Printing method and device for backlight panel reflective layer

Abstract

The embodiment of the present application provides a method and device for printing a reflective layer of a backlight panel, the method includes: performing a first correction process for at least two piezoelectric injectors; obtaining the specification parameters of a backlight panel; generating a movement path of the piezoelectric injector according to the specification parameters of the backlight panel; and controlling and printing the corrected piezoelectric injector according to the movement path. By controlling the piezoelectric injector to print the reflective layer, the thickness of the reflective layer can be changed steplessly, and the method can be carried out before and after the die bonding process, which is more flexible than traditional screen printing; at the same time, it can not only effectively avoid the impact on the tin plating accuracy of the backlight panel, but also avoid the phenomenon of warping after the reflective layer is cured, so as to further ensure the manufacturing accuracy of the reflective layer.

Description

[Technical field]

[0001] The present application is in the field of semiconductor processing technology, and in particular, relates to a method and apparatus for printing a backlight panel reflective layer. [Background technology]

[0002] With the popularization of semiconductor technology, the processing precision of semiconductors is becoming more and more advanced. Generally, in order to improve the reflection efficiency of a semiconductor backlight panel, a backlight panel reflective layer can be provided on the circuit of the backlight panel.

[0003] In the prior art, the reflective layer can be coated on the backlight panel by a screen method, and the pattern is made according to the specific distribution pattern of the backlight panel. However, in the actual printing process, the screen process needs to be completed before the die bonding process of the backlight panel, and this method is very likely to affect the tin plating accuracy of the backlight panel. Meanwhile, the backlight panel by the screen is easily warped, which brings great difficulties to the accuracy required in the post-process of the backlight panel.

[0004] Secondly, in the printing process, the height of a single ink print on the screen cannot meet the high reflectance required for the reflective layer of the backlight panel, so the number of prints must be increased to obtain the required reflective layer height. Also, because screen printing uses ink materials that have an overflow phenomenon, if the printing thickness is too large, it is likely to cause poor opening accuracy and poor appearance around the periphery of the backlight panel. Summary of the Invention [Problem to be solved by the invention]

[0005] In summary, the printing process for the reflective layer of the conventional backlight panel has low precision, which is likely to affect the precision of the subsequent processes, resulting in high printing costs and affecting user satisfaction with the printed reflective layer. [Means for solving the problem]

[0006] In order to solve the above problem that the printing process has low precision and is easy to affect the precision of the post-process, resulting in high printing costs, the present application provides a method and device for printing the reflective layer of a backlight panel, which controls the piezoelectric injection valve to print the reflective layer and change the thickness of the reflective layer steplessly, which not only effectively avoids the impact on the tin plating precision of the backlight panel, but also avoids phenomena such as warping of the reflective layer after curing, and further ensures the production precision of the reflective layer. The technical solutions are as follows:

[0007] In a first aspect, the present application provides a method for printing a backlight panel reflective layer, the method comprising: performing a first correction process on at least two piezoelectric injectors; Obtaining specification parameters of a backlight panel, and generating movement paths of at least two piezoelectric injectors according to the specification parameters of the backlight panel; and controlling and printing at least two corrected piezoelectric injectors according to a movement path.

[0008] In any one of the solving means of the first aspect, the execution of the first correction process for the at least two piezoelectric injectors includes: The method includes obtaining a distance between the at least two piezoelectric injectors and the backlight panel based on the contact sensor, and controlling the distance between the at least two piezoelectric injectors and the backlight panel to be a predetermined distance.

[0009] In yet another optional solution of the first aspect, performing the first correction process on the at least two piezoelectric injectors further includes: Obtaining nozzle shapes of the at least two piezoelectric injectors based on a first camera, and determining a distance between any two adjacent piezoelectric injectors of the at least two piezoelectric injectors based on the nozzle shapes, where the first camera is disposed under the at least two piezoelectric injectors; and adjusting the distance between any two adjacent piezoelectric injectors according to a predetermined distance.

[0010] In a further optional solution of the first aspect, performing the first correction process on the at least two piezoelectric injectors further includes: Controlling any one of the at least two piezoelectric injectors to print a calibration point in a predetermined area; identifying calibration points based on a second camera and determining initial positions of the piezoelectric injectors corresponding to the calibration points, where the second camera is disposed above the at least two piezoelectric injectors; and determining an initial position of each of the at least two piezoelectric injectors based on the adjusted distance between any two adjacent piezoelectric injectors and the initial position of the piezoelectric injector corresponding to the calibration point.

[0011] In a further optional solution of the first aspect, the at least two piezoelectric injectors comprise at least two large nozzle piezoelectric injectors and at least two small nozzle piezoelectric injectors.

[0012] The execution of the first correction process for the at least two piezoelectric injectors further includes: Obtaining an adhesion quality of each large nozzle piezoelectric injector at the same time interval, and determining whether the adhesion quality of each large nozzle piezoelectric injector is consistent with a predetermined first quality; When it is detected that the adhesive quality of the large nozzle piezoelectric injector does not match the predetermined first quality, adjusting the valve air pressure of the large nozzle piezoelectric injector until the adhesive quality of the large nozzle piezoelectric injector matches the predetermined first quality; Obtaining an adhesion quality of each small nozzle piezoelectric injector at the same time interval, and determining whether the adhesion quality of each small nozzle piezoelectric injector is consistent with a predetermined second quality; When it is detected that the adhesion quality of the small-nozzle piezoelectric injector does not match a predetermined second quality, adjusting the valve air pressure of the small-nozzle piezoelectric injector until the adhesion quality of the small-nozzle piezoelectric injector matches the predetermined second quality.

[0013] In a further optional solution of the first aspect, performing the first correction process on the at least two piezoelectric injectors further includes: The method includes performing a preheating process on the at least two piezoelectric injectors such that nozzle temperatures of the at least two piezoelectric injectors are within a predetermined temperature range.

[0014] In a further optional solution of the first aspect, before controlling the at least two piezoelectric injectors that have been corrected to print according to the movement path, further Blending a diluent of a first predetermined concentration with a leveling agent of a second predetermined concentration to obtain a printing material for the at least two piezoelectric injectors.

[0015] Controlling at least two corrected piezoelectric injection valves to print according to the movement path, The method includes filling the at least two compensated piezoelectric injectors with a printing material, and controlling the at least two compensated piezoelectric injectors to print according to a moving path.

[0016] In yet another optional solution of the first aspect, before controlling and printing at least two corrected piezoelectric injectors according to the movement path, further This includes cleaning the surface of the backlight panel.

[0017] In yet another optional solution of the first aspect, after performing a first correction process on the at least two piezoelectric injectors, obtaining specification parameters of the backlight panel, and before generating movement paths of the at least two piezoelectric injectors based on the specification parameters of the backlight panel, further: Identifying marking points of the backlight panel based on the second camera, where the number of marking points of the backlight panel is at least two; Determining whether a connecting line formed by connecting the marking points of any two adjacent backlight panels is parallel to a calibration line set on a substrate, where the substrate is used to support the backlight panels; when it is determined that the connecting line formed by connecting the marking points of any two adjacent backlight panels is not parallel to the calibration line set on the substrate, performing a second correction process on the backlight panel until the connecting line formed by connecting the marking points of any two adjacent backlight panels becomes parallel to the calibration line set on the substrate; The method includes determining a printing position of a piezoelectric injector corresponding to a calibration point based on the marking points of the corrected backlight panel, and calculating a printing position of each of the at least two piezoelectric injectors based on the printing position of the piezoelectric injector corresponding to the calibration point and an initial position of the piezoelectric injector corresponding to the calibration point.

[0018] In a further optional solution of the first aspect, the backlight panel comprises at least two light emitting diodes.

[0019] Obtaining a specification parameter of the backlight panel; and generating a movement path of at least two piezoelectric injectors based on the specification parameter of the backlight panel. Obtaining a surface size of a backlight panel, a size of each light emitting diode, and a position of each light emitting diode on the backlight panel; Determining a first printing area and a second printing area of ​​the at least two piezoelectric injectors according to a surface size of the backlight panel, where the first printing area does not include any light emitting diodes, the at least two piezoelectric injectors are in an on state in the first printing area, and the second printing area includes all the light emitting diodes; determining positions where at least two piezoelectric injectors in the second printing area are in an on state and an off state based on a size of each light emitting diode and a position of each light emitting diode on the backlight panel; and generating movement paths for the at least two piezoelectric injectors based on respective printing positions of the at least two piezoelectric injectors, the first printing area, and positions where the at least two piezoelectric injectors are in an on state and an off state within the second printing area.

[0020] In yet another optional solution of the first aspect, before controlling the at least two piezoelectric injectors that have been corrected to print according to the movement path, further The method includes determining a printing height of the at least two piezoelectric injectors based on a surface size of the backlight panel, and adjusting a distance between the at least two piezoelectric injectors and the substrate based on the printing height of the at least two piezoelectric injectors.

[0021] In a further optional solution of the first aspect, after controlling the at least two piezoelectric injectors that have been corrected to print according to the movement path, and curing the reflective layer of the printed backlight panel.

[0022] In yet another optional solution of the first aspect, after controlling at least two piezoelectric injectors that have been corrected to print according to the movement path, The method includes moving at least two piezoelectric injectors to a cleaning area and performing a cleaning process on each piezoelectric injector.

[0023] In a further optional solution of the first aspect, the method is carried out before a die bonding process of the backlight panel, or The method is carried out after the die bonding process of the backlight panel.

[0024] In a second aspect, the present application provides a printing device for a backlight panel reflective layer, comprising: a first processing module configured to perform a first correction process on the at least two piezoelectric injectors; A generating module configured to obtain specification parameters of a backlight panel, and generate movement paths of at least two piezoelectric injectors according to the specification parameters of the backlight panel; and a printing module configured to control and print the at least two corrected piezoelectric injectors according to a moving path.

[0025] In any solution according to the second aspect, the first processing module comprises: The device includes a first control unit that acquires distances between the at least two piezoelectric injection valves and the backlight panel based on the contact sensor, and controls the distances between the at least two piezoelectric injection valves and the backlight panel to be a predetermined distance.

[0026] In a further optional solution of the second aspect, the first processing module further comprises: A first acquisition unit configured to acquire nozzle shapes of the at least two piezoelectric injectors based on a first camera, and determine a distance between any two adjacent piezoelectric injectors of the at least two piezoelectric injectors based on the nozzle shapes, where the first camera is disposed under the at least two piezoelectric injectors;

[0027] and a second control unit configured to adjust the distance between any two adjacent piezoelectric injectors according to a predetermined distance.

[0028] In a further optional solution of the second aspect, the first processing module further comprises: a printing unit configured to control any one of the at least two piezoelectric injectors to print calibration points in a predetermined area; an identification unit configured to identify calibration points based on the second camera and determine initial positions of the piezoelectric injectors corresponding to the calibration points, where the second camera is provided above the at least two piezoelectric injectors; and a third control unit configured to determine an initial position of each of the at least two piezoelectric injectors based on the adjusted distance between any two adjacent piezoelectric injectors and the initial position of the piezoelectric injector corresponding to the calibration point.

