Items equipped with an operation display panel

Abstract

Provided is an article assembled with an operation display panel that can further improve visibility when illuminated. The article is a display panel with a touch sensor that includes a transparent conductive sheet and a light-emitting element array substrate having at least a two-dimensional array of light-emitting elements, and an article assembled with an operation display panel that includes a thin layer covering the entire front surface or a portion of the display panel. A transparent substrate that forms a light guide in the direction of the optical axis of the light-emitting elements is provided between the transparent conductive sheet and the thin layer, or between the transparent conductive sheet and the light-emitting element array substrate. In the transparent substrate, micropores are provided on a resin substrate made of a transparent resin. The micropores are formed by lattice-shaped louvers. Preferably, the gaps between the lattice-shaped louvers form a light guide along the optical axis of the light-emitting elements arranged on the light-emitting element array substrate. Alternatively, the micropores may be filled with a light-transmitting material having a refractive index different from that of the resin substrate, or at least two louver films may be stacked so that the louvers are orthogonal to each other.

Description

Technical Field

[0001] The present invention relates to a controller for a household appliance, a display for an electronic device, or an operation display device mounted on a mobile object such as a car. Background Art

[0002] Information and communications technology has experienced remarkable development in recent years. While personal computers used to be confined to the confines of homes and offices, the widespread use of smartphones and tablets has made it possible for anyone to access the internet at any time, enabling them to lead convenient lives. Furthermore, from the perspective of the IoT (Internet of Things), new products that utilize the internet are being developed, while previously home appliances were not connected to the internet. As such, the internet and its products have become an integral part of people's lives, installed in various locations, carried around, and used by many people.

[0003] However, although we can enjoy a convenient life with all these devices around us, on the other hand, living surrounded by electronic devices also makes many people feel stressed.

[0004] For example, a hotel that values the warmth of natural wood provides guests with a high-quality space where they can unwind and unwind. However, if such guest rooms are filled with numerous inorganic electronic devices, displays, and controllers, it becomes difficult to fully unwind and unwind.

[0005] Here, an article incorporating an operation display panel is known, wherein a thin layer made of wood or the like covers the entire front surface of a display panel with a touch sensor assembled on the outer peripheral surface of a frame, and is arranged on the outer peripheral surface of the frame (see Patent Document 1). This is designed so that the thickness of the thin layer and the brightness of the panel can visually identify the content displayed on the panel. According to this technology, even an article incorporating an operation display panel can naturally coordinate with the space and will not become visual noise for the user. When the user wants to use or needs to use it, they can feel the natural feel of the material while intuitively operating it.

[0006] Furthermore, in the article incorporating an operation display panel disclosed in Patent Document 1, a light guide is provided between the transparent conductive sheet and the light-emitting element array to guide the light emitted by the light-emitting elements, in order to improve visibility during display. The light guide refers to an opaque, dark-colored substrate laminated on the substrate of the light-emitting element array, surrounding the entire light-emitting element array and having through-holes provided along the optical axis of each light-emitting element. Thus, by providing through-holes along the optical axis of each light-emitting element, visibility during illumination can be improved.

[0007] However, in a structure in which a thin layer is provided in front of a display panel, there is still a need to further improve visibility during light emission.

[0008] [Patent Document 1] Japanese Patent No. 6370519 Summary of the Invention

[0009] Technical problem to be solved by the invention

[0010] In view of such circumstances, an object of the present invention is to provide an article incorporating an operation display panel, which can further improve visibility when emitting light.

[0011] Solutions to the Problem

[0012] In order to solve the above-mentioned problems, the article assembled with an operation display panel of the present invention is a display panel with a touch sensor including a transparent conductive sheet, a light-emitting element array substrate having at least a two-dimensional arrangement of light-emitting elements, and a thin layer covering the entire front surface or a portion of the display panel. A transparent substrate forming a light-guiding path in the optical axis direction of the light-emitting element is provided between the transparent conductive sheet and the thin layer, or between the transparent conductive sheet and the light-emitting element array substrate.

