A curved display screen and a steel plate size design method thereof

Abstract

This invention discloses a curved display screen and its steel plate size design method, belonging to the field of LED display screen technology. The invention includes: S1, dividing the curved surface into several independent display modules using latitude and longitude lines according to a preset radius; S2, determining the geometric parameters of the display modules and the curved steel plate capable of housing multiple display modules; S3, flattening the curved steel plate into a flat steel plate, and completing the structural design of the curved steel plate based on the geometric parameters of the display modules; S4, verifying the completed structural design of the steel plate. If the verification is satisfactory, the steel plate size is determined; if the verification fails, the steel plate design parameters are adjusted until the verification is satisfactory. This invention adopts a scheme of first processing a flat steel plate adapted to complex curved surfaces such as spheres, eliminating the need to develop expensive stamping dies and separate molds for various curvatures, significantly reducing production costs; it also avoids the difficulties of stamping and bending complex curved steel plates, facilitating control of processing accuracy.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to a curved display screen and a method for designing the dimensions of its steel plate. Background Technology

[0002] With the rapid development of technology, the market demand for creative displays, especially dome displays and other complex-shaped curved LED displays, is increasing. These displays are widely used in commercial exhibitions, performances, and public spaces due to their unique visual effects and interactivity. However, the complexity of design and manufacturing presents significant challenges to designers and manufacturers in realizing these creative displays.

[0003] Traditional displays typically use standard sheet metal enclosures, see Figure 1 The display modules 1 are arranged in an array on the sheet metal housing 2. However, for the complex shape of curved displays, directly using conventional sheet metal housings would significantly increase costs and present numerous technical difficulties during manufacturing. Specifically, steel plates with corresponding curvatures need to be made for complex shapes such as curved surfaces, which not only requires high stamping die costs but also necessitates consideration of the risk of damage during transportation, thus limiting practical applications.

[0004] For the reasons mentioned above, the most common practice in the market is to use, for example... Figure 2 The installation structure shown uses a single-layer flat steel plate 4 and a steel frame keel 5 for installation, with the display module 1 mounted on the steel plate 4 via fasteners 3. While this method simplifies the manufacturing process, some problems remain. In particular, because the flat steel plate is not stamped, it often cannot perfectly fit curved surfaces in actual installation projects. This mismatch not only causes difficulties during installation but also, due to internal stress, can lead to deformation of the steel plate, affecting the installation quality of the display module and consequently the performance and stability of the entire display screen.

[0005] Therefore, there is an urgent need for a new design and manufacturing method to solve the problem of dimensional segmentation of steel plates for curved displays, reduce manufacturing costs, ensure that the steel plates can better adapt to the complex shape of the target display during transportation and installation, and overcome the installation difficulties and potential performance problems caused by directly using flat steel plates. Summary of the Invention

[0006] 1. The technical problem that the invention aims to solve In view of the problems existing in the prior art, the present invention provides a curved display screen and a method for designing the dimensions of its steel plate. This invention targets curved display screens, first dividing the curved surface into standardized LED display modules using latitude and longitude lines based on the radius of curvature, and then determining the geometric parameters of the display modules and the curved steel plate on which multiple display modules can be installed. Through the design method of this invention, the curved steel plate is flattened into a planar steel plate, and then the structure of the steel plate is designed according to the geometric parameters of the display modules. This is an efficient, economical, and feasible method for flattening curved steel plates.

[0007] 2. Technical Solution To achieve the above objectives, the technical solution provided by the present invention is as follows: The present invention provides a method for designing the dimensions of a curved display screen steel plate, comprising the following steps: Step S1: Based on the preset surface radius, the surface is divided using latitude and longitude lines to obtain several independent LED display modules; Step S2: Determine the geometric parameters of the LED display module and the curved steel plate on which multiple LED display modules can be installed; Step S3: Flatten the curved steel plate into a flat steel plate, and complete the structural design of the curved steel plate according to the geometric parameters of the LED display module; Step S4: Verify the steel plate after the structural design is completed. If the verification is qualified, determine the steel plate size. If the verification is unqualified, adjust the steel plate design parameters until the verification is qualified.