[0029] In a further optional solution of the second aspect, the at least two piezoelectric injectors comprise at least two large nozzle piezoelectric injectors and at least two small nozzle piezoelectric injectors.

[0030] The first processing module further comprises: a second acquisition unit configured to acquire an adhesion quality of each large nozzle piezoelectric injector at the same time interval, and determine whether the adhesion quality of each large nozzle piezoelectric injector is consistent with a predetermined first quality; a fourth control unit configured to adjust a valve air pressure of the large nozzle piezoelectric injector when it is detected that the adhesion quality of the large nozzle piezoelectric injector does not match a predetermined first quality until the adhesion quality of the large nozzle piezoelectric injector matches the predetermined first quality; a third acquisition unit configured to acquire an adhesion quality of each small-nozzle piezoelectric injector at the same time distance and determine whether the adhesion quality of each small-nozzle piezoelectric injector is consistent with a predetermined second quality; and a fifth control unit configured to adjust the valve air pressure of the small-nozzle piezoelectric injector when it is detected that the adhesion quality of the small-nozzle piezoelectric injector does not match a predetermined second quality until the adhesion quality of the small-nozzle piezoelectric injector matches the predetermined second quality.

[0031] In a further optional solution of the second aspect, the first processing module further comprises: The heating unit is configured to perform a pre-heating process on the at least two piezoelectric injectors such that the nozzle temperatures of the at least two piezoelectric injectors are in a predetermined temperature range.

[0032] In a further optional solution of the second aspect, the apparatus further comprises: The printing device further includes a blending module configured to blend a diluent having a first predetermined concentration with a leveling agent having a second predetermined concentration to obtain a printing material for the at least two piezoelectric injectors before controlling the at least two corrected piezoelectric injectors to print according to the moving path.

[0033] The printing module is specifically used for filling at least two compensated piezoelectric injection valves with printing material, and controlling the at least two compensated piezoelectric injection valves to print according to a moving path.

[0034] In a further optional solution of the second aspect, the apparatus further comprises: A first cleaning module is configured to clean a surface of the backlight panel before controlling the at least two compensated piezoelectric injectors according to a moving path for printing.

[0035] In a further optional solution of the second aspect, the apparatus further comprises: an identification module configured to obtain specification parameters of the backlight panel after performing a first correction process on the at least two piezoelectric injectors, and identify marking points of the backlight panel based on a second camera before generating movement paths of the at least two piezoelectric injectors based on the specification parameters of the backlight panel, where the number of marking points of the backlight panel is at least two; A determining module configured to determine whether a connecting line formed by connecting the marking points of any two adjacent backlight panels is parallel to a calibration line set on a substrate, where the substrate is used to support the backlight panels; a second processing module configured to perform a second correction process on the backlight panel when it is determined that a connecting line formed by connecting the marking points of any two adjacent backlight panels is not parallel to the calibration line set on the substrate, until the connecting line formed by connecting the marking points of any two adjacent backlight panels becomes parallel to the calibration line set on the substrate; The system further comprises a calculation module configured to determine printing positions of the piezoelectric injectors corresponding to the calibration points based on the marking points of the corrected backlight panel, and to calculate printing positions of each of the at least two piezoelectric injectors based on the printing positions of the piezoelectric injectors corresponding to the calibration points and the initial positions of the piezoelectric injectors corresponding to the calibration points.

[0036] In a further optional solution of the second aspect, the backlight panel comprises at least two light emitting diodes.

[0037] The generation module is A fourth acquisition unit configured to acquire a surface size of the backlight panel, a size of each light emitting diode, and a position of each light emitting diode on the backlight panel; A dividing unit configured to determine a first printing area and a second printing area of ​​the at least two piezoelectric injectors based on a surface size of the backlight panel, where the first printing area does not include the light emitting diodes, the at least two piezoelectric injectors are in an on state in the first printing area, and the second printing area includes all the light emitting diodes; a processing unit configured to determine locations of at least two piezoelectric injection valves in the second printing area in an on state and an off state based on a size of each light emitting diode and a location of each light emitting diode on the backlight panel; and a generating unit configured to generate movement paths for the at least two piezoelectric injectors based on respective printing positions of the at least two piezoelectric injectors, a first printing area, and positions where the at least two piezoelectric injectors are in an on state and an off state within a second printing area.

[0038] In yet another optional solution of the second aspect, the apparatus further comprises: Before controlling the at least two corrected piezoelectric injectors to print according to the movement path, the method further includes a first adjustment module configured to determine a printing height of the at least two piezoelectric injectors based on a surface size of the backlight panel, and adjust a distance between the at least two piezoelectric injectors and the substrate based on the printing height of the at least two piezoelectric injectors.

[0039] In a further optional solution of the second aspect, the apparatus further comprises: A curing module is configured to control the compensated at least two piezoelectric injectors to print according to the moving path, and then cure the printed reflective layer of the backlight panel.

[0040] In a further optional solution of the second aspect, the apparatus further comprises: A second cleaning module is provided, which is configured to control the at least two piezoelectric injectors that have been subjected to the correction process to print according to the movement path, and then move the at least two piezoelectric injectors to a cleaning area and perform a cleaning process on each piezoelectric injector.

[0041] In a further optional solution of the second aspect, the method is carried out before a die bonding process of the backlight panel, or The method is carried out after the die bonding process of the backlight panel.

[0042] In a third aspect, the present application also provides a printing apparatus for a backlight panel reflective layer, which includes a processor and a memory.

[0043] The processor is coupled to the memory; The memory is used to store executable program code.

[0044] The processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, thereby performing the backlight panel reflective layer printing method provided by the first aspect or any implementation of the first aspect in the embodiments of the present application.

[0045] In a fourth aspect, the present application provides a computer storage medium having a computer program stored thereon, the computer program including program instructions that, when executed by a processor, can perform the method for printing a backlight panel reflective layer provided by the first aspect or any implementation of the first aspect in the embodiments of the present application. Effect of the Invention

[0046] First, a first correction process is carried out for at least two piezoelectric injectors, and then the specification parameters of the backlight panel are obtained, and the movement path of the piezoelectric injector is generated according to the specification parameters of the backlight panel, and the corrected piezoelectric injector is controlled and printed according to the movement path. By controlling the piezoelectric injector to print the reflective layer, the thickness of the reflective layer can be changed steplessly, and the method can be carried out before and after the die bonding process, which is more flexible than traditional screen printing, and at the same time, it can effectively avoid the influence on the tin plating accuracy of the backlight panel, and also avoid the phenomenon of warping after the reflective layer is hardened, so as to further ensure the manufacturing accuracy of the reflective layer. [Brief description of the drawings]

[0047] In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly describe the accompanying drawings used in the embodiments. However, the accompanying drawings in the following description are only part of the embodiments of the present application, and those skilled in the art can also obtain other drawings based on these drawings without creative efforts. [Figure 1] 1 is a schematic flow chart of a method for printing a backlight panel reflective layer provided by an embodiment of the present application. [Diagram 2] FIG. 2 is a schematic diagram of a top surface structure of a motor module provided by an embodiment of the present application. [Diagram 3] 1 is a schematic diagram of the printing effect of at least two piezoelectric injectors provided by an embodiment of the present application; [Figure 4] FIG. 2 is a schematic diagram of a process for printing a reflective layer of a backlight panel provided by an embodiment of the present application. [Figure 5a] 2 is a schematic diagram of the triggering states of at least two piezoelectric injectors provided by an embodiment of the present application; FIG. [Figure 5b] 2 is a schematic diagram of the triggering states of at least two piezoelectric injectors provided by an embodiment of the present application; FIG. [Figure 6] FIG. 2 is a schematic plan view of a backlight panel provided by an embodiment of the present application. [Figure 7] 4 is a schematic diagram of flow rate change curves of at least two piezoelectric injectors provided by embodiments of the present application; FIG. [Figure 8] 11A-11C are schematic diagrams of printing effects of at least two other piezoelectric injectors provided by embodiments of the present application. [Figure 9] 11A-11C are schematic diagrams of printing effects of at least two other piezoelectric injectors provided by embodiments of the present application. [Figure 10] FIG. 2 is a structural schematic diagram of an apparatus for printing a reflective layer of a backlight panel provided by an embodiment of the present application. [Figure 11] FIG. 2 is a structural schematic diagram of an apparatus for printing the reflective layer of another backlight panel provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0048] The technical solutions in the embodiments of the present application are described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application.

[0049] In the following description, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. The following description provides multiple examples of the present application, and since different examples can be substituted or combined, the present application can also be considered to include all possible combinations of the same and / or different examples described. Thus, if one example includes features A, B, and C, and another example includes features B and D, the present application should also be considered to include examples including one or more of all other possible combinations of A, B, C, and D, even if such examples may not be explicitly documented in the following content.

[0050] The following description provides examples and is not intended to limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of the elements described without departing from the scope of the subject matter of this application. In each embodiment, various procedures or components may be omitted, substituted, or added as appropriate. For example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some embodiments may be combined with other embodiments.

[0051] Referring to FIG. 1, FIG. 1 shows a schematic flow chart of a method for printing a backlight panel reflective layer provided by an embodiment of the present application.

[0052] As shown in FIG. 1, the printing method for the backlight panel reflective layer may include at least the following steps: Step 102, a first correction process is performed for at least two piezoelectric injectors.

[0053] Specifically, after the die bonding process of the backlight panel is completed, when printing the reflective layer of the backlight panel, the number and corresponding arrangement positions of at least two piezoelectric injectors for printing the reflective layer may be determined, and a first correction process may be performed on the at least two piezoelectric injectors, where the types of the at least two piezoelectric injectors include, but are not limited to, a large nozzle piezoelectric injector and a small nozzle piezoelectric injector, and the area of ​​the reflective layer printed by the large nozzle piezoelectric injector is larger than the area of ​​the reflective layer printed by the small nozzle piezoelectric injector. It should be understood that the reflective layer of the backlight panel can be printed by at least two large nozzle piezoelectric injection valves and at least two small nozzle piezoelectric injection valves, and the at least two large nozzle piezoelectric injection valves can be arranged in parallel, and the distance between each of the two adjacent large nozzle piezoelectric injection valves can be adjusted arbitrarily, and the at least two small nozzle piezoelectric injection valves can be arranged in parallel, and the distance between each of the two adjacent small nozzle piezoelectric injection valves can also be adjusted arbitrarily, and the distance from each of the large nozzle piezoelectric injection valves to the backlight panel is different from the distance from each of the small nozzle piezoelectric injection valves to the backlight panel. Of course, the at least two piezoelectric injection valves in this embodiment can be the same type of piezoelectric injection valves, such as at least two large nozzle piezoelectric injection valves or at least two small nozzle piezoelectric injection valves, but are not limited thereto.

[0054] In the embodiment of the present application, the printing method of the reflective layer of the backlight panel may be performed before the die bonding process of the backlight panel or after the die bonding process of the backlight panel, but is not limited thereto, and it is more flexible than the conventional screen printing, and can avoid the phenomenon of warping after the reflective layer is cured. Note that the die bonding process here is a conventional technical means in the technical field, so a detailed description is omitted here.

