Electrofluidic inkjet printing apparatus, method, computer device and storage medium

Abstract

The application relates to an electrohydrodynamic inkjet printing device, method, computer equipment, computer readable storage medium and computer program product. The electrohydrodynamic inkjet printing device comprises: an electrostatic eliminator for weakening electrostatic of a region to be printed; an electrostatic measurement module for measuring an electrostatic value of the region to be printed; a control module connected with the electrostatic measurement module, for acquiring the electrostatic value, and generating a voltage regulating signal according to the electrostatic value when the electrostatic value meets a preset condition; a conductive nozzle for electrohydrodynamic inkjet printing on the region to be printed under the action of an applied voltage; and an output module connected with the conductive nozzle and the control module respectively, for receiving the voltage regulating signal and adjusting the voltage applied to the conductive nozzle according to the voltage regulating signal. The electrohydrodynamic inkjet printing device is used to process the region to be printed only when the electrostatic value of the region to be printed meets the requirements, thereby effectively improving the printing precision of the region to be printed.

Description

Technical Field

[0001] This invention relates to the field of inkjet printing, and more particularly to electro-hydraulic inkjet printing apparatus, methods, computer equipment, and storage media. Background Technology

[0002] Fluorescent inkjet printing technology has become increasingly mature. Due to its high precision, this technology has been applied to scenarios where high accuracy is required after printing, such as the Micro LED repair process.

[0003] However, since electrohydraulic inkjet printing uses the principle of voltage, it is very sensitive to the processing environment, especially the static electricity of the substrate. Under the same printing voltage, the greater the static electricity of the substrate, the larger the printed size and the less stable the shape.

[0004] Traditional static electricity elimination methods primarily involve ionizing air into a large number of positive and negative ions using an static eliminator, and then using wind to blow these ions onto the surface of the object to neutralize static electricity. However, because the ions blown out by the wind are scattered and distributed, different areas on the substrate surface can easily have different static electricity values. It is difficult to ensure that the static electricity value of the area to be printed meets the requirements, so during processing, the problem of printing dimensions not meeting the accuracy requirements can still easily occur. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a current-current inkjet printing apparatus, method, computer equipment, computer-readable storage medium and computer program product, which aims to solve the problem that the printing size of the existing current-current inkjet printing technology does not meet the accuracy requirements.

[0006] In a first aspect, this application provides an electrohydraulic inkjet printing apparatus, comprising:

[0007] Static eliminator, used to reduce static electricity in the area to be printed;

[0008] The electrostatic measurement module is used to measure the electrostatic value of the area to be printed.

[0009] A control module, connected to the electrostatic measurement module, is used to acquire the electrostatic value and generate a voltage regulation signal based on the electrostatic value when the electrostatic value meets a preset condition.

[0010] A conductive nozzle is used to perform electrohydraulic inkjet printing on the area to be printed under the action of an applied voltage;

[0011] The output module is connected to the conductive nozzle and the control module respectively, and is used to receive the voltage regulation signal and adjust the voltage applied to the conductive nozzle according to the voltage regulation signal.

[0012] The aforementioned electrostatic inkjet printing device reduces static electricity in the area to be printed using an electrostatic eliminator. An electrostatic measurement module measures the static electricity value of the area to be printed and feeds it back to the control module, thereby monitoring the static electricity value. Only when the static electricity value meets preset conditions does the control module generate a voltage regulation signal based on the static electricity value, adjusting the voltage applied to the conductive nozzle by the output module. This causes the conductive nozzle to eject ink for inkjet printing. Thus, the area to be printed is only processed when the static electricity value meets the requirements, effectively avoiding the problem of non-compliant printing dimensions caused by non-compliant static electricity values, thereby improving the printing accuracy of the area to be printed.

[0013] Optionally, the control module is further configured to obtain the maximum change value of the electrostatic value within a preset time period, and when the maximum change value is less than a first preset value and the electrostatic value is less than a second preset value within the preset time period, generate a voltage regulation signal based on the average value of each electrostatic value obtained within the preset time period.

[0014] In this embodiment, the control module obtains the maximum change value of the electrostatic value within a preset time period. When the maximum change value is detected to be less than the first preset value and the electrostatic value is less than the second preset value within the preset time period, it is determined that the electrostatic value meets the preset condition. Based on the electrostatic value at this time, the voltage applied to the conductive nozzle by the output module is controlled, which can control the output amount of the conductive nozzle and ensure that the printing size of the printing area is stable and meets the accuracy requirements.

[0015] Optionally, the control module is also connected to the static eliminator;

[0016] The control module is also used to control the static eliminator to work again when the static value does not meet the preset conditions, so as to reduce the static electricity in the area to be printed again.

[0017] In this embodiment, the control module controls the static eliminator to work again when the static electricity value of the area to be printed does not meet the preset conditions, thereby reducing the static electricity in the area to be printed again and increasing the probability that the static electricity value of the area to be printed meets the printing requirements.

