Decorative sheet, display device with decorative sheet, and winding of sheet-like member

Abstract

To provide a decorative sheet with a striped pattern effectively made inconspicuous.SOLUTION: A decorative sheet 20 includes: a pattern part 24 having a design layer 31 containing a plurality of dots; and a plurality of permeation parts 26 which are parts without the pattern part 24. The permeation part extends linearly in a direction LDT tilted to end sides 20a-20d of the decorative sheet.SELECTED DRAWING: Figure 12

Description

Technical Field

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[0001] The present invention relates to a decorative sheet, a display device with a decorative sheet, and a winder for a sheet-like member.

Background Art

[0002] For example, as disclosed in Patent Document 1, a decorative sheet (screen) used by being overlaid on a display device is known. This decorative sheet has a pattern portion and a transmission portion formed by an opening provided in the pattern portion. The transmission portion allows image light from a display device disposed on the back surface of the decorative sheet to pass therethrough. The pattern portion displays a design when the display of the display device is stopped. According to this decorative sheet, while enabling a desired display by the display device, it is possible to conceal the display device and display a design when the display is not being performed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when various designs were tried on such a decorative sheet, stripe patterns were sometimes observed depending on the design displayed on the pattern portion. As a result of intensive studies on such appearance defects, it was confirmed that moiré caused by the interference between the regularity of the arrangement of the transmission portions and the regularity of the arrangement of the halftone dots in the pattern portion forming the design was the cause of the stripe pattern, and furthermore, that the stripe pattern could be effectively made less conspicuous depending on the configuration of the transmission portion. That is, an object of the present invention is to effectively make the stripe pattern of the decorative sheet less conspicuous.

Means for Solving the Problems

[0006] In the first decorative sheet according to the present invention, the transparent portion may extend linearly in a direction that forms an angle of 10° to 80° with respect to the edge.

[0007] The second decorative sheet according to the present invention is A design portion having a design layer containing multiple halftone dots, A decorative sheet comprising a plurality of transparent portions which are non-formed portions of the pattern portion, The transparent portion extends linearly in a direction inclined with respect to the arrangement direction of the halftone dots of the same color included in the plurality of halftone dots.

[0008] In the second decorative sheet according to the present invention, the transparent portion may extend linearly in a direction that forms an angle of 10° to 80° with respect to the arrangement direction of the halftone dots of the same color included in the plurality of halftone dots.

[0009] In the first and second decorative sheets according to the present invention, the difference between the arrangement pitch of the plurality of transparent portions and the arrangement pitch of halftone dots of the same color included in the plurality of halftone dots may be 5 μm or more.

[0010] In the first and second decorative sheets according to the present invention, Each permeable portion has a first longitudinal edge and a second longitudinal edge that face each other and extend in the longitudinal direction of the permeable portion. The first longitudinal edge and the second longitudinal edge may include non-linear portions.

[0011] In the first and second decorative sheets according to the present invention, the width of each transparent portion may vary along its longitudinal direction.

[0012] In the first and second decorative sheets according to the present invention, Each permeable portion has a first longitudinal edge and a second longitudinal edge that face each other and extend in the longitudinal direction of the permeable portion. The first longitudinal edge and the second longitudinal edge may extend in the longitudinal direction in a meandering manner.

[0013] In the first and second decorative sheets according to the present invention, The first longitudinal edge includes a plurality of outward projections projecting away from the second longitudinal edge in a direction perpendicular to the longitudinal direction, and a plurality of inward projections projecting closer to the second longitudinal edge in a direction perpendicular to the longitudinal direction. The distance between two adjacent outward protrusions of the first longitudinal edge along the longitudinal direction is smaller than the arrangement pitch of dots of the same color included in the plurality of dots, and the second longitudinal edge includes a plurality of outward protrusions projecting away from the first longitudinal edge in a direction perpendicular to the longitudinal direction, and a plurality of inward protrusions projecting closer to the first longitudinal edge in a direction perpendicular to the longitudinal direction, The distance between two adjacent outward protrusions of the second longitudinal edge in the longitudinal direction may be smaller than the arrangement pitch of halftone dots of the same color included in the plurality of halftone dots.

[0014] The first and second decorative sheets according to the present invention are The system further comprises a transparent substrate portion positioned facing the pattern portion and the transparent portion and supporting at least the pattern portion, At least one end of the permeable portion may extend to the edge of the base material portion.

[0015] The decorative sheet-equipped display device according to the present invention comprises either the first or second decorative sheet according to the present invention described above.

[0016] The decorative sheet-equipped display device according to the present invention may further include a display device on which the decorative sheet is superimposed.

[0017] In the display device with a decorative sheet according to the present invention, the transparent portion may linearly extend in a direction non-parallel to the arrangement direction of pixels of the same color included in the display device.

[0018] In the display device with a decorative sheet according to the present invention, the transparent portion may linearly extend in a direction forming an angle of 10° or more and 80° or less with respect to the arrangement direction of the pixels of the same color.

[0019] In the display device with a decorative sheet according to the present invention, the magnitude of the difference between the arrangement pitch of the plurality of transparent portions and the arrangement pitch of pixels of the same color included in the display device may be 5 μm or more.

[0020] In the display device with a decorative sheet according to the present invention, Each transparent portion has a first longitudinal edge and a second longitudinal edge that face each other and extend in the longitudinal direction of the transparent portion, The first longitudinal edge includes a plurality of outer convex portions protruding to the side away from the second longitudinal edge in the direction orthogonal to the longitudinal direction, and a plurality of inner convex portions protruding to the side close to the second longitudinal edge in the direction orthogonal to the longitudinal direction, The separation length along the longitudinal direction between two adjacent inner convex portions of the first longitudinal edge in the longitudinal direction is smaller than the arrangement pitch of pixels of the same color, The second longitudinal edge includes a plurality of outer convex portions protruding to the side away from the first longitudinal edge in the direction orthogonal to the longitudinal direction, and a plurality of inner convex portions protruding to the side close to the first longitudinal edge in the direction orthogonal to the longitudinal direction, The separation length along the longitudinal direction between two adjacent inner convex portions of the second longitudinal edge in the longitudinal direction may be smaller than the arrangement pitch of pixels of the same color.

[0021] The winding body according to the present invention, includes a sheet-like member having a pattern portion with a design layer including a plurality of halftone dots and a plurality of transparent portions that are non-formation portions of the pattern portion. The sheet-like member is wound around a winding axis, The permeable portion extends linearly in a direction non-parallel to the longitudinal direction of the sheet-like member.

[0022] In the winding body according to the present invention, the permeable portion may extend linearly in a direction that forms an angle of 10° to 80° with respect to the longitudinal direction. [Effects of the Invention]

[0023] According to the present invention, striped patterns that may be observed on a decorative sheet can be effectively made less noticeable. [Brief explanation of the drawing]

[0024] [Figure 1] Figure 1 is a diagram illustrating one embodiment, and is a schematic exploded perspective view showing an example of a display device with a decorative sheet. [Figure 2] Figure 2 is a cross-sectional view of the display device with decorative sheet shown in Figure 1. [Figure 3] Figure 3 is a plan view showing the display device with the decorative sheet shown in Figure 1, and it shows the display device in the display state. [Figure 4] Figure 4 is a plan view showing the light-shielding sheet included in the decorative sheet-equipped display device shown in Figure 1. [Figure 5] Figure 5 is a partial plan view showing an example of a decorative sheet included in the display device with a decorative sheet shown in Figure 1. [Figure 6] Figure 6 is a partial plan view showing the patterned portion of the decorative sheet shown in Figure 5. [Figure 7A] Figure 7A is a plan view illustrating the arrangement of the first halftone dots in the pattern area of ​​Figure 6. [Figure 7B] Figure 7B is a plan view illustrating the arrangement of the second halftone dots in the image area of ​​Figure 6. [Figure 7C] Figure 7C is a plan view illustrating the arrangement of the third halftone dots in the image area of ​​Figure 6. [Figure 8]Figure 8 is a diagram corresponding to Figure 2, and shows another example of a display device with a decorative sheet. [Figure 9] Figure 9 is a diagram illustrating an example of a method for manufacturing the decorative sheet included in the display device with decorative sheet shown in Figure 1. [Figure 10] Figure 10 is a diagram illustrating an example of a method for manufacturing the decorative sheet included in the display device with decorative sheet shown in Figure 1. [Figure 11] Figure 11 is a perspective view showing the winding body used for the decorative sheet included in the decorative sheet display device shown in Figure 1, along with the decorative sheet cut from the winding body. [Figure 12] Figure 12 is a partially enlarged plan view showing the decorative sheet from Figure 5, with the first and third halftone dots omitted. [Figure 13] Figure 13 is a partially enlarged plan view showing an example of a transparent area included in the decorative sheet of Figure 5. [Figure 14] Figure 14 is a perspective view corresponding to Figure 1, showing yet another example of a display device with a decorative sheet. [Figure 15] Figure 15 is a diagram corresponding to Figure 2, and is a cross-sectional view of the decorative sheet display device shown in Figure 14. [Figure 16] Figure 16 is a plan view showing the pixel arrangement of the display device included in the decorative sheet display device shown in Figure 14. [Modes for carrying out the invention]

[0025] Hereinafter, an embodiment of the present invention will be described with reference to the drawings, with reference to the illustrated specific examples. Note that, for the sake of illustration and ease of understanding, the scale and aspect ratios of the drawings attached to this specification have been appropriately altered and exaggerated from those of the actual objects.

