Molded articles and display devices

Abstract

To provide a molded product, with which it is possible to express a three-dimensional pattern even by a small number of printed layers of a decorative sheet, and which has excellent producibility by simplifying a color matching operation and a registration operation when printing the decorative sheet.SOLUTION: A molded product includes 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 have visible light transmittance. The decorative sheet includes a base material layer and a pattern printed layer. The molded product may be an injection molded product or a TOM molded product.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a molded article and a display device. [Background technology]

[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 equipped with 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). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5725581 [Patent Document 2] Patent No. 6839319 Summary of the Invention [Problem to be solved by the invention]

[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 produce 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 invention 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. [Means for solving the problem]

[0007] One aspect of the present invention includes the following [1] to [9]. [1] A resin molded body and a decorative sheet disposed on the surface of the resin molded body, the resin molded body and the decorative sheet are visible light transmissive, The decorative sheet comprises a substrate layer and a pattern printed layer, The picture printed layer is provided on one surface of the base material layer, and a first color pattern layer is formed by a plurality of first color dots; a second color pattern layer provided on the first color pattern layer and configured by 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 within the first color binder; each of the plurality of second color dots includes 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 is a first interference pigment of a plurality of colors that respectively generate first interference light beams 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 single color different from the mixed color exhibited by the plurality of first interference pigments; A molded product that additively mixes the plurality of first interference lights and the second interference light. [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, The decorative sheet has visible light transparency, The decorative sheet comprises a substrate layer and a pattern printed layer, The picture printed layer is provided on one surface of the base material layer, and a first color pattern layer is formed by a plurality of first color dots; a second color pattern layer provided on the first color pattern layer and configured by 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 within the first color binder; each of the plurality of second color dots includes 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 is a first interference pigment of a plurality of colors that respectively generate first interference light beams 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 single color different from the mixed color exhibited by the plurality of first interference pigments; A molded product that additively mixes the plurality of first interference lights and the second interference light. [5] The decorative sheet further includes a white pattern layer formed on the second color pattern layer and composed of a plurality of silver dots; The molded product according to any one of [1] to [4], wherein each of the plurality of silver dots comprises a silver binder and a plurality of silver pigment chips dispersed within the silver binder. [6] The decorative sheet further comprises a transparent smoke printed layer provided on the outermost surface of the pattern printed layer opposite the base material layer, the molded product being described in any one of [1] to [5]. [7] The molded article according to any one of [1] to [6], 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] 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 with respect to 100 parts by mass of the first color binder, The molded product according to any one of [1] to [7], wherein 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 per 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. [Effects of the Invention]

[0008] According to the present invention, a three-dimensional pattern can be expressed even with a small number of printed layers of the decorative sheet, and a molded product with excellent manufacturing efficiency can be provided by simplifying the color matching and registration work when printing the decorative sheet. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a cross-sectional view schematically showing a display device according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view that schematically shows a decorative sheet provided in the display device shown in FIG. [Figure 3] FIG. 3 is a cross-sectional view schematically showing a molded article according to the second embodiment. [Figure 4]FIG. 4 is a cross-sectional view that schematically shows the white pattern layer that the decorative sheet shown in FIG. 3 has. [Figure 5] FIG. 5 is a cross-sectional view that schematically shows a decorative sheet according to a third embodiment. [Figure 6] FIG. 6 is a cross-sectional view that schematically shows a decorative sheet according to a fourth embodiment. [Figure 7] FIG. 2 is a diagram illustrating an in-vehicle device. [Figure 8] FIG. [Figure 9] FIG. 2 is a cross-sectional development view of the in-vehicle device. [Figure 10] FIG. 2 is a diagram illustrating an in-vehicle device. [Figure 11] FIG. 2 is a diagram illustrating an in-vehicle device. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same elements in the drawings will be designated by the same reference numerals, and redundant 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 are merely examples of configurations that embody the technical concept of the present invention, and the technical concept of the present invention is not limited to the materials, shapes, structures, etc. of the components described below.

[0011] [First embodiment] <Display devices, molded products> FIG. 1 is a cross-sectional view schematically showing a display device according to a first embodiment. FIG. 2 is a cross-sectional view schematically showing a pattern-printed layer provided on the decorative sheet of the display device shown in FIG. 1. As shown in FIG. 1, the display device 1 comprises a molded article 7 and a light source 3. The molded article 7 comprises a decorative sheet 2 and a resin molded body 6. The decorative sheet 2 is a sheet for expressing a pattern and comprises a base layer 4, a pattern-printed layer 5, and a transmissive smoke-printed layer 30. The decorative sheet 2 is disposed on the surface of the resin molded body 6 and is provided in front of the light source 3 (between the viewer and the light source 3). The resin molded body 6 and the decorative sheet 2 are transmissive to visible light. 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 resin molded body 6 and the decorative sheet 2, and when the light source 3 is powered off, the viewer can see the pattern expressed by the decorative sheet 2. The light source 3 is, for example, a display device.