[0055] Here, reference may be made to the schematic diagram of the top structure of the motor module provided by the embodiment of the present application shown in FIG. 2. As shown in FIG. 2, the motor module may be provided on the backlight panel, and may include, but is not limited to, a gantry, a small nozzle piezoelectric valve module and a large nozzle piezoelectric valve module provided on both sides of the gantry, respectively. Here, the small nozzle piezoelectric valve module is controlled by a motor on one side of the gantry to move back and forth in the horizontal direction, and the small nozzle piezoelectric valve module may include, but is not limited to, seven small nozzle piezoelectric injectors, and the distance between each two adjacent small nozzle piezoelectric injectors is the same. The large nozzle piezoelectric valve module is controlled by a motor on the other side of the gantry to move back and forth in the horizontal direction, and the large nozzle piezoelectric valve module may include, but is not limited to, seven large nozzle piezoelectric injectors, and the distance between each two adjacent large nozzle piezoelectric injectors is the same. It should be understood that each small nozzle piezoelectric injector and each large nozzle piezoelectric injector can be individually controlled, and the position can be arbitrarily adjusted according to the size of the backlight panel. It is noted that the small nozzle piezoelectric valve module and the large nozzle piezoelectric valve module on the motor module shown in FIG. 2 may be arranged offset vertically, which not only allows the distance from the small nozzle piezoelectric valve module to the backlight panel and the distance from the large nozzle piezoelectric valve module to the backlight panel to be controlled, but also makes it easy to install more small nozzle piezoelectric injectors on the small nozzle piezoelectric valve module and more large nozzle piezoelectric injectors on the large nozzle piezoelectric valve module.

[0056] Furthermore, after determining the number and corresponding arrangement positions of the at least two piezoelectric injectors, the distance between the at least two piezoelectric injectors and the backlight panel can be obtained based on a contact sensor, and the distance between the at least two piezoelectric injectors and the backlight panel can be controlled to be a predetermined distance.

[0057] Specifically, the nozzle of each of the at least two piezoelectric injectors can be controlled to move directly above the contact sensor first, and then the nozzle of each of the piezoelectric injectors can be controlled to contact the contact sensor until the contact sensor obtains an electrical signal corresponding to the contact. The contact sensor may be provided at a height where the distance between the contact sensor and the backlight panel is a predetermined distance, but is not limited thereto, and it should be understood that the corresponding height can be automatically adjusted when the predetermined distance is changed. The corresponding electrical signal of each of the nozzles of the at least two piezoelectric injectors can be controlled to be the same after contacting the contact sensor, so as to keep the distance between each of the at least two piezoelectric injectors and the backlight panel the same, and further ensure the accuracy of the printed reflective layer. Of course, when the at least two piezoelectric injectors include multiple types of piezoelectric injectors, the distance between each type of piezoelectric injector and the backlight panel can be controlled to be the same.

[0058] Step 104: obtain specification parameters of a backlight panel, and generate movement paths of at least two piezoelectric injectors according to the specification parameters of the backlight panel.

[0059] Specifically, after performing a first correction process on at least two piezoelectric injectors, the surface size of the backlight panel, the size of each light-emitting diode, and the position of each light-emitting diode on the backlight panel can be obtained. Here, the backlight panel can include at least two light-emitting diodes, and the at least two light-emitting diodes are arranged symmetrically. The surface size of the backlight panel can be the length and width of the backlight panel, the size of each light-emitting diode can be the length and width of the light-emitting diode, and the position of each light-emitting diode on the backlight panel is respectively used as the corresponding coordinates of the four vertices of each light-emitting diode in a plane rectangular coordinate system established by taking a certain vertex of the backlight panel as the coordinate origin and taking two adjacent sides as the x-axis and y-axis, respectively, but is not limited thereto, and it is understood that the distance between any two adjacent light-emitting diodes can be determined.

[0060] Of course, the distribution of the at least two light emitting diodes on the backlight panel in the embodiments of the present application may be, but is not limited to, asymmetric.

[0061] In addition, the first printing area and the second printing area of ​​the at least two piezoelectric injectors can be determined according to the surface size of the backlight panel. Here, the first printing area may be, but is not limited to, an area that does not include light-emitting diodes, and the at least two piezoelectric injectors need to be in a continuous on state in the first printing area, that is, the at least two piezoelectric injectors print the reflective layer without interruption in the first printing area. The second printing area may be, but is not limited to, an area that includes all light-emitting diodes, and in the second printing area, the at least two piezoelectric injectors need to be in an off state when passing directly above each light-emitting diode, and in an on state when leaving directly above each light-emitting diode, so as to avoid printing the reflective layer on the surface of each light-emitting diode to affect the light-emitting effect of the backlight panel. In order to better distinguish the first printing area from the second printing area, it should be understood that the second printing area may be set to include all the areas of all the light-emitting diodes and the area between any two adjacent light-emitting diodes, and the first printing area may be the entire area of ​​the surface area of ​​the backlight panel except the second printing area.

[0062] Furthermore, the positions at which the at least two piezoelectric injectors are in the on state and the off state within the second print area are determined based on the size of each light emitting diode and the position of each light emitting diode on the backlight panel.

[0063] Here, we can refer to the schematic diagram of the printing effect of two piezoelectric injectors provided by the embodiment of the present application shown in FIG. 3. As shown in FIG. 3, taking at least two types of piezoelectric injectors, which may include a large nozzle piezoelectric injector and a small nozzle piezoelectric injector, as an example, when printing in the second printing area, the large nozzle piezoelectric injector can be first controlled to be in an on state, the small nozzle piezoelectric injector can be controlled to be in an off state, and then moved in a negative direction along the Y axis of the plane from the upper end of the backlight panel. When moving to the upper end of the light-emitting diode, the large nozzle piezoelectric injector can be controlled to be in an off state, the small nozzle piezoelectric injector can be controlled to be in an on state, and then moved in a negative direction along the Y axis of the plane. When continuing to move to the lower end of the light-emitting diode, the large nozzle piezoelectric injector can be controlled to be in an on state, the small nozzle piezoelectric injector can be controlled to be in an off state, and then moved in a negative direction along the Y axis of the plane until moving to the lower end of the backlight panel, and both the large nozzle piezoelectric injector and the small nozzle piezoelectric injector can be controlled to be in an off state.

[0064] In addition, in an embodiment of the present application, after the on-state positions and off-state positions of the at least two piezoelectric injectors in the second printing area are determined, information corresponding to the on-state positions and off-state positions of the at least two piezoelectric injectors in the second printing area is pre-recorded in an encoder, so that during the process of printing the reflective layer, the operating states of the at least two piezoelectric injectors can be accurately controlled according to the positions of the at least two piezoelectric injectors, and delays are reduced.

[0065] It should be understood that in FIG. 3 above, the shape sprayed by the large-nozzle piezoelectric injector may be a circle with a large diameter (which becomes elliptical due to slight deformation during the printing process), and the shape sprayed by the small-nozzle piezoelectric injector may be a circle with a small diameter (which becomes elliptical due to slight deformation during the printing process), and the present application is not limited to this.

[0066] Further, a movement path of the at least two piezoelectric injectors can be generated based on a first printing area of ​​the at least two piezoelectric injectors and positions where the at least two piezoelectric injectors in the second printing area are in an on state and an off state.

[0067] When the at least two types of piezoelectric injectors include a large nozzle piezoelectric injector and a small nozzle piezoelectric injector, when printing a reflective layer in the first printing area, the large nozzle piezoelectric injector can be controlled to always be on (the small nozzle piezoelectric injector can be controlled to be off), or the small nozzle piezoelectric injector can be controlled to always be on (the large nozzle piezoelectric injector can be controlled to be off), or at the same time, the large nozzle piezoelectric injector can be controlled to always be on and the small nozzle piezoelectric injector can be controlled to always be on, but is not limited to this.

[0068] Step 106: Control and print the at least two corrected piezoelectric injectors according to the moving path.

[0069] Here, we can refer to the schematic diagram of the process of printing the reflective layer of the backlight panel provided by the embodiment of the present application shown in Figure 4. As shown in Figure 4, take as an example that the at least two piezoelectric injectors are the same type of piezoelectric injectors, when printing the reflective layer of the backlight panel, first place the at least two piezoelectric injectors at the upper end of the backlight panel, and control the at least two piezoelectric injectors to accelerate along the Y-axis plane in the negative direction to move to the upper end of the backlight panel, during which each of the at least two piezoelectric injectors is in the OFF state. Then, control the at least two piezoelectric injectors to move along the Y-axis plane in the negative direction at a constant speed to the lower end of the backlight panel, during which each of the at least two piezoelectric injectors is in the ON state. Next, the at least two piezoelectric injectors can be controlled to decelerate and move along the Y-axis plane in the negative direction to below the lower end of the backlight panel (until the moving speed of the at least two piezoelectric injectors becomes 0), and move a predetermined distance along the X-axis plane in the negative direction, during which each of the at least two piezoelectric injectors is in the OFF state. Here, the predetermined distance can be determined according to the nozzle diameter of the at least two piezoelectric injectors or the number of injection material layers corresponding to the reflective layer, for example, currently, when controlling a large nozzle piezoelectric injector to print, it can be moved in the negative direction along the X-axis of the plane by the same distance as the nozzle diameter of the large nozzle piezoelectric injector, but is not limited thereto. Then, the at least two piezoelectric injectors can be controlled to accelerate in the positive direction along the Y-axis of the plane to move to the lower end of the backlight panel, while each of the at least two piezoelectric injectors is in an off state. Then, the at least two piezoelectric injectors can be controlled to move at a constant speed in the positive direction along the Y-axis of the plane to the upper end of the backlight panel, while each of the at least two piezoelectric injectors is in an on state. Then, the at least two piezoelectric injectors can be controlled to decelerate and move in the positive direction along the Y-axis of the plane to above the upper end of the backlight panel (until the moving speed of the at least two piezoelectric injectors becomes 0), and move a predetermined distance in the negative direction along the X-axis, while each of the at least two piezoelectric injectors is in an off state.