[0026] In this specification, the terms "layer," "sheet," and "film" are not distinguished from each other solely based on differences in name. For example, the term "layer" is a concept that includes components that could be called sheets or films.

[0027] Furthermore, terms used in this specification to specify shapes, geometric conditions, and their degrees, such as "parallel," "perpendicular," and "identical," as well as values ​​for length and angle, shall not be strictly interpreted, but shall be interpreted to include a range that allows for the expectation of similar functionality.

[0028] Figure 1 is a schematic exploded perspective view showing a display device 1 with a decorative sheet according to one embodiment of the present invention. As shown in Figure 1, the display device 1 with a decorative sheet includes a display device 10 having a display surface 11 and a decorative sheet 20 positioned facing the display surface 11. In the illustrated example, the display device 1 with a decorative sheet is shown as a flat plate, but the display device 1 with a decorative sheet may have a curved shape by curving each component of the display device 1. For example, only the decorative sheet 20 may be curved, or at least the display surface 11 of the display device 10 and the decorative sheet 20 may be curved.

[0029] This decorative sheet-equipped display device 1 can take on a non-display state as shown in Figure 1 and a display state as shown in Figure 3. In the non-display state shown in Figure 1, the design formed on the pattern portion 24 of the decorative sheet 20 can be displayed. In the display state shown in Figure 3, the image formed by the display device 10 can be displayed. Furthermore, the decorative sheet-equipped display device 1 and decorative sheet 20 according to this embodiment are designed to enable the display of excellent designs expressed using halftone patterns.

[0030] First, the configuration of the decorative sheet-equipped display device 1 will be explained with reference to the illustrated example.

[0031] Various devices for displaying images can be used as the display device 10. Typically, the display device 10 can be a device that displays an image by emitting image light from a display surface 11.

[0032] In the example shown in Figure 2, the display device 10 includes a surface light source device 12 and a light-shielding sheet 14. The surface light source device 12 is a device that emits light in a planar manner. The surface light source device 12 has a light-emitting surface 13. The surface light source device 12 is not particularly limited, and various types can be used, such as edge-lit or direct-lit devices.

[0033] The light-shielding sheet 14 is placed on the light-emitting surface 13 of the surface light source device 12. The light-shielding sheet 14 forms the display surface 11 of the display device 10. As shown in Figure 4, a plan view of the light-shielding sheet 14, the light-shielding sheet 14 is planarly divided into an aperture region 14a with the same pattern as the pattern of the image to be displayed, and a light-shielding region 14b adjacent to the aperture region 14a. The light-shielding region 14b has visible light absorption properties and shields the light emitted by the surface light source device 12. The light-shielding region 14b can be made using a resin material containing black pigment or the like. More specifically, it can be made using the same material as the light-shielding layer 32 of the pattern portion 24, which will be described later. The aperture region 14a is a transparent or open region that transmits the light emitted by the surface light source device 12. That is, the light-shielding sheet 14 functions as a light-shielding mask that transmits light in a desired pattern. In the example of the light-shielding sheet 14 shown in Figure 4, the aperture region 14a has the shape of the letter "D".

[0034] In this specification, "transparent" means that the visible light transmittance, as determined by the average value of the transmittance at each wavelength when measured using a spectrophotometer (Shimadzu Corporation "UV-3100PC", compliant with JIS K 0115) within the measurement wavelength range of 380 nm to 780 nm, is 50% or more, and preferably 80% or more.

[0035] The illustrated display device 10, having the above configuration, can display the letter "D" as a still image when the surface light source device 12 emits light. Furthermore, by changing the light-shielding sheet 14, that is, by using a different light-shielding sheet 14, various images can be displayed inside the outer contour of the light-emitting surface 13. From this point of view, the display surface 11 of the illustrated display device 10 can be said to be the area facing the light-emitting surface 13.

[0036] However, the display device 10 is not limited to the example shown in Figure 2. For example, the light-emitting surface 13 of the surface light source device 12 may have the same pattern as the pattern of the displayed image, thereby omitting the light-shielding sheet 14. Alternatively, the light-shielding sheet 14 may be spaced apart from the surface light source device 12 and laminated with the decorative sheet 20. In this example, the light-shielding sheet 14 may be bonded to the decorative sheet 20 via a bonding layer such as an adhesive layer or a bonding layer, and integrated with the decorative sheet 20. Furthermore, the display device 10 may be, for example, a device that displays moving images. Specifically, as will be discussed later, a dot matrix display device can be used. In a dot matrix display device, a desired image can be formed by individually controlling the light-emitting state of the pixels that form the dots.

[0037] Next, the decorative sheet 20 will be described. The decorative sheet 20 is positioned facing the display surface 11 of the display device 10 and covers at least the entire display surface 11 so that the display surface 11 is not directly observed from the outside. The decorative sheet 20 has dimensions greater than or equal to the dimensions of the display surface 11 so that it can cover the entire display surface 11 of the display device 10. The illustrated decorative sheet 20 has dimensions that cover the entire front area of ​​the display device 10, including the display surface 11 and the surrounding area 11a located around the display surface 11. In other words, the decorative sheet 20 conceals the entire display device 10. In the example shown in Figure 1, the decorative sheet 20 as a whole is a flat plate-shaped member that extends in the same direction as the display surface 11 of the display device 10. The thickness of the decorative sheet 20 can be, for example, 20 μm or more and 550 μm or less.

[0038] In the illustrated example, the decorative sheet 20 has a rectangular shape in plan view. The decorative sheet 20 includes a first end side 20a and a second end side 20b that extend parallel to each other as long sides, and a third end side 20c and a fourth end side 20d that extend parallel to each other as short sides. As shown in Figure 1, the first end side 20a and the second end side 20b extend linearly in the first reference direction DS1, and the third end side 20c and the fourth end side 20d extend linearly in the second reference direction DS2 which is perpendicular to the first reference direction DS1.

[0039] Furthermore, in order to clarify the directional relationships between drawings, some drawings show the first reference direction DS1 and the second reference direction DS2, as well as the normal direction ND which is perpendicular to both the first reference direction DS1 and the second reference direction DS2, as directions common to all drawings.In addition, Figure 4 shows the directions of the decorative sheet 20 laminated with the light-shielding sheet 14 in the decorative sheet display device 1, in order to clarify the relative position of the light-shielding sheet 14 with respect to the decorative sheet 20 when the light-shielding sheet 14 is incorporated into the decorative sheet display device 1.

[0040] The decorative sheet 20 displays a design, thereby adding aesthetic appeal to the display device 1 with the decorative sheet. In this embodiment, the decorative sheet 20 has a patterned portion 24 on which a pattern is formed, as shown in Figures 2 and 5, and a transparent portion 26 provided as an opening in the patterned portion 24. The transparent portion 26 transmits image light from the display device 10. The patterned portion 24 includes a design layer 31 that displays a design using a plurality of halftone dots. In the illustrated example, the patterned portion 24 further includes a light-shielding layer 32 in addition to the design layer 31. The illustrated decorative sheet 20 also has a base material portion 22 at a position facing the patterned portion 24 and the transparent portion 26 in the normal direction ND. The individual components of the decorative sheet 20 will be described below.

[0041] First, the base material 22 that supports the pattern portion 24 will be described. The base material 22 is a transparent film-like member. In the example shown in Figure 2, the base material 22 is located on the side of the decorative sheet-equipped display device 1 that is closest to the display device 10. A resin film can be used as the base material 22. The base material 22 can be any material that transmits visible light and can properly support the pattern portion 24, but examples include polymethyl methacrylate, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polystyrene, cyclic polyolefin, ABS (acrylonitrile butadiene styrene copolymer), etc. Considering the transmittance of visible light and the proper support of the pattern portion 24 and the transparent portion 26, the base material 22 preferably has a thickness of 10 μm to 500 μm.

[0042] Next, the pattern portion 24 and the transparent portion 26 will be described in order. As shown in Figure 2, the pattern portion 24 has a light-shielding layer 32 and a design layer 31 that are sequentially laminated on the base material portion 22 in the direction normal to the decorative sheet 20 ND. Of these, the light-shielding layer 32 is close to the display device 10 along the direction normal to the decorative sheet 20 ND, and the design layer 31 is spaced away from the display device 10 along the direction normal to the ND. In the illustrated example, the design layer 31 forms the layer closest to the observer in the pattern portion 24.

[0043] The design layer 31 forms the design displayed by the decorative sheet 20. The design layer 31 can form designs such as figures, patterns, designs, colors, pictures, photographs, characters, marks, pictograms, letters, and numbers. The design layer 31 can also display a design for the background. For example, the design layer 31 may display wood grain or marble patterns or geometric patterns as designs that can be harmonized with the surrounding environment in which the decorative sheet-equipped display device 1 is installed.

[0044] In this embodiment, the design layer 31 contains a large number of halftone dots 41, 42, and 43, and displays a design using these halftone dots. This design layer 31 can display a design (image) by regularly arranging halftone dots 41, 42, and 43 of the same color and by changing the size of each halftone dot 41, 42, and 43. By using halftone dots 41, 42, and 43, the density and brightness can be adjusted by adjusting the density distribution (distribution of the size of each halftone dot) of the halftone dots 41, 42, and 43 on the light-shielding layer 32. Furthermore, as shown in the illustrated example, if there are halftone dots 41, 42, and 43 of different colors, the hue can be adjusted by adjusting the density distribution (arrangement and distribution of the size of each halftone dot) of different colors. In the illustrated example, the halftone dots 41, 42, and 43 forming the design layer 31 are provided on the light-shielding layer 32.

