Grating structure and preparation method thereof, and spliced display

Abstract

The invention discloses a grating structure, a preparation method thereof and a spliced display, relates to the technical field of spliced displays, and aims to solve the problem that the appearance consistency cannot be achieved at the joint of spliced wires of two adjacent display screens in the spliced display in the related technology in the visual perception of human eyes. The spliced display comprises a plurality of display screens, every two adjacent display screens are electrically connected through a wire rod, the wire rod is located at the joint of non-display areas of every two adjacent display screens, a grating structure is arranged at the joint of the non-display areas of every two adjacent display screens, and the orthographic projection of the grating structure on the spliced display covers the joint of the non-display areas of every two adjacent display screens. The grating structure comprises a first transparent substrate, a second transparent substrate and a plurality of columnar convex lenses, the first transparent substrate is close to the wire rod, and the columnar convex lenses are arranged between the first transparent substrate and the second transparent substrate in the first direction; wherein the first direction, the length direction of the columnar convex lens and the thickness direction of the first transparent substrate are perpendicular to each other.

Description

Technical Field

[0001] The present application relates to the technical field of spliced ​​displays, and in particular to a grating structure and a preparation method thereof, and a spliced ​​display. Background Art

[0002] The pixel density of transparent glass-based LED display screens (referred to as display screens) is extremely high, and it can achieve ultra-high resolution display. At the same time, in terms of color reproduction, it can accurately reproduce the colors of the real world. With people's pursuit of large-screen displays, multiple display screens are usually spliced ​​together to form a spliced ​​display, which can not only achieve the effect of large-screen display, but also provide great convenience for later repairs.

[0003] The transparent glass-based LED splicing display in the related technology, referred to as the splicing display, is the same as the traditional display screen in basic hardware structure. The splicing display is composed of multiple display screens. Two adjacent display screens are connected by wires. There will be abrupt and complex lines at the connection of the splicing wires of the display screen. From the visual perception of the human eye, the overall appearance consistency of the splicing display cannot be achieved. Summary of the invention

[0004] The embodiments of the present application provide a grating structure and a preparation method thereof, and a spliced ​​display, which are used to solve the problem in the related art that the connection between the spliced ​​wires of two adjacent display screens in the spliced ​​display cannot achieve appearance consistency in terms of human eye visual perception.

[0005] In a first aspect, an embodiment of the present application provides a grating structure for a spliced ​​display, wherein the spliced ​​display includes a plurality of display screens, two adjacent display screens are electrically connected via wires, the wires are located at the connection between non-display areas of two adjacent display screens, the grating structure is disposed at the connection between non-display areas of two adjacent display screens, the orthographic projection of the grating structure on the spliced ​​display covers the wires, the grating structure includes: a first transparent substrate, a second transparent substrate, and a plurality of cylindrical convex lenses, the first transparent substrate being close to the wires, the plurality of cylindrical convex lenses being arranged between the first transparent substrate and the second transparent substrate along a first direction; wherein the first direction, the length direction of the cylindrical convex lenses, and the thickness direction of the first transparent substrate are perpendicular to each other.

[0006] The grating structure provided in the embodiment of the present application is provided with a grating structure above the wire at the connection of the non-display areas of two adjacent display screens. On the one hand, the grating structure can fill the connection of the two adjacent display screens, so that the two adjacent display screens are relatively flat, which is beneficial to improve the flatness of the spliced ​​display screen; on the other hand, the orthographic projection of the grating structure on the spliced ​​display covers the wire, that is, the grating structure can cover the wire. At the same time, the grating structure adopts a plurality of cylindrical convex lenses arranged between the first transparent substrate and the second transparent substrate, that is, by adopting the first transparent substrate and the second transparent substrate that can transmit light and a plurality of cylindrical convex lenses that converge light, the cylindrical convex lenses can play a role in converging light. In this way, when the human eye looks at the grating structure from the side of the second transparent substrate, the plurality of cylindrical convex lenses in the grating structure can decompose the wire into a plurality of thin lines, so that the human eye cannot distinguish the shape outline of the object such as the wire located below the grating structure, thereby visually making the wire achieve the effect of "invisibility", which is beneficial to improve the appearance consistency of the spliced ​​display screen.

[0007] In some embodiments, the cylindrical convex lens is a semi-cylindrical convex lens, the plane of the cylindrical convex lens is in contact with the first transparent substrate, and the curved surface of the cylindrical convex lens and the second transparent substrate are filled with optical transparent glue.

[0008] Through the above arrangement, the grating structure can facilitate the installation and positioning of the cylindrical convex lens and the first transparent substrate on the basis of meeting the optical requirements, thereby facilitating the improvement of the assembly accuracy and efficiency of the grating structure.

[0009] In some embodiments, the plurality of cylindrical convex lenses are arranged at intervals along the first direction, and the interval between two adjacent cylindrical convex lenses is a preset value.

