiment limits the light unsuitable for the above-mentioned observation by optimizing the spatial frequency component of the plurality of linear convex portions and / or concave portions, and is a range suitable for normal observation. The observation light can be emitted in a concentrated manner.

  The plurality of linear convex portions and / or concave portions have a plurality of different spatial frequency components, and the wavelength of the emitted light and the emission angle of the diffracted light can be controlled by each spatial frequency component. In order for the display 1 to express white, a directional scattering region 5 having at least three types of spatial frequency components corresponding to the three wavelengths R, G, and B is required.

  When white light is incident on the normal line 11 at an incident angle α as shown in FIG. 4 in a plurality of linear convex portions and / or concave portions, light of wavelength λ is emitted in the direction of angle β. The spatial frequency d can be calculated by the following equation.

d = (sin α−sin β) / λ
For example, when white light is incident on the display body 1 at an incident angle α = 0 degree, light having wavelengths of R (λ = 650 nm), G (λ = 550 nm), and B (λ = 450 nm) are emitted at an emission angle β. = Spatial frequency d for emitting in the direction of 80 degrees is calculated. The spatial frequency d for emitting R is 1515 lines / mm, the spatial frequency d for emitting G is 1792 lines / mm, the spatial frequency d for emitting B is 2192 lines / mm, and R, G, and B have three wavelengths. It can be seen that different spatial frequency components are necessary to emit white and express white.

  According to the above consideration, when white light is incident at an incident angle α = 0 degree with a spatial frequency component exceeding 2200 lines / mm, R (λ = 650 nm), G (λ = 550 nm), B (λ = 450 nm) ) The light of each wavelength is emitted in a steep angle range of ± 80 degrees or more from the normal line. When trying to observe such light, the display body 1 is extremely tilted, making it difficult to see the image.

  Further, when white light is incident at an incident angle α = 0 degree with a spatial frequency component of less than 260 lines / mm, each wavelength of R (λ = 650 nm), G (λ = 550 nm), and B (λ = 450 nm) Will be emitted within a range of ± 10 degrees from the normal. As a result, when the display 1 is observed, the brightness of the specularly reflected light component is strong, so that the image is difficult to distinguish and is not suitable for observation.

  The directional scattering region formed in the display according to the embodiment includes different spatial frequency components in the range of 260 lines / mm to 2200 lines / mm, so that the incident angle α = 0 degrees (the normal line of the display body). When the white light is incident in the direction), light of each wavelength of R, G, and B can be simultaneously observed within a range of ± 80 degrees from the normal line.

  If the intensity of the incident light is constant, the observer can observe a brighter image by emitting light in an angle range suitable for observation.

  As described above, the spatial frequency component of less than 260 lines / mm and the spatial frequency component of more than 2200 lines / mm are components that make it difficult to see an image when the display body is observed, and hinder the observation. For this reason, it is appropriate to reduce such spatial frequency components in the directional scattering region.

  In the display according to the embodiment, the total amount of spatial frequency components less than 260 lines / mm and spatial frequency components exceeding 2200 lines / mm is set to 10% or less of the spatial frequency components of 260 lines / mm to 2200 lines / mm, and By making the component distribution uniform within the range of the spatial frequency component of 260 lines / mm to 2200 lines / mm, the observer always observes light of each wavelength of R, G, and B stably. This makes it possible to realize a stable white expression even with a slight change in viewing conditions.

  For example, with the distribution shown in the example of FIG. 5A, the observer can observe stable white light with little color change in the emission light range γ as shown in FIG. 4 described above. It becomes.

  If the distribution is as shown in FIG. 5B, the observer can observe sufficiently stable white light within the emission light range γ shown in FIG. 4 described above.

A distribution as shown in the example of FIG. In FIG. 5A, when f (x) is a spatial frequency distribution, the spatial frequency component of 260 lines / mm to 2200 lines / mm means an integrated value of the spatial frequency components in the range. It can be expressed by equation (1).

Similarly, the spatial frequency component of 0 to <260 lines / mm is expressed by the following formula (2), and the spatial frequency component of> 2200 lines / mm is expressed by the following formula (3).

  In the embodiment, “the total amount of spatial frequency components less than 260 / mm and greater than 2200 / mm is 10% or less of the spatial frequency components in the range of 260 / mm to 2200 / mm” means “[Fβ ( x) + Fγ (x)] / Fα (x) means 0.1 or less (10% or less in percentage).

  As the value of [Fβ (x) + Fγ (x)] / Fα (x) increases, the light emitted at an angle that hinders observation of 80 degrees or more from the vicinity of the specular reflection light or the normal increases. Light emitted into the normal observation range is reduced, resulting in a dark image.