[0070] At this time, the at least two piezoelectric injectors can be controlled to repeat the above-mentioned movement path and corresponding state until the at least two piezoelectric injectors are controlled to move to the upper end of the backlight panel corresponding to the first light-emitting diode (i.e., corresponding to the dotted line printing area). Next, the at least two piezoelectric injectors are first controlled to move along the Y-axis plane at a constant speed in the negative direction to position 1 (which can also be understood as the upper end of the first light-emitting diode), and at this time, the at least two piezoelectric injectors are adjusted from an on state to an off state, and the at least two piezoelectric injectors are continuously controlled to move along the Y-axis plane at a constant speed in the negative direction. When the at least two piezoelectric injectors move along the Y-axis plane at a constant speed in the negative direction to position 2 (which can also be understood as the lower end of the first light-emitting diode), the at least two piezoelectric injectors are adjusted from an off state to an on state, and the at least two piezoelectric injectors are continuously controlled to move along the Y-axis plane at a constant speed in the negative direction. When the at least two piezoelectric injectors move at a constant speed in the negative direction along the Y axis of the plane to position 3 (which can also be understood as the upper end of the second light-emitting diode), the at least two piezoelectric injectors are adjusted from an on state to an off state, and the at least two piezoelectric injectors continue to be controlled to move at a constant speed in the negative direction along the Y axis of the plane.When the at least two piezoelectric injectors move at a constant speed in the negative direction along the Y axis of the plane to position 4 (which can also be understood as the lower end of the second light-emitting diode), the at least two piezoelectric injectors are adjusted from an off state to an on state, and the at least two piezoelectric injectors continue to be controlled to move at a constant speed in the negative direction along the Y axis of the plane. When the at least two piezoelectric injectors move at a constant speed in the negative direction along the Y axis of the plane to position 5 (which can also be understood as the upper end of the third light-emitting diode), the at least two piezoelectric injectors are adjusted from an on state to an off state, and the at least two piezoelectric injectors can be continued to be controlled to move at a constant speed in the negative direction along the Y axis of the plane, and controlled to repeat the above movement path and corresponding state until the entire reflective layer of the backlight panel is printed.

[0071] Here, we can refer to the schematic diagram of the trigger state of at least two piezoelectric injectors provided by the embodiment of the present application shown in Figure 5. As shown in the upper part of Figure 5, when the at least two piezoelectric injectors are in position 1, i.e., when the corresponding pulse signal is about to be converted from low level to high level, the at least two piezoelectric injectors can be controlled to be adjusted from on state to off state. When the at least two piezoelectric injectors are in position 2, i.e., when the corresponding pulse signal is first converted from high level to low level and then converted from low level to high level, the at least two piezoelectric injectors can be controlled to be adjusted from off state to on state. When the at least two piezoelectric injectors are in position 3, i.e., when the corresponding pulse signal is first converted from high level to low level and then converted from low level to high level, the at least two piezoelectric injectors can be controlled to be adjusted from on state to off state. When the at least two piezoelectric injectors are in position 4, i.e., when the corresponding pulse signals are first changed from high level to low level and then about to change from low level to high level, the at least two piezoelectric injectors can be controlled to adjust from off state to on state. When the at least two piezoelectric injectors are in position 5, i.e., when the corresponding pulse signals are first changed from high level to low level and then about to change from low level to high level, the at least two piezoelectric injectors can be controlled to adjust from on state to off state, and the above operations are repeated in sequence.

[0072] Alternatively, as shown in the lower part of Fig. 5, when the at least two piezoelectric injectors are in position 1, i.e., when the corresponding pulse signals are first converted from a low level to a high level and then are about to be converted from a high level to a low level, the at least two piezoelectric injectors can be controlled to be adjusted from an on state to an off state. When the at least two piezoelectric injectors are in position 2, i.e., when the corresponding pulse signals are first converted from a high level to a low level and then are about to be converted from a low level to a high level, the at least two piezoelectric injectors can be controlled to be adjusted from an off state to an on state. When the at least two piezoelectric injectors are in position 3, i.e., when the corresponding pulse signals are first converted from a low level to a high level and then are about to be converted from a high level to a low level, the at least two piezoelectric injectors can be controlled to be adjusted from an on state to an off state. When the at least two piezoelectric injectors are in position 4, i.e., when the corresponding pulse signals are first converted from a high level to a low level and then are about to be converted from a low level to a high level, the at least two piezoelectric injectors can be controlled to be adjusted from an off state to an on state. When the at least two piezoelectric injectors are in position 5, i.e., when the corresponding pulse signals are firstly changed from a low level to a high level and then about to be changed from a high level to a low level, the at least two piezoelectric injectors can be controlled to be adjusted from an on state to an off state. When the at least two piezoelectric injectors are in position 6, i.e., when the corresponding pulse signals are firstly changed from a high level to a low level and then about to be changed from a low level to a high level, the at least two piezoelectric injectors can be controlled to be adjusted from an off state to an on state, and the above operations are repeated in sequence.

[0073] It is understood that embodiments of the present application are not limited to the triggering method of the at least two piezoelectric injectors shown in FIG. 6, and will not be described in detail herein.

[0074] In an optional embodiment of the present application, performing a first correction process on the at least two piezoelectric injectors further includes: Obtaining nozzle shapes of the at least two piezoelectric injectors based on a first camera, and determining a distance between any two adjacent piezoelectric injectors of the at least two piezoelectric injectors based on the nozzle shapes, where the first camera is disposed below the at least two piezoelectric injectors; and adjusting the distance between any two adjacent piezoelectric injectors according to a predetermined distance.

[0075] Specifically, each of the at least two piezoelectric injectors can be first controlled to move directly above a first camera, and then each of the piezoelectric injectors can be controlled to move vertically downward until the first camera can clearly identify the shape of the inner and outer circles of the nozzle of each of the piezoelectric injectors, and the distance between the nozzle centers of any two adjacent piezoelectric injectors can be determined by a vision algorithm.

[0076] Furthermore, the distance between the nozzle centers of any two adjacent piezoelectric injectors can be adjusted according to a predetermined distance, so that the distance between the nozzle centers of any two adjacent piezoelectric injectors meets a predetermined distance requirement. Here, the predetermined distance can be determined based on the size of the backlight panel of the printed reflective layer, but is not limited thereto, for example, the surface length of the backlight panel of the printed reflective layer can determine the predetermined distance between the nozzle centers of any two adjacent piezoelectric injectors in each row of the at least two piezoelectric injectors, and the surface width of the backlight panel of the printed reflective layer can determine the predetermined distance between the nozzle centers of any two adjacent piezoelectric injectors in each column of the at least two piezoelectric injectors.

[0077] It should be understood that the first camera may be a bottom inverted camera arranged under the at least two piezoelectric injectors, and the vision algorithm used may be a conventional technical means in the art and will not be described in detail in this application.

[0078] As a further optional embodiment of the present application, performing the first correction process on the at least two piezoelectric injectors further comprises: Controlling any one of the at least two piezoelectric injectors to print a calibration point in a predetermined area; identifying calibration points based on a second camera and determining initial positions of the piezoelectric injectors corresponding to the calibration points, where the second camera is disposed above the at least two piezoelectric injectors; and determining an initial position of each of the at least two piezoelectric injectors based on the adjusted distance between any two adjacent piezoelectric injectors and the initial position of the piezoelectric injector corresponding to the calibration point.

[0079] Specifically, after obtaining the nozzle shapes of the at least two piezoelectric injectors according to a first camera, and adjusting the distance between any two adjacent piezoelectric injectors according to a predetermined distance, in order to further ensure the accuracy of the at least two piezoelectric injectors, any one of the at least two piezoelectric injectors can be further controlled to print a calibration point within a predetermined area, where the predetermined area may be, but is not limited to, any area on a substrate, and the number of printed calibration points may be one or more.

[0080] Furthermore, the calibration point printed by any one of the piezoelectric injectors can be recognized based on a second camera, for example, but not limited to, the second camera can be controlled to move directly above the calibration point, and the initial position of the piezoelectric injector corresponding to the calibration point is determined by a vision algorithm, where the initial position may be understood as a coordinate corresponding to the calibration point in a planar Cartesian coordinate system, and the planar Cartesian coordinate system may be established based on a substrate, but is not limited to this.

[0081] Furthermore, after the initial position of the piezoelectric injector corresponding to the calibration point is determined, the distance between any two adjacent piezoelectric injectors is adjusted according to a predetermined distance, so that the initial position of each of the at least two piezoelectric injectors can be determined based on the initial position of the piezoelectric injector corresponding to the calibration point and the adjusted distance between any two adjacent piezoelectric injectors. For example, the initial position of the piezoelectric injector located in the first column of the first row of the at least two piezoelectric injectors can be first determined, and then the initial position of the piezoelectric injector located in the second column of the first row can be determined based on the distance between the adjusted piezoelectric injector located in the first column of the first row and the piezoelectric injector located in the second column of the first row, and the initial position of the piezoelectric injector located in the first column of the second row can be determined based on the distance between the adjusted piezoelectric injector located in the first column of the first row and the piezoelectric injector located in the first column of the second row, and then the initial position of each piezoelectric injector of the at least two piezoelectric injectors is derived in order.

[0082] It should be understood that the second camera may be an upper vertical camera mounted above the at least two piezoelectric injectors, and the vision algorithm used therein may be a conventional technical means in the art and will not be described in detail in this application.

[0083] In the embodiment of the present application, the initial position of each of the at least two piezoelectric injectors is not limited to being determined by the first camera and the second camera in sequence. For example, each of the at least two piezoelectric injectors can be controlled to print a calibration point in a predetermined area, and the second camera can sequentially recognize the calibration point printed by each piezoelectric injector, and the distance between two adjacent piezoelectric injectors can be adjusted according to the above-mentioned predetermined distance after identification, and finally determine the initial position of each of the at least two piezoelectric injectors. Specifically, first, the piezoelectric injector located in the first column of the first row of the at least two piezoelectric injectors is controlled to control and print a calibration point in a predetermined area, and the second camera identifies the calibration point, and determines the initial position of the piezoelectric injector located in the first column of the first row. Next, the piezoelectric injector located in the second column of the first row of at least two of the piezoelectric injectors is controlled to print a calibration point in a predetermined area, and the calibration point is identified by a second camera, and the position of the piezoelectric injector located in the second column of the first row is adjusted according to a predetermined distance between the piezoelectric injector located in the first column of the first row and the piezoelectric injector located in the second column of the first row, and an initial position of the piezoelectric injector located in the second column of the first row is determined, and in this order, the initial position of each piezoelectric injector is determined.

[0084] As a further optional embodiment of the present application, after performing the first correction process on the at least two piezoelectric injectors, before obtaining the specification parameters of the backlight panel, and generating the movement paths of the at least two piezoelectric injectors according to the specification parameters of the backlight panel, further comprising: Identifying marking points of the backlight panel based on the second camera, where the number of marking points of the backlight panel is at least two; Determining whether a connecting line formed by connecting the marking points of any two adjacent backlight panels is parallel to a calibration line set on the substrate; when it is determined that the connecting line formed by connecting the marking points of any two adjacent backlight panels is not parallel to the calibration line set on the substrate, performing a second correction process on the backlight panel until the connecting line formed by connecting the marking points of any two adjacent backlight panels becomes parallel to the calibration line set on the substrate; The method includes determining a printing position of a piezoelectric injector corresponding to a calibration point based on the marking points of the corrected backlight panel, and calculating a printing position of each of the at least two piezoelectric injectors based on the printing position of the piezoelectric injector corresponding to the calibration point and an initial position of the piezoelectric injector corresponding to the calibration point.

