Roll-to-roll process correction system

Abstract

The roll-to-roll process correction system according to the present invention comprises: at least one camera that captures images of different positions of a roll to generate images; and a control unit that calculates errors in a first axis, a second axis, and a line angle on the basis of a cutting line included in the image, a reference line of the first axis, and a reference line of the second axis intersecting the first axis, and generates control signals of different parameters for each process for forming the cutting line on the coil on the basis of the calculated errors, the control unit generates a first control signal for a first step of forming a first cutting line on a first layer of the coil, and a second control signal for a second step of forming a second cutting line on a second layer stacked on the first layer. The first control signal and the second control signal are generated based on different parameters.

Description

Technical Field

[0001] This invention relates to a system for correcting process parameters in a roll-to-roll thin-film solar cell manufacturing apparatus. Specifically, this invention relates to a roll-to-roll process correction system that transmits control signals of process parameters to a roll-to-roll apparatus based on cutting lines formed on the roll material. Background Technology

[0002] The content described in this section is only to provide background information for this embodiment and does not constitute prior art.

[0003] In thin-film solar cells, the scribing line plays a crucial role, significantly impacting the overall performance and efficiency of the solar cell. A thin-film solar cell module consists of multiple small individual cells, each absorbing sunlight and generating current independently. The scribing line electrically isolates each individual cell, enabling them to operate independently while simultaneously connecting them to each other; this is an essential element for the normal operation of the solar cell module.

[0004] These cutting lines are formed using an automated system. This automated system plays a crucial role in the manufacturing process of thin-film solar cells; however, it has limitations in terms of variable control.

[0005] Automated system control requires managing numerous variables. For example, precise synchronization is needed for machine position adjustments such as laser power, roll material movement speed, roll material tension, and the cutting module's alignment. In such complex systems, perfect control of the interactions between variables is difficult; even minute errors can affect the entire process. Therefore, inadequate hardware and software integration can lead to system malfunctions or errors.

[0006] While automated systems for cutting wires offer many advantages, they also have limitations in controlling numerous variables, and techniques are needed to address these limitations.

[0007] Existing technical documents Patent documents Patent Document 1: Korean Patent Publication No. 10-2277201 (Invention Title: Real-time Roll-to-Roll Process Correction Method Using Multiple Cut Images) Summary of the Invention The problem the invention aims to solve The purpose of this invention is to provide a roll-to-roll process correction system that generates control signals with different parameters according to each cutting line process.

[0008] Furthermore, another object of the present invention is to provide a roll-to-roll process correction system based on control signals related to one or more of the cutting line generation included in the layer images of each cutting process, the horizontal direction of the roll, the roll moving speed, and the line angle of the cutting module.

[0009] The objectives of this invention are not limited to those mentioned above. Other objectives and advantages not mentioned in the invention can be understood through the following description and further clarified through the embodiments of this invention. Furthermore, it is obvious that the objectives and advantages of this invention can be achieved through devices and combinations thereof within the scope of the claims.

[0010] means for solving problems An embodiment of the present invention provides a roll-to-roll process correction system for controlling a roll-to-roll (R2R) device, comprising: at least one camera for capturing images at different positions of the roll material to generate images; and a control unit for calculating errors of the first axis, the second axis, and line angles based on the cutting lines included in the images, a reference line of a first axis, and a reference line of a second axis intersecting the first axis. Based on the calculated errors, the control unit generates control signals with different parameters for each process used to form a cutting line on the roll material. The control unit generates a first control signal and a second control signal. The first control signal is used in a first process to form a first cutting line on a first layer of the roll material, and the second control signal is used in a second process to form a second cutting line on a second layer stacked on the first layer. The first control signal and the second control signal can be generated based on different parameters.

[0011] Furthermore, the camera can generate images including one end of the cut lines formed on the roll material.