  FIG. 6 shows a sample in which the ratio of spatial frequency components in a range of less than 60 lines / mm and over 2220 lines / mm is different, for example, a total amount of spatial frequency components of less than 260 lines / mm and exceeding 2200 lines / mm is 10% ( 6 shows the result of comparison of the scattered light intensities of a characteristic line A) in FIG. 6 and a sample having the same total amount of 15% (characteristic line B in FIG. 6). In the arrangement shown in FIG. 4 described above, the scattered light intensity is a scattered light at the position of the observer 8 when a white surface light source is used as the illumination light 7 and the incident angle α is changed from the normal direction of the sample. The intensity is shown as relative scattered light intensity, which is a relative ratio to the standard white plate.

  As is apparent from FIG. 6, when the total amount of the spatial frequency components is 15%, the scattered light intensity at a location close to the specularly reflected light component having an incident angle of 0 degrees to 20 degrees is the total amount of the spatial frequency components. It turns out that it is increasing compared with the case of 10%. Further, when the total amount of the spatial frequency components is 15%, the scattered light emitted at a steep angle of 80 degrees or more is increased as compared with the case where the total amount of the spatial frequency components is 10%. I understand.

  From these facts, when the total amount of spatial frequency components less than 260 lines / mm and exceeding 2200 lines / mm increases by more than 10%, it is emitted at an angle that is normally observed (about 20 degrees to 70 degrees). Scattered light is reduced and the observed image becomes darker.

  Actually, if the component distribution is in the range of 1/2 or more of the peak value in the spatial frequency range of 260 lines / mm to 2200 lines / mm, light of each wavelength of R, G, and B is sufficiently obtained. It is possible to emit stably, and the observer can visually recognize a stable white color.

  Next, observation of the display body 1 including the directional scattering region 5 including the plurality of directional scattering structures 6 shown in FIGS. 1 and 3 will be described in detail. In the directional scattering region 5, the directional scattering structures 6 may not be arranged completely in parallel. As long as the directional scattering region 5 has sufficient light scattering ability anisotropy, in the directional scattering region 5, for example, the longitudinal direction of some directional scattering structures 6 and the other partial directional scattering. The longitudinal direction of the structure 6 may intersect. Hereinafter, of the directions parallel to the main surface of the directional scattering region 5, the direction in which the directional scattering region 5 exhibits the minimum light scattering ability is referred to as “orientation direction”, and the directional scattering region 5 has the maximum light scattering ability. The direction indicating is called “light scattering axis”.

  In the directional scattering region 5 shown in FIG. 3, the direction indicated by the arrow 10 is the orientation direction, and the direction indicated by the arrow 9 is the light scattering axis. For example, when the directional scattering region 5 is illuminated from an oblique direction perpendicular to the orientation direction 10 and the directional scattering region 5 is observed from the front, the directional scattering region 5 is relatively bright due to its high light scattering ability. appear. On the other hand, when the directional scattering region 5 is illuminated from an oblique direction perpendicular to the light scattering axis 9 and the directional scattering region 5 is observed from the front, the directional scattering region 5 is relatively dark due to its low light scattering ability. appear.

  For this reason, for example, when the directional scattering region 5 is illuminated from an oblique direction and observed from the front, the brightness changes when the directional scattering region 5 is rotated around the normal direction. To do. Therefore, for example, when the same structure is adopted for the directional scattering region 1a and the directional scattering region 1b shown in FIG. 1 and only the direction of the light scattering axis is different between the regions 1a and 1b, the region 1a is the most. Region 1b appears dark when it appears bright, and 1b appears bright when region 1a appears darkest. When the area 1b looks brightest, the area 1a looks dark. When the area 1b looks darkest, the area 1a looks bright.

  That is, by making the light scattering axis 9 different between the region 1a and the region 1b, a brightness difference can be generated between them. Thereby, an image can be displayed. In particular, the images displayed in the respective regions can be observed under different observation conditions by making the light scattering axes 9 of the regions 1a and 1b orthogonal to each other or by sufficiently increasing the respective light scattering anisotropy.

  The display body 1 shown in FIG. 1 includes a character portion of “TOP” composed of a region 1a shown in FIG. 3A and a region 1b shown in FIG. 9 is almost orthogonal. As a result, at a certain observation position, the character “TOP” appears bright and the outer portion of the character appears dark.

  Further, when the display 1 is rotated 90 degrees, the character “TOP” appears dark and the outer part of the character appears bright. Therefore, the observer observes an image obtained by inverting the negative-positive image by rotating the display 1. Can do.

