Bending path planning method and device, storage medium and electronic equipment

Abstract

The invention provides a bending path planning method and device, a storage medium and electronic equipment, and relates to the field of flexible screen bending. The method comprises the following steps: determining a target feature parameter of a target screen body; a bending path constraint relation corresponding to the screen body model is determined according to the target characteristic parameters, the bending path constraint relation is established based on the bending length and a bending critical point, the bending critical point is arranged in a bending transition area in the screen body model, and the bending length represents the length of an arc segment where the bending critical point and the bending end of the bending transition area are located; the bending length is a variable value; and planning a bending path of the screen body model based on the bending path constraint relation. According to the method, the tension can be distributed more uniformly, the damage risk to the screen body is reduced, meanwhile, the design efficiency is improved, and human errors are reduced.

Description

Technical Field

[0001] The present application relates to the field of flexible screen bending technology, and specifically to a bending path planning method and device, a storage medium and an electronic device. Background Art

[0002] The design of the pad bending path depends on the bending radius, bending length, bending angle and thickness of the flexible printed circuit board. The main problem with the existing solution is that the bending length is regarded as a fixed value, resulting in a single critical bending point of the screen during the bending process, which makes the point subject to a large tensile force. Therefore, the data of each point needs to be adjusted to avoid damage to the screen during the bending process. However, this method is inefficient and may cause the risk of screen damage. Summary of the invention

[0003] In view of this, embodiments of the present application provide a method and device for planning a curved path, a storage medium, and an electronic device.

[0004] In a first aspect, an embodiment of the present application provides a bending path planning method, including: determining target characteristic parameters of a target screen; determining a bending path constraint relationship corresponding to the screen model based on the target characteristic parameters, the bending path constraint relationship being established based on a bending length and a bending critical point, the bending critical point being set in a bending transition area in the screen model, the bending length representing the length of an arc segment where the bending critical point and the bending end of the bending transition area are located, and the bending length being a variable value; based on the bending path constraint relationship, planning a bending path of the screen model.

[0005] In combination with the first aspect, in certain implementations of the first aspect, during the bending process of the screen model, the bending critical point moves within the bending transition area.

[0006] In combination with the first aspect, in certain implementations of the first aspect, the target characteristic parameter includes a bending length, and at least one of a bending radius and a thickness of the flexible printed circuit board.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the bending path constraint relationship corresponding to the screen model is determined, including: determining the bending angle of the screen model; constructing a dynamic correlation between the bending length and the bending angle; determining a first expression for the longitudinal bending path and a first expression for the transverse bending path; substituting the dynamic correlation into the first expression for the longitudinal bending path and the first expression for the transverse bending path to obtain a second expression for the longitudinal bending path and a second expression for the transverse bending path, and determining the second expression for the longitudinal bending path and the second expression for the transverse bending path as bending path constraint relationships; the second expression for the longitudinal bending path and the second expression for the transverse bending path are used to obtain the spatial position of the bending critical point at a preset bending angle of the target screen.

[0008] In conjunction with the first aspect, in certain implementations of the first aspect, the dynamic correlation between the bending length and the bending angle includes:

[0009]

[0010] Among them, L max Indicates the maximum bending length, L min represents the minimum bending length, and θ represents the bending angle.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the first expression of the lateral bending path includes: Y = L-cosθ*(L-θ*R)-R*sinθ-T*sinθ; the first expression of the longitudinal bending path includes: Z = sinθ*(LR*θ)+RR*cosθ-T*cosθ; wherein Y represents the lateral bending path, Z represents the longitudinal bending path, θ represents the bending angle, R represents the bending radius, and T represents the thickness of the flexible printed circuit board.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the bending path of the screen model is composed of the spatial positions of the bending critical points at different bending angles; based on the bending path constraint relationship, the bending path of the screen model is planned, including: based on the bending path constraint relationship, planning multiple candidate paths of the screen model; determining the optimal bending path that meets the target conditions from the multiple candidate paths, wherein the target conditions include that the relaxation margin of the target screen at the bending critical point is the largest, and / or the pulling degree of the target screen at the bending critical point is the lowest.

