Printed matter and display device

Abstract

To provide a printed matter and a display device which can clearly display both a pattern and an image.SOLUTION: A printed matter 2 is arranged at a position facing a light source 3. The printed matter 2 includes: a translucent base material 4; a pattern printing layer 5 arranged on one surface 4b of the translucent base material 4; and a transmission / reflection layer 10 arranged on an opposite surface 5b to the translucent base material 4 in the patter printing layer 5. The transmission / reflection layer 10 transmits a part of light from the light source 3 and reflects a part of light from the opposite side to the light source 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to printed matter and display devices.

Background Art

[0002] Patent Document 1 and Patent Document 2 describe a decorative sheet located in front of a display medium. The decorative sheet has a transparent sheet substrate, a pattern layer, and a concealing layer. The concealing layer is printed using an inkjet device and is printed with a white ink containing titanium oxide. The concealing layer is formed by applying solid white printing to the back surface of the pattern layer.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] As the aforementioned display medium, a black monitor may be used. When a decorative sheet having a pattern layer and a transparent sheet substrate is attached to a black monitor, the pattern of the pattern layer may become unclear due to the influence of the black color of the monitor. On the other hand, when the white color of the concealing color is strong, it may be impossible to clearly display an image by the light emitted from a light source such as a monitor.

[0005] An object of the present disclosure is to provide a printed matter and a display device capable of clearly displaying both patterns and images.

Means for Solving the Problems

[0006] (1) The printed matter according to the present disclosure is a printed matter disposed at a position facing a light source. The printed matter includes a translucent substrate, a pattern printing layer provided on one surface of the translucent substrate, and a transmissive reflective layer provided on the surface of the pattern printing layer opposite to the translucent substrate. The transmissive reflective layer transmits a part of the light from the light source and reflects a part of the light from the side opposite to the light source.

[0007] This printed matter has a translucent substrate, a pattern printing layer, and a transmissive reflective layer. The transmissive reflective layer is formed on the surface of the pattern printing layer opposite to the translucent substrate. The transmissive reflective layer reflects a part of the light from the side opposite to the light source. By the transmissive reflective layer reflecting a part of the light from the side opposite to the light source, the pattern printed on the pattern printing layer can be clearly displayed. The transmissive reflective layer transmits a part of the light from the light source. By the transmissive reflective layer transmitting a part of the light from the light source, the image formed by the light emitted from the light source can be clearly displayed. Therefore, both the pattern and the image can be clearly displayed.

[0008] (2) In the above (1), the transmissive reflective layer may have a plurality of color dots, and each of the plurality of color dots may include a binder and a plurality of color pigment chips dispersed inside the binder. The plurality of color pigment chips may be interference pigments that generate interference light.

[0009] (3) In the above (1) or (2), the transmissive reflective layer may be a pearl printing layer containing a pearl pigment.

[0010] (4) In the above (1), the transmissive reflective layer may be a reflective film that transmits a part of the light from the light source and reflects a part of the light from the side opposite to the light source.

[0011] (5) In the above (1), the transmissive reflective layer may be configured by laminating a plurality of resin layers.

[0012] (6) The display device according to the present disclosure includes the aforementioned printed matter and a light source. Since this display device includes the aforementioned printed matter, the same effects as described above can be obtained from this display device.

Effects of the Invention

[0013] According to the present disclosure, both patterns and images can be clearly displayed.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0015] Hereinafter, embodiments of the printed matter and the display device according to the present disclosure will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant descriptions are appropriately omitted. The drawings may be drawn with some parts simplified or exaggerated for ease of understanding, and the dimensional ratios and the like are not limited to the descriptions in the drawings.

[0016] (First Embodiment) FIG. 1 is a cross-sectional view schematically showing a display device according to the first embodiment. As shown in FIG. 1, as an example, the display device 1 includes a printed matter 2 and a light source 3. The printed matter 2 is a sheet for expressing a pattern. The printed matter 2 includes a translucent base material 4, a pattern printing layer 5, and a transmissive-reflective layer 10. The printed matter 2 is disposed at a position facing the light source 3. The printed matter 2 is provided in front of the light source 3 (between the viewer and the light source 3, above in FIG. 1).