[0018] Optionally, the control module is further configured to acquire the static electricity value measured by the static electricity measurement module after the static electricity eliminator has finished working again, and output a first alarm signal if the static electricity value does not meet the preset conditions.

[0019] In this embodiment, after the static eliminator has finished working again, the control module obtains the static value measured by the static measurement module, and outputs a first alarm signal when the static value still does not meet the preset conditions, so as to promptly prompt relevant personnel to check and determine the cause of the problem.

[0020] Optionally, the area to be printed includes an abnormal electrode of the Micro LED substrate, and the conductive nozzle is used to perform electrofluid inkjet printing on the abnormal electrode of the Micro LED substrate under the action of an applied voltage, so as to repair the abnormal electrode into a normal electrode.

[0021] Optionally, the electrohydraulic inkjet printing apparatus further includes:

[0022] An image monitoring module, connected to the control module, is used to acquire a print image of the area to be printed.

[0023] The control module is also used to acquire the printed image, acquire the printed size based on the printed image, and output a second alarm signal when the printed size is greater than a third preset value.

[0024] In this embodiment, the image monitoring module acquires the printing image of the area to be printed, enabling the control module to analyze the printing image and obtain the printing size. The control module compares the printing size with a third preset value. When the printing size is greater than the third preset value, it determines that the printing size does not meet the printing accuracy requirements and outputs a second alarm signal, thereby indicating that there is a problem with the printing size of the area to be printed and promptly prompting relevant personnel to check and determine the cause of the problem.

[0025] Secondly, this application also provides an electrohydraulic inkjet printing method, comprising:

[0026] Obtain the electrostatic value of the area to be printed, wherein the area to be printed includes an abnormal electrode of the Micro LED substrate;

[0027] When the electrostatic value meets the preset conditions, the voltage applied to the conductive nozzle is adjusted according to the electrostatic value to control the conductive nozzle to perform electrofluid inkjet printing on the abnormal electrode and repair the abnormal electrode to a normal electrode.

[0028] Optionally, when the electrostatic value meets a preset condition, adjusting the voltage applied to the conductive nozzle according to the electrostatic value includes:

[0029] When the maximum change in the electrostatic value within a preset time period is less than a first preset value, and the electrostatic value is less than a second preset value within the preset time period, the voltage applied to the conductive nozzle is adjusted according to the average value of each electrostatic value obtained within the preset time period.

[0030] Optionally, the electrohydraulic inkjet printing method further includes:

[0031] When the static electricity value does not meet the preset conditions, the static eliminator is controlled to work again to further reduce the static electricity in the area to be printed.

[0032] Optionally, the electrohydraulic inkjet printing method further includes:

[0033] After the static eliminator finishes working again, the static electricity value of the area to be printed is obtained;

[0034] If the electrostatic value does not meet the preset conditions, a first alarm signal will be output.

[0035] Optionally, the electrohydraulic inkjet printing method further includes:

[0036] Obtain the printable image of the area to be printed;

[0037] The printing size is obtained based on the printed image, and a second alarm signal is output when the printing size is greater than a third preset value.

[0038] Optionally, the electrohydraulic inkjet printing method further includes:

[0039] Obtain the static elimination range of the static eliminator and the first position information of each of the areas to be printed;

[0040] The first moving path of the static eliminator is planned according to the static elimination range and the first location information;

[0041] The second movement path of the conductive nozzle is planned based on the first movement path and the first position information.

[0042] Optionally, planning the first movement path of the static eliminator based on the static elimination range and each of the first location information includes:

[0043] Obtain the candidate working positions of the static eliminator for each of the areas to be printed;

[0044] Determine the number of areas to be printed that are within the static elimination range of the static eliminator when the static eliminator is in each of the candidate working positions;

[0045] Determine the first movement order of each candidate working position based on the position information of each candidate working position;

[0046] The priority of each candidate working position is determined based on the quantity corresponding to each candidate working position and the first moving order;

[0047] The candidate working position with the highest priority among all the candidate working positions is determined as the target working position, and a filtering operation is performed. The filtering operation includes: recording the target working position, obtaining the area to be printed within the static elimination range of the static eliminator when the static eliminator is in the target working position, excluding the candidate working positions corresponding to the area to be printed within the static elimination range, taking the highest priority candidate working position among the remaining candidate working positions as the new target working position, and returning to perform the filtering operation until all candidate working positions are excluded.

[0048] The first movement path is determined based on the location information of each target working position.

[0049] Optionally, the number of electrostatic eliminators is multiple; the electrostatic inkjet printing method further includes:

[0050] The second movement sequence and the second position information of each working position of the static eliminator are determined according to the first movement path.

[0051] The working position corresponding to the candidate static eliminator is determined according to the second moving order and each of the second position information, wherein the candidate static eliminator is the remaining static eliminator located outside the current printing area;

[0052] Control the candidate static eliminator to move to the corresponding working position.

[0053] Thirdly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the electrohydraulic inkjet printing method as described above.

