Preparation method and device of UV type touch screen

Abstract

The invention discloses a UV type touch screen preparation method and device, and relates to the technical field related to touch screens, and the method comprises the steps: recognizing a production work order of a target touch screen, and determining a production process based on the characteristics of the touch screen; carrying out element control precision constraint on the core process, and determining a control constraint condition; a main console is additionally arranged, a single-thread equipment group is connected in series, control constraint conditions and production procedures are programmed, and a programmable gate array is constructed; and assisting the programmable gate array to control the preparation of the target touch screen. The technical problems of low touch screen process precision, unstable product quality and low production efficiency caused by difficulty in precise cooperative control of process parameters of a preparation core process and lack of a dynamic monitoring and adjusting mechanism in existing touch screen preparation are solved. The technical effect of improving the touch screen preparation process precision, the product quality stability and the production efficiency is achieved.

Description

Technical Field

[0001] The present application relates to the technical field related to touch screens, and in particular to a method and device for preparing a UV type touch screen. Background Art

[0002] As the core interactive component of modern electronic products, touch screens are widely used in smart phones, tablet computers, car display devices and other fields. With the continuous upgrading of market demand, the functional complexity and refinement requirements of touch screens have been significantly improved, and its manufacturing technology also faces many challenges. The current touch screen preparation process usually adopts a roll-to-roll production method, and realizes structural function integration through multi-layer composite. In the production process of touch screens, key processes such as conductive silver path printing, laser etching and film cutting have high parameter accuracy requirements, and traditional equipment is difficult to achieve precise control of these parameters, resulting in large fluctuations in product quality and affecting the yield rate. In traditional production methods, most equipment operates independently and lacks unified collaborative control methods, which easily leads to process dislocation or process discontinuity, thereby increasing the defective rate and production costs. The existing production process lacks real-time monitoring and dynamic adjustment methods, and the response efficiency is low, which is difficult to meet the production needs of high efficiency and low loss.

[0003] Therefore, in the current touch screen manufacturing related technologies, the process parameters of the core manufacturing process are difficult to accurately coordinate and control, and there is a lack of dynamic monitoring and adjustment mechanism, which leads to technical problems such as low touch screen process precision, unstable product quality and low production efficiency. Summary of the invention

[0004] The present application provides a UV touch screen preparation method and device, which solves the technical problems existing in the existing touch screen preparation, that is, the process parameters of the core preparation process are difficult to accurately coordinate and control and lack a dynamic monitoring and adjustment mechanism, resulting in low touch screen process precision, unstable product quality and low production efficiency, and achieves the technical effect of improving the touch screen preparation process precision, product quality stability and production efficiency.

[0005] The present application provides a method for preparing a UV touch screen, the method comprising: identifying a production work order of a target touch screen, determining a production process based on touch screen characteristics, wherein the touch screen characteristics include structural characteristics and performance characteristics, and the production process is a roll-to-roll multi-layer composite process; for the production process, performing element control precision constraints on core processes, and determining control constraint conditions, wherein the core processes at least include a conductive silver path printing process, a laser etching process, and a film cutting process; adding a main control console, and connecting a single-threaded device group in series, programming the control constraint conditions and the production process, and constructing a programmable gate array, wherein the programmable gate array is built into the main control console; assisting the programmable gate array to perform preparation control of the target touch screen, wherein the control dimensions include main line processing, dynamic monitoring, and misalignment adjustment.

[0006] In a possible implementation, a production process based on the touch screen characteristics is determined, and the following processing is also performed: identifying the touch screen characteristics and determining the modification characteristics; interactively initializing the process, optimizing the modification characteristics based on process correlation, and determining the optimized process; and segmenting the optimized process to obtain the production process.

[0007] In a possible implementation, the control precision of the elements is constrained for the core process, the control constraint conditions are determined, and the following processing is performed: a relationship table between control stability and control precision is set, wherein the control precision is the adjustment scale under the current process precision; the control elements are traversed, and the control fluctuation trend is mined in combination with the historical control records to determine the stability coefficient of the control elements; the stability coefficient is identified, the relationship table is traversed for matching, and the matching control precision is determined; the matching control precision and the element process precision are superimposed and integrated as the control constraint conditions.

[0008] In a possible implementation, the constructing of the programmable gate array also performs the following processing: configuring programmable blocks, wherein the programmable blocks correspond one-to-one to the production process; based on the production process and the control constraints, converting and determining the logic program and initializing the programmable blocks, based on the serial order relationship, combining the programmable blocks to determine the first programmable control array.

[0009] In a possible implementation, the programmable gate array is constructed to further perform the following processing: setting a dynamic monitoring target, wherein the dynamic monitoring target is determined based on the transmission-tension-alignment trinity; based on the dynamic monitoring target, determining a boundary condition based on a target deviation threshold; and constructing a second programmable monitoring block for the dynamic monitoring target and the boundary condition.

[0010] In a possible implementation, the construction of the programmable gate array also performs the following processing: determining the misalignment vector based on the alignment monitoring deviation; determining the linear relationship between the misalignment vector and the control parameter, and determining the reset function, wherein the linear relationship includes a parameter control relationship and a time limit relationship, and the time limit relationship constrains the defective jump amount; based on the reset function, constructing a third programmable control block; integrating the first programmable control array, the second programmable monitoring block and the third programmable control block to generate the programmable gate array.

