Mode configuration method related to RGB substrate and ink-jet printer

Abstract

The invention discloses a mode configuration method related to an RGB substrate, and the method comprises the steps: obtaining a first identifier and a second identifier of an ink-jet printer, the first identifier being an identifier of the number of nozzle modules, and the second identifier being a functional layer identifier printed on the substrate; the substrate is an RGB (Red, Green and Blue) substrate and comprises various types of sub-pixel pits; the functional layer identifier comprises a light-emitting layer identifier and a packaging layer identifier; if the first identifier is a single-nozzle module identifier and a light-emitting layer is currently printed, executing printing operation of the substrate in a separate printing mode; according to the separated printing mode, the single-nozzle module only prints one type of sub-pixel pits in one stroke, and multiple types of sub-pixel pits are printed in multiple strokes. The configuration efficiency of multiple printing modes of the substrate bitmap can be improved, and the printing modes are automatically configured.

Description

Technical Field

[0001] The present application relates to the technical field of inkjet printing of display screens, and in particular to a pattern configuration method and an inkjet printer involving an RGB substrate. Background Art

[0002] Currently, when printing at the pixel layer (such as the OLED pixel layer), the inkjet printer needs to associate the coordinates of the sub-pixel pits (for example, the sub-pixel pits corresponding to R, G, and B in the RGB substrate) with the nozzle coordinates in the nozzle module, and then the inkjet printer performs the printing operation.

[0003] Before the above operations, and during the actual printing process, it is necessary to manually configure the various printing modes of the substrate bitmap according to the printing environment. The printing environment includes the number of nozzle modules of the inkjet printer (for example: single nozzle module or multiple nozzle modules), whether to print the OLED light-emitting layer (for example: hole injection layer HIL, hole transport layer HTL, light-emitting layer EML, electron injection layer EIL, electron transport layer ETL) or the encapsulation layer (for example: thin film encapsulation), etc. The substrate bitmap refers to the distribution of the ink droplets landing points in the sub-pixel pits.

[0004] However, the above manual configuration requires high manual experience, may cause manual errors, and has low configuration efficiency.

[0005] Therefore, there is an urgent need for a pattern configuration method involving an RGB substrate and an inkjet printer. Summary of the Invention

[0006] The present application provides a mode configuration method and an inkjet printer involving an RGB substrate, which can improve the configuration efficiency of various printing modes of a substrate bitmap and realize automatic configuration of the printing mode.

[0007] In a first aspect, the present application discloses a mode configuration method involving an RGB substrate, the mode configuration method comprising: obtaining a first identifier and a second identifier of an inkjet printer, wherein the first identifier is an identifier of the number of nozzle modules, and the second identifier is an identifier of a functional layer printed on the substrate; the substrate is an RGB substrate, comprising a plurality of types of sub-pixel pits; the functional layer identifier comprises a light-emitting layer identifier and an encapsulation layer identifier; if the first identifier is an identifier of a single nozzle module and the light-emitting layer is currently being printed, a separate printing mode is adopted to perform a printing operation of the substrate; the separate printing mode is that a single nozzle module prints only one type of sub-pixel pit in one stroke, and multiple types of sub-pixel pits are printed in multiple strokes.

[0008] In the above scheme, the appropriate printing mode is automatically selected by identifying the number of nozzle modules of the inkjet printer and the functional layer to be printed. In RGB substrate printing, the functional layers are mainly divided into two categories, one is the light-emitting layer and the other is the encapsulation layer; printing the light-emitting layer requires the inkjet printer to spray ink droplets into various types of sub-pixel pits, and printing the encapsulation layer requires the inkjet printer to spray ink droplets onto the entire substrate (including sub-pixel pit areas and non-sub-pixel pit areas). In addition, a single nozzle module is often set to print the same type of ink droplets. For the light-emitting layer, multiple types of ink droplets need to be printed, such as ink droplets for R sub-pixel pits or ink droplets for B sub-pixel pits; but for the encapsulation layer, only one type of ink droplet is required for the entire substrate. For these reasons, different numbers of nozzle modules and functional layers to be printed require different printing modes; after the printing mode is set, the inkjet printer system will then complete the subsequent association of the nozzle coordinates with the coordinates of the area to be printed (various types of sub-pixel pits or the entire substrate) to perform subsequent printing operations.

[0009] The above automatic mode selection process not only avoids manual errors, but also improves mode switching efficiency, thereby improving printing efficiency. The number of printhead modules and the identification of the functional layers can be configured in advance, and the configuration parameters can be directly obtained; detailed explanation is not provided here.

