Molded article, display device, injection molding method, injection molded article, and liquid crystal panel

Abstract

In the present invention, a picture printing layer is provided on one surface of a base material layer, and includes a first color pattern layer composed of a plurality of first color dots, and a second color pattern layer provided on the first color pattern layer and composed of a plurality of second color dots. Each of the plurality of first color dots includes a first color binder and a plurality of first color pigment chips dispersed inside the first color binder. Each of the second color dots includes a second color binder and a plurality of second color pigment chips dispersed inside the second color binder. Either the plurality of first color pigment chips or the plurality of second color pigment chips is a first interference pigment of a plurality of colors which respectively generate mutually different first interference lights. The other of the plurality of first color pigment chips and the plurality of second color pigment chips is a second interference pigment which generates second interference light of a single color different from a mixed color exhibited by the plurality of first interference pigments. The plurality of first interference lights and the second interference light are subjected to additive color mixing.

Description

Molded product, display device, injection molding method, injection molded product, and liquid crystal panel

[0001] The present disclosure relates to a molded article, a display device, an injection molding method, an injection molded article, and a liquid crystal panel.

[0002] Conventionally, decorative sheets have been known as decorative sheets for walls, etc., which include a substrate and a printed layer provided on the surface of the substrate, with the printed layer bearing a pattern such as a wood grain pattern or an abstract design. On a wall surface to which this decorative sheet is provided, the pattern is always visible. However, it is required that the visible pattern change depending on whether or not a light source installed on the back side of the decorative sheet is used.

[0003] For example, Patent Document 1 discloses a display device having a light source under a decorative sheet, in which a pattern is visible due to reflected light from a print layer made of RGB interference pigments when the light source is off, and a pattern is visible due to transmitted light from a CMY print layer when the light source is on (see Figure 11 of Patent Document 1). Patent Document 2 discloses a decorative sheet having two patterns using interference pigments, in which the patterns are visible when the image on the back side is not displayed, and the images are visible when the image on the back side is displayed (see Figures 1 and 2 of Patent Document 2).

[0004] Japanese Patent No. 5725581 Japanese Patent No. 6839319 Japanese Patent Application Laid-Open No. 2021-178431 Japanese Patent Application Laid-Open No. 2019-66842

[0005] The printed matter described in Patent Document 1 includes a first color pattern layer, a second color pattern layer, and a third color pattern layer, each containing a red interference pigment, a green interference pigment, or a blue interference pigment as pigment chips. This printed matter has a larger number of pattern layers to achieve more vivid colors than conventional printing. The decorative sheet described in Patent Document 2 includes a first design layer containing multiple types of interference pigments and exhibiting a first mixed color, and a second design layer containing multiple types of interference pigments and exhibiting a second mixed color different from the first mixed color. Because the first and second design layers each contain multiple types of interference pigments, this decorative sheet can complicate color matching and registration during printing.

[0006] The present disclosure is intended to solve the above-mentioned problems, and aims to provide a molded product that can express a three-dimensional pattern even with a small number of printed layers on the decorative sheet, and that has excellent manufacturing efficiency by simplifying the color matching and registration work when printing the decorative sheet.

[0007] Another object of the present disclosure is to provide an injection molding method, an injection molded product, and a display device that can suppress color tone changes in a pattern related to decoration of a light-transmitting decorative insert film.

[0008] The present disclosure also aims to provide a liquid crystal panel and a display device that can suppress external light reflection in the display area when the display device is displaying, suppress a decrease in glossiness in areas other than the display area, and conceal the display when the display device is turned off.

[0009] The molded article according to the present disclosure comprises a resin molded body and a decorative sheet disposed on a surface of the resin molded body, the resin molded body and the decorative sheet being visible light transmissive, the decorative sheet comprising a base layer and a picture print layer, the picture print layer being provided on one surface of the base layer and comprising a first color pattern layer constituted by a plurality of first color dots, and a second color pattern layer being provided on the first color pattern layer and constituted by a plurality of second color dots, each of the plurality of first color dots being a first color binder and a plurality of first color patterns dispersed within the first color binder. and a pigment chip, each of the plurality of second color dots includes a second color binder and a plurality of second color pigment chips dispersed inside the second color binder, one of the plurality of first color pigment chips and the plurality of second color pigment chips is a first interference pigment of a plurality of colors that respectively generate first interference lights different from each other, and the other of the plurality of first color pigment chips and the plurality of second color pigment chips is a second interference pigment that generates a second interference light of a single color different from the mixed color exhibited by the plurality of first interference pigments, and additively mixes the plurality of first interference lights and the second interference lights.

[0010] A display device according to the present disclosure includes a light source.

[0011] The injection molding method according to the present disclosure decorates a film to prepare a light-transmitting decorative insert film having a visible light transmittance of 10% or more and 80% or less, adds a pigment to a transparent resin to prepare a resin having a visible light transmittance of 40% or less, inserts the light-transmitting decorative insert film into a mold, and injects the resin into the mold to form an injection-molded product.

[0012] The injection-molded product according to the present disclosure is molded by the above-described injection molding method.

[0013] A display device according to the present disclosure includes the above-described injection-molded product and a display device.

[0014] The present disclosure aims to provide a liquid crystal panel and a display device that can suppress external light reflection in the display area when the display device is displaying, suppress a decrease in glossiness in areas other than the display area, and conceal the display when the display device is turned off.

[0015] The liquid crystal panel according to the present disclosure is a liquid crystal panel comprising at least a translucent substrate and a picture printing layer, wherein the picture printing layer is provided on one side of the translucent substrate and includes a pattern layer composed of a plurality of dots, each of the plurality of dots including a binder and a plurality of pigment chips dispersed within the binder, the plurality of pigment chips being interference pigments, and the other side of the translucent substrate opposite the picture printing layer has a display portion having optical transparency and an outer peripheral portion on the outer periphery of the display portion, wherein a processing portion that has been subjected to an anti-glare treatment is formed in the display portion, and a resin layer that has been embossed with an ultraviolet-curable resin is formed in the outer periphery.

[0016] According to one aspect, a display device according to the present disclosure includes the above-described liquid crystal panel and a display device.

[0017] According to the present disclosure, it is possible to express a three-dimensional pattern even with a small number of printed layers on the decorative sheet, and by simplifying the color matching and registration work when printing the decorative sheet, it is possible to provide a molded product with excellent manufacturing efficiency.

[0018] Furthermore, the present disclosure can provide an injection molding method, an injection molded product, and a display device that can suppress changes in the color tone of a pattern related to decoration of a light-transmitting decorative insert film.

[0019] Furthermore, according to the present disclosure, it is possible to provide a liquid crystal panel and a display device that can suppress external light reflection on the display section when the display device is displaying, suppress a decrease in glossiness in areas other than the display section, and conceal the display when the display device is turned off.

[0020] FIG. 1 is a cross-sectional view schematically showing a display device according to Example 1-1. FIG. 2 is a cross-sectional view schematically showing a picture-printed layer provided in the display device shown in FIG. 1. FIG. 3 is a cross-sectional view schematically showing a printed matter according to Example 1-2. FIG. 4 is a cross-sectional view schematically showing a white pattern layer provided in the printed matter shown in FIG. 3. FIG. 5 is a cross-sectional view schematically showing a printed matter according to Example 1-3. FIG. 6 is a cross-sectional view schematically showing a printed matter according to Example 1-4. FIG. 7 is a cross-sectional view schematically showing a picture-printed layer provided in a display device according to Example 2-1. FIG. 8 is a diagram showing the configuration of printed matter according to Experimental Examples 1 to 3. FIG. 9 is a cross-sectional view schematically showing a picture-printed layer provided in a display device according to Example 3-1. FIG. 10(a) is a schematic diagram showing color combinations of the picture-printed layer, and FIG. 10(b) is a schematic diagram showing color combinations of the picture-printed layer according to a comparative example. FIG. 11 is a schematic diagram showing specific examples of color combinations of the picture-printed layer. FIG. 12 is a cross-sectional view schematically illustrating a picture-printed layer included in a display device according to Example 4-1. FIG. 13(a) is a schematic diagram illustrating color combinations of the picture-printed layer, and FIG. 13(b) is a schematic diagram illustrating color combinations of the picture-printed layer according to a comparative example. FIG. 14 is a schematic diagram illustrating specific examples of color combinations of the picture-printed layer. FIG. 15(a) is a view of a light source covered with a printed material from the front side when the light source 3 is powered off, and FIG. 15(b) is a view of the light source covered with a printed material from the front side when the light source 3 is powered on. FIG. 16 is a schematic side view illustrating a display device including a liquid crystal panel according to this embodiment. FIG. 17 is a front view illustrating a display device including a liquid crystal panel according to this embodiment. FIG. 18 is an enlarged cross-sectional view illustrating the structure near the surface of a light-transmitting substrate for a panel. FIG. 19 is a schematic side view illustrating a display device including a liquid crystal panel according to a modified example. FIG. 20 is a cross-sectional view schematically illustrating an injection-molded product according to an embodiment of the present invention. Fig. 21 is a cross-sectional view and a plan view schematically showing a display device according to an embodiment of the present invention. Fig. 22 is a cross-sectional view schematically showing a light-transmitting decorative insert film. Fig. 23 is a cross-sectional view schematically showing an example of a specific structure of a design layer. Fig. 24 is a process diagram of an injection molding method according to an embodiment of the present invention. Fig. 25 is a schematic diagram showing the steps of the injection molding method.FIG. 26 is a cross-sectional view schematically showing an injection-molded product according to a comparative example. FIG. 27 is a cross-sectional view and a plan view schematically showing a display device according to a comparative example. FIG. 28 is a cross-sectional view schematically showing a display device according to embodiment 3-1. FIG. 29 is a cross-sectional view schematically showing a molded product according to embodiment 3-2. FIG. 30 is a cross-sectional view schematically showing a decorative sheet according to embodiment 3-3. FIG. 31 is a cross-sectional view schematically showing a decorative sheet according to embodiment 3-4. A diagram showing in-vehicle equipment. An exploded perspective view of the in-vehicle equipment. A cross-sectional exploded view of the in-vehicle equipment. A diagram showing the in-vehicle equipment.

[0021] [First Disclosure] A conventional liquid crystal panel has been known in which one surface of a light-transmitting substrate has a light-transmitting display section and an outer peripheral section on the outer periphery of the display section, the display section has a processing section that has been subjected to an anti-glare treatment, and the outer peripheral section has a resin layer that has been embossed with an ultraviolet-curable resin (see JP 2019-66842 A). A portion of the other surface of the light-transmitting substrate that corresponds to the outer peripheral section is printed in black.

[0022] Here, when a liquid crystal panel is used in a vehicle, for example, it is required to suppress reflection of external light when the display is on and to suppress a decrease in glossiness in areas other than the display area, while at the same time, it is required to conceal the display device so that it cannot be seen when the display device is turned off.

[0023] The present disclosure aims to provide a liquid crystal panel and a display device that can suppress external light reflection in the display area when the display device is displaying, suppress a decrease in glossiness in areas other than the display area, and conceal the display when the display device is turned off.

[0024] [1] A liquid crystal panel according to the present disclosure has, as one aspect, a liquid crystal panel comprising at least a light-transmitting substrate and a picture-printed layer, the picture-printed layer being provided on one side of the light-transmitting substrate and including a pattern layer composed of a plurality of dots, each of the plurality of dots including a binder and a plurality of pigment chips dispersed within the binder, the plurality of pigment chips being interference pigments, the other side of the light-transmitting substrate opposite the picture-printed layer having a light-transmitting display section and an outer peripheral section on the outer periphery of the display section, a processed section that has been subjected to an anti-glare treatment formed in the display section, and a resin layer that has been embossed with an ultraviolet-curable resin formed in the outer periphery.

[0025] The other surface of the translucent substrate opposite the picture-printed layer has a light-transmitting display section and an outer peripheral portion on the outer periphery of the display section, with a processed portion that has been anti-glare treated formed in the display section, and a resin layer that has been embossed with a UV-curable resin formed in the outer peripheral portion. Therefore, since the processed portion that has been anti-glare treated is formed in the display section, it is possible to suppress external light reflection in the display section and prevent glare, etc. In addition, since the resin layer that has been embossed with a UV-curable resin is formed in the outer peripheral portion, it is possible to suppress a decrease in gloss in the outer peripheral portion. The picture-printed layer is provided on one surface of the translucent substrate and includes a pattern layer composed of multiple dots, each of which includes a binder and multiple pigment chips dispersed within the binder, and the multiple pigment chips are interference pigments. In this case, the picture-printed layer can conceal the display device when the display is turned off. As a result, an image of the display device is displayed in the display section. Meanwhile, the picture-printed layer can conceal the presence of the display device by the pattern when the display device is turned off. Therefore, the image on the image printing layer is displayed on the display portion. As a result, the liquid crystal panel can suppress reflection of external light on the display portion when the display device is displaying, suppress reduction in glossiness in areas other than the display portion, and conceal the display device when the display device is turned off.

[0026] [2] In the liquid crystal panel of [1] above, the anti-glare treatment may be performed using a shot blasting process, which can further reduce external light reflection in the display unit having the processing unit and prevent glare, etc.

[0027] [3] The liquid crystal panel of [1] or [2] above may further have a white pattern layer formed on the picture print layer and composed of a plurality of silver dots, each of the plurality of silver dots containing a silver binder and a plurality of silver pigment chips dispersed within the silver binder. In this case, the color development of the first color pattern layer and the second color pattern layer is excellent, and the picture print layer can have a pattern that gives a whitish impression.

[0028] [4] The liquid crystal panel according to any one of [1] to [3] above may further include a transmissive smoke-printed layer provided on the outermost surface of the picture-printed layer on the side opposite the translucent substrate. In this case, the color development of the first color pattern layer and the second color pattern layer is more excellent. Furthermore, because the transmissive smoke-printed layer is transparent, a decrease in the visibility of images displayed on the display device is effectively suppressed.

[0029] [5] In the liquid crystal panel of any one of [1] to [4] above, the pattern layer comprises a first color pattern layer formed on one surface of the light-transmitting substrate and composed of a plurality of first color dots, and a second color pattern layer formed on the first color pattern layer and composed of a plurality of second color dots, wherein each of the first color dots comprises a first color binder and a plurality of first color pigment chips dispersed within the first color binder, and each of the second color dots comprises a second color binder and a plurality of second color pigment chips dispersed within the second color binder, and either one of the first color pigment chips or the second color pigment chips develops color as interference light on the reflected light side and contains interference pigments of multiple colors different from each other, and the other of the first color pigment chips or the second color pigment chips develops color as interference light on the reflected light side and contains one interference pigment of a color different from the mixed color exhibited by the interference pigments of the multiple colors contained in either one of the first color pigment chips or the second color pigment chips, and the interference light may be additively mixed. Because either the first color pattern layer or the second color pattern layer contains interference pigments of multiple colors that generate different interference lights, a three-dimensional pattern can be achieved even with a small number of printed layers. Furthermore, because only one of the first color pattern layer or the second color pattern layer needs to be the pattern layer containing interference pigments that generate multiple interference lights, color matching and registration work during printing can be simplified. Therefore, with this printed matter, a three-dimensional pattern can be achieved even with a small number of printed layers, and color matching and registration work during printing can be simplified.

[0030] [6] In the liquid crystal panel of any one of [1] to [4] above, the pattern layer comprises: a first color pattern layer formed on one surface of the light-transmitting substrate and composed of a plurality of first color dots; and a second color pattern layer formed on the first color pattern layer and composed of a plurality of second color dots, wherein each of the first color dots comprises a first color binder and a plurality of first color pigment chips dispersed within the first color binder, and each of the second color dots comprises a second color binder and a plurality of second color pigment chips dispersed within the second color binder, the plurality of first color pigment chips being a first interference pigment that generates a monochromatic first interference light, and the plurality of second color pigment chips being a second interference pigment that generates a monochromatic second interference light that is different from the color indicated by the first interference pigment, and the first interference light and the second interference light may be additively mixed. For example, for a pattern that can be expressed with a small number of colors, by limiting the interference pigments contained in the first color pattern layer and the second color pattern layer to a single color, it is possible to express the pattern using only the intensity of the single color. In this way, color matching and registration work during printing can be simplified. Therefore, this printed matter can simplify color matching and registration work during printing.

[0031] [7] In the liquid crystal panel of any of the above [1] to [4], the pattern layer comprises: a first color pattern layer formed on one surface of the light-transmitting substrate and composed of a plurality of first color dots; and a second color pattern layer formed on the first color pattern layer and composed of a plurality of second color dots, wherein each of the first color dots comprises a first color binder and a plurality of first color pigment chips dispersed within the first color binder, and each of the second color dots comprises a second color binder and a plurality of second color pigment chips dispersed within the second color binder, and either of the plurality of first color pigment chips or the plurality of second color pigment chips is a first interference pigment of a plurality of colors that respectively generate first interference lights different from each other, and the other of the plurality of first color pigment chips or the plurality of second color pigment chips is a second interference pigment that generates a monochromatic second interference light of the same color as any of the plurality of first interference pigments, and the plurality of first interference lights and the second interference light may be additively mixed. Because either the first color pattern layer or the second color pattern layer contains interference pigments of multiple colors that generate different interference lights, a three-dimensional pattern can be achieved even with a small number of printed layers. Furthermore, in this printed matter, the pattern layer containing the interference pigments that generate multiple interference lights can be either one of the first color pattern layer or the second color pattern layer, simplifying color matching and registration during printing. Meanwhile, the other of the first color pattern layer and the second color pattern layer contains a second interference pigment that generates a second interference light of a single color identical to one of the multiple first interference pigments. For example, for a pattern that can be expressed with a small number of colors, limiting the second interference pigment to the same single color as the first interference pigment makes it possible to express the pattern by varying the intensity of the single color. Furthermore, when a certain color tone needs to be emphasized, using two layers (first and second color pattern layers) makes it easier to adjust the color tone than adjusting it with just one color pattern layer. Furthermore, while adding too much interference pigment to one color pattern layer reduces the strength of the coating film, using two color pattern layers can prevent this loss of strength. As a result, color matching and registration work during printing can be simplified.

[0032] [8] According to one aspect, a display device according to the present disclosure includes the liquid crystal panel according to any one of [1] to [7] above and a display device.

[0033] The display device of the above [8] can provide the same functions and effects as the liquid crystal panel of the above [1].

