A patterned metal mesh printing filling process, device and support backboard

Abstract

The application relates to a patterned metal mesh printing filling process, equipment and a supporting backboard, which comprises the following steps: pre-adjusting and trimming a nozzle module until the number of abnormal nozzles of the nozzle module is lower than a preset defective nozzle proportion; detecting the position of each structural hole of a metal mesh, and grouping the structural holes of the metal mesh according to the position of each structural hole of the metal mesh; detecting the depth of each structural hole of the metal mesh, and determining the depth of the required functional liquid in each structural hole according to the depth of each structural hole of the metal mesh and according to a preset depth proportion; printing and filling the functional liquid into the structural holes by using the nozzle module according to the information of the depth of the required functional liquid in each structural hole; and solidifying the functional liquid printed into the structural holes. The application is suitable for filling processing of structural holes of various forms of metal plates, widens the application range, saves the processing cost and improves the processing efficiency.

Description

Technical Field

[0001] This application relates to the field of inkjet printing technology, and in particular to a patterned metal mesh printing filling process, equipment, and supporting backplate. Background Technology

[0002] With the continuous development of display technology, display devices have been widely used in people's daily lives and work. Among them, flexible display products have advantages such as being foldable and thin, and are becoming increasingly popular.

[0003] Flexible display products consist of a flexible display panel and a support plate that supports the display panel. To ensure sufficient support for foldable display modules, a support plate is usually added to the back of the display panel. In order to reduce the bending stress of the display module and improve its bending capacity, holes are drilled at the bending points of the support plate, i.e., a patterned metal mesh plate is used to support the display panel.

[0004] Since the display panel and the metal mesh are bonded together with adhesive, when the display panel is folded, the adhesive between the holes in the metal mesh and the display panel will deform through the holes, resulting in film marks. This reduces the amount of adhesive between the metal mesh and the display panel, affecting the quality of the display panel and the display effect.

[0005] In related technologies, a mold with multiple channels is used, each corresponding to a through-hole in a metal mesh. By filling the mold with a filling liquid, the liquid flows from each channel into each through-hole of the metal mesh, thus injecting the filling liquid into the through-holes. Therefore, the filling liquid supports the adhesive between the metal mesh and the display panel and restricts the adhesive from entering the through-holes, ensuring a constant adhesive thickness and improving the bending performance of the display panel.

[0006] However, the through-holes in the metal mesh have small diameters, with the smallest size reaching the micrometer level; furthermore, there are a large number of through-holes in the metal mesh. If the filling liquid is injected into the through-holes of the metal mesh by creating channels in a mold, a large number of channels need to be machined in the mold, and these channels need to correspond one-to-one with the through-holes in the metal mesh. The size of the channels in the mold is also small. Therefore, the machining accuracy requirements of the mold are high, the machining cost is high, and each mold is only suitable for one type of metal mesh, resulting in poor versatility. Summary of the Invention

[0007] This application provides a patterned metal mesh printing filling process, equipment, and support backplate to solve the technical problems of high processing cost and poor processing versatility in related technologies that use molds to inject filling liquid into the through holes of metal mesh.

[0008] In a first aspect, a patterned metal mesh printing and filling process is provided, which includes the following steps:

[0009] Pre-adjust and adjust the nozzle module until the number of abnormal nozzle holes in the nozzle module is lower than the preset proportion of defective nozzle holes;

[0010] The position of each structural hole in the metal mesh is detected, and the structural holes of the metal mesh are grouped according to their positions.

[0011] The depth of each structural hole in the metal mesh is detected, and based on the depth of each structural hole in the metal mesh, the depth of the functional liquid to be filled in each structural hole is determined according to a preset depth ratio.

[0012] Based on the information of the required filling depth of functional liquid in each structural hole, the nozzle module is used to print and fill multiple sets of structural holes with functional liquid.

[0013] The functional liquid printed into the structural holes is cured.

[0014] In some embodiments, detecting the position of each structural hole in the metal mesh and grouping the structural holes of the metal mesh according to their positions includes:

[0015] Detect the length direction of each structural hole on the metal mesh;

[0016] Using the printing direction as a reference, calculate the angle between the length direction of each structural hole and the printing direction;

[0017] Multiple angle ranges are preset, and the angle range of the intersection between the length direction and the printing direction of each structural hole is determined to group the multiple structural holes.

