Indication device

The display device addresses the issue of appearance differences by using uniform openings and light-shielding layers to ensure consistent reflectivity and brightness across display and non-display areas, improving the quality of the device.

JP2026106532APending Publication Date: 2026-06-30SAMSUNG ELECTRONICS CO LTD

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
SAMSUNG ELECTRONICS CO LTD
Filing Date
2024-12-18
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Display devices with reflective layers and light-emitting elements exhibit differences in appearance between display and non-display areas due to the presence or absence of openings, leading to quality degradation.

Method used

A display device design featuring a reflective substrate with uniform openings and light-shielding layers to match the reflectivity of display and non-display areas, along with a configuration that includes dummy openings and light-emitting elements to maintain consistent appearance.

Benefits of technology

The design suppresses the difference in appearance between display and non-display areas, enhancing the overall quality and brightness of the display device by maintaining consistent reflectivity and preventing light leakage.

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Abstract

To provide a display device that can suppress the difference in appearance between the display area and the non-display area. [Solution] The display device of the present invention comprises a display substrate 110 on which a plurality of light-emitting elements 112 are arranged regularly, a display area R1 positioned opposite the display substrate 110 and having openings 122HR that allow light emitted from each light-emitting element 112 to pass through at positions corresponding to the plurality of light-emitting elements 112, and a non-display area R2 which is a different area from the display area R1 and has dummy openings 122HD.
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Description

Technical Field

[0001] The present invention relates to a display device.

Background Art

[0002] A display device such as a mirror display or a decorative display displays an image by emitting light emitted from a plurality of light-emitting elements forward through a plurality of openings provided in an aperture substrate.

[0003] For example, a mirror display has a display substrate on which a plurality of light-emitting elements are arranged and a transparent substrate on which a reflective layer is formed. At each position of the reflective layer corresponding to the plurality of light-emitting elements, an opening for allowing the light emitted from the light-emitting elements to pass through is provided (see Patent Document 1). According to such a configuration, a display function of emitting light to display an image and a mirror function of reflecting light to reflect surrounding objects are realized.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the reflective layer of the mirror display, openings are provided only at positions corresponding to the light-emitting elements, and an image is displayed in the area where the openings are provided. Therefore, in the reflective layer of the mirror display, the reflectance of the display area where an image is displayed and the non-display area around the display area where no image is displayed is different depending on the presence or absence of the openings. As a result, for example, when a user views the mirror display from the front, there is a difference in the appearance between the display area and the non-display area, which causes a problem of quality degradation.

[0006] Furthermore, the issue of differences in appearance due to the presence or absence of openings exists not only in mirror displays but also in decorative displays that have a similar configuration to mirror displays.

[0007] The present invention has been made in view of the above-mentioned problems. Accordingly, the object of the present invention is to provide a display device that can suppress the difference in appearance between a display area and a non-display area in a display device that displays an image by emitting light emitted from a plurality of light-emitting elements forward through a plurality of openings provided in an aperture substrate. [Means for solving the problem]

[0008] The above objectives of the present invention are achieved by the following means.

[0009] (1) A display device comprising: a display substrate on which a plurality of light-emitting elements are arranged in a regular pattern; a display region positioned opposite the display substrate and having openings at positions corresponding to the plurality of light-emitting elements that allow light emitted from each light-emitting element to pass through; and a non-display region different from the display region and having dummy openings.

[0010] (2) The display device according to (1) above, wherein the aperture substrate includes a transparent substrate and a reflective layer formed on the transparent substrate and having a plurality of openings.

[0011] (3) The display device according to (1) or (2) above, wherein the aperture substrate is larger than the display substrate, the non-overlapping region of the aperture substrate that does not overlap with the display substrate is provided with the dummy opening, and the aperture substrate further has a light-shielding layer for the opening provided on the display substrate side of the non-overlapping region.

[0012] (4) The display device according to (3) above, wherein a plurality of display substrates are bonded to one aperture substrate.