[0034] According to the present invention, it is possible to provide a liquid crystal panel and a display device that can suppress external light reflection in the display area when the display device is displaying, suppress a decrease in glossiness in areas other than the display area, and conceal the display when the display device is turned off.

[0035] Specific examples of liquid crystal panels and display devices according to embodiments of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. In the following description, identical elements in the drawings will be designated by the same reference numerals, and duplicated descriptions will be omitted.

[0036] [Regarding Printed Matter] First, examples of printed matter used in this embodiment will be described with reference to FIGS. 1 to 15. However, the contents described with reference to FIGS. 1 to 15 are merely examples of printed matter that can be employed in the present disclosure. Therefore, the layer structures of printed matter exemplified in the description with reference to FIGS. 1 to 15 do not limit the layer structure of printed matter employed in the present disclosure. Note that, for the purpose of describing the printed matter, FIG. 1 shows the printed matter incorporated into a display device. In this specification, when a printed matter is formed by printing dot-shaped ink, the layer structure of the printed matter may include a structure in which parts of one layer and parts of another layer are in the same position in the thickness direction or may intersect with each other. When viewed in a plan view, the layer structure of a printed matter may also include a structure in which a pattern forming one layer and a pattern forming another layer partially overlap and do not overlap in other portions. Note that each layer in the layer structure of a printed matter can also be considered as a stack of printed patterns.

[0037] [Example 1-1] FIG. 1 is a cross-sectional view schematically showing a display device according to Example 1-1. FIG. 2 is a cross-sectional view schematically showing a picture printed layer included in the display device shown in FIG. 1. As shown in FIG. 1, the display device 1 includes a printed material 2 and a light source 3. The printed material 2 is a sheet for expressing a picture, and includes a light-transmitting substrate 4, a picture printed layer 5, and a transparent smoke printed layer 30. The printed material 2 is provided in front of the light source 3 (between the viewer and the light source 3). The printed material 2 is fully light-transmitting. Therefore, when the light source 3 is powered on, the viewer can see the light from the light source 3 that has passed through the printed material 2, and when the light source 3 is powered off, the viewer can see the picture expressed by the printed material 2. The light source 3 is, for example, a display device.

[0038] The light-transmitting substrate 4 is a substrate that is transparent to visible light. The light-transmitting substrate 4 is made of, for example, a transparent resin. Examples of transparent resins include PET, PMMA, polycarbonate, polyethylene, polypropylene, and nylon. The light-transmitting substrate 4 may be a glass substrate. The thickness of the light-transmitting substrate 4 is, for example, 25 μm to 250 μm, but substrates having a thickness below or above this range can also be used as long as printing is possible. In the case of a glass substrate, the thickness is, for example, several mm to approximately 10 mm. If necessary, a surface protection layer may be provided on the surface side of the light-transmitting substrate 4 (the side opposite the picture print layer 5).

[0039] The picture printed layer 5 is a layer that expresses the picture of the printed matter 2. The picture printed layer 5 includes a first color pattern layer 10 provided on one surface 4 a of the light-transmitting substrate 4, and a second color pattern layer 20 provided on the first color pattern layer 10.

[0040] The first color pattern layer 10 can be formed on the surface 4a by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 2 , the first color pattern layer 10 is composed of a plurality of first color dots 11. Here, "dot" refers to a point that is an element constituting a printed image, and its shape is not limited to a circle and may be a rectangle, a polygon, or other shape. Each of the plurality of first color dots 11 includes a first color binder 12 and a plurality of first color pigment chips 13 dispersed within the first color binder 12. The content of the plurality of first color pigment chips 13 is, for example, in the range of 0.5 parts by weight to 20 parts by weight, where the first color binder 12 is 100 parts by weight.

[0041] Examples of the first color binder 12 include vinyl resins, acrylic resins, thermoplastic urethane resins, polyester resins, and polycarbonate resins. The thickness of the first color pattern layer 10 is, for example, 1 μm to 10 μm. The first color pattern layer 10 may contain a curing agent. In this case, the heat resistance of the first color pattern layer 10 and the adhesion of the first color pattern layer 10 to the light-transmitting substrate 4 can be improved. The first color pattern layer 10 may also contain a weathering agent. Known ultraviolet absorbers and light stabilizers can be used as the weathering agent.

[0042] In Example 1-1, the multiple first color pigment chips 13 are multiple color first interference pigments 14a, 14b that generate different interference light from each other. Each of the first interference pigments 14a, 14b is composed of a thin flake (not shown) that is transparent to visible light and a metal oxide film (not shown) that covers the flake. Light incident on the first color pattern layer 10 from the translucent substrate 4 side and reflected on the surface of the metal oxide film interferes with light that passes through the metal oxide film and is reflected on the surface of the flakes, generating interference light. Adjusting the film thickness and refractive index of the metal oxide film allows for the generation of interference light having a desired wavelength.

[0043] In Example 1-1, each of the first interference pigments 14a, 14b is titanium dioxide-coated mica. The particle size range of the titanium dioxide-coated mica includes, for example, a range of 25 μm or more and 60 μm or less. Note that, here, "particle size" refers to the longest diameter of the particle cross section. The flakes that make up the first interference pigments 14a, 14b may be made of a material other than mica, such as silica, alumina, glass, or polysilicate. The metal oxide films that make up the first interference pigments 14a, 14b may be made of a material other than titanium dioxide, such as zirconium oxide, zinc oxide, iron oxide, or tin oxide.

[0044] When incident light E enters the first color pattern layer 10, the first interference pigments 14a, 14b generate first interference lights 15a, 15b that are different from each other. That is, the wavelengths of the first interference lights 15a, 15b are different from each other. As a result, the first interference pigments 14a, 14b exhibit a mixed color. The first interference pigments 14a, 14b are, for example, a red interference pigment (red pearl pigment) and a gold interference pigment (gold pearl pigment), respectively. In this case, the first interference lights 15a, 15b exhibit red and gold, respectively. The blending amounts of the first interference pigments 14a, 14b may be the same or different from each other.

[0045] The second color pattern layer 20 can be formed on the first color pattern layer 10 by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 2 , the second color pattern layer 20 is composed of a plurality of second color dots 21. Here, the term "dot" refers to a point that constitutes an element of a printed image, and its shape is not limited to a circle and may be a rectangle, a polygon, or other shape. Each of the plurality of second color dots 21 includes a second color binder 22 and a plurality of second color pigment chips 23 dispersed within the second color binder 22. The content of the plurality of second color pigment chips 23 is, for example, in the range of 0.5 parts by weight to 20 parts by weight, where the second color binder 22 is 100 parts by weight.

[0046] Examples of the second color binder 22 include vinyl resins, acrylic resins, thermoplastic urethane resins, polyester resins, and polycarbonate resins. The thickness of the second color pattern layer 20 is, for example, 1 μm to 10 μm. The second color pattern layer 20 may contain a curing agent. In this case, the heat resistance of the second color pattern layer 20 and the adhesion of the second color pattern layer 20 to the first color pattern layer 10 can be improved. The second color pattern layer 20 may also contain a weathering agent. Known ultraviolet absorbers and light stabilizers can be used as the weathering agent.

[0047] In Example 1-1, the multiple second color pigment chips 23 are second interference pigments 24 that generate monochromatic interference light different from the mixed color exhibited by the first interference pigments 14a, 14b. The second interference pigments 24 are composed of flakes (not shown) that are transparent to visible light and a metal oxide film (not shown) that covers the flakes. Light incident on the second color pattern layer 20 from the translucent substrate 4 side that is reflected on the surface of the metal oxide film interferes with light that passes through the metal oxide film and is reflected on the surface of the flakes, generating interference light. Adjusting the film thickness and refractive index of the metal oxide film allows for the generation of interference light having a desired wavelength.

[0048] In Example 1-1, the second interference pigment 24 is titanium dioxide-coated mica. The particle size range of the titanium dioxide-coated mica includes, for example, a range of 25 μm or more and 60 μm or less. Here, "particle size" refers to the longest diameter of the particle cross section. The flakes that make up the second interference pigment 24 may be made of a material other than mica, such as silica, alumina, glass, or polysilicate. The metal oxide film that makes up the second interference pigment 24 may be made of a material other than titanium dioxide, such as zirconium oxide, zinc oxide, iron oxide, or tin oxide.

[0049] When incident light E enters the second color pattern layer 20, the second interference pigment 24 generates a monochromatic second interference light 25. As a result, the second interference pigment 24 exhibits a monochromatic color. The second interference pigment 24 may be any interference pigment that generates a monochromatic second interference light 25 different from the mixed color exhibited by the first interference pigments 14a, 14b, and may be, for example, a green interference pigment (green pearl pigment). In this case, the second interference light 25 exhibits green color.

[0050] The transparent smoke printed layer 30 has the function of attenuating light from the front side of the viewpoint that passes through the printed matter 2. The transparent smoke printed layer 30 is provided on the outermost surface of the picture printed layer 5, opposite the light-transmitting substrate 4. In Example 1-1, the transparent smoke printed layer 30 is provided on the second color pattern layer 20, as shown in FIG. 1. The transparent smoke printed layer 30 can be provided on the second color pattern layer 20 by, for example, screen printing, inkjet printing, gravure printing, or offset printing using an ink in which a small amount of carbon black is dispersed in a resin binder such as a vinyl, acrylic, urethane, or polyester binder. The thickness of the transparent smoke printed layer 30 is, for example, 1 μm to 10 μm. The transparent smoke printed layer 30 may contain a curing agent. In this case, the heat resistance of the transparent smoke printed layer 30 and the adhesion of the transparent smoke printed layer 30 to the second color pattern layer 20 can be improved. Furthermore, a weatherproofing agent may be contained in the transparent smoke print layer 30. As the weatherproofing agent, known ultraviolet absorbers and light stabilizers can be used.

[0051] In the printed matter 2, the image is expressed by additively mixing the first interference light 15a, 15b generated by the first interference pigments 14a, 14b and the second interference light 25 generated by the second interference pigment 24.

[0052] The total light transmittance of the printed matter 2 is, for example, 30% to 70%. The total light transmittance here refers to a value measured using a spectrophotometer (for example, the UV-2100 spectrophotometer manufactured by Shimadzu Corporation).

[0053] In the printed matter 2 according to Example 1-1 described above, the first color pattern layer 10 contains the first interference pigments 14a and 14b, and the second color pattern layer 20 contains the second interference pigment 24, making it possible to achieve a three-dimensional image even with a small number of printed layers. Furthermore, in the printed matter 2, the first color pattern layer 10 is the only pattern layer of the first color pattern layer 10 and the second color pattern layer 20 that contains an interference pigment that generates different interference light from each other, making it possible to simplify color matching and registration work during printing. Therefore, the printed matter 2 makes it possible to achieve a three-dimensional image even with a small number of printed layers, and also simplifies color matching and registration work during printing.

[0054] In Example 1-1, the printed matter 2 includes a transparent smoke print layer 30 provided on the second color pattern layer 20. This provides better color development between the first color pattern layer 10 and the second color pattern layer 20. Furthermore, because the transparent smoke print layer 30 is transparent, a decrease in the visibility of the image on the display device 1 is effectively suppressed.

[0055] In Example 1-1, each of the first interference pigments 14a, 14b and the second interference pigment 24 contains titanium dioxide-coated mica having a particle size of 25 μm or more and 60 μm or less. When titanium dioxide-coated mica having a particle size of 25 μm or more is contained, the transparency and color development of the picture-printed layer 5 can be improved. When titanium dioxide-coated mica having a particle size of 60 μm or less is contained, a decrease in the resolution and gradation of the picture-printed layer 5 can be suppressed.

[0056] In Example 1-1, the content of the multiple first color pigment chips 13 is within the range of 0.5 parts by weight or more and 20 parts by weight or less, when the first color binder 12 is taken as 100 parts by weight, and the content of the multiple second color pigment chips 23 is within the range of 0.5 parts by weight or more and 20 parts by weight or less, when the second color binder is taken as 100 parts by weight. Because the content of the multiple first color pigment chips 13 is within the range of 0.5 parts by weight or more, the pattern of the first color pattern layer 10 is well expressed. Because the content of the multiple first color pigment chips 13 is within the range of 20 parts by weight or less, a decrease in the coating properties and transparency of the first color pattern layer 10 can be suppressed. Similarly, since the content of the multiple second color pigment chips 23 is within the range of 0.5 parts by weight to 20 parts by weight when the second color binder 22 is 100 parts by weight, the pattern of the second color pattern layer 20 is well expressed while preventing a decrease in the coating properties and transparency of the second color pattern layer 20.

[0057] In Example 1-1, the total light transmittance of the printed matter 2 is 30% to 70%. If the total light transmittance is 30% or more, when the printed matter 2 is placed in front of a screen, the light from the image on the screen makes it difficult to see the picture printed layer 5, and the image is more clearly visible. If the total light transmittance is 70% or less, the picture in the picture printed layer 5 can be prevented from appearing dark even if the screen is black.

[0058] In Example 1-1, the display device 1 includes a printed matter 2 and a light source 3. According to the display device 1, when the light source 3 is not lit, the pattern on the pattern printing layer 5 is visible, and when the light source 3 is lit, the transmitted light from the light source 3 (pattern display, video display, etc.) is visible.

[0059] In Example 1-1, the light source 3 may be a display device. In this case, when the display is not lit, the pattern on the pattern-printed layer 5 is visible, and when the display is lit, transmitted light from the display (pattern display, video display, etc.) is visible.

[0060] As described above, the multiple interference pigments 14a, 14b, 24 may contain pearl pigments. That is, the picture printed layer 5 may contain multiple interference pearl pigments (interference pigments 14a, 14b, 24) that are different from one another. Therefore, the printed matter 2 is a printed matter 2 that includes a light-transmitting substrate 4 and a picture printed layer 5, and the picture printed layer 5 may contain multiple interference pearl pigments. This allows the picture printed layer 5 to achieve a three-dimensional appearance.

[0061] The picture print layer 5 may include a first color pattern layer 10 containing an interference pearl pigment and a second color pattern layer 20 containing an interference pearl pigment, thereby enabling the picture print layer 5 to have a more three-dimensional appearance.

[0062] Each of the first color pattern layer 10 and the second color pattern layer 20 may contain a plurality of interference pearl pigments, thereby enabling the picture print layer 5 to have a more three-dimensional appearance. For example, the second color pattern layer 20 may contain other interference pearl pigments in addition to the interference pigment 24.

[0063] The particle diameters of the plurality of interference pearl pigments may be different from one another. By including interference pearl pigments of different particle diameters in this way, a decrease in the transparency of the picture-printed layer 5 is suppressed.

[0064] The particle diameter of the plurality of interference pearl pigments may be 25 μm or more and 60 μm or less. In this case, the color development of the pattern of the pattern-printed layer 5 can be improved. Furthermore, by suppressing an unnecessary decrease in the transparency of the pattern-printed layer 5, the visibility of the image on the display device can be improved when the display device is used.

[0065] The interference pearl pigment may contain titanium dioxide-coated mica. In this case, the wavelength of the interference light can be adjusted by adjusting the thickness of the titanium dioxide film. Furthermore, by increasing the smoothness of the mica surface, the brightness can be improved.

[0066] The effect of the picture printed layer 5 containing a plurality of interference pearl pigments can be obtained not only in the first example but also in the second to sixth examples described later.

[0067] [Example 1-2] Below, a printed matter 2A according to Example 1-2 will be described with reference to Figures 3 and 4. Note that in the description of Example 1-2, descriptions that overlap with Example 1-1 above will be omitted, and only differences from Example 1-1 above will be described. In other words, to the extent technically possible, descriptions from Example 1-1 above may be used appropriately in Example 1-2.

[0068] Fig. 3 is a cross-sectional view schematically showing a printed matter according to Example 1-2. Fig. 4 is a cross-sectional view schematically showing a white pattern layer provided in the printed matter shown in Fig. 3. The printed matter 2A includes a light-transmitting substrate 4 and a picture print layer 5. The printed matter 2A further includes a white pattern layer 40 provided on the second color pattern layer 20.

[0069] The white pattern layer 40 can be provided on the second color pattern layer 20 by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 4 , the white pattern layer 40 is composed of a plurality of silver dots 41. Here, "dot" refers to a point that is an element constituting a printed image, and its shape is not limited to a circle, but may be a rectangle, a polygon, or other shape. Each of the plurality of silver dots 41 contains a silver binder 42 and a plurality of silver pigment chips 43 dispersed within the silver binder 42. The content of the plurality of silver pigment chips 43 is, for example, in the range of 0.5 parts by weight to 20 parts by weight, where the silver binder 42 is 100 parts by weight.

[0070] Examples of the silver binder 42 include vinyl resins, acrylic resins, thermoplastic urethane resins, polyester resins, and polycarbonate resins. The thickness of the white pattern layer 40 is, for example, 1 μm to 10 μm. The white pattern layer 40 may contain a curing agent. In this case, the heat resistance of the white pattern layer 40 and the adhesion of the white pattern layer 40 to the second color pattern layer 20 can be improved. The white pattern layer 40 may also contain a weathering agent. Known ultraviolet absorbers and light stabilizers can be used as the weathering agent.

[0071] The configuration of the printed matter 2A described above also achieves the same effects as in Example 1-1 above. Furthermore, Example 1-2 includes a white pattern layer 40 formed on the second color pattern layer 20 and composed of a plurality of silver dots 41, each of which contains a silver binder 42 and a plurality of silver pigment chips 43 dispersed within the silver binder 42. This provides excellent color development for the first color pattern layer 10 and the second color pattern layer 20, and allows the picture printed layer 5 to have a pattern that gives a whitish impression.

[0072] [Example 1-3] Below, a printed matter 2B according to Example 1-3 will be described with reference to Figure 5. Note that in the description of Example 1-3, descriptions that overlap with Examples 1-1 and 1-2 above will be omitted, and only differences from Examples 1-1 and 1-2 above will be described. In other words, to the extent technically possible, descriptions from Examples 1-1 and 1-2 above may be used appropriately in Example 1-3.

[0073] 5 is a cross-sectional view schematically showing a printed matter according to Example 1-3. The printed matter 2B comprises a light-transmitting substrate 4 and a picture print layer 5. That is, the printed matter 2B does not comprise a translucent smoke print layer 30 or a white pattern layer 40. Even with the configuration of the printed matter 2B described above, the same effects as those of Example 1-1 can be achieved.