[0013] By providing a transparent substrate that forms a light guide along the optical axis of the light-emitting element, light from the light-emitting element can be efficiently propagated in a straight line. This reduces light loss, increases the amount of light displayed in thin layers, and improves display performance. Furthermore, benefits such as reduced cost and miniaturization of light-emitting element components can be achieved, reducing power consumption and suppressing heat generation. Furthermore, miniaturization of light-emitting element components contributes to higher pixel density.

[0014] Furthermore, unlike conventional light guides, since alignment of the light emitting element and the transparent substrate is not required, the manufacturing cost can be reduced.

[0015] In the article assembled with the operation display panel of the present invention, the transparent substrate is provided with micropores on a resin substrate composed of a transparent resin, and the micropores are formed by lattice-shaped louvers, and the gaps between the lattice-shaped louvers are suitable for use as a light guide along the optical axis of the light-emitting elements arranged on the light-emitting element array substrate. In addition, the transparent substrate can also be a resin substrate composed of a transparent resin with micropores, and the micropores can be filled with a light-transmitting material having a refractive index different from that of the resin substrate. In the resin substrate composed of a transparent resin, a material with micropores formed by lattice-shaped louvers is provided, or a transparent substrate filled in the micropores provided on the resin substrate, preferably a well-known privacy filter is used. The privacy filter is a sheet filter obtained by laminating a film having a fine louver structure with a PET (polyethylene terephthalate) film, for example. The privacy filter allows light to travel straight to increase the amount of light, and scatters the straight light when it passes through the thin layer due to the material properties of the thin layer, so that the display on the surface of the thin layer is clear and the viewing angle is also increased.

[0016] In this specification, the shape of the micropores is not particularly limited, and the micropores may be not only circular in plan view but also polygonal in plan view, such as hexagonal.

[0017] In the article assembled with the operation display panel of the present invention, the micropores are formed by lattice-shaped louvers, and the gaps between the lattice-shaped louvers become light-guiding paths along the optical axes of the light-emitting elements arranged on the light-emitting element array substrate, so that the light from the light-emitting elements can effectively go straight, thereby improving the display performance.

[0018] In the article incorporating an operation display panel of the present invention, the transparent substrate may be formed by laminating at least two sheets of louver films such that the louvers are orthogonal to each other. By laminating multiple sheets of louver films, light from the light-emitting element can be effectively and cost-effectively directed, even without the use of lattice-shaped louvers, thereby improving display performance.

[0019] In the article incorporating an operation display panel of the present invention, the transparent substrate may be composed of an aggregate of fine fibers. A transparent substrate composed of an aggregate of fine fibers can effectively direct light from the light-emitting element, thereby improving display performance.

[0020] In the article incorporating an operation display panel of the present invention, fine fibers such as optical fibers and ulexite can be widely used, but glass or plastic optical fibers are preferred. While light is absorbed within the micropores described above, the amount of light reaching the surface is reduced. However, fine fibers such as optical fibers have the advantage of suppressing light absorption due to total reflection, thereby increasing the amount of light reaching the surface.

[0021] In the article assembled with the operation display panel of the present invention, the display panel with a touch sensor can be provided with a light guide between the transparent conductive sheet and the light emitting element array substrate, which can guide the emission direction of the light of the light emitting element. By providing a light guide between the transparent conductive sheet and the light emitting element array substrate, the effect of making the light of the light emitting element go straight can be further improved. In addition, the shape of the pixel displayed in front of the display panel can be changed according to the shape of the light emitting element, or the luminous brightness within the pixel can be made uniform. For example, even if the light emitting element is rectangular in a plan view, a circular pixel can be displayed by using a circular light guide. In addition, even if the light is emitted strongly at the center of the light emitting element, the luminous brightness within the pixel becomes uniform because the light is diffused and reflected by propagating in the light guide. In addition, by tilting the hole of the light guide, the display position of the pixel in front of the display panel can be changed to some extent.

[0022] Here, when the transparent substrate is disposed between the transparent conductive sheet and the light emitting element array substrate, the positional relationship between the transparent substrate and the light guide can be such that the transparent substrate is disposed above the light guide or below the light guide.