[0013] (5) The display device according to (1) or (2) above, further comprising a dummy light-emitting element provided at a position corresponding to the opening of the dummy.

[0014] (6) The display device according to (1) or (2) above, wherein the display board includes a circuit board and a plurality of light-emitting elements arranged on the circuit board.

[0015] (7) The display device according to (6) above, wherein the display substrate further includes a light-shielding layer for light-emitting elements provided in an area other than the area on the circuit board where the light-emitting elements are arranged.

[0016] (8) The light-shielding layer for the light-emitting element covers the side surface of the light-emitting element, as described in (7) above.

[0017] (9) The display device according to (1) or (2) above, further comprising a transparent adhesive layer provided between the display substrate and the aperture substrate, and joining the display substrate and the aperture substrate.

[0018] (10) The display device according to (1) or (2) above, wherein the light-emitting element is a micro LED.

[0019] (11) The display device according to (1) or (2) above, wherein the opening has a size equal to or larger than the size of the light-emitting element.

[0020] (12) The display device according to (1) or (2) above, wherein one opening is provided in the display area of ​​the aperture substrate for one of the light-emitting elements.

[0021] (13) The display device according to (1) or (2) above, wherein one opening is provided in the display area of ​​the aperture substrate for a predetermined number of light-emitting elements.

[0022] (14) The display device according to (1) or (2) above, wherein the plurality of light-emitting elements include a blue light-emitting element, a green light-emitting element, and a red light-emitting element.

[0023] (15) The plurality of light-emitting elements are light-emitting elements that emit light of a specific wavelength, and the display device further includes a color conversion layer that converts the light of the specific wavelength into light of another wavelength and emits it. The display device according to (1) or (2) above.

Advantages of the Invention

[0024] According to the present invention, in a display device that displays an image by emitting light emitted from a plurality of light-emitting elements forward through an opening provided in an aperture substrate, the difference in the appearance between the display area and the non-display area is suppressed.

Brief Description of the Drawings

[0025] [Figure 1] It is a plan view showing a schematic configuration of a display device. [Figure 2] It is a cross-sectional view taken along line II-II' of FIG. 1. [Figure 3A] It is a diagram for explaining a manufacturing method of a display device. [Figure 3B] It is a diagram following FIG. 3A. [Figure 3C] It is a diagram following FIG. 3B. [Figure 3D] It is a diagram following FIG. 3C. [Figure 3E] It is a diagram following FIG. 3D. [Figure 4] It is a diagram for explaining the operation and effect of a display device. [Figure 5] It is a diagram showing a general display device as a comparative example. [Figure 6] It is a cross-sectional view showing a schematic configuration of a display device according to Modification 1. [Figure 7] It is a cross-sectional view showing a schematic configuration of a display device according to Modification 2. [Figure 8] It is a diagram showing a schematic configuration of a display device according to Modification 3. [Figure 9] It is a diagram showing a schematic configuration of a display device according to Modification 4.

Modes for Carrying Out the Invention

[0026] Embodiments of the present invention will be described in detail below with reference to the drawings. In the following drawings, the same reference numerals refer to the same components, and the size of each component in the drawings is exaggerated for clarity and convenience of explanation. On the other hand, the embodiments described below are merely illustrative, and various modifications are possible from such embodiments.

[0027] In the following, "upper part" or "top" may include not only items that are directly above and in contact, but also items that are above but not in contact. Similarly, "lower part" or "bottom" may include not only items that are directly below and in contact, but also items that are below but not in contact.

[0028] A singular expression includes plural expressions unless the context clearly indicates that it is singular. Furthermore, when a part "includes," "companies," or "has" a component, it does not exclude other components, but rather may include other components, unless otherwise specified.

[0029] Unless explicitly stated otherwise, the steps constituting the method shall be performed in the appropriate order. This order is not necessarily limited to the order in which the steps are described. The use of any examples or illustrative terms is solely for the purpose of illustrating a technical idea and is not limited by the scope of the claims.