[0008] Furthermore, the methods for dividing latitude and longitude lines in step S1 include: At a preset angle along the latitude direction α Set up several parallel planes to divide the arc surface at equal angles. m In the meridian direction at a preset angle β Set up several meridian planes to divide the arc surface at equal angles. n The individual segments after division constitute an LED display module.

[0009] Furthermore, the determination of the geometric parameters of the curved steel plate in step S2 includes: The preset row number of the bottommost LED display module on a single steel plate is [number]. i The row number of the topmost LED display module is j Combined with surface radius R 1. Arc height of LED display module a and arc width b Determine the latitude segmentation angle of the display module. α meridian dividing angle β And the number of display modules in height e and width corresponding to a single steel plate. f ; Further determine the weft section angle of the steel plate i Steel plate warp dividing angle l Steel plate height h ; At the same time, determine the horizontal angles corresponding to the lower, middle, and upper edges of the steel plate cutting position. s l , s m , s u ; Radius of the lower, middle and upper edges R 2. R 3. R 4. and the length dimensions of the lower, middle, and upper edges. l 1. l 2. l 3.

[0010] Furthermore, the method of flattening the curved steel plate into a flat steel plate in step S3 includes: Adhering to the principle of ensuring the length of the central crosshair, the curved steel plate is cut according to the length of the centerline at the cutting position of the steel plate. l The length of 2 is divided into several miniature curved surfaces, each of which is approximately an isosceles trapezoid. All the isosceles trapezoids are spliced ​​together along the waistline to transform them into a planar steel plate outline structure.

[0011] Furthermore, in step S3, the curved steel plate is divided into equal parts along the height direction; the curved steel plate is divided into q curved strips along the height, and the height Δ of each curved strip is obtained. h Angle Δ s , strip lower edge angle s k Length of the lower edge of the strip Length of the upper edge of the strip Calculate the local oblique angle corresponding to each curved surface strip. c k and the global bevel angle of the overall curved steel plate c .

[0012] Furthermore, in step S3, the length of the lower edge of the flattened steel plate is... l 4, radius is R 6; the length of the middle line is l 5, radius is R 5; the length of the upper edge is l 6, radius is R 7; The included angle between the left and right sides is 100°. c The height is h The corresponding geometric relationship is: l 5= l 2=λ· R 3;R 5= l 5 / γ; R 6= R 5+ h / 2; R 7= R 5- h / 2; l 4=γ· R 6; l 6=γ· R 7.

[0013] Furthermore, the steel plate structure design in step S3 includes the theoretical outline design of the steel plate, the design of the installation ribs, and the design of the openwork area: After determining the theoretical contour data of the steel plate, the mounting ribs of the LED display module are arranged according to the position of the magnet base of the LED display module, based on the distance from the magnet base to the edge of the display module. D and preset safe distance d Determine the width of the installation ribs; designate the area of ​​the steel plate outside the installation ribs as a hollow area, and simultaneously reserve a manufacturing compensation value Δ by shrinking inwards from the outermost part of the steel plate. d .

[0014] Furthermore, the process of verifying the steel plate in step S4 includes: Determine the compression amount of the entire steel plate δl Corresponding display module width quantity f The critical compression amount of the steel plate corresponding to the single-column display module δl cr ; Obtain the difference between the length of the bottom edge of the flattened steel plate and the length of the bottom edge of the original curved surface. δl lower Obtain the difference between the length of the edge of the flattened steel plate and the length of the edge of the original curved surface. δl upper ;check δl lower , δl upper All meet δl≤δ l cr · f Only if the conditions are met can the verification be considered successful.

[0015] Furthermore, if δl lower and δl upper If any value fails to meet the verification criteria, adjust the height (e) and width (e) of the LED display modules installed on a single steel plate. f To adjust the steel plate size and reduce the steel plate compression. δl The algorithm iterates until the condition is met. δl≤δl cr ·f The conditions have been met and the verification is satisfactory.

[0016] The present invention provides a curved display screen, comprising a steel plate prepared by the design method described above, wherein a plurality of LED display modules are arranged on the steel plate, and the steel plate is provided with mounting ribs for matching magnet seats and a hollow area.