[0054] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the electrohydraulic inkjet printing method as described above.

[0055] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the electro-hydraulic inkjet printing method as described above.

[0056] The aforementioned electrostatic inkjet printing method, computer equipment, computer-readable storage medium, and computer program product acquire the electrostatic value of the area to be printed. Only when the electrostatic value meets preset conditions is the voltage applied to the conductive nozzle adjusted according to the electrostatic value, causing the conductive nozzle to eject ink for electrostatic inkjet printing. Thus, the abnormal electrodes of the Micro LED substrate are processed only when the electrostatic value of the area to be printed meets the requirements, effectively avoiding the problem of non-compliant printing size caused by the electrostatic value of the area to be printed not meeting the requirements, and ensuring the repair effect of the abnormal electrodes of the Micro LED substrate. Attached Figure Description

[0057] Figure 1 and Figure 2 These are structural block diagrams of the electro-hydraulic inkjet printing apparatus in different embodiments;

[0058] Figures 3-5 This is a flowchart illustrating the electrohydro-inkjet printing method in different embodiments;

[0059] Figure 6 This is an internal structural diagram of a computer device in one embodiment.

[0060] Explanation of reference numerals in the attached figures:

[0061] 1-Static eliminator, 2-Static measurement module, 3-Control module, 4-Conductive nozzle, 5-Output module, 6-Printing area, 7-Image monitoring module. Detailed Implementation

[0062] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0064] Electrostatic inkjet printing technology has become increasingly mature. Due to its high precision, this technology has been applied to scenarios with high requirements for post-printing accuracy, such as the Micro LED repair process. The principle is to apply a high voltage to the conductive tip of the conductive nozzle to give it a high potential. Based on electrostatic induction, when the conductive nozzle approaches the substrate, the charges on the substrate surface and inside migrate. Negative charges are distributed on the upper surface of the substrate, while positive charges are repelled and moved to the lower surface of the substrate away from the conductive nozzle. A stable voltage is formed between the conductive nozzle and the substrate. The droplets reaching the end of the conductive nozzle are affected by the voltage, and the microdroplets are polarized and positive charges accumulate on their surface. At the same time, under the action of multiple forces such as voltage force, viscosity force, and surface tension, the microdroplets are gradually stretched and deformed to form Taylor cones. Once the voltage force exceeds the surface tension of the microdroplets, the liquid at the tip of the Taylor cone will be ejected, forming a very fine jet. Combined with alternating voltage, the desired line or dot shape can be formed.

[0065] However, since electrohydraulic inkjet printing uses the principle of voltage, it is very sensitive to the processing environment, especially the static electricity of the substrate. Under the same printing voltage, the greater the static electricity of the substrate, the larger the printed size and the less stable the shape.

[0066] Traditional static electricity elimination methods primarily involve ionizing air into a large number of positive and negative ions using an static eliminator, and then using wind to blow these ions onto the surface of the object to neutralize static electricity. However, because the ions blown out by the wind are scattered and distributed, different areas on the substrate surface can easily have different static electricity values. It is difficult to ensure that the static electricity value of the area to be printed meets the requirements, so during processing, the problem of printing dimensions not meeting the accuracy requirements can still easily occur.

[0067] Therefore, this application aims to provide a solution that can solve the above-mentioned technical problems, the details of which will be described in subsequent embodiments.

[0068] In one embodiment, such as Figure 1 As shown, this application provides a current-current inkjet printing device, including: an electrostatic eliminator 1, an electrostatic measurement module 2, a control module 3, a conductive nozzle 4, and an output module 5. The electrostatic eliminator 1 is used to reduce the static electricity of the area 6 to be printed; the electrostatic measurement module 2 is used to measure the static electricity value of the area 6 to be printed; the control module 3 is connected to the electrostatic measurement module 2, used to acquire the static electricity value, and generate a voltage regulation signal based on the static electricity value when the static electricity value meets a preset condition; the conductive nozzle 4 is used to perform current-current inkjet printing on the area 6 to be printed under the action of an applied voltage; the output module 5 is connected to the conductive nozzle 4 and the control module 3 respectively, used to receive the voltage regulation signal, and adjust the voltage applied to the conductive nozzle 4 according to the voltage regulation signal.

[0069] The static eliminator 1 neutralizes static electricity by being placed near the surface of the object. The static electricity measurement module 2 may include an electrostatic potential meter. By aligning the electrostatic potential meter with the area to be printed 6, the electrostatic potential meter can measure the static electricity value of the area to be printed 6. The control module 3 may include a processor and a memory. The memory stores preset condition information. The processor compares the static electricity value with the preset conditions. When the static electricity value meets the preset conditions, it generates a voltage regulation signal based on the static electricity value. The memory also stores a static electricity value-standard voltage relationship table or formula. The processor determines the standard voltage corresponding to the current static electricity value based on the static electricity value-standard voltage relationship table or formula, and generates a voltage regulation signal corresponding to the standard voltage to adjust the voltage applied to the conductive nozzle 4 by the output module 5 to the standard voltage, thereby controlling the amount of ink ejected from the conductive nozzle 4 and thus controlling the printing size in the area to be printed 6.

