Display system

Abstract

To provide a display system which offers enhanced visibility and improved contrast of a displayed image.SOLUTION: A display system provided herein comprises a display device having multiple pixels arranged in a matrix on a substrate, and a surface layer covering the display device and comprising a translucent layer and multiple openings provided on the translucent layer. The openings are spaced apart by a given distance. The surface layer is provided with a pattern formed by the multiple openings on a surface thereof.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to display systems. [Background technology]

[0002] In recent years, an article incorporating an operation display panel with a touch sensor has become known, in which a veneer made of natural wood or the like is placed on the display panel (see, for example, Patent Document 1). In Patent Document 1, the veneer is located on the outer surface of the article incorporating an operation display panel, and an array of LED light sources is located inside the article. Letters and patterns made up of light emitted from the array of LED light sources can be seen through the veneer.

[0003] In Patent Document 2, the inorganic light-emitting bodies are provided so as to overlap with the respective transmissive portions provided on the surface layer, so that when the inorganic light-emitting bodies of the display device are turned on, light from the inorganic light-emitting bodies passes through the transmissive portions facing the upper side of the inorganic light-emitting bodies and is irradiated toward the outside of the display device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2019 / 082399 [Patent Document 2] Patent Publication No. 2021-39281 Summary of the Invention [Problem to be solved by the invention]

[0005] In the product with an operation display panel in Patent Document 1, the display image of characters and patterns made up of light from an LED light source that can be seen through the veneer has a reduced resolution in the display state, which can cause the displayed image to become blurred. For this reason, the display image of characters and patterns in Patent Document 1 is limited to applications that lack resolution and simply represent and convey the lighting state of the LED as dots.

[0006] In Patent Document 2, light from the LED light source can be emitted to the outside through the transparent portion, which makes it possible to clearly distinguish the displayed image, compared to Patent Document 1. However, there is a possibility that a user may recognize the transparent portion as an opening (hole) and be able to see it.

[0007] An object of the present disclosure is to provide a display system that can improve the visibility of a displayed image and the contrast of the displayed image. [Means for solving the problem]

[0008] A display system according to one embodiment of the present disclosure comprises a display device having a plurality of pixels arranged in a matrix on a substrate, a semi-transparent layer covering the display device, and a surface layer having a plurality of openings in the semi-transparent layer, the openings being arranged at predetermined intervals, and a pattern formed by the plurality of openings on the surface of the surface layer. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram of a display system according to the first embodiment. [Figure 2] FIG. 2 is a schematic plan view of the display device according to the first embodiment. [Figure 3] FIG. 3 is a diagram showing an example of the main configuration of the display device of the first embodiment. [Figure 4] FIG. 4 is a diagram showing an example of a pixel arrangement of the display panel according to the first embodiment. [Figure 5] FIG. 5 is a schematic partial cross-sectional view of the display device according to the first embodiment. [Figure 6] FIG. 6 is a schematic diagram showing the appearance of the display system when the display device is not emitting light. [Figure 7] FIG. 7 is a schematic diagram showing the appearance of the display system when the display device emits light. [Figure 8] FIG. 8 is a schematic plan view of a display system according to a modified example of the first embodiment. [Figure 9]FIG. 9 is a schematic plan view of a display system according to the second embodiment. [Figure 10] FIG. 10 is a schematic partial cross-sectional view of a display system according to the second embodiment. [Figure 11] FIG. 11 is a schematic plan view of a display system according to a modified example of the second embodiment. [Figure 12] FIG. 12 is a schematic partial cross-sectional view of a display system according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Modes for carrying out the invention (embodiments) will be described in detail with reference to the drawings. The present disclosure is not limited to the contents described in the following embodiments. Furthermore, the components described below include those that can be easily imagined by a person skilled in the art and those that are substantially identical. Furthermore, the components described below can be combined as appropriate. Note that the disclosure is merely an example, and any appropriate modifications that a person skilled in the art can easily conceive while maintaining the gist of the invention are naturally included within the scope of the present disclosure. Furthermore, for clarity of explanation, the drawings may show the width, thickness, shape, etc. of each part schematically compared to the actual embodiment. However, these are merely examples and are not intended to limit the interpretation of the present disclosure. Furthermore, in this specification and each figure, elements similar to those previously described with reference to the preceding figures may be designated by the same reference numerals, and detailed descriptions may be omitted as appropriate.