[0074] [Example 1-4] Below, a printed matter 2C according to Example 1-4 will be described with reference to Figure 6. Note that in the description of Example 1-4, descriptions that overlap with Examples 1-1, 1-2, and 1-3 above will be omitted, and only the differences from Examples 1-1, 1-2, and 1-3 above will be described. In other words, to the extent technically possible, descriptions from Examples 1-1, 1-2, and 1-3 above may be used appropriately in Example 1-4.

[0075] 6 is a cross-sectional view schematically showing a printed matter according to Example 1-4. The printed matter 2C comprises a light-transmitting substrate 4, a picture print layer 5, a white pattern layer 40, and a transmissive smoke print layer 30. The white pattern layer 40 is provided on the second color pattern layer 20, and the transmissive smoke print layer 30 is provided on the white pattern layer 40. Even with the configuration of the printed matter 2C described above, the same effects as those of Examples 1-1, 1-2, and 1-3 can be achieved.

[0076] The display device and printed matter according to the present disclosure are not limited to the above-described examples, and various other modifications are possible. For example, the second color pattern layer may include a first interference pigment of multiple colors that generate different first interference lights, and the first color pattern layer may include a second interference pigment that generates a single-color second interference light that is different from the mixed color of the multiple first interference pigments. Furthermore, while the above examples illustrate first color pigment chips with two colors, the first color pigment chips may also be first interference pigments with three or more colors.

[0077] [Second Example] [Example 2-1] The printed matter and display device according to this example may have the same configuration as that shown in Fig. 1. Therefore, in the printed matter and display device according to this example, a description of the same configuration as that of the printed matter and display device of Example 1-1 will be omitted. The printed matter and display device according to Example 2-1 adopt the layer configuration shown in Fig. 7 instead of the layer configuration shown in Fig. 2.

[0078] The first interference pigment 14a includes a plurality of first titanium dioxide-coated micas 18a having a small particle size grade with a particle size range of 5 μm to 25 μm and a second titanium dioxide-coated mica 18b having a large particle size grade with a particle size range of 25 μm to 40 μm. The first interference pigment 14b includes a plurality of first titanium dioxide-coated micas 16a having a small particle size grade with a particle size range of 5 μm to 25 μm and a plurality of second titanium dioxide-coated micas 16b having a large particle size grade with a particle size range of 25 μm to 40 μm. The first titanium dioxide-coated micas 18a, 16a have an average particle size (D50) of, for example, about 15 μm, and the second titanium dioxide-coated micas 18b, 16b have an average particle size (D50) of, for example, about 25 μm. As a result, the average particle size of the first titanium dioxide-coated mica 18a, 16a is smaller than the average particle size of the second titanium dioxide-coated mica 18b, 16b. The second titanium dioxide-coated mica 18b, 16b may have a particle size range of 25 μm to 60 μm. In this case, the average particle size (D50) of the second titanium dioxide-coated mica 18b, 16b is, for example, approximately 35 μm. As shown in FIG. 7, each of the multiple first titanium dioxide-coated mica 18a, 16a is arranged so as to fill the gaps between the multiple second titanium dioxide-coated mica 18b, 16b. Here, "particle size" refers to the longest diameter of the particle cross section.

[0079] When incident light L enters the first color pattern layer 10, the first interference pigments 14a, 14b generate first interference lights 17a, 17b that are different from each other. That is, the wavelengths of the first interference lights 17a, 17b are different from each other. As a result, the first interference pigments 14a, 14b exhibit a mixed color. The first interference pigments 14a, 14b may be, for example, a red interference pigment (red pearl pigment) and a gold interference pigment (gold pearl pigment), respectively. In this case, the first interference lights 17a, 17b exhibit red and gold, respectively. The first interference pigments 14a, 14b may be interference pigments of other colors. The blending amounts of the first interference pigments 14a, 14b may be the same or different from each other.

[0080] The second color pattern layer 20 may be the same as that shown in the first example.

[0081] The second interference pigment 24 includes a plurality of first titanium dioxide-coated micas 25a of a small particle size grade including a particle size range of 5 μm to 25 μm and a second titanium dioxide-coated mica 25b of a large particle size grade including a particle size range of 25 μm to 40 μm. The first titanium dioxide-coated micas 25a have an average particle size (D50) of, for example, approximately 15 μm, and the second titanium dioxide-coated micas 25b have an average particle size (D50) of, for example, approximately 25 μm. As a result, the average particle size of the first titanium dioxide-coated micas 25a is smaller than the average particle size of the second titanium dioxide-coated micas 25b. The second titanium dioxide-coated micas 25b may have a particle size range of 25 μm to 60 μm. In this case, the average particle size (D50) of the second titanium dioxide-coated micas 25b is, for example, approximately 35 μm. The plurality of first titanium dioxide-coated mica particles 25 a are arranged so as to fill the gaps between the plurality of second titanium dioxide-coated mica particles 25 b. Here, the “particle size” means the longest diameter of the particle cross section.

[0082] When incident light L enters the second color pattern layer 20, the second interference pigment 24 generates a monochromatic second interference light 26. As a result, the second interference pigment 24 exhibits a monochromatic color. The second interference pigment 24 may be any interference pigment that generates a monochromatic second interference light 26 different from the mixed color exhibited by the first interference pigments 14a, 14b, and may be, for example, a green interference pigment (green pearl pigment). In this case, the second interference light 26 exhibits green. Note that the second interference pigment 24 may be an interference pigment of a color other than green.

[0083] The transparent smoke printed layer 30 is a layer for attenuating light transmitted through the printed matter 2. The transparent smoke printed layer 30 is provided on the outermost surface of the picture printed layer 5, opposite the light-transmitting substrate 4. In Example 2-1, the transparent smoke printed layer 30 is provided on the second color pattern layer 20, as shown in FIG. 1. The transparent smoke printed layer 30 can be provided on the second color pattern layer 20 by, for example, screen printing, inkjet printing, gravure printing, or offset printing using an ink in which a small amount of carbon black is dispersed in a resin binder such as a vinyl, acrylic, urethane, or polyester binder. The thickness of the transparent smoke printed layer 30 is, for example, 1 μm to 10 μm. The transparent smoke printed layer 30 may contain a curing agent. In this case, the heat resistance of the transparent smoke printed layer 30 and the adhesion of the transparent smoke printed layer 30 to the second color pattern layer 20 can be improved. Furthermore, a weatherproofing agent may be contained in the transparent smoke print layer 30. As the weatherproofing agent, known ultraviolet absorbers and light stabilizers can be used.

[0084] In the printed matter 2, the image is expressed by additively mixing the first interference light 17a, 17b generated by the first interference pigments 14a, 14b and the second interference light 26 generated by the second interference pigment 24.

[0085] The total light transmittance of the printed matter 2 is, for example, 30% to 70%. The total light transmittance here refers to a value measured using a spectrophotometer (for example, the UV-2100 spectrophotometer manufactured by Shimadzu Corporation).

[0086] In the printed matter 2 according to Example 2-1 described above, in the first color pattern layer 10, each of the plurality of first titanium dioxide-coated micas 18a, 16a having a small particle size grade including a particle size range of 5 μm to 25 μm is arranged so as to fill the gaps between the plurality of second titanium dioxide-coated micas 18b, 16b having a large particle size grade including a particle size range of 25 μm to 40 μm. In the printed matter 2, in the second color pattern layer 20, each of the plurality of first titanium dioxide-coated micas 25a having a small particle size grade including a particle size range of 5 μm to 25 μm is arranged so as to fill the gaps between the plurality of second titanium dioxide-coated micas 25b having a large particle size grade including a particle size range of 25 μm to 40 μm. Therefore, the printed matter 2 can provide a pattern with excellent visibility and color development. Furthermore, in the printed matter 2, the first color pattern layer 10 contains large particle size grade second titanium dioxide-coated mica 18b, 16b, and the second color pattern layer 20 contains large particle size grade second titanium dioxide-coated mica 25b, thereby suppressing a decrease in the transparency of the picture printed layer 5. Therefore, with the printed matter 2, a decrease in the visibility of the image on the display device is effectively suppressed when the power is on.

[0087] In Example 2-1, the large particle size grade second titanium dioxide-coated mica 18b, 16b, 25b may have a particle size range of 25 μm to 60 μm. In this case, the color development of the pattern is superior. Furthermore, by suppressing an unnecessary decrease in the transparency of the pattern-printed layer 5, the visibility of the image on the display device 1 can be improved when the display device 1 is used.

[0088] In Example 2-1, the first interference pigments 14a, 14b and the second interference pigment 24 are interference pigments containing titanium dioxide-coated mica. Therefore, by adjusting the film thickness of the titanium dioxide film, it is possible to adjust the wavelength of the interference light. Furthermore, by increasing the smoothness of the mica surface, it is possible to improve the perceived brightness.

[0089] In the second example, the configurations according to Examples 1-2 to 1-4 in the first example may also be adopted.

[0090] In the above examples, the first interference pigment and the second interference pigment each contained a plurality of first titanium dioxide-coated micas and a plurality of second titanium dioxide-coated micas, but it is sufficient that at least one of the first interference pigment and the second interference pigment contains a plurality of first titanium dioxide-coated micas and a plurality of second titanium dioxide-coated micas. Furthermore, in the above examples, the first color pigment chips were first interference pigments of two colors, but the first color pigment chips may be first interference pigments of three or more colors. Furthermore, first interference pigments of multiple colors may be mixed together.

[0091] [Experimental Example] Here, we will use an experimental example to explain the tendency of the appearance of images and patterns on an LCD monitor depending on the particle size of the titanium dioxide-coated mica contained in the pattern print layer. As shown in Figure 8 and Experimental Examples 1 to 3 described below, printed matter was produced with the particle size of the titanium dioxide-coated mica adjusted. Figure 8 is a diagram showing the configuration of the printed matter for Experimental Examples 1 to 3. An LCD monitor was placed on the back side (transparent smoke print layer side) of the printed matter for Experimental Examples 1 to 3. The distance between the printed matter and the LCD monitor was 2 mm. The visibility (items 1 to 4 described below) of the LCD monitor when it was turned on and off was evaluated. Sensory evaluation was conducted by four people for items 1 to 4, and the average score was calculated.

[0092] Experimental Example 1: A printed material was produced by sequentially depositing a first-color pattern layer, a second-color pattern layer, a white pattern layer, and a transparent smoke print layer on a transparent PET substrate. In Experimental Example 1, the first-color pattern layer was formed by screen printing using an ink containing a first-color binder (urethane resin) and red and gold interference pigments dispersed within the first-color binder. The red and gold interference pigment contents were as follows, per 100 parts by weight of the first-color binder: 8 parts by weight of a red interference pigment having a particle size of 10 to 40 μm, 2 parts by weight of a red interference pigment having a particle size of 5 to 25 μm, 5 parts by weight of a gold interference pigment having a particle size of 10 to 60 μm, and 2 parts by weight of a gold interference pigment having a particle size of 5 to 25 μm.

[0093] In Experimental Example 1, a second color pattern layer was formed by screen printing using an ink containing a second color binder (urethane resin) and a green interference pigment dispersed within the second color binder. The green interference pigment contents were 4 parts by weight of a green interference pigment having a particle size of 10 to 40 μm and 1 part by weight of a green interference pigment having a particle size of 5 to 25 μm, per 100 parts by weight of the second color binder. The red interference pigment, gold interference pigment, and green interference pigment were all titanium dioxide-coated mica.

[0094] In Experimental Example 1, a white pattern layer was formed by screen printing using an ink containing a silver binder (urethane resin) and silver pigment chips dispersed within the silver binder. The silver pigment chip content was 1 part by weight of silver pigment chips with particle sizes of 5 to 25 μm per 100 parts by weight of the silver binder. Furthermore, a transparent smoke print layer was formed by screen printing using an ink containing a medium ink and a black ink in a ratio of 40:1.

[0095] Experimental Example 2: A printed material was produced by sequentially depositing a first-color pattern layer, a second-color pattern layer, a white pattern layer, and a transparent smoke print layer on a transparent PET substrate. In Experimental Example 2, the first-color pattern layer was formed by screen printing using an ink containing a first-color binder (urethane resin) and red and gold interference pigments dispersed within the first-color binder. The red and gold interference pigment contents were as follows, per 100 parts by weight of the first-color binder: 8 parts by weight of a red interference pigment having a particle size of 10 to 40 μm, 2 parts by weight of a red interference pigment having a particle size of 5 to 25 μm, 5 parts by weight of a gold interference pigment having a particle size of 10 to 60 μm, and 2 parts by weight of a gold interference pigment having a particle size of 5 to 25 μm.

[0096] In Experimental Example 2, a second color pattern layer was formed by screen printing using an ink containing a second color binder (urethane resin) and a green interference pigment dispersed within the second color binder. The content of the green interference pigment was 4 parts by weight, with a particle size of 10 to 40 μm, per 100 parts by weight of the second color binder. The red interference pigment, gold interference pigment, and green interference pigment were all titanium dioxide-coated mica.

[0097] In Experimental Example 2, a white pattern layer was formed by screen printing using an ink containing a silver binder (urethane resin) and silver pigment chips dispersed within the silver binder. The silver pigment chip content was 1 part by weight of silver pigment chips with particle sizes of 5 to 25 μm per 100 parts by weight of the silver binder. Furthermore, a transparent smoke print layer was formed by screen printing using an ink containing a medium ink and a black ink in a ratio of 40:1.

[0098] Experimental Example 3: A printed material was produced by sequentially providing a first color pattern layer, a second color pattern layer, and a transparent smoke print layer on a transparent PET substrate. In Experimental Example 3, the first color pattern layer was formed by screen printing using an ink containing a first color binder (urethane resin) and a green interference pigment dispersed within the first color binder. The green interference pigment content was 4 parts by weight of a green interference pigment having a particle size of 10 to 40 μm and 1 part by weight of a green interference pigment having a particle size of 5 to 25 μm, relative to 100 parts by weight of the first color binder.

[0099] In Experimental Example 3, a second color pattern layer was formed by screen printing using an ink containing a second color binder (urethane resin) and red and gold interference pigments dispersed within the second color binder. The red and gold interference pigment contents were 8 parts by weight of a red interference pigment having a particle size of 10 to 40 μm and 5 parts by weight of a gold interference pigment having a particle size of 10 to 60 μm, relative to 100 parts by weight of the second color binder.

[0100] In Experimental Example 3, a transparent smoke print layer was formed by screen printing using a mixture of medium ink and black ink in a ratio of 40:1.

[0101] <Item 1: Clarity of displayed content> When the LCD monitor was turned on, the clarity of the images and text displayed on the LCD monitor was evaluated. <Score> 5 points: The image has a weak presence relative to the images and text displayed on the LCD monitor, and the images and text appear clear. 3 points: The image has a slightly strong presence relative to the images and text displayed on the LCD monitor, and the image appears to overlap the images and text slightly. 1 point: The image has a strong presence relative to the images and text displayed on the LCD monitor, and the image appears to overlap the images and text.

[0102] <Item 2: Brightness of displayed content> When the LCD monitor was turned on, the brightness of the images and text displayed on the LCD monitor was evaluated. <Score> 5 points: The images and text displayed on the LCD monitor appear bright. 3 points: The images and text displayed on the LCD monitor appear slightly dark. 1 point: The images and text displayed on the LCD monitor appear very dark.

[0103] <Item 3: Influence of the black LCD monitor> When the LCD monitor was turned off, the influence of the black LCD monitor on the image was evaluated. <Score> 5 points: No influence of the black color of the LCD monitor, and the image was fully visible. 3 points: The influence of the black color of the LCD monitor was slightly noticeable, and the image appeared to be slightly dark (slightly high transparency). 1 point: The influence of the black color of the LCD monitor was noticeable, and the image appeared to be significantly dark (high transparency).

[0104] <Item 4: Color development of the image> The color development of the image was evaluated when the LCD monitor was turned off. <Score> 5 points: The color development of the image is good. 3 points: The color development of the image is somewhat weak, and the color of the image appears pale (whitish). 1 point: The color development of the image is weak, and the color of the image appears whitish.

[0105] The results of the sensory evaluations of items 1 to 4 for Experimental Examples 1 to 3 are shown in Table 1 below. Evaluations of 3 points or higher were deemed acceptable for practical use. Experimental Example 1 revealed that the influence of the black LCD monitor on the image was significantly low, and the image visibility tended to be sufficiently high. High evaluation results were also obtained for the color development of the image and the clarity and brightness of the image and character display. Experimental Examples 2 and 3, on the other hand, revealed that the influence of the black LCD monitor on the image was kept low, while the image color development and the clarity and brightness of the image and character display tended to be generally satisfactory.

[0106]

[0107] [Third Example] [Example 3-1] The printed matter and display device according to this example may have the same configuration as that shown in Fig. 1. Therefore, in the printed matter and display device according to this example, a description of the same configuration as that of the printed matter and display device of Example 1-1 will be omitted. The printed matter and display device according to this example employ the layer configuration shown in Fig. 9 instead of the layer configuration shown in Fig. 2.

[0108] The first color pattern layer 10 can be formed on the surface 4a by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 9 , the first color pattern layer 10 is composed of a plurality of first color dots 11. Here, "dot" refers to a point that constitutes a printed image, and its shape is not limited to a circle and may be a rectangle, a polygon, or other shape. Each of the plurality of first color dots 11 contains a first color binder 12 and a plurality of first color pigment chips 13 dispersed within the first color binder 12. The content of the plurality of first color pigment chips 13 is, for example, in the range of 0.5 parts by weight to 20 parts by weight, assuming the first color binder 12 is 100 parts by weight. In this case, the image of the first color pattern layer 10 is well expressed, while the coating property and transparency of the first color pattern layer 10 can be prevented from decreasing.

[0109] In Example 3-1, the multiple first color pigment chips 13 are interference pigments 14 (first interference pigments) that generate monochromatic interference light of a predetermined color. The interference pigments 14 are composed of flakes (not shown) that are transparent to visible light and a metal oxide film (not shown) that covers the flakes. Light incident on the first color pattern layer 10 from the translucent substrate 4 side that is reflected on the surface of the metal oxide film interferes with light that passes through the metal oxide film and is reflected on the surface of the flakes, generating interference light. By adjusting the film thickness and refractive index of the metal oxide film, interference light having a desired wavelength can be generated.