[0070] In the application, when printing is required on the area to be printed (6), the control module 3 first acquires the position information of the area to be printed (6). Based on the position information, it determines the working positions of the static eliminator 1 and the static measurement module 2, and then moves them to their respective working positions. After the static eliminator 1 moves to the area to be printed (6), it operates to reduce the static electricity in the area. During this process, the static measurement module 2 continuously monitors the static electricity value of the area to be printed (6). The control module 3 acquires the static electricity value measured by the static measurement module 2. When the static electricity value meets a preset condition, it generates a voltage regulation signal based on the static electricity value, adjusting the voltage applied to the conductive nozzle 4 by the output module 5 to control the amount of ink ejected from the conductive nozzle 4. The duration of one working cycle of the static eliminator 1 can be preset. When the working time of the static eliminator 1 reaches the duration of one working cycle, the static eliminator 1 finishes its work and stops working.

[0071] It is understood that the above process is one embodiment of this application. The operation of the electrostatic measurement module 2 can also be controlled by the control module 3. When the control module 3 controls the electrostatic measurement module 2 to operate, the electrostatic measurement module 2 operates, measuring the electrostatic value of the area to be printed 6 and feeding it back to the control module 3. The control module 3 can also be connected to the electrostatic eliminator 1. The control module 3 obtains the operating information of the electrostatic eliminator 1. When the electrostatic eliminator 1 finishes operating, the control module 3 controls the electrostatic measurement module 2 to operate. The electrostatic measurement module 2 measures the electrostatic value of the area to be printed 6 and feeds it back to the control module 3, thereby avoiding the electrostatic measurement module 2 measuring invalid data, i.e., measuring the electrostatic value before the electrostatic eliminator 1 finishes operating. In addition, the electrostatic inkjet printing device can also include a drive module, which is used to drive the electrostatic eliminator 1, the electrostatic measurement module 2, and the conductive nozzle 4 to move respectively. The control module 3 can also be connected to the drive module, so that the electrostatic eliminator 1, the electrostatic measurement module 2, and the conductive nozzle 4 can be driven to move to a designated position respectively by controlling the drive module.

[0072] The aforementioned electrostatic inkjet printing device reduces static electricity in the printing area 6 through an electrostatic eliminator 1, measures the static electricity value of the printing area 6 through an electrostatic measurement module 2 and feeds it back to the control module 3, thereby monitoring the static electricity value of the printing area 6. The control module 3 generates a voltage regulation signal based on the static electricity value when the static electricity value meets the preset conditions, and adjusts the voltage applied to the conductive nozzle 4 by the output module 5, so that the conductive nozzle 4 ejects ink for inkjet printing. Thus, the printing area 6 is only processed when the static electricity value of the printing area 6 meets the requirements, effectively avoiding the problem of non-compliant printing size caused by the non-compliant static electricity value of the printing area 6, thereby improving the printing accuracy of the printing area 6.

[0073] In one embodiment, the control module 3 is further configured to acquire the maximum change value of the electrostatic value within a preset time period, and when the maximum change value is less than a first preset value and the electrostatic value is less than a second preset value within the preset time period, generate a voltage regulation signal based on the average value of each electrostatic value acquired within the preset time period.

[0074] It is understandable that, to ensure stable print size, the conductive nozzle 4 should perform inkjet printing only after the electrostatic value of the area to be printed 6 has stabilized. Therefore, it is necessary to detect whether the electrostatic value of the area to be printed 6 is in a stable state. By obtaining the maximum change value of the electrostatic value within a preset time period, the amplitude of the change value within the preset time period can be determined. When the maximum change value is less than the first preset value, it can be determined that the electrostatic value is in a stable state. If the electrostatic value is less than the second preset value within the preset time period, it can be determined that the electrostatic value meets the printing requirements of inkjet printing. At this time, the conductive nozzle 4 can be controlled to perform inkjet printing. A voltage regulation signal is generated based on the average value of each electrostatic value obtained within the preset time period. The voltage regulation signal controls the voltage applied to the conductive nozzle 4 by the output module 5, thereby controlling the output volume of the conductive nozzle 4.

[0075] In this embodiment, the control module 3 obtains the maximum change value of the electrostatic value within a preset time period. When the maximum change value is detected to be less than the first preset value and the electrostatic value is less than the second preset value within the preset time period, it is determined that the electrostatic value meets the preset condition. Based on the electrostatic value at this time, the voltage applied to the conductive nozzle 4 by the output module 5 is controlled, which can control the output amount of the conductive nozzle 4 and ensure that the printing size of the printing area is stable and meets the accuracy requirements.