[0018] In some embodiments, the preset multiple angle intervals include one angle interval arranged every 0.01-0.5 degrees.

[0019] In some embodiments, the preset depth ratio includes 30%-100%.

[0020] In some embodiments, after detecting the depth of each structural pore of the metal mesh and determining the required filling depth of the functional liquid in each structural pore according to a preset depth ratio, the method further includes determining the required volume of the functional liquid in each structural pore. Determining the required volume of the functional liquid in each structural pore includes:

[0021] Obtain the volume of each structural hole;

[0022] The required functional fluid volume within each structural pore is calculated based on the depth ratio and the volume of each structural pore.

[0023] In some embodiments, the step of using the printhead module to print and fill multiple sets of structural holes with functional liquid includes:

[0024] Obtain the position of each group of structural holes and assign the corresponding nozzle module nozzle to each structural hole;

[0025] Each structural hole is printed with a filling fluid.

[0026] In some embodiments, the printing-filling functional fluid for each structural hole includes:

[0027] Obtain the width dimension of each structural hole;

[0028] Obtain the droplet diameter;

[0029] Based on the droplet diameter and the width of the structural hole, plan at least one printing path, and set multiple printing paths side by side with intervals. In addition, a safe distance is left between the printing path at the edge of the multiple printing paths and the hole wall of the structural hole in the side-by-side direction of the multiple printing paths.

[0030] Fill the structural holes with functional fluid according to the multi-line printing path.

[0031] In some embodiments, the safety distance includes a distance greater than the radius of the printed droplet.

[0032] In some embodiments, the functional liquid printed into the structural pores during the curing process includes:

[0033] Based on the required depth of functional fluid filling in each structural pore, determine the curing energy and curing environment at each structural pore.

[0034] In some embodiments, after the functional liquid is cured and printed into the structural holes, a finished product inspection is also included, which includes printing depth inspection and overflow inspection.

[0035] The beneficial effects of the technical solution provided in this application include:

[0036] This application provides a patterned metal mesh printing and filling process. By printing, a functional liquid is applied to the structural holes of the metal mesh, facilitating precise filling of each hole with the functional liquid. The volume of functional liquid filling each hole is more accurate, and the location of the holes is easily determined before printing the functional liquid to the designated holes. This process is applicable to filling structural holes in various types of metal sheets, broadening its scope of application. Furthermore, it eliminates the need for molds to inject the functional liquid into the structural holes, saving costs.

[0037] After adjusting and correcting the printhead module, the system ensures the normal operation of subsequent printhead modules, guarantees printing accuracy, and ensures that the functional fluid is filled into the designated structural holes. By detecting the position of the structural holes, the system obtains their location information, facilitating the printing of the functional fluid into the designated structural holes. Furthermore, it allows for grouping the structural holes for subsequent printing, ensuring that structural holes with consistent length orientation are processed together, reducing the possibility of functional fluid overflow and improving printing filling accuracy. In addition, by controlling the functional fluid filling depth in each structural hole, the system ensures that the functional fluid in each hole meets the requirements, preventing situations where some structural holes have insufficient functional fluid or overflow, thus improving the quality of functional fluid filling into the structural holes of the metal mesh.

[0038] Secondly, a patterned metal mesh printing and filling device is provided, comprising:

[0039] A printhead module, comprising multiple nozzles, is used to print functional liquid into the structural holes of a metal mesh.

[0040] A conveying module for conveying metal mesh;

[0041] A control module controls the nozzle module and the conveying module according to the patterned metal mesh printing and filling process described above.

[0042] Another embodiment of this application provides a patterned metal mesh printing and filling device. Since the patterned metal mesh printing and filling device operates according to the above-described patterned metal mesh printing and filling process, the beneficial effects of the patterned metal mesh printing and filling device are the same as the beneficial effects of the above-described patterned metal mesh printing and filling process, and will not be repeated here.

[0043] Thirdly, a support backplate is provided, comprising the patterned metal mesh printing and filling process described above, and / or the metal mesh processed by the patterned metal mesh printing and filling equipment described above.

