Backboard of interaction panel and interaction panel
The back panel design with crosswise ribs and honeycomb reinforcement structure addresses the issue of deformation in thin interactive panels by enhancing rigidity and bending resistance.
Patent Information
- Application Number
- CN202420358836.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-02-26
AI Technical Summary
The thinning of back panels in interactive panels leads to easy deformation under stress, compromising structural rigidity.
A back panel design featuring crosswise reinforcing ribs and protruding reinforcement parts, along with a staggered honeycomb-shaped reinforcement structure, enhances structural rigidity and prevents deformation.
The design effectively reinforces the back panel's structural rigidity, preventing deformation and improving bending resistance, while maintaining a thin profile.
Smart Images
Figure CN222283633U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of display technology, and in particular to a backplane of an interactive panel and an interactive panel. Background Art
[0002] In the interactive panel, the back panel is a part of the structural frame of the interactive panel, and is used to provide protection for the electronic devices in the interactive panel.
[0003] However, in the related art, in order to reduce the overall thickness of the interactive panel, the back panel is generally made thinner, which makes the back panel easily deformed by stress. Utility Model Content
[0004] The present application provides a back plate of an interactive panel and an interactive panel, which can enhance the structural rigidity of the back plate and make the back plate less likely to be deformed by force.
[0005] In a first aspect, the present application provides a back panel of an interactive panel, the back panel comprising: a panel body having an inner side surface and an outer side surface arranged opposite to the inner side surface; a first reinforcing structure arranged on the inner side surface of the panel body, the first reinforcing structure comprising a first reinforcing rib and a second reinforcing rib, the first reinforcing rib and the second reinforcing rib being arranged crosswise to divide the inner side surface into a plurality of areas to be reinforced; a second reinforcing structure arranged on the inner side surface of the panel body, the second reinforcing structure comprising a plurality of reinforcing parts, the plurality of reinforcing parts being distributed in the area to be reinforced, and the reinforcing parts protruding in a direction away from the outer side surface.
[0006] In some embodiments of the present application, both ends of the first reinforcing rib extend to the edge of the plate, and both ends of the second reinforcing rib extend to the edge of the plate, so that the edge of the plate can be reinforced to prevent deformation of the edge of the plate.
[0007] In some embodiments of the present application, the reinforcing portion includes a top surface and a peripheral side surface, and the two ends of the peripheral side surface are connected to the top surface and the inner side surface respectively; wherein the peripheral side surface extends obliquely from the top surface toward the inner side surface and away from the center of the reinforcing portion. The corners of the reinforcing portion are made non-right angles, so that the corners of the reinforcing portion can be prevented from being torn due to stress concentration when the reinforcing portion is formed by stamping.
[0008] In some embodiments of the present application, the two ends of the peripheral side surface are respectively connected to the top surface and the inner side surface by arc transition, so as to further reduce the stress concentration at each corner of the reinforcement part and prevent the corners of the reinforcement part from being torn due to stress concentration when the reinforcement part is formed by stamping.
[0009] In some embodiments of the present application, at least part of the cross-section of the reinforcement portion is hexagonal, so that the second reinforcement structure is generally honeycomb-shaped, which can improve the structural strength and stability of the second reinforcement structure.
[0010] In some embodiments of the present application, at least part of the cross-section of the reinforcement portion is in the shape of a regular hexagon, which can further improve the structural strength and stability of the second reinforcement structure.
[0011] In some embodiments of the present application, the second reinforcement structure includes a plurality of reinforcement groups staggered along a first preset direction, each of the reinforcement groups includes a plurality of reinforcement parts spaced apart along a second preset direction, and the second preset direction intersects the first preset direction, so as to improve the bending resistance of the area to be reinforced and prevent bending and deformation of the area to be reinforced.
[0012] In some embodiments of the present application, the first reinforcement group among the plurality of reinforcement groups includes a first reinforcement part and a second reinforcement part adjacent to the first reinforcement part, and the second reinforcement group among the plurality of reinforcement groups includes a third reinforcement part, the first reinforcement group is adjacent to the second reinforcement group, and the third reinforcement part is adjacent to the first reinforcement part and the second reinforcement part; wherein, on a plane perpendicular to the first preset direction, there is a first gap between the projection of the first reinforcement part and the projection of the second reinforcement part, and the projection of the third reinforcement part covers the first gap. The bending resistance at the first gap can be improved to prevent bending and deformation in the area to be reinforced.