[0011] In a possible implementation, after the target touch screen preparation control is performed, the following processing is also performed: simulating the touch screen electric field, performing touch screen current flow test and touch screen response calculation, and determining touch screen response data, wherein, through the target touch screen, a surface coupling capacitor is generated on the touch screen to promote current flow; performing surface image acquisition and recognition detection to determine defect detection data; generating a quality inspection form based on the touch screen response data and the defect detection data; setting a preset frequency, mining common defects based on the quality inspection form, and reversely guiding the preparation management of the target touch screen.

[0012] The present application also provides a UV touch screen preparation device, including: a production process determination module, used to identify the production work order of the target touch screen, and determine the production process based on the touch screen characteristics, wherein the touch screen characteristics include structural characteristics and performance characteristics, and the production process is a roll-to-roll multi-layer composite process; a control constraint condition determination module, used to perform element control accuracy constraints on the core process for the production process, and determine the control constraint conditions, wherein the core process at least includes a conductive silver path printing process, a laser etching process and a film cutting process; a programmable gate array construction module, used to add a main control console, and connect a single-threaded device group in series, program the control constraints and the production process, and construct a programmable gate array, wherein the programmable gate array is built into the main control console; a target touch screen preparation management and control module, used to assist the programmable gate array to perform the target touch screen preparation management and control, wherein the management and control dimensions include main line processing, dynamic monitoring and offset adjustment.

[0013] Through the UV touch screen preparation method and device proposed in this application, it is intended to identify the production order of the target touch screen and determine the production process based on the characteristics of the touch screen; constrain the precision of the control elements of the core process and determine the control constraint conditions; add a main control console and connect the single-threaded equipment group in series to program the control constraint conditions and the production process to build a programmable gate array; assist the programmable gate array to control the preparation of the target touch screen. It solves the technical problems that the process parameters of the core preparation process of the existing touch screen preparation are difficult to accurately coordinate and control and lack a dynamic monitoring and adjustment mechanism, resulting in low touch screen process precision, unstable product quality and low production efficiency, and achieves the technical effect of improving the touch screen preparation process precision, product quality stability and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the embodiment of the present disclosure, the accompanying drawings of the embodiment of the present disclosure will be briefly introduced below. A flow chart is used in the present application to illustrate the operations performed by the device according to the embodiment of the present application. It should be understood that the previous or following operations are not necessarily performed precisely in order. On the contrary, various steps can be processed in reverse order or simultaneously as needed. At the same time, other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0015] Figure 1 A schematic diagram of a process for preparing a UV touch screen provided in an embodiment of the present application;

[0016] Figure 2 A schematic diagram of the structure of a UV touch screen preparation device provided in an embodiment of the present application.

[0017] Explanation of reference numerals: production process determination module 10 , control constraint condition determination module 20 , programmable gate array construction module 30 , target touch screen preparation control module 40 . DETAILED DESCRIPTION

[0018] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0019] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0020] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict, and the terms "first\second" involved are merely to distinguish similar objects and do not represent a specific ordering of objects. The terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, device, product, or server that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or modules that are not clearly listed or inherent to these processes, methods, products, or devices. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of this application. The terms used herein are for the purpose of describing the embodiments of the present application only.

[0021] The present application embodiment provides a method for preparing a UV touch screen, such as Figure 1 As shown, the method includes:

[0022] Step S100, identifying a production work order of a target touch screen, and determining a production process based on touch screen characteristics, wherein the touch screen characteristics include structural characteristics and performance characteristics, and the production process is a roll-to-roll multi-layer composite process.

[0023] Preferably, identifying the production work order of the target touch screen and determining the production process based on the characteristics of the touch screen means clarifying the production requirements through its production plan or production task sheet (work order) according to the specific needs of the target touch screen, and further selecting a suitable manufacturing process flow in combination with the characteristics of the touch screen. Specifically, the production work order of the target touch screen is a production plan document that details the specification parameters, performance requirements and production quantity of the touch screen to be produced. By identifying the work order, the design requirements of the target touch screen can be obtained, such as the size, material, touch mode (capacitive or resistive), transparency, conductivity, flexibility and other key parameters of the touch screen. The characteristics of the touch screen include structural characteristics and performance characteristics, wherein the structural characteristics include the hierarchical structure and physical composition of the touch screen, such as the cover film (Cover Film), transparent conductive layer, substrate layer, protective layer, optical adhesive and the thickness of each layer, flexibility (bendability of flexible touch screen) and surface treatment process (such as anti-fingerprint coating), etc. The performance characteristics include touch response speed, transparency, resistance value, conductivity of conductive silver path, laser etching accuracy, optical properties (transmittance, reflectivity) and mechanical strength, etc. The production process refers to the roll-to-roll (R2R) multi-layer composite process, where roll-to-roll production is a continuous manufacturing process, which unrolls the flexible substrate from the roll form and passes through multiple production processes to finally roll into a finished roll. Multi-layer composite refers to the process of stacking and processing different functional layers layer by layer through multiple processes in the production process to form a complete touch screen structure.

[0024] Step S100 further includes step S110, identifying the touch screen characteristics and determining the modified features; step S120, interactively initializing the process, optimizing the modified features based on process correlation, and determining the optimized process; step S130, segmenting the optimized process to obtain the production process.

