Nozzle treatment method, system and device

Abstract

The present application relates to a nozzle processing method, system and device. The nozzle processing method of the present application comprises the following steps: providing a test substrate, the surface of the test substrate having a plurality of preset regions; providing a plurality of to-be-tested nozzles, the to-be-tested nozzles providing ink to the preset regions. An optical signal of each preset region is acquired as a judgment signal. The judgment signals are compared, and a target nozzle is determined from the plurality of to-be-tested nozzles.

Description

Technical Field

[0001] This application relates to the field of inkjet printing technology, and in particular to a nozzle processing method, nozzle processing system, and nozzle processing device. Background Technology

[0002] Inkjet printing is one of the processes used to fabricate organic light-emitting diodes (OLEDs) or quantum dot light-emitting diodes (QLEDs). Functional layers such as the hole injection layer, hole transport layer, and light-emitting layer can all be fabricated using inkjet printing. Currently, in inkjet printing, suitable nozzles need to be selected before the printing task. However, traditional nozzle selection methods are not very effective and require further improvement. Summary of the Invention

[0003] Therefore, it is necessary to provide a nozzle treatment method, a nozzle treatment system, and a nozzle treatment device.

[0004] In a first aspect, this application provides a nozzle treatment method, comprising the following steps:

[0005] A test substrate is provided, the surface of which has multiple predetermined areas;

[0006] Multiple nozzles are provided for testing, and ink is supplied to the preset area through the nozzles for testing.

[0007] The optical signals of each of the preset regions are acquired as judgment signals;

[0008] By comparing the various judgment signals, the target nozzle is determined from the plurality of nozzles to be tested.

[0009] In some embodiments, the nozzle treatment method includes the following steps:

[0010] A test substrate is provided, the surface of which has multiple predetermined areas;

[0011] Multiple nozzles are provided for testing, and ink is supplied to the preset area through the nozzles to form multiple ink droplets, wherein the ink includes a luminescent material;

[0012] Acquire the optical signal of at least one of the ink droplets as a reference signal;

[0013] The optical signals of each of the preset regions are acquired as judgment signals;

[0014] The target nozzle is determined from the plurality of nozzles to be tested by comparing each of the judgment signals and the reference signal.

[0015] In some embodiments, comparing each of the judgment signals and the reference signal to determine the target nozzle from a plurality of nozzles to be tested includes the following steps:

[0016] When the rate of change of the judgment signal relative to the reference signal is less than or equal to a preset threshold, the nozzle corresponding to the preset region is judged to be a qualified nozzle; otherwise, the nozzle corresponding to the preset region is judged to be a non-qualified nozzle.

[0017] In some embodiments, the reference signal includes the peak intensity of the optical signal of any ink droplet on the test substrate;

[0018] The judgment signal includes the peak intensity of the optical signal in each of the preset regions;

[0019] The rate of change is the rate of change of the peak intensity of the judgment signal relative to the peak intensity of the reference signal.

[0020] In some embodiments, the preset threshold is 0% to 5%.

[0021] In some embodiments, acquiring the optical signal of at least one of the ink droplets as a reference signal includes:

[0022] At least one ink droplet on the test substrate is irradiated by an excitation light source to cause the ink droplet to emit a first excitation signal, and the first excitation signal is used as a reference signal.

[0023] Acquiring the optical signals of each of the preset regions as judgment signals includes:

[0024] The preset area is illuminated by the excitation light source, causing the preset area to emit a second excitation signal, which is then used as a judgment signal.

[0025] In some embodiments, the test substrate includes a light-transmitting substrate.

[0026] In some embodiments, the excitation source includes an ultraviolet light source.

[0027] In some embodiments, the light transmittance of the light-transmitting substrate is ≥80%.

[0028] In some embodiments, the emission wavelength of the excitation light source is λ, where 280nm ≤ λ < 400nm.