[0013] In the second aspect, an embodiment of the present application provides a screen bending path planning device, including: a first determination module, used to determine the target characteristic parameters of the target screen; a second determination module, used to determine the bending path constraint relationship corresponding to the screen model based on the target characteristic parameters, the bending path constraint relationship is established based on the bending length and the bending critical point, the bending critical point is set in the bending transition area in the screen model, the bending length represents the length of the arc segment where the bending critical point and the bending end of the bending transition area are located, and the bending length is a variable value; a planning module, used to plan the bending path of the screen model based on the bending path constraint relationship.

[0014] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program is used to execute the bending path planning method described in the first aspect.

[0015] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising: a processor; a memory for storing instructions executable by the processor; and the processor is used to execute the bending path planning method described in the first aspect.

[0016] This application sets the bending length as a variable value rather than a fixed value, which allows for more flexible adjustment of the bending path during the design process to accommodate different design requirements. At the same time, since the bending length can be varied, this application also avoids the need to manually modify each point data individually, improving design efficiency and reducing human errors. In addition, by setting the bending critical point in the bending transition area rather than a single fixed point, the pulling force can be distributed more evenly, reducing the risk of damage to the target screen body, and by planning the bending path of the screen model based on the bending path constraint relationship, the bending process can be more accurately controlled and the bending quality can be improved. Through more uniform force distribution and precise bending path planning, it is also easier to produce products with more consistent quality and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0018] Figure 1 The figure is a schematic flow chart of a bending path planning method provided in one embodiment of the present application.

[0019] Figure 2a Shown is a schematic diagram of a bending path in the prior art.

[0020] Figure 2b Shown is a schematic diagram of a bending path provided in an embodiment of the present application.

[0021] Figure 3 Shown is a schematic diagram of determining the bending angle provided by an embodiment of the present application.

[0022] Figure 4 Shown is a schematic diagram of the transverse bending direction and the longitudinal bending direction provided in an embodiment of the present application.

[0023] Figure 5 Shown is a schematic diagram of an optimized front-to-rear bending path provided by an embodiment of the present application.

[0024] Figure 6 Shown is a schematic diagram of the comparison of states before and after optimization provided by an embodiment of the present application.

[0025] Figure 7 Shown is a schematic structural diagram of a screen bending path planning device provided in one embodiment of the present application.

[0026] Figure 8 Shown is a schematic structural diagram of an electronic device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0027] 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.

[0028] Figure 1 FIG. 1 is a flow chart of a method for planning a curved path according to an embodiment of the present application. Figure 1 As shown, the method includes the following steps.

[0029] Step S110, determining target characteristic parameters of a target screen and determining a screen model that meets the target characteristic parameters.

[0030] The target characteristic parameters are key indicators that need to be met during the design and manufacturing of the screen. In some embodiments, the target characteristic parameters include: the size information of the screen, such as length, width, and height; the physical property information of the screen, such as elastic modulus, yield strength, and heat resistance; and the bending radius and bending angle that the screen can withstand. In other embodiments, the target characteristic parameters include at least one of the bending length, the bending radius, and the thickness of the flexible printed circuit board.

[0031] Step S120, determining the bending path constraint relationship corresponding to the screen model according to the target characteristic parameters.

[0032] Before planning the bending path of the screen, it is necessary to determine a mathematical or computer model, namely the screen model, which can represent the actual screen and contains all the predetermined target characteristic parameters of the target screen. Exemplarily, the process of determining the screen model includes: collecting all parameters and data related to the screen design; using computer-aided design software or other engineering tools to create a geometric model of the screen; defining all the above preset target characteristic parameters in the model; and analyzing the response of the screen model under different conditions through finite element analysis or other simulation methods to ensure that the screen model can meet the design requirements.

[0033] In this embodiment, the bending path constraint relationship is established based on the bending length and the bending critical point. The bending critical point is set in the bending transition area in the screen model. The bending length represents the length of the arc segment where the bending critical point and the bending end of the bending transition area are located. In addition, the bending length in this application is a variable value.