[0025] Preferably, the identification of touch screen characteristics collects the structural characteristics (such as the material type, thickness requirements and mechanical properties of the multilayer film), functional characteristics (such as transmittance, surface conductivity, anti-reflection performance and anti-fouling ability) and appearance characteristics (such as film gloss, surface flatness, etc.) of the target touch screen, and then determines the modified characteristics, that is, according to the above characteristics, the touch screen performance is enhanced by adjusting or adding functional layers through specific processes, such as anti-fouling treatment of the film surface, hydrophobic and oleophobic coating treatment on the film surface, improving the anti-fouling ability, and making the touch screen surface easy to clean; adding functional layers, adding optical enhancement layers (such as anti-glare layers or anti-reflection layers), adding hardening layers to improve surface scratch resistance, adding anti-blue light layers or infrared shielding layers, and optimizing the optical performance and safety of the screen.

[0026] Preferably, the interactive initial process design refers to selecting the best combination from a variety of alternative processes according to the modified characteristics of the touch screen, and conducting experimental adjustments, such as anti-fouling treatment including plasma surface modification and solution dipping, functional layer deposition including physical vapor deposition (PVD) and chemical vapor deposition (CVD), and printing methods including screen printing and inkjet printing; optimizing and adjusting the specific implementation process of the modified characteristics according to the process correlation (the influence and mutual restriction between different processes), and determining the optimized process, such as ensuring that the anti-fouling coating has good adhesion to the substrate layer, optimizing the stacking order when adding functional layers, and avoiding interlayer interference or Performance is reduced; finally, the optimized process is segmented. Specifically, according to the process optimization results, the processing steps are further subdivided into different stages to adapt to the performance requirements and production line conditions of different touch screens. For example, the integrated development and etching process, that is, the development and etching operations are completed in the same device, which is suitable for simple circuit patterns or efficient production needs; the development and etching separation process, in which the development and etching processes are completed separately in different devices, is suitable for high-precision or multi-layer composite touch screens, and finally the touch screen production process is obtained, including surface treatment process, conductive silver path printing process, laser etching process, film cutting process and detection and correction process.

[0027] Step S200, for the production process, element control accuracy constraints are performed on the core process to determine the control constraint conditions, wherein the core process at least includes a conductive silver path printing process, a laser etching process and a film cutting process.

[0028] Preferably, during the production process, key parameters of the core processes (conductive silver path printing, laser etching, and film cutting) are precisely controlled, and corresponding control constraints are determined to ensure product quality and process stability. Specifically, the core production processes of the touch screen include a conductive silver path printing process, a laser etching process, and a film cutting process, that is, a conductive circuit is formed on the surface of the substrate through a high-precision printing process, and the silver path or conductive film is precisely trimmed using laser etching technology to form a circuit pattern. Each functional layer is cut into a specific size and precisely fitted to ensure that the optical and electrical properties between the layers match, and the substrate tension, pattern accuracy, composite position, and superposition effect are monitored in real time to ensure processing quality, effectively supporting high-precision and high-efficiency touch screen manufacturing. Among them, the conductive silver circuit printing process refers to the formation of a high-precision conductive silver circuit pattern on the surface of the touch screen substrate by screen printing or inkjet printing, and the control constraints are the ink layer thickness (coating thickness of the silver paste), pattern resolution (line resolution and pattern clarity), printing accuracy (positioning error of the silver circuit on the substrate) and drying and curing conditions (adjusting temperature and time parameters to optimize the conductivity and adhesion of the silver circuit); the laser etching process refers to the high-precision patterning of the conductive layer or substrate by laser etching technology, which is used to trim the conductive silver circuit or form a circuit structure on the conductive film. The control constraints include laser power (laser power output), etching path accuracy (moving trajectory and speed of the laser etching head), etching depth and thermal effect control (heat generated by the laser during etching); the film cutting process refers to cutting the completed touch screen functional layer to a specified size while ensuring smooth edges and no gaps. The control constraints include cutting accuracy (blade positioning accuracy), edge quality (the cutting edge is flat and free of burrs), tension control (adjusting the roll-to-roll substrate tension to avoid substrate wrinkles or misalignment during cutting) and repeated positioning error (reducing positioning errors during multiple cutting processes).

[0029] Step S200 further includes step S210, setting a relationship table between control stability and control accuracy, wherein the control accuracy is an adjustment scale under the current process accuracy; step S220, traversing the control elements, combining historical control records, mining the control fluctuation trend, and determining the stability coefficient of the control element; step S230, identifying the stability coefficient, traversing the relationship table for matching, and determining the matching control accuracy; step S240, superimposing the matching control accuracy and the element process accuracy, and integrating them as the control constraint condition.