[0010] The above settings are helpful to improve the "stealth" effect of the wire.

[0011] In some embodiments, the plurality of cylindrical convex lenses are arranged at equal intervals along the first direction.

[0012] Through the above arrangement, after the light passes through the grating structure, the wires below the grating are evenly divided, thereby further improving the "stealth" effect of the wires.

[0013] In some embodiments, the cylindrical convex lens is fixed between the first transparent substrate and the second transparent substrate by optically transparent adhesive, and in the thickness direction of the first transparent substrate, the thickness of the optically transparent adhesive is greater than the thickness of the cylindrical convex lens.

[0014] Through the above arrangement, both ends of the cylindrical convex lens are fixed to the first transparent substrate and the second transparent substrate respectively by optical transparent glue, so that the grating structure further improves the firmness of the cylindrical convex lens and the first transparent substrate and the second transparent substrate while meeting the optical requirements, thereby improving the reliability of the grating structure.

[0015] In some embodiments, the first transparent substrate and the second transparent substrate are made of the same material, and / or the thickness of the first transparent substrate is greater than or equal to the thickness of the second transparent substrate.

[0016] Through the above arrangement, the grating structure not only reduces the overall thickness of the grating structure but also reduces the cost while meeting the optical requirements.

[0017] In some embodiments, the thickness of the first transparent substrate is 20 mm-50 mm, and the thickness of the second transparent substrate is 10 mm-20 mm.

[0018] Through the above-mentioned setting, the grating structure achieves the purpose of both the "invisible" effect of the wire and the lightness and thinness.

[0019] In some embodiments, the second transparent substrate includes a base material layer, an adhesive layer, and an anti-fingerprint layer, and the base material layer is close to the first transparent substrate.

[0020] Through the above arrangement, the grating structure has an anti-fingerprint effect on the basis of meeting the optical requirements, thereby further improving the aesthetics.

[0021] In some embodiments, the anti-fingerprint layer includes an anti-fingerprint film and a protective layer, and the protective layer is laminated on the anti-fingerprint film by molding to form the anti-fingerprint layer.

[0022] Through the above arrangement, the grating structure reduces the probability of wear of the anti-fingerprint film caused by long-term use on the basis of meeting the optical requirements, thereby increasing the service life of the grating structure.

[0023] In some embodiments, the diameter of the cylindrical convex lens is 10mm-20mm, and the preset value is 20um-50um.

[0024] By reasonably selecting the preset value of the diameter of the cylindrical convex lens and the interval between two adjacent cylindrical convex lenses, the grating structure can meet the optical requirements, that is, achieve the "invisible" effect of the wire. At the same time, during the assembly process of the grating structure with the display screen, the position of the grating structure is not required to be high, which facilitates the assembly of the grating structure. In addition, it is beneficial to reduce the production cost of the grating structure.

[0025] In the second aspect, an embodiment of the present application also provides a method for preparing a grating structure, wherein the grating structure includes a first transparent substrate, a second transparent substrate and a plurality of cylindrical convex lenses, wherein the plurality of cylindrical convex lenses are arranged along a first direction between the first transparent substrate and the second transparent substrate, and the preparation method includes: arranging the plurality of cylindrical convex lenses along the first direction on the first transparent substrate, injecting optically transparent glue between adjacent cylindrical convex lenses, and curing them by ultraviolet light; placing the second transparent substrate on the optically transparent glue, and forming the grating structure by hot pressing or molding.

[0026] The grating structure obtained by adopting the preparation method of the grating structure provided in the embodiment of the present application can, on the one hand, fill the connection between two adjacent display screens so that the two adjacent display screens are relatively flat, which is beneficial to improving the flatness of the spliced ​​display screen; on the other hand, the multiple cylindrical convex lenses in the grating structure can decompose the wire into multiple fine wires, so that the human eye cannot distinguish the shape contour of the object located under the grating structure, such as the wire, thereby visually making the wire achieve the effect of "invisibility", which is beneficial to improving the appearance consistency of the spliced ​​display screen.

[0027] In a third aspect, an embodiment of the present application further provides a spliced ​​display, comprising a plurality of display screens and a grating structure as described in the first aspect, wherein two adjacent display screens are electrically connected via a wire, and the wire is located at a connection between non-display areas of two adjacent display screens; the grating structure is disposed at a connection between non-display areas of two adjacent display screens, and the orthographic projection of the grating structure on the spliced ​​display covers the wire.

[0028] The spliced ​​display provided in the embodiment of the present application is provided with the grating structure of the first aspect mentioned above at the connection of the non-display areas of two adjacent display screens. On the one hand, the grating structure can fill the connection between the two adjacent display screens, so that the two adjacent display screens are relatively flat, which is beneficial to improve the flatness of the spliced ​​display screen; on the other hand, it makes it impossible for the human eye to distinguish the shape contour of objects such as wires located under the grating structure, so that the wires achieve a visual "invisible" effect, which is beneficial to improve the appearance consistency of the spliced ​​display.