[0044] Another embodiment of this application provides a support back plate. Since the support back plate includes the patterned metal mesh printing and filling process described above, and / or the metal mesh processed by the patterned metal mesh printing and filling equipment described above, the beneficial effects of the support back plate are consistent with the beneficial effects of the patterned metal mesh printing and filling process or the patterned metal mesh printing and filling equipment described above, and will not be repeated here. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 A flowchart of the patterned metal mesh printing and filling process provided in the embodiments of this application;

[0047] Figure 2 A schematic diagram of a metal mesh provided in an embodiment of this application;

[0048] Figure 3 A schematic diagram showing the structural hole deviation provided in an embodiment of this application;

[0049] Figure 4 This is a schematic diagram of the printing path when printing structural holes according to an embodiment of this application. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] This application provides a patterned metal mesh printing and filling process, equipment, and supporting backplate. This process prints a functional liquid into the structural holes of the metal mesh, facilitating precise filling of each hole with the functional liquid. The volume of functional liquid filling each hole is more accurate, and the location of the holes is easily determined before printing the functional liquid to the designated holes. This method is applicable to filling the structural holes of various types of metal sheets, broadening its scope of application. Furthermore, it eliminates the need for molds to inject the functional liquid into the structural holes, saving costs. This application addresses the technical problems of high processing costs and poor processing versatility associated with the use of molds to inject filling liquid into the structural holes of metal meshes in related technologies.

[0052] Reference Figure 1 A patterned metal mesh printing and filling process includes steps S100-S600.

[0053] S100. Pre-adjust and adjust the nozzle module until the number of abnormal nozzle holes in the nozzle module is lower than the preset defective nozzle hole ratio.

[0054] S200: Detect the position of each structural hole in the metal mesh, and group the structural holes of the metal mesh according to their positions.

[0055] S300: Detect the depth of each structural hole in the metal mesh, and determine the required depth of functional liquid to be filled in each structural hole according to a preset depth ratio based on the depth of each structural hole in the metal mesh.

[0056] S400: Based on the information of the required filling depth of functional liquid in each structural hole, the nozzle module is used to print and fill functional liquid into multiple sets of structural holes respectively.

[0057] S500 is a functional liquid used for curing and printing into structural holes.

[0058] S600, Finished Product Inspection.

[0059] This configuration provides a patterned metal mesh printing and filling process. By printing, functional liquid is applied to the structural holes of the metal mesh, facilitating precise filling of each hole. The volume of functional liquid filling each hole is more accurate, and the location of the holes is easily determined before printing the functional liquid to the designated holes. This process is suitable for filling structural holes in various types of metal sheets, broadening its applicability. Furthermore, it eliminates the need for molds to inject the functional liquid into the structural holes, saving on mold development and manufacturing costs.

[0060] It should be noted that the order of steps S100, S200 and S300 is not restricted.

[0061] Step S100 involves pre-adjusting and trimming the nozzle module until the number of abnormal nozzle holes in the nozzle module is lower than the preset proportion of defective nozzle holes. Specifically, this includes steps S110-S140.

[0062] S110, activate the nozzle module.

[0063] S120, Ink droplet observation to detect the number of abnormal nozzles in the printhead module.

[0064] S130. After cleaning the nozzle module, restart the nozzle module and check the number of abnormal nozzles in the cleaned nozzle module.

[0065] S140. If the number of abnormal nozzles is less than or equal to the preset defective nozzle ratio, the nozzle module is repaired. Otherwise, the nozzle module is cleaned and inspected repeatedly until the number of abnormal nozzles in the nozzle module is not greater than the preset defective nozzle ratio.

[0066] This setup ensures that the number of abnormal nozzles in the printhead module is small enough to avoid affecting printing, thus guaranteeing the accuracy of subsequent printing, by adjusting and correcting the printhead module.

[0067] In step S110, the nozzle module is activated.

[0068] Specifically, the nozzle module can be piezoelectric or electro-hydraulic.

[0069] In step S120, ink droplet observation is performed to detect the number of abnormal nozzles in the printhead module.