[0012] <Resin molded body> 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 molded products having complex shapes.

[0013] The resin molded product may further contain components other than resin, such as additives such as fillers, antistatic agents, ultraviolet absorbers, plasticizers, and lubricants.

[0014] <Decorative sheet> The base material layer 4 is a base material having visible light transparency. The base material layer 4 contains, for example, a resin having visible light transparency. Examples of the resin having visible light transparency include PET, PMMA, polyethylene, polypropylene, nylon, polycarbonate (PC), ABS, etc. The resin having visible light transparency may contain a thermoplastic resin having visible light transparency, from the viewpoint of facilitating the production of molded products having complex shapes.

[0015] The thickness of the base material layer 4 may be 25 μm or more, 50 μm or more, or 75 μm or more, from the viewpoint of providing sufficient strength to the decorative sheet 2. The thickness of the base material layer 4 may be 500 μm or less, 350 μm or less, or 250 μm or less, from the viewpoint of preventing the decorative sheet 2 from becoming excessively thick. The decorative sheet 2 may have a surface protection layer provided on the surface side of the base material layer 4 (the side opposite the picture-printed layer 5).

[0016] The pattern-printed layer 5 is a layer that expresses the pattern of the decorative sheet 2. The pattern-printed layer 5 includes a first color pattern layer 10 provided on one surface 4a of the base layer 4, and a second color pattern layer 20 provided on the first color pattern layer 10.

[0017] 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 may be, for example, 0.5 parts by mass or more and 20 parts by mass or less per 100 parts by mass of the first color binder 12.

[0018] 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 may be 1 to 10 μm. The first color pattern layer 10 may contain a curing agent from the viewpoint of improving the heat resistance of the first color pattern layer 10 and the adhesion of the first color pattern layer 10 to the base layer 4.

[0019] In the first embodiment, 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 thin flake. Light incident on the first color pattern layer 10 from the base layer 4 side is reflected by the surface of the metal oxide film, and light that passes through the metal oxide film and is reflected by the surface of the flake interferes with each other to generate interference light. Adjusting the film thickness and refractive index of the metal oxide film allows generation of interference light having a desired wavelength.

[0020] In the first embodiment, each of the first interference pigments 14a, 14b is titanium dioxide-coated mica. The particle size of the titanium dioxide-coated mica may be, for example, 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 first interference pigments 14a, 14b may be made of materials 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 materials other than titanium dioxide, such as zirconium oxide, zinc oxide, iron oxide, or tin oxide.

[0021] When incident light L enters the first color pattern layer 10, the first interference pigments 14a and 14b generate first interference lights 15a and 15b, which are different from each other. That is, the wavelengths of the first interference lights 15a and 15b are different from each other. As a result, the first interference pigments 14a and 14b exhibit a mixed color. The first interference pigments 14a and 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 and 15b exhibit red and gold, respectively. The blending amounts of the first interference pigments 14a and 14b may be the same or different from each other.

[0022] 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 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 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 may be, for example, 0.5 parts by mass or more and 20 parts by mass or less per 100 parts by mass of the second color binder 22.

[0023] 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 may be 1 to 10 μm. The second color pattern layer 20 may contain a curing agent from the viewpoint of improving 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.

[0024] In the first embodiment, the multiple second color pigment chips 23 are second interference pigments 24 that generate monochromatic interference light different from the mixed color of the first interference pigments 14a, 14b. The second interference pigment 24 is 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 substrate layer 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 with a desired wavelength.

[0025] In the first embodiment, the second interference pigment 24 is titanium dioxide-coated mica. The particle size of the titanium dioxide-coated mica may be, for example, 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.

[0026] When incident light L enters the second color pattern layer 20, the second interference pigment 24 generates a single color second interference light 25. As a result, the second interference pigment 24 exhibits a single color. The second interference pigment 24 may be any interference pigment that generates a single color second interference light 25 different from the mixed color exhibited by the first interference pigments 14a and 14b, and may be, for example, a green interference pigment (green pearl pigment). In this case, the second interference light 25 exhibits green color.

[0027] The transparent smoke printed layer 30 has the function of attenuating light from the front side of the viewpoint that passes through the decorative sheet 2. The transparent smoke printed layer 30 is provided on the outermost surface of the picture printed layer 5, opposite the base material layer 4. In the first embodiment, 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 may be 1 to 10 μm.

[0028] In the decorative sheet 2, 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 are additively mixed to produce a pattern.

[0029] The total light transmittance of the decorative sheet 2 is, for example, 30 to 70%. The total light transmittance refers to a value measured using a spectrophotometer (for example, spectrophotometer UV-2100 manufactured by Shimadzu Corporation).