[0029] In some embodiments, a clearance gap is provided at the connection between the non-display areas of two adjacent display screens, the grating structure is located in the clearance gap, and the length direction of the cylindrical convex lens of the grating structure is parallel to the extension direction of the clearance gap.

[0030] The above configuration is helpful to improve the appearance consistency of the spliced ​​display.

[0031] In some embodiments, an upper surface of the second transparent substrate of the grating structure is flush with an upper surface of the display screen.

[0032] Through the above arrangement, the grating structure is flush with the upper surfaces of two adjacent display screens, further improving the flatness and aesthetics of the spliced ​​display. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 This is a schematic diagram of the structure of the connection between two adjacent display screens in a spliced ​​display when no grating structure is provided in some embodiments of the present application;

[0035] Figure 2 This is a schematic diagram of the structure of the connection between two adjacent display screens in a spliced ​​display when a grating structure is provided in some embodiments of the present application;

[0036] Figure 3 For Figure 2 The dotted line AA is a cross-sectional view of the grating structure in the first embodiment;

[0037] Figure 4 are cross-sectional schematic diagrams of grating structures in other embodiments;

[0038] Figure 5 is a cross-sectional view of the second transparent substrate in the grating structure in the second embodiment;

[0039] Figure 6 For Figure 2 The dashed line AA is a cross-sectional view of the spliced ​​display in the fourth embodiment.

[0040] Description of reference numerals:

[0041] 100, grating structure; 200, display screen; 210, wire; 220, avoidance gap;

[0042] 10. a first transparent substrate;

[0043] 20. Cylindrical convex lens;

[0044] 30. second transparent substrate; 31. base material layer; 32. adhesive layer; 33. anti-fingerprint layer; 34. anti-fingerprint film; 35. protective layer;

[0045] 40. Optically transparent adhesive. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0050] The pixel density of transparent glass-based LED display screens (referred to as display screens) is extremely high, and it can achieve ultra-high resolution display. At the same time, in terms of color reproduction, it can accurately reproduce the colors of the real world. With people's pursuit of large-screen displays, multiple display screens are usually spliced ​​together to form a spliced ​​display, which can not only achieve the effect of large-screen display, but also provide great convenience for later repairs.

[0051] The transparent glass-based LED splicing display in the related art, referred to as the splicing display, is the same as the traditional display screen in basic hardware structure. The splicing display is made up of multiple display screens. The display screen includes a display area and a non-display area located around the display area. Two adjacent display screens are connected by wires. The wires are located in the non-display area of ​​the display screen. There will be abrupt and complex lines at the connection of the splicing wires of the display screen, which makes the connection of the splicing wires of the two adjacent display screens lower than the display screen, thus making the splicing display uneven. If only a transparent substrate such as glass is covered at the splicing wires, the flatness of the splicing display can be improved, but the splicing wires can still be seen visually. Therefore, the splicing display in the related art cannot achieve the purpose of taking into account both the high flatness at the splicing wires and the "invisible" effect of the wires. In other words, the splicing display in the related art still cannot achieve the overall appearance consistency of the splicing display in terms of human vision, and the user experience is poor.

[0052] In order to solve the above problems, the embodiments of the present application provide a grating structure and a preparation method thereof, and a spliced ​​display.

[0053] The above-mentioned display screen is the abbreviation of glass-based LED display screen.

[0054] like Figure 2 and Figure 3 As shown, the grating structure 100 includes: a first transparent substrate 10, a second transparent substrate 30 and a plurality of cylindrical convex lenses 20, the first transparent substrate 10 is close to the wire 210, and the plurality of cylindrical convex lenses 20 are arranged between the first transparent substrate 10 and the second transparent substrate 30 along a first direction; wherein the first direction ( Figure 2 and Figure 3 The direction indicated by the arrow X in the middle), the length direction of the cylindrical convex lens 20 ( Figure 2 The vertical direction, perpendicular to Figure 2 The direction indicated by arrow X) and the thickness direction of the first transparent substrate 10 ( Figure 3 In the vertical direction) they are perpendicular to each other.

[0055] The first transparent substrate 10 is a transparent substrate for carrying the cylindrical convex lens 20. The transparent substrate can be a transparent substrate such as glass, polyethylene terephthalate (PET), polycarbonate (PC), polymethyl methacrylate (PMMA). The first transparent substrate 10 can be rigid or flexible.