[0023] In the article with an operation display panel incorporated therein of the present invention, the transparent substrate may be formed of a flexible resin. Since the transparent substrate is formed of a flexible resin, articles with an operation display panel incorporated therein can be manufactured in various shapes.

[0024] In the article assembled with the operation display panel of the present invention, the transparent substrate preferably has a visible light transmittance of 20% or more. The visible light transmittance is measured according to the test method for the transmittance of all light specified in JIS K 7361-1. The transmittance of a conventional privacy filter is 70 to 80, and a transparent substrate in which two privacy filters are bonded together can also be used. By increasing the visible light transmittance of the transparent substrate to 30% or 40%, the amount of light transmitted through the thin layer can be increased, and a bright display can be achieved. In addition, if the visible light transmittance of the transparent substrate is less than 20%, the amount of light transmitted through the thin layer is even lower, making it difficult to display clearly.

[0025] In the article assembled with the operation display panel of the present invention, the thin layer is preferably made of natural wood, natural fiber, natural leather or natural stone, or a material that imitates the appearance and touch of nature, such as resin, synthetic fiber, synthetic leather or artificial stone.

[0026] A natural touch feeling can be obtained by using materials derived from nature or materials formed by imitating the appearance and touch of nature. Therefore, as long as a natural appearance and touch can be achieved, a polymer material such as resin can be used as the material of the thin layer. Since resin is easy to shape, it has the advantage of being able to produce thin layers with complex three-dimensional shapes. Here, polymer material refers to a material with a large molecular weight, which is a polymer obtained by polymerizing monomers, or a compound with a large molecular weight such as a natural polymer. In addition, when using a resin in an electrostatic capacitive touch panel, it is preferably an insulating resin with a high relative dielectric constant.

[0027] A transparent substrate that forms a light guide along the optical axis of the light-emitting element is highly effective at directly transmitting light to the display surface, but the transparent substrate itself is less effective at diffusing light. On the other hand, for example, natural wood used as the thin layer has a high light diffusion effect. Therefore, by combining a transparent substrate such as a privacy filter with wood, the privacy filter mechanism can increase the amount of light reaching the thin layer made of wood, thereby achieving a wide viewing angle on the display surface.

[0028] Effects of the Invention

[0029] According to the article incorporating the operation display panel of the present invention, there is an effect of further improving visibility during light emission. BRIEF DESCRIPTION OF THE DRAWINGS

[0030]

Figure 1

[0031]

Figure 2

[0032]

Figure 3

[0033]

Figure 4

[0034]

Figure 5

[0035]

Figure 6

[0036] Next, an example of an embodiment of the present invention will be described with reference to the accompanying drawings. The scope of the present invention is not limited to the following embodiments or the illustrated examples, and other changes and modifications are possible.

[0037] First, when explaining the embodiment of the present invention, the basic structure of an article incorporating an operation display panel based on the conventional technology will be described.

[0038] Figure 5 The figure shows a schematic diagram of the structure of an article assembled with an operation display panel in the prior art. Figure 5 As shown, an article 105 incorporating an operation display panel comprises a single plate 2, a transparent substrate 3, a touch panel 4 (a transparent conductive film), a light guide 5, and an LED array 6 (an array of light-emitting elements), stacked sequentially from the top. The single plate 2, made of sycamore, is located on the outer surface of the article 105 incorporating the operation display panel, while the LED array 6 is located within the article. Within the LED array 6, a plurality of LED light sources 7 are arranged in a two-dimensional pattern. The light guide 5 directs light from the LED light sources 7 perpendicularly to the substrate of the LED array 6 and is provided with the same number of light guide holes 5a as the number of LED light sources 7.

[0039] exist Figure 5 In the figure, for the sake of convenience, not all LED light sources are shown. For example, the LED array 6 is composed of 32 LED light sources in the vertical direction and 200 LED light sources in the horizontal direction, totaling 6,400. One LED light source is composed of a flat-mounted LED. A point light source can be realized by the light of one LED light source, and when this is regarded as a point, an 8×8 dot matrix or a 16×16 dot matrix can be used to represent a word or graphic. For example, in the case of an LED array 6 with 6,400 LED light sources, a sentence of 22 characters × 3 lines can be expressed. Here, the LED light source, for example, can be used with a size of 2 mm × 2 mm and a brightness of 700 to 1000 mcd (millicandela).