[0076] In one embodiment, the control module 3 can also be connected to the static eliminator 1 to acquire the operating status of the static eliminator 1, and acquire the static value measured by the static measurement module 2 when the static eliminator 1 has finished working, and generate a voltage regulation signal based on the static value. Specifically, the control module 3 can control the static measurement module 2 to work to measure the static value of the area 6 to be printed when the static eliminator 1 has finished working.

[0077] In one embodiment, the control module 3 is also connected to the static eliminator 1; the control module 3 is also used to control the static eliminator 1 to work again when the static value does not meet the preset conditions, so as to reduce the static electricity in the area to be printed 6 again.

[0078] It is understandable that when the static electricity value does not meet the preset conditions, it is difficult to guarantee that the printing size of the area to be printed 6 meets the requirements, and inkjet printing cannot be performed at this time. Therefore, the static eliminator 1 is controlled to work again to further reduce the static electricity in the area to be printed 6.

[0079] In this embodiment, when the static electricity value of the area to be printed 6 does not meet the preset conditions, the control module 3 controls the static eliminator 1 to work again, thereby reducing the static electricity of the area to be printed 6 again and increasing the probability that the static electricity value of the area to be printed 6 meets the printing requirements.

[0080] In one embodiment, the control module 3 is further configured to acquire the static electricity value measured by the static electricity measurement module 2 after the static electricity eliminator 1 has finished working again, and output a first alarm signal if the static electricity value does not meet the preset conditions.

[0081] The first alarm signal may include at least one of the following: sound signal, light information, image signal, text signal, and vibration signal.

[0082] It is understandable that if the static eliminator 1 fails to meet the preset condition for static electricity value in the area to be printed 6 after two operations, it may be that the static eliminator 1 has malfunctioned or other problems have occurred. Therefore, the first alarm signal is output to prompt relevant personnel to check and determine the cause of the problem.

[0083] In this embodiment, after the static eliminator 1 has finished working again, the control module 3 obtains the static value measured by the static measurement module 2, and outputs a first alarm signal when the static value still does not meet the preset conditions, so as to promptly prompt relevant personnel to check and determine the cause of the problem.

[0084] In one embodiment, the area to be printed 6 includes an abnormal electrode of the Micro LED substrate, and the conductive nozzle 4 is used to perform electrofluid inkjet printing on the abnormal electrode of the Micro LED substrate under the action of an applied voltage, so as to repair the abnormal electrode into a normal electrode.

[0085] In this embodiment, the control module 3 adjusts the voltage applied to the conductive nozzle 4 according to the electrostatic value, which can precisely control the printing size and shape of the conductive nozzle 4, so that when the conductive nozzle 4 performs electrofluid inkjet printing on the abnormal electrode of the Micro LED substrate under the action of the applied voltage, the repair effect of the abnormal electrode is guaranteed.

[0086] In one embodiment, such as Figure 2As shown, the electro-hydraulic inkjet printer also includes an image monitoring module 7, which is connected to the control module 3. The image monitoring module 7 is used to acquire the printing image of the area to be printed 6. The control module 3 is also used to acquire the printing image, obtain the printing size based on the printing image, and output a second alarm signal when the printing size is greater than a third preset value.

[0087] In this embodiment, the image monitoring module 7 acquires the printing image of the area to be printed 6, so that the control module 3 can analyze the printing image to obtain the printing size. The control module 3 compares the printing size with a third preset value. When the printing size is greater than the third preset value, it determines that the printing size does not meet the printing accuracy requirements, outputs a second alarm signal, thereby indicating that there is a problem with the printing size of the area to be printed 6, and promptly prompts relevant personnel to check and determine the cause of the problem.

[0088] In one embodiment, the control module 3 is further configured to acquire the static elimination range of the static eliminator 1 and the first position information of each printing area 6; plan the first moving path of the static eliminator 1 according to the static elimination range and the first position information; and plan the second moving path of the conductive nozzle 4 according to the first moving path and the first position information.

[0089] The static eliminator 1 has a certain static elimination range. Multiple areas 6 to be printed may exist simultaneously within the static elimination range of the static eliminator 1. In this case, the static eliminator 1 can simultaneously reduce the static electricity of multiple areas 6 to be printed within its range. The static eliminator 1 does not need to move to the working position corresponding to each area 6 individually. After the static eliminator 1 can simultaneously reduce the static electricity of multiple areas 6 to be printed within its range, the conductive nozzle 4 should perform inkjet printing on the area 6 to be printed after the static electricity has been reduced. Therefore, it should preferentially move between the multiple areas 6 to be printed within its range. For example, when the static eliminator 1 is in the working position corresponding to area A to be printed, and areas B and C to be printed exist simultaneously within its range, the static eliminator 1 can simultaneously reduce the static electricity of areas A, B, and C. The static eliminator 1 does not need to subsequently move to the working positions corresponding to areas B and C. After printing area A, the conductive nozzle 4 should subsequently move to one of areas B and C, and then to the other.