[0034] Specifically, the bending path constraint relationship refers to a series of rules or restrictions that need to be followed when designing the bending path of the screen model. These constraints ensure that the screen model will not be damaged during the bending process and can meet the design and functional requirements. The bending critical point is the point where stress concentration is most likely to occur in the screen model during the bending process. In this solution, the bending critical point is set in the bending transition area of ​​the screen model. The bending transition area is the area where the screen model starts to bend from a completely flat state. In this area, the shape of the screen model will gradually transition from a flat state to a curved state.

[0035] Figure 2a The figure shows a schematic diagram of the bending path of the prior art. Figure 2a As shown, point O is a fixed bending critical point, which is the position where the screen body begins to deform, that is, the position where the screen body changes from a planar state to a bent state. Specifically, during the bending process, the screen body will bend along a fixed path from the bending critical point until it reaches the bending end point. For example, continue to refer to Figure 2a , the screen bends from state A to state B, and continues to bend until it bends from bent state C to bent state D. In the above bending process, since the bending length is fixed, it means that no matter what the actual size of the screen is, the bending path will be the same length. In addition, since the bending critical point is fixed, the stress is mainly concentrated at this point during the bending process. This concentrated stress may cause damage to the screen material, especially when the elasticity or strength of the screen material is insufficient, the damage to the screen is relatively large.

[0036] Figure 2bFIG. 1 is a schematic diagram of a bending path provided by an embodiment of the present application. It should be noted that: Figure 2b The structure of the bending object shown in Figure 2a are the same, so in Figure 2b Not detailed in the table. Figure 2b As shown, K is the bending transition area, and P1, P2 and P3 are the dynamic bending critical points formed during the bending process. At the bending critical point P1, the arc segment where P1 and Q1 are located is the bending length; at the bending critical point P2, the arc segment where P2 and Q2 are located is the bending length; at the bending critical point P3, the arc segment where P3 and Q3 are located is the bending length. It can be understood that at the bending critical point P3, the screen model is in a completely bent state. At this time, the length of the arc segment where P3 and Q3 are located (bending length) is equal to the length of the bending filter area K.

[0037] In this application, the bending critical points P1, P2, and P3 are dynamic. During the bending process of the screen model, these bending critical points move within the bending transition area, which means that they can be adjusted according to the specific characteristics of the screen model and the bending requirements. This design allows for a more even distribution of stress during the bending process, reducing the risk of damage to the screen model. Specifically, the bending starts at point P1, which is the starting point where the screen model begins to bend. As the bending proceeds, the stress gradually transfers to point P2. This dynamic bending critical point in the middle helps to disperse the stress during the bending process. Continuing to bend, the stress is further transferred to point P3, which is another critical position on the bending path, which helps to ensure the uniformity of stress distribution throughout the bending process. Finally, the screen model completes the bending after point P3, forming the desired curved shape.

[0038] Compared to Figure 2a This solution can more accurately control the stress distribution of the screen model during the bending process by establishing a bending path constraint relationship based on the bending length and the bending critical point, thereby reducing the risk of damage to the screen model. At the same time, setting the bending length as a variable value instead of a fixed value can improve the flexibility of the design and adapt to the bending requirements of different screens.

[0039] Step S130 : planning a bending path of the screen model based on the bending path constraint relationship.

[0040] Specifically, this planning process will consider Figure 2b As shown in the figure, how to start from point P1, gradually transition to points P2 and P3, and finally complete the entire bending process.

[0041] This application sets the bending length as a variable value rather than a fixed value, which allows for more flexible adjustment of the bending path during the design process to accommodate different design requirements. At the same time, since the bending length can vary, this application also avoids the need to manually modify each point data individually, improving design efficiency and reducing human errors. In addition, by setting the bending critical point in the bending transition area rather than a single fixed point, the pulling force can be distributed more evenly, reducing the risk of damage to the screen body, and by planning the bending path of the screen model based on the bending path constraint relationship, the bending process can be more accurately controlled and the bending quality can be improved. Through more uniform force distribution and precise bending path planning, it is easier to produce products with more consistent quality and reliability.