[0085] Specifically, after identifying the calibration point based on the second camera, and determining the initial position of the piezoelectric injector corresponding to the calibration point and the initial position of each of the at least two piezoelectric injectors, the backlight panel is placed on the substrate, and the marking points set on the backlight panel are identified based on the second camera, and it is determined whether the connecting line formed by connecting the marking points of any two adjacent backlight panels is parallel to the calibration line set on the substrate. Here, the number of marking points of the backlight panel may be at least two, and the connecting line formed by any two of the marking points corresponds to the calibration line set on the substrate. For example, reference may be made here to the planar schematic diagram of the backlight panel provided by the embodiment of the present application shown in FIG. 6. As shown in FIG. 6, the planar schematic diagram of the backlight panel is taken as an example. As shown in Fig. 6, the backlight panel may include, but is not limited to, light emitting diodes (LEDs) arranged in 5 rows and 3 columns, and one marking point is provided at each corresponding position of four vertices of the backlight panel, where the connecting line formed by connecting the marking point corresponding to the upper left vertex with the marking point corresponding to the lower left vertex can be parallel to the connecting line formed by connecting the marking point corresponding to the upper right vertex with the marking point corresponding to the lower right vertex, the connecting line formed by connecting the marking point corresponding to the upper left vertex with the marking point corresponding to the upper right vertex can be parallel to the connecting line formed by connecting the marking point corresponding to the lower left vertex with the marking point corresponding to the lower right vertex, and any two adjacent connecting lines are perpendicular.Based on this, the length of the calibration line set on the substrate can be a predetermined ratio to the length of the connecting line formed by connecting any two adjacent marking points, but is not limited to this, and since the substrate is under the at least two piezoelectric injectors and has a relatively fixed position, the calibration line in the Y-axis direction of the plane can be parallel to the trajectories of the at least two piezoelectric injectors moving in the Y-axis direction of the plane, and the calibration line in the X-axis direction of the plane can be parallel to the trajectories of the at least two piezoelectric injectors moving in the X-axis direction of the plane.

[0086] It should be understood that if the connecting line formed by connecting the marking point corresponding to the upper left vertex and the marking point corresponding to the lower left vertex, or the connecting line formed by connecting the marking point corresponding to the upper right vertex and the marking point corresponding to the lower right vertex, is not parallel to the calibration line in the Y-axis direction of the plane, the backlight panel will not be positioned at an accurate position on the substrate (i.e., it is determined that the connecting line formed by connecting the marking points of any two adjacent backlight panels is not parallel to the calibration line set on the substrate), and the at least two piezoelectric injectors are likely to result in the backlight panel not being able to accurately print the reflective layer. Naturally, it should be understood that if the connecting line formed by connecting the marking point corresponding to the upper left vertex and the marking point corresponding to the upper right vertex, or the connecting line formed by connecting the marking point corresponding to the lower left vertex and the marking point corresponding to the lower right vertex, is not parallel to the calibration line in the Y-axis direction of the plane, the backlight panel will not be positioned at an accurate position on the substrate (i.e., it is determined that the connecting line formed by connecting the marking points of any two adjacent backlight panels is not parallel to the calibration line set on the substrate), and the at least two piezoelectric injectors are likely to result in the backlight panel not being able to accurately print the reflective layer.

[0087] In addition, in the embodiments of the present application, the nozzle injection directions of the at least two piezoelectric injection valves can be rotated so that the movement trajectories of the at least two piezoelectric injection valves on a plane are parallel to the connecting line formed by connecting the marking points of any two adjacent backlight panels, but are not limited thereto.

[0088] Furthermore, after determining that the connecting line formed by connecting the marking points of any two adjacent backlight panels is parallel to the calibration line set on the substrate, the printing position of the piezoelectric injector corresponding to the calibration point can be determined based on the marking points of the backlight panel first, where it is possible to first determine the coordinates corresponding to the marking points of the backlight panel, and then calculate the coordinates of the piezoelectric injector corresponding to the calibration point based on the coordinates corresponding to the marking points, but is not limited thereto, and the coordinates of the piezoelectric injector corresponding to the calibration point can be understood as the printing position of the piezoelectric injector corresponding to the calibration point.

[0089] Furthermore, after calculating the printing position of the piezoelectric injector corresponding to the calibration point, a movement trajectory from the initial position to the printing position is determined based on the initial position of the piezoelectric injector corresponding to the calibration point, and then the printing position of each piezoelectric injector is calculated based on the movement trajectory and the initial position of each of the at least two piezoelectric injectors, so that the printing positions of each of the at least two piezoelectric injectors can be moved to their corresponding printing positions.

[0090] As a further optional embodiment of the present application, the at least two piezoelectric injectors include at least two large nozzle piezoelectric injectors and at least two small nozzle piezoelectric injectors.

[0091] The execution of the first correction process for the at least two piezoelectric injectors further includes: Obtaining an adhesion quality of each large nozzle piezoelectric injector at the same time interval, and determining whether the adhesion quality of each large nozzle piezoelectric injector is consistent with a predetermined first quality; When it is detected that the adhesive quality of the large nozzle piezoelectric injector does not match the predetermined first quality, adjusting the valve air pressure of the large nozzle piezoelectric injector until the adhesive quality of the large nozzle piezoelectric injector matches the predetermined first quality; Obtaining an adhesion quality of each small nozzle piezoelectric injector at the same time interval, and determining whether the adhesion quality of each small nozzle piezoelectric injector is consistent with a predetermined second quality; When it is detected that the adhesion quality of the small-nozzle piezoelectric injector does not match a predetermined second quality, adjusting the valve air pressure of the small-nozzle piezoelectric injector until the adhesion quality of the small-nozzle piezoelectric injector matches the predetermined second quality.

[0092] Specifically, it is possible to detect whether the valve air pressures of the large nozzle piezoelectric injectors are consistent depending on the adhesive quality of each large nozzle piezoelectric injector within the same time, and in some cases, if there is a large nozzle piezoelectric injector whose adhesive quality does not meet the predetermined first quality, the valve air pressure of the large nozzle piezoelectric injector can be increased. In some cases, if there is a large nozzle piezoelectric injector whose adhesive quality exceeds the predetermined first quality, the valve air pressure of the large nozzle piezoelectric injector can be decreased. Of course, in the embodiment of the present application, it is also possible to make the adhesive quality of each piezoelectric injector constant within the same time by controlling the injection period of each piezoelectric injector. For example, if a large nozzle piezoelectric injector whose adhesive quality does not meet the predetermined first quality is detected, the injection period of each large nozzle piezoelectric injector can be increased, and during the increased injection time, only the large nozzle piezoelectric injector whose adhesive quality does not meet the predetermined first quality is kept in the on state, and all the remaining large nozzle piezoelectric injectors are adjusted to be in the off state.

[0093] Then, in the same time, the valve air pressure of each small nozzle piezoelectric injector can be detected according to the adhesive output (output) quality of each small nozzle piezoelectric injector, and in some cases, when there is a small nozzle piezoelectric injector whose adhesive quality is lower than the second predetermined quality, the valve air pressure of the small nozzle piezoelectric injector can be increased.In some cases, when there is a small nozzle piezoelectric injector whose adhesive quality is higher than the second predetermined quality, the valve air pressure of the small nozzle piezoelectric injector can be decreased.

[0094] Of course, in the embodiment of the present application, it is also possible to make the bonding quality of each piezoelectric injector constant within the same time by controlling the injection cycle of each piezoelectric injector. For example, when a small nozzle piezoelectric injector whose bonding quality does not meet the second predetermined quality is detected, the injection cycle of each small nozzle piezoelectric injector can be increased, and during the increased injection time, only the small nozzle piezoelectric injector whose bonding quality does not meet the second predetermined quality is kept in the on state, and all the remaining small nozzle piezoelectric injectors are adjusted to be in the off state.

[0095] In addition, the method of determining the adhesion quality of each piezoelectric injector can be, but is not limited to, first moving each piezoelectric injector onto a balance, and then automatically recording the adhesion quality of each piezoelectric injector over the same period of time by the balance.

[0096] As a further optional embodiment of the present application, performing the first correction process on the at least two piezoelectric injectors further comprises: The method includes performing a preheating process on the at least two piezoelectric injectors such that nozzle temperatures of the at least two piezoelectric injectors are within a predetermined temperature range.

[0097] Specifically, a large amount of heat is generated due to the expansion and contraction of the piezoelectric ceramics caused by the high-frequency deformation of the piezoelectric injector, and the friction and impact of the striker, and the temperature change of the valve body caused by the heat causes the flow rate of the adhesive to fluctuate for the temperature-sensitive white oil reflector, so it is necessary to perform a preheating treatment on the white oil reflector at the outlet flow path of the piezoelectric injector so as to control the outlet temperature of the piezoelectric injector between 30 degrees and 45 degrees. Naturally, in the embodiment of the present application, the temperature can be limited to between 30 degrees and 45 degrees, but is not limited thereto.

[0098] Here, we can refer to the schematic diagram of the flow rate change curve of at least two piezoelectric injectors provided by the embodiments of the present application shown in FIG. 7. As shown in FIG. 7, when the at least two piezoelectric injectors print the reflective layer in a high frequency non-temperature controlled state, the fluctuation of the jet flow rate of the nozzle is significant, which is likely to affect the thickness of the reflective layer. When the at least two piezoelectric injectors print the reflective layer in a low frequency non-temperature controlled state, the fluctuation of the jet flow rate of the nozzle is still significant, which also affects the thickness of the reflective layer. When the at least two piezoelectric injectors print the reflective layer in a temperature controlled state, the fluctuation of the jet flow rate of the nozzle tends to be stable, which makes it easier to keep the thickness of the reflective layer constant at all times.

[0099] In a further optional embodiment of the present application, before controlling the at least two piezoelectric injectors that have been corrected to print according to the movement path, further Blending a diluent of a first predetermined concentration with a leveling agent of a second predetermined concentration to obtain a printing material for the at least two piezoelectric injectors.

[0100] Controlling at least two corrected piezoelectric injection valves to print according to the movement path, The method includes filling the at least two compensated piezoelectric injectors with a printing material, and controlling the at least two compensated piezoelectric injectors to print according to a moving path.

[0101] Specifically, by selecting a diluent with a first predetermined concentration, the viscosity range of the reflective layer material can be controlled to be between 1000 and 10000 mPas, and by selecting a leveling agent with a second predetermined concentration, the material can be well fused after being sprayed onto the substrate by the piezoelectric spray valve. Of course, in the embodiment of the present invention, the viscosity range can be controlled to be between 1000 and 10000 mPas, but is not limited thereto.

[0102] In yet another optional embodiment of the present application, before controlling and printing at least two corrected piezoelectric injectors according to the movement path, further This includes cleaning the surface of the backlight panel.

[0103] Specifically, in order to ensure the opening shape and opening accuracy of the white oil around the LED of the backlight panel, the surface of the backlight panel is cleaned using a plasma cleaner after the die bonding process of the backlight panel, thereby reducing the influence of the rosin flux remaining in the previous die bonding process on the opening shape of the white oil. Here, when the surface of the substrate is cleaned using a plasma cleaner, the process gas can be controlled to a mixed gas of Ar and O2, the gas flow rate can be controlled to 30sccm to 100sccm, the power can be controlled to 100W to 300W, and the cleaning time can be controlled to 30s to 100s. Of course, in the embodiment of the present application, it is possible to control each of the above parameters to the corresponding ranges, but is not limited thereto.