[0110] When incident light E is incident on the first color pattern layer 10, monochromatic interference light 15 (first interference light) is generated from the interference pigment 14. As a result, the interference pigment 14 exhibits a monochromatic color.

[0111] The second color pattern layer 20 can be formed on the first color pattern layer 10 by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 9 , the second color pattern layer 20 is composed of a plurality of second color dots 21. Here, the term "dot" refers to a point that constitutes a printed image. The shape of the dot is not limited to a circle, and it may be rectangular, polygonal, or other shapes. Each of the plurality of second color dots 21 includes a second color binder 22 and a plurality of second color pigment chips 23 dispersed within the second color binder 22. The content of the plurality of second color pigment chips 23 is, for example, in the range of 0.5 parts by weight to 20 parts by weight, assuming the second color binder 22 is 100 parts by weight. This allows the image of the second color pattern layer 20 to be well expressed while preventing a decrease in the coating properties and transparency of the second color pattern layer 20.

[0112] When incident light E is incident on the second color pattern layer 20, the interference pigment 24 (second interference pigment) generates monochromatic interference light 25 (second interference light). As a result, the interference pigment 24 exhibits a monochromatic color. The interference pigment 24 may be any interference pigment that generates monochromatic interference light 25 that is different from the color exhibited by the interference pigment 14.

[0113] The total light transmittance of the printed matter 2 is, for example, 30% to 70%. The total light transmittance referred to here means the value measured using a spectrophotometer (for example, the UV-2100 spectrophotometer manufactured by Shimadzu Corporation). If the total light transmittance is 30% or more, when the printed matter 2 is placed in front of a screen, the light from the image on the screen makes it difficult to see the picture printed layer 5, and the image is more clearly visible. If the total light transmittance is 70% or less, the picture in the picture printed layer 5 can be prevented from appearing dark even when the screen is black.

[0114] Next, the color combinations in the picture-printed layer 5 will be described with reference to Fig. 10 and Fig. 11. Fig. 10(a) is a schematic diagram showing the color combinations of the picture-printed layer 5. Fig. 10(b) is a schematic diagram showing the color combinations of the picture-printed layer 105 according to a comparative example. Fig. 11 is a schematic diagram showing specific examples of color combinations of the picture-printed layer 5.

[0115] As shown in Figure 10(a) , the first color pattern layer 10 contains an interference pigment of a single color "color A," thereby generating interference light of the single color "color A." The second color pattern layer 20 contains an interference pigment of a single color "color B," thereby generating interference light of the single color "color B." Color B is a different color from color A. Therefore, in the printed matter 2, the pattern is expressed by additively mixing the interference light of color A and the interference light of color B.

[0116] In the example shown in FIG. 11( a), "gold" is used as color A of the first color pattern layer 10, and "red" is used as color B of the second color pattern layer 20. The printed matter 2 may express a wood grain pattern as a design by additively mixing gold and red. By making the first color pattern layer 10 gold, a light wood grain can be expressed. In this case, the interference pigment 14 shown in FIG. 9 is, for example, a gold interference pigment (gold pearl pigment). The interference light 15 represents gold. The interference pigment 24 is, for example, a red interference pigment (red pearl pigment). The interference light 25 represents red.

[0117] In the example shown in Figure 11 (b), "red" is used as color A of the first color pattern layer 10, and "gold" is used as color B of the second color pattern layer 20. The printed matter 2 may express a wood grain pattern as a design by additively mixing red and gold. By using red for the first color pattern layer 10, it is possible to express a wood grain pattern with a slightly reddish hue.

[0118] In the example shown in FIG. 11(c), "silver" is used as color A of the first color pattern layer 10, and "gold" is used as color B of the second color pattern layer 20. The printed matter 2 may express a hairline pattern as a design by additively mixing silver and gold. By making the second color pattern layer 20 gold, the usual stainless steel hairline can be adjusted to a gold tone. The interference pigment 14 shown in FIG. 9 is, for example, a silver interference pigment (silver pearl pigment). The interference light 15 indicates silver.

[0119] In the example shown in Figure 11(d), "silver" is used as color A of the first color pattern layer 10, and "red" is used as color B of the second color pattern layer 20. The printed matter 2 may express a hairline pattern as a design by additively mixing silver and red. By using red for the second color pattern layer 20, the stainless steel hairline can be adjusted to a bronze tone.

[0120] In the example shown in Figure 11(e), "gold" is used as color A of the first color pattern layer 10, and "silver" is used as color B of the second color pattern layer 20. The printed matter 2 may express a hairline pattern as a design by additively mixing gold and silver. By making the first color pattern layer 10 gold (or a color containing gold), a gold-toned finish can be achieved.

[0121] In the printed matter 2 according to Example 3-1 described above, the first color pattern layer 10 contains an interference pigment 14 that generates a monochromatic interference light 15, and the second color pattern layer 20 contains an interference pigment 24 that generates a monochromatic interference light 25 that is different in color from the interference pigment 14. Here, as a comparative example, a printed matter 102 is shown in FIG. 10( b), in which the first color pattern layer 10 contains interference pigments of color X and color Y, and the second color pattern layer 20 contains an interference pigment of color Z. For example, when expressing a pattern such as that described in FIG. 11 using the configuration of the comparative example, it is necessary to adjust the three colors X, Y, and Z, which requires a lot of time and effort for color matching and registration during printing. On the other hand, for a pattern that can be expressed with a small number of colors, as in the printed matter 2 according to this example, by limiting the interference pigments contained in the first color pattern layer 10 and the second color pattern layer 20 to a single color, it is possible to express the pattern using only the intensity of the single color. In this way, color matching and registration during printing can be simplified. Therefore, this printed matter 2 can simplify color matching and registration work during printing.

[0122] In the third example, the configurations according to Examples 1-2 to 1-4 in the first example may also be adopted.

[0123] [Fourth Example] [Example 4-1] The printed matter and display device according to this example may have the same configuration as that shown in Fig. 1. Therefore, in the printed matter and display device according to this example, the description of the configuration that is the same as that of the printed matter and display device of Example 1-1 will be omitted. The printed matter and display device according to this example adopt the layer configuration shown in Fig. 12 instead of the layer configuration shown in Fig. 2.

[0124] The first color pattern layer 10 can be formed on the surface 4a by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 12 , the first color pattern layer 10 is composed of a plurality of first color dots 11. Here, the term "dot" refers to a point that constitutes a printed image. The shape of the dot is not limited to a circle, and it may be a rectangle, a polygon, or any other shape. Each of the plurality of first color dots 11 includes a first color binder 12 and a plurality of first color pigment chips 13 dispersed within the first color binder 12. The content of the plurality of first color pigment chips 13 is, for example, in the range of 0.5 parts by weight to 20 parts by weight, assuming the first color binder 12 is 100 parts by weight. In this case, the image of the first color pattern layer 10 is well expressed, while the coating property and transparency of the first color pattern layer 10 can be prevented from decreasing.

[0125] In Example 4-1, the multiple first color pigment chips 13 are interference pigments 14 (second interference pigments) that generate monochromatic interference light of a predetermined color. The interference pigments 14 are the same color as any of the interference pigments 24a and 24b (first interference pigments) described below. The interference pigments 14 are composed of flakes (not shown) that are transparent to visible light and a metal oxide film (not shown) that covers the flakes. Light incident on the first color pattern layer 10 from the translucent substrate 4 side and reflected on the surface of the metal oxide film interferes with light that passes through the metal oxide film and is reflected on the surface of the flakes, generating interference light. Adjusting the film thickness and refractive index of the metal oxide film allows for the generation of interference light having a desired wavelength.

[0126] When incident light E is incident on the first color pattern layer 10, monochromatic interference light 15 (second interference light) is generated from the interference pigment 14. As a result, the interference pigment 14 exhibits a monochromatic color.

[0127] The second color pattern layer 20 can be formed on the first color pattern layer 10 by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 12 , the second color pattern layer 20 is composed of a plurality of second color dots 21. Here, the term "dot" refers to a point that constitutes a printed image. The shape of the dot is not limited to a circle, and it may be a rectangle, a polygon, or any other shape. Each of the plurality of second color dots 21 includes a second color binder 22 and a plurality of second color pigment chips 23 dispersed within the second color binder 22. The content of the plurality of second color pigment chips 23 is, for example, in the range of 0.5 parts by weight to 20 parts by weight, assuming the second color binder 22 is 100 parts by weight. This allows the image of the second color pattern layer 20 to be well expressed while preventing a decrease in the coating properties and transparency of the second color pattern layer 20.

[0128] In Example 4-1, the multiple second color pigment chips 23 are interference pigments 24a, 24b of multiple colors that generate different interference light from each other. Each of the interference pigments 24a, 24b is composed of a thin flake (not shown) that is transparent to visible light and a metal oxide film (not shown) that covers the thin flake. Light incident on the second color pattern layer 20 from the translucent substrate 4 side that is reflected on the surface of the metal oxide film interferes with light that passes through the metal oxide film and is reflected on the surface of the flake, generating interference light. Adjusting the film thickness and refractive index of the metal oxide film allows for the generation of interference light having a desired wavelength.

[0129] In Example 4-1, the interference pigments 24a, 24b are titanium dioxide-coated mica. The particle size range of the titanium dioxide-coated mica includes, for example, a range of 25 μm or more and 60 μm or less. Here, "particle size" refers to the longest diameter of the particle cross section. The flakes that make up the interference pigments 24a, 24b may be made of a material other than mica, such as silica, alumina, glass, or polysilicate. The metal oxide films that make up the interference pigments 24a, 24b may be made of a material other than titanium dioxide, such as zirconium oxide, zinc oxide, iron oxide, or tin oxide.

[0130] When incident light E enters the second color pattern layer 20, the interference pigments 24a, 24b generate different interference lights 125a, 125b (first interference lights). That is, the wavelengths of the interference lights 125a, 125b are different from each other. As a result, the interference pigments 24a, 24b exhibit a mixed color. The blending amounts of the interference pigments 24a, 24b may be the same or different from each other. The interference pigment 24a may be an interference pigment that generates interference light 125a of the same single color as the single color exhibited by the interference pigment 14. Note that the interference pigment 24b may be an interference pigment that generates interference light 126b of the same single color as the single color exhibited by the interference pigment 14.

[0131] The total light transmittance of the printed matter 2 is, for example, 30% to 70%. The total light transmittance referred to here means the value measured using a spectrophotometer (for example, the UV-2100 spectrophotometer manufactured by Shimadzu Corporation). If the total light transmittance is 30% or more, when the printed matter 2 is placed in front of a screen, the light from the image on the screen makes it difficult to see the picture printed layer 5, and the image is more clearly visible. If the total light transmittance is 70% or less, the picture in the picture printed layer 5 can be prevented from appearing dark even when the screen is black.

[0132] Next, the color combinations in the picture-printed layer 5 will be described with reference to Fig. 13 and Fig. 14. Fig. 13(a) and (b) are schematic diagrams showing the color combinations of the picture-printed layer 5. Fig. 13(c) is a schematic diagram showing the color combinations of the picture-printed layer 105 according to a comparative example. Fig. 14 is a schematic diagram showing a specific example of the color combinations of the picture-printed layer 5.

[0133] As shown in Figure 13(a) , the first color pattern layer 10 contains an interference pigment of a single color "color A," thereby generating interference light of the single color "color A." The second color pattern layer 20 contains interference pigments of a single color "color A" and a single color "color B," thereby generating interference light of a mixture of "color A" and "color B." Color B is a different color from color A. Therefore, in the printed matter 2, the pattern is expressed by additively mixing the interference light of color A and the interference light of colors A and B.

[0134] Alternatively, as shown in Figure 13(b) , the second color pattern layer 20 contains an interference pigment of a single color "color A," thereby generating interference light of the single color "color A." The first color pattern layer 10 contains interference pigments of a single color "color A" and a single color "color B," thereby generating interference light of a mixture of "color A" and "color B." Color B is a different color from color A. Therefore, in the printed matter 2, the pattern is expressed by additively mixing the interference light of color A and the interference light of colors A and B.

[0135] In the example shown in FIG. 14( a), "gold" is used as color A of the first color pattern layer 10, and "gold" and "red" are used as color A and color B of the second color pattern layer 20, respectively. The printed matter 2 may express a wood grain pattern as a design by additively mixing gold and red. By using gold for the first color pattern layer 10, a light wood grain can be expressed. In this case, the interference pigment 14 and interference pigment 24a shown in FIG. 12 are, for example, gold interference pigments (gold pearl pigments). The interference light 15 and interference light 125a represent gold. The interference pigment 24b is, for example, a red interference pigment (red pearl pigment). The interference light 126b represents red.

[0136] In the example shown in Figure 14(b), "red" is used as color A of the first color pattern layer 10, and "red" and "gold" are used as color A and color B of the second color pattern layer 20. The printed matter 2 may express a wood grain pattern as a design by additively mixing red and gold. By using red for the first color pattern layer 10, it is possible to express a wood grain pattern with a slightly reddish hue.

[0137] In the example shown in Figure 14(c), "silver" is used as color A of the first color pattern layer 10, and "silver" and "gold" are used as color A and color B of the second color pattern layer 20, respectively. The printed matter 2 may express a hairline pattern as a design by additively mixing silver and gold. By including gold in the second color pattern layer 20, the usual stainless steel hairline can be adjusted to a gold tone. The interference pigment 14 and interference pigment 24a shown in Figure 12 are, for example, silver interference pigments (silver pearl pigments). The interference light 15 and interference light 126a indicate silver.

[0138] In the example shown in Figure 14(d), "silver" is used as color A of the first color pattern layer 10, and "silver" and "red" are used as color A and color B of the second color pattern layer 20. The printed matter 2 may express a hairline pattern as a design by additively mixing silver and red. By including red in the second color pattern layer 20, the stainless steel hairline can be adjusted to a bronze tone.

[0139] In the example shown in Figure 14(e), "silver" is used as color A and "gold" as color B of the first color pattern layer 10, and "silver" is used as color A of the second color pattern layer 20. The printed matter 2 may express a hairline pattern as a design by additively mixing gold and silver. By including gold (or a color containing gold) in the first color pattern layer 10, a finish that further emphasizes the gold tone can be achieved.

[0140] In the printed matter 2 according to Example 4-1 described above, either the first color pattern layer 10 or the second color pattern layer 20 contains interference pigments of multiple colors that generate interference light of different colors A and B, thereby achieving a three-dimensional image even with a small number of printed layers. Furthermore, in this printed matter 2, only one of the first color pattern layer 10 or the second color pattern layer 20 needs to contain the interference pigment that generates multiple interference light, thereby simplifying color matching and registration during printing. Meanwhile, the other of the first color pattern layer 10 or the second color pattern layer 20 contains an interference pigment that generates interference light of a single color, color A, that is the same as one of the multiple interference pigments. Here, as a comparative example, a printed matter 102 is shown in FIG. 13( c), in which the first color pattern layer 10 contains interference pigments of colors X and Y and the second color pattern layer 20 contains an interference pigment of color Z. For example, when expressing a pattern such as that illustrated in FIG. 14 using the comparative example configuration, it is necessary to adjust three colors, X, Y, and Z, which requires a lot of time and effort for color matching and registration during printing. On the other hand, for a pattern that can be expressed with a small number of colors, such as that illustrated in FIG. 14, by limiting the interference pigment of the first color pattern layer 10 and the interference pigment of the second color pattern layer 20 to the same single color A, it is possible to express the pattern by varying the intensity of the single color A. Furthermore, when it is desired to emphasize the color A, using two layers, the first color pattern layer 10 and the second color pattern layer 20, makes it easier to adjust the color than adjusting it using only one color pattern layer. Furthermore, while adding too much interference pigment to one color pattern layer reduces the strength of the coating film, using two color pattern layers 10 and 20 can suppress this decrease in strength. As a result, color matching and registration during printing can be simplified.

[0141] In the fourth example, the configurations according to Examples 1-2 to 1-4 in the first example may also be adopted.

[0142] The printed matter and the display device are not limited to the above-described examples, and various other modifications are possible.

[0143] The printed matter may be a sheet in which a pattern layer and a concealing layer are laminated. The concealing layer is a layer that conceals the color of the display device when an image is not displayed, while transmitting the image when an image is displayed. The concealing layer is set to a predetermined range of visible light transmittance. An opening is formed in the concealing layer. The concealing layer may be printed using an inkjet device, for example, with a white ink containing titanium oxide. Specifically, the concealing layer may be printed, for example, in solid white, on the back of the pattern layer. An example of a printing method is an inkjet device, but is not limited to this. In addition to inkjet printing, various printing methods such as gravure printing, offset printing, letterpress printing, flexographic printing, screen printing, and electrostatic printing may be used to form the concealing layer. The printing method is not limited to the above-mentioned printing methods, and any conventionally known image forming method can be used, such as hand-drawing, ink-flowing, transfer printing, photography, electrophotography, photosensitive resin printing, vacuum deposition, chemical etching, thermal coloring, and discharge breakdown printing. The design layer is formed on the surface of the concealing layer using a printing method and is provided for the purpose of imparting design to the printed matter. The design layer may be applied to the entire surface as long as it has a certain degree of light transparency. Unlike the concealing layer, the design layer does not require the provision of openings, allowing for highly precise designs. Specifically, the design layer can be printed using an inkjet device, and the desired pattern may be printed using four colors of printing ink, for example, cyan, magenta, yellow, and black. Although an inkjet device has been exemplified as a method for printing the design layer, this is not limited thereto, and various printing methods can be applied, as with the concealing layer. The printed matter can adopt any known structure as long as it can exhibit the above-mentioned functions.