[0070] Specifically, by using ink droplet observation, i.e. imaging, the ejection status of each nozzle of the printhead module in operation can be detected, thereby identifying abnormal nozzles in the printhead module and recording the total number of abnormal nozzles.

[0071] In step S130, after cleaning the nozzle module, the nozzle module is put into operation again, and the number of abnormal nozzles in the cleaned nozzle module is detected.

[0072] Specifically, the nozzle surface of the printhead module is cleaned by rinsing and wiping. The cleaned printhead module is then put into operation again, and the nozzles are inspected using ink droplet observation to determine the number of abnormal nozzles after cleaning.

[0073] In step S140, if the number of abnormal nozzles is less than or equal to the preset defective nozzle ratio, the nozzle module is repaired; otherwise, the nozzle module is cleaned and inspected repeatedly until the number of abnormal nozzles in the nozzle module is not greater than the preset defective nozzle ratio.

[0074] Specifically, the abnormal nozzles of the cleaned printhead module are counted, and the actual proportion of the abnormal nozzles to the total number of nozzles in the printhead module is calculated. If the actual proportion is greater than the preset proportion of defective nozzles, the printhead module is cleaned again. If the actual proportion is less than or equal to the preset proportion of defective nozzles, the repair of the printhead module is completed, and the printhead module can then be used for printing.

[0075] In addition, if the number of abnormal nozzles still does not meet the requirements after multiple cleanings of the nozzle module, the nozzle module should be replaced. Specifically, the nozzle module can be replaced after 4-6 cleaning cycles.

[0076] The preset defective nozzle ratio is 1%.

[0077] This setting ensures that the proportion of defective nozzles is 1%, thus minimizing the number of defective nozzles and maintaining the normal operation of the nozzle module.

[0078] In this embodiment, the shape of the metal mesh is referenced. Figure 2As shown, it includes multiple elongated structural holes, with the length direction of these holes aligned with the printing direction, which is the direction in which the printhead module moves relative to the metal mesh during scanning. However, it should be noted that due to processing errors in the metal mesh, the length direction of the structural holes on the mesh may have a slight angle with the printing direction (see reference). Figure 3 ).

[0079] In other embodiments, the structural holes on the metal mesh may also be in the shape of rhombus, ellipse, or circle, in which case the extension direction of the bending line of the metal mesh is specified as the length direction of the structural hole.

[0080] Step S200 involves detecting the position of each structural hole in the metal mesh and grouping the structural holes of the metal mesh according to their positions. Specifically, this includes steps S210-S230.

[0081] S210. Detect the length direction of each structural hole on the metal mesh.

[0082] S220. Using the printing direction as a reference, calculate the angle between the length direction of each structural hole and the printing direction.

[0083] S230. Preset multiple angle ranges, determine the angle range of the intersection between the length direction and the printing direction of each structural hole, so as to group multiple structural holes.

[0084] This setup, by detecting the position of the structural holes, not only provides information on their location, making it easier to print the functional fluid into the designated structural holes, but also allows for grouping the structural holes for subsequent printing. This ensures that structural holes with consistent length orientation are processed together, reducing the possibility of functional fluid overflow and improving printing filling accuracy.

[0085] For easier understanding, please refer to Figure 3 In this embodiment, the length directions of multiple structural holes on the metal mesh are at an angle to the printing direction. If the angles between the length directions of different structural holes and the printing direction differ significantly—for example, if the printing direction of the first structural hole in the figure is the first direction—and the second structural hole in the figure is printed according to the first direction, the functional liquid is likely to fall outside the second structural hole, causing functional liquid overflow. In this embodiment, the printing direction of the second structural hole is planned according to its length direction, which is the second direction shown in the figure. Therefore, when the functional liquid is printed into the second structural hole, it is less likely to overflow.

[0086] By grouping multiple structural holes and planning the same printing path direction for structural holes with length deviations within a certain range, printing accuracy is satisfied and functional fluid is not prone to overflowing from the structural holes. This eliminates the need for printing path direction planning for each structural hole, saving computing power and improving printing efficiency.

[0087] In step S210, the length direction of each structural hole on the metal mesh is detected.

[0088] Specifically, the location of each structural hole on the metal mesh is determined through visual imaging, as well as the length direction of each structural hole.