[0042] In some embodiments of the present application, determining the bending path constraint relationship corresponding to the screen model includes: determining the bending angle of the screen model; constructing a dynamic correlation between the bending length and the bending angle; determining a first expression for the longitudinal bending path and a first expression for the transverse bending path; substituting the dynamic correlation between the bending length and the bending angle into the first expression for the longitudinal bending path and the first expression for the transverse bending path to obtain a second expression for the longitudinal bending path and a second expression for the transverse bending path, and determining the second expression for the longitudinal bending path and the second expression for the transverse bending path as the bending path constraint relationship.

[0043] It should be noted that the bending angle of the screen model refers to the bending angle for a certain bending critical point. Figure 3 FIG. 1 is a schematic diagram of determining the bending angle provided by an embodiment of the present application. Figure 3 As shown, at the bending critical point P1, the bending angle is θ, at the bending critical point P2, the bending angle is 90°, and at the bending critical point P3, the bending angle is 180°. Figure 3 It can be seen that when the bending angle is zero, the bending length is the smallest, and when the bending angle is 180°, the bending length is the largest.

[0044] The dynamic correlation between the bending length and the bending angle refers to the mutual dependence and change relationship between the bending length and the bending angle during the bending process of the screen model. Exemplarily, the dynamic correlation between the bending length and the bending angle includes: Among them, L max Indicates the maximum bending length, L min represents the minimum bending length, and θ represents the bending angle. When θ=0, the L value is the smallest, and when θ=π, the L value is the largest.

[0045] Figure 4Shown is a schematic diagram of the transverse bending direction and the longitudinal bending direction provided by an embodiment of the present application. Exemplarily, the first expression of the transverse bending path is: Y = L-cosθ*(L-θ*R)-R*sinθ-T*sinθ; the first expression of the longitudinal bending path is: Z = sinθ*(LR*θ)+RR*cosθ-T*cosθ. Among them, Y represents the transverse bending path, Z represents the longitudinal bending path, θ represents the bending angle, R represents the bending radius, and T represents the thickness of the flexible printed circuit board. It can be understood that the Y-axis represents the length direction of the screen body, and the Z-axis represents the bending depth of the screen body.

[0046] Based on the above, the second expression of the transverse bending path is: The second expression for the longitudinal bending path is:

[0047] In some embodiments, the second expression of the longitudinal bending path and the second expression of the transverse bending path are used to obtain the spatial position of the bending critical point of the target screen under the preset bending angle. Figure 4 In the coordinate system, for the bending critical point P3, its corresponding preset bending angle is 90°. The value calculated by the second expression of the transverse bending path represents the projection position of P3 on the Y axis, and the value calculated by the second expression of the longitudinal bending path represents the projection position of P3 on the Z axis. The projection positions of P3 on the Y axis and the Z axis are obtained, and the spatial position of the bending critical point P3 when the preset bending angle is 90° is determined.

[0048] In this embodiment, by constructing a dynamic correlation between the bending length and the bending angle, the required bending length of the screen at different bending angles can be described and predicted more accurately, making the design of the bending path more scientific and reasonable. Determining the first expression of the longitudinal and transverse bending paths provides personalized design parameters for the bending of the screen, thereby improving the flexibility and adaptability of the design. Substituting the dynamic correlation between the bending length and the bending angle into the expression of the longitudinal and transverse bending paths, a second expression can be obtained, which further refines the planning of the bending path. This precise control helps to reduce errors in the bending process and improve the quality and reliability of the screen. The second expression of the longitudinal and transverse bending paths is determined as a bending path constraint relationship, which provides a clear design basis for the bending of the screen. These constraints can guide the actual bending operation and ensure that the bending process meets the design requirements. By precisely controlling the bending path, the present application helps to achieve a more uniform stress distribution during the bending process of the screen. This can reduce stress concentration, reduce the risk of screen damage, and improve the durability of the product.