[0090] In this embodiment, the first moving path of the static eliminator 1 is planned according to the static elimination range and each first position information, which can reduce the number of times the static eliminator 1 moves. The second moving path of the conductive nozzle 4 is planned according to the first moving path and each first position information, and matched with the moving path of the static eliminator 1, which can reduce the waiting time for static treatment and improve printing efficiency.

[0091] In one embodiment, planning the first movement path of the static eliminator 1 based on the static elimination range and each first position information includes: obtaining candidate working positions for each printable area 6 corresponding to the static eliminator 1; determining the number of printable areas 6 within the static elimination range of the static eliminator 1 when the static eliminator 1 is at each candidate working position; determining the first movement order of each candidate working position based on the position information of each candidate working position; determining the priority of each candidate working position based on the number corresponding to each candidate working position and the first movement order; determining the highest priority candidate working position among the candidate working positions as the target working position, and performing a filtering operation, wherein the filtering operation includes: recording the target working position; obtaining the printable areas 6 within the static elimination range of the static eliminator 1 when the static eliminator 1 is at the target working position; excluding the candidate working positions corresponding to the printable areas 6 within the static elimination range; taking the highest priority candidate working position among the remaining candidate working positions as the new target working position; returning to perform the filtering operation until all candidate working positions are excluded; and determining the first movement path based on the position information of each target working position.

[0092] The processing order of each printing area 6 can be pre-determined based on the row and column order. Then, the movement order of each candidate work position (i.e., the first movement order) is determined based on the processing order of each printing area 6. After determining the first movement order, the priority of each candidate work position is determined based on the number of printing areas 6 corresponding to each candidate work position and the first movement order. When comparing two candidate work positions, the number of corresponding printing areas 6 is compared first, with higher priority for the position with more corresponding areas 6. If the number of corresponding printing areas 6 is the same, the position with the earlier movement order has higher priority. For example, candidate work positions a and b both have the number of printing areas 6 c, but based on the first movement order, the movement order of candidate work position a precedes that of candidate work position b, so candidate work position a has a higher priority than candidate work position b. Based on the above comparison method, the priority of each candidate work position can be determined, and then each target work position can be determined by repeatedly performing the filtering operation. The first moving path is determined based on the location information of each target working position. This can be done by determining the first moving path based on the moving distance, taking the path that passes through each target working position and has the shortest total moving distance as the first moving path; or it can be determined based on the row and column order of the printing area 6 corresponding to each target working position.

[0093] In one embodiment, the number of static eliminators 1 is multiple; the control module 3 is further configured to determine the second movement sequence and the second position information of each working position corresponding to the static eliminator 1 according to the first movement path; determine the working position corresponding to the candidate static eliminator 1 according to the second movement sequence and the second position information, wherein the candidate static eliminator 1 is the remaining static eliminator 1 located outside the current printing area 6; and control the candidate static eliminator 1 to move to the corresponding working position.

[0094] For example, there are two static eliminators 1. When one static eliminator 1 is in the working position corresponding to the current printing area 6, the next working position of the static eliminator 1 can be determined, and the other static eliminator 1 can be moved to the next working position. Then, the static eliminator 1 works in advance to weaken the static electricity of the corresponding printing area 6 corresponding to the next working position. Therefore, when printing the corresponding printing area 6 corresponding to the next working position, there is no need to wait for the static eliminator 1 to weaken the static electricity.

[0095] In this embodiment, the working position corresponding to the candidate static eliminator 1 is determined according to the second moving order and each second position information, and the candidate static eliminator 1 is controlled to move to the corresponding working position, thereby performing static treatment on the subsequent printing area 6 in advance, reducing the time of the entire printing process and improving printing efficiency.

[0096] In one embodiment, the control module 3 is further configured to obtain a first type sorting number for each area to be printed 6 according to a second moving order, wherein the first type sorting numbers of the areas to be printed 6 within the same electrostatic elimination range are the same; determine a candidate sorting for each area to be printed 6 according to each first position information; determine the processing order corresponding to each area to be printed 6 according to the candidate sorting and the first type sorting number; and plan a second moving path for the conductive nozzle 4 according to the processing order corresponding to each area to be printed 6.

[0097] Specifically, for each printable area 6 with a different first type sort number, the printable area 6 with the first type sort number is processed first. For each printable area 6 with the same first type sort number, the printable area 6 with the candidate sort number is processed first. Based on this method, the processing order of each printable area 6 can be determined.

[0098] Based on the same concept, in one embodiment, such as Figure 3 As shown, this application also provides a method for electrohydraulic inkjet printing, including:

[0099] S301: Obtain the electrostatic value of the area to be printed, wherein the area to be printed includes the abnormal electrode of the Micro LED substrate;

[0100] S302: When the electrostatic value meets the preset conditions, the voltage applied to the conductive nozzle is adjusted according to the electrostatic value to control the conductive nozzle to perform electrofluid inkjet printing on the abnormal electrode and repair the abnormal electrode into a normal electrode.