[0104] In a further optional embodiment of the present application, after controlling the at least two piezoelectric injectors that have been corrected to print according to the moving path, further: and curing the reflective layer of the printed backlight panel.

[0105] Specifically, when it is determined that the material for printing the reflective layer is a UV curable material, after completing the printing of the reflective layer, the curing height of the strip UV lamp is first determined, the distance between the strip UV lamp and the substrate is adjusted to the curing height, and then the strip UV lamp can be controlled to move back and forth along the plane Y-axis on the surface of the reflective layer of the backlight panel to carry out a curing process on the reflective layer of the backlight panel. Note that, the strip UV lamp in this specification may be provided on the gantry structure shown in FIG. 2 above, but is not limited thereto.

[0106] If the material for printing the reflective layer is determined to be a thermosetting material, after the printing of the reflective layer is completed, the reflective layer can be transferred to the next step of being thermally cured by an Oven.

[0107] In yet another optional embodiment of the present application, after controlling at least two piezoelectric injectors that have been corrected to print according to the moving path, further: At least two piezoelectric injectors are moved to a cleaning area and a cleaning process is performed on each piezoelectric injector.

[0108] Specifically, after the printing on the reflective layer is completed, the at least two piezoelectric injectors can be controlled to move to a cleaning area, and the at least two piezoelectric injectors can be immersed in a sponge containing a reflective layer cleaning solvent for 1 to 2 s. After the cleaning process is completed, the at least two piezoelectric injectors can also be controlled to move to a dust-free cloth area, and each piezoelectric injector can be wiped to remove the solvent and reflective layer material.

[0109] Reference may now be made to the schematic diagram of the printing effect of at least two other piezoelectric injectors provided by the embodiments of the present application shown in FIG.

[0110] As shown in Fig. 8, the at least two piezoelectric injectors can include a large nozzle piezoelectric injector and a small nozzle piezoelectric injector, where the nozzle inner diameter of the large nozzle piezoelectric injector can be set to 0.15-0.3mm, but is not limited thereto, the temperature is set to T1, the nozzle inner diameter of the small nozzle piezoelectric injector can be set to 0.075-0.1mm, but is not limited thereto, the temperature is set to T2, and the temperature can be controlled between 45°C>T1>T2>room temperature (25°C), and the temperature is kept constant for 20 minutes in advance. Of course, in the embodiment of the present application, each of the above parameters can be controlled within the above corresponding range, but is not limited thereto.

[0111] Specifically, the large nozzle piezoelectric injector can be controlled to be turned on in the first printing area not including the light emitting diodes, the small nozzle piezoelectric injector can be turned off, and the large nozzle piezoelectric injector can be controlled to move along the edge of the first printing area toward the second printing area including all the light emitting diodes. Here, the movement trajectory of the large nozzle piezoelectric injector may be, but is not limited to, first moving from the upper end of the backlight panel to the lower end of the backlight panel in the negative direction along the Y axis of the plane at a constant speed. Note that the present application may move a predetermined distance in the positive direction along the X axis of the plane (not shown in FIG. 8), and then move from the lower end of the backlight panel to the upper end of the backlight panel in the positive direction along the Y axis of the plane at a constant speed (not shown in FIG. 8), and repeat the movement trajectory of the large nozzle piezoelectric injector described above until the large nozzle piezoelectric injector moves to the second printing area. Here, the predetermined distance can be determined according to the nozzle diameters of at least two of the piezoelectric injectors or the number of injection material layers corresponding to the reflective layer. For example, when currently controlling and printing a large-nozzle piezoelectric injector, it can be moved in the negative direction along the X-axis of the plane by a distance equal to the nozzle diameter of the large-nozzle piezoelectric injector, but is not limited thereto.

[0112] Furthermore, in the second printing area, the large nozzle piezoelectric injector can be first turned off, the small nozzle piezoelectric injector can be turned on, and the small nozzle piezoelectric injector can be controlled to move from the lower end of the backlight panel to the upper end of the backlight panel at a constant speed in the positive direction along the Y-axis of the plane. Here, when the small nozzle piezoelectric injector directly above the light-emitting diode moves from the lower end of the light-emitting diode to the upper end of the light-emitting diode at a constant speed, the small nozzle piezoelectric injector directly above the light-emitting diode can be controlled to be turned off, and when the small nozzle piezoelectric injector directly above the light-emitting diode passes the light-emitting diode, the small nozzle piezoelectric injector can be adjusted from the off state to the on state. It should be understood that the present application can also repeat the above-mentioned movement trajectory of the small nozzle piezoelectric injector, and can also move the small nozzle piezoelectric injector by a distance corresponding to the nozzle diameter of the small nozzle piezoelectric injector along the X-axis of the plane until the small nozzle piezoelectric injector is moved to the first printing area.

[0113] Furthermore, in the first printing area, the large nozzle piezoelectric injector is turned on and the small nozzle piezoelectric injector is turned off, and can be re-controlled to move at a constant speed in the negative direction along the Y axis of the plane from the upper end of the backlight panel to the lower end of the backlight panel, and the movement trajectory of the large nozzle piezoelectric injector and the movement trajectory of the small nozzle piezoelectric injector are repeated until the entire reflective layer of the backlight panel is printed.

[0114] Reference may now be made to the schematic diagram of the printing effect of at least two other piezoelectric injectors provided by the embodiments of the present application shown in FIG.

[0115] As shown in Fig. 9, the at least two piezoelectric injectors can include a large nozzle piezoelectric injector and a small nozzle piezoelectric injector, where the nozzle inner diameter of the large nozzle piezoelectric injector can be set to 0.15-0.3mm, but is not limited thereto, the temperature is set to T1, the nozzle inner diameter of the small nozzle piezoelectric injector can be set to 0.075-0.1mm, but is not limited thereto, the temperature is set to T2, and the temperature can be controlled between 45°C>T1>T2>room temperature (25°C), and the temperature is kept constant for 20 minutes in advance. Of course, in the embodiment of the present application, each of the above parameters can be controlled within the above corresponding range, but is not limited thereto.

[0116] Specifically, the large nozzle piezoelectric injector can be controlled to be turned on in the first printing area not including the light emitting diodes, the small nozzle piezoelectric injector can be turned off, and the large nozzle piezoelectric injector can be controlled to move along the edge of the first printing area toward the second printing area including all the light emitting diodes. Here, the movement trajectory of the large nozzle piezoelectric injector may be, but is not limited to, first moving from the upper end of the backlight panel to the lower end of the backlight panel in the negative direction along the Y axis of the plane at a constant speed. Note that the present application may move a predetermined distance in the positive direction along the X axis of the plane (not shown in FIG. 9), and then move from the lower end of the backlight panel to the upper end of the backlight panel in the positive direction along the Y axis of the plane at a constant speed (not shown in FIG. 9), and repeat the movement trajectory of the large nozzle piezoelectric injector described above until the large nozzle piezoelectric injector moves to the second printing area. Here, the predetermined distance can be determined according to the nozzle diameters of at least two of the piezoelectric injectors or the number of injection material layers corresponding to the reflective layer. For example, when currently controlling and printing a large-nozzle piezoelectric injector, it can be moved in the negative direction along the X-axis of the plane by a distance equal to the nozzle diameter of the large-nozzle piezoelectric injector, but is not limited thereto.

[0117] Further, in the second printing area, the large nozzle piezoelectric injector can be maintained in an off state, the small nozzle piezoelectric injector can be maintained in an on state, and controlled to move in a positive direction along the Y axis of the plane from the lower end of the backlight panel to the lower end of the light emitting diode at a constant speed. Then, the large nozzle piezoelectric injector can be turned off, the small nozzle piezoelectric injector can be turned on, and controlled to move in a positive direction along the Y axis of the plane from the lower end of the light emitting diode to the upper end of the light emitting diode at a constant speed. Here, the small nozzle piezoelectric injector is arranged symmetrically at both ends of the light emitting diode, and the small nozzle piezoelectric injector is not in the area directly above the light emitting diode. Then, the large nozzle piezoelectric injector can be turned on, the small nozzle piezoelectric injector can be turned off, and controlled to move in a positive direction along the Y axis of the plane from the upper end of the light emitting diode to the upper end of the backlight panel at a constant speed. It should be understood that the present application can also repeat the movement trajectory of the small nozzle piezoelectric injector and the movement trajectory of the large nozzle piezoelectric injector, and can also move the large nozzle piezoelectric injector by a distance corresponding to the nozzle diameter of the large nozzle piezoelectric injector along the plane X-axis until the large nozzle piezoelectric injector is moved to the first printing area.

[0118] Furthermore, in the first printing area, the large nozzle piezoelectric injector is turned on and the small nozzle piezoelectric injector is turned off, and can be re-controlled to move at a constant speed in the negative direction along the Y axis of the plane from the upper end of the backlight panel to the lower end of the backlight panel, and the movement trajectory of the large nozzle piezoelectric injector and the movement trajectory of the small nozzle piezoelectric injector are repeated until the entire reflective layer of the backlight panel is printed.

[0119] Please refer to FIG. 10, which shows a structural schematic diagram of an apparatus for printing the reflective layer of a backlight panel provided by an embodiment of the present application.

[0120] As shown in FIG. 10, the printing device for the backlight panel reflective layer can include at least a first processing module 1001, a generating module 1002, and a printing module 1003, where: The first processing module 1001 is configured to perform a first correction process for the at least two piezoelectric injectors; The generating module 1002 is configured to obtain specification parameters of a backlight panel, and generate movement paths of at least two piezoelectric injectors according to the specification parameters of the backlight panel. The printing module 1003 is configured to control and print at least two compensated piezoelectric injectors according to a moving path.

[0121] In some possible embodiments, the first processing module includes: The device includes a first control unit that acquires a distance between the at least two piezoelectric injectors and a substrate based on a contact sensor, and controls the distance between the at least two piezoelectric injectors and the substrate to be a predetermined distance, where the substrate is used to support a backlight panel.

[0122] In some possible embodiments, the first processing module further comprises: A first acquisition unit configured to acquire nozzle shapes of the at least two piezoelectric injectors based on a first camera, and determine a distance between any two adjacent piezoelectric injectors of the at least two piezoelectric injectors based on the nozzle shapes, where the first camera is disposed under the at least two piezoelectric injectors; and a second control unit configured to adjust the distance between any two adjacent piezoelectric injectors according to a predetermined distance.

[0123] In some possible embodiments, the first processing module further comprises: a printing unit configured to control any one of the at least two piezoelectric injectors to print calibration points in a predetermined area; an identification unit configured to identify calibration points based on the second camera and determine initial positions of the piezoelectric injectors corresponding to the calibration points, where the second camera is provided above the at least two piezoelectric injectors; and a third control unit configured to determine an initial position of each of the at least two piezoelectric injectors based on the adjusted distance between any two adjacent piezoelectric injectors and the initial position of the piezoelectric injector corresponding to the calibration point.