[0049] In addition, the present application utilizes the prior art and the solution in the present application to simulate the bending path of the same screen model. Figure 5 FIG. 1 is a schematic diagram of an optimized front and rear bending path provided by an embodiment of the present application. Figure 5 As shown, the bending path before optimization refers to the bending path of the screen model determined by the prior art, and the bending path after optimization refers to the bending path of the screen model determined by the solution in this application. Figure 5 It can be seen that the bending path before optimization is characterized by relatively concentrated bending points in the Y-axis direction, which may lead to stress concentration and material pulling. The optimized bending path is more dispersed or smoother in the Y-axis direction, indicating that the bending points are more evenly distributed, reducing the pulling force at a single point. At the same time, the optimized bending path may change more gently in the Z-axis direction, which means that the bending depth of the target screen changes more evenly during the actual bending process, which also helps to reduce the degree of pulling.

[0050] In summary, the design of the optimized bending path allows the bending critical point of the target screen to have a larger relaxation margin during the bending process, reduces the reliance on manual adjustment, and reduces the pulling degree of the target screen through a more uniform stress distribution. This method improves production efficiency, reduces costs, and improves product reliability and durability.

[0051] Figure 6 The figure shows a schematic diagram of the comparison of the states before and after optimization provided by an embodiment of the present application. Figure 6 As shown in the figure, in the optimized bending path, the degree to which the target screen enters a tight state during the bending process can be reduced, thereby reducing pulling and stress and extending the service life of the target screen. In addition, the optimized bending path increases the relaxation margin, allowing the target screen to maintain a more relaxed state during bending, reducing the occurrence of a tight state, which helps to improve the durability and reliability of the target screen.

[0052] In some embodiments of the present application, the bending path of the screen model is composed of the spatial positions of the bending critical points at different bending angles. Further, based on the bending path constraint relationship, the bending path of the screen model is planned, including: based on the bending path constraint relationship, planning multiple candidate paths of the screen model; determining the optimal bending path that meets the target conditions from the multiple candidate paths, wherein the target conditions include the maximum relaxation margin of the target screen at the bending critical point, and / or the minimum pulling degree of the target screen at the bending critical point.

[0053] Specifically, multiple possible bending paths are created under the premise of satisfying the bending path constraint relationship. These paths have different shapes, lengths, angles and other features, aiming to explore various possible bending methods. From multiple candidate paths, one or several optimal paths need to be selected. This selection process will consider the following target conditions.

[0054] The maximum relaxation margin of the target screen at the critical bending point means that after bending, the target screen still maintains a certain unstretched length, which can improve the durability of the target screen and reduce fatigue damage in long-term cyclic use.

[0055] The lowest pulling degree of the target screen at the bending critical point means that the target screen is subjected to the least pulling force during the bending process. Reducing the pulling force can prevent the target screen from being overstretched or torn, thereby improving the reliability and life of the product.

[0056] In this solution, by pre-defining the bending path constraint relationship and planning multiple candidate paths, different bending solutions can be quickly explored, thereby improving design efficiency. Selecting the optimal bending path can ensure that the relaxation margin of the bending critical point of the target screen is maximized during the bending process, reduce excessive stretching and potential damage to the target screen, and thus improve the bending quality. By minimizing the pulling degree of the target screen, the damage to the target screen during the bending process can be reduced, and the durability and reliability of the product can be improved.

[0057] Combination of the above Figures 1 to 6 , describes in detail the embodiment of the bending path planning method of the present application, and the following is combined with Figure 7 , the embodiment of the screen bending path planning device of the present application is described in detail. It should be understood that the description of the bending path planning method embodiment corresponds to the description of the screen bending path planning device embodiment, so the part not described in detail can refer to the previous method embodiment.