[0030] Preferably, control stability reflects the degree of parameter fluctuation during process control, which is usually quantified by statistical analysis of historical data fluctuation range, mean deviation and other indicators. For example, high stability means that the parameter fluctuation range is small and the process control is relatively stable. Control accuracy refers to the smallest unit (adjustment scale) that can be adjusted within the current set accuracy range of the process parameter, such as the printing thickness adjustment accuracy of ±0.01mm. For example, a certain control parameter or element is easily affected by environmental vibration, etc., and the impact amplitude is large. On the basis of the current accuracy standard, a certain amplitude is increased to perform production constraints with higher accuracy, so that even if there is a certain control fluctuation in the actual process, it is still within the normal quality standard. A mapping relationship table is established based on different stability levels (such as high, medium, and low) and corresponding control accuracies, for example:

[0031] Control stability level Recommended control accuracy Allowable fluctuation range High stability +0.01mm +0.02mm Medium stability +0.03mm +0.05mm Low stability +0.05mm +0.1mm

[0032] This relationship table is used to dynamically match control accuracy during the production process to avoid using overly high-precision adjustments under low-stability conditions, which may lead to increased process fluctuations, or waste adjustment resources under high-stability conditions.

[0033] Preferably, the control factor refers to the key parameter that needs to be precisely controlled in the production process, such as the printing thickness of the conductive silver path, the laser etching depth, the positioning accuracy of the film cutting head, etc. By traversing the control factors and combining the historical control records (such as the adjustment records of the parameters, the deviation between the actual value and the target value, the fluctuation situation, etc.), the control fluctuation trend is excavated, that is, the fluctuation law of the control factors in the historical data is analyzed, such as whether there is a periodic fluctuation (such as the decrease in accuracy due to equipment wear), whether it is interfered by external factors (such as the change of temperature and humidity affects the printing thickness of the conductive silver path), and then the stability coefficient of the control factor is determined. Specifically, according to the fluctuation trend, the stability of the control factor is calculated using standard deviation analysis (such as a value between 0 and 1, 1 is completely stable, and 0 is extremely unstable); finally, the stability coefficient is identified, and the key factors are traversed. The system table is matched to determine the matching control accuracy, that is, the corresponding control accuracy is found in the relationship table. For example, if the stability coefficient is 0.8 (high stability), the matching control accuracy is ±0.01mm; if the stability coefficient is 0.4 (medium stability), the matching control accuracy is ±0.03mm; the matching control accuracy is combined with the process accuracy (the setting accuracy of the process itself, such as the design tolerance range of the conductive silver path printing thickness is ±0.02mm) as the final control constraint condition, which is used for the parameter range actually adjusted in the production process, taking into account both the process requirements and the balance of control stability. For example, the matching control accuracy is ±0.01mm, the process accuracy is ±0.02mm, and the final control constraint condition after superposition is ±0.015mm (the comprehensive value is obtained by weight calculation).

[0034] Step S300, adding a main console and connecting the single-threaded device group in series, programming the control constraints and the production process, and constructing a programmable gate array, wherein the programmable gate array is built into the main console.

[0035] Preferably, a main control console is added, and a single-threaded device group is connected in series, and the control constraints and production processes are programmed, that is, a programmable gate array is constructed by combining software and hardware to realize centralized management and intelligent control of the entire touch screen production process. Specifically, the main control console is the core control node of the entire production line, which is used to centrally manage and coordinate the operating status, process parameters and process control of multiple production equipment. It can collect sensor data (such as temperature, pressure, speed, tension, etc.) in the production line in real time, analyze the process status, and uniformly schedule and optimize the production process to avoid process dislocation or inefficiency caused by independent operation of equipment; a single-threaded device group refers to a device group arranged in process sequence during the preparation of the touch screen, including conductive silver path printing equipment, laser etching equipment, film cutting equipment, etc. The process of each device group is continuous in time and process, but the equipment itself operates independently. The main control console is connected in series with the single-threaded device group to achieve synchronization of the operating status and process parameters of each device, avoid disconnection between equipment operations or process conflicts, and dynamically adjust the operating sequence and interval time of the equipment, transforming the traditional decentralized equipment management mode into centralized and programmed collaborative operation, thereby improving the overall efficiency of the production line.

[0036] Preferably, the programming of the production process refers to programming and solidifying the control elements of the production process (such as the ink layer thickness of the conductive silver path printing, the path accuracy of the laser etching, the size requirements of the film cutting, etc.) into the main control console to realize the automated management of each process. Specifically, the control constraints (such as equipment parameters, operating speed, and accuracy requirements) are converted into program logic, and the process sequence of the production process is defined in a program manner, so that the production line can automatically adapt to different touch screen characteristics, and realize efficient automation and stabilization of the touch screen production process; a field programmable gate array (FPGA) is a reprogrammable hardware logic circuit for realizing efficient parallel computing and real-time response control, and is suitable for complex production line logic and high-precision process control. Specifically, the programmable gate array can quickly process real-time data from each equipment group, such as sensor signals and process parameter feedback, and the logic control program of the production process is embedded in the programmable gate array to realize low-latency and high-reliability process control through hardware. The programmable gate array has a built-in dynamic adjustment algorithm to quickly adjust the equipment operating parameters (such as tension and speed) according to the deviations monitored in real time during the production process.

[0037] Step S300 further includes step S310, configuring programmable blocks, wherein the programmable blocks correspond one-to-one to the production processes; step S320, based on the production processes and the control constraints, converting and determining the logic program and initializing the programmable blocks, combining the programmable blocks based on the serial order relationship, and determining the first programmable control array.