[0124] In some possible embodiments, the at least two piezoelectric injectors include at least two large nozzle piezoelectric injectors and at least two small nozzle piezoelectric injectors.

[0125] The first processing module further comprises: a second acquisition unit configured to acquire an adhesion quality of each large nozzle piezoelectric injector at the same time interval, and determine whether the adhesion quality of each large nozzle piezoelectric injector is consistent with a predetermined first quality; a fourth control unit configured to adjust a valve air pressure of the large nozzle piezoelectric injector when it is detected that the adhesion quality of the large nozzle piezoelectric injector does not match a predetermined first quality until the adhesion quality of the large nozzle piezoelectric injector matches the predetermined first quality; a third acquisition unit configured to acquire an adhesion quality of each small-nozzle piezoelectric injector at the same time distance and determine whether the adhesion quality of each small-nozzle piezoelectric injector is consistent with a predetermined second quality; and a fifth control unit configured to adjust the valve air pressure of the small-nozzle piezoelectric injector when it is detected that the adhesion quality of the small-nozzle piezoelectric injector does not match a predetermined second quality until the adhesion quality of the small-nozzle piezoelectric injector matches the predetermined second quality.

[0126] In some possible embodiments, the first processing module further comprises: The heating unit is configured to perform a pre-heating process on the at least two piezoelectric injectors such that the nozzle temperatures of the at least two piezoelectric injectors are in a predetermined temperature range.

[0127] In some possible embodiments, the apparatus further comprises: The printing device further includes a blending module configured to blend a diluent having a first predetermined concentration with a leveling agent having a second predetermined concentration to obtain a printing material for the at least two piezoelectric injectors before controlling the at least two corrected piezoelectric injectors to print according to the moving path.

[0128] The printing module is specifically used for filling at least two compensated piezoelectric injection valves with printing material, and controlling the at least two compensated piezoelectric injection valves to print according to a moving path.

[0129] In some possible embodiments, the apparatus further comprises: A first cleaning module is configured to clean a surface of the substrate before printing by controlling the at least two compensated piezoelectric injectors according to a movement path.

[0130] In some possible embodiments, the apparatus further comprises: an identification module configured to obtain specification parameters of the backlight panel after performing a first correction process on the at least two piezoelectric injectors, and identify marking points of the backlight panel based on a second camera before generating movement paths of the at least two piezoelectric injectors based on the specification parameters of the backlight panel, where the number of marking points of the backlight panel is at least two; A determining module configured to determine whether a connecting line formed by connecting the marking points of any two adjacent backlight panels is parallel to a calibration line set on a substrate, where the substrate is used to support the backlight panels; a second processing module configured to perform a second correction process on the backlight panel when it is determined that a connecting line formed by connecting the marking points of any two adjacent backlight panels is not parallel to the calibration line set on the substrate, until the connecting line formed by connecting the marking points of any two adjacent backlight panels becomes parallel to the calibration line set on the substrate; The system further comprises a calculation module configured to determine printing positions of the piezoelectric injectors corresponding to the calibration points based on the marking points of the corrected backlight panel, and to calculate printing positions of each of the at least two piezoelectric injectors based on the printing positions of the piezoelectric injectors corresponding to the calibration points and the initial positions of the piezoelectric injectors corresponding to the calibration points.

[0131] In some possible implementations, the backlight panel comprises at least two light emitting diodes.

[0132] The generation module is A fourth acquisition unit configured to acquire a surface size of the backlight panel, a size of each light emitting diode, and a position of each light emitting diode on the backlight panel; A dividing unit configured to determine a first printing area and a second printing area of ​​the at least two piezoelectric injectors based on a surface size of the backlight panel, where the first printing area does not include the light emitting diodes, the at least two piezoelectric injectors are in an on state in the first printing area, and the second printing area includes all the light emitting diodes; a processing unit configured to determine locations of at least two piezoelectric injectors in the second printing area in an on state and an off state based on a size of each light emitting diode and a location of each light emitting diode on the backlight panel; and a generating unit configured to generate movement paths for the at least two piezoelectric injectors based on respective printing positions of the at least two piezoelectric injectors, a first printing area, and positions where the at least two piezoelectric injectors are in an on state and an off state within a second printing area.

[0133] In some possible embodiments, the apparatus further comprises: Before controlling the at least two corrected piezoelectric injectors to print according to the movement path, the method further includes a first adjustment module configured to determine a printing height of the at least two piezoelectric injectors based on a surface size of the backlight panel, and adjust a distance between the at least two piezoelectric injectors and the substrate based on the printing height of the at least two piezoelectric injectors.

[0134] In some possible embodiments, the apparatus further comprises: A curing module is configured to control the compensated at least two piezoelectric injectors to print according to the moving path, and then cure the printed reflective layer of the backlight panel.

[0135] In some possible embodiments, the apparatus further comprises: A second cleaning module is provided, which is configured to control the at least two piezoelectric injectors that have been subjected to the correction process to print according to the movement path, and then move the at least two piezoelectric injectors to a cleaning area and perform a cleaning process on each piezoelectric injector.

[0136] It is obvious to those skilled in the art that the technical solutions in the embodiments of the present application can be implemented with the help of software and / or hardware. The terms "unit" and "module" in this specification refer to software and / or hardware that can perform a specific function independently or in combination with other components, where the hardware may be, for example, a Field-Programmable Gate Array (FPGA), an Integrated Circuit (IC), etc.

[0137] Each processing unit and / or module in the embodiments of the present application may be implemented by analog circuitry that performs the functions in the embodiments of the present application, or may be implemented by software that performs the functions in the embodiments of the present application.

[0138] Please refer to FIG. 11, which shows a structural schematic diagram of an apparatus for printing another backlight panel reflective layer provided by an embodiment of the present application.

[0139] As shown in FIG. 11, the backlight panel reflective layer printing apparatus may include at least one processor 1101, at least one network interface 1104, a user interface 1103, a memory 1105, and at least one communication bus 1102.

[0140] Here, a communication bus 1102 may be used to implement communication between the above components.

[0141] Here, the user interface 1103 can include buttons, and the optional user interfaces can include a standard wired interface, and a wireless interface.

[0142] Here, the network interface 1104 may include, but is not limited to, a Bluetooth module, an NFC module, a Wi-Fi module, and the like.

[0143] Here, the processor 1101 may include one or more processing cores. The processor 1101 connects various parts of the entire electronic device 1100 using various interfaces and lines, and performs various functions of the electronic device 1100 and processes data by operating or executing instructions, programs, code sets, or instruction sets stored in the memory 1105, and by calling up data stored in the memory 1105. Optionally, the processor 1101 may be implemented in at least one hardware form of a DSP, an FPGA, or a PLA. The processor 1101 may integrate one or more combinations of a CPU, a GPU, a modem, etc. Here, the CPU mainly processes the operating system, the user interface, applications, etc., the GPU is used to be in charge of rendering and drawing the content displayed by the display, and the modem is used to handle wireless communication. It should be understood that the modem may not be integrated into the processor 1101 and may be implemented by a separate chip.

[0144] Here, the memory 1105 may include a RAM or a ROM. Optionally, the memory 1105 includes a non-transitory computer-readable medium. The memory 1105 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 1105 may include a program storage area and a data storage area, where the program storage area may store instructions for implementing an operating system, instructions for at least one function (e.g., touch function, sound playback function, image playback function, etc.), instructions for implementing the above-mentioned method embodiments, etc. The data storage area may store data related to the above-mentioned various method embodiments, etc. The memory 1105 may optionally be at least one storage device located remotely from the processor 1101. As shown in FIG. 11, the memory 1105 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a printing application for a backlight panel reflective layer.

[0145] Specifically, the processor 1101 can be used to invoke a printing application for a backlight panel reflective layer stored in the memory 1105, specifically: performing a first correction process on at least two piezoelectric injectors; Obtaining specification parameters of a backlight panel, and generating movement paths of at least two piezoelectric injection valves according to the specification parameters of the backlight panel; The at least two corrected piezoelectric injectors are controlled to perform an operation of printing according to the movement path.

[0146] In some possible embodiments, performing a first correction process on the at least two piezoelectric injectors includes: The method includes obtaining a distance between the at least two piezoelectric injectors and a substrate based on a contact sensor, and controlling the distance between the at least two piezoelectric injectors and the substrate to be a predetermined distance, where the substrate is used to support a backlight panel.

[0147] In some possible embodiments, performing the first correction process on the at least two piezoelectric injectors further includes: Obtaining nozzle shapes of the at least two piezoelectric injectors based on a first camera, and determining a distance between any two adjacent piezoelectric injectors of the at least two piezoelectric injectors based on the nozzle shapes, where the first camera is disposed under the at least two piezoelectric injectors; and adjusting the distance between any two adjacent piezoelectric injectors according to a predetermined distance.

[0148] In some possible embodiments, performing the first correction process on the at least two piezoelectric injectors further includes: Controlling any one of the at least two piezoelectric injectors to print a calibration point in a predetermined area; identifying calibration points based on a second camera and determining initial positions of the piezoelectric injectors corresponding to the calibration points, where the second camera is disposed above the at least two piezoelectric injectors; and determining an initial position of each of the at least two piezoelectric injectors based on the adjusted distance between any two adjacent piezoelectric injectors and the initial position of the piezoelectric injector corresponding to the calibration point.

[0149] In some possible embodiments, the at least two piezoelectric injectors include at least two large nozzle piezoelectric injectors and at least two small nozzle piezoelectric injectors.

[0150] The execution of the first correction process for the at least two piezoelectric injectors further includes: Obtaining an adhesion quality of each large nozzle piezoelectric injector at the same time interval, and determining whether the adhesion quality of each large nozzle piezoelectric injector is consistent with a predetermined first quality; When it is detected that the adhesive quality of the large nozzle piezoelectric injector does not match the predetermined first quality, adjusting the valve air pressure of the large nozzle piezoelectric injector until the adhesive quality of the large nozzle piezoelectric injector matches the predetermined first quality; Obtaining an adhesion quality of each small nozzle piezoelectric injector at the same time interval, and determining whether the adhesion quality of each small nozzle piezoelectric injector is consistent with a predetermined second quality; When it is detected that the adhesion quality of the small-nozzle piezoelectric injector does not match a predetermined second quality, adjusting the valve air pressure of the small-nozzle piezoelectric injector until the adhesion quality of the small-nozzle piezoelectric injector matches the predetermined second quality.

[0151] In some possible embodiments, performing the first correction process on the at least two piezoelectric injectors further includes: The method includes performing a preheating process on the at least two piezoelectric injectors such that nozzle temperatures of the at least two piezoelectric injectors are within a predetermined temperature range.

[0152] In some possible embodiments, before controlling the at least two piezoelectric injectors that have been corrected to print according to the movement path, further: Blending a diluent of a first predetermined concentration with a leveling agent of a second predetermined concentration to obtain a printing material for the at least two piezoelectric injectors.