[0029] In some embodiments, the light-transmitting substrate includes a hydrophobic light-transmitting substrate; and / or

[0030] The luminescent material includes at least one of organic luminescent materials and quantum dot luminescent materials; and / or

[0031] Multiple preset regions are distributed in a dot matrix on the surface of the test substrate.

[0032] In some embodiments, after comparing the determination signals to determine the target nozzle from the plurality of nozzles to be tested, the method further includes the following steps:

[0033] Print using the target nozzle.

[0034] Secondly, this application provides a nozzle processing system, including a control module, a judgment signal acquisition module, and a signal judgment module;

[0035] It also includes a test substrate, the surface of which has multiple preset areas; the preset areas are coated with ink.

[0036] The judgment signal acquisition module is used to acquire the optical signal of each preset area as a judgment signal;

[0037] The signal judgment module is used to compare the judgment signals to determine the target nozzle from the plurality of nozzles to be tested.

[0038] Thirdly, this application provides a nozzle treatment device.

[0039] A test substrate and a controller, wherein the surface of the test substrate has multiple preset areas;

[0040] The controller is used to control multiple nozzles to supply ink to the preset area;

[0041] The controller is also used to acquire the optical signals of each of the preset areas as a judgment signal;

[0042] The controller is also used to compare the judgment signals to determine the target nozzle from the plurality of nozzles to be tested.

[0043] In some embodiments, the nozzle processing apparatus further includes: a transfer device, an excitation light source, and a detection device, wherein the transfer device, the excitation light source, and the detection device are all electrically connected to the controller;

[0044] The transfer device is used to transfer the test substrate;

[0045] The excitation light source is used to illuminate the preset area to cause the preset area to emit a second excitation signal;

[0046] The detection device is used to receive the second excitation signal;

[0047] The detection device and the excitation light source are located on opposite sides of the test substrate; and / or

[0048] The test substrate includes a light-transmitting substrate.

[0049] The nozzle processing method of this application can quickly identify the target nozzle from the nozzles to be tested. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of a nozzle treatment method provided in an embodiment of this application;

[0051] Figure 2 This is a schematic diagram of the structure of a nozzle treatment device provided in an embodiment of this application;

[0052] Figure 3 This is a schematic diagram of a preset area and its corresponding laser signal provided in an embodiment of this application.

[0053] Explanation of reference numerals in the attached figures

[0054] 10. Ink cartridge; 11. Inkjet printhead; 20. Transparent substrate; 30. Transfer device; 40. Excitation light source; 50. Detection device; 60. Guide component; 70. Controller. Detailed Implementation

[0055] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, a detailed description of specific embodiments of this application is provided below. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0056] 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 is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] Reference Figure 1 As shown, one embodiment of this application provides a nozzle treatment method, including the following steps:

[0059] S10: Provide a test substrate with multiple preset areas on its surface; provide multiple nozzles to be tested, and provide ink to the preset areas through the nozzles to be tested;

[0060] S20: Acquire the light signals of each preset area as judgment signals;

[0061] S30: Compare the various judgment signals to determine the target nozzle from multiple nozzles to be tested.

[0062] In the above nozzle processing method, ink is jet printed onto the surface of a substrate with multiple preset areas, and each nozzle corresponds one-to-one with a preset area. After acquiring the light signal of each preset area, it is used as a judgment signal for comparison. By filtering judgment signals that differ from other judgment signals, the nozzles corresponding to each judgment signal can be selected. This nozzle processing method can quickly determine the target nozzle. Furthermore, using light signals as judgment signals results in high detection accuracy.

[0063] Under normal circumstances, when ink is supplied to a preset area through the nozzle under test, forming multiple ink droplets, some droplets will be completely within the preset area, while others may not. When there are droplets not completely within the preset area, the judgment signal corresponding to that preset area will differ from other judgment signals. By comparing the various judgment signals and identifying the judgment signal that differs from the others, it is possible to determine that the nozzle corresponding to that preset area is a defective nozzle.