[0017] The light source 3 is, for example, a display device. The light source 3 has a power supply, and the power supply can be switched between ON and OFF. As an example, the light source 3 exhibits black when the power supply is OFF (not irradiating light). The printed matter 2 has total light transmittance. Therefore, when the power supply of the light source 3 is ON (the light source 3 is irradiating light), the viewer can visually recognize the light from the light source 3 transmitted through the printed matter 2. When the power supply of the light source 3 is OFF, the viewer can visually recognize the pattern represented by the printed matter 2.

[0018] The visible light transmittance of the printed matter 2 may be 10% or more and 70% or less. By the visible light transmittance of the printed matter 2 being 10% or more, the light from the light source 3 can be easily passed through the printed matter 2. By the visible light transmittance of the printed matter 2 being 70% or less, the pattern of the pattern printing layer 5 can be clearly displayed. The transmittance means, for example, a value obtained by measuring the transmittance using a spectrophotometer (for example, UV-2100, manufactured by Shimadzu Corporation).

[0019] The light-transmissive substrate 4 is a substrate having visible light transmittance. The light-transmissive substrate 4 is a transparent substrate. The light-transmissive substrate 4 is, for example, made of resin. For example, the light-transmissive substrate 4 is composed of a material containing any one of PET, PMMA, polyethylene, polypropylene, and nylon. The light-transmissive substrate 4 may be a glass substrate. The thickness of the light-transmissive substrate 4 is, for example, 25 μm or more and 250 μm or less. When the light-transmissive substrate 4 is a glass substrate, the thickness of the light-transmissive substrate 4 may be 1 mm or more and 10 mm or less. Note that the printed matter 2 may have a surface protection layer located on the surface side of the light-transmissive substrate 4 (the side opposite to the pattern printing layer 5).

[0020] The pattern printing layer 5 is located on the side opposite to the light source 3 when viewed from the transmissive reflective layer 10. The pattern printing layer 5 is a layer that represents the pattern of the printed matter 2. That is, the pattern printing layer 5 is a layer in which the pattern represented by the printed matter 2 is formed. The pattern of the pattern printing layer 5 is the pattern that appears as the surface of the printed matter 2 when the power supply of the light source 3 is OFF, and is, for example, a wood grain pattern or an abstract pattern. The pattern printing layer 5 is provided on one surface 4b of the light-transmissive base material 4.

[0021] The pattern printing layer 5 is formed on the surface 4b, for example, by inkjet printing, screen printing, gravure printing, or offset printing. When the pattern printing layer 5 is printed by inkjet printing, for example, the pattern is printed on the pattern printing layer 5 with cyan, magenta, yellow, and black toners. For example, the thickness of the pattern printing layer 5 is 1 μm or more and 30 μm or less. The pattern printing layer 5 may contain a curing agent. In this case, the heat resistance and adhesion of the pattern printing layer 5 can be improved.

[0022] As described above, when the light source 3 exhibits black when the power is OFF, the pattern of the pattern printing layer 5 may be difficult to see due to the influence of the black color of the light source 3. To suppress this, the printed matter 2 and the display device 1 according to the present embodiment have a transmissive reflective layer 10. By having the transmissive reflective layer 10, the influence of the black color of the light source 3 can be suppressed, and the pattern of the pattern printing layer 5 can be made clear. The transmissive reflective layer 10 is formed, for example, by overprinting (lining). The transmissive reflective layer 10 is provided on the surface 5b opposite to the light-transmissive base material 4 of the pattern printing layer 5.

[0023] The transmissive reflective layer 10 transmits a part of the light from the light source 3 (lower side in FIG. 1). The transmissive reflective layer 10 reflects a part of the light from the side opposite to the light source 3 (upper side in FIG. 1). The transmissive reflective layer 10 may have a function of attenuating the light from the front side of the viewing point that passes through the printed matter 2. The thickness of the transmissive reflective layer 10 is, for example, 7 μm or more and 30 μm or less. Note that the transmissive reflective layer 10 may contain a curing agent. In this case, the heat resistance and adhesion of the transmissive reflective layer 10 can be improved.