[0010] In a possible embodiment, the mode configuration method also includes: if the first identifier is a single nozzle module identifier and the encapsulation layer is currently being printed, the first simultaneous printing mode is used to perform the printing operation of the substrate; the first simultaneous printing mode is for a single nozzle module to print all types of sub-pixel pits in one stroke.

[0011] In the above solution, the encapsulation layer is printed, and the entire substrate (sub-pixel pits or non-sub-pixel pits) only needs to be printed in the same pattern; in this case, the simultaneous printing mode can be directly adopted to improve printing efficiency.

[0012] In one possible embodiment, after performing a printing operation on a substrate in a separate printing mode, the mode configuration method further includes: obtaining a pre-planned number of grids to be printed in a sub-pixel pit, where the number of grids to be printed is the number of ink droplet landing points of an inkjet printer; if the number of grids to be printed in each type of sub-pixel pit is 1, then on the basis of the separate printing mode, a single landing point printing mode is adopted; the single landing point printing mode is a mode in which only one ink droplet landing point is printed in one sub-pixel pit.

[0013] In the above scheme, in addition to separate printing modes, a drop pattern is also selected. Multiple drop patterns are more efficient than single drop patterns. However, after the pixels on the substrate are rasterized, there may only be one grid to be printed in a sub-pixel pit; in this case, multiple drop patterns cannot be directly used.

[0014] In a possible embodiment, the mode configuration method further includes: if the number of grids to be printed in various types of sub-pixel pits is greater than 1, then on the basis of the separate printing mode, a multiple landing point printing mode is adopted; the multiple landing point printing mode is to print multiple ink drop landing points for one sub-pixel pit.

[0015] In the above solution, when the number of grids to be printed in the sub-pixel pit is greater than 1, the multiple landing point printing mode is directly adopted; in this case, the printing efficiency is higher.

[0016] In a possible embodiment, the mode configuration method also includes: if the first identifier is an identifier corresponding to multiple nozzle modules, a second simultaneous printing mode is used to perform the printing operation of the substrate; the second simultaneous printing mode is for multiple nozzle modules to print all types of sub-pixel pits in one stroke, and the multiple nozzle modules include two nozzle modules and three nozzle modules; obtaining the pre-planned number of grids to be printed in the sub-pixel pit, and the number of grids to be printed is the number of ink droplet landing points of the inkjet printer; if the number of grids to be printed in various types of sub-pixel pits is 1, then on the basis of the second simultaneous printing mode, a single landing point printing mode is used; the single landing point printing mode is for one sub-pixel pit to print only one ink droplet landing point.

[0017] In the above solution, in the case of multiple nozzle modules, the printing efficiency is higher when the simultaneous printing mode is adopted; and the landing point printing mode is also selected according to the number of grids to be printed in the sub-pixel pit.

[0018] In a possible embodiment, the mode configuration method further includes: if the number of grids to be printed in various types of sub-pixel pits is greater than 1, then, based on the second simultaneous printing mode, a multiple landing point printing mode is adopted; the multiple landing point printing mode prints multiple ink drop landing points for one sub-pixel pit.

[0019] In the above solution, on the basis of the simultaneous printing mode, the multiple landing point printing mode is adopted, which can improve the printing efficiency; especially compared with the single landing point mode.

[0020] In one possible embodiment, before obtaining the pre-planned number of grids to be printed in the sub-pixel pit, the pattern configuration method includes: rasterizing the substrate bitmap to obtain an integer number of grids; a sub-pixel pit includes one or more grids, and the grid size is larger than the minimum step distance of the inkjet printer; configuring the landing point of the inkjet printer ink droplet in the grid corresponding to the sub-pixel pit in a preset manner; the preset method includes manually selecting the grid to be printed in the grid corresponding to the sub-pixel pit, and determining the grid to be printed in historical printing data based on the current sub-pixel pit size, the volume of a single drop of ink, and the grid size.

[0021] The above scheme aims to illustrate the method of rasterizing the substrate bitmap. The entire substrate must be divided into an integer number of grids, because any grid can be configured as an ink droplet landing point, and the ink droplet landing point location must be complete. The grid size must be larger than the minimum step distance of the inkjet printer; if it is smaller than the minimum step distance of the inkjet printer, when two adjacent grids are both to be printed, the inkjet printer cannot directly print on one of the grids in a single stroke. V / F = D, where V is the inkjet printer's X-axis (substrate movement direction) printing speed, in mm / s; F is the ink printing frequency, in kHz, which is the number of drops that can be ejected per second; and D is the minimum step distance, in μm.

[0022] In one possible embodiment, before rasterizing the substrate bitmap to obtain an integer number of grids, the pattern configuration method further includes: identifying pixels to be printed and pixels prohibited from printing in the substrate design drawing, as well as the position coordinates of the prohibited printing pixels; disabling the pixel positions of corresponding positions in the initial substrate bitmap based on the prohibited printing pixels and the position coordinates of the prohibited printing pixels to obtain the substrate bitmap.