[0030] In the decorative sheet 2 according to the first embodiment described above, the first color pattern layer 10 contains the first interference pigments 14a, 14b, and the second color pattern layer 20 contains the second interference pigment 24, making it possible to achieve a three-dimensional pattern even with a small number of printed layers. Furthermore, in the decorative sheet 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 molded product 7 including the decorative sheet 2 makes it possible to achieve a three-dimensional pattern even with a small number of printed layers of the decorative sheet, and by simplifying the color matching and registration work when printing the decorative sheet, it is possible to achieve excellent manufacturing efficiency.

[0031] In the first embodiment, the decorative sheet 2 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.

[0032] In the first 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, the transparency and color development of the picture-printed layer 5 can be improved. By containing titanium dioxide-coated mica having a particle size of 60 μm or less, a decrease in the resolution and gradation of the picture-printed layer 5 can be suppressed.

[0033] In the first embodiment, 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 film-forming 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 film-forming 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.

[0034] In the first embodiment, the total light transmittance of the decorative sheet 2 may be 30 to 70%. If the total light transmittance is 30% or more, when the decorative sheet 2 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 on the picture printed layer 5 can be prevented from appearing dark even if the screen is black.

[0035] In the first embodiment, an adhesive layer may be provided between the resin molded body 6 and the decorative sheet 2. This improves the adhesion between the resin molded body 6 and the decorative sheet 2.

[0036] In the first 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.

[0037] In the first 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.

[0038] In the first 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 article 7 is visible, and when the display is lit, transmitted light from the display (pattern display, video display, etc.) is visible.

[0039] <Method of manufacturing molded products> The molded article is formed 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 article and the decorative sheet is excellent. Specifically, the molded article may be a film insert molded article or an in-mold molded article.

[0040] 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.

[0041] 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.

[0042] 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 required to remove burrs from the decorative sheet is reduced when producing the molded article, resulting in excellent manufacturing efficiency. Specifically, the molded article may be a TOM (Three Dimension Overlay Method) molded article.

[0043] When the molded product is a TOM molded product, it 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.

[0044] [Second embodiment] A molded product 7A according to the second embodiment will be described below with reference to Figures 3 and 4. In the description of the second embodiment, descriptions that overlap with those of the first embodiment will be omitted, and only differences from the first embodiment will be described. In other words, the descriptions of the first embodiment may be used appropriately in the second embodiment to the extent technically possible.

[0045] Fig. 3 is a cross-sectional view schematically showing a molded article according to a second embodiment. Fig. 4 is a cross-sectional view schematically showing a white pattern layer provided on the decorative sheet shown in Fig. 3. The decorative sheet 2A includes a base layer 4 and a picture printed layer 5. The decorative sheet 2A further includes a white pattern layer 40 provided on the second color pattern layer 20.

[0046] 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, the term "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 may be, for example, 0.5 parts by mass or more and 20 parts by mass or less per 100 parts by mass of the silver binder 42.

[0047] 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 may be 1 to 10 μm. The white pattern layer 40 may contain a curing agent from the viewpoint of improving 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.

[0048] The configuration of the molded product 7A described above also achieves the same effects as those of the first embodiment. Furthermore, in the second embodiment, the decorative sheet 2A of the molded product 7A is provided on the second color pattern layer 20, and is provided with a white pattern layer 40 composed of a plurality of silver dots 41. 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. This allows the color development of the first color pattern layer 10 and the second color pattern layer 20 to be excellent, and the picture printed layer 5 to have a pattern that gives a whitish impression.

[0049] [Third embodiment] A molded product 7B according to the third embodiment will be described below with reference to Fig. 5. In the description of the third embodiment, descriptions that overlap with those of the first and second embodiments will be omitted, and only differences from the first and second embodiments will be described. In other words, to the extent technically possible, the descriptions of the first and second embodiments may be used appropriately in the third embodiment.

[0050] 5 is a cross-sectional view schematically showing a molded product according to the third embodiment. The decorative sheet 2B of the molded product 7B comprises a base layer 4 and a picture-printed layer 5. That is, the decorative sheet 2B does not comprise a permeable smoke-printed layer 30 or a white pattern layer 40. Even with the configuration of the decorative sheet 2B described above, the same effects as those of the first embodiment can be achieved.

[0051] [Fourth embodiment] A molded product 7C according to the fourth embodiment will be described below with reference to Fig. 6. In the description of the fourth embodiment, descriptions that overlap with those of the first, second, and third embodiments will be omitted, and only differences from the first, second, and third embodiments will be described. In other words, to the extent technically possible, the descriptions of the first, second, and third embodiments may be used appropriately in the fourth embodiment.