[0064] In some embodiments, the nozzle treatment method includes the following steps:

[0065] A test substrate is provided, the surface of which has multiple preset areas; multiple test nozzles are provided, through which ink is supplied to the preset areas to form multiple ink droplets, wherein the ink includes a luminescent material;

[0066] Acquire the optical signal of at least one ink droplet as a reference signal;

[0067] Acquire the light signals of each preset area as judgment signals;

[0068] By comparing the various judgment signals and the reference signal, the target nozzle is determined from multiple nozzles to be tested.

[0069] Using the optical signal of at least one ink droplet as a reference signal and comparing each judgment signal with the reference signal can reduce the error impact when comparing judgment signals laterally. It should be noted that in extreme cases, it is possible that all ink droplets are not completely within the preset area, which will introduce errors in the processing results. By using the optical signal of at least one ink droplet as a reference signal and comparing each judgment signal with the reference signal, the error impact of this extreme case can be reduced, improving the accuracy of nozzle selection. Furthermore, using the optical signal as both the reference and judgment signal results in higher detection accuracy, enabling more precise selection of target nozzles.

[0070] In some embodiments, comparing each judgment signal and a reference signal to determine the target nozzle from a plurality of nozzles to be tested includes the following steps: when the rate of change of the judgment signal relative to the reference signal is less than or equal to a preset threshold, the nozzle corresponding to the preset region is determined to be a qualified nozzle; otherwise, the nozzle corresponding to the preset region is determined to be an unqualified nozzle.

[0071] When an ink droplet is located within its corresponding preset area, the rate of change of the judgment signal corresponding to that preset area relative to the reference signal will be less than or equal to a preset threshold. When an ink droplet is not completely located within its corresponding preset area, the rate of change of the judgment signal corresponding to that preset area relative to the reference signal will be greater than the preset threshold. By comparing whether the rate of change of the judgment signal corresponding to each preset area relative to the reference signal is less than or equal to the preset threshold, it is possible to screen whether each nozzle is qualified, enabling rapid screening of qualified nozzles.

[0072] Understandably, the rate of change is the percentage of the absolute value of the difference between the judgment signal and the reference signal relative to the reference signal.

[0073] In some embodiments, the reference signal includes the peak intensity of the light signal of any ink droplet on the test substrate; the judgment signal includes the peak intensity of the light signal in each preset area; and the rate of change is the rate of change of the peak intensity of the judgment signal relative to the peak intensity of the reference signal. Using the peak intensity of the light signal as both the reference and judgment signals allows for convenient calculation of the rate of change, thereby providing a clear visual representation of the nozzle's judgment result.

[0074] In some embodiments, the preset threshold is 0% to 5%. It is understood that the preset threshold can be set according to requirements in different application scenarios to achieve nozzle screening with different levels of precision. Optionally, the preset threshold is 5%, 4%, 3%, 2%, 1%, or 0%.

[0075] In some embodiments, acquiring the optical signal of at least one ink droplet as a reference signal includes: irradiating at least one ink droplet on the test substrate with an excitation light source to cause the ink droplet to emit a first excitation signal, and using the first excitation signal as the reference signal. Acquiring the optical signals of each preset area as a judgment signal includes: irradiating the preset area with an excitation light source to cause the preset area to emit a second excitation signal, and using the second excitation signal as the judgment signal. It is understood that when irradiating any ink droplet with an excitation light source to cause it to emit a laser signal, the irradiation accuracy of the excitation light source can be controlled so that it irradiates exactly a single ink droplet, and the first excitation signal of that ink droplet is used as the reference signal. When irradiating the preset area with an excitation light source, it is also possible to control the excitation light source to irradiate only each preset area. If the corresponding ink droplet is located within the preset area, the rate of change between its emitted laser signal and the reference signal will be less than or equal to the reference signal. When the corresponding ink droplet is not completely located within the preset area, the laser signal corresponding to the preset area is only the laser signal emitted by a portion of the single ink droplet located within the preset area, and the rate of change between the laser signal and the reference signal will be greater than a preset threshold. Meanwhile, if the nozzle corresponding to a certain preset area is not working or the ejected ink droplets are completely outside the preset area, the light signal corresponding to that preset area is zero.