[0045] As an example, the design layer 31 shown in Figure 6 includes a first halftone dot 41 that forms a cyan dot pattern, a second halftone dot 42 that forms a magenta dot pattern, and a third halftone dot 43 that forms a yellow dot pattern. With this design layer 31, it is possible to display the design in full color.

[0046] Here, Figure 7A is an enlarged plan view showing the design layer 31, illustrating the arrangement pattern of the first halftone dots 41 on the light-shielding layer 32. In Figure 7A, the second halftone dots 42 and the third halftone dots 43 on the light-shielding layer 32 are omitted from the illustration. Similarly, Figure 7B is an enlarged plan view showing the design layer 31, illustrating the arrangement pattern of the second halftone dots 42 on the light-shielding layer 32. In Figure 7B, the first halftone dots 41 and the third halftone dots 43 on the light-shielding layer 32 are omitted from the illustration. Furthermore, Figure 7C is an enlarged plan view showing the design layer 31, illustrating the arrangement pattern of the third halftone dots 43 on the light-shielding layer 32. In Figure 7C, the first halftone dots 41 and the second halftone dots 42 on the light-shielding layer 32 are omitted from the illustration.

[0047] As shown in Figure 7A, the first halftone dots 41 are arranged in the first halftone dot arrangement direction AD1 and the second halftone dot arrangement direction AD2. That is, the first halftone dots 41 are arranged two-dimensionally on the light-shielding layer 32. The first halftone dots 41 are arranged in the first halftone dot arrangement direction AD1 with a constant first halftone dot arrangement pitch P1. Also, the first halftone dots 41 are arranged in the second halftone dot arrangement direction AD2 with a constant second halftone dot arrangement pitch P2. Each of the multiple first halftone dots 41 changes its size (area) according to its position on the light-shielding layer 32 in order to achieve the desired design expression.

[0048] In the illustrated example, the first dot arrangement direction AD1 is perpendicular to the second dot arrangement direction AD2. Furthermore, the first dot arrangement direction AD1 is parallel to the first reference direction DS1. Therefore, the first dots 41 are arranged in a direction parallel to the first edge 20a and the second edge 20b. Also, the second dot arrangement direction AD2 is parallel to the second reference direction DS2. Therefore, the first dots 41 are arranged in a direction parallel to the third edge 20c and the fourth edge 20d.

[0049] Similarly, as shown in Figure 7B, the second halftone dots 42 are arranged in the third halftone dot arrangement direction AD3 and the fourth halftone dot arrangement direction AD4. That is, the second halftone dots 42 are arranged two-dimensionally on the light-shielding layer 32. The second halftone dots 42 are arranged in the third halftone dot arrangement direction AD3 with a constant third halftone dot arrangement pitch P3. Also, the second halftone dots 42 are arranged in the fourth halftone dot arrangement direction AD4 with a constant fourth halftone dot arrangement pitch P4. Each of the multiple second halftone dots 42 changes its size (area) depending on its position on the light-shielding layer 32 in order to achieve the desired design expression. In the illustrated example, the third halftone dot arrangement direction AD3 is perpendicular to the fourth halftone dot arrangement direction AD4.

[0050] Furthermore, as shown in Figure 7C, the third halftone dots 43 are arranged in the fifth halftone dot arrangement direction AD5 and the sixth halftone dot arrangement direction AD6. That is, the third halftone dots 43 are arranged two-dimensionally on the light-shielding layer 32. The third halftone dots 43 are arranged in the fifth halftone dot arrangement direction AD5 with a constant fifth halftone dot arrangement pitch P5. Also, the third halftone dots 43 are arranged in the sixth halftone dot arrangement direction AD6 with a constant sixth halftone dot arrangement pitch P6. Each of the multiple third halftone dots 43 changes its size (area) according to its position on the light-shielding layer 32 in order to achieve the desired design expression. In the illustrated example, the fifth halftone dot arrangement direction AD5 is perpendicular to the sixth halftone dot arrangement direction AD6.

[0051] The first dot arrangement direction AD1, the third dot arrangement direction AD3, and the fifth dot arrangement direction AD5 are inclined relative to each other. That is, the first dot arrangement direction AD1, the third dot arrangement direction AD3, and the fifth dot arrangement direction AD5 form an angle with respect to each other that is greater than 0° and less than 90°. Similarly, the second dot arrangement direction AD2, the fourth dot arrangement direction AD4, and the sixth dot arrangement direction AD6 are inclined relative to each other. That is, the second dot arrangement direction AD2, the fourth dot arrangement direction AD4, and the sixth dot arrangement direction AD6 form an angle with respect to each other that is greater than 0° and less than 90°. By inclining the arrangement directions of the first dot 41, the second dot 42, and the third dot 43 in this way, moiré patterns caused by the regularity of the arrangement of the first dot 41, the second dot 42, and the third dot arrangement direction AD3 can be effectively made less noticeable. In the illustrated example, the third halftone arrangement direction AD3 is inclined 30° clockwise in the drawing relative to the first halftone arrangement direction AD1. The fifth halftone arrangement direction AD5 is inclined 30° clockwise in the drawing relative to the third halftone arrangement direction AD3.

[0052] The halftone dots 41, 42, and 43 can be formed on the light-shielding layer 32 by various printing methods, for example, by gravure printing. In the example shown in Figure 6, the first halftone dot 41, the second halftone dot 42, and the third halftone dot 43 are printed on the light-shielding layer 32 in this order.

[0053] The configuration of the halftone dots 41, 42, and 43 in the illustrated design layer 31 is merely illustrative, and various modifications are possible. For example, the design layer 31 may have only single-color halftone dots, two-color halftone dots, or four or more colors. Furthermore, the layering order of the first halftone dot 41, second halftone dot 42, and third halftone dot 43 on the light-shielding layer 32 is not limited to the illustrated example and can be modified in various ways.

[0054] Furthermore, in the illustrated example, the halftone dots 41, 42, and 43 forming the design layer 31 are provided on the light-shielding layer 32. However, the design layer 31 may further include a base layer provided on the light-shielding layer 32, on which the halftone dots 41, 42, and 43 are provided. The base layer can be composed of layers of various colors. That is, by providing a base layer, the color of the surface on which the halftone dots 41, 42, and 43 are placed can be selected without being restricted by the light-shielding layer 32. In this respect, it is preferable that the base layer be white in order to prevent the presence of the light-shielding layer 32 from affecting the design expression in the design layer 31. With a white design layer 31, the reflectance (especially the scattering reflectance) is also high, and the design can be clearly displayed.

[0055] Next, the light-shielding layer 32 will be described. The light-shielding layer 32 is provided so as to cover the design layer 31 from the side facing the display device 10. The light-shielding layer 32 has visible light shielding properties so that visible light from the display device 10 does not enter the design layer 31. Therefore, it is preferable that the visible light transmittance of the light-shielding layer 32 is lower than the visible light transmittance of the design layer 31. The light-shielding layer 32 may contain, for example, light-absorbing particles in the binder resin. Examples of light-absorbing particles include black pigments such as carbon black and titanium black. When the light-shielding layer 32 of sufficient thickness covers the design layer 31, the design formed by the design layer 31 can be displayed darkly and clearly. As a specific example, the thickness of the light-shielding layer 32 can be 1 μm or more and 20 μm or less.

[0056] Next, the transparent portion 26 will be described. The transparent portion 26 is the part of the decorative sheet 20 through which image light from the display device 10 is transmitted. Therefore, the transparent portion 26 is a part that has high visible light transmittance. The transparent portion 26 is configured as an opening provided in the pattern portion 24. In other words, the transparent portion 26 is configured as an unformed part of the pattern portion 24. In the example shown in Figure 2, the transparent portion 26 opens toward the display device 10 side.

[0057] However, the example is not limited to this, and as shown in Figure 8, transparent resin may be filled between adjacent pattern portions 24, and a transparent portion 26 may be formed by this transparent resin. In the example shown in Figure 8, the decorative sheet 20 further has a cover layer 33 as the layer furthest from the display device 10 along the normal direction ND. The cover layer 33 forms the transparent portion 26. The cover layer 33 is provided not only between adjacent pattern portions 24 but also to cover the pattern portions 24 from the normal direction ND. The cover layer 33 forms the observer-side surface layer of the decorative sheet 20. This cover layer 33 protects the pattern portions 24 and can effectively prevent foreign matter such as dust from entering the transparent portion 26.

[0058] The cover layer 33 is preferably formed from a material with a lower refractive index than the base material 22. By reducing the refractive index difference between the cover layer 33 and the base material 22, refraction at the interface between the cover layer 33 and the base material 22 can be effectively suppressed. This effectively prevents distortion of the image displayed by the display device 10. For example, when an acrylic resin having a refractive index of 1.53 to 1.57 is used as the base material 22 of the decorative sheet 20, preferred materials for the cover layer 33 include polymethyl methacrylate resin, fluororesin, silicone resin, polypropylene, urethane resin, polyethylene, nylon, polyvinyl chloride, epoxy, polycarbonate, polystyrene, etc., all having a refractive index of 1.33 to 1.77.

[0059] As shown in Figure 5, the decorative sheet 20 in plan view is divided into a patterned section 24 and a transparent section 26.

[0060] Here, Figure 5 is a partial plan view showing the decorative sheet 20. As shown in Figure 5, the multiple transparent portions 26 are arranged in the arrangement direction ADT. Each transparent portion 26 extends linearly in a direction nonparallel to the arrangement direction ADT. In the illustrated example, each transparent portion 26 extends linearly in the longitudinal direction LDT perpendicular to the arrangement direction ADT. Also, each transparent portion 26 has a generally constant width along the longitudinal direction LDT. In the illustrated example, both ends of the transparent portion 26 extend over the base material portion 22 to the edge of the base material portion 22.