[0153] Controlling at least two corrected piezoelectric injection valves to print according to the movement path, The method includes filling the at least two compensated piezoelectric injectors with a printing material, and controlling the at least two compensated piezoelectric injectors to print according to a moving path.

[0154] In some possible embodiments, before controlling the at least two piezoelectric injectors that have been corrected according to the movement path and printing, further This includes cleaning the surface of the substrate.

[0155] In some possible embodiments, after performing the first correction process on the at least two piezoelectric injectors, before obtaining the specification parameters of the backlight panel, and generating the movement paths of the at least two piezoelectric injectors based on the specification parameters of the backlight panel, further: Identifying marking points of the backlight panel based on the second camera, where the number of marking points of the backlight panel is at least two; Determining whether a connecting line formed by connecting the marking points of any two adjacent backlight panels is parallel to a calibration line set on a substrate, where the substrate is used to support the backlight panels; when it is determined that the connecting line formed by connecting the marking points of any two adjacent backlight panels is not parallel to the calibration line set on the substrate, performing a second correction process on the backlight panel until the connecting line formed by connecting the marking points of any two adjacent backlight panels becomes parallel to the calibration line set on the substrate; The method includes determining a printing position of a piezoelectric injector corresponding to a calibration point based on the marking points of the corrected backlight panel, and calculating a printing position of each of the at least two piezoelectric injectors based on the printing position of the piezoelectric injector corresponding to the calibration point and an initial position of the piezoelectric injector corresponding to the calibration point.

[0156] In some possible embodiments, the backlight panel comprises at least two light emitting diodes.

[0157] Obtaining a specification parameter of the backlight panel; and generating a movement path of at least two piezoelectric injectors based on the specification parameter of the backlight panel. Obtaining a surface size of a backlight panel, a size of each light emitting diode, and a position of each light emitting diode on the backlight panel; Determining a first printing area and a second printing area of ​​the at least two piezoelectric injectors according to a surface size of the backlight panel, where the first printing area does not include any light emitting diodes, the at least two piezoelectric injectors are in an on state in the first printing area, and the second printing area includes all the light emitting diodes; determining positions where at least two piezoelectric injectors in the second printing area are in an on state and an off state based on a size of each light emitting diode and a position of each light emitting diode on the backlight panel; and generating movement paths for the at least two piezoelectric injectors based on respective printing positions of the at least two piezoelectric injectors, the first printing area, and positions where the at least two piezoelectric injectors are in an on state and an off state within the second printing area.

[0158] In some possible embodiments, before controlling the at least two piezoelectric injectors that have been corrected to print according to the movement path, further: The method includes determining a printing height of the at least two piezoelectric injectors based on a surface size of the backlight panel, and adjusting a distance between the at least two piezoelectric injectors and the substrate based on the printing height of the at least two piezoelectric injectors.

[0159] In some possible embodiments, after controlling the at least two piezoelectric injectors that have been corrected to print according to the movement path, further: and curing the reflective layer of the printed backlight panel.

[0160] In some possible embodiments, after controlling the at least two piezoelectric injectors that have been corrected to print according to the movement path, further: The method includes moving at least two piezoelectric injectors to a cleaning area and performing a cleaning process on each piezoelectric injector.

[0161] The present 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 above method, where the computer readable storage medium includes, but is not limited to, floppy disks, optical disks, DVDs, CD-ROMs, microdrives, and any type of disk including magnetic disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of medium or device suitable for storing instructions and / or data.

[0162] For the sake of simplicity, the embodiments of the methods are all expressed as a combination of a series of operations, but those skilled in the art should note that the present specification is not limited by the order of operations described, since certain steps may be performed in other orders or simultaneously in accordance with the present application. Those skilled in the art should also understand that the embodiments described in the present specification are all preferred embodiments, and the associated operations and modules are not necessarily required for the present application.

[0163] In the above embodiments, the description of each embodiment is given with emphasis, and for parts that are not described in detail in a specific embodiment, reference may be made to the relevant descriptions of other embodiments.

[0164] In some embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the above-mentioned device embodiments are only illustrative, and the division of units is merely a logical division of functions, and in actual implementation, the division may be in other ways, for example, multiple units or components may be combined or integrated into other systems, or some functions may be ignored or not implemented. Meanwhile, the illustrated or described mutual couplings or direct couplings or communication connections may be indirect couplings or communication connections via electrical or other service interfaces, devices or units, and may be in electrical or other forms.

[0165] The units illustrated as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed among multiple network units. Some or all of these units may be selected according to actual needs to achieve the objectives of the solution of this embodiment.

[0166] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist physically alone, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware or a software functional unit.

[0167] The integrated unit may be implemented in the form of a software functional unit and stored in a computer-readable memory when sold or used as an independent product. Based on this understanding, the technical solution of the present application may be embodied essentially or in part of the contribution to the prior art, or all or part of the technical solution, in the form of a software product, and the computer software product includes a number of instructions stored in one memory for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method in each embodiment of the present application. The memory includes a medium capable of storing program code, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a removable hard disk, a magnetic disk, an optical disk, etc.

[0168] Those skilled in the art can understand that all or part of the steps of the various methods in the above embodiments can be achieved by instructing relevant hardware through a program, which may be stored in a computer-readable memory, and the memory may include a flash memory disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0169] The above are merely illustrative examples of the present disclosure, and are not intended to limit the scope of the present disclosure. Equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. The embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the present disclosure. This application is intended to cover any variation, application, or modification of the present disclosure, including any known or customary technical means in the art that are not described in the present disclosure, in accordance with the general principles of the present disclosure. The specification and examples are considered to be illustrative only, and the scope and spirit of the present disclosure are limited by the claims.

Claims

1. performing a first correction process on at least two piezoelectric injectors; Obtaining specification parameters of a backlight panel, and generating movement paths of the at least two piezoelectric injectors according to the specification parameters of the backlight panel; and controlling and printing the at least two corrected piezoelectric injectors according to the movement path. How to print the reflective layer on a backlight panel.

2. The execution of a first correction process for the at least two piezoelectric injection valves includes: and acquiring a distance between each of the at least two piezoelectric injection valves and the backlight panel based on a contact sensor, and controlling the distance between each of the at least two piezoelectric injection valves and the backlight panel to be a predetermined distance. The method of claim 1.

3. The step of executing a first correction process on the at least two piezoelectric injectors further includes: obtaining nozzle shapes of the at least two piezoelectric injectors based on a first camera, and determining a distance between any two adjacent piezoelectric injectors of the at least two piezoelectric injectors based on the nozzle shapes, where the first camera is disposed under the at least two piezoelectric injectors; and adjusting the distance between any two adjacent piezoelectric injectors according to a predetermined distance. The method of claim 2.

4. The step of executing a first correction process on the at least two piezoelectric injectors further includes: controlling one of the at least two piezoelectric injectors to print a calibration point in a predetermined area; identifying the calibration points based on a second camera and determining initial positions of the piezoelectric injectors corresponding to the calibration points, where the second camera is positioned over the at least two piezoelectric injectors; determining an initial position of each of the at least two piezoelectric injectors based on the adjusted distance between any two adjacent piezoelectric injectors and an initial position of the piezoelectric injector corresponding to the calibration point. The method according to claim 3.

5. After performing a first correction process on the at least two piezoelectric injectors, before obtaining specification parameters of the backlight panel and generating movement paths of the at least two piezoelectric injectors based on the specification parameters of the backlight panel, further Identifying marking points on the backlight panel based on the second camera, where the number of marking points on the backlight panel is at least two; Determining whether a connecting line formed by the marking points of any two adjacent backlight panels is parallel to a calibration line set on a substrate, where the substrate is used to support the backlight panels; when it is determined that a connecting line formed by connecting any two adjacent marking points on the backlight panel is not parallel to a calibration line set on the substrate, performing a second correction process on the backlight panel until a connecting line formed by connecting any two adjacent marking points on the backlight panel becomes parallel to the calibration line set on the substrate; determining a printing position of a piezoelectric injector corresponding to the calibration point based on the marking point on the backlight panel that has been corrected, and calculating a printing position of each of the at least two piezoelectric injectors based on the printing position of the piezoelectric injector corresponding to the calibration point and an initial position of the piezoelectric injector corresponding to the calibration point. The method according to claim 4.

6. The backlight panel comprises at least two light emitting diodes; Obtaining a specification parameter of the backlight panel and generating a movement path of the at least two piezoelectric injectors based on the specification parameter of the backlight panel includes: Obtaining a surface size of the backlight panel, a size of each of the light emitting diodes, and a position of each of the light emitting diodes on the backlight panel; determining a first printing area and a second printing area of ​​the at least two piezoelectric injectors according to a surface size of the backlight panel, where the first printing area does not include the light emitting diodes, the at least two piezoelectric injectors are in an on state in the first printing area, and the second printing area includes all the light emitting diodes; determining positions in the second printing area where the at least two piezoelectric injectors are in an on state and an off state based on a size of each of the light emitting diodes and a position of each of the light emitting diodes on the backlight panel; generating movement paths for the at least two piezoelectric injectors based on respective printing positions of the at least two piezoelectric injectors, the first printing area, and positions where the at least two piezoelectric injectors are in an on state and an off state within the second printing area. The method according to claim 5.

7. The method is carried out before the die bonding process of the backlight panel; or The method is carried out after a die bonding process of a backlight panel. The method of claim 1.

8. the at least two piezoelectric injectors include at least two large nozzle piezoelectric injectors and at least two small nozzle piezoelectric injectors; The step of executing a first correction process on the at least two piezoelectric injectors further includes: acquiring an adhesion quality of each of the large nozzle piezoelectric injectors at the same time interval, and determining whether the adhesion quality of each of the large nozzle piezoelectric injectors coincides with a predetermined first quality; when it is detected that the adhesive quality of the large nozzle piezoelectric injector does not match a predetermined first quality, adjusting a valve air pressure of the large nozzle piezoelectric injector until the adhesive quality of the large nozzle piezoelectric injector matches a predetermined first quality; acquiring an adhesion quality of each of the small nozzle piezoelectric injectors at the same time interval, and determining whether the adhesion quality of each of the small nozzle piezoelectric injectors coincides with a predetermined second quality; and when it is detected that the adhesion quality of the small-nozzle piezoelectric injector does not match a predetermined second quality, adjusting a valve air pressure of the small-nozzle piezoelectric injector until the adhesion quality of the small-nozzle piezoelectric injector matches the predetermined second quality. The method of claim 2.

9. The step of executing a first correction process on the at least two piezoelectric injectors further includes: and performing a preheating process on the at least two piezoelectric injectors so that nozzle temperatures of the at least two piezoelectric injectors are within a predetermined temperature range. The method of claim 2.

10. a first processing module configured to perform a first calibration process on the at least two piezoelectric injectors; A generating module configured to obtain specification parameters of a backlight panel and generate movement paths of the at least two piezoelectric injectors according to the specification parameters of the backlight panel; and a printing module configured to control and print the at least two corrected piezoelectric injectors according to the movement path. A printing device for the reflective layer of a backlight panel.

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