[0076] In some embodiments, the test substrate includes a light-transmitting substrate. Using a light-transmitting substrate as the test substrate allows for the irradiation of the surface of the substrate with a predetermined area using an excitation light source, and the reception of the laser signal on the opposite surface of that surface, which facilitates operation.

[0077] In some embodiments, the excitation source includes an ultraviolet (UV) light source. UV light has high energy, and irradiating the luminescent material with UV light can excite the material to emit light. Simultaneously, using UV light as the excitation source also excites the luminescent material in the ink droplet to emit visible light, facilitating the reception of laser signals.

[0078] In some embodiments, the light transmittance of the light-transmitting substrate is ≥80%. It is understood that light transmittance refers to the percentage of luminous flux passing through the light-transmitting substrate relative to the incident luminous flux. Optionally, the light transmittance of the light-transmitting substrate is 80% to 98%. More preferably, the light transmittance of the light-transmitting substrate is 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, or 98%. Alternatively, the light transmittance of the light-transmitting substrate may also be within the range between any two of the above-mentioned light transmittance values.

[0079] In some embodiments, the emission wavelength of the excitation light source is λ, where 280nm ≤ λ < 400nm. Optionally, the emission wavelength of the excitation light source is 280nm, 285nm, 290nm, 295nm, 300nm, 305nm, 310nm, 315nm, 320nm, 325nm, 330nm, 335nm, 340nm, 3nm, 350nm, 355nm, 360nm, 365nm, 370nm, 375nm, 380nm, 3nm, 390nm, 395nm, or 399nm.

[0080] In some embodiments, a plurality of predetermined regions are distributed in a dot matrix on the surface of the test substrate.

[0081] In some embodiments, a plurality of predetermined regions are distributed at equal intervals in a lattice on the surface of the test substrate.

[0082] In some embodiments, the luminescent material includes organic luminescent materials or quantum dot luminescent materials.

[0083] In some embodiments, the organic light-emitting material is selected from at least one of diaromatic anthracene derivatives, stilbene aromatic derivatives, pyrene derivatives or fluorene derivatives, blue-emitting TBPe fluorescent materials, green-emitting TTPA fluorescent materials, orange-emitting TBRb fluorescent materials, and red-emitting DBP fluorescent materials; the quantum dot light-emitting material is selected from at least one of single-structure quantum dots, core-shell structure quantum dots, and perovskite semiconductor materials, wherein the single-structure quantum dots are selected from at least one of group II-VI compounds, group IV-VI compounds, group III-V compounds, and group I-III-VI compounds, and group II-VI compounds are selected from CdS, CdSe, etc. CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe , CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and HgZnST At least one of e, the IV-VI group compounds are selected from at least one of SnS, SnSe, SnTe, PbS, PbSe, PbTe, SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, SnPbSSe, SnPbSeTe, SnPbSTe, and the III-V group compounds are selected from at least one of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, GaNP, GaNAs, GaNSb, GaPAs, and Ga At least one of PSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, and InAlPSb, and the I-III-VI group compounds are selected from at least one of CuInS2, CuInSe2, and AgInS2;The core of the core-shell quantum dot is selected from any of the single-structure quantum dots mentioned above, and the shell material of the core-shell quantum dot is selected from at least one of CdS, CdTe, CdSeTe, CdZnSe, CdZnS, CdSeS, ZnSe, ZnSeS, and ZnS; the perovskite semiconductor material is selected from doped or undoped inorganic perovskite semiconductors, organic perovskite semiconductors, or organic-inorganic hybrid perovskite semiconductors; the general structural formula of inorganic perovskite semiconductors is AMX3, where A is Cs; + Ion, M is a divalent metal cation selected from Pb 2+ Sn 2+ Cu 2+ Ni 2+ Cd 2+ Cr 2+ Mn 2+ Co 2+ Fe 2+ 、Ge 2+ Yb 2+ and Eu 2+ At least one of them, where X is a halide anion selected from Cl. - ,Br - I - At least one of the following; the general structural formula of organic perovskite semiconductors is CMX3, where C is formamidinyl, M is a divalent metal cation, and M is selected from Pb. 2+ Sn 2+ Cu 2+ Ni 2+ Cd 2+ Cr 2+ Mn 2+ Co 2+ Fe 2+ 、Ge 2+ Yb 2+ and Eu 2+ At least one of them, where X is a halide anion selected from Cl. - ,Br - Or I - At least one of the following; the general structural formula of organic-inorganic hybrid perovskite semiconductors is BMX3, where B is an organic amine cation selected from CH3(CH2). n -2NH3 + Or [NH3(CH2)] n NH3]2 + Where n≥2, M is a divalent metal cation selected from Pb 2+ Sn 2+ Cu 2+ Ni 2+ Cd 2+ Cr 2+Mn 2+ Co 2+ Fe 2+ 、Ge 2+ Yb 2+ and Eu 2+ At least one of them, where X is a halide anion selected from Cl. - ,Br - I - At least one of them.