[0056] The second transparent substrate 30 is used to protect the cylindrical convex lens 20, and the second transparent substrate 30 can be made of the same material as the first transparent substrate 10. Since the second transparent substrate 30 is close to the human eye, fingerprints will be left on the second glass substrate during use, thereby affecting the appearance. Therefore, in the design process, the structure of the second transparent substrate 30 can also be different from that of the first transparent substrate 10, and the second transparent substrate 30 can also be a layer group including a transparent base layer and a functional layer. For example, the second transparent substrate 30 can be a layer group that can achieve an anti-fingerprint function.

[0057] The cylindrical convex lens 20 refers to a cylindrical convex lens, which mainly plays the role of converging light. The imaging principle of the cylindrical convex lens 20 is based on the refraction of light. Due to its shape, which is thick in the middle and thin on both sides, the light is refracted when passing through, thereby forming a specific imaging effect. This cylindrical convex lens 20 is used in occasions where lateral magnification or imaging adjustment in a specific direction is required. The main features of the imaging of the cylindrical convex lens 20 include lateral magnification, opposite imaging direction, and change in imaging size. When the object is within one focal length of the cylindrical convex lens 20, a laterally magnified virtual image that does not change in the left and right directions can be seen through the cylindrical convex lens 20; when the object is at a slightly farther position from the cylindrical convex lens 20, a laterally magnified real image in the opposite left and right directions can be seen; when the object is at a farther position from the cylindrical convex lens 20, a laterally reduced real image in the opposite left and right directions can be seen. That is, the grating structure 100 can virtualize, i.e., "make invisible", objects within its coverage area and within one focal length of the cylindrical convex lens 20. Therefore, when setting the grating structure 100, it is only necessary to cover the wire 210 with the orthographic projection of the grating structure 100 on the spliced ​​display.

[0058] The columnar shape refers to a dimension in the length direction that is greater than or much greater than a dimension in a direction perpendicular to the length direction. For example, the columnar shape may be a cylindrical structure, a semi-cylindrical structure, a prism structure, etc. The columnar shape is described by taking a semi-cylindrical structure as an example, and the length of the semi-cylindrical structure is greater than or much greater than the diameter of the semi-cylindrical structure.

[0059] When the above-mentioned grating structure 100 is assembled on the display screen 200, multiple display screens 200 in the spliced ​​display are first electrically connected to each other through the wire 210, and the wire 210 is located at the connection between the non-display areas of the two adjacent display screens 200; then the grating structure 100 is set at the connection between the non-display areas of the two adjacent display screens 200, and the orthographic projection of the grating structure 100 on the spliced ​​display covers the wire 210.

[0060] By arranging the grating structure 100 above the wire 210 at the connection of the non-display area of ​​two adjacent display screens 200, on the one hand, the grating structure 100 can fill the connection of the two adjacent display screens 200, so that the two adjacent display screens 200 are relatively flat, which is conducive to improving the flatness of the spliced ​​display screen; on the other hand, the orthographic projection of the grating structure 100 on the spliced ​​display covers the wire, that is, the grating structure 100 can cover the wire 210. At the same time, the grating structure 100 adopts a plurality of cylindrical convex lenses 20 arranged between the first transparent substrate 10 and the second transparent substrate 30, that is, That is, by adopting the first transparent substrate 10 and the second transparent substrate 30 that are translucent and the multiple cylindrical convex lenses 20 that converge light, the cylindrical convex lenses 20 can converge light, so that when the human eye looks at the grating structure 100 from the side of the second transparent substrate 30, the multiple cylindrical convex lenses 20 in the grating structure 100 can decompose the wire 210 into multiple thin lines, so that the human eye cannot distinguish the shape outline of the object located under the grating structure 100, such as the wire 210, thereby visually making the wire 210 achieve the effect of "invisibility", which is beneficial to improving the appearance consistency of the spliced ​​display screen.

[0061] It should be noted that, usually, the cylindrical convex lens 20 is fixed between the second transparent substrate 30 by an optical transparent adhesive 40. The optical transparent adhesive 40, on the one hand, serves to fix the cylindrical convex lens 20 between the first transparent substrate 10 and the second transparent substrate 30, and on the other hand, can fill the gap between the cylindrical convex lens 20, the first transparent substrate 10 and the second transparent substrate 30, so that not only the probability of the cylindrical convex lens 20 moving relative to the first transparent substrate 10 and the second transparent substrate 30 is reduced, so that the grating structure 100 is firmly connected, but also the optical transparent adhesive 40 can also play a role in allowing light to pass through, thereby reducing the impact on the light.

[0062] Embodiment 1

[0063] Embodiment 1 provides a grating structure 100 , which includes a first transparent substrate 10 , a second transparent substrate 30 , and a plurality of cylindrical convex lenses 20 .

[0064] like Figure 1 , Figure 2 and Figure 3 As shown, the first transparent substrate 10 and the second transparent substrate 30 are both glass substrates, the cylindrical convex lens 20 is a semi-cylindrical convex lens, the plane of the cylindrical convex lens 20 is bonded to the first transparent substrate 10, and the curved surface of the cylindrical convex lens 20 and the second transparent substrate 30 are filled with an optical transparent adhesive 40.