[0144] The concealment and visibility of the printed material 2 will be described in more detail with reference to FIG. 15 . Note that the description based on FIG. 15 is merely an example of a usage mode used to explain the properties of the printed material 2. Therefore, the present disclosure is not limited to such a usage mode. FIGS. 15( a) and 15(b) are views of the light source 3 covered by the printed material 2, viewed from the front side. FIG. 15(a) shows the state when the light source 3 is turned off. FIG. 15(b) shows the state when the light source 3 is turned on. In this example, a wood grain pattern is used as the design of the printed material 2. A display device is used as the light source 3. The area of ​​the printed material 2 that covers the light source 3 is referred to as the display area DE. As shown in FIG. 15(a), when the light source 3 is turned off, the light source 3 is concealed by the design of the printed material 2. The printed matter 2 does not conceal the light source 3 with a light-blocking layer that blocks light, but rather with a light-transmitting pattern layer itself. Therefore, the visual information V1 displayed in the display area DE is the pattern of the printed matter 2. At this time, the viewer cannot see the display surface (black screen) of the light source 3 or the outline of the light source 3 from outside the printed matter 2. The visual information V1 visible in the display area DE and the visual information V2 visible in the area surrounding the display area DE are the same as the pattern of the printed matter 2. Therefore, the viewer cannot see the presence of the light source 3 from outside the printed matter 2.

[0145] As shown in FIG. 15( b), when the power supply of the light source 3 is ON, the light source 3 emits light and projects an arbitrary image GF onto the display surface. Here, the letter "X" displayed against a monochrome background is used as the image GF. In the display area DE, the light of the image GF passes through the printed material 2. As a result, the viewer views the image GF by visually recognizing the transmitted light in the display area DE. Therefore, the visual information V3 displayed in the display area DE is the image GF projected by the light source 3. The content of the visual information V3 may include information not included in the content of the visual information V1. In this case, the visual information V3 may be composed only of light that has passed through the image of the printed material 2.

[0146] For example, as a comparative example, a sheet that displays the visual information "X" using a light source may be provided in which a portion of a light-shielding layer is cut out in the shape of an "X" to form a light-transmitting layer (different from the printed matter 2 of this embodiment). Visual information V3 obtained using such a sheet and a light source such as a lamp has a background portion formed from a pattern on the surface of the light-shielding layer, and the "X" portion is formed from light from the light source that has transmitted through the light-transmitting layer. Another comparative example is a sheet in which a light-shielding layer in the shape of an "X" is formed on a portion of the light-transmitting layer. Visual information V3 obtained using such a sheet has a background portion formed from light from the light source that has transmitted through the light-transmitting layer, and the "X" portion is formed from a pattern on the surface of the light-shielding layer. In this comparative example, visual information V3 is provided by a combination of light that has transmitted through the sheet and light reflected from the surface of the sheet in areas where the light is blocked. Furthermore, when a sheet such as that of the comparative example is used, the "X" shape is formed on the sheet itself in a manner that allows it to be seen even when the light source is turned off, so the "X" content is also included in visual information V1. Therefore, the content of the visual information V3 is already included in the visual information V1.

[0147] Unlike a sheet using a light-shielding layer as in the comparative example, the visual information V3 in Fig. 15(b) using the printed matter 2 is entirely formed by light transmitted through the printed matter 2. Note that the entire printed matter 2 shown in Fig. 15 may be formed from a layer forming a light-transmitting pattern, or at least the entire display area DE may be formed from a layer forming a light-transmitting pattern. However, the printed matter 2 may also have a light-shielding layer provided in part of the display area DE, or a light-shielding layer provided in part of an area other than the display area DE.

[0148] Some display devices form a pattern in anticipation of the image content of the light source 3, and when the light source 3 is turned on, form visual information V3 by combining the pattern and the image. In the example shown in FIG. 15 , the purpose is to prevent the presence of the light source 3 from being recognized from the outside, so the visual information V3 in FIG. 15( b ) differs from the visual information V3 formed by such a combination. However, depending on the brightness of the image and the color of a certain area, a faint pattern may be reflected in all or part of the visual information V3. Furthermore, for purposes different from those shown in FIG. 15 , a combination of the pattern and the image of the printed material 2 may be used as visual information V3. When a touch panel is used as the light source 3, the user operates the touch panel via the printed material 2. Therefore, the printed material 2 may be set to a thickness, material, and hardness that do not interfere with touch panel operation.

[0149] FIG. 16 is a schematic side view showing a display device 100 including a liquid crystal panel 50 according to this embodiment. In this embodiment, the liquid crystal panel 50 is described as a panel included in a car navigation system, displaying information such as map information. As shown in FIG. 16, the display device 100 includes a liquid crystal panel 50 and a display device 70. The liquid crystal panel 50 includes a printed material 2 and a panel-use light-transmitting substrate 60 (light-transmitting substrate). Any of the printed materials 2 described with reference to FIGS. 1 to 15 may be used as the printed material 2. Therefore, the printed material 2 includes at least a light-transmitting substrate 4 and a picture print layer 5.

[0150] The printed material 2 is bonded to the surface 60a (one surface) of the panel-use translucent substrate 60 via a bonding layer 61. Here, the surface of the printed material 2 on the side opposite the picture print layer 5 (see FIG. 1 ) of the translucent substrate 4 is bonded to the surface 60a of the panel-use translucent substrate 60. As a result, the picture print layer 5 of the printed material 2 is provided on one surface 60a of the panel-use translucent substrate 60. The bonding layer 61 is made of a transparent tape or adhesive. A transparent adhesive or tape such as OCA or optical double-sided tape may be used as the bonding layer 61. The type of material for the panel-use translucent substrate 60 may be the same as that for the translucent substrate 4 of the printed material 2. The display device 70 is placed on the opposite side of the printed material 2 from the panel-use translucent substrate 60.

[0151] FIG. 17 is a front view showing a display device 100 including a liquid crystal panel 50 according to this embodiment. FIG. 18 is an enlarged cross-sectional view taken along line XVIII-XVIII shown in FIG. 17. As shown in FIG. 17, the liquid crystal panel 50 includes a display section 52, an outer peripheral section 54, and a plurality of openings 6. The other surface 60b (see FIG. 16) of the panel-use light-transmitting substrate 60 opposite the picture-printed layer 5 includes the light-transmitting display section 52 and an outer peripheral section 54 on the outer periphery of the display section 52. Note that in FIG. 17, the display section 52 is shown in a lighter color than the outer peripheral section 54.

[0152] In this embodiment, as an example, a case will be described in which the display unit 52 has a rectangular shape in a plan view. Note that the "plan view" refers to the perspective of the liquid crystal panel 50 in FIG. 17 , that is, the perspective of the liquid crystal panel 50 as seen from the thickness direction (plate thickness direction) of the liquid crystal panel 50.

[0153] The display unit 52 is formed with a processing portion 57 that has been subjected to anti-glare treatment (AG treatment). In this embodiment, as an example, a case where the anti-glare treatment is performed using shot blasting will be described. The processing conditions for the shot blasting are, for example, glass beads used as a projection material, a glass bead discharge pressure of 2 kgf, and a distance from the workpiece (light-transmitting panel substrate 60) of 50 cm. The display unit 52 is formed in a part of the light-transmitting panel substrate 60 (see FIGS. 17 and 18 ), which is the material for the liquid crystal panel 50.

[0154] In this embodiment, as an example, a case will be described in which the outer peripheral portion 54 is configured to surround the display unit 52 in a planar view of the panel-use translucent substrate 60. Therefore, the panel-use translucent substrate 60 has a region for forming the light-transmitting display unit 52 and a region for forming the outer peripheral portion 54, which is positioned more peripherally than the display unit 52 in a planar view. Furthermore, a resin layer 58 embossed with an ultraviolet-curable resin (UV resin) is formed on one surface of the panel-use translucent substrate 60 in a portion for forming the outer peripheral portion 54. The UV-curable resin may be, for example, a pale yellow, transparent liquid UV curing agent primarily composed of acrylic resin. Embossing will be described later.

[0155] 18 , an outer peripheral chamfered portion 68A is formed from ultraviolet curable resin UVR at a portion where the surface 60b of the panel translucent substrate 60 and the outer peripheral surface 60c of the panel translucent substrate 60 are continuous. The outer peripheral chamfered portion 68A is formed in an R-chamfered shape that connects the surface 60b of the panel translucent substrate 60 and the outer peripheral surface 60c of the panel translucent substrate 60. The chamfered shape may be flat or curved.

[0156] In plan view, characters corresponding to the device using the liquid crystal panel 50 are displayed on the outer periphery 54. In this embodiment, the liquid crystal panel 50 is used as a display panel provided in a car navigation system. Therefore, characters printed on the outer periphery 54 are, for example, "POWER," "HOME," "MENU," "AUDIO," "MAP," etc. These characters are written on the picture printing layer 5 of the printed matter 2 at positions corresponding to the outer periphery 54 in plan view.

[0157] Each opening 56 is formed in the outer peripheral portion 54 of the panel-use translucent substrate 60. Each opening 56 is formed by removing a portion of the panel-use translucent substrate 60 that forms the opening 56 through punching, pressing, or the like, which is performed after embossing. The openings 56 also pass through the printed matter 2.

[0158] Therefore, each opening 56 penetrates the outer peripheral portion 54 in the thickness direction of the panel translucent base material 60. Furthermore, each opening 56 is formed at a position in the panel translucent base material 60 where a switch (button, dial, etc.) corresponding to the function of the car navigation system and an entrance / exit for a recording medium (optical disk, etc.) on which data (music, video, map, etc.) is recorded will be located.

[0159] 18 , an inner wall side chamfer 68B is formed from ultraviolet curable resin UVR at a portion where the surface 60b of the panel translucent base material 60 and the inside of the opening 56 are continuous. The inner wall side chamfer 68B is formed in an R-chamfered shape that connects the surface 60b of the panel translucent base material 60 and the inner wall surface 56a of the opening 56.

[0160] (Embossing Process Applied to Outer Periphery 54) The embossing process applied to the outer periphery 54 will be described. The embossing process is a process performed before removing the portion of the panel-use translucent substrate 60 where the opening 56 will be formed, and is a process using ultraviolet-curable resin UVR. Specifically, in a state where a recess corresponding to the shape of the opening 56 is formed in the portion of the panel-use translucent substrate 60 where the opening 56 will be formed, the ultraviolet-curable resin UVR is applied to a portion of one surface 60b of the panel-use translucent substrate 60 where the outer periphery 54 will be formed. Then, in a state where a template having a protrusion corresponding to the shape of the opening 56 is placed on one surface 60b of the panel-use translucent substrate 60 to which the ultraviolet-curable resin UVR has been applied, the panel-use translucent substrate 60 is pressed against the template using a roller or the like. Furthermore, the template is removed from the panel-use translucent substrate 60, and the ultraviolet-curable resin UVR applied to the panel-use translucent substrate 60 is irradiated with ultraviolet light to harden it. The protrusion formed on the template and corresponding to the shape of the opening 56 is formed to have a rounded chamfered shape.

[0161] At this time, the ultraviolet-curable resin UVR applied to the surface 60b of the panel translucent substrate 60 is applied not only to the surface 60b of the panel translucent substrate 60, but also to the inside of the recess corresponding to the shape of the opening 56. Therefore, when the portion of the panel translucent substrate 60 that forms the opening 56 is removed by processing performed after the embossing process, the ultraviolet-curable resin UVR that has been applied to the inside of the recess corresponding to the shape of the opening 56 and cured is also removed. Therefore, in the panel translucent substrate 60, the opening 56 is formed, and an inner wall side chamfer 68B is also formed from the cured ultraviolet-curable resin UVR.

[0162] The portion forming the display unit 52 has an effective load roughness (Rk) in the range of 5.6 μm to 7.2 μm, and an average height (Rc) in the range of 8.0 μm to 10.2 μm. Additionally, the portion forming the display unit 52 has an average roughness (Ra) in the range of 2.0 μm to 2.4 μm, and a root-mean-square roughness (Rq) in the range of 2.5 μm to 3.0 μm. The average height (Rc) refers to the average height of the convex portions formed by peaks and valleys in the portion forming the display unit 52. Other parameters related to the display unit 52 may be publicly known values, such as those disclosed in JP 2019-66842 A.

[0163] In addition, for the anti-glare treatment, embossing, processing of the openings 56, etc. on the panel translucent substrate 60, known methods such as those shown in JP 2019-66842 A may be used.

[0164] Next, the function and effect of the liquid crystal panel 50 will be described.

[0165] The other surface 60b of the panel translucent substrate 60 opposite the picture printed layer 5 has a light-transmitting display section 52 and an outer peripheral section 54 on the outer periphery of the display section 52. The display section 52 has a processed section 57 that has been subjected to an anti-glare treatment, and the outer peripheral section 54 has a resin layer 58 that has been embossed with an ultraviolet-curable resin. Therefore, since the anti-glare treated processed section 57 is formed in the display section 52, it is possible to suppress reflection of external light in the display section 52 and prevent glare, etc. In addition, since the outer peripheral section 54 has a resin layer 58 that has been embossed with an ultraviolet-curable resin, it is possible to suppress a decrease in gloss in the outer peripheral section 54. The picture printed layer 5 is provided on one surface 60a of the panel translucent substrate 60 and includes a pattern layer composed of a plurality of dots, each of which includes a binder and a plurality of pigment chips dispersed within the binder, and the plurality of pigment chips are interference pigments. In this case, the picture printed layer 5 can conceal the display device 70 when the display is turned off. As a result, an image of the display device 70 is displayed on the display section 52. On the other hand, the picture printed layer 5 can conceal the presence of the display device 70 by the picture when the display device 70 is turned off. Therefore, the picture printed layer 5 is displayed on the display section 52. As described above, the liquid crystal panel 50 suppresses external light reflection on the display section 52 when the display device 70 is displayed, suppresses a decrease in glossiness in areas other than the display section 52, and can conceal the display device 70 when the display device 70 is turned off.

[0166] The anti-glare treatment may be performed using shot blasting on the liquid crystal panel 50. This makes it possible to further suppress reflection of external light on the display unit 52 having the processing unit 57, and to prevent glare and the like.

[0167] 3 and 6 as the printed matter 2, the liquid crystal panel 50 further has a white pattern layer 40 formed on the picture print layer 5 and composed of a plurality of silver dots, and each of the plurality of silver dots may contain a silver binder 42 and a plurality of silver pigment chips 43 dispersed within the silver binder 42. This provides excellent color development for the first color pattern layer 10 and the second color pattern layer 20, and allows the picture print layer 5 to have a pattern that gives a whitish impression.

[0168] 6 as the printed matter 2, the liquid crystal panel 50 may further have a transmissive smoke printed layer 30 provided on the outermost surface of the picture printed layer 5 on the side opposite the panel translucent substrate 60. This provides better color development for the first color pattern layer 10 and the second color pattern layer 20. Furthermore, because the transmissive smoke printed layer 30 is transmissive, a decrease in the visibility of the image on the display device 1 is effectively suppressed.

[0169] 2 and the like is used as the picture print layer 5, the liquid crystal panel 50 has a pattern layer including a first color pattern layer 10 formed on one surface 60a of the light-transmitting substrate 60 and constituted by a plurality of first color dots, and a second color pattern layer 20 formed on the first color pattern layer 10 and constituted by a plurality of second color dots, each of the first color dots including a first color binder and a plurality of first color pigment chips dispersed inside the first color binder, Each of the first and second color pigment chips includes a second color binder and a plurality of second color pigment chips dispersed within the second color binder, wherein one of the first and second color pigment chips exhibits a color as interference light on the reflected light side and includes interference pigments of different colors, and the other of the first and second color pigment chips exhibits a color as interference light on the reflected light side and includes one interference pigment exhibiting a color different from the mixed color exhibited by the interference pigments of the plurality of colors included in either the first or second color pigment chip, and the interference light may be additively mixed. Because the first color pattern layer 10 includes first interference pigments 14a and 14b and the second color pattern layer 20 includes a second interference pigment 24, a three-dimensional image can be expressed even with a small number of printed layers. Furthermore, in the printed matter 2, the first color pattern layer 10 is the only pattern layer of the first and second color pattern layers 10 that contains interference pigments that produce different interference light from each other, thereby simplifying color matching and registration operations during printing. Therefore, with the printed matter 2, a three-dimensional image can be expressed even with a small number of printing layers, and color matching and registration work during printing can be simplified.

[0170] 9 and the like as the picture printed layer 5, the liquid crystal panel 50 has a pattern layer comprising: a first color pattern layer formed on one surface 60a of the light-transmitting substrate 60 and composed of a plurality of first color dots; and a second color pattern layer 20 formed on the first color pattern layer 10 and composed of a plurality of second color dots, wherein each of the first color dots comprises a first color binder and a plurality of first color pigment chips dispersed within the first color binder, each of the second color dots comprises a second color binder and a plurality of second color pigment chips dispersed within the second color binder, the plurality of first color pigment chips are a first interference pigment that generates a monochromatic first interference light, and the plurality of second color pigment chips are a second interference pigment that generates a monochromatic second interference light different from the color indicated by the first interference pigment, and the first interference light and the second interference light may be additively mixed. For example, for a pattern that can be expressed with a small number of colors, by limiting the interference pigments contained in the first color pattern layer 10 and the second color pattern layer 20 to a single color, it is possible to express the pattern using only the intensity of the single color. In this way, color matching and registration work during printing can be simplified. Therefore, this printed matter can simplify color matching and registration work during printing.

[0171] 12 and the like is used as the picture print layer 5, the liquid crystal panel 50 has a pattern layer including a first color pattern layer 10 formed on one surface 60a of the light-transmitting substrate 60 and constituted by a plurality of first color dots, and a second color pattern layer 20 formed on the first color pattern layer 10 and constituted by a plurality of second color dots, each of the first color dots including a first color binder and a plurality of first color pigment chips dispersed inside the first color binder, and each of the second color dots including a second color pigment chip The liquid crystal panel 50 includes a color binder and a plurality of second color pigment chips dispersed within the second color binder, wherein one of the plurality of first color pigment chips and the plurality of second color pigment chips is a first interference pigment of multiple colors that generates different first interference lights, and the other of the plurality of first color pigment chips and the plurality of second color pigment chips is a second interference pigment that generates a monochromatic second interference light of the same color as any of the plurality of first interference pigments, and the plurality of first interference lights and the second interference light may be additively mixed. Because either the first color pattern layer 10 or the second color pattern layer 20 contains interference pigments of multiple colors that generate different interference lights, a three-dimensional image can be expressed even with a small number of printed layers. Furthermore, in this liquid crystal panel 50, the pattern layer containing the interference pigment that generates multiple interference lights can be only one of the first color pattern layer 10 and the second color pattern layer 20, thereby simplifying color matching and registration operations during printing. On the other hand, the other of the first color pattern layer 10 and the second color pattern layer 20 contains a second interference pigment that generates a second interference light of a single color identical to one of the multiple first interference pigments. For example, for a pattern that can be expressed with a small number of colors, limiting the second interference pigment to the same single color as the first interference pigment makes it possible to express the pattern by varying the intensity of the single color. Furthermore, when a certain color tone needs to be emphasized, using two layers, the first color pattern layer 10 and the second color pattern layer 20, makes it easier to adjust the color tone than adjusting it with just one color pattern layer. Furthermore, while adding too much interference pigment to one color pattern layer reduces the strength of the coating film, using two color pattern layers can suppress this decrease in strength. As a result, color matching and registration operations during printing can be simplified.