[0061] In the example shown in Figure 5, the decorative sheet 20 in plan view is divided into patterned sections 24 and transparent sections 26. The patterned sections 24 and transparent sections 26 are arranged alternately without gaps in the arrangement direction ADT. Therefore, multiple patterned sections 24 are arranged in the arrangement direction ADT, similar to the transparent sections 26. Each patterned section 24 extends linearly in a direction non-parallel to the arrangement direction ADT. In the illustrated example, each patterned section 24 extends linearly in the longitudinal direction LDT perpendicular to the arrangement direction ADT. Also, each patterned section 24 has a generally constant width along the longitudinal direction LDT.

[0062] The ratio of the area of ​​the transparent portion 26 to the area of ​​the decorative sheet 20 in a plan view (hereinafter referred to as the "aperture ratio") is preferably 1% or more, more preferably 3% or more, and even more preferably 5% or more, in order to enable the observer to observe the image light from the display device 10 to a degree that is practically acceptable. On the other hand, when no image is displayed on the display surface 11 of the display device 10, the decorative sheet 20 displays the design of the pattern portion 24. The aperture ratio of the decorative sheet 20 is preferably 60% or less, more preferably 40% or less, and even more preferably 20% or less, in order to enable the observer to observe the design of the decorative sheet 20 clearly to a degree that is practically acceptable.

[0063] Next, an example of a manufacturing method for the decorative sheet 20 having the above configuration will be described.

[0064] First, a film material 22A (see Figure 9) that will form the base material 22 is prepared. The transparent resin film material described above can be used as such a film material 22A. An ink that will form the light-shielding layer 32 is applied to this film material 22A. Next, the ink on the film material 22A is dried and solidified to form a light-shielding film 32A on the base material 22 made of the film material 22A. The obtained light-shielding film 32A is formed as a solid film, unlike the light-shielding layer 32. Subsequently, a design film 31A is formed by providing a halftone pattern on the light-shielding film 32A. The halftone pattern can be obtained, for example, by gravure printing, which provides halftone dots of a predetermined pattern and size distribution on the light-shielding film 32A. In this way, a design film 31A containing a large number of halftone dots 41, 42, 43 is formed on the light-shielding film 32A. By following the above procedure, a laminate 35 is obtained, as shown in Figure 9, in which a light-shielding film 32A and a design film 31A are laminated on a film material 22A in that order.

[0065] Next, the patterned portion 24 and the transparent portion 26, which is the non-formed portion of the patterned portion 24, are formed by patterning the design film 31A and the light-shielding film 32A in the laminate 35. As an example, as shown in Figure 10, the transparent portion 26 can be formed by irradiating the laminate 35 with laser light at the position where the transparent portion 26 is to be formed and removing the design film 31A and the light-shielding film 32A in the irradiated area. At this time, the laminate 35 can be irradiated with laser light from the side of the film material 22A. The laser light passes through the film material 22A and is efficiently absorbed by the light-shielding film 32A. As a result, the light-shielding film 32A melts and evaporates together with the adjacent design film 31A. An opening is formed by the irradiation of the laser light, and the design layer 31 is obtained from the design film 31A with the opening formed, and the light-shielding layer 32 is obtained from the light-shielding film 32A with the opening formed. In this way, a decorative sheet 20 having a design portion 24 and a transparent portion 26 is obtained on the film material 22A.

[0066] Here, considering production efficiency, it is preferable to produce a long laminate 35 and irradiate the long laminate 35 with laser light to form the transparent portion 26. That is, it is preferable in terms of production efficiency to produce a long sheet-like member 18 having a pattern portion 24 and a transparent portion 26 by so-called roll-to-roll, as shown in Figure 11. The sheet-like member 18 shown in Figure 11 is a sheet-like member that extends in a long, narrow direction LLD. The sheet-like member 18 can be wound onto a winding core 19 around a winding axis RA that is not parallel to the long direction LLD, and especially around a winding axis RA that is perpendicular to the long direction LLD, and can be handled as a winding body 17. The sheet-like member 18 is unwound from the winding body 17, and the unwound sheet-like member 18 is cut to obtain a decorative sheet 20. In this case, considering the yield of the sheet-like member 18, it is preferable to cut the sheet-like member 18 along the cutting line CL which is perpendicular to the longitudinal direction LLD. In the example shown in Figure 11, the longitudinal edge 18a of the sheet-like member 18 becomes the first end edge 20a and the second end edge 20b, which are the long sides of the decorative sheet 20.

[0067] In the example shown in Figure 11, the pattern portion 24 and the transparent portion 26 of the sheet-like member 18 extend linearly in a direction non-parallel to the longitudinal direction LLD, particularly in a direction inclined 45° clockwise with respect to the longitudinal direction LLD. In the decorative sheet 20 obtained by cutting this sheet-like member 18 in a direction perpendicular to the longitudinal direction LLD, the pattern portion 24 and the transparent portion 26 are inclined with respect to the edges 20a and 20b of the decorative sheet 20 corresponding to the longitudinal edge 18a of the sheet-like member 18, particularly inclined 45° clockwise. Similarly, in the resulting decorative sheet 20, the pattern portion 24 and the transparent portion 26 are inclined with respect to the edges 20c and 20d of the decorative sheet 20 along the cutting line CL, particularly inclined 45° counterclockwise.

[0068] In this embodiment, the decorative sheet 20 has a translucent portion 26 that extends linearly. Such a translucent portion 26 can be produced by continuously or intermittently emitting laser light from the laser irradiation device 100 in a high-speed pulsed manner while moving the laminate 35 and the laser irradiation device 100 relative to each other.

[0069] Furthermore, in the manufacturing of the decorative sheet 20 shown in Figure 8, an ink that will form a cover layer 33 is applied to the created pattern portion 24 and transparent portion 26. Next, by drying and solidifying the ink on the base material portion 22 and the pattern portion 24, a cover layer 33 can be created on the base material portion 22 and the pattern portion 24, and the cover layer 33 will form the transparent portion 26.

[0070] Next, the operation of the decorative sheet-equipped display device 1 of this embodiment will be described.

[0071] When the display device 10 is in a non-display state and no image light is emitted from the display surface 11, the decorative sheet 20 placed on top of the display surface 11 of the display device 10 is visible, as shown in Figure 1. The design layer 31 on the decorative sheet 20, which is located on the observer side of the light-shielding layer 32, is observed directly in the example shown in Figure 2, and through the transparent cover layer 33 in the example shown in Figure 8. The design layer 31 can clearly display excellent designs with rich expressive power using halftone dots 41, 42, and 43. In other words, since the display device, which is normally observed as black when the image is not displayed, can be concealed, the display device 10 can be installed while ensuring harmony and unity of design with the surrounding environment. Furthermore, the range of applications for the display device 10 is rapidly expanding these days, and by using the decorative sheet 20, it is possible to apply the display device 10 to surfaces of automobiles, furniture, and building materials where design is important.

[0072] When the display surface 11 is in the display state, image light is emitted from the display surface 11. The image light emitted from the display surface 11 passes through the base material portion 22 of the decorative sheet 20 and heads toward the pattern portion 24 or the transparent portion 26. The image light incident on the transparent portion 26 passes through the transparent portion 26 and is emitted from the decorative sheet 20 toward the observer. The image light that has passed through the transparent portion 26 forms an image on the display surface 11 that is observed, as shown in Figure 3.

[0073] On the other hand, image light directed towards the pattern portion 24 is absorbed by the light-shielding layer 32 located on the side of the pattern portion 24 closest to the display device 10. In other words, image light from the display device 10 does not pass through the pattern portion 24. Therefore, the image light does not illuminate the design layer 31 from the back side. This effectively prevents the image displayed by the display device 10 from mixing with the design formed on the pattern portion 24 of the decorative sheet 20. It also effectively prevents the design of the pattern portion 24 from becoming conspicuous when the display device 10 is displaying an image. As a result, when the display device 10 is in the display state, the image displayed by the display device 10 can be clearly observed.

[0074] Incidentally, when various designs were tested to form on the design layer 31 of the decorative sheet 20, striped patterns were sometimes observed on the decorative sheet 20, depending on the design displayed in the pattern area. Such cosmetic defects could be fatal in light of the intended use of the decorative sheet 20. The inventors of this case conducted thorough research on this matter and hypothesized that the cause of the striped patterns was moiré caused by interference between the regularity of the arrangement of the transparent areas 26 and the regularity of the arrangement of the halftone dots 41, 42, and 43 in the design layer 31 of the pattern area 24 that forms the design. Based on this hypothesis, further research confirmed that the striped patterns can be effectively made less noticeable by having the transparent areas 26 have the configuration described below.

[0075] In other words, in this embodiment, the decorative sheet 20 has the following configuration, and due to this configuration, the striped pattern can be made less noticeable. Therefore, the decorative sheet 20 according to this embodiment can display an excellent design that was expected in advance, while concealing the display device 10 when it is not in use, while still allowing the display device 10 to display an image. This embodiment, which can ensure harmony and uniformity with the surrounding environment when installing the display device 10, is particularly suitable for surface components of articles where design is of particular importance, such as automobiles, furniture, and building materials.