[0089] In step S220, the angle between the length direction of each structural hole and the printing direction is calculated based on the printing direction.

[0090] Specifically, the printing direction is the direction of relative movement between the printhead module and the metal mesh. Generally, before printing, the length direction of the metal mesh is adjusted to be consistent with the printing direction, while the length or width direction of the structural holes on the metal mesh is basically consistent with the length direction of the metal mesh, so as to reduce the angle between the printing direction and the length direction of the structural holes.

[0091] After imaging the structural hole, the angle between the length direction of the structural hole and the printing direction can be determined by comparing the length direction of the structural hole with the printing direction.

[0092] In step S230, multiple angle intervals are preset, and the angle interval between the length direction of each structural hole and the printing direction is determined to group the multiple structural holes.

[0093] Specifically, an angle interval is arranged every 0.01-0.5 degrees, starting from 0 degrees at the angle between the length direction of the structural hole and the printing direction, and an angle interval is set for every increase or decrease of 0.01-0.5 degrees. Preferably, in this embodiment, an angle interval is arranged every 0.05 degrees. It should be noted that when the angle between the length direction of the structural hole and the printing direction is positive, it indicates that the structural hole is deflected clockwise relative to the printing direction; when the angle between the length direction of the structural hole and the printing direction is negative, it indicates that the structural hole is deflected counterclockwise relative to the printing direction.

[0094] This setup, by defining multiple angle ranges, allows all structural holes to be grouped according to their length direction, thereby improving the subsequent processing quality of the printing and filling fluid within the structural holes.

[0095] In step S300, the depth of each structural hole in the metal mesh is detected, and the depth of the functional liquid to be filled in each structural hole is determined according to a preset depth ratio based on the depth of each structural hole in the metal mesh.

[0096] This setup, by detecting the depth of each structural hole, ensures that each structural hole is filled with a specified depth of functional liquid. The consistent depth of functional liquid in each structural hole results in better filling consistency, guaranteeing that the functional liquid in each structural hole meets the requirements. It also prevents situations where some structural holes have insufficient functional liquid or overflow, thus improving the quality of functional liquid filling into the structural holes of the metal mesh and resulting in better filling quality.

[0097] Specifically, the preset depth ratio is 30%-100%. Due to the varying thickness of the metal mesh at different locations and the different depths of each structural hole, multiple structural holes have different depths. By measuring the depth of each structural hole using an interferometer and combining this measurement with the depth ratio, the required filling depth parameters of the functional fluid in each structural hole can be determined, thereby improving the consistency of the functional fluid filling.

[0098] Furthermore, after determining the functional fluid filling depth of each structural pore, the required functional fluid volume within each structural pore is then determined. This specifically includes:

[0099] Obtain the volume of each structural hole.

[0100] The required functional fluid volume within each structural pore is calculated based on the depth ratio and the volume of each structural pore.

[0101] Specifically, when imaging determines the location of the structural holes, the shape of the structural holes is simultaneously acquired, and the bottom area of ​​each structural hole is calculated. Combined with the depth information of the structural holes, the total volume of all structural holes is determined. By multiplying the depth ratio by the volume of the structural holes, the volume of functional fluid required to fill each structural hole is calculated.

[0102] This setting converts the depth information of the functional fluid filling into the required volume information of the functional fluid, making it easier to control the amount of functional fluid printed into each structural hole and ensuring the accuracy of the functional fluid filling amount.

[0103] In step S400, based on the information of the required filling depth of functional liquid in each structural hole, the nozzle module is used to print and fill functional liquid into multiple sets of structural holes respectively.

[0104] This design, utilizing printing to fill the functional fluid into each structural hole, facilitates precise filling of the fluid into each hole, ensuring more accurate volume of fluid per hole. It also allows for accurate hole location determination and direct printing of the functional fluid to the designated holes, making it suitable for filling structural holes in various types of metal sheets and broadening its applicability. Furthermore, the elimination of the need for molds to inject the functional fluid into the structural holes saves costs.

[0105] Specifically, the depth information of each structural hole can be converted into information on the required volume of functional liquid in each structural hole and transmitted to the nozzle module to control the nozzle module to print the functional liquid quantitatively into each structural hole.