[0012] Furthermore, the roll material may include a first layer, a second layer, and a third layer stacked sequentially. The control unit generates a first parameter required to correct the offset of the first axis based on a first image of the first layer. The control unit may also generate a second parameter required to correct the offset of the second axis or the offset of the line angle based on a second image of the second layer or a third image of the third layer.

[0013] Furthermore, the control unit can generate the first control signal based on the first parameter, and the first control signal includes correction information related to the first axis of the roll in the roll-to-roll device.

[0014] Furthermore, the control unit can generate the second control signal based on the second parameter, and the second control signal includes correction information related to the roll movement speed of the roll-to-roll device.

[0015] Furthermore, the control unit can generate a third control signal based on the second parameter, the third control signal including correction information related to the line angle of the cutting module included in the roll-to-roll device.

[0016] Furthermore, the control unit can calculate the error of the first axis based on the interval between the first cutting line formed in the first layer and the reference line of the second axis.

[0017] Furthermore, the control unit can calculate the error of the second axis based on the interval between the second cutting line formed in the second layer and the third cutting line formed in the third layer.

[0018] Furthermore, the control unit can calculate the error of the line angle based on the interval between the second cutting line formed on the second layer and the third cutting line formed on the third layer, and the distance between the different first reference point and the second reference point located on the roll material.

[0019] Invention Effects The roll-to-roll process correction system of the present invention can generate control signals with different parameters according to each cutting line process, thus correcting the process parameters of the cutting line corresponding to each cutting process.

[0020] Furthermore, the present invention can calculate the error of process parameters based on the cutting lines included in the layer images of each cutting process, thus making it easy to analyze the quality of the cutting lines.

[0021] In addition to the above content, the specific effects of the present invention will be explained below in conjunction with specific embodiments used to implement the present invention. Attached Figure Description

[0022] Figure 1 A conceptual diagram is provided to briefly illustrate a roll-to-roll process correction system according to an embodiment of the present invention.

[0023] Figure 2 To show Figure 1 The diagram shows the structure of the roll material.

[0024] Figure 3 This is a conceptual diagram used to illustrate the operation of a roll-to-roll alignment system.

[0025] Figure 4 This is a flowchart illustrating a roll-to-roll process correction method according to an embodiment of the present invention.

[0026] Figure 5 For the purpose of illustrating generation Figure 4 The flowchart shown illustrates the process of the control signals in the first layer.

[0027] Figure 6 For the purpose of illustrating generation Figure 4The flowchart shows the process of control signals for the second or third layer.

[0028] Figures 7 to 9 This is an illustrative diagram illustrating the roll-to-roll process correction method for the cutting line of the first setting structure.

[0029] Figures 10 to 14 This is an illustrative diagram illustrating the roll-to-roll process correction method for the cutting line of the second setting structure. Detailed Implementation

[0030] In this specification and the scope of the invention claims, the terms or words used should not be limited to their ordinary or dictionary meanings. Based on the principle that inventors can define terms or words to best describe their invention, they should be interpreted according to their meanings and concepts consistent with the technical concept of the invention. Furthermore, it should be understood that the embodiments described in this specification and the structures shown in the accompanying drawings are merely one embodiment of the invention and do not represent the entirety of the technical concept. Therefore, at the time of this application, there may be equivalent technical solutions and variations that can replace them.

[0031] In this specification and the scope of the invention claims, the terms "first," "second," "A," "B," etc., are used to describe various structural elements, and the structural elements are not limited to the terms used. These terms are used only to distinguish one structural element from another. For example, without departing from the scope of the invention claims, a first structural element may be named a second structural element, and similarly, a second structural element may be named a first structural element. The term "and / or" includes a combination of multiple related descriptions or one of multiple related descriptions.

[0032] In this specification and the scope of the invention claims, the terminology used is for illustrative purposes only and does not limit the invention. Unless the context clearly indicates otherwise, singular expressions include plural expressions. It should be understood in this application that terms such as "comprising" or "having" do not preclude the presence or addition of features, numbers, steps, operations, structural elements, components, or combinations thereof described in the specification.