[0101] In this embodiment, the electrostatic value of the area 6 to be printed is obtained. Only when the electrostatic value meets a preset condition is the voltage applied to the conductive nozzle 4 adjusted according to the electrostatic value, causing the conductive nozzle 4 to eject ink for electrohydraulic inkjet printing. This ensures that the abnormal electrodes of the Micro LED substrate are processed only when the electrostatic value of the area 6 to be printed meets the requirements, effectively avoiding the problem of non-compliant printing dimensions caused by the electrostatic value of the area 6 not meeting the requirements, and guaranteeing the repair effect of the abnormal electrodes of the Micro LED substrate. In one embodiment, adjusting the voltage applied to the conductive nozzle according to the electrostatic value when the electrostatic value meets the preset condition includes: when the maximum change value of the electrostatic value within a preset time period is less than a first preset value, and the electrostatic value is less than a second preset value within the preset time period, adjusting the voltage applied to the conductive nozzle according to the average value of each electrostatic value obtained within the preset time period.

[0102] In one embodiment, the electrostatic inkjet printing method further includes: when the electrostatic value does not meet a preset condition, controlling the electrostatic eliminator to work again to further reduce the electrostatic charge in the area to be printed.

[0103] In one embodiment, the electrostatic inkjet printing method further includes: after the electrostatic eliminator has finished working again, acquiring the electrostatic value of the area to be printed; if the electrostatic value does not meet the preset conditions, outputting a first alarm signal.

[0104] In one embodiment, such as Figure 4 As shown, the electrohydraulic inkjet printing method also includes:

[0105] S401: Obtain the print image of the area to be printed;

[0106] S402: Obtain the printing size based on the printed image, and output a second alarm signal when the printing size is greater than a third preset value.

[0107] In one embodiment, such as Figure 5 As shown, the electrohydraulic inkjet printing method also includes:

[0108] S501: Obtain the static elimination range of the static eliminator and the first position information of each area to be printed;

[0109] S502: Plan the first moving path of the static eliminator according to the static elimination range and the first position information;

[0110] S503: Plan the second movement path of the conductive nozzle based on the first movement path and each first position information.

[0111] In one embodiment, planning the first movement path of the static eliminator based on the static elimination range and each first position information includes: obtaining candidate working positions for each area to be printed corresponding to the static eliminator; determining the number of areas to be printed within the static elimination range of the static eliminator when the static eliminator is at each candidate working position; determining the first movement order of each candidate working position based on the position information of each candidate working position; determining the priority of each candidate working position based on the number corresponding to each candidate working position and the first movement order; determining the highest priority candidate working position among the candidate working positions as the target working position, and performing a filtering operation, wherein the filtering operation includes: recording the target working position; obtaining the areas to be printed within the static elimination range of the static eliminator when the static eliminator is at the target working position; excluding the candidate working positions corresponding to the areas to be printed within the static elimination range; taking the highest priority candidate working position among the remaining candidate working positions as the new target working position; returning to perform the filtering operation until all candidate working positions are excluded; and determining the first movement path based on the position information of each target working position.

[0112] In one embodiment, the number of static eliminators is multiple; the electrostatic inkjet printing method further includes: determining a second movement sequence and second position information of each working position corresponding to the static eliminator according to a first movement path; determining a working position corresponding to a candidate static eliminator according to the second movement sequence and the second position information, wherein the candidate static eliminator is the remaining static eliminator located outside the current printing area; and controlling the candidate static eliminator to move to the corresponding working position.

[0113] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0114] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 6As shown, the computer device includes a processor, memory, communication interface, display unit, and input device connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage medium. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a fluid inkjet printing method. The display unit can be a liquid crystal display (LCD) or an electronic ink display. The input device can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the computer device's casing, or an external keyboard, touchpad, or mouse.

[0115] Those skilled in the art will understand that Figure 6 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0116] This application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the electrohydraulic inkjet printing method as described in any of the above embodiments.

[0117] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the electrohydraulic inkjet printing method as described in any of the above embodiments.

[0118] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the electrohydraulic inkjet printing method as described in any of the above embodiments.

[0119] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0120] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0121] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An electrofluidic inkjet printing device, characterized by, The method comprises the steps of: an electrostatic eliminator is used to weaken the static electricity of a to-be-printed area; an electrostatic measurement module is used to measure the static electricity value of the to-be-printed area; a control module is connected with the electrostatic measurement module, and is used to acquire the static electricity value, and generate a voltage adjustment signal according to the static electricity value when the static electricity value meets a preset condition, wherein the preset condition comprises that the maximum change value of the static electricity value within a preset time length is less than a first preset value, and the static electricity value within the preset time length is less than a second preset value, and the control module is specifically used to generate the voltage adjustment signal according to the average value of each static electricity value acquired within the preset time length when the preset condition is met; a conductive nozzle is used to perform electrofluid inkjet printing on the to-be-printed area under the action of an applied voltage; an output module is connected with the conductive nozzle and the control module, and is used to receive the voltage adjustment signal, and adjust the voltage applied to the conductive nozzle according to the voltage adjustment signal.