[0013] In some embodiments of the present application, the third reinforcement group, the fourth reinforcement group and the fifth reinforcement group of the plurality of reinforcement groups are arranged in sequence; wherein, on a plane perpendicular to the second preset direction, there is a second gap between the projection of the third reinforcement group and the projection of the fifth reinforcement group, and the projection of the fourth reinforcement group covers the second gap. The bending resistance at the second gap can be improved to prevent bending and deformation in the area to be strengthened.
[0014] In a second aspect, the present application further provides an interactive panel, comprising a display screen and a back panel as described in any of the above embodiments, wherein the back panel is located on the back side of the display screen, and the inner side surface of the back panel faces the display screen.
[0015] The beneficial effects of the present application are: the overall structural rigidity of the plate body is reinforced by the first reinforcing ribs and the second reinforcing ribs in the first reinforcing structure to ensure the overall structural rigidity of the plate body, and at the same time a large number of reinforcing parts are arranged in the area to be reinforced where the first reinforcing structure is not arranged, and the part of the plate body located in the area to be reinforced is reinforced by the reinforcing parts, so that the part of the plate body located in the area to be reinforced also has sufficient structural rigidity, which can effectively enhance the structural rigidity of the plate body and prevent deformation of the back panel. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 This is a schematic structural diagram of a back plate in a first viewing angle in an embodiment of the present application;
[0018] Figure 2 This is a schematic structural diagram of a back plate in a second viewing angle in an embodiment of the present application;
[0019] Figure 3 This is a partial structural schematic diagram of a backplane in one embodiment of the present application;
[0020] Figure 4 Schematic diagram of the structure of the reinforcement part in one embodiment of the present application.
[0021] Reference numerals:
[0022] 10. Plate body; 11. Inner side surface; 111. Area to be reinforced; 12. Outer side surface; 20. First reinforcement structure; 21. First reinforcement rib; 22. Second reinforcement rib; 23. Auxiliary reinforcement rib; 30. Second reinforcement structure; 31. Reinforcement part; 311. Top surface; 312. Side surface; 32. First reinforcement group; 321. First reinforcement part; 322. Second reinforcement part; 33. Second reinforcement group; 331. Third reinforcement part; 34. Third reinforcement group; 35. Fourth reinforcement group; 36. Fifth reinforcement group; L1. First gap; L2. Second gap. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0024] The present application provides a back plate of an interactive panel and an interactive panel to solve the problem in the related art that in order to reduce the overall thickness of the interactive panel, the back plate is generally made thinner, which causes the back plate to be easily deformed by force.
[0025] In a first aspect, the present application provides a back panel of an interactive panel, such as Figure 1 and Figure 2As shown, the back plate includes a plate body 10, a first reinforcement structure 20 and a second reinforcement structure 30. The back plate can be applied to an interactive panel. As a part of the structural frame of the interactive panel, the back plate plays the role of covering, protecting and bearing the interactive panel.
[0026] The plate body 10 has an inner side surface 11 and an outer side surface 12 (eg, Figure 4 ); the plate body 10 is the main structure of the back panel, the inner side surface 11 is a surface of the plate body 10, the inner side surface 11 refers to the side surface of the plate body 10 that cannot be observed by the user when the back panel is applied to the interactive panel; the outer side surface 12 refers to the appearance surface of the plate body 10 that can be observed by the user when the back panel is applied to the interactive panel; the overall shape of the plate body 10 can be rectangular, square, circular or other shapes, and the present application does not impose specific restrictions on the shape of the plate body 10; the plate body 10 can be a plate formed of a steel plate, a plastic plate or other materials. When the plate body 10 is a steel plate, the plate body 10 can be formed by stamping. The material of the plate body 10 can be ordinary carbon steel, high-quality carbon structural steel, alloy structural steel, carbon tool steel, stainless steel, spring steel or electrical silicon steel, and the thickness of the plate body 10 can be 0.2 mm to 4 mm. Thin steel plates are widely used in automobiles, aviation, shipbuilding, electrical, machinery, construction, home appliances and other fields. Sheets are delivered directly after rolling, pickled (pickled sheets), galvanized or tinned.