  In the display body 1 according to the embodiment, the directional scattering structure of the directional scattering region 5 (consisting of a plurality of linear convex portions and / or concave portions) has a spatial frequency component in a range of 260 lines / mm to 2200 lines / mm. Because it contains a large amount (exceeding 90%), a bright image can be observed in the normal observation angle range, so the contrast of the negative / positive image is high and the accuracy of authenticity determination is improved when the display body 1 is used as a security medium. it can.

  The display body 1 according to the embodiment has a plurality of linear convex portions and / or concave portions forming the directional scattering region 5 having a plurality of different spatial frequency components appropriately, so that incident white light is converted into a plurality of visible wavelengths. As a result, a scattered light with directivity is realized by the function of diffracting white light. In the display body 1 according to the embodiment, the scattering intensity of the relief structure forming layer 3 having the directional scattering region 5 will be specifically described with reference to FIG.

  FIG. 7 shows the relationship between the incident angle (α) to the relief structure forming layer formed with the directional scattering region including spatial frequency components in different ranges and the observed relative scattered light intensity. In FIG. 7, a change in relative scattered light intensity observed from a relief structure molding layer in which a directional scattering region including a spatial frequency component of 260 lines / mm to 2200 lines / mm is formed is shown as a characteristic line A. For comparison, a characteristic line B shows a change in relative scattered light intensity observed from a relief structure molding layer in which a directional scattering region including a spatial frequency component of 0 line / mm to 5000 line / mm is formed.

  The relative scattered light intensity is scattered at the position of the observer 8 when a white surface light source is used as the illumination light 7 and the incident angle α is changed from the normal direction of the display body 1 in the arrangement shown in FIG. The light intensity is relative to the standard white plate.

  That is, when the scattered light intensity of the relief structure forming layer 3 when the display body 1 shown in FIG. 4 is irradiated with the illumination light 7 at the incident angle α is IAα and the scattered light intensity from the standard white plate is IRα, the incident angle. The relative scattered light intensity RAα of the relief structure molding layer 3 at α can be obtained from the following equation.

RAα = IAα / IRα
The relative scattered light intensity (characteristic line A) of the relief structure forming layer 3 in which the directional scattering region including the spatial frequency component of 260 lines / mm to 2200 lines / mm is formed like the display body according to the embodiment shown in FIG. ), Although the relative scattered light intensity decreases as the incident angle α becomes steep, the relative scattered light intensity shows a high value even at a steep angle of the incident angle of 80 degrees. That is, the relative scattered light intensity of the relief structure molding layer 3 was formed as a directional scattering region including a spatial frequency component of 0 / mm to 5000 / mm in the range where the incident angle α is not less than 10 degrees and not more than 80 degrees. It can be seen that the relative scattered light intensity shows a high value of 2.5 or more compared to the relative scattered light intensity (characteristic line B) of the relief structure molding layer. Since the standard white plate has a luminance rate of 90% or more in the entire visible wavelength region, if the relative scattered light intensity of the relief structure molding layer 3 is 2.5 or more like the display body according to the embodiment, the observer can Since bright scattered light with sufficiently high luminance can be observed, a bright display body can be obtained.

  In FIG. 1 described above, the two directional scattering regions 1a and 1b whose light scattering axes are orthogonal to each other are disposed, but three or more directional scattering regions having different light scattering axes may be disposed.

  If three or more light scattering regions having different light scattering axes are arranged as described above, for example, gradation display may be performed, or the change of the image may be made more complicated as the orientation of the display body 1 is changed. It becomes possible. For example, it is possible to change the image in an animated manner by changing the orientation of the display body 1.

  The larger the width of the directional scattering structure 6, the smaller the light scattering ability in the direction of the light scattering axis 9. On the other hand, when the directional scattering structure 6 is lengthened, the light scattering ability in the orientation direction 10 is reduced.

  The shape of the directional scattering structure 6 may be the same in one directional scattering region 5. One directional scattering region 5 may include a plurality of convex portions and / or concave portions having different shapes.

  In the directional scattering region 5 including only the directional scattering structure 6 having the same shape, the light scattering ability can be easily designed. Such a directional scattering region 5 can be easily formed with high accuracy using a microfabrication apparatus such as an electron beam drawing apparatus or a stepper.

  On the other hand, according to the directional scattering region 5 including the directional scattering structures 6 having different shapes, scattered light having a gentle light intensity distribution can be obtained over a wide angular range. Accordingly, the change in brightness depending on the observation position is small, and stable white color can be displayed.

