Make-up sheet, display device housing, and display device

Abstract

To provide a make-up sheet which can realize a display device capable of suppressing visibility degradation of an image.SOLUTION: The make-up sheet has a laminate structure including: a print layer; and a shield layer with a coloring agent and a resin film containing resin. The make-up sheet has a plurality of recessed parts provided in the shield layer. The transmittance of the shield layer to light with a wavelength of 550 nm is in the range of 10-70%.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a decorative sheet, a housing for a display device, and a display device. [Background technology]

[0002] Conventionally, as a decorative sheet for a wall surface or the like, a laminate sheet is known that includes a substrate and a printed layer provided on the substrate, the printed layer having a pattern such as a wood grain pattern or an abstract pattern. On the wall surface on which the laminate sheet is provided, the pattern is always visible. Meanwhile, a laminate sheet is also known that has a light source provided on the back side of the laminate sheet and can display a pattern different from the pattern of the printed layer by turning on the light source.

[0003] For example, Patent Document 1 discloses a display device having a display that is fitted into an attachment portion and emits display light to the outside when lit, characterized in that the front of the display is covered with a screen having a large number of fine holes that can transmit the display light, and the surface of the screen is set to the same color and pattern as the attachment portion around the display. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2001-331132 A Summary of the Invention [Problem to be solved by the invention]

[0005] The display device of Patent Document 1 has micropores on the surface of the screen on the viewer's side. Foreign matter from the external environment enters the micropores, reducing the light transmittance of the screen. This reduces the visibility of images on the display device of Patent Document 1.

[0006] The present disclosure provides a display device capable of suppressing a decrease in image visibility, and also provides a decorative sheet and a housing for a display device that can realize such a display device. [Means for solving the problem]

[0007] In order to solve the above problems, the present disclosure provides the following decorative sheet, a housing for a display device, and a display device. [1] A printing layer; a concealing layer made of a resin film containing a colorant and a resin; A decorative sheet having a laminated structure comprising: The decorative sheet has a plurality of recesses, The recess is provided in the concealing layer, The decorative sheet, wherein the concealing layer has a transmittance of 10 to 70% for light with a wavelength of 550 nm. [2] A printing layer; A base layer; a concealing layer made of a resin film containing a colorant and a resin; A decorative sheet having a laminated structure comprising, in this order, The decorative sheet has a plurality of recesses, the recess is formed by an inner wall of a through hole provided in the concealing layer and a surface of the base material layer, The decorative sheet, wherein the concealing layer has a transmittance of 10 to 70% for light with a wavelength of 550 nm. [3] The decorative sheet according to [1], wherein the thickness of the concealing layer in the recess is 20 μm or less. [4] The decorative sheet according to any one of [1] to [3], wherein the thickness of the concealing layer in the areas other than the recesses is 50 to 150 μm. [5] The decorative sheet according to any one of [1] to [4], wherein the inclination of the recessed portion is 10 degrees or less. [6] A decorative sheet according to any one of [1] to [5], A support for supporting the decorative sheet; A display device housing comprising: [7] A decorative sheet according to any one of [1] to [5], A display device; Equipped with A display device, wherein the concealing layer is disposed between the printed layer of the decorative sheet and the display device. Effect of the Invention

[0008] According to the present disclosure, there is provided a display device capable of suppressing a decrease in visibility of an image. Furthermore, according to the present disclosure, there is provided a decorative sheet and a housing for a display device capable of realizing such a display device. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a cross-sectional view that shows a schematic state in which a display device is installed on a wall surface. [Diagram 2] FIG. 2 is a cross-sectional view that illustrates a schematic diagram of one embodiment of the configuration of the decorative sheet shown in FIG. [Diagram 3] Figures 3(a) and 3(b) are front views showing an example of the surface state of the display device shown in Figure 1, where Figure 3(a) shows the state when the screen located on the back side of the decorative sheet is black, and Figure 3(b) shows the state when an image is displayed on the screen. [Figure 4] FIG. 4 is a cross-sectional view that illustrates a schematic diagram of another embodiment of the decorative sheet. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the drawings are schematic, and for example, the relationship between thickness and planar dimensions, and the ratio of thicknesses of each layer are different from the actual ones. In addition, the embodiments shown below are examples of 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.