[0027] The first reinforcement structure 20 is arranged on the inner side surface 11 of the plate body 10, and the first reinforcement structure 20 includes a first reinforcement rib 21 and a second reinforcement rib 22. The first reinforcement rib 21 and the second reinforcement rib 22 are arranged crosswise to divide the inner side surface 11 into a plurality of areas to be reinforced 111. The first reinforcement rib 21 and the second reinforcement rib 22 can be arranged crosswise vertically, and the first reinforcement rib 21 and the second reinforcement rib 22 can also crosswise form an angle of other angles, for example, an angle of 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees or other angles.
[0028] The second reinforcement structure 30 is disposed on the inner side surface 11 of the plate body 10 . The second reinforcement structure 30 includes a plurality of reinforcement portions 31 . The plurality of reinforcement portions 31 are distributed in the area to be reinforced 111 , and the reinforcement portions 31 protrude in a direction away from the outer side surface 12 .
[0029] It is understandable that the thickness of the back panel is generally large, so the back panel is easily deformed by dents, bends or warps under the action of impact force or bending stress, especially for large-sized back panels, which are more prone to deformation.
[0030] In the present application, the overall structural rigidity of the plate body 10 is reinforced by the first reinforcing ribs 21 and the second reinforcing ribs 22 in the first reinforcing structure 20 to ensure the overall structural rigidity of the plate body 10. At the same time, a large number of reinforcing parts 31 are arranged in the area to be reinforced 111 where the first reinforcing structure 20 is not arranged. The reinforcing parts 31 are used to reinforce the portion of the plate body 10 located in the area to be reinforced 111, so that the portion of the plate body 10 located in the area to be reinforced 111 also has sufficient structural rigidity, which can effectively enhance the structural rigidity of the plate body 10 and prevent deformation of the back panel.
[0031] Specifically, see Figure 1 and Figure 2 As shown, both ends of the first reinforcing rib 21 can extend to the edge of the plate body 10, and both ends of the second reinforcing rib 22 can extend to the edge of the plate body 10, so that the first reinforcing rib 21 and the second reinforcing rib 22 can reinforce the edge of the plate body 10 to prevent the edge of the plate body 10 from deformation.
[0032] It should also be noted that the width of the first reinforcing rib 21 and the second reinforcing rib 22 can be 25 mm to 50 mm, and the thickness can be 6 mm to 10 mm, so that the first reinforcing rib 21 and the second reinforcing rib 22 have a larger size, which can ensure the overall structural rigidity of the plate body 10; the first reinforcing rib 21 and the second reinforcing rib 22 can be arranged vertically to form a "cross" shaped structure, and the first reinforcing rib 21 and the second reinforcing rib 22 can also form an angle of 30 degrees, 45 degrees, 60 degrees, 75 degrees or other angles to form an "X" shaped structure; the number of the first reinforcing rib 21 can be 1, 2 or more, and the number of the second reinforcing rib 22 can be 1, 2 or more, and the present application does not make any specific restrictions.
[0033] Continue to see Figure 1 and Figure 2 As shown, in one embodiment of the present application, the first reinforcement structure 20 may further include auxiliary reinforcement ribs 23 arranged in the area to be reinforced 111, and the extension direction of the auxiliary reinforcement ribs 23 is parallel to or intersects with the extension direction of the first reinforcement ribs 21 and the extension direction of the second reinforcement ribs 22 to further improve the structural stiffness of the area to be reinforced 111.
[0034] Specifically, see Figure 2 and Figure 3 As shown, each area to be reinforced 111 may be provided with a reinforcement portion 31, so that the portion of the plate body 10 located in each area to be reinforced 111 may be reinforced, thereby further improving the overall structural strength of the plate body 10. Furthermore, in each area to be reinforced 111, a plurality of reinforcement portions 31 may form a mesh-like protrusion structure that intersects each other, and the mesh-like protrusion structure has good structural strength, which may further improve the overall structural strength of the plate body 10.