[0076] First, in this embodiment, the transparent portion 26 extends in a direction inclined with respect to the arrangement direction of the halftone dots of the same color included in the plurality of halftone dots 41, 42, 43. In this case, the arrangement direction ADT of the plurality of transparent portions 26 is usually inclined with respect to the arrangement direction of the halftone dots of the same color included in the plurality of halftone dots 41, 42, 43. In particular, the arrangement direction ADT of a linearly extending transparent portion 26 is perpendicular to the longitudinal direction LDT of the transparent portion 26 and is inclined with respect to the arrangement direction of the halftone dots of the same color included in the plurality of halftone dots 41, 42, 43. Generally, in order to make moiré patterns less noticeable, it is considered effective to incline the directions in which two elements that cause interference exhibit regularity relative to each other. According to the decorative sheet 20 of this embodiment, the striped pattern caused by moiré resulting from the superposition of the regularity of the arrangement of halftone dots and the regularity of the arrangement of the transparent portion 26 can be effectively made less noticeable.

[0077] In the illustrated example, the longitudinal LDT of the transparent area 26 is inclined with respect to the arrangement directions AD1 to AD6 of the halftone dots 41, 42, and 43 of each color. Therefore, according to the illustrated example, the striped pattern can be made less noticeable more effectively.

[0078] Furthermore, in the illustrated example, the transparent portion 26 extends linearly in a direction that forms an angle of 10° to 80° with respect to the arrangement direction of the halftone dots of the same color included in the plurality of halftone dots 41, 42, 43. With such a decorative sheet 20, the striped pattern can be made less noticeable more effectively. In particular, in the illustrated example, the transparent portion 26 extends linearly in a direction that forms an angle of 10° to 80° with respect to the arrangement direction of any of the halftone dots of any color included in the plurality of halftone dots 41, 42, 43. Therefore, with the illustrated example, the striped pattern can be made less noticeable more effectively.

[0079] Incidentally, in the patterned portion 24 of the decorative sheet 20, the halftone dots that represent one of the color components of the design to be displayed are usually arranged in a direction parallel to the edges 20a to 20d of the decorative sheet 20. This is because, when manufacturing a single-sheet decorative sheet 20, the edges 20a to 20d of the decorative sheet 20 are easy to use as a reference for the arrangement pattern of halftone dots on the outer shape of the decorative sheet 20. Furthermore, when the decorative sheet 20 is manufactured as a long sheet-like member 18, the halftone dots that represent one of the color components of the design to be displayed are usually arranged in the longitudinal direction LLD of the sheet-like member 18. This is because the longitudinal direction LLD of the sheet-like member 18 is easy to use as a reference for the arrangement pattern of halftone dots on the outer shape of the sheet-like member 18. And, as mentioned above, considering the yield, the decorative sheet 20 is manufactured by cutting the sheet-like member 18 along a cutting line CL perpendicular to the longitudinal direction LLD. In the decorative sheet 20 obtained from the sheet-like member 18 in this way, the halftone dots that display any of the color components are arranged in a direction parallel to the edges 20a to 20d of the decorative sheet 20.

[0080] In this regard, in the decorative sheet 20 according to this embodiment, the transparent portion 26 extends linearly in a direction inclined with respect to the edges 20a to 20d of the decorative sheet 20. As a result, the arrangement direction ADT of the multiple transparent portions 26 also tends to extend linearly in a direction inclined with respect to the edges 20a to 20d of the decorative sheet 20. As explained above, for ease of positioning the halftone dots, halftone dots that display any of the color components of the design to be displayed are usually arranged in a direction parallel to the edges 20a to 20d of the decorative sheet 20. In the illustrated example, the first halftone dot 41 is arranged in directions AD1 and AD2 parallel to the edges 20a to 20d of the decorative sheet 20. Therefore, the arrangement direction ADT of the transparent portions 26 that extend linearly in a direction inclined with respect to the edges of the decorative sheet 20 becomes inclined with respect to the arrangement direction of the halftone dots that display any of the color components. As a result, by tilting the longitudinal LDT of the transparent portion 26 relative to the edge of the decorative sheet 20, the striped pattern caused by moiré resulting from the overlap of the regularity of the arrangement of the halftone dots and the regularity of the arrangement of the transparent portion 26 can be effectively made less noticeable.

[0081] In particular, in the illustrated example, the transparent portion extends linearly in a direction that forms an angle of 10° to 80° with respect to the four edges 20a to 20d of the decorative sheet 20. According to this specific example, the arrangement direction ADT of the multiple transparent portions 26 also tends to form an angle of 10° to 80° with respect to the arrangement direction of the halftone dots 41 that display any of the color components of the design displayed by the transparent portions 26. Therefore, the striped pattern caused by moiré resulting from the overlap of the regularity of the arrangement of the halftone dots 41 and the regularity of the arrangement of the transparent portions 26 can be effectively made less noticeable.

[0082] Furthermore, as shown in Figure 12, it is preferable that the arrangement pitch PT of the multiple transparent areas 26 is approximately the same as the arrangement pitch of the halftone dots of the same color included in the multiple halftone dots 41, 42, and 43. Specifically, it is preferable that the difference between the arrangement pitch PT of the multiple transparent areas 26 and the arrangement pitch of the halftone dots of the same color included in the multiple halftone dots 41, 42, and 43 is -5 μm or less or 5 μm or more. In other words, it is preferable that the magnitude of the difference between the arrangement pitch PT of the multiple transparent areas 26 and the arrangement pitch of the halftone dots of the same color included in the multiple halftone dots 41, 42, and 43 is 5 μm or more. Here, Figure 12 is an enlarged partial plan view showing the decorative sheet 20. However, in Figure 12, the first halftone dot 41 and the third halftone dot 43 are omitted from the illustration, and the positional relationship between the second halftone dot 42 and the pattern area 24 and the transparent areas 26 is shown.

[0083] The array pitch PT of the transparent parts 26 is the average value of the distance along the array direction of any two adjacent transparent parts 26 in the array direction of the multiple transparent parts 26. The array direction of the multiple transparent parts 26 is the direction in which the average value of the distance along the array direction of any two adjacent transparent parts 26 in that direction is minimized. The "distance along the array direction of the two transparent parts 26" used to determine the array pitch PT of the transparent parts 26 is determined as the distance along the array direction of the center positions in the array direction of the two transparent parts 26 in question, as will be described later.

[0084] The arrangement pitch of halftone dots of the same color is the average value of the distance along the arrangement direction of any two adjacent halftone dots of the same color. The "distance along the arrangement direction of two halftone dots of the same color" is specified as the distance along the arrangement direction of the centroid positions of the two halftone dots of the same color in question.

[0085] However, the size of halftone dots varies depending on the shade and color of the design to be displayed in the design layer, and they may not be placed in the positions where they should be arranged in a regular pattern. Such omissions of halftone dots can be identified from the overall arrangement of halftone dots of the same color. The distance between two halftone dots located on either side of an omitted halftone dot in the direction of the arrangement of the target halftone dots is approximately an integer multiple of the arrangement pitch of the halftone dot to be identified. When determining the pitch of the halftone dots, the distance between two halftone dots located on either side of an omitted halftone dot is used as the value obtained by dividing the actually measured distance by the number obtained by adding 1 to the number of omitted halftone dots.

[0086] Furthermore, when multiple halftone dots are used, it is possible that the halftone dots of the target color may be completely or partially covered by halftone dots of other colors. If the target halftone dot is completely covered and cannot be observed, the arrangement pitch of the halftone dots of that color is determined in the same way as when the halftone dot is omitted as described above. On the other hand, if the target halftone dot is partially covered by halftone dots of other colors, the overall shape is determined by assuming that the partially covered halftone dot has a circular shape as a whole, and the centroid position of the halftone dot, which is necessary for determining the arrangement pitch, is determined based on the overall shape.

[0087] Furthermore, identifying the centroid of each halftone dot, and determining the overall shape of halftone dots partially covered by halftone dots of other colors, can be achieved through image processing.

[0088] In the example shown in Figure 12, the array pitch PT of the multiple transparent areas 26 is 5 μm or more smaller or 5 μm or more larger than the third halftone array pitch P3 and fourth halftone array pitch P4 of the same color halftone dots 42 included in the multiple halftone dots 41, 42, and 43. In other words, the difference between the array pitch PT of the multiple transparent areas 26 and the third halftone array pitch P3 of the same color halftone dots 42 is 5 μm or more, and the difference between the array pitch PT of the multiple transparent areas 26 and the fourth halftone array pitch P4 of the same color halftone dots 42 is 5 μm or more. According to this specific example, each second halftone dot 42 is more likely to remain in the pattern area 24. In other words, the occurrence of second halftone dots 42 that completely overlap with the transparent areas 26 can be effectively suppressed. Therefore, the design layer 31 of the pattern area 24 makes it possible to display the design with the predetermined shades and color schemes. Furthermore, by setting the difference between the array pitch PT of the transparent portion 26 and the array pitch of the halftone dots 42 of the same color to 5 μm or more, the striped pattern caused by moiré due to the overlapping of the array of the transparent portion 26 and the array of halftone dots can be effectively made less noticeable.

[0089] In the illustrated example, although not shown in Figure 12, the array pitch PT of the multiple transparent areas 26 differs by 5 μm or more from the array pitch of any halftone dot along any direction. Specifically, in the illustrated example, the difference between the array pitch PT of the multiple transparent areas 26 and the first halftone dot array pitch P1 along the first halftone dot array direction AD1 of the first halftone dot 41 is 5 μm or more. Similarly, in the illustrated example, the difference between the array pitch PT of the multiple transparent areas 26 and the second halftone dot array pitch P2 along the second halftone dot array direction AD2 of the first halftone dot 41 is 5 μm or more. Furthermore, in the illustrated example, the difference between the array pitch PT of the multiple transparent areas 26 and the fifth halftone dot array pitch P5 along the fifth halftone dot array direction AD5 of the third halftone dot 43 is 5 μm or more. Similarly, in the illustrated example, the difference between the array pitch PT of the multiple transparent areas 26 and the sixth halftone dot array pitch P6 along the sixth halftone dot array direction AD6 of the third halftone dot 43 is 5 μm or more.