[0024] Figure 2 is a cross-sectional view schematically showing the details of the structure of the transmissive reflective layer 10. As shown in FIGS. 1 and 2, the transmissive reflective layer 10 has a plurality of color dots 11. For example, the transmissive reflective layer 10 is a color pattern layer composed of a plurality of color dots 11. A "dot" is a point that constitutes an element of a printed image. The shape of the dot is, for example, circular. However, the shape of the dot may be, for example, polygonal and is not particularly limited.

[0025] The color dot 11 includes a binder 12 and a color pigment chip 13. Each color dot 11 includes a binder 12 and a color pigment chip 13. The color pigment chip 13 is dispersed inside the binder 12. The content rate of the color pigment chip 13 in the binder 12 is, for example, 0.5 parts by weight or more and 20 parts by weight or less when the binder 12 is 100 parts by weight. The binder 12 is composed of at least one of a vinyl resin, an acrylic resin, a thermoplastic urethane resin, a polyester resin, and a polycarbonate resin.

[0026] The color pigment chip 13 is, for example, a pearl pigment. In this case, the transmissive reflective layer 10 may be a pearl printing layer containing a pearl pigment. "Pearl printing" indicates printing using ink containing a pearl pigment. The pearl pigment has, for example, a core (also referred to as a base material) and a coating covering the core. The core is a translucent particle, and the coating is transparent.

[0027] The core of the pearl pigment is composed of, for example, mica or metal powder, and the coating of the pearl pigment is composed of iron oxide, titanium oxide, or titanium dioxide (glass-like). When light is incident on the pearl pigment, reflected light is emitted from a plurality of locations (the interface between air and the coating, and the interface between the coating and the core) of the pearl pigment. Thereby, in the pearl pigment, a luster like that of a pearl is expressed.

[0028] The plurality of color pigment chips 13 may be interference pigments 14 that generate interference light. For example, the interference pigments 14 include red interference pigments (red pearl pigments), green interference pigments (green pearl pigments), or blue interference pigments (blue pearl pigments). The interference pigment 14 includes a thin sheet having visible light transmissibility and a metal oxide film covering the thin sheet. In this case, when incident light is incident on the transmissive reflective layer 10 from the side of the light transmissive substrate 4, among the incident light, the light reflected on the surface of the metal oxide film of the interference pigment 14 and the light reflected on the surface of the thin sheet interfere with each other. By this interference, interference light is generated in the interference pigment 14. By adjusting the film thickness of the metal oxide film of the interference pigment 14 and the refractive index of the metal oxide film, interference light having a desired wavelength can be generated.

[0029] As an example, the interference pigment 14 includes titanium dioxide-coated mica. The particle size of the titanium dioxide-coated mica is, for example, 25 μm or more and 60 μm or less. Here, the "particle size" indicates the longest diameter of the cross section of the particle. The thin sheet constituting the interference pigment 14 may be constituted by mica. However, the thin sheet may be constituted by something other than mica. The thin sheet may be constituted by, for example, silica, alumina, glass, or poly silicate. The metal oxide film constituting the interference pigment 14 may be constituted by titanium dioxide. However, the metal oxide film may be constituted by something other than titanium dioxide. The metal oxide film may be constituted by, for example, zirconium oxide, zinc oxide, iron oxide, or tin oxide.

[0030] When incident light is incident on the transmissive reflective layer 10, for example, monochromatic interference light is generated from the interference pigment 14. In this case, the interference pigment 14 of the transmissive reflective layer 10 shows a single color. However, the interference pigment of the transmissive reflective layer 10 may show a mixed color. In this case, the color pigment chips 13 include a plurality of colors of interference pigments that generate different interference lights, and interference lights having different wavelengths are generated from each of the plurality of colors of interference pigments.

[0031] The color dots 11 may be silver dots, and the transmissive reflective layer 10 may be a white pattern layer including a plurality of silver dots. In this case, the binder 12 is a silver binder, and the color pigment chip 13 is a silver pigment chip. When the color dots 11 include a silver binder and silver pigment chips and the silver pigment chips are dispersed inside the silver binder, the pattern of the pattern printing layer 5 can be made clearer. Also, the color pigment chip 13 of the color dots 11 may be silver pearl. In this case as well, the same effect as described above can be obtained.