[0017] 3. Beneficial effects Compared with the prior art, the technical solution provided by this invention has the following advantages: (1) Traditional displays generally adopt conventional sheet metal cabinet structures. For hyperbolic and complex spherical displays, if the cabinet is directly customized for processing, it will not only significantly increase the production cost, but also create a lot of technical problems in the manufacturing and transportation process. The present invention adopts a solution of first processing flat steel plates adapted to complex curved surfaces such as spheres. It does not require the development of expensive stamping dies or the opening of separate molds for various curvatures. It has significant economic advantages in small-batch and customized application scenarios, and the production cost is greatly reduced. At the same time, it avoids the process problems of stamping and bending of complex curved steel plates, which makes it easier to control the processing accuracy, improve the overall production efficiency, and significantly reduce the manufacturing and processing difficulty.

[0018] (2) By processing and matching the complex curved surfaces such as spheres, the present invention can reduce the complex sheet metal splicing structure, alleviate the stress concentration phenomenon of components, avoid deformation during processing and assembly, effectively improve the structural reliability and production yield of the product; and achieve lightweight processing of components. After the sheet is flattened, there are no special irregular structures, and it is not easy to be damaged during transportation. The product has stronger on-site installation and adaptation capabilities, making transportation and on-site installation operations safer and more convenient. Attached Figure Description

[0019] Figure 1 Customized sheet metal enclosure drawings; Figure 2 This is a schematic diagram of a partial installation of a hyperboloid spherical screen; Figure 3(a) and (b) are schematic diagrams of the latitude division angle α; Figure 4(a) and (b) are schematic diagrams of the meridian division angle β; Figure 5 This is a schematic diagram of a spherical segmented LED display module; Figure 6 A schematic diagram showing the height and width of the spherical segmentation display module; Figure 7 This is a schematic diagram showing the location of the display module corresponding to the curved steel plate; Figure 8 This is a schematic diagram illustrating the calculation parameters for a curved steel plate. Figure 9 This is a schematic diagram showing the curved steel plate divided into equal parts along its centerline. Figure 10This is a schematic diagram showing the curved steel plate divided into equal sections according to its height. Figure 11 A schematic diagram showing the parameters after the surface is flattened; Figure 12(a) and (b) are schematic diagrams of a partial view of a single display module and the arrangement of the display module's magnet base. Figure 13 A detailed schematic diagram of a portion of the steel plate used to mount the display module; Figure 14 This is a flowchart of the design method of the present invention.

[0020] Explanation of the labels in the diagram: 1. Display module; 2. Sheet metal housing; 3. Fasteners; 4. Steel plate; 5. Steel frame keel; 6. Magnet base. Detailed Implementation

[0021] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0022] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0023] The curved display screen involved in this invention has an arc-shaped display surface. This type of display screen includes, but is not limited to, single-curved display screens, double-curved display screens, and dome display screens with large curvature spherical structures. All of the above-mentioned curved display screens can utilize the steel plate size design method of this invention. To more clearly and specifically illustrate the design concept of this invention, a spherical display screen will be used as an example for detailed explanation below.

[0024] Example 1 Combination Figure 14In this embodiment, standardized LED display modules are first divided using latitude and longitude lines based on the radius of curvature. Then, the geometric parameters of the display modules and the hyperboloid steel plate on which multiple display modules can be installed are determined. Using the design method of this embodiment, the hyperboloid steel plate is flattened into a planar steel plate. Subsequently, the structure of the steel plate is designed according to the geometric parameters of the display modules. Finally, the steel plate is checked. If it meets the requirements, the dimensions are qualified; otherwise, the design parameters of the steel plate are adjusted until the requirements are met.

[0025] The display module segmentation method for spherical displays is usually based on latitude and longitude lines, as described below: Given a radius of R The arc surface of 1, taking the area above the equator as an example, can be obtained by mirroring the design of the area below the equator.

[0026] Combining Figure 3(a) and (b), along the latitude direction according to the angle α Set up several parallel planes to divide the arc surface into m share.

[0027] Combining Figure 4(a) and (b), along the meridian direction according to the angle β Set up several meridian planes to divide the arc surface into equal angles. n share.

[0028] After being divided, the following results were obtained: Figure 5 The spherical segmentation structure shown, Figure 5 Each of the internal segmented units constitutes an independent LED display module.

[0029] A single mounting steel plate can accommodate multiple rows and columns of LED display modules; a single mounting steel plate can be configured for installation. e line (number) i ~ j OK), f LED display modules, such as Figure 7 As shown.