[0030] The following description will refer to Figures 1 to 5 to explain a display device according to one embodiment of the present invention. In the following description, the present invention will be explained as a mirror display equipped with a display function that emits light to display an image and a mirror function that reflects light to reflect surrounding objects.

[0031] Figure 1 is a plan view showing the schematic configuration of the display device 100 according to this embodiment, and Figure 2 is a cross-sectional view taken along the line II-II' in Figure 1.

[0032] As shown in Figures 1 and 2, the display device 100 of this embodiment has a display substrate 110 on which a plurality of light-emitting elements 112 are arranged regularly, and a reflective substrate 120 on which an opening 122H is provided over its entire surface. The reflective substrate 120 is larger than the display substrate 110, and the display substrate 110 and the reflective substrate 120 are joined to each other via a transparent adhesive layer 130.

[0033] <Display board 110> The display board 110 is constructed by mounting multiple light-emitting elements 112 on a circuit board 111. A light-shielding layer 113 for light-emitting elements is provided in the areas of the circuit board 111 other than the areas where the light-emitting elements 112 are arranged, which absorbs a portion of the light emitted from the light-emitting elements 112.

[0034] The circuit board 111 is a TFT substrate on which thin-film transistors (TFTs) and wiring layers (not shown) for controlling the operation of multiple light-emitting elements 112 are formed.

[0035] The light-emitting element 112 includes a blue light-emitting element 112B that emits blue light, a green light-emitting element 112G that emits green light, and a red light-emitting element 112R that emits red light, and displays a color image. The light-emitting elements 112B, 112G, and 112R are micro-LEDs (Light Emitting Diodes) with a chip size of 100 μm square or less, and three adjacent light-emitting elements 112B, 112G, and 112R constitute one pixel. The three light-emitting elements 112B, 112G, and 112R are arranged adjacent to each other with a spacing smaller than the pixel size and pixel pitch.

[0036] The light-shielding layer 113 for the light-emitting element is made of a black anisotropic conducting film (ACF). The light-shielding layer 113 mechanically and electrically connects the circuit board 111 and the light-emitting element 112, and also absorbs light emitted from the light-emitting element 112. The light-emitting element 112 is provided so as to be embedded in the light-shielding layer 113, and the light-shielding layer 113 covers the sides of the light-emitting element 112.

[0037] <Reflective substrate 120> The reflective substrate 120 is constructed by forming a reflective layer 122 on a transparent substrate 121. The transparent substrate 121 is a transparent glass substrate, and the reflective layer 122 is made of an alloy of aluminum and neodymium. The reflective layer 122 is formed over the entire surface of the transparent substrate 121 and functions as a mirror surface that reflects light from the front of the display device 100 and reflects surrounding objects.

[0038] The reflective substrate 120 has a display area R1 corresponding to the area where the light-emitting elements 112 of the display substrate 110 are arranged, and a non-display area R2 located outside the display area R1. The display area R1 is provided with an opening 122HR at each position corresponding to the multiple light-emitting elements 112, which allows light emitted from each light-emitting element 112 to pass through. The non-display area R2 is provided with a dummy opening 122HD to match the reflectivity of the display area R1 and the non-display area R2. The openings 122HR and 122HD have the same shape and size. The openings 122HR and 122HD are rectangular in shape, and the size of the openings 122HR and 122HD is slightly larger than the chip size of the light-emitting elements 112.

[0039] A light-shielding layer 123 for openings is provided in the non-overlapping region R3 of the reflective substrate 120 that does not overlap with the display substrate 110. The light-shielding layer 123 for openings is bonded to the non-overlapping region R3 of the reflective substrate 120 via a transparent adhesive layer 124. The light-shielding layer 123 for openings prevents the opposite side of the reflective substrate 120 from being visible through a dummy opening 122HD.