[0038] Preferably, multiple programmable blocks are configured, each programmable block corresponds to a production process, and is used to manage and execute the control logic of the process, wherein the programmable block can be a hardware logic unit (such as an FPGA logic module), and each block internally encapsulates parameters, logic control rules, and real-time adjustment logic related to the production process. Then, according to the specific requirements of each production process (such as the ink layer thickness requirements for conductive silver path printing, the path accuracy requirements for laser etching), combined with the dynamically adjusted control constraints (for example, the final parameter range calculated in combination with the stability coefficient), the process requirements and control constraints are converted into a programmable logic language (such as VHDL, Verilog), and a corresponding control program is generated. For example, the logic program for conductive silver path printing may include determining the ink thickness. Whether the layer thickness is within the target range, if it exceeds the range, adjust the printing head movement speed and ink output. Initializing the programmable block is to load the generated logic program into the corresponding programmable block, so that it has the ability to execute the corresponding process control; according to the sequence of production processes, connect each programmable block to form a complete production control chain. The conductive silver path printing process programmable block is responsible for the control of the printing path and ink layer thickness, the laser etching process programmable block is responsible for the management of etching accuracy and depth, and the film cutting process programmable block is responsible for the adjustment of size and cutting path. Logically link each block according to the process sequence to form an overall control logic, and then determine the first programmable control array to achieve seamless connection between production processes and ensure the continuity of control logic.

[0039] Step S300 further includes step S330, setting a dynamic monitoring target, wherein the dynamic monitoring target is determined based on the trinity of transmission-tension-alignment; step S340, determining a boundary condition based on a target deviation threshold based on the dynamic monitoring target; and step S350, constructing a second programmable monitoring block for the dynamic monitoring target and the boundary condition.

[0040] Preferably, the dynamic monitoring target is determined based on the trinity of transmission, tension and alignment. The dynamic monitoring target is the key parameter that needs to be monitored and controlled in real time during the production process to ensure the stability and accuracy of production. Among them, transmission refers to the conveying state of materials or substrates in the production process, including the stability of the conveying speed, position and conveying path. The monitoring target is to ensure that the material does not deviate or stagnate during the conveying process, and the conveying speed is uniform and synchronized with the production process; tension refers to the tension of the substrate in roll-to-roll production. Excessive tension may cause material breakage, while too low tension may cause wrinkles or inaccurate position. The monitoring target is to ensure that the substrate tension always remains within a preset range; alignment refers to the precise alignment between multi-layer functional films or circuit patterns, especially when it involves processes such as conductive silver path printing and laser etching, alignment accuracy is particularly important, and the monitoring target is to ensure that the processing positions of different processes are accurate and avoid superposition deviations.

[0041] Preferably, based on the dynamic monitoring target, the boundary conditions based on the target deviation threshold are determined, wherein the target deviation threshold refers to the maximum range within which the monitoring target parameter is allowed to deviate from the set value during the dynamic monitoring process, exceeding which an alarm or automatic adjustment will be triggered, for example, the transmission boundary condition is the allowable transmission speed deviation: ±5% (such as the set speed is 1m / s, the deviation range is 0.95m / s to 1.05m / s), the allowable position offset: ±0.5mm, the tension boundary condition is the allowable tension deviation: ±2N (such as the tension setting value is 20N, the allowable range is 18N to 22N), the alignment boundary condition is the pattern alignment deviation: ±0.1mm (such as the design requirement of high-precision processing of ±0.05mm); by setting the boundary conditions of the deviation threshold, it is possible to determine whether the status of the production process is normal; for the dynamic monitoring target and the boundary conditions, a second programmable monitoring block is constructed, the second programmable monitoring block is a logic module designed for the dynamic monitoring target, and is used to analyze the monitoring data in real time and trigger control instructions.

[0042] Step S300 further includes step S360, determining the misalignment vector based on the alignment monitoring deviation; step S370, determining the linear relationship between the misalignment vector and the control parameter, and determining the reset function, wherein the linear relationship includes a parameter control relationship and a time limit relationship, and the time limit relationship constrains the defective jump amount; step S380, constructing a third programmable control block based on the reset function; step S390, integrating the first programmable control array, the second programmable monitoring block and the third programmable control block to generate the programmable gate array.

[0043] Preferably, in the composite process of roll production, if there is a misalignment error in one, based on program control, problems will arise in the following ones, and there will be errors in the entire roll. Therefore, if a misalignment is detected, the following ones are adjusted according to the control time limit. For example, the control takes two seconds, one second per roll, and the reset of the next one can be guaranteed by control. Then the current and next processed products are marked as defective products. Specifically, high-precision monitoring equipment (such as visual inspection, laser alignment sensor, etc.) is used to capture the difference between the actual position and the target position as the alignment monitoring deviation, such as the translation and rotation errors of the position. The deviation is calculated by the difference and described in vector form to determine the misalignment vector, and then the linear relationship between the misalignment vector and the control parameter is determined, that is, a linear mapping relationship between the misalignment vector and the adjustable parameters (such as motor speed, position control signal, etc.) is established, including the parameter control relationship between the control parameter (such as servo motor speed, mobile platform step value) and the deviation value, and the time limit relationship (define the time constraint of the adjustment to avoid the increase in the number of defective products due to adjustment delay). The parameter control relationship and the time limit relationship are comprehensively determined to determine the reset function for calculating the adjustment amount.