[0030] Combination Figure 6 Set the surface radius to R 1. The height (arc height) of the display module after spherical segmentation is: a The width (arc width) of the display module after spherical segmentation is b Then, the latitude segmentation angle of the display module after spherical segmentation is: α=a / R 1 The meridian division angle of the display module after spherical segmentation is: β=b / R 1 Combination Figure 7 The row number corresponding to the bottommost display module of a single mounting steel plate is... iThe corresponding row number of the topmost display module is j The number of display modules corresponding to a single mounting steel plate is e = yes +1 corresponds to the number of display module widths. f .

[0031] Based on the latitude segmentation angle of the display module after spherical segmentation. α After dividing the sphere, the display module shows the meridian division angle. β At the same time, the weft section angle of the steel plate can be obtained. θ= e α steel plate warp dividing angle λ=fβ Steel plate height h = θR 1.

[0032] Combination Figure 8 Based on the spherical segmentation, the latitude segmentation angle of the display module is displayed. α The number of rows where the bottommost display module is located corresponds to the single mounting steel plate. i and the row number of the topmost display module j We can obtain: The angle of the horizontal line corresponding to the lower edge of the steel plate cutting position: s l =( i -1) α ; The angle of the horizontal line along the cutting position of the steel plate: ; The angle of the horizontal line corresponding to the upper edge of the steel plate cutting position: s u = jα ; Radius of the lower edge of the steel plate cutting position: R 2= R 1·cos( s l ); Radius along the line at the steel plate cutting location: R 3= R 1·cos( s m ); Radius of the upper edge of the steel plate cutting position: R 4= R 1·cos( s u ); The length of the lower edge of the steel plate corresponding to the spherical section: l 1= l · R 2; The length dimension along the line in the steel plate corresponding to the spherical section: l 2= l ·R 3; The length of the upper edge of the steel plate corresponding to the spherical section: l 3= l · R 4; The above parameters all correspond to curved steel plates. In actual processing, the curved steel plate needs to be unfolded into a flat steel plate. In this embodiment, the principle of ensuring the length of the central crosshair is adopted, and the curved steel plate is sized according to the length of the central crosshair. l The length of 2 is divided into equal parts p share( p→ ∞) curved surfaces, such as Figure 9 As shown, the width of each curved surface is l 2 / p The height is h .

[0033] The curved steel plate is divided into equal parts according to its height. q share( q→ ∞) curved surfaces, such as Figure 10 As shown, the height of each part of the surface is Δ h = h / q Each surface angle Δ s = i / q For strips k ( k =1 to q The angle of the lower edge of the strip is s k The length of the lower edge of the strip is The length of the upper edge of the strip is strip k The actual "oblique angle" is c k For height stripes... k due:

[0034] Global bevel: Approximate accuracy varies q Increase and improve.

[0035] Each surface is approximately an isosceles trapezoid, and the angle of each surface is... c / p The midline dimension of each surface is l 2 / p The height is h This p Divide the isosceles trapezoids into sections, align them along their waistlines, and then fit and transform them into a whole. Figure 11 The planar figure shown on the right has a lower edge length of [length missing]. l 4, radius is R6; the length of the middle line is l 5 ( l 5= l 2), radius is R 5; the length of the upper edge is l 6, radius is R 7; The included angle between the left and right sides is 100°. c The height is h Regarding the geometric relationships of the flattened steel plate: l 5= l 2=λ· R 3; R 5= l 5 / γ; R 6= R 5+ h / 2; R 7= R 5- h / 2; l 4=γ· R 6; l 6=γ· R 7.

[0036] The theoretical contour data of the steel plate can be obtained from the above steps. During the design process, LED display module mounting ribs are designed according to the position of the magnet base of the LED display module. The area of ​​the steel plate outside the mounting ribs is hollowed out to form a hollow area for easy wiring and weight reduction. The arrangement of the display module and magnet base 6 is shown in Figure 12. The LED display module mounting steel plate needs to cover the area where the LED display module's magnet base is located. The distance from the magnet base to the edge of the display module is... D The designed safe distance is d Therefore, when designing the mounting steel plate for the LED display module, the width of the mounting ribs corresponding to the magnet base area of ​​the display module should be [value missing]. D+d Additionally, due to design allowances for processing and manufacturing precision, the outermost edge of the steel plate can be contracted inwards to allow for a manufacturing compensation value Δ. d . Figure 13 A schematic diagram of the partial unfolded design of the steel plate for mounting the corresponding display module, using a sphere of a certain radius as a reference.