[0040] The light-shielding layer 123 for the opening is formed from the same material (a black anisotropic conductive film) as the light-shielding layer 113 for the light-emitting element. However, unlike in this embodiment, the light-shielding layer 123 for the opening may be formed from a different material (for example, a black matrix material) than the light-shielding layer 113 for the light-emitting element. When the light-shielding layer 123 for the opening is formed from a different material than the light-shielding layer 113 for the light-emitting element, a material with a similar color and reflectivity to the material of the light-shielding layer 113 for the opening is used. The transparent adhesive layer 124 may be formed from the same material as the transparent adhesive layer 130.

[0041] <Transparent adhesive layer 130> The transparent adhesive layer 130 is placed between the display substrate 110 and the reflective substrate 120, and bonds the display substrate 110 and the reflective substrate 120 together. The transparent adhesive layer 130 is made of optically clear resin (OCR).

[0042] As described above, the display device 100 of this embodiment is configured such that light emitted from the light-emitting element 112 is emitted forward through an opening 122HR provided in the display area R1 of the reflective substrate 120, thereby realizing a display function that displays a desired image. On the other hand, light incident from the front is reflected by the reflective layer 122 of the reflective substrate 120, thereby realizing a mirror function that reflects surrounding objects.

[0043] More specifically, according to the display device 100 of this embodiment, high-brightness light emitted from the light-emitting element 112 is emitted to the outside through the aperture 122HR, so there is no light attenuation and a display function with high display brightness is realized. On the other hand, by using a small light-emitting element 112, the size of the aperture 122HR is minimized and the area of ​​the reflective layer 122 is maximized, realizing a mirror function with high reflectivity.

[0044] In addition, according to the display device 100 of this embodiment, a light-shielding layer 113 for light-emitting elements is provided that absorbs a portion of the light emitted from the light-emitting elements 112. This prevents a portion of the light emitted from a specific light-emitting element 112 from being emitted forward from other openings 122HR other than the corresponding opening 122HR, thereby improving the quality of the displayed image. The light-shielding layer 113 for light-emitting elements absorbs light emitted from the light-emitting elements 112 that is reflected off the surface of the transparent substrate 121, as well as light emitted from the side of the light-emitting elements 112.

[0045] The area ratio of the apertures 122HR and 122HD on the surface of the reflective substrate 120 is approximately 10%, while the area ratio of the reflective layer 122 is approximately 90%. With this configuration, a mirror performance of 83% or higher reflectivity as defined by the Japanese Industrial Standards (JIS) can be achieved.

[0046] <Method for manufacturing the display device 100> Next, the manufacturing method of the display device 100 will be described with reference to Figures 3A to 3E.

[0047] First, a metal film made of an aluminum-neodymium alloy is formed on a transparent substrate 121. Then, a portion of the metal film is removed using a well-known photolithography process to form a reflective layer 122 with an opening 122H on the transparent substrate 121 (see Figure 3A).

[0048] Subsequently, the reflective substrate 120 is completed by forming a light-shielding layer 123 for the opening via a transparent adhesive layer 124 on the edge of the transparent substrate 121 on which the reflective layer 122 with the opening 122H is formed (see Figure 3B).

[0049] Next, a black anisotropic conductive film is formed on the circuit board 111, and the light-emitting element 112 is embedded in the anisotropic conductive film to complete the display board 110, which includes the light-emitting element 112 and the light-shielding layer 113 for the light-emitting element (see Figure 3C).

[0050] Next, a transparent adhesive layer 130 is applied to the top of the display substrate 110 (see Figure 3D). Then, the reflective substrate 120 is bonded to the transparent adhesive layer 130 on the display substrate 110 so that the reflective layer 122 of the reflective substrate 120 faces the display substrate 110, thereby completing the display device 100 (see Figure 3E).