[0106] The process of using the nozzle module to print and fill multiple sets of structural holes with functional liquid includes steps S410-S420.

[0107] S410. Obtain the position of each group of structural holes and assign the corresponding nozzle module nozzle to each structural hole.

[0108] S420, Print and fill functional fluid for each structural hole.

[0109] This configuration, by assigning nozzles to the structural holes, ensures that each structural hole is printed with functional fluid as the printhead module moves relative to the metal mesh. With the relative movement of the printhead module and the metal mesh, different nozzles print and fill the corresponding structural holes with functional fluid, thus improving printing efficiency.

[0110] In step S410, the position of each group of structural holes is obtained, and the nozzle of the nozzle module used is assigned to each structural hole.

[0111] Specifically, the position of each structural hole on the metal mesh is determined by imaging the metal mesh, so as to obtain the position of each group of structural holes.

[0112] As the printhead module scans relative to the metal mesh, when the structure hole is located below its corresponding nozzle, the nozzle works to print and fill the structure hole with functional liquid.

[0113] This configuration allows each structural hole to correspond to multiple nozzles, enabling printing along the length of the structural hole. This means printing is performed according to the corresponding printing path direction, improving printing accuracy. Even if different groups of structural holes have different printing path directions, by allocating nozzles and controlling their operation, the printhead module can fill multiple groups of structural holes with a single scan, each following a different printing path direction, thus improving printing efficiency.

[0114] Step S420, which involves printing and filling functional liquid into each structural hole, specifically includes steps S421-S424.

[0115] S421. Obtain the width dimension of each structural hole.

[0116] S422, Obtain the droplet diameter.

[0117] S423. Based on the droplet diameter and the width of the structural hole, plan at least one printing path, and set multiple printing paths side by side with intervals. The printing path at the edge of the multiple printing paths shall have a safe distance between it and the hole wall of the structural hole in the side-by-side direction of the multiple printing paths.

[0118] S424. Fill the structural holes with functional liquid according to the multi-line printing path.

[0119] This setup, by planning multiple printing paths for each structural hole, improves the uniformity of functional fluid filling, reduces the generation of air bubbles during the filling process, and enhances the filling quality.

[0120] In step S421, the width dimension of each structural hole is obtained.

[0121] Specifically, the width of each structural hole is determined through imaging.

[0122] Among them, step S422 is to obtain the droplet diameter.

[0123] Specifically, the droplet diameter is determined based on the printing parameters. It's important to note that the droplet diameter is the diameter of the droplet itself, and it must be smaller than the width of the structural aperture.

[0124] In step S423, based on the droplet diameter and the width of the structural hole, at least one printing path is planned, and multiple printing paths are set side by side with intervals. A safe distance is left between the printing path at the edge of the multiple printing paths and the hole wall of the structural hole in the side-by-side direction of the multiple printing paths.

[0125] Reference Figure 4 Specifically, the length direction of the multi-line printing path is set along the printing path direction corresponding to the structural hole, and the multi-line printing paths are arranged side by side along the direction perpendicular to the printing path. Multi-line printing is performed on each structural hole, which improves printing uniformity, and the functional liquid is filled into the structural hole simultaneously with multiple printing paths, thus improving printing efficiency.

[0126] Furthermore, a safe distance is maintained between the printing path at the edge and the wall of the structural hole in the parallel direction of the multiple printing paths. This safe distance is greater than the radius of the printed droplets. Therefore, when droplets are printed onto the structural hole, they are less likely to fall onto the surface of the metal mesh, reducing the possibility of functional liquid overflow and improving print quality.

[0127] Among them, step S424 involves filling the structural holes with functional liquid according to the multi-line printing path.

[0128] Specifically, a printhead module is used, and functional liquid is printed onto the structural holes according to multiple printing paths, thereby improving printing efficiency. In this embodiment, the functional liquid includes optical adhesive.

[0129] Among them, in step S500, the functional liquid printed into the structural holes is cured.

[0130] Specifically, according to the depth of the functional liquid required to be filled in each structural hole, the curing energy and the curing ambient atmosphere at each structural hole are determined.