[0040] The light guide 5 is a dark-colored substrate, allowing text or graphics formed by light emitted from the LED light sources 7 to pass through the single board 2, making them clearly visible. Specifically, when the light guide 5 is stacked on the LED array 6, multiple guide holes 5a are provided to position guide holes 5a directly above each LED light source 7, depending on the arrangement of the LED light sources 7.

[0041] Next, refer to Figure 6 The structure of an article equipped with an operation display panel in the prior art will be described.

[0042] Figure 6 The figure shows a cross-sectional view of an article assembled with an operation display panel in the prior art. Figure 6As shown, in article 105 incorporating an operation display panel, a single plate 2, a transparent substrate 3, a touch panel 4, a light guide 5, and an LED array 6 are bonded together in a stacked state from the top via a frame 8. Of the light emitted from LED light sources 7 provided on LED array 6, light rays (90b, 90c) emitted from the inclined surfaces are blocked by light guide 5, and thus reach the protruding single plate 2 in a straight line, similar to light 90a. Frame 8 is primarily formed of ABS resin.

[0043] There is no gap between the single plate 2 and the transparent substrate 3, or between the transparent substrate 3 and the touch panel 4; they are bonded together. In contrast, a gap G1 exists between the touch panel 4 and the light guide 5. This is because the light guide 5 has light guide holes 5a. Therefore, when the touch panel 4 and light guide 5 are bonded together, uneven pressure can cause malfunctions when operating the panel.

[0044] Furthermore, a gap G2 is provided between the light guide 5 and the LED light source 7. Because the number of LED light sources 7 arranged on the LED array 6 or the light guide holes 5a provided in the light guide 5 can reach thousands, there is a risk of errors in their placement when the light guide 5 and LED array 6 are stacked. If these errors occur, if the light guide 5 and LED array 6 are attached together, light emitted from the LED light source 7 will not be able to pass through the light guide holes 5a, resulting in an inaccurate display. Therefore, providing gap G2 prevents degradation of display quality caused by errors in the placement of the LED light sources 7 and light guide holes 5a. Furthermore, even with these errors, display quality is maintained, making manufacturing easier.

[0045] Next, the article incorporating the operation display panel of the present invention will be described. In the following embodiments, for ease of description, only the stacked structure of the components is shown, and the frame 8 is not shown.

[0046] [Example 1]

[0047] Figure 1 The figure shows a cross-sectional view of an article assembled with an operation display panel as described in Example 1. Figure 1As shown, in the article 101 incorporating an operation display panel, unlike the article 105 incorporating an operation display panel in the prior art, a transparent substrate 30 is provided in place of the transparent substrate 3. A plurality of micropores serving as guide holes 30a are formed on the main body of the transparent substrate 30, which is made of a transparent resin. Although not shown in the figure, the guide holes 30a are formed by lattice-shaped louvers, and the gaps between the lattice-shaped louvers serve as a light guide path along the optical axis of the LED light source 7. Alternatively, by filling the guide holes 30a with a translucent material having a different refractive index from that of the main body of the transparent substrate 30, the guide holes 30a serve as a light guide path for the outgoing light from the LED light source 7. That is, the light 9a emitted from the LED light source 7 directly passes through the guide holes 30a as the light 9b, so that the outgoing light from the LED light source 7 can effectively travel straight. This reduces light loss, increases the amount of light during thin-layer display, and improves display performance. In addition, by adopting a structure without providing the light guide 5, costs can be reduced and thinness can be achieved.