  Further, the higher the degree of orientational order of the directional scattering structure 6, the greater the light scattering ability anisotropy of the directional scattering region 5.

  In the directional scattering region 5, the intervals between the plurality of linear convex portions and / or concave portions may be regularly arranged to some extent, or may be randomly arranged. For example, if the interval (spatial frequency d) in the direction parallel to the light scattering axis 9 is random in a plurality of linear convex portions and / or concave portions, the light intensity distribution of the scattered light in the direction perpendicular to the orientation direction 10 is obtained. It becomes gentle. Therefore, changes in whiteness and brightness according to the observation angle are suppressed.

  When the spatial frequency is in the range of 260 lines / mm to 2200 lines / mm, when the directional scattering region 5 is composed of a plurality of cells, the size of one cell can be about 145 μm.

Thus, by making the cell size 145 μm or less, when an observer with a visual acuity of 1.0 observes the display body 1 from a distance of 50 cm, the size cannot be distinguished, that is, below the resolution of the human eye. The image can be displayed with fine details. As a result, a sufficiently high-definition image can be displayed. The display body 1 according to the above-described embodiment can be attached to an article such as a printed matter and used as a forgery prevention medium. FIG. 8 is a plan view schematically showing an example of an article supporting a display body.

  An article 21 shown in FIG. 8 is a magnetic card. This article 21 includes a base material 22 on which printing has been performed, and a display body 1 supported by the base material 22. The display body 1 constituting the article 21 is the display body described above.

  The article 21 shown in FIG. 8 includes a plurality of images having different optical characteristics, that is, an image of the display body 1 having a visual effect by the diffraction grating region and a visual effect by a plurality of light scattering regions, and an image by printing applied to the card. Since the display image composed of the elements can be visually confirmed, it is easy to distinguish from the non-genuine product. Since counterfeiting and imitation of the display body 1 is difficult as described above, an anti-counterfeiting effect on the article can be expected.

  The article 21 shown in FIG. 8 is one form of an application example of the display body 1 according to the embodiment, and the application form of the display body 1 is not limited to the form of FIG. For example, when the display body according to the embodiment is applied to an article such as a printed material, the display body may be cut into paper in a form called a thread (also called a strip, a filament, a thread, a safety band, or the like). Moreover, since the display body 1 which concerns on embodiment can contain an adhesion layer, it can be easily affixed and applied to various articles | goods.

  DESCRIPTION OF SYMBOLS 1 ... Display body, 2 ... Transparent base material, 3 ... Relief structure molding layer, 4 ... Light reflection layer, 5 ... Directional scattering area, 6 ... Directional scattering structure, 7 ... Illumination light, 8 ... Observer, 9 DESCRIPTION OF SYMBOLS ... Light scattering axis, 10 ... Orientation axis, 11 ... Normal, 12 ... Regular reflection light component, 21 ... Article, 22 ... Base material.

Claims (8)

A directional scattering region comprising a transparent base material and a plurality of linear convex portions and / or concave portions provided on at least one surface of the transparent base material and on a surface opposite to the surface in contact with the base material A relief structure molding layer having a light reflecting layer provided on a surface having a directional scattering region of the relief structure molding layer,
The plurality of linear protrusions and / or recesses forming the directional scattering region have a plurality of different spatial frequency components in the range of 260 lines / mm to 2200 lines / mm, and less than 260 lines / mm and 2200. The total amount of the spatial frequency component exceeding the line / mm is 10% or less of the spatial frequency component in the range of 260 line / mm to 2200 line / mm.   The display body according to claim 1, wherein the plurality of linear convex portions and / or concave portions have a spatial frequency component evenly distributed in a range of 260 lines / mm to 2200 lines / mm.   The plurality of linear convex portions and / or concave portions have a peak value in a spatial frequency component in a range of 260 / mm to 2200 / mm, and the spatial frequency component is ½ of the peak value. 3. The display body according to claim 1, wherein the display body is distributed as described above.   The display body according to claim 1, wherein the directional scattering region includes a plurality of cells, and a length of one side of each cell is 145 μm or less.   The display body according to claim 4, wherein an image using the plurality of cells as pixels is displayed.   The display body according to claim 1, wherein the directional scattering region includes two directional scattering regions in which the plurality of linear convex portions and / or concave portions are orthogonal to each other.   The display body according to any one of claims 1 to 6, wherein the plurality of linear convex portions and / or concave portions are arranged so that intervals between the convex portions and / or the concave portions are random. .   A printed matter comprising: the display body according to any one of claims 1 to 7; and a base material on which the display body is supported and printed.

Images