[0011] FIG. 1 is a cross-sectional view showing a display device 100 according to the present embodiment installed on a wall surface W. The display device 100 includes a decorative sheet 20A and a display device 30. The display device 30 is fixed to, for example, a wall surface W. The display device 30 includes a light source 35 therein, for example, a liquid crystal monitor, an organic EL monitor, or an LED monitor. The display device 100 also includes a support 40 that supports the decorative sheet 20A. That is, the display device 100 can be said to include a display device housing 50 including the decorative sheet 20A and the support 40 that supports the decorative sheet 20A, and the display device 30. The support 40 is made of a material (for example, iron) that can ensure strength, and is fixed to the wall surface W by a jig (not shown). The support 40 has an opening (window) 42. The display device 30 is disposed in the opening 42. The surface 30S of the display device 30 and the surface 40S of the support 40 may be substantially on the same plane.

[0012] Fig. 2 is a cross-sectional view showing a schematic configuration of the decorative sheet 20A shown in Fig. 1. As shown in Fig. 2, the decorative sheet 20A has a laminated structure including a printed layer 1 and a concealing layer 3 made of a resin film containing a colorant and a resin. The decorative sheet 20A is arranged so that the concealing layer 3 is located on the side where the display device 30 is present. The decorative sheet 20A has a plurality of recesses H. In this embodiment, the recesses H are provided in the concealing layer 3. The recesses H are open on the surface of the concealing layer 3 opposite to the printed layer 1.

[0013] The decorative sheet 20A has sufficient concealment properties to prevent the image of the printed layer 1 from appearing dark when no image is displayed on the screen 32. On the other hand, when an image is displayed on the screen 32, display light is transmitted through the multiple recesses H. This allows the image to be viewed through the decorative sheet 20A. Note that by making the brightness of the surface F2 side illuminated by the image stronger than the brightness of the space in which the decorative sheet 20A is installed (brightness of the surface F1 side), the image displayed by the display device 30 can be displayed more clearly.

[0014] If the decorative sheet has a recess on the side opposite to the side where the display device 30 is present, foreign matter from the external environment may get into the recess. On the other hand, the decorative sheet 20A has a recess on the side where the display device 30 is present, so the intrusion of such foreign matter is suppressed. As a result, the decorative sheet 20A can suppress a decrease in the visibility of images.

[0015] The decorative sheet 20A can use resin films of the same material in the area where the display device 30 is placed and in the area where it is not placed, which tends to suppress differences in color tone between these areas.

[0016] Fig. 3(a) is a front view showing an example of the state of the surface of the display device 100, showing a state in which no image is displayed on the screen 32. The surface of the display device 100 has, for example, a wood grain pattern based on a dark brown color, and blends in with the surrounding wall surfaces, making it appear as if the display device 30 does not exist. On the other hand, Fig. 3(b) is a front view showing an example of the state of the surface of the display device 100, showing a state in which an image on the screen 32 is projected onto the surface (surface F1) of the display device 100. For example, as shown in Fig. 3, information such as the date, time, and weather forecast is displayed on the surface of the display device 100.

[0017] Each layer of the decorative sheet 20A will be described below.

[0018] (Printing layer) The printed layer 1 is a layer provided for the purpose of imparting design to the decorative sheet 20A. The printed layer 1 can be formed by, for example, an inkjet method, a gravure printing method, a screen printing method, or an offset printing method. The decorative sheet 20A does not include a transparent substrate that is generally used to form a printed layer, since the printed layer 1 is provided directly on the surface of the concealing layer 3.

[0019] The pattern of the printed layer 1 can be determined according to the environment of the installation location of the display device. Examples of the pattern of the printed layer 1 include wood grain patterns, stone grain patterns, and abstract patterns.

[0020] The thickness of the printed layer 1 may be 0.5 μm or more, 1 μm or more, or 2 μm or more from the viewpoint of preventing the image of the printed layer 1 from appearing dark when no image is displayed on the screen 32. The thickness of the printed layer 1 may be 30 μm or less, 20 μm or less, or 15 μm or less from the viewpoint of improving the visibility of the image when an image is displayed on the screen 32.

[0021] (Hidden layer) The concealing layer 3 is a layer that prevents the inner configuration of the decorative sheet 20A from being seen through. The concealing layer 3 is made of a resin film that contains a colorant and a resin.