[0044] Preferably, based on the reset function, a third programmable control block is constructed, which is a logic control module for real-time correction of misalignment deviations, and parameter adjustment is performed according to the reset function. Specifically, the third programmable control block receives monitoring data from the second programmable monitoring block, extracts the deviation vector, calculates the correction amount according to the input deviation vector and the control parameters of the equipment, and calls the actuator of the production equipment (such as a stepper motor, a servo motor) to achieve real-time position adjustment, tension adjustment or speed compensation. After correction, the deviation is monitored again to form a closed-loop control to ensure that the adjustment is in place; the first programmable control array, the second programmable monitoring block and the third programmable control block are integrated to form a programmable gate array to achieve highly integrated and automated production control, realize closed-loop control in the production line, ensure seamless connection between dynamic monitoring, process adjustment and process control, and provide real-time control capabilities with high response speed and low latency.

[0045] Step S400, assisting the programmable gate array to perform preparation control of the target touch screen, wherein the control dimensions include main line processing, dynamic monitoring and misalignment adjustment.

[0046] Preferably, the programmable gate array (FPGA) works in conjunction with the main control console to achieve precise control and real-time optimization of the entire touch screen production process. Specifically, the target touch screen is prepared and controlled based on the three control dimensions of main line processing, dynamic monitoring and misalignment adjustment. Main line processing is the core process of the touch screen preparation process, including the processing from substrate unfolding, functional layer superposition to the final finished coil, covering key processes such as conductive silver path printing, laser etching, and film cutting. Specific control includes process logic control, equipment parameter synchronization and quality control. Among them, process logic control ensures that each processing step is strictly executed in accordance with the preset process flow. , avoid process omissions or sequence errors, ensure accurate material flow between each process, and avoid docking problems in the intermediate links; equipment parameter synchronization refers to the dynamic adjustment of the roll-to-roll substrate running speed and tension parameters to match the rhythm of each process, and improve the consistency of the overall process through programmed management of key parameters of each equipment (such as the ink layer thickness of the printing press and the laser etching power); quality control ensures the precise alignment of each layer of functional film and the substrate when superimposed, avoiding the impact of superposition offset on the performance of the final product. During the main line processing, abnormal points are adjusted through real-time data feedback to ensure the smooth execution of the process and the coordination of equipment operation.

[0047] Preferably, dynamic monitoring refers to real-time detection and data collection of all key parameters and operating conditions in the production process in order to promptly detect and respond to abnormalities, including multi-dimensional data collection, real-time feedback mechanism and big data analysis. Specifically, multi-dimensional data collection refers to the dynamic collection of key process parameters such as substrate tension, temperature and humidity, and equipment operating status (trajectory deviation of the laser etching head, position accuracy of the film cutting head, etc.) through built-in sensors and monitoring modules; the real-time feedback mechanism is that when a parameter is monitored to deviate from the preset range (such as the substrate offset exceeds the threshold or the printing thickness exceeds the tolerance range), the abnormal data is immediately fed back to the programmable gate array, and the equipment operating parameters are adjusted through logical calculations or an alarm signal is issued; big data analysis refers to the collection and analysis of historical monitoring data to establish a production model for predicting potential abnormalities and adjusting process conditions in advance. Through real-time monitoring and rapid response, the scrap rate caused by abnormalities in production is reduced.

[0048] Preferably, misalignment adjustment refers to the rapid detection and correction of misalignment problems that occur in equipment or process flows during the linkage of multiple processes to ensure the stable operation of the production line, including equipment misalignment detection, automatic adjustment mechanism and process adaptive adjustment. Among them, equipment misalignment detection refers to the real-time detection of the operating status of each equipment in the production line and the positioning of the workpiece through a high-precision visual inspection system or a displacement sensor. Common misalignments include misalignment of the silver path printing layer and the laser etching layer, and film cutting position offset. Based on the rapid response capability of the programmable gate array, when the misalignment deviation value exceeds the set threshold, the position or operating parameters of the relevant equipment can be adjusted in real time, for example, by adjusting the tension of the winding equipment, correcting the substrate offset, and controlling the position of the film cutting head through a servo motor to correct the cutting error. Process adaptive adjustment refers to combining historical misalignment data and current production parameters to automatically optimize the misalignment threshold and equipment response speed, improve the efficiency of misalignment adjustment, and the adjusted parameters will be synchronized to the main control console in real time for the correction of subsequent processes, thereby improving the rapid detection and adjustment capabilities of multi-process linkage misalignment problems, thereby significantly improving the quality and efficiency of touch screen production.

[0049] Step S400 further includes step S410, simulating the touch screen electric field, performing touch screen current flow test and touch screen response calculation, and determining touch screen response data, wherein a surface coupling capacitance is generated on the touch screen through the target touch screen to promote current flow; step S420, performing surface image acquisition and recognition detection, and determining defect detection data; step S430, generating a quality inspection form based on the touch screen response data and the defect detection data; step S440, setting a preset frequency, mining common defects based on the quality inspection form, and reversely guiding the preparation management of the target touch screen.