[0032] Note that from the viewpoint of making the pattern of the pattern printing layer 5 clearer, it is more preferable that the color of the color dots 11 (color pigment chips 13) is a color of the same series as the color of the pattern of the pattern printing layer 5. For example, when the color of the pattern printing layer 5 is a warm color, it is more preferable that the color of the color dots 11 is a warm color, and when the color of the pattern printing layer 5 is a cool color, it is more preferable that the color of the color dots 11 is a cool color. However, the color of the color dots 11 is not particularly limited.

[0033] Next, the effects obtained from the display device 1 and the printed matter 2 according to the present embodiment will be described. In the present embodiment, the printed matter 2 of the display device 1 has a translucent base material 4, a pattern printing layer 5, and a transmissive reflective layer 10. The transmissive reflective layer 10 is formed on the surface 5b opposite to the translucent base material 4 of the pattern printing layer 5. The transmissive reflective layer 10 reflects a part of the light from the side opposite to the light source 3. By the transmissive reflective layer 10 reflecting a part of the light from the side opposite to the light source 3, the pattern printed on the pattern printing layer 5 can be clearly displayed. The transmissive reflective layer 10 transmits a part of the light from the light source 3. By the transmissive reflective layer 10 transmitting a part of the light from the light source 3, an image formed by the light emitted from the light source 3 can be clearly displayed. Therefore, both the pattern and the image can be clearly displayed.

[0034] As described above, the transmissive reflection layer 10 may have a plurality of color dots 11, and each of the plurality of color dots 11 may include a binder 12 and a plurality of color pigment chips 13 dispersed inside the binder 12. The plurality of color pigment chips 13 may be interference pigments 14 that generate interference light. Also, the transmissive reflection layer 10 may be a pearl printing layer containing a pearl pigment. In this case, both the pattern and the image displayed by the printed matter 2 can be made clearer.

[0035] (Second Embodiment) FIG. 3 is a cross-sectional view schematically showing a display device according to the second embodiment. As shown in FIG. 3, a part of the configuration of the display device 21 is the same as a part of the configuration of the aforementioned display device 1. Therefore, hereinafter, descriptions overlapping with those of the configuration of the aforementioned display device 1 will be appropriately omitted with the same reference numerals. The display device 21 includes a printed matter 22 and a light source 3. The printed matter 22 includes a translucent base material 4, a pattern printing layer 5, and a transmissive reflection layer 30 different from the transmissive reflection layer 10. The function of the printed matter 22 is the same as the function of the aforementioned printed matter 2.

[0036] The transmissive reflection layer 30 is, for example, a reflection film that transmits part of the light from the light source 3 and reflects part of the light from the side opposite to the light source 3. The transmissive reflection layer 30 is, for example, vapor-deposited on the surface 5b of the pattern printing layer 5. The transmissive reflection layer 30 is composed of aluminum, indium, or tin. The light reflectance in the transmissive reflection layer 30 is, for example, 15% or more and 30% or less.

[0037] As described above, the display device 21 and the printed matter 22 according to the second embodiment have a transmissive reflection layer 30, and the transmissive reflection layer 30 is a reflection film that transmits part of the light from the light source 3 and reflects part of the light from the side opposite to the light source 3. Therefore, the pattern printed on the pattern printing layer 5 can be clearly displayed, and the image by the light emitted from the light source 3 can be clearly displayed. Thus, the same effects as those of the aforementioned display device 1 and printed matter 2 can be obtained from the display device 21 and the printed matter 22.

[0038] In the second embodiment, the transmissive reflective layer 30 may be formed by laminating a plurality of resin layers. The resin layer may be made of, for example, PET. The transmissive reflective layer 30 may be a nano-laminated film composed of 100 or more nanofilms. Also in this case, the same effects as those obtained when having the transmissive reflective layer 30 which is a reflective film can be obtained.