[0035] like Figure 2 and Figure 3 As shown, in some embodiments of the present application, the second reinforcement structure 30 includes a plurality of reinforcement groups arranged in a staggered manner along the first preset direction XX, each reinforcement group includes a plurality of reinforcement portions 31 arranged in a staggered manner along the second preset direction YY, and the second preset direction YY intersects with the first preset direction XX. The second preset direction YY may be perpendicular to the first preset direction XX, and the second preset direction YY may also form an angle of 30 degrees, 45 degrees, 60 degrees, 75 degrees or other angles with the first preset direction XX.
[0036] It can be understood that by staggering the plurality of reinforcement groups along the first preset direction XX, the reinforcement portions 31 in the reinforcement groups are formed as follows: Figure 3 The grid-shaped second reinforcement structure 30 shown in the figure makes it possible for one or more reinforcement parts 31 to exist on the extension path of the bending line when the plate body 10 is bent around the first preset direction XX at any position of the area to be reinforced 111, thereby improving the bending resistance of the area to be reinforced 111 and preventing the area to be reinforced 111 from bending and deformation.
[0037] Further, the first reinforcement group 32 among the multiple reinforcement groups includes a first reinforcement portion 321 and a second reinforcement portion 322 adjacent to the first reinforcement portion 321, and the second reinforcement group 33 among the multiple reinforcement groups includes a third reinforcement portion 331, the first reinforcement group 32 is adjacent to the second reinforcement group 33, and the third reinforcement portion 331 is adjacent to the first reinforcement portion 321 and the second reinforcement portion 322; wherein, on a plane perpendicular to the first preset direction XX, there is a first gap L1 between the projection of the first reinforcement portion 321 and the projection of the second reinforcement portion 322, and the projection of the third reinforcement portion 331 covers the first gap L1.
[0038] It can be understood that the first reinforcement group 32 can be any one of the multiple reinforcement groups, the second reinforcement group 33 is a reinforcement group among the multiple reinforcement groups that is adjacent to the first reinforcement group 32; the first reinforcement portion 321 is any one of the multiple reinforcement portions 31 of the first reinforcement group 32, the first reinforcement portion 321 is any one of the multiple reinforcement portions 31 of the first reinforcement group 32, the second reinforcement portion 322 is a reinforcement portion 31 among the multiple reinforcement portions 31 of the first reinforcement group 32 that is adjacent to the first reinforcement portion 321, and the third reinforcement portion 331 is a reinforcement portion 31 among the multiple reinforcement portions 31 of the second reinforcement group 33 that is adjacent to both the first reinforcement portion 321 and the second reinforcement portion 322.
[0039] It should also be noted that, in this embodiment, the first gap L1 is covered by the third reinforcement part 331, so that when the plate body 10 is bent around the first preset direction XX and the bending line is located at the first gap L1, one or more reinforcement parts 31 will exist on the extension path of the bending line, which can improve the bending resistance at the first gap L1 and prevent bending deformation of the area to be reinforced 111. It should also be noted that the spacing of the first gaps L1 in each reinforcement group can be the same or different, and this application does not limit it.
[0040] Continue to see Figure 2 and Figure 3 As shown, in some embodiments of the present application, the third reinforcement group 34, the fourth reinforcement group 35 and the fifth reinforcement group 36 in the multiple reinforcement groups are arranged in sequence, wherein, on a plane perpendicular to the second preset direction YY, there is a second gap L2 between the projection of the third reinforcement group 34 and the projection of the fifth reinforcement group 36, and the projection of the fourth reinforcement group 35 covers the second gap L2.
[0041] It can be understood that the third reinforcement group 34 can be any reinforcement group among the multiple reinforcement groups, the third reinforcement group 34 can be the same as or different from the first reinforcement group 32, the third reinforcement group 34 can be the same as or different from the second reinforcement group 33, the fourth reinforcement group 35 is a reinforcement group among the multiple reinforcement groups adjacent to the third reinforcement group 34, and the fifth reinforcement group 36 is a reinforcement group among the multiple reinforcement groups adjacent to the fourth reinforcement group 35.