[0090] The difference between the arrangement pitch PT of the transparent portion 26 and the arrangement pitch of the halftone dots 42 of the same color is preferably 5 μm or more, as described above, more preferably 20 μm or more, and even more preferably 50 μm or more. In this case, the above-mentioned effects can be achieved, namely, the design layer 31 can exhibit its design properties more effectively, and the moiré pattern caused by the regularity between the transparent portion 26 and the halftone dots 42 can be effectively made less noticeable.

[0091] As shown in Figure 13, each transparent portion 26 has a first longitudinal edge 27 and a second longitudinal edge 28 that face each other and extend in the longitudinal direction LDT of the transparent portion 26. As shown in Figure 13, it is preferable that each of the first longitudinal edge 27 and the second longitudinal edge 28 includes a non-linear portion, in other words, a portion that is not straight. It is preferable that neither the first longitudinal edge 27 nor the second longitudinal edge 28 includes a straight portion in the same region along the longitudinal LDT of the transparent portion 26. It is preferable that each of the first longitudinal edge 27 and the second longitudinal edge 28 is non-linear over its entire length, in other words, not straight over its entire length. It is preferable that the first longitudinal edge 27 and the second longitudinal edge 28 are different from each other. It is preferable that the first longitudinal edge 27 and the second longitudinal edge 28 are different from each other in any region along the longitudinal LDT of the transparent portion 26. The first longitudinal edge 27 and the second longitudinal edge 28 are preferably not symmetrical. For example, the first longitudinal edge 27 and the second longitudinal edge 28 are preferably not line-symmetrical or rotationally symmetrical. The width of the permeable portion 26, expressed by the distance between the first longitudinal edge 27 and the second longitudinal edge 28 along the direction perpendicular to the longitudinal direction LDT of the permeable portion 26, is preferably not constant. The width of the permeable portion 26 is preferably continuously changing rather than changing in steps or intermittently, and preferably continuously changing over the entire length of the permeable portion 26.

[0092] The linearly extending transparent portion 26 has a larger opening area compared to the case where the transparent portions are arranged in two dimensions. With these configurations of the first longitudinal edge 27 and the second longitudinal edge 28, the presence of the transparent portion 26 can be made less visible. In addition, since the regularity of the arrangement of the transparent portion 26 can be weakened, the striped pattern caused by moiré due to the overlapping of the arrangement of the transparent portion 26 and the arrangement of the halftone dots can be effectively made less noticeable. As a result, the pattern portion 24 can display an excellent design.

[0093] Furthermore, in the illustrated example, the first longitudinal edge 27 extends along the longitudinal LDT of the transparent portion 26, meandering, or in other words, curving on both sides in the arrangement direction ADT perpendicular to the longitudinal LDT of the transparent portion 26. According to this example, the first longitudinal edge 27 of the transparent portion 26 can be made more indistinct, making the presence of the transparent portion 26 even less visible. In addition, the regularity of the arrangement of the transparent portion 26 can be weakened, so the striped pattern caused by moiré resulting from the superposition of the arrangement of the transparent portion 26 and the arrangement of the halftone dots can be effectively made less noticeable. As a result, the pattern portion 24 can display an excellent design.

[0094] In the similarly illustrated example, the second longitudinal edge 28 extends along the longitudinal LDT of the transparent portion 26, meandering, or in other words, curving on both sides in the arrangement direction ADT perpendicular to the longitudinal LDT of the transparent portion 26. According to this example, the second longitudinal edge 28 of the transparent portion 26 can be made more indistinct, making the presence of the transparent portion 26 even less visible. In addition, the regularity of the arrangement of the transparent portion 26 can be weakened, so the striped pattern caused by moiré resulting from the overlap of the arrangement of the transparent portion 26 and the arrangement of the halftone dots can be effectively made less noticeable. As a result, the pattern portion 24 can display an excellent design.

[0095] As shown in Figure 11, the first longitudinal edge 27 includes a plurality of outer protrusions 27A projecting away from the second longitudinal edge 28 in the alignment direction ADT perpendicular to the longitudinal LDT of the transparent portion 26, and a plurality of inner protrusions 27B projecting toward the second longitudinal edge 28 in the alignment direction ADT. In the illustrated example, the outer protrusions 27A and inner protrusions 27B are alternately located along the longitudinal LDT. In such an example, the spacing length D1X along the longitudinal LDT of two adjacent outer protrusions 27A of the first longitudinal edge 27 is preferably smaller than the alignment pitch of any halftone dot of the same color included in the plurality of halftone dots 41, 42, 43, and more preferably smaller than half the alignment pitch of any halftone dot of the same color. More preferably, the spacing length D1X is smaller than the array pitch of any of the halftone dots of any of the colors included in the plurality of halftone dots 41, 42, 43, and more preferably, is smaller than half the array pitch of any of the halftone dots of any of the colors.

[0096] Similarly, in the example shown in Figure 11, the second longitudinal edge 28 includes a plurality of outer protrusions 28A projecting away from the first longitudinal edge 27 in the arrangement direction ADT perpendicular to the longitudinal LDT, and a plurality of inner protrusions 28B projecting toward the first longitudinal edge 27 in the arrangement direction ADT. In the illustrated example, the outer protrusions 28A and inner protrusions 28B are alternately located along the longitudinal LDT. In such an example, the spacing length D2X along the longitudinal LDT of two adjacent outer protrusions 28A of the second longitudinal edge 28 is preferably smaller than the arrangement pitch of any of the same colored halftone dots included in the plurality of halftone dots 41, 42, 43, and more preferably smaller than half the arrangement pitch of any of the same colored halftone dots. More preferably, the spacing length D2X is smaller than the array pitch of any of the halftone dots of any of the colors included in the multiple halftone dots 41, 42, 43, and more preferably, is smaller than half the array pitch of any of the halftone dots of any of the colors.

[0097] In this example, it is possible to prevent the meandering period of the first longitudinal edge 27 from becoming too long with respect to the arrangement pitch P1 to P6 of the halftone dots 41, 42, 43, and also to prevent the meandering period of the second longitudinal edge 28 from becoming too long. Unlike this example, if the outer protrusion 27A of the first longitudinal edge 27 and the outer protrusion 28A of the second longitudinal edge 28 extend long along the longitudinal LDT, the area where the halftone dots 41, 42, 43 are provided, i.e., the area of ​​the pattern 24, becomes narrower in that region. In other words, by setting the aforementioned spacing lengths D1X and D2X to be short, it is possible to effectively avoid noticeable increases or decreases in the width of the transparent area 26 over a visible length, and to effectively avoid localized decreases in the density of the halftone dots 41, 42, 43. As a result, the transparent area 26 can be effectively made less visible, and at the same time, an excellent design can be displayed by the pattern 24.

[0098] Furthermore, the spacing lengths D1X and D2X can be adjusted, for example, by controlling the irradiation conditions of the laser light used to form the transparent portion 26 in the manufacturing method described above, or more specifically, the irradiation conditions when pulsed laser light is irradiated.

[0099] Furthermore, as shown in the example in Figure 13, if the positions of the first longitudinal edge 27 and the second longitudinal edge 28 change along the longitudinal LDT of the transparent portion 26 in the alignment direction ADT, the width WT of the transparent portion 26 along the alignment direction ADT will vary at each position along the longitudinal LDT. The width WT of such a transparent portion 26 is determined by assuming the positions of the first longitudinal edge 27 and the second longitudinal edge 28 as follows, and by defining the distance between the virtual first longitudinal edge 27V and the second longitudinal edge 28V along the alignment direction ADT.

[0100] For determining the width WT, the virtual first longitudinal edge 27V is assumed to be located at an intermediate position in the array direction ADT between one of the multiple outer protrusions 27A included in the first longitudinal edge 27 that is furthest from the second longitudinal edge 28 of the transparent portion 26 containing the first longitudinal edge 27, along the array direction ADT, and one of the multiple inner protrusions 27BX that is closest to the second longitudinal edge 28 of the transparent portion 26 containing the first longitudinal edge 27, along the array direction ADT. For determining the width WT, the virtual second longitudinal edge 28V is assumed to be located at an intermediate position in the array direction ADT between one of the multiple outer protrusions 28A included in the second longitudinal edge 28 that is furthest from the first longitudinal edge 27 of the transparent portion 26 containing the second longitudinal edge 28 along the array direction ADT, and one of the multiple inner protrusions 28BX that is closest to the first longitudinal edge 27 of the transparent portion 26 containing the second longitudinal edge 28 along the array direction ADT.

[0101] As described above, the array pitch PT of the transparent portion 26 is determined as the average value of the distance between the two transparent portions 26 along the array direction. The distance between the two transparent portions 26 along the array direction is determined as the distance along the array direction of the center positions in the array direction for the two transparent portions 26 in question. The center positions of the transparent portions 26 in the array direction ADT of the multiple transparent portions 26 are the center positions in the array direction ADT of the virtual first longitudinal edge 27V and second longitudinal edge 28V determined by the method described above.