[0033] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0034] Terms defined in commonly used dictionaries should be interpreted as having the same meaning as they have in the context of the relevant technology, and should not be interpreted as having an idealized or overly formal meaning unless explicitly defined in this application.

[0035] Furthermore, the various structures, processes, procedures, or methods included in the various embodiments of the present invention can be shared within a scope that is not contradictory at the technical level.

[0036] The following is for reference Figures 1 to 14 This invention provides a detailed description of the roll-to-roll process correction system and method according to embodiments of the present invention.

[0037] First, refer to Figures 1 to 3 Explain the roll-to-roll calibration system.

[0038] Figure 1 To briefly illustrate a conceptual diagram of a roll-to-roll process correction system according to an embodiment of the present invention, Figure 2 To show Figure 1 The diagram shown is a block diagram of the structure of the roll material. Figure 3 This is a conceptual diagram used to illustrate the operation of the roll-to-roll alignment system.

[0039] Reference Figures 1 to 3 A roll-to-roll process correction system 100 for controlling a roll-to-roll (R2R) device 200 used in thin-film solar cell production includes at least one camera 110 and a control unit 120. The camera 110 can be installed in the roll-to-roll device 200 at various cutting processes for forming cutting lines on the web 10, and can capture at least one image by photographing a predetermined position of the web 10 as it moves.

[0040] Reference Figure 2 The roll material 10 is divided into a first layer P1, a second layer P2, and a third layer P3. As each layer is deposited sequentially, a cutting line can be formed on each layer. In this case, the first layer P1 is formed as a transparent electrode, the second layer P2 is formed as a perovskite electrode, and the third layer P3 is formed as a metal electrode.

[0041] The following is a brief description of the roll-to-roll device 200 forming the cutting line. The roll material 10 moves along the first roller 210-1 and the second roller 210-2. As the cutting module 230 moves along the set moving line 231, the roll material 10 is irradiated with a laser. The laser etches the uppermost layer of the roll material 10 to form the cutting line 20. This operation is performed on P1, P2, and P3 respectively, which can be divided into the first cutting process, the second cutting process, and the third cutting process. In this case, each process can be equipped with one or more cameras 110, which can capture images of the roll material 10 after the cutting line is formed on each layer.

[0042] Reference Figure 3In each cutting process, the workpiece 220 of the roll-to-roll device 200 can form a cutting line 20 on the roll material 10 through the cutting module 230. The cutting module 230 moves along the moving line 231 and forms the cutting line 20. In this case, the camera 110 can capture a specified area of ​​the roll material 10 to generate an image, the specified area of ​​the roll material 10 including the formed cutting line 20.

[0043] exist Figure 3 In the process, the first camera 110-1 and the second camera 110-2 can respectively capture images of the roll material 10, including one end and the other end of the first cutting line 20-1 and the second cutting line 20-2. Figure 3 Although there are two cameras 110, it is not limited to this. With one camera 110, it can move along the first axis and capture the first point and the second point.

[0044] The control unit 120 can calculate one or more errors related to the first axis, the second axis intersecting the first axis, and the line angle based on one or more images generated by the camera 110. It can generate control signals to correct the offset of the roll-to-roll device 200 based on the error 121 of the first axis, the error 122 of the second axis, and the line angle error 123, and transmit these signals to the roll-to-roll device 200. The line angle error represents the tilt difference between the first cutting line 20-1 and the second cutting line 20-2. The offset of the roll-to-roll device 200 can be parameter values ​​set for each cutting process.

[0045] More specifically, the control unit 120 can calculate the first axis error 121, the second axis error 122, and the angle error 123 based on the image and the reference line of the field of view (FOV) of the camera 110.

[0046] The error 121 of the first axis can be calculated based on the interval between the first cutting line 20-1 and the second axis reference line. The error 121 of the first axis is used to adjust the roll 10 relative to the first axis, and can be used to adjust the horizontal direction of the roll 10.