[0084] In some embodiments, the light-transmitting substrate includes a hydrophobic light-transmitting substrate. Using a hydrophobic light-transmitting substrate as the light-transmitting substrate makes it less likely for ink droplets to spread on the surface of the substrate, allowing for more accurate positioning of the ink droplets on the substrate and thus achieving better judgment results.

[0085] In some embodiments, the hydrophobic and light-transmitting substrate includes at least one of PI film, PET film, PTFE film, PDMS film, and PMMA film.

[0086] In some embodiments, after comparing the judgment signals to determine the target nozzle from a plurality of nozzles to be tested, the method further includes the following steps:

[0087] Print using the target nozzle.

[0088] Another embodiment of this application provides a nozzle processing system, including a control module, a judgment signal acquisition module, and a signal judgment module. It also includes a test substrate, the surface of which has multiple preset areas; each preset area carries ink. The judgment signal acquisition module acquires the light signals from each preset area as judgment signals. The signal judgment module compares the judgment signals to determine the target nozzle from a plurality of nozzles to be tested.

[0089] In some embodiments, a preset area carries multiple ink droplets, which are formed by ink supplied by the nozzle to be tested, wherein the ink includes a luminescent material.

[0090] In some embodiments, the nozzle processing system further includes a reference signal acquisition module, which is used to acquire the optical signal of at least one ink droplet as a reference signal.

[0091] In some embodiments, the signal determination module is used to compare the determination signal and the reference signal to determine the target nozzle from a plurality of nozzles to be tested.

[0092] In some embodiments, the nozzle processing system further includes a print control module for controlling the target nozzle to print.

[0093] Another embodiment of this application provides a nozzle processing apparatus, including a test substrate and a controller. The surface of the test substrate has multiple preset areas. The controller is used to control multiple nozzles to be tested to provide ink to the preset areas. The controller is also used to acquire the light signal of each preset area as a judgment signal. The controller is also used to compare the judgment signals and determine the target nozzle from the multiple nozzles to be tested.

[0094] In some embodiments, the controller is used to control multiple nozzles to supply ink to a preset area to form multiple ink droplets, wherein the ink includes a luminescent material.

[0095] In some embodiments, the controller is also configured to acquire the optical signal of at least one ink droplet as a reference signal.

[0096] In some embodiments, the controller is also used to compare the judgment signal and the reference signal to determine the target nozzle from a plurality of nozzles to be tested.

[0097] In some embodiments, the controller is also used to control the target nozzle to print.