[0102] In the embodiment described above, the decorative sheet 20 has a patterned portion 24 having a design layer 31 containing a plurality of halftone dots 41, 42, 43, and a plurality of transparent portions 26 which are unformed portions of the patterned portion 24. In the patterned portion 24 of such a decorative sheet 20, the halftone dots that display any of the color components of the design are usually arranged along the edges 20a to 20d of the decorative sheet 20. On the other hand, in this embodiment, the transparent portions 26 extend linearly in the longitudinal direction LDT which is inclined with respect to the edges 20a to 20d of the decorative sheet 20. Therefore, the arrangement direction ADT of the plurality of transparent portions 26 is also inclined with respect to the edges 20a to 20d of the decorative sheet 20, and as a result, it tends to be inclined with respect to the arrangement direction of the halftone dots that display any of the color components of the design displayed by the patterned portion 24. Generally, to make moiré patterns less noticeable, it is considered effective to incline the direction in which the two elements that cause interference exhibit regularity. Therefore, according to this embodiment, the striped pattern caused by moiré resulting from the overlapping of the regularity of the arrangement of halftone dots and the regularity of the arrangement of the transparent portion 26 can be effectively made less noticeable. As a result, the decorative sheet 20 according to this embodiment can display an excellent design that was expected in advance, while concealing the display device 10 when it is not in use, while still allowing the display device 10 to display an image. This embodiment, which can ensure harmony and uniformity with the surrounding environment when installing the display device 10, is particularly suitable for surface components of articles where design is of particular importance, such as automobiles, furniture, and building materials.

[0103] Furthermore, in the embodiment described above, the decorative sheet 20 has a patterned portion 24 having a design layer 31 containing a plurality of halftone dots 41, 42, 43, and a plurality of transparent portions 26 which are unformed portions of the patterned portion 24. The transparent portions 26 extend linearly in the longitudinal direction LDT which is inclined with respect to the arrangement direction of halftone dots of the same color contained in the plurality of halftone dots 41, 42, 43. Therefore, the arrangement direction ADT of the plurality of transparent portions 26 tends to be inclined with respect to the arrangement direction of halftone dots that display any of the color components of the design displayed by the patterned portion 24. Generally, in order to make moiré patterns less noticeable, it is considered effective to incline the direction in which the two elements that cause interference exhibit regularity. Therefore, according to this embodiment, the striped pattern caused by moiré resulting from the superposition of the regularity of the arrangement of halftone dots 41, 42, 43 and the regularity of the arrangement of the transparent portions 26 can be effectively made less noticeable. As a result, the decorative sheet 20 according to this embodiment can display an excellent design that was expected in advance, while concealing the display device 10, which is in a non-display state, while enabling the display of an image by the display device 10. This embodiment, which can ensure harmony and uniformity with the surrounding environment when installing the display device 10, is particularly suitable for surface components of articles where design is of particular importance, such as automobiles, furniture, and building materials.

[0104] In this embodiment, the design layer 31 does not need to contain halftone dots of multiple colors; it may contain only halftone dots of a single color. In such an example, "halftone dots of the same color included in multiple halftone dots" refers to the single-color halftone dots included in the design layer 31.

[0105] In one specific example of the embodiment described above, the decorative sheet 20 further includes a transparent base material portion 22 that is positioned facing the pattern portion 24 and the transparent portion 26 and supports at least the pattern portion 24. At least one end of the transparent portion 26 extends to the edge of the base material portion 22. According to this specific example, the transparent portion 26 can be made to extend to the edge of the decorative sheet 20. This allows the decorative sheet 20 to have a more uniform structure over its entire surface, and to effectively conceal the display device 10. On the other hand, even if the transparent portion 26 is divided into multiple parts on the base material portion 22, the multiple divided transparent portions 26 can be held together by the base material portion 22. Therefore, the display device concealment ability of the decorative sheet 20 can be improved while maintaining the handling of the decorative sheet 20.

[0106] In the embodiment described above, the winding body 17 has a sheet-like member 18 that includes a patterned portion 24 having a design layer 31 containing a plurality of halftone dots, and a plurality of transparent portions 26 which are non-formed portions of the patterned portion 24. The sheet-like member 18 is used as a decorative sheet 20. The winding body 17 is formed by winding the sheet-like member 18 around a winding axis RA that is not parallel to the longitudinal direction LLD of the sheet-like member 18. In the patterned portion 24 of such a sheet-like member 18, the halftone dots 41, 42, and 43 that represent any of the color components of the design are usually arranged along the longitudinal direction LLD of the sheet-like member 18. On the other hand, in this embodiment, the transparent portions 26 extend linearly in the longitudinal direction LDT which is not parallel to the longitudinal direction LLD of the sheet-like member 18. Therefore, in the decorative sheet 20 cut from this sheet-like member 18 with yield in mind, the arrangement direction ADT of the transparent portion 26 tends to be inclined with respect to the arrangement directions P1 to P6 of the halftone dots 41, 42, 43 that represent any of the color components of the design displayed by the pattern portion 24. Generally, to make moiré patterns less noticeable, it is considered effective to incline the direction in which the two elements causing interference exhibit regularity. Therefore, according to this embodiment, the striped pattern caused by moiré resulting from the superposition of the regularity of the arrangement of halftone dots 41, 42, 43 and the regularity of the arrangement of the transparent portion 26 can be effectively made less noticeable.

[0107] In one specific example of the embodiment described above, the transparent portion 26 extends linearly in the longitudinal direction LDT, which forms an angle of 10° to 80° with respect to the longitudinal direction LLD of the sheet-like member 18. According to this specific example, in the decorative sheet 20 cut from the sheet-like member 18, the arrangement direction ADT of the multiple transparent portions 26 also tends to form an angle of 10° to 80° with respect to the arrangement directions P1 to P6 of the halftone dots 41, 42, 43 that represent any of the color components of the design displayed by the pattern portion 24. Therefore, the striped pattern caused by moiré resulting from the overlap of the regularity of the arrangement of the halftone dots and the regularity of the arrangement of the transparent portions 26 can be effectively made less noticeable.

[0108] Although one embodiment has been described with reference to several specific examples, these examples are not intended to limit the embodiment. The above-described embodiment can be implemented with various other examples, and various omissions, substitutions, modifications, and additions can be made without departing from its essence.

[0109] An example of modification will be described below with reference to the drawings. In the following description and the drawings used therein, parts that can be configured in the same way as in the specific example described above will be given the same reference numerals as those used for the corresponding parts in the specific example described above, and redundant explanations will be omitted.

[0110] In the specific example described above, the decorative sheet-equipped display device 1 was shown to have a display device 10 and a decorative sheet 20 placed on the display surface 11 of the display device 10, but it is not limited to this example. For example, as shown in Figures 14 and 15, the decorative sheet-equipped display device 1 may have a panel member 15. The panel member 15 has a transparent area 15a at a position facing the display surface 11 of the display device 10. The transparent area 15a is configured as an opening or transparent portion provided in the panel member 15, and allows the transmission of image light. As an example, the panel member 15 may be configured as a wall material or casing at the location where the display device 10 is installed.

[0111] In the example shown in Figure 14, the panel member 15 is positioned between the display device 10 and the decorative sheet 20. In this example, the display surface 11 is exposed across the entire transparent region 15a of the panel member 15. The decorative sheet 20 covers the entire transparent region 15a of the panel member 15. That is, the display surface 11 of the display device 10 and the decorative sheet 20 have a shape and size that is the same as or capable of encompassing the transparent region 15a of the panel member 15. Therefore, the area of ​​the transparent region 15a of the panel member 15 is less than or equal to the area of ​​the display surface 11 and less than or equal to the area of ​​the decorative sheet 20.

[0112] On the other hand, unlike the illustrated example, the panel member 15 may be positioned on the opposite side of the decorative sheet 20 from the display device 10. That is, the decorative sheet 20 may be positioned between the panel member 15 and the display device 10. In this example, since the decorative sheet 20 conceals the display device 10, the transparent area 15a of the panel member 15 only needs to have a size and shape that is enclosed by the decorative sheet 20.

[0113] Furthermore, although the above-described embodiment shows an example in which the display device 10 has a surface light source device 12 and a light-shielding sheet 14, as already mentioned, the invention is not limited to this example. A dot matrix type display device, such as a liquid crystal display device or an organic EL display device, can be used together with the decorative sheet 20. In a dot matrix type display device 10, a desired image can be displayed by individually controlling the light emission state of the pixels that form the dots. In the example shown in Figures 15 and 16, the display device 10 is configured as a liquid crystal display panel and has a surface light source device 12 and a display panel 16 (for example, a liquid crystal display panel) illuminated by the surface light source device 12.

[0114] As a specific example, Figure 16 shows an example of a pixel array. In the example shown in Figure 16, the display device 10 includes a first pixel 51, a second pixel 52, and a third pixel 53 that emit different colors from each other. The multiple first pixels 51 are arranged in a first pixel array direction ADP1 and a second pixel array direction ADP2 that are non-parallel to each other. In particular, in the illustrated example, the first pixel array direction ADP1 and the second pixel array direction ADP2 are perpendicular to each other. The multiple first pixels 51 are arranged in the first pixel array direction ADP1 with a first pixel array pitch PP1 and in the second pixel array direction ADP2 with a second pixel array pitch PP2.