[0047] The error of the second axis can be calculated based on the interval between the first cutting line 20-1 and the second cutting line 20-2. The error 122 of the second axis is used to adjust the roll 10 relative to the second axis and can be used to adjust the moving speed of the roll 10.

[0048] Furthermore, the line angle error 123 can be calculated based on the difference between the interval between one end of the first cutting line 20-1 and the other end of the second cutting line 20-2, and the distance between different first and second reference points located on the roll material 10. The first and second reference points can be the center points of the field of view relative to the camera 110, or they can be the first and second positions of the camera 110, but are not limited to these. The line angle error 123 is used to adjust the line angle 232 of the cutting module 230, and can be used to rotate clockwise or counterclockwise. Figure 3 The moving line 231 of the cutting module 230.

[0049] The control unit 120 calculates the error 121 of the first axis based on the first layer image, and can generate a first parameter based on the first axis error 121. The first parameter includes correction information for correcting the offset of the first axis. Furthermore, the control unit 120 can calculate the error 122 of the second axis or the error 123 of the line angle based on the second layer image or the third layer image to generate a second parameter. The second parameter includes correction information for correcting the offset of one or more of the second axis and the line angle.

[0050] In this configuration, a second layer is formed on top of the first layer, and the second layer image may include a first cutting line and a second cutting line. Furthermore, a third layer is formed on top of the second layer, and the third layer image may include a first cutting line, a second cutting line, and a third cutting line.

[0051] As described above, the control unit 120 can generate control signals with different parameters for each cutting process based on the layer images of each cutting process.

[0052] The control unit 120 can generate a first control signal based on a first parameter required for the roll-to-roll device 200 to adjust the horizontal direction of the roll 10 relative to a first axis. The first parameter includes offset correction information related to the first axis generated based on the first layer image in the first cutting process. This can be a control signal to move the roll 10 horizontally according to the correction value, and the first control signal can be applied to the first cutting process.

[0053] Furthermore, the control unit 120 can generate a second control signal required for adjusting the movement speed of the roll 10 by the roll-to-roll device 200 based on a second parameter, the second parameter including offset correction information related to a second axis calculated based on a second layer image in a second cutting process or a third layer image in a third cutting process. This can be a control signal for adjusting the drive speed of the roller 210 used to move the roll 10 according to the correction value. In this case, if the second control signal is generated based on the second layer image, it is applied to the second cutting process; if it is generated based on the third layer image, it can be applied to the third cutting process.

[0054] Furthermore, the control unit 120 can generate a third control signal based on a second parameter required to adjust the line angle 232 of the cutting module 230 included in the roll-to-roll device 200. The second parameter includes offset correction information related to the line angle generated by the second layer image or the third layer image. This allows for adjusting the control signal related to the line angle 232 of the moving line 231 of the cutting module 230 according to the correction value. As described above, if the third control signal is generated based on the second layer image, it is applied to the second cutting process; if it is generated based on the third layer image, it is applied to the third cutting process.

[0055] In this manner, the control unit 120 calculates different parameters based on the layer images corresponding to each cutting process, and generates control signals corresponding to the calculated parameters, transmitting them to the roll-to-roll device 200. Specifically, in the first cutting process, a first control signal is generated to adjust the horizontal direction of the roll material; in the second or third cutting process, a second control signal is generated to adjust the moving speed of the roll material, or a third control signal is generated to adjust the line angle of the cutting module. This allows for real-time adjustment of the setting of each cutting line and the spacing or inclination between the cutting lines, improving the quality of the cutting lines.

[0056] Figure 4 This is a flowchart illustrating a roll-to-roll process correction method according to an embodiment of the present invention.

[0057] The following is for reference Figures 1 to 4 This section describes a roll-to-roll process correction method using the roll-to-roll process correction system 100. The control unit 120 moves at least one camera 110 to an alignment position (step S100), and generates an image including the cutting lines formed on the web 10 using the camera 110 (step S200). Next, a control signal based on a first layer is generated based on the generated image (step S300). Furthermore, a control signal based on a second or third layer is generated based on the generated image (step S400).