[0172] The display device 100 includes, as one aspect, the liquid crystal panel 50 and a display device 70 .

[0173] The display device 100 can provide the same functions and effects as the liquid crystal panel 50 described above.

[0174] The present disclosure is not limited to the above-described embodiments.

[0175] For example, a configuration as shown in Fig. 19 may be employed. In the example shown in Fig. 19, a picture print layer 5 is formed directly on one surface 60a of a light-transmitting substrate 60 for a panel. In this case, the light-transmitting substrate 60 for a panel also functions as the light-transmitting substrate 4 of the printed matter 2. Note that any of the picture print layers 5 shown in Figs. 1 to 14 may be employed as the picture print layer 5, and a white pattern layer 40 and a transmissive smoke print layer 30 may also be provided.

[0176] [Second Disclosure] Conventionally, an injection-molded product formed by injecting a molten material into a light-transmitting insert film has been known (see, for example, JP 2021-178431 A). This injection-molded product is used to decorate a center console. The driver can view an image displayed on a display device through the injection-molded product.

[0177] Here, when light is to be transmitted, transparent resins such as acrylic, ABS, and polycarbonate are used for the resin used in injection molding. When an insert film is decorated with light-transmitting properties, the light-transmitting decorative insert film transmits light. When a display area is formed by providing a partially opaque layer under the decorative layer, the display area can be revealed on the decorative layer by light transmitted through the display area when light is shone from the back. However, even when light is not shone from the back, the color tone of the decorative layer in the display area changes when light is irradiated from the front, which creates a problem in that the display area can be seen even when not displayed. Furthermore, even without providing an opaque layer, there is a problem in that the overall color tone of the pattern layer becomes pale when light is irradiated from the front.

[0178] The present disclosure is intended to solve the above-mentioned problems, and aims to provide an injection molding method, an injection-molded product, and a display device that can suppress color changes in the pattern related to the decoration of a light-transmitting decorative insert film.

[0179] The present inventors have found that when a transparent resin is injection molded into an insert film decorated with a visible light-transmitting pattern, light transmitted through the surface of the light-transmitting decorative insert film is reflected at the boundary between the transparent resin and the air layer on the back side of the transparent resin, illuminating the light-transmitting decorative insert film from behind. Furthermore, the present inventors have found that this phenomenon causes the color tone of the pattern in the light-transmitting decorative insert film to become lighter, making the pattern less visible, or the color tone of the pattern in the area with and without the concealing layer to be different, making the display area always visible and reducing the design quality, or, when a display is installed behind the injection-molded product, reducing the contrast of the image on the display device when viewed through the injection molding.

[0180] [1] The present disclosure provides an injection molding method according to one aspect, which includes preparing a light-transmitting decorative insert film having a visible light transmittance of 10% or more and 80% or less by decorating a film, preparing a resin having a visible light transmittance of 40% or less by adding a pigment to a transparent resin, inserting the light-transmitting decorative insert film into a mold, and injecting the resin into the mold to form an injection-molded product.

[0181] In this injection molding method, the resin is injection molded while a light-transmitting decorative insert film is inserted into a mold. Therefore, a resin layer is formed by injection molding on the back side of the decorated light-transmitting decorative insert film, which has a transmittance of 10% or more and 80% or less. The injection-molded resin layer is prepared by adding a pigment to a transparent resin so that the transmittance is 40% or less. Therefore, even if light irradiated from the surface of the light-transmitting decorative insert film is reflected by the air layer on the back side of the resin layer, the reflected light is reduced. This reduces the amount of light illuminating the backside of the light-transmitting decorative insert film, thereby preventing the color tone of the decorative pattern from fading. Furthermore, reducing the transmittance of the resin used for injection molding enhances the concealment of the base, thereby concealing the presence of a display device even if one is present inside. Furthermore, using a smoke-colored resin for the resin used for injection molding also makes it possible to eliminate the concealment layer or colored layer of the light-transmitting decorative insert film itself.

[0182] [2] In the injection molding method of [1] above, the pigment may be carbon black. In this case, by adding an appropriate amount of carbon to the transparent resin, the resin for injection molding can be made gray-smoke with a transmittance of 40% or less.

[0183] [3] In the injection molding method of the above [1] or [2], the pigment may be an inorganic or organic color pigment, thereby coloring the smoke resin and controlling the color tone of the light-transmitting decorative insert film.

[0184] [4] In another aspect, the present disclosure relates to an injection-molded product. The injection-molded product is formed by the injection molding method described in any one of [1] to [3] above. In this case, it is possible to provide an injection-molded product in which the color tone of the pattern of the light-transmitting decorative insert film is not faded due to backside reflection.

[0185] [7] A display device includes the injection-molded product according to [4] above and a display device. In this case, the display device can be concealed while preventing the color tone of the pattern of the light-transmitting decorative insert film from fading.

[0186] According to the present disclosure, it is possible to provide an injection molding method, an injection molded product, and a display device that can suppress color tone changes in a pattern related to decoration of a light-transmitting decorative insert film.

[0187] Specific examples of an injection molding method, an injection-molded product, and a display device according to embodiments of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. In the following description, identical elements in the drawings will be designated by the same reference numerals, and duplicate explanations will be omitted.

[0188] Fig. 20 is a cross-sectional view schematically showing an injection-molded product 10101 according to an embodiment of the present disclosure. Fig. 21 is a cross-sectional view schematically showing a display device 100 according to this embodiment. As shown in Fig. 20 , the injection-molded product 10101 includes a light-transmitting decorative insert film 122 and a resin layer 103. As shown in Fig. 21(a) , the display device 100 includes the injection-molded product 101 and a display device 104.

[0189] The injection-molded product 101 is provided in front of the display device 104, which is a light source (between the viewer and the display device 104). The display device 100 is constructed by concealing the display device 104 with the injection-molded product 101. The injection-molded product 101 is fully light-transmitting. Therefore, when the display device 104 is powered on, the viewer can see the light from the display device 104 that has passed through the injection-molded product 101, and when the display device 104 is powered off, the viewer can see the image expressed by the injection-molded product 101. The injection-molded product 101 has a peripheral portion 101b that is located on the outer periphery side of a central portion 101a near the center where the display device 104 is disposed, and curves toward the back side (the display device 104 side) as it extends toward the outer periphery. In this embodiment, the outer peripheral portion 101b is bent so as to be inclined relative to the central portion 101a, but it may be bent so as to be curved.

[0190] The light-transmitting decorative insert film 122 is a sheet for expressing a pattern. The visible light transmittance of the light-transmitting decorative insert film 122 is preferably 10% or more and 80% or less. When the light-transmitting decorative insert film 122 does not have the concealing layer 107 described below, the transmittance may be 70% or more. When the light-transmitting decorative insert film 122 has a visible light transmittance of 10% or more, the light from the display device (see FIG. 23) can easily pass through. The higher the transmittance of the light-transmitting decorative insert film 122, the more light from the back surface passes through, which is preferable. Note that the transmittance in this specification refers to the visible light transmittance value measured using, for example, a spectrophotometer (e.g., a UV-2100 spectrophotometer manufactured by Shimadzu Corporation).

[0191] The light-transmitting decorative insert film 122 includes a film 125 and a decorative print layer 108. The light-transmitting decorative insert film 122 is formed by decorating the film 125. The decorative print layer 108 is formed by printing on the film 125. FIG. 22 is a cross-sectional view showing an example of the layer structure of the light-transmitting decorative insert film 122. As shown in FIG. 22, the decorative print layer 108 may include a pattern layer 106 and a concealing layer 107. However, the structure of the light-transmitting decorative insert film 122 is not particularly limited as long as it is a decorative film with light transparency. For example, the resin layer 103 may be used instead of the concealing layer, and the concealing layer 107 of the light-transmitting decorative insert film 122 may be eliminated. Note that the concealing layer 107 may not be a layer formed by printing, but may be a colored film with holes.

[0192] The film 125 is a substrate that is transparent to visible light. The film 125 is made of a moldable material. Materials such as acrylic and acrylic / polycarbonate, which have high moldability and do not crack or break during molding, may be used for the film 125. However, the material is not particularly limited as long as it is moldable. The thickness of the film 125 is, for example, 25 μm to 250 μm. If necessary, a hard coat layer, anti-fingerprint layer, anti-reflection layer, or the like may be provided on the front side of the film 125 (the side opposite the design layer 106). However, the surface layer must be one that stretches without cracking during molding. The functional layer on the front side may be an after-cure type that is cured by UV exposure after molding. A light-transmitting decoration is printed on the back side of the film 125 (the side facing the design layer 106).

[0193] The pattern layer 106 is a layer on which the pattern to be expressed by the light-transmitting decorative insert film 122 is formed. The pattern of the pattern layer 106 is a pattern that appears on the surface of the decorative sheet when the display device 104 is turned off, and may be, for example, a wood grain pattern or an abstract pattern. The pattern layer 106 may be formed by printing on the film 125. Any printing method may be used for printing, such as Bravia printing, inkjet printing, screen printing, or offset printing. The material of the decorative ink used for printing may be inorganic pigments, organic pigments, or interference pigments, and any material may be used. The thickness of the pattern layer 106 is, for example, 1 μm to 100 μm.

[0194] The concealing layer 107 conceals the display device 104 when the power of the display device 104 is turned off, and also determines the color tone of the pattern. If the pattern layer 106 is an interference pigment, the concealing layer 107 is black or gray to improve color development, but if an inorganic pigment or the like is used, using black or gray will make the pattern difficult to see. Therefore, it is preferable to use a light color such as white for the concealing layer 107. If the pattern is wood grain, the concealing layer 107 can be a brownish color to change the color tone. It is preferable to keep the base concealing ability of the concealing layer to the minimum necessary and to increase the transmittance.

[0195] The concealing layer 107, together with the resin layer 103 described below, conceals the display device 104, so the concealing property of the concealing layer 107 itself may be kept low. The concealing layer 107 may be formed, for example, by printing a solid layer on the pattern layer 106. For example, a white solid layer may be printed as the concealing layer 107. The white solid layer has the effect of controlling the color tone of the pattern and preventing the pattern from sinking into the black background and becoming difficult to see. The concealing property may be reduced by lowering the printing density of the white solid printing and printing it thinly. The concealing property may be reduced. For example, a black solid layer may be printed as the concealing layer 107. The black solid layer has the effect of making the color of the interference pigment more visible and concealing the background. The concealing layer of the black solid layer may have low base concealing property by lowering the printing density and printing it thinly, or the concealing layer itself may be eliminated. Any printing method may be used, including Bravia printing, inkjet printing, screen printing, and offset printing. A further concealing layer may be partially formed on the concealing layer 107 to provide transparent and opaque areas. The print density at the boundary between the opaque and opaque areas may be changed in a gradational manner to eliminate any clear difference. The concealing layer 107 may be a layer formed by printing, a colored film, or a colored sheet. Similarly, a further concealing layer may be partially formed on the resin layer 103.

[0196] In addition, by using the resin layer 103 in place of the color base sheet that determines the color tone of the concealing layer or pattern, the solid color layer that controls the concealing layer or color tone may be eliminated from the configuration of the light-transmitting decorative insert film 122. The concealing layer 107 may be a laminate of a colored film instead of being printed. The thinner the colored film, the higher the light transmittance. A top coat layer may be present on the surface of the light-transmitting decorative insert film 122. The surface of the film 125 may be embossed. Printing may be either front printing or back printing.

[0197] Here, an example of a specific structure of the design layer 106 will be described with reference to Fig. 23. The design layer 106 shown in Fig. 23 includes a first color pattern layer 10 provided on one surface 4a of the film 125, and a second color pattern layer 20 provided on the first color pattern layer 10. Note that the configuration of the design layer 106 shown in Fig. 23 is similar to that of the design printed layer 5 shown in Fig. 2, and therefore a description thereof will be omitted.

[0198] As shown in FIG. 20 , the resin layer 103 has the function of attenuating light from the front side of the viewpoint that passes through the light-transmitting decorative insert film 122. The resin layer 103 is disposed on the back surface of the light-transmitting decorative insert film 122. In the display device 100, the resin layer 103 is disposed on the front surface side of the display device 104. The resin layer 103 is a colored, transparent resin molded layer having a predetermined transmittance. The transmittance of the resin layer 103 may be 10% or more, and may even be 18% or more. The transmittance of the resin layer 103 may also be 40% or less, and even 20% or less. The transmittance of the resin layer 103 is preferably 20% or less to enhance the base concealment ability. The lower the transmittance, the more the backside reflected light can be reduced. Therefore, if the brightness of the display device 104 installed on the back surface is high, it is preferable to lower the transmittance of the resin layer 103.

[0199] The resin layer 103 is formed by injection molding with the light-transmitting decorative insert film 122 inserted into a mold. The resin layer 103 is made of a smoked resin with a specified transmittance, which is achieved by adding an appropriate amount of pigment to a transparent resin. Resin pellets with adjusted transmittance by adding a pigment in advance may also be used as the resin for injection. By making the resin layer 103 smoked, the amount of transmitted light reflected at the boundary between the injection-molded resin layer 103 and the air layer on the back side and illuminating the pattern of the light-transmitting decorative insert film 122 from behind can be reduced.

[0200] The transparent resin of the resin layer 103 can be any transparent resin, such as acrylic, polycarbonate, or ABS. The pigment can be carbon black. Alternatively, the pigment can be an inorganic or organic colored pigment. For example, a carbon black-colored resin is preferably used to create a gray smoke color. However, to control the color tone of the pattern, a brown pigment can be added to create a brown smoke colored resin. However, when using a smoke color, the color tone of the LCD screen may change depending on the pigment, so it is recommended to adjust the RGB. If the LCD image appears blue, it is recommended to reduce the B gain and bias. If it appears red, it is recommended to reduce the R gain and bias. While inorganic pigments are preferred, organic pigments are also acceptable, and dyes can be used. The resin transmittance of the resin layer 103 depends on the thickness of the resin. Therefore, the transmittance of the smoke resin injected is measured, and an appropriate amount of pigment is added to the injected resin to achieve the specified transmittance.

[0201] The resin layer 103 is colored. The color of the resin layer 103 is not particularly limited, and any color may be used. When an image of the display device 104 is to be displayed, gray is preferable. The resin layer 103 may be of various colors, and may be a desired wall color; the color is not limited to the above. The color of the resin layer 103 may control the color tone of the light-transmitting decorative insert film 122 depending on the color of the resin layer 103. For example, when the display device 104 is turned off, the pattern of the pattern layer 106 of the light-transmitting decorative insert film 122 is visible in both the area with and without the display device 104. At this time, the color tone of the pattern of the pattern layer 106 is controlled by the color of the resin layer 103. For example, if the color of the resin layer 103 is brown and the pattern of the pattern layer 106 is wood grain, a brownish wood grain can be visible.

[0202] The lower the transmittance of the resin layer 103, the greater the effect of reducing reflected light. However, it is preferable to optimize the transmittance of the resin layer 103, taking into consideration factors such as the brightness of the display device 104. Changing the thickness of the resin layer 103 changes the transmittance of that portion, so it is preferable to keep the transmittance constant, but the thickness may also be changed. If changing the thickness changes the color tone, it is preferable to match the color tone by attaching a black sheet or painting it on the back side. If the resin layer 103 affects the color tone of the image on the display device 104, it is preferable to adjust the color tone by adjusting the RGB gain and bias of the display device 104. By adjusting the RGB bias and gain of the display device 104 of the display device 100 according to the color tone of the resin layer 103, white display may appear whiter through the resin layer 103.

[0203] Next, the injection molding method according to this embodiment will be described with reference to FIGS. 24 and 25 . FIG. 24 is a process diagram illustrating an example of the steps of the injection molding method. FIG. 25 is a schematic diagram illustrating the steps of the injection molding method. As shown in FIG. 24 , first, a light-transmitting decorative insert film 122 having a visible light transmittance of 10% or more and 80% or less is prepared by decorating a film 125 (step S10). A resin 140 for injection molding (see FIG. 25( e)) having a visible light transmittance of 40% or less is prepared by adding a pigment to a transparent resin (step S20). For example, acrylic pellets for injection molding and a carbon pigment are mixed and stirred while melting with heat to produce an acrylic resin for smoke. At this time, the amount of pigment is adjusted to achieve the specified transmittance.

[0204] Next, the light-transmitting decorative insert film 122 is molded (step S30). In step S30, the light-transmitting decorative insert film 122 is molded into a desired shape for insert molding. Specifically, as shown in FIG. 26( a), the flat light-transmitting decorative insert film 122 is first heated with a heater 141. Next, as shown in FIG. 26( b), the heated light-transmitting decorative insert film 122 is preformed by vacuum / pressure molding. As a result, the heated light-transmitting decorative insert film 122 takes on a shape corresponding to the molding surface of the mold 142. Here, the molded light-transmitting decorative insert film 122 is deformed to form two ridges. As shown in FIG. 26( c), unnecessary portions are trimmed from the molded light-transmitting decorative insert film 122.

[0205] Next, as shown in Fig. 24, the light-transmitting decorative insert film 122 is inserted into injection molding dies 150A and 150B (step S40). Specifically, as shown in Fig. 25(d), the heat-transmitting decorative insert film 122 is inserted into the molding space between the dies 150A and 150B. A flow path 151 for supplying the injection molding resin 140 is formed in the backside die 150A. The flow path 151 opens on the molding surface of the die 150A.

[0206] Next, as shown in Fig. 24, resin 140 is injected into molds 150A and 150B into which the light-transmitting decorative insert film 122 has been inserted, thereby forming an injection-molded product 101 (step S40). As shown in Fig. 25(e), the resin 140 is injected onto the back surface of the light-transmitting decorative insert film 122 from a flow path 151 in the mold 150A. As a result, a resin layer 103 is formed by injection molding on the back surface side of the light-transmitting decorative insert film 122. Once molding is complete, as shown in Fig. 25(f), the molds 150A and 150B are opened, and the injection-molded product 101 is removed.