[0048] [Example 2]

[0049] Figure 2 The figure shows a cross-sectional view of an article assembled with an operation display panel as described in Example 2. Figure 2 As shown, in an article 102 incorporating an operation display panel, a transparent substrate 30 is provided in place of the transparent substrate 3, similar to the article incorporating an operation display panel described in Example 1. A plurality of micropores serving as guide holes 30a are formed in the main body of the transparent substrate 30, which is composed of a transparent resin. Although not shown in the figure, the guide holes 30a are formed by a lattice-like louver, with the gaps between the lattice-like louvers forming a light guide path along the optical axis of the LED light source 7. Alternatively, by filling the guide holes 30a with a light-transmitting material having a different refractive index than that of the main body of the transparent substrate 30, the guide holes 30a serve as a light guide path for the light emitted from the LED light source 7.

[0050] However, unlike article 101, article 102 incorporating an operation display panel incorporates a light guide 5. Therefore, guide hole 30a serves as a light guide path for light passing through light guide 5. In other words, light 9a emitted from LED light source 7 passes through guide hole 5a of light guide 5 and then through guide hole 30a as light 9c, effectively allowing light to travel straight through light guide 5. This reduces light loss, increases the amount of light during thin-film displays, and improves display performance. Furthermore, it reduces the cost and miniaturization of the light-emitting element assembly, while suppressing power consumption and heat generation.

[0051] [Example 3]

[0052] Figure 3 This is an illustration of an article assembled with an operation display panel according to Example 3, (1) is a cross-sectional schematic diagram, and (2) is a display effect diagram. Figure 3As shown in (1), unlike the prior art, in the article 103 assembled with the operation display panel, a transparent substrate 31 is provided instead of the light guide 5. A plurality of micropores are formed as guide holes 31a on the main body of the transparent substrate 31 made of a transparent resin. Although not shown in the figure, the guide hole 31a is formed by a lattice-shaped louver, and the gaps between the lattice-shaped louvers become a light guide path along the optical axis of the LED light source 7. Alternatively, by filling the guide hole 31a with a light-transmitting material having a different refractive index from that of the main body of the transparent substrate 31, the guide hole 31a becomes a light guide path for the outgoing light of the LED light source 7. Although Figure 3 The transparent substrate 31 shown in (1) is Figure 1 The transparent substrate 30 shown in FIG2 is thicker, but there is no particular limitation on the thickness of the transparent substrate. In other words, the transparent substrate can have a variety of thicknesses depending on the needs. For example, to increase the rigidity of the transparent substrate 30, a thicker structure may be used. To achieve a thinner device, a thinner transparent substrate 31 may also be used.

[0053] The guide hole 31a becomes a light-guiding path along the optical axis of the LED light source 7 arranged in the LED array 6, thereby effectively allowing the light 9a emitted from the LED light source 7 to go straight. The light that directly enters the guide hole 31a becomes light 9d and reaches the display surface. As a result, it is possible to reduce light loss, increase the amount of light displayed on the single board 2, and improve display performance. In addition, since the light 9d diffuses in the single board 2, the viewing angle becomes wider. Therefore, a structure that increases the amount of light while obtaining a wide viewing angle can be adopted to improve visibility when emitting light. In addition, as mentioned above, because the single board 2 uses a sycamore material, a vivid display can be achieved, and the display can feel the warm and soft appearance of the natural material.

[0054] Figure 3 The display example 203 on the upper part of the screen shown in (2) is a screen display image of the article 103 with the operation display panel assembled therein of Example 3, and the display example 205a on the lower part of the screen is a screen display image when the transparent substrate 31 is removed from the article 103 with the operation display panel assembled therein. In addition, the left side of the display examples (203, 205a) shows the state when the single plate 2, the transparent substrate 3, and the touch panel 4 are removed. Figure 3 As shown in (2), in a state where the single plate 2, the transparent substrate 3 and the touch panel 4 are removed, the display of "0" and "1" in the display example 203 with the transparent substrate 31 and the display of "2" and "3" in the display example 205a without the transparent substrate 31 are all displayed clearly.

[0055] However, in the state where the single board 2, transparent substrate 3, and touch panel 4 are installed, in display example 205a, where the transparent substrate 31 is not provided, the display of "24" and "26" exhibits color bleeding, making the display somewhat unclear. On the other hand, in display example 203, where the transparent substrate 31 is provided, the display of "26" at the upper right and the display of "26" at the lower right are both clearly displayed with less color bleeding.