[0098] Reference Figure 2 As shown, in some embodiments, the nozzle processing device further includes a transfer device 30, an excitation light source 40, and a detection device 50, wherein the transfer device 30, the excitation light source 40, and the detection device 50 are all electrically connected to the controller 70. The transfer device 30 is used to transfer the test substrate. The test substrate includes a light-transmitting substrate 20, and the excitation light source 40 is used to irradiate a preset area to cause the preset area to emit a second excitation signal. The detection device 50 is used to receive the first excitation signal and the second excitation signal. The detection device 50 and the excitation light source 40 are located on opposite sides of the light-transmitting substrate 20. The dashed lines indicate electrical connections between the devices. The excitation light source 40 and the detection device 50 are positioned on opposite sides of the light-transmitting substrate 20 to facilitate the reception of the laser signal.

[0099] In some embodiments, the excitation light source 40 is also used to irradiate at least one ink droplet on the test substrate to cause the ink droplet to emit a first excitation signal.

[0100] In some embodiments, the detection device 50 is further configured to receive a first excitation signal.

[0101] In some embodiments, the nozzle processing device further includes an ink cartridge 10 for storing ink and capable of mounting an inkjet printhead 11.

[0102] In some embodiments, the excitation light source 40 is positioned toward the surface of the light-transmitting substrate 20 where a preset area is provided, and the detection device 50 is positioned opposite the surface of the light-transmitting substrate 20 where the preset area is provided.

[0103] In some embodiments, the nozzle processing apparatus further includes a guide 60 for guiding the transparent substrate to the excitation light source 40. The guide 60 allows the transparent substrate 20 to be turned, facilitating the placement of the excitation light source 40 and the detection device 50, thereby saving space occupied by the nozzle processing apparatus.

[0104] Another embodiment of this application provides an inkjet printing method, including the following steps: determining a target nozzle according to any of the above-mentioned nozzle processing methods; and performing inkjet printing using the target nozzle.

[0105] Another embodiment of this application provides an inkjet printing system, including a nozzle processing module and a print control module; the nozzle processing module is used to determine a target nozzle according to any of the above nozzle processing methods; the print control module is used to control the target nozzle to perform inkjet printing.

[0106] Another embodiment of this application provides an inkjet printing apparatus, including a nozzle and a printing controller; the nozzle is used to supply ink to a substrate; the printing controller is used to determine a target nozzle according to any of the above nozzle processing methods; the printing controller is also used to control the target nozzle to perform inkjet printing.

[0107] Reference Figure 3 In one specific embodiment, the nozzle is treated using the nozzle treatment method of this application. Figure 3 The upper center shows a schematic diagram of inkjet printing on a substrate. Figure 3 The lower center shows the optical signals corresponding to each preset region. It can be seen that, using the optical signal of the first ink droplet on the left as the reference signal, the ink droplet corresponding to the second preset region on the left is not completely within that preset region, and the peak intensity of its optical signal changes significantly more than the reference signal, exceeding the preset threshold. The judgment signals corresponding to other preset regions have smaller rates of change relative to the reference signal, below the preset threshold. This nozzle processing method can quickly determine the target nozzle.

[0108] Another embodiment of this application provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the above-described nozzle processing method and / or the above-described inkjet printing method.

[0109] Another embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described nozzle processing method and / or the above-described inkjet printing method.

[0110] It is understood that those skilled in the art will recognize 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 methods described above. Any references to memory, storage, databases, or other media used in the embodiments provided by this invention can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0111] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims, and the specification and drawings can be used to interpret the content of the claims.

Claims

1. A nozzle treatment method, characterized in that, Includes the following steps: A test substrate is provided, the surface of which has multiple predetermined areas; Multiple nozzles are provided for testing, and ink is supplied to the preset area through the nozzles to form multiple ink droplets; Acquire the optical signal of at least one of the ink droplets as a reference signal; The optical signals of each of the preset regions are acquired as judgment signals; The target nozzle is determined from the plurality of nozzles to be tested by comparing each of the judgment signals and the reference signal.