[0058] Reference Figure 2 The roll material 10 is divided into a first layer P1, a second layer P2, and a third layer P3. As each layer is sequentially vapor-deposited, a cutting line is formed on each layer. In this case, the process of forming the cutting line on each layer can be represented as a first cutting process, a second cutting process, and a third cutting process, and more than one camera 110 can be provided in each process. Therefore, the present invention can generate different control signals for each cutting process based on the images generated by the cameras 110 provided in each cutting process.

[0059] Next, each step will be explained in detail.

[0060] First, the process of moving at least one camera 110 to the alignment position will be described (step S100). In each cutting process, the control unit 120 can move at least one camera 110 to the alignment position. The alignment position, as the location where the camera 110 is set, can be preset in each cutting process so that the image captured by the camera 110 includes one end or the other end of the cutting line. In this case, if there is one camera 110, the alignment position can represent the position where the camera 110 moves to capture images; if there are two or more cameras 110, the position of each camera 110 can be set.

[0061] Figure 5 This is a flowchart illustrating the process of generating control signals based on the first layer image in the first cutting process (step S300). Figure 6 This is a flowchart illustrating the process of generating a control signal based on a second layer image in a second cutting process or a third layer image in a third cutting process (step S400). Furthermore, Figure 7 An example diagram illustrating the formation of a roll of material with the first to third cutting lines. Figures 8 to 10 For the purpose of explaining the formation Figure 7 An example diagram illustrating the process from the first cutting line to the third cutting line.

[0062] like Figure 7 As shown, during the process of forming the first cutting line 21, the second cutting line 22 and the third cutting line 23 according to the first setting structure, the process of generating control signals based on the first layer (step S300) and the process of generating control signals based on the second or third layer (step S400) will be described as examples.

[0063] The following is for reference Figure 5 and Figure 8 The process of generating control signals based on the first layer in the first cutting process is described (step S300). In this case, the camera 110 is divided into two cameras, namely the first camera 110-1 and the second camera 110-2, and each camera 110 can capture different positions of the roll material 10.

[0064] like Figure 8 As shown in part (a), the control unit 120 receives a first layer image with the first cutting line 21 formed thereon (step S310), and calculates the error 121 of the first axis based on the first layer image (step S320). (Refer to...) Figure 8 In part (b), the error 121 of the first axis can be calculated based on the second axis reference line 112 related to the first layer image generated by the first camera 110-1 and the field of view of the first camera 110-1.

[0065] Subsequently, the control unit 120 can generate a first parameter for correcting the offset of the first axis based on the error 121 of the first axis, and can generate a first control signal required by the roll-to-roll device 200 to adjust the horizontal direction of the roll 10 based on the first parameter (step S330). The first parameter may include correction information related to the first axis, which is the horizontal direction of the roll 10, and the first control signal may be a control signal for moving the roll 10 horizontally according to the correction value.

[0066] For example, in Figure 8 In part (b), the first axis error 121 is calculated to be 217. If the interval between the first cutting line 21 and the second axis reference line 112 is set to 150, the first parameter may include correction information of +67. The first control signal may represent a signal that moves the roll 10 relative to the first axis according to the correction value corresponding to +67.

[0067] If the first control signal is applied to the roll-to-roll device 200, the cutting line formed after the formation of the corresponding first cutting line 21 can be separated from the second axis reference line 112 by a set interval. For reference, in Figure 8 The cutting line does not appear in the first layer image captured by the second camera 110-2, and is therefore omitted.

[0068] The following is for reference Figure 6 , Figure 9 and Figure 10 The process of generating control signals based on the third layer image in the third cutting process is described (step S400).