[0042] It should also be noted that, in this embodiment, the second gap L2 is covered by the fourth reinforcement group 35, so that when the plate body 10 is bent around the second preset direction YY and the bending line is located at the second gap L2, one or more reinforcement parts 31 will exist on the extension path of the bending line, which can improve the bending resistance at the second gap L2 and prevent bending deformation of the area to be reinforced 111. It should also be noted that the spacing of the second gap L2 between any two adjacent reinforcement groups can be the same or different, and this application does not limit it.
[0043] Specifically, the gap between any two adjacent reinforcements 31 is recessed toward the outer side surface 12 , and the gap is arranged around the circumference of the reinforcement 31 to form a honeycomb-shaped recessed structure, which can enhance the structural strength of the gap between the reinforcements 31 .
[0044] like Figure 4 As shown, in some embodiments of the present application, the reinforcing portion 31 includes a top surface 311 and a peripheral side surface 312, and the two ends of the peripheral side surface 312 are respectively connected to the top surface 311 and the inner side surface 11; wherein the peripheral side surface 312 extends obliquely from the top surface 311 toward the direction close to the inner side surface 11 and toward a direction away from the center of the reinforcing portion 31.
[0045] It should be noted that the plate body 10 is generally formed by a stamping process. In order to reduce the processing technology of the back plate and reduce the production cost of the back plate, the reinforcing portion 31 can also be stamped, so that the reinforcing portion 31 can be formed together in the process of stamping the plate body 10, without increasing the processing technology of the back plate, and without increasing the material cost and mold cost, thereby reducing the production cost of the back plate. In this embodiment, by designing the peripheral side surface 312 of the reinforcing portion 31 as an inclined surface, the shape of the longitudinal section of the reinforcing portion 31 (i.e., the surface perpendicular to the top surface 311) is designed to be roughly in the shape of a regular trapezoid, so that the various corners of the reinforcing portion 31 are non-right angles, which can prevent the various corners of the reinforcing portion 31 from being torn due to stress concentration when the reinforcing portion 31 is stamped.
[0046] It should also be noted that the size of the top surface 311, the height of the top surface 311 and the inclination of the surrounding side surface 312 can be selected according to actual needs. For example, taking the top surface 311 as a regular hexagon, the side length of the top surface 311 can be 50 mm, the width of the top surface 311 can be 10 mm, the height of the top surface 311 can be 4 mm, and the angle formed by the surrounding side surface 312 and the inner side surface 11 can be 70 degrees. Of course, according to actual needs, the size of the top surface 311, the height of the top surface 311 and the inclination of the surrounding side surface 312 can also be other values.
[0047] In one embodiment of the present application, the two ends of the peripheral side surface 312 are respectively connected to the top surface 311 and the inner side surface 11 by an arc transition, which can further reduce the stress concentration at the corners of the reinforcement portion 31 and prevent the corners of the reinforcement portion 31 from being torn due to stress concentration when the reinforcement portion 31 is formed by stamping.
[0048] like Figure 3 and Figure 4 As shown, in some embodiments of the present application, the cross-section of at least part of the reinforcing portion 31 may be in the shape of a hexagon, so that the second reinforcing structure 30 as a whole is roughly honeycomb-shaped. It can be understood that the hexagon has good structural stability, which can improve the structural strength and stability of the second reinforcing structure 30, thereby playing a better reinforcing role for the plate body 10; in addition, the hexagon has three sides extending in different directions, so that the reinforcing portion 31 can provide reinforcement for the plate body 10 in a direction perpendicular to each side of the hexagon, that is, the reinforcing portion 31 can provide reinforcement for the plate body 10 in three different directions, which can improve the bending resistance of the plate body 10 in multiple directions. It should also be noted that only part of the reinforcing portion 31 may have a hexagonal cross-section, and the cross-section of the remaining reinforcing portion 31 may be in other shapes, such as a pentagon, a quadrilateral, a rhombus or a triangle; of course, the cross-section of all reinforcing portions 31 may also be in the shape of a hexagon.