[0131] In this embodiment, a UV lamp is used to cure the functional liquid.

[0132] In this embodiment, when the printing depth of the functional liquid is 20 - 40 microns, the curing energy is 1000 - 2000 mj / cm 2 , and the curing ambient atmosphere is nitrogen; or the curing energy is 3000 - 4000 mj / cm2, and the curing ambient atmosphere is air.

[0133] When the printing depth of the functional liquid is 40 - 80 microns, the curing energy is 2000 - 3000 mj / cm 2 , and the curing ambient atmosphere is air; or the curing energy is 3000 - 4000 mj / cm2, and the curing ambient atmosphere is nitrogen.

[0134] When the printing depth of the functional liquid is above 80 microns, the curing energy is 4000 - 5000 mj / cm 2 , and the curing ambient atmosphere is air.

[0135] With such settings, after the functional liquid is cured, the functional liquid is fixed in the structural holes to form part of the metal mesh.

[0136] Among them, in step S600, finished product inspection is performed.

[0137] Specifically, it includes printing depth detection and overflow detection.

[0138] Among them, the printing depth detection includes using an interferometer to detect the depth of the functional liquid to determine whether the depth of the functional liquid in each structural hole is printed qualified, ensuring the quality of the metal mesh off the line. In this embodiment, the result of the printing depth detection within ±3% indicates that the printing depth detection is qualified.

[0139] Among them, the overflow detection includes detecting the overflow area in the form of imaging and detecting the height of the functional liquid protruding from the surface of the metal mesh through an interferometer. When the proportion of the overflow area in the total area of the metal mesh is less than 1% and the height of the functional liquid protruding from the surface of the metal mesh is less than 1 micron, it indicates that the overflow detection is qualified.

[0140] In this embodiment, when both the printing depth detection and the overflow detection are qualified, the printing and filling process of the structural holes of the metal mesh is qualified.

[0141] With such settings, through the finished product inspection, the quality of the processed metal mesh is ensured, and defective products are prevented from going off the line.

[0142] This application provides a patterned metal mesh printing and filling process. By printing, a functional liquid is applied to the structural holes of the metal mesh, facilitating precise filling of each hole with the functional liquid. The volume of functional liquid filling each hole is more accurate, and the location of the holes is easily determined before printing the functional liquid to the designated holes. This process is applicable to filling structural holes in various types of metal sheets, broadening its scope of application. Furthermore, it eliminates the need for molds to inject the functional liquid into the structural holes, saving costs.

[0143] After adjusting and correcting the printhead module, the system ensures the normal operation of subsequent printhead modules, guarantees printing accuracy, and ensures that the functional fluid is filled into the designated structural holes. By detecting the position of the structural holes, the system obtains their location information, facilitating the printing of the functional fluid into the designated structural holes. Furthermore, it allows for grouping the structural holes for subsequent printing, ensuring that structural holes with consistent length orientation are processed together, reducing the possibility of functional fluid overflow and improving printing filling accuracy. In addition, by controlling the functional fluid filling depth in each structural hole, the system ensures that the functional fluid in each hole meets the requirements, preventing situations where some structural holes have insufficient functional fluid or overflow, thus improving the quality of functional fluid filling into the structural holes of the metal mesh.

[0144] Another embodiment of this application provides a patterned metal mesh printing and filling device, comprising:

[0145] A printhead module, comprising multiple nozzles, is used to print functional liquid into the structural holes of a metal mesh.

[0146] A conveying module for conveying metal mesh;

[0147] A control module controls the nozzle module and the conveying module according to the patterned metal mesh printing and filling process described above.

[0148] Another embodiment of this application provides a patterned metal mesh printing and filling device. Since the patterned metal mesh printing and filling device operates according to the above-described patterned metal mesh printing and filling process, the beneficial effects of the patterned metal mesh printing and filling device are the same as the beneficial effects of the above-described patterned metal mesh printing and filling process, and will not be repeated here.

[0149] Another embodiment of this application provides a support backplate, including the patterned metal mesh printing and filling process described above, and / or the metal mesh processed by the patterned metal mesh printing and filling equipment described above.