[0051] The materials used for each component of the display device 100 are not limited to those described above, and various materials can be used. For example, the transparent substrate 121 may be a transparent resin substrate, and the reflective layer 122 may be made of any metal such as silver, aluminum, silver alloy, and aluminum alloy. The transparent adhesive layer 130 may be made of an optically clear adhesive (OCA). The light-shielding layer 113 for the light-emitting element is not limited to a black anisotropic conductive film, and may be made of a black matrix material or the like. When the light-shielding layer 113 for the light-emitting element is made of a black matrix material, the light-emitting element 112 is mounted on the circuit board 111 by a well-known bonding technique such as soldering. The color of the light-shielding layer 113 for the light-emitting element is not limited to black, and any color that can absorb light can be used.

[0052] <Effects and Effects of Display Device 100> Next, the effects of the display device 100 will be explained with reference to Figures 4 and 5. Figure 4 is a diagram illustrating the effects of the display device 100. Figure 5 is a diagram showing a typical display device in which an opening is provided only in the display area R1 as a comparative example.

[0053] As shown in Figure 5, in a typical display device, the opening 122H is provided only in the display area R1 of the reflective substrate where the image is displayed, and there is no opening in the non-display area R2 outside the display area R1. Therefore, in a typical display device, the reflectivity of the non-display area R2, where there is no opening, is higher than the reflectivity of the display area R1, where there is an opening, and the user perceives the non-display area R2 as brighter than the display area R1. Consequently, when a user views a typical display device from the front, the image IM on the display substrate bonded to the back of the reflective substrate becomes visible due to the difference in reflectivity between the display area R1 and the non-display area R2.

[0054] In contrast, as shown in Figure 4, the display device 100 of this embodiment has an opening 122H on the entire surface of the reflective substrate, which includes the display area R1 and the non-display area R2. Therefore, in the display device 100 of this embodiment, the reflectance of the non-display area R2 is substantially the same as that of the display area R1, and the user does not perceive a difference in brightness between the display area R1 and the non-display area R2. Consequently, when a user views the display device 100 of this embodiment from the front, the image on the display substrate 110, which is bonded to the back of the reflective substrate 120, is not visible.

[0055] As described above, the display device 100 of this embodiment suppresses the difference in appearance between the display area R1 and the non-display area R2, thereby improving the quality of the display device 100.

[0056] In addition, according to the display device 100 of this embodiment, since a light-shielding layer 123 for the opening is provided on the back side of the dummy opening 122HD provided in the non-display area R2, it is prevented from seeing objects on the back side of the reflective substrate 120 through the dummy opening 122HD. Furthermore, the configuration of the display area R1 and the configuration of the non-display area R2 become similar, and the difference in appearance between the display area R1 and the non-display area R2 is further suppressed.

[0057] (modified version) A modified example of the display device 100 will be described below with reference to Figures 6 to 9.

[0058] <Example 1> Figure 6 is a cross-sectional view showing the schematic configuration of the display device 100 according to Modification 1. As shown in Figure 6, in the display device 100 according to this modification, a dummy light-emitting element 112D is provided at a position corresponding to the dummy opening 122HD.

[0059] With this configuration, the configuration of the display area R1 and the configuration of the non-display area R2 become closer, and the difference in appearance between the display area R1 and the non-display area R2 is further suppressed.

[0060] <Modification 2> Figure 7 is a cross-sectional view showing the schematic configuration of the display device 100 according to Modification 2. As shown in Figure 7, in the display device 100 according to this modification, a plurality of blue light-emitting elements 112B are mounted on a circuit board 111. The reflective substrate 120 is provided with a reflective layer 122 in which openings 122HR1, 122HR2, and 122HR3 are formed at positions corresponding to the blue light-emitting elements 112B. Two of the three openings 122HR1, 122HR2, and 122HR3 are provided with color conversion layers 125G and 125R. The color conversion layers 125G and 125R include a green conversion layer 125G made of a color conversion material that converts blue light to green light, and a red conversion layer 125R made of a color conversion material that converts blue light to red light. The color conversion material includes phosphors and quantum dots.