[0069] Figure 6 This is a flowchart illustrating the process of generating control signals based on the second or third layer (step S400). See also... Figure 6 and Figure 9 The process of generating control signals based on the third layer is explained (step S400). In this case, Figure 7 The purpose of omitting the second layer image and using the third layer image in the embodiment is that, although the second layer image includes the first cutting line 21 and the second cutting line 22, the shapes of the first cutting line 21 and the second cutting line 22 are different and cannot be used as a reference for each other.

[0070] Figure 9 Related to the third layer, which is formed above the first and second layers, the third layer image can encompass the entire range from the first to the third cutting line. For example... Figure 9As shown in parts (a) and (b), the control unit 120 receives a third-layer image from the first camera 110-1 and the second camera 110-2 (step S410), and calculates one or more of a second-axis error 122 and a line angle error 123 based on the third-layer image (step S420). The second-axis error 122 relates to the interval between the second cutting line 22 and the third cutting line 23, and the line angle error 123 relates to the tilt difference between the second cutting line 22 and the third cutting line 33.

[0071] The following is for reference Figure 9 and Figure 10 Explain the process of calculating the second axis error 122 and the line angle error 123 (step S420).

[0072] First, the process of calculating the second axis error 122 is explained. The second axis error 122-1 related to one end of the second cutting line 22 and the third cutting line 33 is calculated based on the third layer image captured by the first camera 110-1 (part (a)) (as shown in part (c)). The second axis error 122-2 related to the other end of the second cutting line 22 and the third cutting line 33 can be calculated based on the third layer image captured by the second camera 110-2 (part (b)) (as shown in part (d)). In this case, one of the second axis error 122-1 at one end and the second axis error 122-2 at the other end can be calculated as the second axis error 122 based on preset conditions. For example, the relatively shorter length between the second axis error 122-1 at one end and the second axis error 122-2 at the other end can be set as the second axis error 122.

[0073] Next, the process of calculating the line angle error 123 is explained. If the second axis error 122-1 at one end is the same as the second axis error 122-2 at the other end, it indicates that there is no line angle error 123. Conversely, if the second axis error 122-1 at one end is different from the second axis error 122-2 at the other end, it indicates that a line angle error 123 exists. This can be achieved through methods such as... Figure 10 The line angle error 123 is calculated as shown. In this case, the difference in the camera center points can be the distance between the center point 113-1 of the first camera 110-1 and the center point 113-2 of the second camera 110-2. For example... Figure 9 As shown, the second axis error 122-1 at one end is 82, and the second axis error 122-2 at the other end is 75. Therefore, in Figure 10 In the middle, the difference in the second axis error is 7. Based on this, the line angle error 123 can be calculated.

[0074] Subsequently, the control unit 120 can generate a second parameter based on the calculated second axis error 122 and the preset interval between the second cutting line 22 and the third cutting line 23, and can generate a second control signal for the roll-to-roll device 200 to correct the moving speed of the roll 10 based on the second parameter (step S430). The second parameter may include correction information related to the moving speed of the roll 10, and the second control signal may be a control signal that increases or decreases the moving speed of the roll 10 according to the correction value.

[0075] For example, in Figure 9 In this process, the second axis error 122 is calculated as 75, the shorter of the second axis error 122-1 at one end and the second axis error 122-2 at the other end. If the preset interval between the second cutting line 22 and the third cutting line 23 is 70, then the second parameter can be set to +5. The second control signal can represent a signal that increases the moving speed of the roll 10 by the corresponding speed correction value of +5. The second control signal is applied to the third cutting process, in which the interval between the second cutting line 22 and the third cutting line 23 can be adjusted as the moving speed of the roll is adjusted to +5.

[0076] Furthermore, the control unit 120 can generate a second parameter based on the calculated line angle error 123, and can generate a third control signal based on the second parameter for correcting the line angle of the cutting module (step S440). The second parameter may include correction information related to the line angle of the cutting module, and the third control signal may be a control signal that adjusts the line angle of the cutting module according to the correction value.