[0011] In this specification and claims, when expressing an aspect of placing another structure on top of a certain structure, the term "on top" is used, unless otherwise specified, to include both a case in which another structure is placed directly on top of a certain structure so as to be in contact with the certain structure, and a case in which another structure is placed above a certain structure via yet another structure.

[0012] (Embodiment 1) FIG. 1 is a schematic diagram of a display system according to this embodiment. As shown in FIG. 1, the display system 1 according to this embodiment includes a display device 100 and a surface layer 5. The surface layer 5 is, for example, a veneer or plywood made of wood, or a veneer made of molded wood chips, and the surface of the surface layer 5 has, for example, a wood grain pattern. In the case of wood, it can be selected from sycamore, maple, cherry, or walnut, but is not limited to these. The thickness of the surface layer 5 is 0.2 mm to 0.5 mm. In addition to wood, the surface of the surface layer 5 may be marble, leather, wallpaper film, or the like.

[0013] The display device 100 is attached to the surface layer 5 and displays an image. The display device 100 is disposed on the back surface of the surface layer 5.

[0014] Hereinafter, one direction parallel to the surface of the surface layer 5 will be referred to as the first direction Dx, and the other direction parallel to the surface will be referred to as the second direction Dy. The first direction Dx is perpendicular to the second direction Dy, but may intersect with the second direction Dy without being perpendicular. Furthermore, a direction perpendicular to the first direction Dx and the second direction Dy, i.e., a direction perpendicular to the surface of the surface layer 5, will be referred to as the third direction Dz. The third direction Dz corresponds, for example, to the normal direction of the first substrate 71 described below. Hereinafter, a plan view refers to a positional relationship when viewed from the third direction Dz. Furthermore, one direction parallel to the third direction Dz will be referred to as direction Dz1, and the other direction parallel to the third direction Dz, i.e., the direction opposite to direction Dz1, will be referred to as direction Dz2. Direction Dz1 is the direction from the array substrate SUB1 described below toward the surface of the surface layer 5.

[0015] Fig. 2 is a schematic plan view of a display device according to this embodiment. As shown in Fig. 2, the display device 100 has a display area AA and a peripheral area GA. The display area AA is an area in which a plurality of pixels 48 are arranged and in which an image is displayed. The peripheral area GA is an area that does not overlap with the plurality of pixels 48 and is arranged outside the display area AA. The plurality of pixels 48 are arranged in the first direction Dx and the second direction Dy in the display area AA, for example, in a matrix pattern.

[0016] Each of the pixels 48 has, for example, a first subpixel 49R, a second subpixel 49G, and a third subpixel 49B. The first subpixel 49R displays a first primary color (for example, red). The second subpixel 49G displays a second primary color (for example, green). The third subpixel 49B displays a third primary color (for example, blue).

[0017] The first subpixel 49R, the second subpixel 49G, and the third subpixel 49B are arranged in this order along the first Dx direction and the second Dy direction. The arrangement of the first subpixel 49R, the second subpixel 49G, and the third subpixel 49B is a so-called stripe arrangement. Hereinafter, when the first subpixel 49R, the second subpixel 49G, and the third subpixel 49B are not to be distinguished from one another, they may be simply referred to as "subpixels 49." Note that the arrangement of the subpixels 49 is not limited to a stripe arrangement.

[0018] The surface layer 5 is provided over the entire area of ​​the display device 100, including the display area AA and the peripheral area GA, in a plan view. The surface layer 5 has a semi-transparent layer 51 having light-transmitting properties and a plurality of openings OP formed in the semi-transparent layer 51. The semi-transparent layer 51 is a layer having a light transmittance of 1 to 50%, and for example, the light transmittance of the first embodiment is approximately 3.5%.

[0019] 2, the surface layer 5 has a plurality of openings OP. In this embodiment, the openings OP are openings (holes) that penetrate the surface layer 5 from the surface in the direction Dz2 to the surface in the direction Dz1. The openings OP have a square shape. The openings OP may also have a circular, polygonal, or rectangular shape.

[0020] The openings OP are arranged at predetermined intervals along the first direction Dx and the second direction Dy. The openings OP include a first opening OP1 and a second opening OP2. The size of the first opening OP1 is different from that of the second opening OP2, and the first opening OP1 is larger than the second opening OP2.