[0056] As described above, when the single board 2, transparent substrate 3 and touch panel 4 are removed, the display is clear regardless of whether the transparent substrate 31 is set or not, but when the single board 2, transparent substrate 3 and touch panel 4 are installed, it can be confirmed that the transparent substrate 31 has the effect of reducing color bleeding, and the compatibility of the combination of the single board 2 and the transparent substrate 31 is very good.

[0057] Furthermore, the structure of this embodiment can achieve the effects of reducing the cost and miniaturization of light-emitting element components, suppressing power consumption and heat generation, etc. Furthermore, miniaturization of light-emitting element components contributes to higher pixel density.

[0058] [Example 4]

[0059] Figure 4 1 is an explanatory diagram of an article assembled with an operation display panel according to Example 4, (1) is a cross-sectional schematic diagram, and (2) is a display effect diagram. Figure 4 As shown in (1), in the article 104 in which the operation display panel is assembled, unlike in Example 3, a lens array 11 is provided between the touch panel 4 and the transparent substrate 31. The lens array 11 is a lens array in which lenses 11a are arranged in a two-dimensional manner on a base 11b. As the lens 11a, a lens having a focusing property can be widely used, for example, a Fresnel lens can be used. In addition, for example, the shape of the lens array 11 is not a simple focusing lens, but a fly-eye lens or an aspherical lens is used, for example, light emitted from a rectangular light-emitting element can be displayed in a circular shape in front of the display panel, or light emitted from a light-emitting element of a circular or point light source can also be displayed in a square shape on the front surface of the display panel.

[0060] like Figure 4 As shown in (1), light 9a emitted from LED light source 7 can effectively travel straight through guide holes 31a formed in transparent substrate 31. The light reaching lens array 11 becomes light 9e with a small radiation angle. By using both transparent substrate 31 and lens array 11, light loss can be reduced, the amount of light displayed on single board 2 can be increased, and display performance can be further improved. Figure 4(2) Display example 204 is a display image in which the 16×16 dot matrix area in the upper left corner of the screen is the structure of the object 104 equipped with the operation display panel of Example 4. Display example 205b in the lower left corner of the screen is a display image in which the lens array 11 is removed from the object 104 equipped with the operation display panel. Figure 4 As shown in (2), in display example 205b, the display of "24" and "27" both suffer from color bleeding and become unclear. In contrast, in display example 204, both the upper "28" and the lower "28" have less color bleeding and the pixels can be clearly identified.

[0061] Industrial Applicability

[0062] The present invention is useful as an operation display device mounted on a controller of a home appliance, a display of an electronic device, a mobile object such as an automobile, or an operation display device installed on a structure such as the interior or exterior of a house or building.

[0063] Explanation of symbols in the figure

[0064] 2 boards

[0065] 3, 30, 31 Transparent substrate

[0066] 4 Touch Panel

[0067] 5 Light guide

[0068] 5a, 30a, 31a light guide holes

[0069] 6 LED array

[0070] 7 LED light source

[0071] 8 Frame

[0072] 9a~9e,90a~90c light

[0073] 11 Lens Array

[0074] 11a lens

[0075] 11b base

[0076] 101~105 Items equipped with an operation display panel

[0077] 203, 204, 205a, 205b Display example

[0078] G Gap

Claims

1. An article assembled with an operation display panel, characterized in that: The present invention relates to a display panel with a touch sensor, comprising a transparent conductive sheet, a light-emitting element array substrate having at least a two-dimensional arrangement of light-emitting elements, and an article assembled with an operation display panel, comprising a thin layer covering the entire front surface of the display panel. The thin layer is made of natural wood, natural fiber, natural leather or natural stone, or resin, synthetic fiber, synthetic leather or artificial stone that imitates the appearance and touch of nature. A transparent substrate is provided between the transparent conductive sheet and the thin layer, or between the transparent conductive sheet and the light emitting element array substrate, for forming a light guide path in the optical axis direction of the light emitting element. The transparent substrate is provided with micropores on a resin substrate composed of a transparent resin. The micropores are formed by lattice-shaped louvers. The gaps between the lattice-shaped louvers serve as light guide paths along the optical axes of the light-emitting elements arranged on the light-emitting element array substrate. The amount of light reaching the thin layer is increased by the transparent substrate, and the diffusion caused by the material properties of the thin layer widens the viewing angle of the display surface, thereby improving the visibility of the display panel when it is illuminated.