[0022] Examples of the colorant include pigments, such as titanium oxide.

[0023] Examples of the resin include vinyl chloride, polypropylene-based resin, polyethylene-based resin, and polybutylene terephthalate.

[0024] The transmittance of the masking layer for light with a wavelength of 550 nm is 10 to 70%. The transmittance of the masking layer was measured using a cut-out test piece (area: 10 cm 2 ) means the transmittance relative to

[0025] Examples of the shape of the recess include a cylindrical shape, a polygonal prism shape (e.g., a triangular prism shape, a square prism shape, a hexagonal prism shape, etc.), a cone shape, a polygonal pyramid shape, a dome shape (hemisphere), and a step shape. The shape of the recess may be a single shape or a combination of multiple shapes. When the recess is a square prism shape, the cross-sectional shape in the direction along the main surface of the concealing layer may be a rectangle or a square. When the pattern of the printing layer is a wood grain pattern, the cross-sectional shape is preferably a rectangle with the wood grain direction being the longitudinal direction.

[0026] At least one recess is disposed per pixel of a display device to be used. The number of recesses may be small when the area of ​​the bottom H1 of the recess is large, and may be large when the area of ​​the bottom H1 of the recess is small.

[0027] The recesses are preferably arranged regularly because this tends to suppress variation in the amount of transmitted light. Regularly arranging the recesses means, for example, that the recesses are arranged at equal intervals in at least one of the horizontal and vertical directions.

[0028] From the viewpoint of ensuring the concealing property, the gradient α of the recess is preferably 10 degrees or less. The gradient α is the degree of inclination of the side surface H2 of the recess with respect to the thickness direction of the concealing layer 3, as shown in FIG.

[0029] The thickness of the concealing layer 3 in the recessed portion is preferably 20 μm or less, more preferably 15 μm or less, and even more preferably 10 μm or less, in order to provide better visibility.

[0030] The thickness of the concealing layer in the portion other than the recessed portion is preferably 50 to 150 μm, from the viewpoint of further improving visibility while ensuring concealment properties.

[0031] The concealing layer 3 is obtained by extruding a mixture of a colorant and a resin into a film and forming recesses in the film. The recesses are formed, for example, by embossing. Embossing refers to a processing technique in which an embossing roll with an uneven surface is pressed against a film to form recesses and protrusions on the surface of the film corresponding to the recesses and protrusions of the embossing roll.

[0032] Although the embodiment of the present disclosure has been described in detail above, the present disclosure is not limited to the above embodiment. In the above embodiment, a decorative sheet having only a printed layer and a concealing layer is exemplified, but as shown in FIG. 4, the decorative sheet may have a base layer between the printed layer and the concealing layer.

[0033] 4 has a laminated structure including, in this order, a printed layer 1, a first base layer 5, and a concealing layer 3. The decorative sheet 20B is disposed so that the concealing layer 3 is located on the side where the display device 30 is present. Below, differences between the decorative sheet 20B and the decorative sheet 20A will be described.

[0034] (First Base Layer) The first substrate layer 5 is a layer used as a substrate for forming the printed layer 1. The first substrate layer 5 has excellent visible light transmittance, and is formed, for example, from a transparent resin. The first substrate layer 5 may be made of a material that can withstand heat generated from the display device 30. From the viewpoint of having excellent transparency and excellent heat resistance, the first substrate layer 5 may be formed of PET, acrylic, polycarbonate, nylon, polyethylene, polypropylene, or the like.

[0035] The material of the first base layer 5 can be the same as the base material of the decorative sheet to be placed on the surrounding wall surfaces, from the viewpoint of improving harmony with the surrounding wall surfaces.

[0036] The thickness of the first base layer 5 may be 25 μm or more, 50 μm or more, or 75 μm or more, so that the decorative sheet 20B has sufficient strength. The thickness of the first base layer 5 may be 500 μm or less, 350 μm or less, or 250 μm or less, so that the decorative sheet 20B does not become excessively thick.

[0037] The decorative sheet 20B has a plurality of recesses. The recesses H are defined by the inner walls of the through holes provided in the concealing layer and the surface of the first base material layer 5.