[0050] Preferably, simulating the electric field of the touch screen refers to generating an electric field distribution model of the touch screen by simulating the position, pressure and shape of different touch points on the surface of the touch screen based on the working principle of the capacitive screen. The surface coupling capacitance change generated by the touch screen is used to simulate the current change generated when the user touches the screen, so as to test the current flow performance of the touch screen and ensure that the screen can respond quickly and accurately when touched. The touch screen response calculation refers to calculating the response time, response accuracy and signal strength of the screen when it is touched at different positions as touch screen response data, wherein the response time is the time interval from the touch operation to the output of the screen signal, the signal strength is the variation amplitude of the coupling capacitance near the touch point, and the signal uniformity is the consistency of the touch signal in different areas; then a high-resolution camera or optical scanning device is used to comprehensively scan the surface of the touch screen to capture an image of the screen surface, and then computer vision technology (such as image segmentation, feature extraction and defect recognition) is used to process and analyze the collected image to determine the defect detection data, including the location and type of the defect. and severity, combined with touch screen response data and defect detection data, to generate a quality inspection form reflecting the overall quality of the touch screen, including touch screen performance indicators, defect indicators (number of surface scratches, conductive line defects, proportion of optical uneven areas, etc.) and the judgment result of whether the touch screen is qualified; set a preset frequency, that is, conduct quality inspection on a batch of touch screens at a certain ratio, analyze common problems in batch production, that is, find out frequent defects and their possible causes by analyzing the defect data in the quality inspection form. Specifically, count the frequency and distribution of each defect, and trace the possible sources of common defects in combination with the production process, such as equipment errors, material problems or improper process parameter settings. Finally, according to the analysis results of common defects, adjust and optimize the production process to improve the monitoring accuracy of specific areas (such as high-frequency defect areas), adjust process parameters (such as printing thickness, laser etching power, bonding pressure, etc.) to reduce defects, and then optimize the production process and management process to improve the overall product quality.

[0051] In the above, refer to Figure 1 A method for preparing a UV touch screen according to an embodiment of the present invention is described in detail. Figure 2 A UV touch screen manufacturing device according to an embodiment of the present invention is described.

[0052] A UV touch screen manufacturing device according to an embodiment of the present invention is used to solve the technical problems that the process parameters of the core manufacturing process of the existing touch screen manufacturing are difficult to accurately coordinate and control and lack a dynamic monitoring and adjustment mechanism, resulting in low touch screen process precision, unstable product quality and low production efficiency, and achieves the technical effect of improving the touch screen manufacturing process precision, product quality stability and production efficiency. A UV touch screen manufacturing device includes: a production process determination module 10, a control constraint determination module 20, a programmable gate array construction module 30, and a target touch screen manufacturing control module 40.

[0053] A production process determination module 10 is used to identify the production work order of the target touch screen and determine the production process based on the touch screen characteristics, wherein the touch screen characteristics include structural characteristics and performance characteristics, and the production process is a roll-to-roll multi-layer composite process; a control constraint condition determination module 20 is used to perform element control accuracy constraints on the core process of the production process and determine the control constraints, wherein the core process at least includes a conductive silver path printing process, a laser etching process and a film cutting process; a programmable gate array construction module 30 is used to add a main control console and connect a single-threaded device group in series, program the control constraints and the production process, and construct a programmable gate array, wherein the programmable gate array is built into the main control console; a target touch screen preparation control module 40 is used to assist the programmable gate array in performing the target touch screen preparation control, wherein the control dimensions include main line processing, dynamic monitoring and offset adjustment.

[0054] The specific configuration of the production process determination module 10 will be described in detail below. The production process determination module 10 may further include: identifying the touch screen characteristics and determining the modification characteristics; interactively initializing the process, optimizing the modification characteristics based on process correlation, and determining the optimized process; and segmenting the optimized process to obtain the production process.

[0055] The specific configuration of the control constraint determination module 20 will be described in detail below. The control constraint determination module 20 further includes: setting a relationship table between control stability and control accuracy, wherein the control accuracy is the adjustment scale under the current process accuracy; traversing the control elements, combining historical control records, mining the control fluctuation trend, and determining the stability coefficient of the control element; identifying the stability coefficient, traversing the relationship table for matching, and determining the matching control accuracy; superimposing the matching control accuracy and the element process accuracy, and integrating them as the control constraint.

[0056] The specific configuration of the programmable gate array building module 30 will be described in detail below. The programmable gate array building module 30 may further include: configuring programmable blocks, wherein the programmable blocks correspond to the production process one by one; based on the production process and the control constraint conditions, converting and determining the logic program and initializing the programmable blocks, combining the programmable blocks based on the serial order relationship, and determining the first programmable control array.

[0057] The specific configuration of the programmable gate array building module 30 will be described in detail below. The programmable gate array building module 30 may further include: setting a dynamic monitoring target, wherein the dynamic monitoring target is determined based on the transmission-tension-alignment trinity; determining a boundary condition based on a target deviation threshold based on the dynamic monitoring target; and constructing a second programmable monitoring block for the dynamic monitoring target and the boundary condition.

[0058] The specific configuration of the programmable gate array construction module 30 will be described in detail below. The programmable gate array construction module 30 may further include: determining the misalignment vector based on the alignment monitoring deviation; determining the linear relationship between the misalignment vector and the control parameter, and determining the reset function, wherein the linear relationship includes a parameter control relationship and a time limit relationship, and the time limit relationship constrains the defective jump amount; constructing a third programmable control block based on the reset function; integrating the first programmable control array, the second programmable monitoring block and the third programmable control block to generate the programmable gate array.