[0039] Next, examples of the printed matter according to the present disclosure will be described. Note that the present invention is not limited to the contents of the following examples. Hereinafter, the results of checking the patterns in the printed matter according to the examples and the printed matters according to Comparative Examples 1 to 3 will be described. (Example) The printed matter according to the example is the same as the printed matter 2 described above, and the color pigment chip 13 of the color dot 11 is silver pearl. (Comparative Example 1) The printed matter according to Comparative Example 1 is a printed matter having the above-described light-transmissive base material 4 and the pattern printing layer 5 and not having the transmissive reflective layer 10. (Comparative Example 2) In the printed matter according to Comparative Example 2, instead of the above-described transmissive reflective layer 10, white concealment was performed on the surface 5b of the pattern printing layer 5 opposite to the light-transmissive base material 4. (Comparative Example 3) In the printed matter according to Comparative Example 3, instead of the above-described transmissive reflective layer 10, stronger white concealment than that in Comparative Example 2 was performed on the surface 5b of the pattern printing layer 5 opposite to the light-transmissive base material 4.

[0040] Each of the above-described printed matters of the examples and Comparative Examples 1 to 3 was pasted on a whiteboard and a black monitor, respectively, to verify the color development. As a result, the color development of the pattern printing layer 5 was better when the printed matters of the examples and Comparative Examples 2 and 3 were pasted on the monitor than when the printed matter of Comparative Example 1 was pasted on the monitor. When white characters were included in each of the pattern printing layers 5 of the examples and Comparative Examples 1 to 3 and pasted on the monitor, the visibility of the white characters decreased in Comparative Example 3, and the visibility of the white characters was good in the examples and Comparative Examples 1 and 2. Further, when black characters were included in each of the pattern printing layers 5 of the examples and Comparative Examples 1 to 3 and pasted on the whiteboard, the visibility of the black characters was better in the examples than in Comparative Example 2.

[0041] Furthermore, while the visible light transmittance of the printed matter of Comparative Example 1 was 67%, that of the printed matter of Comparative Example 2 was 14%, and that of the printed matter of Comparative Example 3 was 3%, the visible light transmittance of the printed matter of the Example was 31%, which was a good value. From the above, it was found that the printed matter according to the Example had a concealing effect, did not impair the video color transmittance, and could clearly display the pattern of the pattern printing layer 5.

[0042] As described above, various embodiments and examples of the printed matter and the display device according to the present disclosure have been described. However, the printed matter and the display device according to the present disclosure are not limited to the above-described embodiments or examples, and may be further modified without departing from the gist described in the claims. That is, the shape, size, material, number, and arrangement mode of each part of the printed matter and the display device according to the present disclosure can be appropriately changed within the scope of the above gist.

Explanation of Signs

[0043] 1... Display device, 2... Printed matter, 3... Light source, 4... Translucent substrate, 4b... Surface, 5... Pattern printing layer, 5b... Surface, 10... Transmission reflection layer, 11... Color dot, 12... Binder, 13... Color pigment chip, 14... Interference pigment, 21... Display device, 22... Printed matter, 30... Transmission reflection layer.

Claims

1. A printed matter disposed at a position facing a light source, comprising: a light-transmissive substrate; a pattern printing layer provided on one surface of the light-transmissive substrate; a transmissive reflection layer provided on the surface of the pattern printing layer opposite to the light-transmissive substrate; wherein the transmissive reflection layer transmits part of the light from the light source and reflects part of the light from the side opposite to the light source. Printed matter.

2. The transmissive reflection layer has a plurality of color dots, each of the plurality of color dots includes a binder and a plurality of color pigment chips dispersed inside the binder, and the plurality of color pigment chips are interference pigments that generate interference light. The printed matter according to Claim 1.

3. The transmissive reflection layer is a pearl printing layer containing a pearl pigment. The printed matter according to Claim 1.

4. The transmissive reflection layer is a reflective film that transmits part of the light from the light source and reflects part of the light from the side opposite to the light source. The printed matter according to Claim 1.

5. The transmissive reflection layer is composed of a plurality of resin layers laminated. The printed matter according to Claim 1.

6. A display device comprising: the printed matter according to any one of Claims 1 to 5; and a light source. Display device.

Images