[0038] The decorative sheets 20A, 20B may have a second base material layer on the main surface of the printed layer 1 opposite the concealing layer 3.

[0039] (Second Base Layer) The second base layer is a layer disposed to protect the printed layer 1. The second base layer has excellent visible light transmittance, and is formed, for example, from a transparent resin. The second base layer may be made of a material that can withstand heat generated from the display device 30. From the viewpoint of having excellent transparency and excellent heat resistance, the second base layer may be formed of PET, acrylic, polycarbonate, nylon, polyethylene, polypropylene, or the like.

[0040] The thickness of the second base material layer may be 25 μm or more, 50 μm or more, or 75 μm or more from the viewpoint of adequately protecting the printed layer 1. The thickness of the second base material layer may be 500 μm or less, 350 μm or less, or 250 μm or less from the viewpoint of preventing the decorative sheets 20A and 20B from becoming excessively thick.

[0041] In addition, the decorative sheet 20B has through holes in the concealing layer, but the through holes do not necessarily have to penetrate the concealing layer. In that case, the concealing layer may be disposed so that the openings of the recesses face the first base layer side. EXAMPLES

[0042] Examples of the present disclosure will be described below. Note that the present disclosure is not limited to the following examples.

[0043] Example 1 A mixture containing a pigment and a resin was extruded and formed into a film, and an embossing roll was pressed against the film to obtain a resin film having recesses.

[0044] A pattern was printed on the surface of the concealing layer on the side on which no recesses were formed, to obtain a decorative sheet.

[0045] Example 2 A substrate having a pattern printed on one surface was prepared. A mixture containing a pigment and a resin was extruded and formed into a film on the surface of the substrate on which the pattern was not printed, and an embossing roll was pressed against the film. This resulted in a decorative sheet having a print layer, a substrate layer, and a concealing layer in this order. The decorative sheet had a recess, and the recess was composed of the inner wall of the through hole formed in the concealing layer and the surface of the substrate layer exposed from the through hole.

[0046] [Transmittance measurement] A test piece (area 10 cm ) was taken from the resin film used as the concealing layer in each example. 2 ) was cut out. The transmittance of the test piece for light with a wavelength of 550 nm was measured. The transmittance of the concealing layers in Examples 1 and 2 was in the range of 10 to 70%. [Visibility rating] A display device (liquid crystal monitor) was placed inside the decorative sheet of each example, with the printed layer of the decorative sheet facing outward. The distance between the decorative sheet and the display device was 3 mm. The visibility of the display device when it was turned on was evaluated. When the decorative sheets of Examples 1 and 2 were used, it was visually confirmed that the images and characters displayed on the liquid crystal monitor looked bright. [Explanation of symbols]

[0047] 1...printed layer, 3...concealing layer, H...recess, 5...base material layer, 20A, 20B...decorative sheet, 30...display device, 40...support, 50...casing for display device, 100...display device, α...taper angle.

Claims

1. A printing layer; a concealing layer made of a resin film containing a colorant and a resin; A decorative sheet having a laminated structure comprising: The decorative sheet has a plurality of recesses, The recess is provided in the concealing layer, The decorative sheet, wherein the transmittance of the concealing layer to light with a wavelength of 550 nm is 10 to 70%.

2. A printing layer; A base layer; a concealing layer made of a resin film containing a colorant and a resin; A decorative sheet having a laminated structure comprising, in this order, The decorative sheet has a plurality of recesses, The recess is formed by an inner wall of a through hole provided in the concealing layer and a surface of the base material layer, The decorative sheet, wherein the transmittance of the concealing layer to light with a wavelength of 550 nm is 10 to 70%.

3. 2. The decorative sheet according to claim 1, wherein the thickness of said concealing layer in said recesses is 20 μm or less.

4. 3. The decorative sheet according to claim 1, wherein the thickness of the concealing layer in the portion other than the recessed portion is 50 to 150 μm.

5. 3. The decorative sheet according to claim 1, wherein the inclination of said recesses is 10 degrees or less.

6. The decorative sheet according to claim 1 or 2, A support for supporting the decorative sheet; A display device housing comprising:

7. The decorative sheet according to claim 1 or 2, A display device; Equipped with A display device, wherein the concealing layer is disposed between the printed layer of the decorative sheet and the display device.

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