[0058] Figure 7 FIG. 1 is a schematic diagram of the structure of a screen bending path planning device provided in an embodiment of the present application. Figure 7 As shown, the screen bending path planning device provided in the embodiment of the present application includes:

[0059] A first determination module 710 is used to determine target characteristic parameters of a target screen;

[0060] The second determination module 720 is used to determine the bending path constraint relationship corresponding to the screen model according to the target characteristic parameters, the bending path constraint relationship is established based on the bending length and the bending critical point, the bending critical point is set in the bending transition area in the screen model, the bending length represents the length of the arc segment where the bending critical point and the bending end of the bending transition area are located, and the bending length is a variable value;

[0061] The planning module 730 is used to plan the bending path of the screen model based on the bending path constraint relationship.

[0062] In one embodiment of the present application, during the bending process of the screen model, the bending critical point moves within the bending transition area.

[0063] In one embodiment of the present application, the target characteristic parameter includes at least one of a bending length, a bending radius and a thickness of the flexible printed circuit board.

[0064] In one embodiment of the present application, the second determination module 720 is also used to determine the bending angle of the screen model; construct a dynamic correlation between the bending length and the bending angle; determine a first expression of the longitudinal bending path and a first expression of the transverse bending path; substitute the dynamic correlation between the bending length and the bending angle into the first expression of the longitudinal bending path and the first expression of the transverse bending path to obtain a second expression of the longitudinal bending path and a second expression of the transverse bending path, and determine the second expression of the longitudinal bending path and the second expression of the transverse bending path as bending path constraint relationships; the second expression of the longitudinal bending path and the second expression of the transverse bending path are used to obtain the spatial position of the bending critical point of the target screen at a preset bending angle.

[0065] In one embodiment of the present application, the dynamic correlation between the bending length and the bending angle includes: Among them, L max Indicates the maximum bending length, L min represents the minimum bending length, and θ represents the bending angle.

[0066] In one embodiment of the present application, the first expression of the lateral bending path includes: Y = L-cosθ*(L-θ*R)-R*sinθ-T*sinθ; the first expression of the longitudinal bending path includes: Z = sinθ*(LR*θ)+RR*cosθ-T*cosθ; wherein Y represents the lateral bending path, Z represents the longitudinal bending path, θ represents the bending angle, R represents the bending radius, and T represents the thickness of the flexible printed circuit board.

[0067] In one embodiment of the present application, the bending path of the screen model is composed of the spatial positions of the bending critical points at different bending angles; the planning module 730 is also used to plan multiple candidate paths of the screen model based on the bending path constraint relationship; determine the optimal bending path that meets the target conditions from the multiple candidate paths, wherein the target conditions include the maximum relaxation margin of the target screen at the bending critical point, and / or the lowest pulling degree of the target screen at the bending critical point.

[0068] Below, reference Figure 8 To describe an electronic device according to an embodiment of the present application. Figure 8 Shown is a schematic structural diagram of an electronic device provided by an exemplary embodiment of the present application.

[0069] like Figure 8 As shown, the electronic device 80 includes one or more processors 801 and a memory 802 .

[0070] The processor 801 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 80 to perform desired functions.

[0071] The memory 802 may include one or more computer program products, and the computer program product may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache), etc. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 801 may run the program instructions to implement the bending path planning method of each embodiment of the present application described above and / or other desired functions. Various contents such as screen models, bending path constraint relationships, bending lengths, bending critical points, etc. may also be stored in the computer-readable storage medium.

[0072] In one example, the electronic device 80 may further include: an input device 803 and an output device 804 , and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0073] The input device 803 may include, for example, a keyboard, a mouse, etc.

[0074] The output device 804 can output various information to the outside, including screen model, bending path constraint relationship, bending length, bending critical point, etc. The output device 804 can include, for example, a display, a speaker, a printer, a communication network and its connected remote output device, etc.

[0075] Of course, to simplify, Figure 8 Only some of the components related to the present application in the electronic device 80 are shown, and components such as a bus, an input / output interface, etc. are omitted. In addition, according to specific application situations, the electronic device 80 may also include any other appropriate components.