[0065] The semi-cylindrical convex lens is a convex lens in the shape of a semi-cylinder, that is, a convex lens with a semicircular cross-sectional profile.

[0066] By adopting a semi-cylindrical convex lens, the side of the cylindrical convex lens 20 includes a flat surface and a curved surface. In this way, the grating structure 100 is convenient for installing and positioning the cylindrical convex lens 20 and the first transparent substrate 10 on the basis of meeting optical requirements, thereby facilitating the improvement of the assembly accuracy and efficiency of the grating structure 100.

[0067] In the design process of the grating structure 100, the first transparent substrate 10 and the second transparent substrate 30 are made of the same material, which is conducive to reducing costs. Because the first transparent substrate 10 mainly plays the role of supporting the cylindrical convex lens 20, when selecting the thickness, the thickness of the first transparent substrate 10 is greater than or equal to the thickness of the first transparent substrate 10. In this way, the grating structure 100 not only reduces the overall thickness of the grating structure 100 on the basis of meeting the optical requirements, but also reduces the cost.

[0068] After many tests, when the thickness of the first transparent substrate 10 is 20mm-50mm and the thickness of the second transparent substrate 30 is 10mm-20mm, the wire 210 of the grating structure 100 has a better "stealth" effect, achieving the purpose of making the grating structure achieve both the "stealth" effect of the wire and the lightness and thinness.

[0069] Specifically, the thickness of the first transparent substrate 10 can be 20 mm, 21 mm, 22 mm, ... 25 mm, ... 30 mm, ... 35, ... 40 mm, ... 45, ... or 50 mm, which is not specifically limited here.

[0070] Specifically, the thickness of the second transparent substrate 30 may be 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm or 20 mm, which is not specifically limited herein.

[0071] During the design of the grating structure 100 , the focus is on determining the size parameters, arrangement quantity, and spacing distance of the cylindrical convex lenses 20 , which directly affect the overall optical effect of the grating structure 100 .

[0072] In the design process of the cylindrical convex lens 20, if the diameter of the cylindrical convex lens 20 is too small, more cylindrical convex lenses 20 need to be arranged under the condition of the same area of ​​the first transparent substrate 10, which not only makes the assembly of the grating structure 100 more complicated, but also requires relatively high assembly accuracy of the cylindrical convex lens 20 and the first transparent substrate 10 and the second transparent substrate 30. At the same time, the processing technology of the cylindrical convex lens 20 is relatively high, resulting in a high cost of the grating structure 100; if the diameter of the cylindrical convex lens 20 is too large, under the condition of the same area of ​​the first transparent substrate 10, a smaller number of cylindrical convex lenses 20 need to be arranged, which simplifies the assembly accuracy and efficiency. However, during the assembly of the grating structure 100 with the display screen 200, the requirements for the grating structure 100 are relatively high, that is, the wire 210 needs to be located near the focus of the cylindrical convex lens 20 in the grating structure 100, that is, the wire 210 is located within one focal length of the cylindrical convex lens 20, otherwise, the "stealth" effect of the grating structure 100 is poor.

[0073] By reasonably selecting the diameter of the cylindrical convex lens 20, when the diameter of the cylindrical convex lens 20 is 10mm-20mm, the grating structure 100 can meet the optical requirements, that is, achieve the "invisible" effect of the wire 210. At the same time, during the assembly process of the grating structure 100 with the display screen 200, the position of the grating structure 100 is not required, which facilitates the assembly of the grating structure 100. In addition, it is beneficial to reduce the production cost of the grating structure 100.

[0074] Figure 3 A plurality of cylindrical convex lenses 20 are shown along a first direction ( Figure 3 That is to say, when the plurality of cylindrical convex lenses 20 are arranged along the first direction, the distance between two adjacent cylindrical convex lenses 20 is equal.

[0075] By arranging a plurality of cylindrical convex lenses 20 at equal intervals along the first direction, the wires 210 located below the grating structure 100 can be arranged in lines with equal intervals, thereby achieving a better “stealth” effect.

[0076] Through multiple tests, it is found that when the interval between the two adjacent cylindrical convex lenses 20 is a preset value, which is 2mm-5mm, it is beneficial to make the wire 210 of the grating structure 100 have a better "stealth" effect.

[0077] It should be noted that when a plurality of cylindrical convex lenses 20 are arranged along the first direction, the intervals between two adjacent cylindrical convex lenses 20 may not be equal, as long as the interval between two adjacent cylindrical convex lenses 20 is a preset value. Even when a plurality of cylindrical convex lenses 20 are arranged along the first direction, a portion of the cylindrical convex lenses 20 are in contact with each other or all of the cylindrical convex lenses 20 are in contact with each other, which is not specifically limited here.