[0150] Another embodiment of this application provides a support backplate. Since the support backplate includes the patterned metal mesh printing and filling process described above, and / or the metal mesh processed by the patterned metal mesh printing and filling equipment described above, the beneficial effects of this support backpack are consistent with the beneficial effects of the patterned metal mesh printing and filling process or the patterned metal mesh printing and filling equipment described above, and will not be repeated here.

[0151] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0152] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0153] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A patterned metal mesh printing and filling process, characterized in that, It includes the following steps: Pre-adjust and adjust the nozzle module until the number of abnormal nozzle holes in the nozzle module is lower than the preset proportion of defective nozzle holes; The position of each structural hole in the metal mesh is detected, and the structural holes of the metal mesh are grouped according to their positions. The process of detecting the position of each structural hole in the metal mesh and grouping the structural holes in the metal mesh based on their positions includes: detecting the length direction of each structural hole in the metal mesh; calculating the angle between the length direction of each structural hole and the printing direction, using the printing direction as a reference; and presetting multiple angle ranges to determine the angle range into which the angle between the length direction of each structural hole and the printing direction falls, so as to group the multiple structural holes. The depth of each structural hole in the metal mesh is detected, and based on the depth of each structural hole in the metal mesh, the depth of the functional liquid to be filled in each structural hole is determined according to a preset depth ratio. Based on the information of the required filling depth of functional liquid in each structural hole, the nozzle module is used to print and fill multiple sets of structural holes with functional liquid. The functional liquid printed into the structural holes is cured.

2. The patterned metal mesh printing and filling process according to claim 1, characterized in that, The preset multiple angle intervals include one angle interval arranged every 0.01-0.5 degrees.

3. The patterned metal mesh printing and filling process according to claim 1, characterized in that, The preset depth ratio includes 30%-100%.

4. The patterned metal mesh printing and filling process according to claim 1, characterized in that, After detecting the depth of each structural pore of the metal mesh and determining the required filling depth of the functional liquid in each structural pore according to a preset depth ratio, the method further includes determining the required volume of the functional liquid in each structural pore. Determining the required volume of the functional liquid in each structural pore includes: Obtain the volume of each structural hole; The required functional fluid volume within each structural pore is calculated based on the depth ratio and the volume of each structural pore.

5. The patterned metal mesh printing and filling process according to claim 1, characterized in that, The method of using a printhead module to print and fill multiple sets of structural holes with functional liquid includes: Obtain the position of each group of structural holes and assign the corresponding nozzle module nozzle to each structural hole; Each structural hole is printed with a filling fluid.

6. The patterned metal mesh printing and filling process according to claim 5, characterized in that, The printing filling fluid for each structural hole includes: Obtain the width dimension of each structural hole; Obtain the droplet diameter; Based on the droplet diameter and the width of the structural hole, plan at least one printing path, and set multiple printing paths side by side with intervals. In addition, a safe distance is left between the printing path at the edge of the multiple printing paths and the hole wall of the structural hole in the side-by-side direction of the multiple printing paths. Fill the structural holes with functional fluid according to the multi-line printing path.

7. The patterned metal mesh printing and filling process according to claim 6, characterized in that, The safety distance includes a distance greater than the radius of the printed droplet.

8. The patterned metal mesh printing and filling process according to claim 1, characterized in that, The functional liquid used for curing and printing into the structural holes includes: Based on the required depth of functional fluid filling in each structural pore, determine the curing energy and curing environment at each structural pore.

9. The patterned metal mesh printing and filling process according to claim 1, characterized in that, After the functional liquid is cured and printed into the structural holes, the process also includes finished product inspection, which includes printing depth inspection and overflow inspection.

10. A patterned metal mesh printing and filling device, characterized in that, include: A printhead module, comprising multiple nozzles, is used to print functional liquid into the structural holes of a metal mesh. A conveying module for conveying metal mesh; A control module that controls the nozzle module and the conveying module according to the patterned metal mesh printing and filling process as described in any one of claims 1 to 9.

11. A support backplate, characterized in that, This includes metal meshes processed by the patterned metal mesh printing and filling process as described in claims 1 to 9, and / or metal meshes processed by the patterned metal mesh printing and filling apparatus as described in claim 10.

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