[0061] With this configuration, it becomes possible to realize a color image using only the blue light-emitting element 112B. In addition, because a light-shielding layer 113 for light-emitting elements is provided on the circuit board 111, it is prevented that some of the light emitted from a specific light-emitting element 112B reaches other apertures 122H other than the corresponding aperture 122H.

[0062] Therefore, according to the modified display device 100, for example, when displaying only a blue image, it is prevented that green light or red light will be mixed with the blue light and emitted to the outside, thus enabling the display of a high-quality blue image.

[0063] Furthermore, the light-emitting element in this modified example is not limited to a blue light-emitting element; light-emitting elements that emit light of specific wavelengths, such as white light or ultraviolet light, may also be used. The color conversion material constituting the color conversion layer is changed according to the light emitted by the light-emitting element.

[0064] <Variation 3> Figure 8 is a diagram illustrating the display device 100 according to the third modified example. As shown in Figure 8, in the display device 100 according to this modified example, one opening 122HR is provided for each of the three light-emitting elements 112R, 112G, and 112B, which are red, green, and blue light-emitting elements. With this configuration, the area ratio of the opening 122H in the reflective substrate 120 can be reduced, and the reflectivity of the mirror display can be increased.

[0065] <Modification 4> Multiple display boards may be bonded to a single reflective substrate. Figure 9 is a diagram illustrating the display device 100 according to Modification 4, and is a view of the display device 100 from the rear side. As shown in Figure 9, in the display device 100 according to this modification, two small display boards 110 are bonded to a large reflective substrate 120. The area of ​​the reflective substrate 120 to which the display boards 110 are not bonded (non-overlapping area) is covered by a light-shielding layer 123 for the opening.

[0066] As described above, the display device of the present invention has been explained in the embodiments and modified examples. However, it goes without saying that the present invention can be appropriately added to, modified, and omitted by those skilled in the art within the scope of its technical concept.

[0067] For example, the embodiments and modifications described above were explained using the case where the reflective substrate 120 is larger than the display substrate 110. However, the reflective substrate 120 does not necessarily have to be larger than the display substrate 110, and the reflective substrate 120 and the display substrate 110 may be substantially the same size. In this case, for example, a dummy opening 122HD is provided on the edge of the reflective substrate 120.

[0068] Furthermore, in the embodiments and modifications described above, the case in which the size of the opening 122H provided in the reflective layer 122 is larger than the size of the front surface of the light-emitting element 112 was explained as an example. However, the size of the opening 122H is not limited to being larger than the size of the front surface of the light-emitting element 112. The size of the opening 122H may be the same as the size of the front surface of the light-emitting element 112, or it may be smaller than the size of the front surface of the light-emitting element 112. Also, the shape of the opening 122H is not particularly limited and can be appropriately changed according to the shape of the front surface of the light-emitting element 112.

[0069] Furthermore, in the embodiments and modifications described above, the light-shielding layer 113 for the light-emitting element is provided on the display substrate 110. However, the light-shielding layer 113 for the light-emitting element may also be provided on the reflective substrate 120. For example, the light-shielding layer 113 for the light-emitting element can be laminated on the display substrate side of the reflective layer 122. In this case, the light-emitting element 112 is mounted on the circuit board 111 by a well-known bonding technique such as soldering. The light-shielding layer 113 for the light-emitting element may be made of a black matrix material.

[0070] Furthermore, in the embodiments and modifications described above, the case in which the light-emitting element 112 is an inorganic light-emitting element (micro-LED) was used as an example. However, the light-emitting element 112 is not limited to inorganic light-emitting elements, and various light-emitting elements such as organic light-emitting elements can be used.

[0071] Furthermore, in the embodiments and modifications described above, the reflective layer 122 is provided on the surface of the transparent substrate 121 facing the display substrate 110. However, the reflective layer 122 may also be provided on the surface (front surface) of the transparent substrate 121 opposite the display substrate. In this case, it is preferable to form an anti-oxidation film on the reflective layer 122.