[0207] For example, if the transmittance of smoked acrylic resin used as the injection molding resin 140 is adjusted to 20%, and the resin is injection molded into a light-transmitting decorative insert film 122 with a transmittance of 50%, the transmittance of the injection-molded product 101 will be 10%. After the injection molding is completed, the back side of the injection-molded product 101 may be painted black except for the window portion 135 for the display device 104. In this case, the injection-molded product 101 covers the display device 104 (see FIG. 21(a)), thereby concealing the display device 104.

[0208] Next, the functions and effects of the injection molding method, the injection molded product 101, and the display device 100 according to this embodiment will be described.

[0209] First, with reference to Figures 26 and 27, an injection-molded product 200 and a display device 300 according to a comparative example will be described. As shown in Figure 26, the injection-molded product 200 according to the comparative example includes a light-transmitting decorative insert film 122 and a transparent resin layer 132, but does not include a resin layer 103. Unlike the resin layer 103, the transparent resin layer 132 does not have its transmittance adjusted by adding a pigment, and has a transmittance of 93%. As shown in Figure 27, the display device 300 according to the comparative example has a display device 104 covered with the injection-molded product 200. At the boundary between the light-transmitting decorative layer insert film 122 and the transparent resin layer 132, a black printed portion 9 is formed, with the area other than a window portion 135 for the display device 104 painted black.

[0210] 26 and 27 , if the rear surface of the transparent resin layer 132 of the injection-molded product 200 is an air layer, incident light LIN incident from the front surface of the light-transmitting decorative insert film 122 is reflected by the rear surface of the transparent resin layer 132. As a result, reflected light LOUT1 at the air layer interface illuminates the light-transmitting decorative insert film 122 from the rear surface, causing the color tone of the light-transmitting decorative insert film 122 to fade. This phenomenon causes the color tone of the pattern on the light-transmitting decorative insert film 122 to fade, making the pattern less visible, and reducing the contrast of the image on the display device 104 viewed through the injection-molded product 200. Furthermore, when the display device 104 is OFF, the pattern layer is visible on the surface of the injection molded product 200, but in the case of the transparent resin layer 132, the reflected light LOUT1 from the display device 104 is brighter than the reflected light LOUT2 from the black printed portion 9, so the color tone of the pattern in the window portion 135 appears pale, and the presence of the window portion 135 is visible even when the display device 104 is not lit (see Figure 27 (b)).

[0211] In contrast, in the injection molding method according to the present embodiment, the resin 140 is injection molded with the light-transmitting decorative insert film 122 inserted into the molds 150A and 150B. Therefore, a resin layer 103 is formed by injection molding on the backside of the decorated light-transmitting decorative insert film 122, which has a transmittance of 10% or more and 80% or less. The injection-molded resin layer 103 is prepared by adding a pigment to a transparent resin to achieve a transmittance of 40% or less. Therefore, even if light irradiated from the front side of the light-transmitting decorative insert film 122 is reflected by the air layer on the backside of the resin layer 103, the reflected light is reduced. This reduces the amount of light illuminating the backside of the light-transmitting decorative insert film 122, thereby preventing the color tone of the decorative pattern from fading. Furthermore, by reducing the transmittance of the resin used for injection molding, the base concealment ability is improved, thereby concealing the presence of a display device 104 even if it is present inside. Furthermore, by using a smoked resin for the resin used in injection molding, it is possible to eliminate the need for a concealing layer or a colored layer in the light-transmitting decorative insert film 122 itself.

[0212] 21(a), when the resin layer 103 is used, the difference in brightness between the reflected light LOUT1 at the window portion 135 corresponding to the display device 104 and the reflected light LOUT2 at the black printed portion 9 is small. Therefore, the color tone of the window portion 135 does not become bright (see FIG. 21(b)), so the presence of the window portion 135 can be concealed when the display device 104 is turned off. Furthermore, in the case of an image display device such as the display device 104, a decrease in the contrast of the image projected on the surface of the injection-molded product 101 can be prevented.

[0213] In the injection molding method, the pigment may be a mixture of multiple colors, or a single color pigment may be used. To eliminate color variations, the raw material is preferably a single color, black. The single color pigment may be carbon black. In this case, adding an appropriate amount of carbon to the transparent resin can make the resin 140 for injection molding a gray smoke color with a transmittance of 40% or less.

[0214] In the injection molding method, the pigment may be an inorganic or organic color pigment, which can color the smoke resin and thereby control the color tone of the light-transmitting decorative insert film 122.

[0215] The injection-molded product 101 according to this embodiment is molded by the above-described injection molding method, and in this case, it is possible to provide an injection-molded product 101 in which the color tone of the pattern on the light-transmitting decorative insert film 122 is not diluted by backside reflection.

[0216] The display device 100 includes the above-described injection molded product 101 and a display device 104. In this case, the display device 104 can be concealed while preventing the color tone of the pattern on the light-transmitting decorative insert film 122 from fading.

[0217] When the pattern layer 106 of the light-transmitting decorative insert film 122 is formed by printing with an interference pigment, the interference pigment itself has no color, and light transmitted through the backside is not affected by the color of the pattern. Therefore, the image on the display device 104 on the backside can be transmitted without being overlaid with the color of the pattern. Even without an interference pigment, if the concealing layer 107 does not block light, the pattern layer 106 can be light-transmitting, but the image will be overlaid with the image, making it difficult to display clearly. However, designs such as switches, numbers, and text information remain visible even if the image is overlaid. It is preferable to select the ink material for the pattern layer 106 according to the application. When using an interference pigment, the concealing layer 107 may be formed in gray smoke to improve color development. However, a gray smoke resin for the injection-molded resin layer 103 can be used as a concealing layer instead.

[0218] The injection molded product, the display device, and the display method according to the present disclosure are not limited to the above-described embodiments, and various other modifications are possible.

[0219] For example, the second color pattern layer may include a first interference pigment of a plurality of colors that generate different first interference lights, and the first color pattern layer may include a second interference pigment that generates a single color second interference light that is different from the mixed color exhibited by the plurality of first interference pigments. Also, in each of the above embodiments, the first color pigment chips are first interference pigments of two colors, but the first color pigment chips may be first interference pigments of three or more colors.

[0220] The shape of the injection molded product is not limited to the shape shown in Fig. 20. For example, the back surface of the resin layer 103 may be flat without being curved.

[0221] [Third Disclosure] Conventionally, decorative sheets have been known as decorative sheets for walls, etc., which include a substrate and a printed layer provided on the surface of the substrate, and the printed layer has a pattern such as a wood grain pattern or an abstract pattern. On a wall surface to which this decorative sheet is provided, the pattern is always visible. Meanwhile, it is required that the visible pattern change depending on whether or not a light source installed on the back side of the decorative sheet is used.

[0222] For example, Japanese Patent No. 5725581 discloses a display device having a light source under a decorative sheet, in which a pattern is visible due to reflected light from a printing layer made of RGB interference pigments when the light source is off, and a pattern is visible due to transmitted light from a CMY printing layer when the light source is on (see FIG. 11 of Japanese Patent No. 5725581). Also, Japanese Patent No. 6839319 discloses a decorative sheet having two patterns using interference pigments, in which the patterns are visible when the image on the back side is not displayed, and the images are visible when the image on the back side is displayed (see FIGS. 1 and 2 of Japanese Patent No. 6839319).

[0223] The printed matter described in Japanese Patent No. 5725581 includes a first color pattern layer, a second color pattern layer, and a third color pattern layer, each containing a red interference pigment, a green interference pigment, or a blue interference pigment as pigment chips. This printed matter has a larger number of pattern layers to achieve more vivid colors than conventional printing. The decorative sheet described in Japanese Patent No. 6839319 includes a first design layer containing multiple types of interference pigments and exhibiting a first mixed color, and a second design layer containing multiple types of interference pigments and exhibiting a second mixed color different from the first mixed color. Because the first and second design layers each contain multiple types of interference pigments, this decorative sheet can complicate color matching and registration during printing.

[0224] The present disclosure is intended to solve the above-mentioned problems, and aims to provide a molded product that can express a three-dimensional pattern even with a small number of printed layers on the decorative sheet, and that has excellent manufacturing efficiency by simplifying the color matching and registration work when printing the decorative sheet.

[0225] One aspect of the present disclosure includes the following [1] to [9]: [1] A photosensitive resin composition comprising a resin molded body and a decorative sheet disposed on a surface of the resin molded body, wherein the resin molded body and the decorative sheet are visible light transmissive, the decorative sheet comprising a base layer and a picture printed layer, the picture printed layer comprising: a first color pattern layer provided on one surface of the base layer and constituted by a plurality of first color dots, and a second color pattern layer provided on the first color pattern layer and constituted by a plurality of second color dots, wherein each of the plurality of first color dots comprises a first color binder and a plurality of first color pigment chips dispersed within the first color binder, and each of the plurality of second color dots comprises a second color binder and a plurality of second color pigment chips dispersed within the second color binder, and either one of the plurality of first color pigment chips or the plurality of second color pigment chips is a first interference pigment of a plurality of colors that respectively generate first interference light different from each other,

[0013] The molded product according to [1], wherein the other of the plurality of first color pigment chips and the plurality of second color pigment chips is a second interference pigment that generates a second interference light of a single color different from the mixed color exhibited by the plurality of first interference pigments, and the plurality of first interference lights and the second interference light are additively mixed. [2] The molded product according to [1], which is an injection molded product. [3] The molded product according to [1], which is a TOM molded product.[4] A molded product formed only from a decorative sheet, wherein the decorative sheet is visible light transmissive, the decorative sheet comprises a base layer and a picture print layer, the picture print layer being provided on one surface of the base layer and comprising a first color pattern layer constituted by a plurality of first color dots, and a second color pattern layer being provided on the first color pattern layer and constituted by a plurality of second color dots, wherein each of the plurality of first color dots comprises a first color binder and a plurality of first color pigment chips dispersed within the first color binder, and each of the plurality of second color dots comprises a second color binder and a plurality of second color pigment chips dispersed within the second color binder, and either one of the plurality of first color pigment chips or the plurality of second color pigment chips is a first interference pigment of a plurality of colors that respectively generate first interference lights that are different from each other, A molded product, wherein the other of the plurality of first color pigment chips and the plurality of second color pigment chips is a second interference pigment that generates a second interference light of a single color different from the mixed color exhibited by the plurality of first interference pigments, and the plurality of first interference lights and the second interference light are additively mixed. [5] The molded product according to any one of [1] to [4], wherein the decorative sheet further comprises a white pattern layer provided on the second color pattern layer and composed of a plurality of silver dots, each of the plurality of silver dots including a silver binder and a plurality of silver pigment chips dispersed within the silver binder. [6] The molded product according to any one of [1] to [5], wherein the decorative sheet further comprises a transparent smoke print layer provided on the outermost surface of the picture print layer on the side opposite the base layer. [7] The molded product according to any one of [1] to [6], wherein the first interference pigment and the second interference pigment each include titanium dioxide-coated mica having a particle size of 25 μm or more and 60 μm or less. [8] The molded product according to any one of [1] to [7], wherein the content of the plurality of first color pigment chips is 0.5 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of the first color binder, and the content of the plurality of second color pigment chips is 0.5 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of the second color binder.[9] A display device comprising the molded article according to any one of [1] to [8] and a light source.

[10] The display device according to [9], wherein the light source is a display device.

[0226] According to the present disclosure, it is possible to produce a three-dimensional pattern even with a small number of printed layers on the decorative sheet, and by simplifying the color matching and registration work when printing the decorative sheet, it is possible to provide a molded product with excellent manufacturing efficiency.

[0227] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the following description, the same elements in the drawings will be assigned the same reference numerals, and duplicate explanations will be omitted. Note that the drawings are schematic, and for example, the relationship between thickness and planar dimensions and the thickness ratio of each layer may differ from the actual ones. Furthermore, the embodiments shown below exemplify configurations for embodying the technical idea of ​​the present disclosure, and the technical idea of ​​the present disclosure is not limited to the materials, shapes, structures, etc. of the components described below.

[0228] [Embodiment 3-1] <Display Device, Molded Article> FIG. 28 is a cross-sectional view schematically showing a display device according to embodiment 3-1. The cross-sectional view schematically showing the picture print layer provided on the printed matter (decorative sheet) of the display device shown in FIG. 28 is the same as FIG. 2 described above. As shown in FIG. 28 , the display device 1 includes a molded article 7 and a light source 3. The molded article 7 includes a printed matter 2 (decorative sheet) and a resin molded body 206. The printed matter 2 (decorative sheet) is a sheet for expressing a picture, and includes a translucent substrate 4 (substrate layer), a picture print layer 5, and a translucent smoke print layer 30. The printed matter 2 (decorative sheet) is disposed on the surface of the resin molded body 206 and is provided in front of the light source 3 (between the viewer and the light source 3). The resin molded body 206 and the printed matter 2 (decorative sheet) are visible light transmissive. Therefore, when the power of the light source 3 is ON, the viewer can see the light from the light source 3 that has passed through the resin molded body 206 and the printed matter 2 (decorative sheet), and when the power of the light source 3 is OFF, the viewer can see the image expressed by the printed matter 2 (decorative sheet). The light source 3 is, for example, a display device.

[0229] <Resin Molded Product> The resin molded product has visible light transparency. The resin constituting the resin molded product may be any resin that has visible light transparency, such as PET, PMMA, polyethylene, polypropylene, nylon, etc. The resin molded product may contain a thermoplastic resin that has visible light transparency, from the viewpoint of easily obtaining a molded product having a complex shape.

[0230] The resin molded product may further contain components other than resin, such as additives such as fillers, antistatic agents, ultraviolet absorbers, plasticizers, and lubricants.

[0231] <Decorative sheet> The light-transmitting substrate 4 (substrate layer) is a substrate that is visible light transmissive. The light-transmitting substrate 4 (substrate layer) contains, for example, a resin that is visible light transmissive. Examples of resins that are visible light transmissive include PET, PMMA, polyethylene, polypropylene, nylon, polycarbonate (PC), ABS, etc. The visible light transmissive resin may contain a thermoplastic resin that is visible light transmissive, from the viewpoint of facilitating the production of molded products with complex shapes.

[0232] The thickness of the light-transmitting substrate 4 (substrate layer) may be 25 μm or more, 50 μm or more, or 75 μm or more, from the viewpoint of ensuring sufficient strength of the printed matter 2 (decorative sheet). The thickness of the light-transmitting substrate 4 (substrate layer) may be 500 μm or less, 350 μm or less, or 250 μm or less, from the viewpoint of preventing the printed matter 2 (decorative sheet) from becoming excessively thick. The printed matter 2 (decorative sheet) may have a surface protective layer provided on the surface side (the side opposite the picture printed layer 5) of the light-transmitting substrate 4 (substrate layer).

[0233] The picture printed layer 5 is a layer that expresses the picture of the printed matter 2 (decorative sheet). The picture printed layer 5 comprises a first color pattern layer 10 provided on one surface 4a of the light-transmitting substrate 4 (substrate layer), and a second color pattern layer 20 provided on the first color pattern layer 10. With regard to the printed matter 2 (decorative sheet), a configuration similar to that described with reference to FIG. 2 in the first disclosure is applied. Note that a molded product 7 including the printed matter 2 (decorative sheet) can express a three-dimensional picture even with a small number of printed layers of the decorative sheet, and can achieve excellent manufacturing efficiency by simplifying the color matching and registration work when printing the decorative sheet.

[0234] In the third embodiment, the printed matter 2 (decorative sheet) of the molded product 7 includes a transparent smoke printed layer 30 provided on the second color pattern layer 20. This provides better color development between the first color pattern layer 10 and the second color pattern layer 20. Furthermore, because the transparent smoke printed layer 30 is transparent, a decrease in the visibility of the image on the display device 1 is effectively suppressed.

[0235] In the third embodiment, each of the first interference pigments 14a, 14b and the second interference pigment 24 contains titanium dioxide-coated mica having a particle size of 25 μm or more and 60 μm or less. By containing titanium dioxide-coated mica having a particle size of 25 μm or more, it is possible to improve the transparency and color development of the picture-printed layer 5. By containing titanium dioxide-coated mica having a particle size of 60 μm or less, it is possible to prevent a decrease in the resolution and gradation of the picture-printed layer 5.

[0236] In embodiment 3-1, the content of the plurality of first color pigment chips 13 may be 0.5 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of the first color binder 12, and the content of the plurality of second color pigment chips 23 may be 0.5 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of the second color binder. Because the content of the plurality of first color pigment chips 13 is within the range of 0.5 parts by mass or more, the design of the first color pattern layer 10 is well expressed. Because the content of the plurality of first color pigment chips 13 is within the range of 20 parts by mass or less, a decrease in the coating properties and transparency of the first color pattern layer 10 can be suppressed. Similarly, because the content of the plurality of second color pigment chips 23 is within the range of 0.5 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of the second color binder 22, a decrease in the coating properties and transparency of the second color pattern layer 20 can be suppressed while the design of the second color pattern layer 20 is well expressed.

[0237] In the third embodiment, the total light transmittance of the printed matter 2 (decorative sheet) may be 30 to 70%. If the total light transmittance is 30% or more, when the printed matter 2 (decorative sheet) is placed in front of a screen, the picture printed layer 5 becomes less visible due to the light from the image on the screen, and the image becomes more clearly visible. If the total light transmittance is 70% or less, the picture in the picture printed layer 5 can be prevented from appearing dark even when the screen is black.

[0238] In the third embodiment, an adhesive layer may be provided between the resin molded body 206 and the printed matter 2 (decorative sheet), thereby improving the adhesion between the resin molded body 206 and the printed matter 2 (decorative sheet).

[0239] In the third embodiment, the molded article may be, for example, an automobile component, an electrical appliance component, or a wall component, but is not limited to these uses.

[0240] In the third embodiment, the display device 1 includes a molded article 7 and a light source 3. With the display device 1, when the light source 3 is not lit, the pattern of the pattern printed layer 5 of the molded article 7 is visible, and when the light source 3 is lit, transmitted light from the light source 3 (pattern display, video display, etc.) is visible.