2. The nozzle treatment method according to claim 1, characterized in that, The ink includes luminescent materials.

3. The nozzle treatment method according to claim 2, characterized in that, The process of determining the target nozzle from the plurality of nozzles to be tested by comparing each of the judgment signals and the reference signal includes the following steps: When the rate of change of the judgment signal relative to the reference signal is less than or equal to a preset threshold, the nozzle corresponding to the preset region is judged to be a qualified nozzle; otherwise, the nozzle corresponding to the preset region is judged to be a non-qualified nozzle.

4. The nozzle treatment method according to claim 3, characterized in that, The reference signal includes the peak intensity of the optical signal of any ink droplet on the test substrate; The judgment signal includes the peak intensity of the optical signal in each of the preset regions; The rate of change is the rate of change of the peak intensity of the judgment signal relative to the peak intensity of the reference signal.

5. The nozzle treatment method according to claim 3, characterized in that, The preset threshold is 0% to 5%.

6. The nozzle treatment method according to any one of claims 2 to 5, characterized in that, Acquiring the optical signal of at least one of the ink droplets as a reference signal includes: At least one ink droplet on the test substrate is irradiated by an excitation light source to cause the ink droplet to emit a first excitation signal, and the first excitation signal is used as a reference signal. Acquiring the optical signals of each of the preset regions as judgment signals includes: The preset area is illuminated by the excitation light source, causing the preset area to emit a second excitation signal, which is then used as a judgment signal.

7. The nozzle treatment method according to claim 6, characterized in that, The test substrate includes a light-transmitting substrate; and / or, the excitation light source includes an ultraviolet light source.

8. The nozzle treatment method according to claim 7, characterized in that, The light transmittance of the light-transmitting substrate is ≥80%; and / or the emission wavelength of the excitation light source is λ, where 280nm≤λ<400nm.

9. The nozzle treatment method according to any one of claims 7 to 8, characterized in that, The light-transmitting substrate includes a hydrophobic light-transmitting substrate; and / or, The luminescent material includes at least one of organic luminescent materials and quantum dot luminescent materials; and / or, Multiple preset regions are distributed in a dot matrix on the surface of the test substrate.

10. The nozzle treatment method according to any one of claims 1-5 and 7-8, characterized in that, After comparing the various judgment signals to determine the target nozzle from the plurality of nozzles to be tested, the method further includes the following steps: Print using the target nozzle.

11. A nozzle treatment system, characterized in that, It includes a control module, a reference signal acquisition module, a judgment signal acquisition module, and a signal judgment module; It also includes a test substrate, the surface of which has multiple preset areas; each preset area carries multiple ink droplets, which are formed by ink supplied by the nozzle under test. The control module is used to control the target nozzle to print; The reference signal acquisition module is used to acquire the optical signal of at least one ink droplet as a reference signal; The judgment signal acquisition module is used to acquire the optical signal of each preset area as a judgment signal; The signal judgment module is used to compare each judgment signal with the reference signal to determine the target nozzle from the plurality of nozzles to be tested.

12. A nozzle treatment device, characterized in that, It includes a test substrate and a controller, wherein the surface of the test substrate has multiple preset areas; The controller is used to control multiple nozzles to supply ink to the preset area to form multiple ink droplets; The controller is also used to acquire the optical signals of each of the preset areas as a judgment signal; The controller is also used to acquire the optical signal of at least one of the ink droplets as a reference signal; The controller is also used to compare each of the judgment signals and the reference signal to determine the target nozzle from the plurality of nozzles to be tested.

13. The nozzle treatment apparatus according to claim 12, characterized in that, The nozzle processing device further includes: a transfer device, an excitation light source, and a detection device, wherein the transfer device, the excitation light source, and the detection device are all electrically connected to the controller; The transfer device is used to transfer the test substrate; The excitation light source is used to illuminate the preset area to cause the preset area to emit a second excitation signal; The detection device is used to receive the second excitation signal; The detection device and the excitation light source are located on opposite sides of the test substrate; and / or The test substrate includes a light-transmitting substrate.

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