[0059] The specific configuration of the target touch screen preparation control module 40 will be described in detail below. The target touch screen preparation control module 40 further includes: simulating the touch screen electric field, performing the touch screen current flow test and the touch screen response calculation, and determining the touch screen response data, wherein, through the target touch screen, the surface coupling capacitance is generated on the touch screen to promote the current flow; performing surface image acquisition and recognition detection to determine the defect detection data; generating a quality inspection form based on the touch screen response data and the defect detection data; setting a preset frequency, mining common defects based on the quality inspection form, and reversely guiding the preparation management of the target touch screen.

[0060] A UV touch screen manufacturing device provided in an embodiment of the present invention can execute a UV touch screen manufacturing method provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.

[0061] Although the present application makes various references to certain modules in the device according to the embodiments of the present application, any number of different modules may be used and run on the user terminal and / or server, and the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0062] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A method for preparing a UV touch screen, characterized in that: The method comprises: Identify the production work order of the target touch screen, and determine the production process based on the characteristics of the touch screen, wherein the characteristics of the touch screen include structural characteristics and performance characteristics, and the production process is a roll-to-roll multi-layer composite process; For the production process, the element control precision constraints are performed on the core process to determine the control constraint conditions, wherein the core process at least includes a conductive silver circuit printing process, a laser etching process and a film cutting process; Add a main console and connect the single-threaded device group in series, program the control constraints and the production process, and construct a programmable gate array, wherein the programmable gate array is built into the main console; Assist the programmable gate array to perform preparation control of the target touch screen, wherein the control dimensions include main line processing, dynamic monitoring and misalignment adjustment.

2. A method for preparing a UV touch screen according to claim 1, characterized in that: Determine the production process based on the characteristics of the touch screen, including: Identifying the touch screen characteristics and determining the modification features; Interactively initializing the process, optimizing the process of the modified features based on process correlation, and determining the optimized process; The optimized process is segmented to obtain the production process.

3. A method for preparing a UV touch screen according to claim 1, characterized in that: The step of constraining the element control accuracy for the core process and determining the control constraint conditions includes: Setting a relationship table between control stability and control accuracy, wherein the control accuracy is the adjustment scale under the current process accuracy; Traverse the control factors, combine historical control records, explore the control fluctuation trend, and determine the stability coefficient of the control factors; Identify the stability coefficient, traverse the relationship table for matching, and determine the matching control accuracy; The matching control accuracy and the element process accuracy are superimposed and integrated as the control constraint condition.

4. A method for preparing a UV touch screen according to claim 1, characterized in that: The construction of a programmable gate array comprises: configuring programmable blocks, wherein the programmable blocks correspond one to one to the production processes; Based on the production process and the control constraint conditions, a logic program is converted and determined and the programmable blocks are initialized. Based on the serial order relationship, the programmable blocks are combined to determine a first programmable control array.

5. A method for preparing a UV touch screen according to claim 4, characterized in that: The construction of a programmable gate array comprises: Setting a dynamic monitoring target, wherein the dynamic monitoring target is determined based on the trinity of transmission-tension-alignment; Based on the dynamic monitoring target, determining a boundary condition based on a target deviation threshold; A second programmable monitoring block is constructed according to the dynamic monitoring target and the boundary condition.

6. A method for preparing a UV touch screen according to claim 5, characterized in that: The construction of a programmable gate array comprises: Determine the misalignment vector based on the alignment monitoring deviation; Determine a linear relationship between the misalignment vector and the control parameter, and determine a reset function, wherein the linear relationship includes a parameter control relationship and a time limit relationship, and the time limit relationship constrains the defective product jump amount; Based on the reset function, construct a third programmable control block; The first programmable control array, the second programmable monitoring block and the third programmable control block are integrated to generate the programmable gate array.

7. A method for preparing a UV touch screen according to claim 1, characterized in that: After the target touch screen preparation control is performed, it includes: Simulate the touch screen electric field, perform touch screen current flow test and touch screen response calculation, and determine touch screen response data, wherein the surface coupling capacitance is generated on the touch screen through the target touch screen to promote current flow; Carry out surface image acquisition and recognition detection to determine defect detection data; Generate a quality inspection sheet based on the touch screen response data and the defect detection data; A preset frequency is set to discover common defects based on the quality inspection sheet, and reversely guide the preparation management of the target touch screen.

8. A UV touch screen preparation device, characterized in that: The device is used to implement a UV touch screen preparation method according to any one of claims 1 to 7, and the device comprises: A production process determination module, used to identify the production work order of the target touch screen, and determine the production process based on the characteristics of the touch screen, wherein the characteristics of the touch screen include structural characteristics and performance characteristics, and the production process is a roll-to-roll multi-layer composite process; A control constraint condition determination module is used to perform element control precision constraints on the core process of the production process and determine the control constraint conditions, wherein the core process at least includes a conductive silver path printing process, a laser etching process and a film cutting process; A programmable gate array construction module is used to add a main console and connect the single-threaded device group in series, program the control constraints and the production process, and construct a programmable gate array, wherein the programmable gate array is built into the main console; The target touch screen preparation control module is used to assist the programmable gate array to perform the target touch screen preparation control, wherein the control dimensions include main line processing, dynamic monitoring and misalignment adjustment.

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