[0049] Further, the cross-section of at least part of the reinforcement part 31 is in the shape of a regular hexagon. It is understandable that, compared with other shapes, the regular hexagon has extremely strong stability, which can further improve the structural strength and stability of the second reinforcement structure 30. It should also be noted that the cross-section of all reinforcement parts 31 can be set to a regular hexagon, or the cross-section of part of the reinforcement part 31 can be set to a regular hexagon, while the cross-section of other reinforcement parts 31 can be set to a non-regular hexagon.
[0050] In a second aspect, based on the above-mentioned backplane, the present application also provides an interactive panel, which includes a display screen and a backplane as in any one of the above-mentioned embodiments, wherein the backplane is located on the back side of the display screen, and the inner side surface 11 of the backplane faces the display screen.
[0051] Among them, the display screen can be an LCD, OLED, QLED, Mini LED or Micro LED display screen, and the back side of the display screen refers to the side opposite to the display surface of the display screen.
[0052] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A back panel of an interactive panel, characterized in that: The back plate comprises: A plate body having an inner side surface and an outer side surface disposed opposite to the inner side surface; A first reinforcing structure is arranged on the inner side surface of the plate body, the first reinforcing structure comprises a first reinforcing rib and a second reinforcing rib, the first reinforcing rib and the second reinforcing rib are arranged crosswise to divide the inner side surface into a plurality of areas to be reinforced; The second reinforcement structure is arranged on the inner side surface of the plate body, and the second reinforcement structure includes a plurality of reinforcement parts, the plurality of reinforcement parts are distributed in the area to be reinforced, and the reinforcement parts protrude in a direction away from the outer side surface.
2. The back panel of the interactive panel according to claim 1, characterized in that: Both ends of the first reinforcing rib extend to the edge of the plate body, and both ends of the second reinforcing rib extend to the edge of the plate body.
3. The back panel of the interactive panel according to claim 1, characterized in that: The reinforcing portion includes a top surface and a peripheral side surface, and two ends of the peripheral side surface are respectively connected to the top surface and the inner side surface; The peripheral side surface is inclinedly extended from the top surface toward a direction close to the inner side surface and away from a center of the reinforcement portion.
4. The back panel of the interactive panel according to claim 3, characterized in that: The two ends of the peripheral side surface are respectively connected to the top surface and the inner side surface in a circular arc transition.
5. The back panel of the interactive panel according to claim 1, characterized in that: A cross section of at least a portion of the reinforcement portion is hexagonal in shape.
6. The back panel of the interactive panel according to claim 5, characterized in that: The cross section of at least part of the reinforcement portion is in the shape of a regular hexagon.
7. The back panel of the interactive panel according to claim 1, characterized in that: The second reinforcement structure includes a plurality of reinforcement groups staggeredly arranged along a first preset direction, each of the reinforcement groups includes a plurality of reinforcement portions spaced apart along a second preset direction, and the second preset direction intersects with the first preset direction.
8. The back panel of the interactive panel according to claim 7, characterized in that: A first reinforcement group among the plurality of reinforcement groups includes a first reinforcement portion and a second reinforcement portion adjacent to the first reinforcement portion, and a second reinforcement group among the plurality of reinforcement groups includes a third reinforcement portion, the first reinforcement group is adjacent to the second reinforcement group, and the third reinforcement portion is adjacent to the first reinforcement portion and the second reinforcement portion; Wherein, on a plane perpendicular to the first preset direction, there is a first gap between the projection of the first reinforcing portion and the projection of the second reinforcing portion, and the projection of the third reinforcing portion covers the first gap.
9. The back panel of the interactive panel according to claim 7, characterized in that: The third reinforcement group, the fourth reinforcement group and the fifth reinforcement group of the plurality of reinforcement groups are arranged in sequence; Wherein, on a plane perpendicular to the second preset direction, there is a second gap between the projection of the third reinforcement group and the projection of the fifth reinforcement group, and the projection of the fourth reinforcement group covers the second gap.
10. An interactive panel, characterized in that: It comprises a display screen and a back plate as claimed in any one of claims 1 to 9, wherein the back plate is located on the back side of the display screen, and the inner side surface of the back plate faces the display screen.