[0072] Furthermore, in the embodiments and modifications described above, the non-display area R2, which is provided with the dummy opening 122HD, is located outside the display area R1, which is provided with the opening 122HR that allows light from the light-emitting element 112 to pass through. However, the positional relationship between the display area R1 and the non-display area R2 is not limited to the case where the non-display area R2 is located outside the display area R1. The display area R1 and the non-display area R2 may be in different regions; for example, the non-display area R2 may be located inside the display area R1.

[0073] Furthermore, the embodiments and modifications described above have been explained using the case where the display device of the present invention is a mirror display as an example. However, the display device of the present invention is not limited to a mirror display, and may be a decorative display (decorative panel). In this case, instead of a reflective layer defining the opening, a decorative layer (decorative film) may be formed on the transparent substrate constituting the aperture substrate. Also, the aperture substrate may be a non-transparent substrate with through holes formed therein, rather than a transparent substrate. [Explanation of symbols]

[0074] 100 display devices, 110 Display board, 111 Circuit board, 112, 112R, 112G, 112B, 112D light-emitting elements, 113 Light-shielding layer for light-emitting element, 120 Reflective substrate (aperture substrate), 121 Transparent substrate, 122 reflective layer, 122H,122HD,122HR opening, 125G, 125R color conversion layer, 123 Light shielding layer for opening, 124,130 Transparent adhesive layer.

Claims

1. A display board in which multiple light-emitting elements are arranged in a regular pattern, An aperture substrate having a display area positioned opposite the display substrate and having openings at positions corresponding to the plurality of light-emitting elements that allow light emitted from each light-emitting element to pass through, and a non-display area that is different from the display area and has dummy openings, A display device.

2. The aforementioned aperture substrate is Transparent substrate and The display device according to claim 1, comprising a reflective layer formed on the transparent substrate and having a plurality of openings.

3. The aperture substrate is larger than the display substrate, In the non-overlapping region of the aperture substrate that does not overlap with the display substrate, the dummy opening is provided. The aforementioned aperture substrate is The display device according to claim 1 or 2, further comprising a light-shielding layer for an opening provided on the display substrate side of the non-overlapping region.

4. The display device according to claim 3, wherein a plurality of the display substrates are bonded to one of the aperture substrates.

5. The display device according to claim 1 or 2, further comprising a dummy light-emitting element provided at a position corresponding to the dummy opening.

6. The aforementioned display board is Circuit board and The display device according to claim 1 or 2, comprising the plurality of light-emitting elements arranged on the circuit board.

7. The aforementioned display board is The display device according to claim 6, further comprising a light-shielding layer for light-emitting elements provided in an area of ​​the circuit board other than the area on which the light-emitting elements are arranged.

8. The light-shielding layer for the light-emitting element covers the side surface of the light-emitting element, as described in claim 7.

9. The display device according to claim 1 or 2, further comprising a transparent adhesive layer provided between the display substrate and the aperture substrate, and joining the display substrate and the aperture substrate.

10. The display device according to claim 1 or 2, wherein the light-emitting element is a microLED.

11. The display device according to claim 1 or 2, wherein the opening has a size equal to or larger than the size of the light-emitting element.

12. The display device according to claim 1 or 2, wherein one opening is provided in the display area of ​​the aperture substrate for each of the light-emitting elements.

13. The display device according to claim 1 or 2, wherein one opening is provided in the display area of ​​the aperture substrate for a predetermined number of light-emitting elements.

14. The display device according to claim 1 or 2, wherein the plurality of light-emitting elements include a blue light-emitting element, a green light-emitting element, and a red light-emitting element.

15. The plurality of light-emitting elements are light-emitting elements that emit light of a specific wavelength, The aforementioned display device is The display device according to claim 1 or 2, further comprising a color conversion layer that converts and emits light of a specific wavelength into light of another wavelength.