[0037] When a flat steel plate is installed onto a spherical steel frame keel, the plate will undergo compression deformation due to its hyperboloid shape. To address this, we should allow for compressive deformation but avoid buckling deformation, which requires analyzing the axial pressure on the plate during compression. Since the steel plate is fixed at each rib installation location, the compression analysis will only be performed on the rib installation area within the range of a single display module.

[0038] First, determine the compressive strain and axial stress of the steel plate. The calculation formulas are as follows:

[0039] in, e This represents the compressive strain of the steel plate. s This refers to the axial stress of the steel plate. E The elastic modulus of the steel plate material; P This refers to the axial pressure on the steel plate. A This represents the cross-sectional area of ​​the steel plate.

[0040] The compressive strain of the steel plate is calculated as follows: .

[0041] When the axial pressure on the steel plate reaches the critical value P cr At this point, the steel plate abruptly changes from a linear equilibrium state to a bending equilibrium state, i.e., buckling deformation occurs. The critical compression amount corresponding to this point is... δl cr The corresponding calculation formula is as follows:

[0042] in, P cr This is the critical value of axial pressure on the steel plate; I The moment of inertia of the steel plate section; T The thickness of the steel plate; L The length of the display module width corresponding to the calculated position of the steel plate after deducting the width of the reinforcing bar. K The end constraint coefficient; e cr This represents the critical compressive strain of the steel plate.

[0043] Since the steel plate is fixed on both sides, it is completely fixed and constrained at both ends. The end constraint coefficient is... K =0.5, substitute the end constraint coefficient into the formula to obtain the critical compression amount. .

[0044] At this point, the design verification of the steel plate dimensions is performed, due to the compression of the entire steel plate. δl correspond f Column display module, critical compression amount δl cr It corresponds to a single column display module, so it should meet the following requirements. δl≤δl cr · f At this time, the steel plate will not buckle. The difference between the designed (flattened) lower edge length of the steel plate and the original lower edge length of the curved surface is: δl lower And the difference between the length of the edge of the steel plate after design (flattening) and the length of the edge of the original curved surface: δl upper All should comply with δl≤δl cr · f Requirements. The calculation formula is as follows:

[0045] for δl lower and δl upper The following conditions must be met:

[0046] If δl lower and δl upper If any value fails the verification, adjust the parameters. e , f To adjust the steel plate size and reduce δl The algorithm iterates until the condition is met. δl≤δl cr · f In practical applications, steel plate thickness... T The value should be fixed from the initial design stage, so there is no need to adjust the steel plate thickness. T To adjust the size of the steel plate.

[0047] Example 2 A curved display screen according to this embodiment includes a steel plate prepared by the design method described in Embodiment 1. A plurality of LED display modules are arranged on the steel plate, and the steel plate is provided with mounting ribs matching the magnet base and a hollow area.

Claims

1. A method for designing the dimensions of a steel plate for a curved display screen, characterized in that, Includes the following steps: Step S1: Based on the preset surface radius, the surface is divided using latitude and longitude lines to obtain several independent LED display modules; Step S2: Determine the geometric parameters of the LED display module and the curved steel plate on which multiple LED display modules can be installed; Step S3: Flatten the curved steel plate into a flat steel plate, and complete the structural design of the curved steel plate according to the geometric parameters of the LED display module; Step S4: Verify the steel plate after the structural design is completed. If the verification is qualified, determine the steel plate size. If the verification is unqualified, adjust the steel plate design parameters and repeat the verification steps until the verification is qualified.

2. The method for designing the dimensions of a curved display screen steel plate according to claim 1, characterized in that, The methods for dividing latitude and longitude lines in step S1 include: At a preset angle along the latitude direction α Set up several parallel planes to divide the arc surface at equal angles. m In the meridian direction at a preset angle β Set up several meridian planes to divide the arc surface at equal angles. n The individual segments after division constitute an LED display module.