[0115] Similarly, multiple second pixels 52 are arranged in the first pixel array direction ADP1 with a first pixel array pitch PP1, and in the second pixel array direction ADP2 with a second pixel array pitch PP2. Multiple third pixels 53 are arranged in the first pixel array direction ADP1 with a first pixel array pitch PP1, and in the second pixel array direction ADP2 with a second pixel array pitch PP2. The first pixels 51, second pixels 52, and third pixels 53 are arranged alternately in the first pixel array direction ADP1. Multiple first pixels 51 are arranged continuously in the second pixel array direction ADP2, multiple second pixels 52 are arranged continuously in the second pixel array direction ADP2, and multiple third pixels 53 are arranged continuously in the second pixel array direction ADP2. As illustrated by the dotted line in Figure 16, a unit pixel is formed by one first pixel 51, one second pixel 52, and one third pixel 53 adjacent to each other in the first pixel array direction ADP1.

[0116] By the way, in combination with such a display device 10, if the transparent parts 26 are arranged regularly, moiré patterns will occur due to the superposition of the regular arrangement of the transparent parts and the regular arrangement of pixels on the display device. Since moiré patterns directly degrade the quality of the image displayed by the display device, this can be considered a serious defect in the display device. As a means of solving this defect, it is preferable to configure the transparent parts 26 as follows.

[0117] In other words, it is preferable that the transparent portion 26 extends linearly in the longitudinal direction LDT which is not parallel to the arrangement directions ADP1 and ADP2 of the pixels 51, 52, and 53 of the same color included in the display device 10. It is even more preferable that the transparent portion 26 extends linearly in the longitudinal direction LDT which is not parallel to the arrangement directions ADP1 and ADP2 of the pixels 51, 52, and 53 of any color included in the display device 10. In this case, the arrangement direction ADT of the multiple transparent portions 26 tends to extend in a direction inclined with respect to the arrangement direction of the halftone dots of the same color included in the multiple halftone dots 41, 42, and 43. Generally, in order to make moiré patterns less noticeable, it is considered effective to incline the directions in which two elements that cause interference exhibit regularity relative to each other. Therefore, according to this example, the striped pattern caused by moiré resulting from the superposition of the regularity of the pixel arrangement and the regularity of the arrangement of the transparent portion 26 can be effectively made less noticeable.

[0118] Furthermore, in the illustrated example, the transparent portion 26 extends linearly in a direction that forms an angle of 10° to 80° with respect to the arrangement directions ADP1 and ADP2 of pixels 51, 52, and 53 of the same color. In particular, in the illustrated example, the transparent portion 26 extends linearly in a direction that forms an angle of 10° to 80° with respect to the arrangement directions ADP1 and ADP2 of pixels 51, 52, and 53 of any color. According to this example, the striped pattern caused by moiré resulting from the superposition of the regularity of the arrangement of pixels 51, 52, and 53 and the regularity of the arrangement of the transparent portion 26 can be effectively made less noticeable.

[0119] In this embodiment, the dot matrix display device 10 does not need to contain pixels of multiple colors; it may contain only pixels of a single color. In such an example, "pixels of the same color contained in multiple pixels" means pixels of a single color that contain the design layer 31.

[0120] Furthermore, the array pitch PT of the multiple transparent parts 26 is preferably 5 μm or more smaller or 5 μm or more larger than the array pitch PP1, PP2 of pixels of the same color included in the multiple pixels 51, 52, 53, and more preferably 5 μm or more smaller or 5 μm or more larger than the array pitch PP1, PP2 of any of the pixels of any color included in the multiple pixels 51, 52, 53. In other words, the difference between the array pitch PT of the multiple transparent parts 26 and the array pitch PP1, PP2 of pixels of the same color included in the multiple pixels 51, 52, 53 is preferably 5 μm or more. Moreover, the difference between the array pitch PT of the multiple transparent parts 26 and the array pitch PP1, PP2 of pixels of the same color included in the multiple pixels 51, 52, 53 is more preferably 20 μm or more, and even more preferably 50 μm or more. According to this specific example, the striped pattern caused by moiré due to the superposition of the array of transparent parts 26 and the array of pixels can be effectively made less noticeable. Furthermore, this specific example makes it easier for each pixel to overlap with one of the transparent areas 26, and for the image light emitted by each pixel to pass through one of the transparent areas 26 and form an image. In other words, it is possible to effectively suppress the occurrence of pixels that are completely covered by the pattern area 24.

[0121] Furthermore, as explained with reference to Figure 13, the first longitudinal edge 27 and the second longitudinal edge 28 of the transparent portion 26 may not extend parallel to the longitudinal LDT. In such cases, the spacing length D1Y along the longitudinal LDT of two adjacent inward protrusions 27B of the first longitudinal edge 27 is preferably smaller than the array pitch of pixels of the same color included in the plurality of pixels 51, 52, 53, and more preferably smaller than half the array pitch of pixels of the same color. More preferably, the spacing length D1Y is smaller than the array pitch of any of the pixels of any color included in the plurality of pixels 51, 52, 53, and more preferably smaller than half the array pitch of any of the pixels of any color. Similarly, the spacing length D2Y along the longitudinal LDT of two adjacent inward protrusions 28B in the longitudinal LDT of the second longitudinal edge 28 is preferably smaller than the array pitch of any of the pixels of the same color included in the plurality of pixels 51, 52, 53, and more preferably smaller than half the array pitch of any of the pixels of the same color. Furthermore, the spacing length D2Y is smaller than the array pitch of any of the pixels of the same color included in the plurality of pixels 51, 52, 53, and more preferably smaller than half the array pitch of any of the pixels of the same color.

[0122] In this example, it is possible to prevent the meandering period of the first longitudinal edge 27 from becoming too long relative to the array pitches PP1 and PP2 of pixels 51, 52, and 53, and also to prevent the meandering period of the second longitudinal edge 28 from becoming too long. Unlike this example, if the inner protrusion 27B of the first longitudinal edge 27 and the inner protrusion 28B of the second longitudinal edge 28 extend long in the longitudinal LDT direction, the area in which pixels 51, 52, and 53 overlap with the transparent portion 26 and are exposed becomes narrower in the region where these inner protrusions 27B and 28B are provided. In other words, by setting the aforementioned separation lengths D1Y and D2Y to be short, the area in which the width of the transparent portion 26 is narrowed can be made less noticeable, and a noticeable reduction in the area of ​​pixels 51, 52, and 53 that overlap with the transparent portion 26 can be effectively avoided. As a result, the transparent portion 26 can be effectively made less visible, and at the same time, a clear and sharp image can be displayed by the display device 10.

[0123] Furthermore, the spacing lengths D1Y and D2Y can be adjusted, for example, by controlling the irradiation conditions of the laser light used to form the transparent portion 26 in the manufacturing method described above, or more specifically, the irradiation conditions when pulsed laser light is irradiated.

[0124] Furthermore, the decorative sheet 20 may include the light-shielding sheet 14 described above. In this case, the light-shielding sheet 14 is positioned on the opposite side from the observer with respect to the pattern portion 24 of the decorative sheet 20. The decorative sheet 20 including the light-shielding sheet 14 can constitute the decorative sheet display device 1 on its own, or it can constitute the decorative sheet display device 1 in combination with the surface light source device 12. Furthermore, the transparent portion 26 of the decorative sheet 20 may be provided only inside the outer contour of the image to be displayed. Such a decorative sheet 20 can constitute the decorative sheet display device 1 on its own without using the light-shielding sheet 14, or it can constitute the decorative sheet display device 1 in combination with the surface light source device 12.

[0125] In addition, while several modifications of the above-described embodiments have been explained, it is naturally possible to combine and apply multiple modifications as appropriate. [Explanation of Symbols]

[0126] DS1 1st reference direction DS2 2nd reference direction ND Normal Direction L-dot Longitudinal L ADT Array Direction A AD1 First halftone dot arrangement direction AD2 Second halftone dot arrangement direction AD3 Third halftone dot arrangement direction AD4 Fourth halftone dot arrangement direction AD5 Fifth halftone dot arrangement direction AD6 Sixth halftone dot arrangement direction ADP1 First Pixel Alignment Direction ADP2 2nd Pixel Alignment Direction LLD Long Direction RA Winding axis CL cutting line PT array pitch WT width P1 First halftone dot array pitch P2 Second halftone dot array pitch P3 Third halftone array pitch P4 4th halftone array pitch P5 5th halftone dot array pitch P6 6th halftone dot arrangement pitch PP1 First pixel array pitch PP2 2nd pixel array pitch 1. Display device with decorative sheet 10 Display device 11 Display surface 11a Surrounding area 12 surface light source device 13. Light-emitting surface 14. Light-blocking sheet 14a Opening area 14b Shading area 15 Panel members 15a Transparent area 16 Display Panel 17 Winding body 18 Sheet-like member 18a Longitudinal edge 19 Winding core 20 decorative sheets 20a First edge 20b 2nd edge 20c 3rd edge 20d Fourth edge 22 Base material part 24. Design section 26 Transparent part 27 First longitudinal direction edge 27V Virtual first longitudinal edge 27A,27AX Outside convex part 27B, 27BX Inner protrusion 28 Second longitudinal edge 28V Virtual second longitudinal edge 28A,28AX Outside convex part 28B, 28BX Inner protrusion 31 Design Layer 31A Design film 32 Light blocking layer 32A Light shielding film 33 Cover Layer 35 Laminate 41 First halftone dot 42 Second halftone dot 43 Third halftone dot 51 Pixel 1 52 2nd pixel 53 Third pixel 100 Laser irradiation devices

Claims

[Claim 1] A patterned portion having a design layer, A decorative sheet comprising a plurality of transparent portions which are non-formed portions of the pattern portion, The transparent portion extends linearly in a direction inclined with respect to the edge of the decorative sheet, The pattern portion is a decorative sheet containing a plurality of halftone dots arranged along the edge.

Images