[0077] For example, in Figure 9 If the line angle error 123 is calculated to be 5° based on the second axis error 122-1 (80) at one end and the second axis error 122-2 (75) at the other end, it means that the third cutting line 23 is inclined at 5° compared to the second cutting line 22. Therefore, the second parameter can be set to -5°. The third control signal can be a signal that adjusts the line angle of the cutting module according to the corresponding correction value of -5°. The third control signal is applied to the third cutting process, in which the inclination of the third cutting line 23 can be adjusted to be the same as that of the second cutting line 22 as the line angle of the cutting module is adjusted to -5°.

[0078] As mentioned above, based on Figure 9 The second and third control signals of the third layer image can be applied to the third cutting process of forming the third cutting line 23. Thus, the formed third cutting line 33 is separated from the second cutting line 22 by a specified distance and can be inclined at the same angle as the second cutting line 22.

[0079] Additionally, refer to Figure 9In part (c), the first control signal can be generated based on the first axis error 122 between the second cutting line 22 and the second axis reference line 112 and the first axis error 122 between the third cutting line 23 and the second axis reference line 112, which can make one end of the second cutting line 22 and the other end of the third cutting line 33 the same.

[0080] In this way, the roll-to-roll process correction method of the present invention calculates the first axis error using the first layer image, thereby adjusting the horizontal position of the roll material. Furthermore, the second axis error and line angle error can be calculated using the second or third layer image, thereby adjusting not only the roll material movement speed but also the line angle of the cutting module. Therefore, in each cutting line process, the cutting lines of each layer can be corrected based on different parameters.

[0081] The following is for reference Figures 11 to 14 This describes the entire process of the roll-to-roll calibration method.

[0082] like Figure 11 As shown, during the process of forming the first cutting line 21, the second cutting line 22, and the third cutting line 23 according to the second configuration structure, the roll-to-roll process is corrected using images of each layer. In this case, a first camera 110-1 and a second camera 110-2 are provided. The first camera 110-1 generates an image including one side of the cutting line, and the second camera 110-2 generates an image including the other side of the cutting line.

[0083] Figure 12 The first cutting process of forming a first cutting line in the first layer is shown. In the first cutting process, one side image (a) and the other side image (b) of the first cutting line 21 can be received from the first camera 110-1 and the second camera 110-2 respectively (step S310). The first axis error 121 can be calculated based on the one side image (a) and the second axis reference line 112 with the field of view of the first camera 110-1 as a reference (step S320). Moreover, a first parameter is generated based on the first axis error 121, and a first control signal required to adjust the horizontal direction of the roll material 10 relative to the first axis in the first cutting process can be generated based on the first parameter (step S330).

[0084] Figure 13 The second layer in the second cutting process is shown. In the second cutting process, one side image (a) and the other side image (b) of the first cutting line 21 and the second cutting line 22 are received from the first camera 110-1 and the second camera 110-2 respectively (step S410). Moreover, the second axis error 122 and the line angle error can be calculated based on (a) and (b) (step S420).

[0085] In this case, for the second axis error 122, as shown in part (c), the second axis error 122-1, which is the interval between the first cutting line 21 and the second cutting line 22 on one side, can be calculated; and as shown in part (d), the second axis error 122-2, which is the interval between the first cutting line 21 and the second cutting line 22 on the other side, can be calculated. Moreover, one of them can be set as the second axis error 122.

[0086] And, as Figure 10 As shown, the line angle error can be calculated based on the second axis error 122-1 and the second axis error 122-2 on the other side.

[0087] In this way, based on the calculated second axis error 122 and line angle error 123, a second parameter is generated, which includes offset correction information related to one or more of the second axis or line angle. A second control signal required to correct the moving speed of the roll 10 in the second cutting process can be generated based on the second parameter (step S430), or a third control signal required to correct the line angle of the cutting module in the second cutting process can be generated (step S440).

[0088] In this case, the second cutting process, which reflects the second control signal and the third control signal, can form the second cutting line 22 based on the first cutting line 21.

[0089] Additionally, the first axis error 121 of the second cutting line 22 is calculated, and a first control signal can be generated based on this, so that one side of the first cutting line 21 and one side of the second cutting line 22 become the same.