3. The method for designing the dimensions of a curved display screen steel plate according to claim 1, characterized in that, The methods for determining the geometric parameters of the curved steel plate in step S2 include: The preset row number of the bottommost LED display module on a single steel plate is [number]. i The row number of the topmost LED display module is j Combined with surface radius R 1. Arc height of LED display module a and arc width b Determine the latitude segmentation angle of the display module. α meridian dividing angle β And the number of display modules in height e and width corresponding to a single steel plate. f ; Further determine the weft section angle of the steel plate θ Steel plate warp dividing angle λ Steel plate height h ; At the same time, determine the horizontal angles corresponding to the lower, middle, and upper edges of the steel plate cutting position. σ l , σ m , σ u ; Radius of the lower, middle and upper edges R 2. R 3. R 4. and the length dimensions of the lower, middle, and upper edges. l 1. l 2. l 3.

4. The method for designing the dimensions of a curved display screen steel plate according to claim 3, characterized in that, The methods for flattening the curved steel plate into a flat steel plate in step S3 include: Adhering to the principle of ensuring the length of the central crosshair, the curved steel plate is cut according to the length of the centerline at the cutting position of the steel plate. l The length of 2 is divided into several miniature curved surfaces, each of which is approximately an isosceles trapezoid. All the isosceles trapezoids are spliced ​​together along the waistline to transform them into a planar steel plate outline structure.

5. The method for designing the dimensions of a curved display screen steel plate according to claim 4, characterized in that, In step S3, the curved steel plate is divided into equal parts along the height direction; the curved steel plate is divided into q curved strips along the height, and the height Δ of each curved strip is obtained. h Angle Δ σ , strip lower edge angle σ k Length of the lower edge of the strip Length of the upper edge of the strip Calculate the local oblique angle corresponding to each curved surface strip. γ k and the global bevel angle of the overall curved steel plate γ .

6. The method for designing the dimensions of a curved display screen steel plate according to claim 5, characterized in that, In step S3, the length of the lower edge of the flattened steel plate is l 4, radius is R 6; the length of the middle line is l 5, radius is R 5; the length of the upper edge is l 6, radius is R 7; The included angle between the left and right sides is 100°. γ The height is h The corresponding geometric relationship is: l 5 = l 2=λ· R 3; R 5= l 5 / γ; R 6= R 5+ h / 2; R 7 = R 5- h / 2; l 4=γ· R 6; l 6=γ· R 7.

7. A method for designing the dimensions of a curved display screen steel plate according to any one of claims 1-6, characterized in that, Step S3, the steel plate structure design, includes the theoretical outline design of the steel plate, the design of the installation ribs, and the design of the openwork area: After determining the theoretical contour data of the steel plate, the mounting ribs of the LED display module are arranged according to the position of the magnet base of the LED display module, based on the distance from the magnet base to the edge of the display module. D and preset safe distance d Determine the width of the ribs to be installed; The area of ​​the steel plate other than the ribs is designated as a hollow area, while a manufacturing compensation value Δ is reserved by shrinking inward from the outermost part of the steel plate. d .

8. A method for designing the dimensions of a curved display screen steel plate according to any one of claims 1-6, characterized in that, The process of verifying the steel plate in step S4 includes: Determine the compression amount of the entire steel plate δl Corresponding display module width quantity f The critical compression amount of the steel plate corresponding to the single-column display module δl cr ; Obtain the difference between the length of the bottom edge of the flattened steel plate and the length of the bottom edge of the original curved surface. δl lower Obtain the difference between the length of the edge of the flattened steel plate and the length of the edge of the original curved surface. δl upper ;check δl lower , δl upper All meet δl≤δl cr · f Only if the conditions are met can the verification be considered successful.

9. The method for designing the dimensions of a curved display screen steel plate according to claim 8, characterized in that, like δl lower and δ l upper If any value fails to meet the verification criteria, adjust the height (e) and width (e) of the LED display modules installed on a single steel plate. f To adjust the steel plate size and reduce the steel plate compression. δl The algorithm iterates until the condition is met. δl≤δl cr · f The conditions have been met and the verification is satisfactory.

10. A curved display screen, characterized in that, The steel plate is prepared using the design method described in any one of claims 1-9, wherein a plurality of LED display modules are arranged on the steel plate, and the steel plate is provided with mounting ribs for matching magnet seats and a hollow area.

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