[0021] In this embodiment, the plurality of openings OP are arranged in a square lattice pattern in plan view. Note that the arrangement, number, etc. of the plurality of openings OP shown in Fig. 2 are merely examples and can be changed as appropriate. The plurality of openings OP may be arranged in either a rhombic lattice pattern or a rectangular lattice pattern in plan view.

[0022] Here, the size of one side of the opening OP when viewed in a plan view is 50 μm or more and 100 μm or less.

[0023] Here, the pitch between adjacent openings OP when viewed in a plan view is referred to as the pitch D. The pitch D is the length connecting the center points of adjacent openings OP in the second direction Dy. The pitch D is a constant value between 100 μm and 200 μm. Note that the pitch D may also be the length connecting the center points of adjacent openings OP in the first direction Dx.

[0024] A pattern is provided by the openings OP in a plan view on the surface of the surface layer 5. In this embodiment, the surface of the surface layer 5 can be visually recognized by the user as a checkered pattern.

[0025] As a result, when the display device is not emitting light, and the user views the surface of the surface layer 5, the openings OP are less likely to be seen as holes and can be recognized as a checkerboard pattern, thereby improving the visibility of the displayed image.

[0026] Table 1 shows the relationship between the diameter of the openings OP, the aperture ratio, and the pitch of the openings OP, where the aperture ratio represents the area ratio of the openings OP to the display area AA.

[0027] [Table 1]

[0028] As shown in Table 1, the larger the aperture ratio, the narrower the pitch of the openings OP. Also, the larger the diameter of the openings OP, the wider the pitch.

[0029] Table 2 shows the relationship between the density of the openings OP and the pitch of the openings OP. Here, the density of the openings OP is the number of openings OP per inch, and the unit of the density of the openings OP is dpi.

[0030] [Table 2]

[0031] As shown in Table 2, the narrower the pitch of the openings OP, the higher the density of the openings OP. Note that, since the resolution of the displayed image is low at 100 dpi or less, and the pitch is small and difficult to process at 250 dpi or more, the density of the openings OP is preferably 100 dpi or more and 250 dpi or less.

[0032] This increases the resolution of the displayed image and improves visibility.

[0033] FIG. 4 is a block diagram showing an example of the configuration of a display device according to the first embodiment. As shown in FIG. 3, the display device 100 according to the first embodiment includes a signal processing unit 10, a display unit 20, a light source device 50, and a light source control circuit 60. The display unit 20 includes a display panel drive unit 40 and a display panel 2. The signal processing unit 10 performs various outputs based on an input signal IS input from an external control device 200, and controls the operation of the display unit 20 and the light source device 50. The input signal IS is a signal that functions as data for displaying and outputting an image on the display device 100, such as an RGB image signal. The input signal IS corresponds to the resolution of the display panel 2. That is, the input signal IS includes pixel signals corresponding to the number of pixels 48 of the display panel 2 and their arrangement in the X and Y directions, which will be described later. The signal processing unit 10 outputs an output image signal OS generated based on the input signal IS to the display unit 20. When the input signal IS is input, the signal processing unit 10 outputs a light source drive signal BL to the light source control circuit 60 to control the lighting of the light source device 50. The light source control circuit 60 is, for example, a driver circuit for the light source device 50, and operates the light source device 50 in response to a light source drive signal BL. The light source device 50 has a light source that emits light from a light-emitting area LA. In the first embodiment, the light source control circuit 60 operates the light source device 50 so that a constant amount of light is emitted from the light-emitting area LA of the light source device 50 in accordance with the display timing of a frame image.

[0034] The display unit 20 includes a display panel 2 and a display panel driver 40. The display panel 2 includes a display area AA in which a plurality of pixels 48 are provided. The plurality of pixels 48 are arranged, for example, in a matrix. The display panel 30 of the first embodiment is a liquid crystal image display panel. The display panel driver 40 includes a signal output circuit 41 and a scanning circuit 42. The signal output circuit 41 is a circuit that functions as a so-called source driver and drives the plurality of pixels 48 in accordance with an output image signal OS. The scanning circuit 42 is a circuit that functions as a so-called gate driver and outputs a drive signal that scans the plurality of pixels 48 arranged in a matrix in units of a predetermined row (for example, one row). The pixels 48 are driven to output a gradation value corresponding to the output image signal OS at the timing when the drive signal is output.