[0078] In this embodiment, in the thickness direction of the first transparent substrate 10, the thickness of the optical transparent adhesive 40 is greater than the thickness of the cylindrical convex lens 20. During the assembly of the cylindrical convex lens 20 and the first transparent substrate 10, the optical axis of the cylindrical convex lens 20 is parallel to the thickness direction of the first transparent substrate 10. The thickness of the cylindrical convex lens 20 refers to the thickness of the cylindrical convex lens 20 at the optical axis. That is, when the cylindrical convex lens 20 is a semi-cylindrical convex lens, when the thickness of the optical transparent adhesive 40 is greater than the thickness of the cylindrical convex lens 20, that is, the radius, the optical transparent adhesive 40 is higher than the top of the cylindrical convex lens 20.

[0079] Through the above arrangement, both ends of the cylindrical convex lens 20 are respectively fixed to the first transparent substrate 10 and the second transparent substrate 30 by the optical transparent adhesive 40, so that the grating structure further improves the firmness of the cylindrical convex lens 20 and the first transparent substrate 10 and the second transparent substrate 30 while meeting the optical requirements, thereby improving the reliability of the grating structure 100.

[0080] Specifically, after many tests by technical personnel, when the thickness of the optically transparent glue 40 is 20um-50um greater than the thickness of the cylindrical convex lens 20, that is, the thickness of the optically transparent glue 40 is 20um-50um higher than the top of the cylindrical convex lens 20. Specifically, the thickness of the optically transparent glue 40 can be 20um, 21um, 22um,...25um,...30um,...35um,...40um,...45um,...or 50um higher than the top of the cylindrical convex lens 20, and no specific limitation is made here.

[0081] Embodiment 2

[0082] Embodiment 2 provides a grating structure 100 . The main difference between the grating structure 100 in Embodiment 2 and the grating structure 100 in Embodiment 1 lies in the structure of the second transparent substrate 30 .

[0083] like Figure 4 and Figure 5 As shown, in some embodiments, the second transparent substrate 30 includes a base material layer 31 , an adhesive layer 32 and an anti-fingerprint layer 33 , and the base material layer 31 is close to the first transparent substrate 10 .

[0084] The anti-fingerprint layer 33 is the core, and is mainly used to achieve the anti-fingerprint effect. That is, the anti-fingerprint layer 33 reduces the surface energy, making it difficult for the grease and sweat in the fingerprint to adhere to the film surface, or even if it adheres, it can be easily wiped off.

[0085] The substrate layer 31 mainly serves to carry the anti-fingerprint layer 33. Usually, the substrate layer 31 may be made of any one or more materials such as PET, TAC, PMMA, TPU, etc., and the thickness of the substrate layer 31 may be 10 mm to 50 mm. For example, the thickness of the substrate layer 31 may be 10 mm, 11 mm, ... 15 mm, ... 20 mm, ... 30 mm, ... 40 mm, ... or 50 mm.

[0086] The above-mentioned adhesive layer 32 is located between the substrate layer 31 and the anti-fingerprint layer 33, and mainly serves to bond the anti-fingerprint layer 33 to the substrate layer 31 to ensure that the film layers are tightly bonded. The material of the adhesive layer 32 can be composed of epoxy resin, leveling agent, solvent, methyl cellulose, silane coupling agent and other components, which ensure the bonding strength while making the film layer have good flatness and smoothness. The thickness of the adhesive layer 32 can be 10um-50um. The adhesive layer 32 can be directly rolled on the substrate layer 31. For example, the thickness of the adhesive layer 32 can be 10um, 11um,...15um,...20um,...30um,...40um,...or 50um.

[0087] Specifically, Figure 4 As shown, the anti-fingerprint layer 33 includes an anti-fingerprint film 34 and a protective layer 35 . The protective layer 35 is laminated on the anti-fingerprint film 34 by molding to form the anti-fingerprint layer 33 .

[0088] The material of the anti-fingerprint film 34 is usually organic silicon compound, fluorine compound, etc. Organic silicon can form a uniform and stable coating on the surface of the film, and has good hydrophobicity; fluorine compound can further reduce the surface energy, so that the anti-fingerprint effect is better. The anti-fingerprint film 34 can be coated on the adhesive layer 32, and the thickness of the anti-fingerprint film 34 can be 30um-100um. For example, the thickness of the anti-fingerprint film 34 can be 30um,...40um,...60um,...80um,...90um,...or 100um.

[0089] Generally, the anti-fingerprint film 34 is scratched and worn in daily use. The protective layer 35 is arranged on the outside of the anti-fingerprint film 34, and mainly plays the role of protecting the anti-fingerprint film 34. The protective layer 35 can be made of PE, PET, etc., and can be the same as the substrate layer 31, with a thickness of 50um-100um, and can be formed on the functional layer by molding and laminating to form the anti-fingerprint layer 33. For example, the thickness of the protective layer 35 can be 30um,...40um,...60um,...80um,...90um,...or 100um.