2. An article assembled with an operation display panel, characterized in that: The present invention relates to a display panel with a touch sensor, comprising a transparent conductive sheet, a light-emitting element array substrate having at least a two-dimensional arrangement of light-emitting elements, and an article assembled with an operation display panel, comprising a thin layer covering the entire front surface of the display panel. The thin layer is made of natural wood, natural fiber, natural leather or natural stone, or resin, synthetic fiber, synthetic leather or artificial stone that imitates the appearance and touch of nature. A transparent substrate is provided between the transparent conductive sheet and the thin layer, or between the transparent conductive sheet and the light emitting element array substrate, for forming a light guide path in the optical axis direction of the light emitting element. The transparent substrate is provided with micropores on a resin substrate composed of a transparent resin, and the micropores are filled with a light-transmitting material having a refractive index different from that of the resin substrate. The amount of light reaching the thin layer is increased by the transparent substrate, and the diffusion caused by the material properties of the thin layer widens the viewing angle of the display surface, thereby improving the visibility of the display panel when it is illuminated.

3. An article assembled with an operation display panel, characterized in that: The present invention relates to a display panel with a touch sensor, comprising a transparent conductive sheet, a light-emitting element array substrate having at least a two-dimensional arrangement of light-emitting elements, and an article assembled with an operation display panel, comprising a thin layer covering the entire front surface of the display panel. The thin layer is made of natural wood, natural fiber, natural leather or natural stone, or resin, synthetic fiber, synthetic leather or artificial stone that imitates the appearance and touch of nature. A transparent substrate is provided between the transparent conductive sheet and the thin layer, or between the transparent conductive sheet and the light emitting element array substrate, for forming a light guide path in the optical axis direction of the light emitting element. The transparent substrate is formed by stacking at least two sheets of louver films so that the louvers are orthogonal to each other. The amount of light reaching the thin layer is increased by the transparent substrate, and the diffusion generated based on the material properties of the thin layer expands the viewing angle of the display surface, thereby improving the visibility of the display panel when it is illuminated.

4. An article assembled with an operation display panel, characterized in that: The present invention relates to a display panel with a touch sensor, comprising a transparent conductive sheet, a light-emitting element array substrate having at least a two-dimensional arrangement of light-emitting elements, and an article assembled with an operation display panel, comprising a thin layer covering the entire front surface of the display panel. The thin layer is made of natural wood, natural fiber, natural leather or natural stone, or resin, synthetic fiber, synthetic leather or artificial stone that imitates the appearance and touch of nature. A transparent substrate is provided between the transparent conductive sheet and the thin layer, or between the transparent conductive sheet and the light emitting element array substrate, for forming a light guide path in the optical axis direction of the light emitting element. The transparent substrate is composed of an aggregate of fine fibers. The amount of light reaching the thin layer is increased by the transparent substrate, and the diffusion caused by the material properties of the thin layer widens the viewing angle of the display surface, thereby improving the visibility of the display panel when it is illuminated.

5. The article with an operation display panel assembled therein according to claim 4, wherein: The microfiber is an optical fiber made of glass or plastic.

6. The article incorporating an operation display panel according to any one of claims 1 to 4, characterized in that: The display panel with a touch sensor is further provided with a light guide between the transparent conductive sheet and the light emitting element array substrate, which can guide the emission direction of light from the light emitting element.

7. The article incorporating an operation display panel according to any one of claims 1 or 2, characterized in that: The transparent substrate is formed of a flexible resin.

8. The article incorporating an operation display panel according to any one of claims 1 to 4, characterized in that: The transparent substrate has a visible light transmittance of more than 20%.

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