[0035] The light source device 50 is disposed on the rear surface of the display unit 20. The light source device 50 emits light toward the display unit 20, thereby illuminating the display unit 20.

[0036] Fig. 4 is a diagram showing an example of a pixel arrangement of the display panel 2. As shown in Fig. 4, pixels 48 arranged in a matrix on the display panel 2 include a first sub-pixel 49R that displays a first color, a second sub-pixel 49G that displays a second color, and a third sub-pixel 49B that displays a third color. The first color, the second color, and the third color are not limited to the first primary color, the second primary color, and the third primary color, but may be different colors such as complementary colors. In the following description, when there is no need to distinguish between the first sub-pixel 49R, the second sub-pixel 49G, and the third sub-pixel 49B, they will be referred to as sub-pixels 49.

[0037] Note that pixel 48 may have further subpixels 49 in addition to first subpixel 49R, second subpixel 49G, and third subpixel 49B. For example, pixel 48 may have a fourth subpixel that displays a fourth color. The fourth subpixel displays the fourth color (e.g., white). When illuminated with the same light source lighting intensity, the fourth subpixel is preferably brighter than the first subpixel 49R that displays the first color, the second subpixel 49G that displays the second color, and the third subpixel 49B that displays the third color.

[0038] The display panel 2 is, for example, a transmissive color liquid crystal display panel. A first color filter that passes a first primary color is arranged between the first sub-pixel 49R and the image observer, a second color filter that passes a second primary color is arranged between the second sub-pixel 49G and the image observer, and a third color filter that passes a third primary color is arranged between the third sub-pixel 49B and the image observer.

[0039] The signal output circuit 41 is electrically connected to the display panel 2 by a signal line DTL. The display panel drive unit 40 uses a scanning circuit 42 to select a sub-pixel 49 in the display panel 2 and control the on / off of a switching element (for example, a thin film transistor (TFT)) for controlling the operation (light transmittance) of the sub-pixel 49. The scanning circuit 42 is electrically connected to the display panel 2 by a scanning line SCL.

[0040] Fig. 5 is a schematic partial cross-sectional view of the display device according to embodiment 1. As shown in Fig. 5, the display device 100 includes an array substrate SUB1, a counter-substrate SUB2, and a liquid crystal layer LC. The surface layer 5 has a first surface 510 and a second surface 511 opposite to the first surface 510. An opening OP is provided so as to penetrate from the second surface 511 to the first surface 510.

[0041] The array substrate SUB1 includes a first substrate 71, which is a light-transmitting substrate such as glass; a first alignment film 62 laminated on the liquid crystal layer LC side of the first substrate 71; a plurality of pixel electrodes PE covered by the first alignment film 62; and a first polarizing plate 63 laminated on the side of the first substrate 71 opposite the liquid crystal layer LC. The first alignment film 62 aligns the liquid crystal molecules in the liquid crystal layer LC in a predetermined direction and is in direct contact with the liquid crystal layer LC. The first alignment film 62 is made of, for example, polyimide, and has been subjected to rubbing treatment or photo-alignment treatment. The first polarizing plate 63 has the function of converting light incident from the light source device 50 side disposed on the rear surface of the display device 100 into linearly polarized light.

[0042] The opposing substrate SUB2 includes a second substrate 68 which is a translucent insulating substrate such as glass, a color filter CF formed on the liquid crystal layer LC side of the second substrate 68, a second alignment film 67 formed on the liquid crystal layer LC side of the color filter CF, a common electrode CE covered by the second alignment film 67, and a second polarizer 69 formed on the side of the second substrate 68 opposite to the liquid crystal layer LC side.

[0043] The common electrode CE is disposed so as to straddle two adjacent pixel electrodes PE. Each pixel electrode PE overlaps a color filter CF. The pixel electrodes PE and the common electrode CE are light-transmitting.

[0044] The color filter CF has, for example, a periodic arrangement of first, second, and third sub-pixels 49R, 49G, and 49B. Each pixel 48 includes three sub-pixels 49, and each pixel 48 is associated with a set of three color regions, 49R, 49G, and 49B. The color filter CF may include color regions of four or more colors. In this case, the pixel 48 may include four or more sub-pixels 49.