[0090] The protective layer 35 is molded and bonded to the anti-fingerprint film 34 to form the anti-fingerprint layer 33, so that the protective layer 35 and the anti-fingerprint film 34 are tightly bonded, and by reasonably selecting the thickness of each film layer, the total thickness of the second transparent substrate 30 meets 10mm-20mm. In this way, not only can the grating structure 100 meet the thickness requirement, but also the optical requirement, that is, the "invisible" effect of the wire 210 is achieved.

[0091] The preparation method of the second transparent substrate 30 in this embodiment is as follows:

[0092] A bonding layer 32 is provided on the substrate layer 31;

[0093] Then, an anti-fingerprint film 34 is coated on the adhesive layer 32;

[0094] Then, a protective layer 35 is provided and laminated on the anti-fingerprint film 34 by molding, so as to form a second transparent substrate 30 with anti-fingerprint function.

[0095] It should be noted that, if substantially the same results are achieved, the method for preparing the second transparent substrate 30 is not limited to the process sequence shown in this embodiment.

[0096] It should be noted that, in this embodiment, the structure of the cylindrical convex lens 20 may be different from the structure of the cylindrical convex lens 20 in the first embodiment. Figure 4 The structure of the cylindrical convex lens 20 may also be the same as that of the cylindrical convex lens 20 in the first embodiment, such as Figure 3 As shown, no further description is given here.

[0097] In addition, the dimensions of the optically transparent adhesive 40 and the second transparent substrate 30 in the grating structure 100 are the same as those in the first embodiment, and are not described again.

[0098] Embodiment 3

[0099] Embodiment 3 provides a method for preparing a grating structure, wherein the grating structure includes a first transparent substrate 10, a second transparent substrate 30 and a plurality of cylindrical convex lenses 20, wherein the plurality of cylindrical convex lenses 20 are arranged between the first transparent substrate 10 and the second transparent substrate 30 along a first direction.

[0100] The preparation method comprises:

[0101] Arrange a plurality of cylindrical convex lenses 20 on the first transparent substrate 10 along a first direction, inject optical transparent glue 40 between adjacent cylindrical convex lenses 20, and cure by ultraviolet light;

[0102] The second transparent substrate 30 is placed on the optical transparent adhesive 40 and bonded by heat pressing or molding to form a grating structure.

[0103] It should be noted that if substantially the same results are achieved, the method for preparing the grating structure is not limited to the process sequence shown in this embodiment.

[0104] It should be noted that the grating structure described in the first embodiment can be directly prepared by adopting the above preparation method. When preparing the grating structure in the second embodiment by the above preparation method, the second transparent substrate 30 can be prepared first, and finally the prepared second transparent substrate 30 is placed on the optical transparent adhesive 40, and the grating structure described in the second embodiment is formed by hot pressing or molding.

[0105] Embodiment 4 provides a spliced ​​display comprising a plurality of display screens 200 and a grating structure 100 .

[0106] like Figure 1 , Figure 2 and Figure 6 As shown, in some embodiments, a clearance gap 220 is provided at the connection between two adjacent non-display areas, the grating structure 100 is located in the clearance gap 220, and the length direction (perpendicular to the longitudinal axis) of the cylindrical convex lens 20 of the grating structure 100 is Figure 6 The direction indicated by the arrow X in the middle) and the extension direction of the avoidance gap 220 ( Figure 1 parallel to the vertical direction in the figure.

[0107] During the assembly process of the grating structure 100 and the display screen 200, the grating structure 100 is arranged above the avoidance gap 220 of the wire material 210 at the connection of the non-display area of ​​two adjacent display screens 200. On the one hand, the grating structure 100 can fill the avoidance gap 220 at the connection of the two adjacent display screens 200, so that the two adjacent display screens 200 are relatively flat, which is conducive to improving the flatness of the spliced ​​display screen; on the other hand, when the human eye looks at the grating structure 100 from one side of the second transparent substrate 30, the grating structure 100 The plurality of cylindrical convex lenses 20 can decompose the wire 210 into a plurality of thin wires, so that the human eye cannot distinguish the shape and outline of an object located below the grating structure 100, such as the wire 210, thereby visually making the wire 210 achieve an "invisible" effect, thereby making the appearance consistency of the spliced ​​display screen better; at the same time, the length direction of the cylindrical convex lenses 20 in the grating structure 100 is usually parallel to the extension direction of the avoidance gap 220, so that when two adjacent display screens 200 are bent, the impact on the grating structure 100 located in the avoidance gap 220 is reduced.

[0108] Specifically, Figure 6 As shown, the upper surface of the second transparent substrate 30 of the grating structure 100 is flush with the upper surface of the display screen 200. In this way, the flatness of the spliced ​​display is improved, thereby improving the appearance consistency and aesthetics of the spliced ​​display, thereby improving the user experience.