[0241] In the third embodiment, the light source 3 may be a display device. In this case, when the display is not lit, the pattern of the pattern-printed layer 5 of the molded product 7 is visible, and when the display is lit, transmitted light from the display (pattern display, video display, etc.) is visible.

[0242] <Method for manufacturing molded article> The molded article is molded into a three-dimensional shape by, for example, injection molding. That is, the molded article may be an injection-molded article. When the molded article is injection-molded, the adhesion between the resin molded body and the decorative sheet is excellent. Specifically, the molded article may be a film insert molded article or an in-mold molded article.

[0243] When the molded article is a film insert molded article, it can be obtained by the following procedure. That is, first, the decorative sheet is heated to soften it, and then molded using a mold. Next, the decorative sheet is trimmed as necessary, and then inserted into the molding die. The resin that will make up the resin molded body is inserted into the molding die with the decorative sheet inserted, and injection molding is performed, and then the mold is released to obtain the molded article.

[0244] When the molded product is an in-mold molded product, it can be obtained by the following procedure. First, a decorative sheet is fed into a mold, and after the decorative sheet is fixed, it is suctioned so that it conforms to the shape of the mold. Next, the mold is closed, and the resin that will form the resin molded product is inserted and injection molded. The mold is then opened to obtain the molded product.

[0245] The molded article is formed into a three-dimensional shape by, for example, vacuum forming and / or pressure forming. By forming the molded article by vacuum forming and / or pressure forming, the time and effort required to remove burrs from the decorative sheet when producing the molded article is reduced, resulting in excellent manufacturing efficiency. Specifically, the molded article may be a TOM (Three Dimension Overlay Method) molded article.

[0246] When the molded product is a TOM molded product, the molded product can be obtained by the following procedure. That is, first, a resin molded body is produced. The produced resin molded body is placed in the lower chamber of a TOM molding device. A decorative sheet is placed between the lower and upper chambers of the device, and after sealing, the decorative sheet is heated to soften. Next, the lower chamber of the device is evacuated, and the upper chamber is pressurized to push up the resin molded body. The decorative sheet is transferred to match the shape of the resin molded body, and a molded product can be obtained.

[0247] [3-2 Embodiment] A molded product 7A according to 3-2 embodiment will be described below with reference to Fig. 29 and Fig. 4. Note that in the description of 3-2 embodiment, descriptions that overlap with the above 3-1 embodiment will be omitted, and only differences from the above 3-1 embodiment will be described. In other words, to the extent technically possible, the descriptions of the above 3-1 embodiment may be used appropriately in 3-2 embodiment.

[0248] Figure 29 is a cross-sectional view schematically showing a molded article according to embodiment 3-2. Figure 4 described above also corresponds to a cross-sectional view schematically showing a white pattern layer provided on the decorative sheet shown in Figure 29. The printed matter 2A (decorative sheet) comprises a light-transmitting substrate 4 (substrate layer) and a picture print layer 5. The printed matter 2A (decorative sheet) further comprises a white pattern layer 40 provided on the second color pattern layer 20. The same configuration as that described with reference to Figure 4 in the first disclosure is applied to the printed matter 2A (decorative sheet).

[0249] [3-3 Embodiment] A molded product 7B according to 3-3 embodiment will be described below with reference to Fig. 30. Note that in the description of 3-3 embodiment, descriptions that overlap with the above 3-1 and 3-2 embodiments will be omitted, and only differences from the above 3-1 and 3-2 embodiments will be described. In other words, to the extent technically possible, the descriptions of the above 3-1 and 3-2 embodiments may be used appropriately in 3-3 embodiment.

[0250] 30 is a cross-sectional view schematically showing a molded article according to embodiment 3-3. The printed matter 2B (decorative sheet) of molded article 7B comprises a light-transmitting substrate 4 (substrate layer) and a picture print layer 5. In other words, the printed matter 2B (decorative sheet) does not comprise a translucent smoke print layer 30 or a white pattern layer 40. Even with the configuration of the printed matter 2B (decorative sheet) described above, the same effects as those of embodiment 3-1 can be achieved.

[0251] [3-4 Embodiment] A molded product 7C according to 3-4 embodiment will be described below with reference to Fig. 31. Note that in the description of 3-4 embodiment, descriptions that overlap with the above 3-1, 3-2, and 3-3 embodiments will be omitted, and only differences from the above 3-1, 3-2, and 3-3 embodiments will be described. In other words, to the extent technically possible, the descriptions of the above 3-1, 3-2, and 3-3 embodiments may be used appropriately in 3-4 embodiment.

[0252] 31 is a cross-sectional view schematically showing a molded article according to Embodiment 3-4. The printed matter 2C (decorative sheet) of the molded article 7C comprises a light-transmitting substrate 4 (substrate layer), a picture printed layer 5, a white pattern layer 40, and a transmissive smoke printed layer 30. The white pattern layer 40 is provided on the second color pattern layer 20, and the transmissive smoke printed layer 30 is provided on the white pattern layer 40. Even with the configuration of the printed matter 2C (decorative sheet) described above, the same effects as those of the above-described Embodiments 3-1, 3-2, and 3-3 can be achieved.

[0253] The display device and molded product according to the present disclosure are not limited to the above-described embodiments, and various modifications are possible. For example, the second color pattern layer may include a first interference pigment of multiple colors that generate different first interference lights, and the first color pattern layer may include a second interference pigment that generates a single-color second interference light that is different from the mixed color of the multiple first interference pigments. Furthermore, although the above embodiments each include a first interference pigment of two colors, the first color pigment chip may also include a first interference pigment of three or more colors.

[0254] [Fifth embodiment] The decorative sheet described above may be capable of three-dimensional molding by forming. Furthermore, the molded product may not include a resin molded body and may be composed of only a decorative sheet. That is, another embodiment of the present disclosure is a molded product of the decorative sheet described above by forming, specifically, a molded product formed only from a decorative sheet, wherein the decorative sheet is visible light transmissive, and the decorative sheet includes a base layer and a picture print layer, the picture print layer having a first color pattern layer provided on one side of the base layer and composed of a plurality of first color dots, and a second color pattern layer provided on the first color pattern layer and composed of a plurality of second color dots, each of the plurality of first color dots being composed of a first color binder and a plurality of dots dispersed within the first color binder. a first color pigment chip, each of the plurality of second color dots including a second color binder and a plurality of second color pigment chips dispersed within the second color binder, one of the plurality of first color pigment chips and the plurality of second color pigment chips being a first interference pigment of a plurality of colors that respectively generate first interference lights that are different from each other, and the other of the plurality of first color pigment chips and the plurality of second color pigment chips being a second interference pigment that generates a single-color second interference light that is different from the mixed color exhibited by the plurality of first interference pigments, and the molded product additively mixes the plurality of first interference lights and the second interference light.

[0255] For the formed product, the descriptions of the above-mentioned Embodiments 3-1, 3-2, and 3-3 may be appropriately used in Embodiment 3-4 to the extent technically possible.

[0256] The formed product can be obtained by vacuum forming, pressure forming, or press forming the decorative sheet. As the specific forming method, a known method can be applied.

[0257] 32 to 34, an application example of the technology illustrated in FIGS. 1 to 31 will be described. FIG. 32 is a front view showing an in-vehicle device 500 including a display device 1. An example of the in-vehicle device 500 is an in-vehicle console. FIG. 33 is an exploded perspective view of the in-vehicle device 500. FIG. 34 is a cross-sectional view of the in-vehicle device 500. The in-vehicle device 500 is an operation panel installed inside an automobile. As shown in FIG. 32, the in-vehicle device 500 includes an image transmission portion 501A, an image transmission portion 501B, and a handle 502 on a surface 500a. The image transmission portions 501A and 501B display an image on the surface 500a when the display device is turned on, and display a pattern on the surface 500a when the display device is turned off.

[0258] As shown in FIGS. 33 and 34 , the in-vehicle device 500 includes, in order from the front surface 500a, a printed matter 2 (decorative sheet), a sheet tape 503, an acrylic plate 504, an adhesive layer 508, a light source 3 serving as a display device, and a housing 506. The sheet tape 503 bonds the printed matter 2 (decorative sheet) to the acrylic plate 504. The adhesive layer 508 is formed of, for example, OCA and bonds the acrylic plate 504 to the light source 3. The housing 506 supports each component. As shown in FIG. 33 , the housing 506 has housings 507A and 507B at positions corresponding to the image transmission portions 501A and 501B. The housing 507A houses the light source 3 and acrylic plate 504 corresponding to the image transmission portion 501A. The housing 507B houses the light source 3 and acrylic plate 504 corresponding to the image transmission portion 501B. The printed matter 2 (decorative sheet) is bonded to the surface of the housing 506 so as to conceal the light sources 3 of these housing sections 507A and 507B and the entire surface of the housing 506.

[0259] Additionally, the above-described technology may be applied to an in-vehicle device 510 shown in Fig. 35 . The in-vehicle device 510 is provided on the rear side of a seat 511 in a vehicle. The in-vehicle device 510 houses a light source 3, which is a display device, inside, and has a printed material 2 (decorative sheet) that covers the light source 3. The in-vehicle device 51 has an image transmission portion 512 on a rear surface 510a that is at eye height for a passenger in the rear seat. The image transmission portion 512 displays an image on the rear surface 510a when the display device is turned on, and displays a pattern on the rear surface 510a when the display device is turned off.

[0260] Additionally, the above-described technology may be applied to an in-vehicle device 520 shown in FIG. 36 . The in-vehicle device 520 is provided in a door handle 521 inside a vehicle. The in-vehicle device 520 houses a light source 3 serving as a display device therein and has a printed material 2 (decorative sheet) covering the light source 3. The in-vehicle device 520 has an image transmission portion 522 on an upper surface 520a of the door handle 521. The image transmission portion 522 displays an image on the upper surface 520a when the display device is turned on, and displays a pattern on the upper surface 520a when the display device is turned off. The in-vehicle device 520 is configured as a door switch. When the in-vehicle device 520 opens or closes the door, an operation screen related to the door opening and closing operation is displayed on the image transmission portion 522. At other times, the in-vehicle device 520 turns off the display device to conceal the display device.

[0261] REFERENCE SIGNS LIST 1...display device, 2, 2A, 2B, 2C...printed matter (decorative sheet), 3...light source, 4...light-transmitting substrate, 5...picture printed layer, 206...resin molded body, 7, 7A, 7B, 7C...molded article, 10...first color pattern layer, 11...first color dot, 12...first color binder, 13...first color pigment chip, 14a, 14b...first interference pigment, 15a, 15b...first interference light, 20...second color pattern layer, 21...second color dot, 22...second color binder, 23...second color pigment chip, 24...second interference pigment, 25...second interference light Light-transmitting, 30...transmissive smoke printing layer, 40...white pattern layer, 41...silver dots, 42...silver binder, 43...silver pigment chips, 50...liquid crystal panel, 52...display unit, 54...periphery, 57...processing unit, 58...resin layer, 60...light-transmitting substrate for panel (light-transmitting substrate), 70...display device, 100...display device, 101...injection molded product, 122...light-transmitting decorative insert film, 103...resin layer, 104...display device, 140...resin, 150A, 150B...mold.

Claims

1. A display device comprising a resin molded body and a decorative sheet disposed on a surface of the resin molded body, the resin molded body and the decorative sheet being visible light transmissive, the decorative sheet comprising a base layer and a picture print layer, the picture print layer comprising a first color pattern layer provided on one surface of the base layer and constituted by a plurality of first color dots, and a second color pattern layer provided on the first color pattern layer and constituted by a plurality of second color dots, each of the first color dots comprising a first color binder and a plurality of first color pigment chips dispersed within the first color binder, each of the second color dots comprising a second color binder and a plurality of second color pigment chips dispersed within the second color binder, one of the first color pigment chips and the second color pigment chips being a first interference pigment of a plurality of colors that each generate a first interference light that is different from each other, The other of the plurality of first color pigment chips and the plurality of second color pigment chips is a second interference pigment that generates a second interference light of a monochrome color different from the mixed color exhibited by the plurality of first interference pigments, and a molded product that additively mixes the plurality of first interference lights and the second interference light.

2. The molded article according to claim 1, which is an injection molded article.

3. The molded article according to claim 1, which is a TOM molded article.

4. A molded product formed only from a decorative sheet, the decorative sheet being visible light transmissive, the decorative sheet comprising a base layer and a picture-printed layer, the picture-printed layer comprising a first color pattern layer provided on one surface of the base layer and constituted by a plurality of first color dots, and a second color pattern layer provided on the first color pattern layer and constituted by a plurality of second color dots, each of the plurality of first color dots comprising a first color binder and a plurality of first color pigment chips dispersed within the first color binder, each of the plurality of second color dots comprising a second color binder and a plurality of second color pigment chips dispersed within the second color binder, one of the plurality of first color pigment chips and the plurality of second color pigment chips being a first interference pigment of a plurality of colors that each generate a first interference light that is different from each other, The other of the plurality of first color pigment chips and the plurality of second color pigment chips is a second interference pigment that generates a second interference light of a monochrome color different from the mixed color exhibited by the plurality of first interference pigments, and a molded product that additively mixes the plurality of first interference lights and the second interference light.

5. A molded product according to any one of claims 1 to 4, wherein the decorative sheet further comprises a white pattern layer provided on the second color pattern layer and composed of a plurality of silver dots, each of the plurality of silver dots comprising a silver binder and a plurality of silver pigment chips dispersed within the silver binder.

6. A molded product according to any one of claims 1 to 4, wherein the decorative sheet further comprises a transparent smoke printed layer provided on the outermost surface opposite the base material layer with respect to the picture printed layer.

7. A molded article according to any one of claims 1 to 4, wherein the first interference pigment and the second interference pigment each contain titanium dioxide-coated mica having a particle size of 25 μm or more and 60 μm or less.

8. A molded product described in any one of claims 1 to 4, wherein the content of the multiple first color pigment chips is 0.5 parts by mass or more and 20 parts by mass or less per 100 parts by mass of the first color binder, and the content of the multiple second color pigment chips is 0.5 parts by mass or more and 20 parts by mass or less per 100 parts by mass of the second color binder.

9. A display device comprising the molded article according to any one of claims 1 to 4 and a light source.

10. The display device of claim 9, wherein the light source is a display device.

11. An injection molding method comprising the steps of: decorating a film to prepare a light-transmitting decorative insert film having a visible light transmittance of 10% or more and 80% or less; preparing a resin having a visible light transmittance of 40% or less by adding a pigment to a transparent resin; inserting the light-transmitting decorative insert film into a mold; and injecting the resin into the mold to form an injection-molded product.

12. The injection molding method according to claim 11, wherein said pigment is carbon black.

13. The injection molding method according to claim 11, wherein the pigment is an inorganic or organic color pigment.

14. An injection-molded product produced by the injection molding method according to any one of claims 11 to 13.

15. A display device comprising the injection molded product according to claim 14 and a display device.

16. A liquid crystal panel comprising at least a light-transmitting substrate and a picture-printed layer, wherein the picture-printed layer is provided on one side of the light-transmitting substrate and includes a pattern layer composed of a plurality of dots, each of the plurality of dots including a binder and a plurality of pigment chips dispersed within the binder, the plurality of pigment chips being interference pigments, the other side of the light-transmitting substrate opposite the picture-printed layer having a light-transmitting display section and an outer periphery on the outer periphery of the display section, a processing section which has been subjected to an anti-glare treatment is formed in the display section, and a resin layer which has been embossed with an ultraviolet-curable resin is formed in the outer periphery.

17. The liquid crystal panel according to claim 16, wherein the anti-glare treatment is performed by using a shot blasting process.

18. The liquid crystal panel described in claim 16, further comprising a white pattern layer formed on the picture print layer and composed of a plurality of silver dots, each of the plurality of silver dots including a silver binder and a plurality of silver pigment chips dispersed within the silver binder.

19. The liquid crystal panel according to claim 16, further comprising a transmissive smoke printed layer provided on the outermost surface of said picture printed layer on the side opposite to said light-transmissive substrate.

20. The liquid crystal panel described in claim 16, wherein the pattern layer comprises: a first color pattern layer formed on one side of the translucent base material and composed of a plurality of first color dots; and a second color pattern layer formed on the first color pattern layer and composed of a plurality of second color dots, wherein each of the first color dots comprises a first color binder and a plurality of first color pigment chips dispersed within the first color binder, each of the second color dots comprises a second color binder and a plurality of second color pigment chips dispersed within the second color binder, wherein one of the first color pigment chips and the second color pigment chips develops color as interference light on the reflected light side and includes interference pigments of a plurality of different colors, and the other of the first color pigment chips and the second color pigment chips develops color as interference light on the reflected light side and includes one type of interference pigment having a color different from the mixed color exhibited by the interference pigments of the multiple colors included in either one of the first color pigment chips, and wherein the interference light is additively mixed.

21. The liquid crystal panel described in claim 16, wherein the pattern layer comprises: a first color pattern layer composed of a plurality of first color dots provided on one side of the translucent substrate; and a second color pattern layer composed of a plurality of second color dots provided on the first color pattern layer, each of the first color dots including a first color binder and a plurality of first color pigment chips dispersed within the first color binder, each of the second color dots including a second color binder and a plurality of second color pigment chips dispersed within the second color binder, the plurality of first color pigment chips are a first interference pigment that generates a monochromatic first interference light, and the plurality of second color pigment chips are a second interference pigment that generates a monochromatic second interference light different from the color represented by the first interference pigment, and the first interference light and the second interference light are additively mixed.

22. The liquid crystal panel described in claim 16, wherein the pattern layer comprises: a first color pattern layer formed of a plurality of first color dots and provided on one side of the translucent base material; and a second color pattern layer formed of a plurality of second color dots and provided on the first color pattern layer, wherein each of the first color dots includes a first color binder and a plurality of first color pigment chips dispersed within the first color binder, each of the second color dots includes a second color binder and a plurality of second color pigment chips dispersed within the second color binder, either of the plurality of first color pigment chips and the plurality of second color pigment chips is a first interference pigment of a plurality of colors that respectively generate first interference lights different from each other, and the other of the plurality of first color pigment chips and the plurality of second color pigment chips is a second interference pigment that generates a monochromatic second interference light of the same color as any of the plurality of first interference pigments, and the plurality of first interference lights and the second interference lights are additively mixed.

23. A display device comprising a liquid crystal panel according to any one of claims 16 to 22 and a display device.

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