[0045] The display device 100 may be provided with a cover member formed of a glass substrate or a resin substrate, a detection device such as a touch panel, and the like, as needed.

[0046] The plurality of pixels 48 include pixels provided so as to overlap with the semi-transmissive layer 51 and pixels provided so as to overlap with the opening OP.

[0047] The light L transmitted through the pixel 48 includes a first light L1 and a second light L2. The first light L1 is light that passes through the pixel provided to overlap with the semi-transmitting layer 51 and the semi-transmitting layer 51. The second light L2 is light that passes through the pixel provided to overlap with the opening OP and the opening OP. This allows the user to visually recognize the first light L1 and the second light L2 in a composite manner.

[0048] Next, we will explain how the display system 1 appears when viewed. Fig. 6 is a schematic diagram showing the appearance of the display system when the display device does not emit light, and Fig. 7 is a schematic diagram showing the appearance of the display system when the display device emits light.

[0049] 6, when the display device 100 is not emitting light to the surface layer 5, the pixels 48 do not emit light. Therefore, when the display system 1 is viewed from above when the display device 100 is not emitting light, the surface layer 5 of the display system 1 is visible, the display device 100 is not visible to the user, and the surface of the surface layer 5 is visible as a pattern.

[0050] On the other hand, light from the display device 100 reaches the user through the subpixels 49. As shown in Fig. 7, the user views the light emitted from the light source device 50 and transmitted through the display device 100, thereby viewing the image output by the display panel 2.

[0051] When the display device 100 emits light to the surface layer 5, the light transmitted from the pixel 48 passes through the opening OP and the semi-transparent layer 51 facing the direction Dz1 side of the pixel 48 and is irradiated toward the outside of the display device 100.

[0052] The display panel 2 displays a display image PI on the direction Dz1 side of the surface layer 5 using a first light L1 transmitted through the semi-transmissive layer 51 and a second light L2 transmitted through the opening OP. The display image PI has a background image P1 and a picture image P2.

[0053] This improves the contrast of the display image PI against the wood grain or other pattern on the surface of the surface layer 5 without increasing the number of openings OP, thereby improving the visibility of the display image. For example, the user can more easily distinguish the background image P1 against the wood grain or other pattern on the surface of the surface layer 5, and can more clearly see the picture image P2 in contrast to the background image P1.

[0054] (Modification of the first embodiment) 8 is a schematic plan view of a display system according to a modified example of embodiment 1. In the following description, the same components as those described in the above embodiment are denoted by the same reference numerals, and redundant description will be omitted.

[0055] 8, a display system 1A according to a modification of the first embodiment includes a display device 100 and a surface layer 5A. A heart-shaped pattern is formed in the surface layer 5A by a plurality of openings OP.

[0056] The configuration and operation of a display system 1A according to a modification of the first embodiment are almost the same as those of the first embodiment, and therefore will not be described.

[0057] (Embodiment 2) Fig. 9 is a schematic partial cross-sectional view of a display system according to embodiment 2. Fig. 10 is a schematic plan view of a display system according to embodiment 2. In the following description, the same components as those described in the above embodiments are denoted by the same reference numerals, and redundant description will be omitted.

[0058] 9, a display system 1B according to the second embodiment includes a display device 100 and a surface layer 5B. The pitch D includes a first pitch D1 that is a wide pitch and a second pitch D2 that is a narrow pitch. The openings OP have a uniform size.

[0059] 10 , the semi-transparent layer 51 at the first pitch D1 includes a thin layer 512 and a thick layer 513. This makes the transmittance of the thin portion of the semi-transparent layer 51 higher than the transmittance of the thick portion of the semi-transparent layer 51.

[0060] When the thickness of the semi-transparent layer 51 is constant, the transmittance of the second pitch D2 is higher than that of the first pitch D1. However, by providing a thin layer 512 of the semi-transparent layer 51 in part of the semi-transparent layer 51 at the first pitch D1, the difference in transmittance can be reduced even when the pitch is different, thereby improving the resolution of the displayed image.

[0061] (Modification of the second embodiment) 11 is a schematic plan view of a display system according to a modified example of embodiment 2. In the following description, the same components as those described in the above embodiment are denoted by the same reference numerals, and redundant description will be omitted.