[0109] It should be noted that, in this embodiment, the structure of the grating structure 100 is the same as the structure of the grating structure 100 in the first embodiment or the second embodiment, and will not be described in detail herein.

[0110] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A grating structure for a spliced ​​display, the spliced ​​display comprising a plurality of display screens (200), two adjacent display screens (200) being electrically connected via a wire (210), the wire (210) being located at a connection between non-display areas of the two adjacent display screens (200), characterized in that: The grating structure (100) is arranged at the connection of the non-display areas of two adjacent display screens (200); the orthographic projection of the grating structure (100) on the spliced ​​display covers the wire (210); the grating structure (100) comprises: a first transparent substrate (10), a second transparent substrate (30) and a plurality of cylindrical convex lenses (20); the first transparent substrate (10) is close to the wire (210); and the plurality of cylindrical convex lenses (20) are arranged between the first transparent substrate (10) and the second transparent substrate (30) along a first direction; The first direction, the length direction of the cylindrical convex lens (20) and the thickness direction of the first transparent substrate (10) are perpendicular to each other.

2. The grating structure according to claim 1, characterized in that The cylindrical convex lens (20) is a semi-cylindrical convex lens, the plane of the cylindrical convex lens (20) is in contact with the first transparent substrate (10), and the curved surface of the cylindrical convex lens (20) and the second transparent substrate (30) are filled with an optically transparent adhesive (40).

3. The grating structure according to claim 1, characterized in that The plurality of cylindrical convex lenses (20) are arranged at intervals along the first direction, and the interval between two adjacent cylindrical convex lenses (20) is a preset value.

4. The grating structure according to claim 3, characterized in that The plurality of cylindrical convex lenses (20) are arranged at equal intervals along the first direction.

5. The grating structure according to claim 1, characterized in that The cylindrical convex lens (20) is fixed between the first transparent substrate (10) and the second transparent substrate (30) by means of an optically transparent adhesive (40); in the thickness direction of the first transparent substrate (10), the thickness of the optically transparent adhesive (40) is greater than the thickness of the cylindrical convex lens (20).

6. The grating structure according to any one of claims 1 to 5, characterized in that: The first transparent substrate (10) and the second transparent substrate (30) are made of the same material; And / or, the thickness of the first transparent substrate (10) is greater than or equal to the thickness of the second transparent substrate (30).

7. The grating structure according to any one of claims 1 to 5, characterized in that: The second transparent substrate (30) comprises a base material layer (31), an adhesive layer (32) and an anti-fingerprint layer (33), and the base material layer (31) is close to the first transparent substrate (10).

8. The grating structure according to claim 7, characterized in that The anti-fingerprint layer (33) comprises an anti-fingerprint film (34) and a protective layer (35), and the protective layer (35) is laminated on the anti-fingerprint film (34) by molding to form the anti-fingerprint layer (33).

9. The grating structure according to any one of claims 3 to 5 and 8, characterized in that: The diameter of the cylindrical convex lens (20) is 10 mm-20 mm, and the preset value is 20 um-50 um.

10. A method for preparing a grating structure, the grating structure comprising a first transparent substrate (10), a second transparent substrate (30) and a plurality of cylindrical convex lenses (20), the plurality of cylindrical convex lenses (20) being arranged between the first transparent substrate (10) and the second transparent substrate (30) along a first direction, characterized in that: The preparation method comprises: Arranging a plurality of cylindrical convex lenses (20) on the first transparent substrate (10) along a first direction, injecting an optically transparent glue (40) between adjacent cylindrical convex lenses (20), and curing the glue by irradiation with an ultraviolet lamp; The second transparent substrate (30) is arranged on the optically transparent adhesive (40) and bonded by hot pressing or molding to form the grating structure.

11. A spliced ​​display, characterized in that: include: A plurality of display screens (200), wherein two adjacent display screens (200) are electrically connected via a wire (210), and the wire (210) is located at a connection point between non-display areas of the two adjacent display screens (200); The grating structure (100) according to any one of claims 1 to 9, wherein the grating structure (100) is arranged at the connection between the non-display areas of two adjacent display screens (200), and the orthographic projection of the grating structure (100) on the spliced ​​display covers the wire (210).

12. The spliced ​​display according to claim 11, characterized in that: A avoidance gap (220) is provided at the connection between the non-display areas of two adjacent display screens (200), the grating structure (100) is located in the avoidance gap (220), and the length direction of the cylindrical convex lens (20) of the grating structure (100) is parallel to the extension direction of the avoidance gap (220).

13. The spliced ​​display according to claim 11 or 12, characterized in that: The upper surface of the second transparent substrate (30) of the grating structure (100) is flush with the upper surface of the display screen (200).

Images