[0076] In addition to the above-mentioned methods and devices, an embodiment of the present application may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the bending path planning method according to various embodiments of the present application described above in this specification.

[0077] The computer program product may be written in any combination of one or more programming languages ​​to write program codes for performing the operations of the embodiments of the present application, including object-oriented programming languages, such as Java, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user computing device, as an independent software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0078] In addition, an embodiment of the present application may also be a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by a processor, the processor executes the steps of the bending path planning method according to various embodiments of the present application described above in this specification.

[0079] The computer readable storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0080] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0081] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0082] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0083] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0084] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A method for planning a curved path, characterized in that: include: Determine target characteristic parameters of the target screen; Determine a bending path constraint relationship corresponding to the screen model according to the target characteristic parameter, wherein the bending path constraint relationship is established based on a bending length and a bending critical point, wherein the bending critical point is set in a bending transition area in the screen model, and the bending length represents a length of an arc segment where the bending critical point and the bending end of the bending transition area are located, and the bending length is a variable value; Based on the bending path constraint relationship, a bending path of the screen model is planned.

2. The method for planning a curved path according to claim 1, characterized in that: During the bending process of the screen model, the bending critical point moves within the bending transition area.

3. The method for planning a curved path according to claim 1, characterized in that: The target characteristic parameters include a bending length, and at least one of a bending radius and a thickness of the flexible printed circuit board.

4. The method for planning a curved path according to any one of claims 1 to 3, characterized in that: The determining of the bending path constraint relationship corresponding to the screen model includes: Determining a bending angle of the screen model; Constructing a dynamic correlation between the bending length and the bending angle; Determine a first expression for a longitudinal bending path and a first expression for a transverse bending path; Substituting the dynamic correlation into the first expression of the longitudinal bending path and the first expression of the transverse bending path, obtaining a second expression of the longitudinal bending path and a second expression of the transverse bending path, and determining the second expression of the longitudinal bending path and the second expression of the transverse bending path as the bending path constraint relationship; The second expression of the longitudinal bending path and the second expression of the transverse bending path are used to obtain the spatial position of the bending critical point at a preset bending angle of the target screen body.

5. The method for planning a curved path according to claim 4, characterized in that: The dynamic correlation between the bending length and the bending angle includes: Among them, L max Indicates the maximum bending length, L min represents the minimum bending length, and θ represents the bending angle.

6. The method for planning a curved path according to claim 4, characterized in that: The first expression of the transverse bending path includes: Y=L-cosθ*(L-θ*R)-R*sinθ-T*sinθ; The first expression of the longitudinal bending path includes: Z = sinθ*(LR*θ)+RR*cosθ-T*cosθ; Wherein, Y represents the transverse bending path, Z represents the longitudinal bending path, θ represents the bending angle, R represents the bending radius, and T represents the thickness of the flexible printed circuit board.

7. The method for planning a curved path according to any one of claims 1 to 3, characterized in that: The bending path of the screen model is composed of the spatial positions of the bending critical points at different bending angles; The planning of the bending path of the screen model based on the bending path constraint relationship includes: Based on the bending path constraint relationship, planning multiple candidate paths of the screen model; An optimal bending path satisfying target conditions is determined from the multiple candidate paths, wherein the target conditions include that the relaxation margin of the target screen body at the bending critical point is maximum, and / or the pulling degree of the target screen body at the bending critical point is minimum.

8. A bending path planning device, characterized in that: include: A first determination module is used to determine target characteristic parameters of a target screen; A second determination module is used to determine the bending path constraint relationship corresponding to the screen model according to the target characteristic parameters, wherein the bending path constraint relationship is established based on the bending length and the bending critical point, wherein the bending critical point is set in the bending transition area in the screen model, and the bending length represents the length of the arc segment where the bending critical point and the bending end of the bending transition area are located, and the bending length is a variable value; A planning module is used to plan the bending path of the screen model based on the bending path constraint relationship.

9. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to execute the bending path planning method according to any one of claims 1 to 7.

10. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is used to execute the bending path planning method described in any one of claims 1 to 7.

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