2. The electrofluidic inkjet printing device of claim 1, wherein, The control module is also connected with the electrostatic eliminator; The control module is also used to control the electrostatic eliminator to work again to weaken the static electricity of the to-be-printed area again when the static electricity value does not meet the preset condition.

3. The electrofluidic inkjet printing device of claim 2, wherein, The control module is also used to acquire the static electricity value measured by the electrostatic measurement module after the electrostatic eliminator works again, and output a first alarm signal if the static electricity value does not meet the preset condition.

4. The electrohydrodynamic inkjet printing apparatus of claim 1, wherein, The to-be-printed area comprises an abnormal electrode of a Micro LED substrate, and the conductive nozzle is used to perform electrofluid inkjet printing on the abnormal electrode of the Micro LED substrate under the action of an applied voltage, so as to repair the abnormal electrode to a normal electrode.

5. The electrohydrodynamic inkjet printing device of any one of claims 1 to 4, wherein, Further comprising: an image monitoring module connected with the control module, wherein the image monitoring module is used to collect a printing image of a to-be-printed area; The control module is also used to acquire the printing image, acquire the printing size according to the printing image, and output a second alarm signal when the printing size is greater than a third preset value.

6. An electrofluidic inkjet printing method using the electrofluidic inkjet printing apparatus according to any one of claims 1 to 5, characterized by, The method comprises the steps of: acquiring the static electricity value of a to-be-printed area, wherein the to-be-printed area comprises an abnormal electrode of a Micro LED substrate; when the static electricity value meets a preset condition, adjusting the voltage applied to a conductive nozzle according to the static electricity value, so as to control the conductive nozzle to perform electrofluid inkjet printing on the abnormal electrode, and repair the abnormal electrode to a normal electrode; wherein the preset condition comprises that the maximum change value of the static electricity value within a preset time length is less than a first preset value, and the static electricity value within the preset time length is less than a second preset value, and the adjusting the voltage applied to the conductive nozzle according to the static electricity value comprises: adjusting the voltage applied to the conductive nozzle according to the average value of each static electricity value acquired within the preset time length.

7. The electrohydrodynamic inkjet printing method according to claim 6, wherein The method further comprises: when the static electricity value does not meet the preset condition, controlling the electrostatic eliminator to work again to weaken the static electricity of the to-be-printed area again.

8. The electrohydrodynamic inkjet printing method of claim 7, wherein, The method further comprises: after the electrostatic eliminator works again, acquiring the static electricity value of the to-be-printed area; if the static electricity value does not meet the preset condition, outputting a first alarm signal.

9. The electrohydrodynamic inkjet printing method of claim 8, wherein, The method further comprises: acquire a print image of a to-be-printed region; acquire the print size according to the print image, and output a second alarm signal when the print size is greater than a third preset value.

10. The electrohydrodynamic inkjet printing method according to any one of claims 6 to 9, wherein The method further comprises: acquire an electrostatic elimination range of the electrostatic eliminator and first position information of each to-be-printed region; plan a first movement path of the electrostatic eliminator according to the electrostatic elimination range and the first position information of each to-be-printed region; plan a second movement path of the conductive nozzle according to the first movement path and the first position information of each to-be-printed region.

11. The electrohydrodynamic inkjet printing method of claim 10, wherein, The method further comprises: acquire a candidate working position of the electrostatic eliminator corresponding to each to-be-printed region; determine a number of to-be-printed regions within the electrostatic elimination range of the electrostatic eliminator when the electrostatic eliminator is at each candidate working position; determine a first movement sequence of each candidate working position according to position information of each candidate working position; determine a priority of each candidate working position according to the number corresponding to each candidate working position and the first movement sequence; determine a target working position as a candidate working position with the highest priority among the candidate working positions, and perform a screening operation, wherein the screening operation comprises: recording the target working position, acquiring to-be-printed regions within the electrostatic elimination range of the electrostatic eliminator when the electrostatic eliminator is at the target working position, excluding candidate working positions corresponding to to-be-printed regions within the electrostatic elimination range, taking a candidate working position with the highest priority among the remaining candidate working positions as a new target working position, and returning to perform the screening operation until all candidate working positions are excluded; determine the first movement path according to position information of each target working position.

12. The electrofluidic inkjet printing method of claim 11, wherein, The number of electrostatic eliminators is multiple; the method further comprises: determine a second movement sequence of each working position corresponding to the electrostatic eliminator and second position information of each working position according to the first movement path; determine a working position corresponding to a candidate electrostatic eliminator according to the second movement sequence and the second position information, wherein the candidate electrostatic eliminator is a remaining electrostatic eliminator outside a current to-be-printed region; control the candidate electrostatic eliminator to move to the corresponding working position.

13. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that, The processor executes the computer program to implement the steps of the method of any one of claims 6 to 12.

14. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method of any one of claims 6 to 12.

15. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method of any one of claims 6 to 12.

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