[0090] Figure 14 The third layer in the third cutting process is shown. In the third cutting process, one side image (a) and the other side image (b) of the first cutting line 21, the second cutting line 22 and the third cutting line 23 are received from the first camera 110-1 and the second camera 110-2 respectively (step S410). The second axis error 122 and the line angle error between the second cutting line 22 and the third cutting line 23 can be calculated based on (a) and (b) (step S420).

[0091] Furthermore, based on the second axis error 122 and line angle error 123 between the second cutting line 22 and the third cutting line 23, a second parameter is generated, which includes offset correction information related to one or more of the second axis or line angle. Based on the second parameter, a second control signal required to correct the moving speed of the roll 10 in the second cutting process can be generated (step S430), or a third control signal required to correct the line angle of the cutting module in the second cutting process can be generated (step S440).

[0092] In this case, the third cutting process, which reflects the second control signal and the third control signal, can form the third cutting line 23 based on the second cutting line 22.

[0093] The above description is merely illustrative of the technical concept of this embodiment. Those skilled in the art can make various modifications and variations without departing from the essential characteristics of this embodiment. Therefore, this embodiment is for illustrative purposes only and is not intended to limit the technical concept of this embodiment. Such embodiments do not limit the scope of the technical concept of this embodiment. The protection scope of this embodiment should be interpreted based on the following claims, and all technical concepts within the equivalent scope of these claims fall within the protection scope of this embodiment.

Claims

1. A roll-to-roll process correction system for controlling a roll-to-roll device, characterized in that, include: At least one camera captures images of different locations on the roll material to generate pictures; and The control unit calculates the errors of the first axis, the second axis, and the line angle based on the cutting line included in the image, the reference line of the first axis, and the reference line of the second axis intersecting the first axis. Based on the calculated errors, it generates control signals with different parameters for each process used to form the cutting line on the roll material. The control unit generates a first control signal and a second control signal. The first control signal is used in a first process of forming a first cutting line in the first layer of the roll material, and the second control signal is used in a second process of forming a second cutting line in a second layer stacked on the first layer. The first control signal and the second control signal are generated based on different parameters.

2. The roll-to-roll process correction system according to claim 1, characterized in that, The camera generates an image that includes one end of the cut line formed on the roll material.

3. The roll-to-roll process correction system according to claim 1, characterized in that, The roll material comprises a first layer, a second layer, and a third layer stacked sequentially. The control unit generates a first parameter required to correct the offset of the first axis based on the first image of the first layer. The control unit generates a second parameter required to correct the offset of the second axis or the offset of the line angle based on the second image of the second layer or the third image of the third layer.

4. The roll-to-roll process correction system according to claim 3, characterized in that, The control unit generates the first control signal based on the first parameter, and the first control signal includes correction information related to the first axis of the roll in the roll-to-roll device.

5. The roll-to-roll process correction system according to claim 3, characterized in that, The control unit generates the second control signal based on the second parameter, and the second control signal includes correction information related to the roll movement speed of the roll-to-roll device.

6. The roll-to-roll process correction system according to claim 3, characterized in that, The control unit generates a third control signal based on the second parameter. The third control signal includes correction information related to the line angle of the cutting module included in the roll-to-roll device.

7. The roll-to-roll process correction system according to claim 3, characterized in that, The control unit calculates the error of the first axis based on the interval between the first cutting line formed in the first layer and the reference line of the second axis.

8. The roll-to-roll process correction system according to claim 3, characterized in that, The control unit calculates the error of the second axis based on the interval between the second cutting line formed in the second layer and the third cutting line formed in the third layer.

9. The roll-to-roll process correction system according to claim 3, characterized in that, The control unit calculates the error of the line angle based on the interval between the second cutting line formed in the second layer and the third cutting line formed in the third layer, and the distance between the first reference point and the second reference point located on the roll material, which are different from each other.

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