[0062] 11, a display system 1C according to a modification of the second embodiment includes a display device 100 and a surface layer 5C. A heart-shaped pattern is formed on the surface of the surface layer 5C by openings OP.

[0063] The configuration and operation of a display system 1C according to a modification of the second embodiment are almost the same as those of the second embodiment, and therefore will not be described.

[0064] (Embodiment 3) 12 is a schematic partial cross-sectional view of a display system according to embodiment 3. In the following description, the same components as those described in the above embodiments are denoted by the same reference numerals, and redundant description will be omitted.

[0065] 12, a display system 1D according to the third embodiment includes a display device 100 and a surface layer 5D. The pixels 48 include pixels 48 overlapping with recesses 51a and pixels 48 overlapping with portions of the semi-transmissive layer that do not have recesses 51a. The surface layer 5D has a plurality of recesses 51a recessed from a first surface 510 toward a second surface 511.

[0066] The recesses 51a are arranged at predetermined intervals. The recesses 51a include first recesses 501 and second recesses 502, and the size of the first recesses 501 is different from that of the second recesses 502, but the recesses 51a are arranged at a constant pitch. The recesses 51a form a checkered or heart-shaped pattern on the surface of the surface layer 5D, similar to the surface layer 5 of the first embodiment or the surface layer 5A of the modified example of the first embodiment (see FIGS. 2 and 8).

[0067] The transmittance of the recess 51a is greater than the transmittance of light around the recess 51a. The light L transmitted from the pixel 48 includes a first light L1 and a second light L2. The first light L1 is light that transmits through the pixel 48 provided so as to overlap with the semi-transmitting layer 51 in a portion where the recess 51a is not present and the semi-transmitting layer 51 in a portion where the recess 51a is not present. The second light L2 is light that transmits through the pixel 48 provided so as to overlap with the recess 51a and the recess 51a. This allows the user to visually recognize the first light L1 and the second light L2 in a composite manner.

[0068] The configuration and operation of a display system 1D according to the second modified example of the first embodiment are almost the same as those of the first embodiment, and therefore will not be described.

[0069] Furthermore, other effects and advantages brought about by the aspects described in this embodiment that are clear from the description in this specification or that can be appropriately thought of by a person skilled in the art are naturally understood to be brought about by the present disclosure. [Explanation of symbols]

[0070] 1, 1A, 1B, 1C, 1D display system 2 Display panel 5, 5A, 5B, 5C, 5D surface layer 48 pixels 49 subpixels 51 Semi-transparent layer 51a Recess 100 display device 501 First recess 502 Second recess OP opening OP1 1st opening OP2 Second opening D pitch D1 1st pitch D2 2nd pitch

Claims

1. a display device having a plurality of pixels arranged in a matrix on a substrate; a surface layer covering the display device and having a semi-transmissive layer and a plurality of openings formed in the semi-transmissive layer; Equipped with The openings are arranged at predetermined intervals, A pattern formed by the plurality of openings is provided on the surface of the surface layer. Display system.

2. The plurality of openings include a first opening and a second opening, The size of the first opening is different from that of the second opening, The pitch of the openings is constant. The display system of claim 1 .

3. The opening has a fixed size, the pitch of the openings includes a first pitch that is a wide pitch and a second pitch that is a narrow pitch; The semi-transparent layer at the first pitch includes a thin semi-transparent layer and a thick semi-transparent layer. The display system of claim 1 .

4. The diameter of the opening is 50 μm or more and 100 μm or less.

4. A display system according to claim 2 or 3.

5. The pitch of the plurality of openings is 100 μm or more and 200 μm or less. The display system of claim 4 .

6. The resolution of the opening is 100 dpi or more and 250 dpi or less. The display system of claim 5 .

7. a display device having a plurality of pixels arranged in a matrix on a substrate; a surface layer covering the display device and having a semi-transmissive layer and a plurality of recesses provided in the semi-transmissive layer; Equipped with The recesses are arranged at predetermined intervals, A pattern formed by the plurality of recesses is provided on the surface of the surface layer. Display system.

8. The recess includes a first recess and a second recess, The size of the first recess is different from that of the second recess, The pitch of the recesses is constant. The display system of claim 7.

Images