[0052] 6 is a cross-sectional view schematically showing a molded product according to the fourth embodiment. The decorative sheet 2C of the molded product 7C comprises a base layer 4, a picture print layer 5, a white pattern layer 40, and a permeable smoke print layer 30. The white pattern layer 40 is provided on the second color pattern layer 20, and the permeable smoke print layer 30 is provided on the white pattern layer 40. Even with the configuration of the decorative sheet 2C described above, the same effects as those of the first, second, and third embodiments can be achieved.

[0053] The display device and molded product according to the present invention are not limited to the above-described embodiments, and various other modifications are possible. For example, the second color pattern layer may include first interference pigments 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 exhibited by the multiple first interference pigments. Furthermore, 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.

[0054] [Fifth embodiment] The decorative sheet described above may be capable of being three-dimensionally formed by forming. Also, 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 invention 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, the decorative sheet includes a base layer and a picture print layer, the picture print layer is provided on one side of the base layer and has 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 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.

[0055] The formed product may appropriately use the descriptions of the first, second and third embodiments in the fourth embodiment to the extent technically possible.

[0056] 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.

[0057] An application example of the above-mentioned technology will be described with reference to Figs. 7 to 9. Fig. 7 is a front view showing an in-vehicle device 500 including the display device 1. An example of the in-vehicle device 500 is an in-vehicle console. Fig. 8 is an exploded perspective view of the in-vehicle device 500. Fig. 9 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. 7, 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.

[0058] As shown in FIGS. 8 and 9, the in-vehicle device 500 includes, in order from the front surface 500a, a decorative sheet 2, 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 decorative sheet 2 to the acrylic plate 504. The adhesive layer 508 is made 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. 8, 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 the acrylic plate 504 corresponding to the image transmission portion 501A. The housing 507B houses the light source 3 and the acrylic plate 504 corresponding to the image transmission portion 501B. The decorative sheet 2 is bonded to the surface of the housing 506 so as to conceal the light sources 3 of the housing portions 507A and 507B and the entire surface of the housing 506.

[0059] Additionally, the above-described technology may be applied to an in-vehicle device 510 shown in Fig. 10. The in-vehicle device 510 is provided on the back 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 decorative sheet 2 that covers the light source 3. The in-vehicle device 510 has an image transmission portion 512 on the back surface 510a, which is at eye height for a passenger in the rear seat. The image transmission portion 512 displays an image on the surface 510a when the display device is turned on, and displays a pattern on the surface 510a when the display device is turned off.

[0060] Additionally, the above-described technology may be applied to an in-vehicle device 520 shown in FIG. 11 . The in-vehicle device 520 is provided on a door handle 521 inside a vehicle. The in-vehicle device 520 houses a light source 3 serving as a display device inside, and has a decorative sheet 2 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 surface 520a when the display device is turned on, and displays a pattern on the 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 and conceals the display device. [Explanation of symbols]

[0061] 1...display device, 2, 2A, 2B, 2C...decorative sheet, 3...light source, 4...base material layer, 5...picture printed layer, 6...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, 30...transparent smoke printed layer, 40...white pattern layer, 41...silver dot, 42...silver binder, 43...silver pigment chip.

Claims

1. 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 are visible light transmissive, The decorative sheet comprises a substrate layer and a pattern printed layer, the picture printed layer is provided on one surface of the base material layer, and a first color pattern layer is formed by a plurality of first color dots; a second color pattern layer provided on the first color pattern layer and configured by 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 within the first color binder; each of the plurality of second color dots includes 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 is a first interference pigment of a plurality of colors that respectively generate first interference light beams 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 single color different from the mixed color exhibited by the plurality of first interference pigments; Additively mixing the plurality of first interference lights and the second interference light, The decorative sheet further comprises a transparent smoke printed layer provided on the outermost surface of the picture printed layer on the side opposite the base layer.

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 has visible light transparency, The decorative sheet comprises a substrate layer and a pattern printed layer, the picture printed layer is provided on one surface of the base material layer, and a first color pattern layer is formed by a plurality of first color dots; a second color pattern layer provided on the first color pattern layer and configured by 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 within the first color binder; each of the plurality of second color dots includes 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 is a first interference pigment of a plurality of colors that respectively generate first interference light beams 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 single color different from the mixed color exhibited by the plurality of first interference pigments; Additively mixing the plurality of first interference lights and the second interference light, The decorative sheet further comprises a transparent smoke printed layer provided on the outermost surface of the picture printed layer on the side opposite the base layer.

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

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

7. a content of the plurality of first color pigment chips is 0.5 parts by mass or more and 20 parts by mass or less with respect to 100 parts by mass of the first color binder; The molded product according to any one of claims 1 to 4, wherein 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 per 100 parts by mass of the second color binder.

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

9. The display device of claim 8 , wherein the light source is a display device.

Images