[0023] In the above scheme, the substrate design drawing takes the CAD software format as an example. In the design drawing of special-shaped products, some pixels are prohibited from printing, while some pixels need to be printed. Among the pixels that need to be printed, the R, G, and B sub-pixel pits all need to be printed. Based on the prohibited printing pixels and the position coordinates of the prohibited printing pixels in the substrate design drawing, the pixel positions at the corresponding positions in the initial substrate bitmap are disabled to obtain the substrate bitmap. The format of the substrate bitmap is a format that can be directly processed by an inkjet printer. This avoids manual participation in the construction of the substrate bitmap, improves the efficiency of the substrate bitmap construction, and prevents human errors.

[0024] In one possible embodiment, before rasterizing the substrate bitmap to obtain an integer number of grids, the pattern configuration method further includes: in a single-drop printing mode, performing partitioned printing on the substrate until the ink droplets fill the sub-pixel pits in each partition; obtaining a nozzle combination corresponding to the sub-pixel pit type, so as to establish an association between the coordinates of the sub-pixel pit and the coordinates of the nozzle group in subsequent printing operations; wherein one sub-pixel pit type corresponds to multiple nozzle combinations.

[0025] In the above scheme, the purpose is to establish a correspondence between each type of sub-pixel pit and a variety of nozzle combinations. On the one hand, because in the multiple landing point printing mode, the correspondence between the sub-pixel pit, the multiple ink droplet landing points in the sub-pixel pit, and the nozzle combination under multiple strokes (each printing stroke has a printing nozzle for the sub-pixel pit, and multiple printing strokes constitute the nozzle combination for the sub-pixel pit) is relatively complicated to calculate; while in the single landing point printing mode, only the relationship between the sub-pixel pit and the nozzle group needs to be paid attention to. On the other hand, the above method can be used to measure the film thickness of a single drop of ink and observe the printing effect after the sub-pixel pit is filled, and it can be obtained how many times a sub-pixel pit is printed or how many drops of ink are needed to fill it. All of the above are convenient for subsequent printing planning operations.

[0026] In a second aspect, the present application discloses an inkjet printer, comprising a processor, a memory, a user interface, and a network interface. The memory is used to store instructions, the user interface and the network interface are both used to communicate with other devices, and the processor is used to execute the instructions stored in the memory so that the defect detection device executes the following instructions:

[0027] Obtain a first identifier and a second identifier of the inkjet printer, where the first identifier is an identifier of the number of printhead modules, and the second identifier is an identifier of a functional layer printed on a substrate; the substrate is an RGB substrate including multiple types of sub-pixel pits; the functional layer identifiers include a light-emitting layer identifier and an encapsulation layer identifier;

[0028] If the first identifier is a single nozzle module identifier and the light-emitting layer is currently being printed, a separate printing mode is used to perform the printing operation of the substrate; the separate printing mode is that a single nozzle module only prints one type of sub-pixel pit in one stroke, and multiple types of sub-pixel pits are printed in multiple strokes.

[0029] The beneficial effects of this application include:

[0030] By identifying the number of nozzle modules of the inkjet printer and the functional layers to be printed, the appropriate printing mode is automatically selected. In RGB substrate printing, the functional layers are mainly divided into two categories, one is the light-emitting layer and the other is the encapsulation layer; the printing of the light-emitting layer requires the inkjet printer to spray ink droplets into various types of sub-pixel pits, and the printing of the encapsulation layer requires the inkjet printer to spray ink droplets onto the entire substrate (including sub-pixel pit areas and non-sub-pixel pit areas). In addition, a single nozzle module is often set to print the same type of ink droplets. For the light-emitting layer, multiple types of ink droplets need to be printed, such as ink droplets for R sub-pixel pits or ink droplets for B sub-pixel pits; but for the encapsulation layer, only one type of ink droplet is required for the entire substrate. For these reasons, different numbers of nozzle modules and printed functional layers require different printing modes. After the printing mode is set, the inkjet printer system will then associate the nozzle coordinates with the coordinates of the area to be printed (various types of sub-pixel pits or the entire substrate) to perform subsequent printing operations. The above automatic mode selection process not only avoids errors caused by manual participation, but also improves the efficiency of mode switching, thereby improving printing efficiency.

[0031] The encapsulation layer is printed, and the entire substrate (sub-pixel pit area or non-sub-pixel pit area) only needs to be printed with the same pattern; in this case, the simultaneous printing mode can be directly used to improve printing efficiency;

[0032] On the basis of separate printing modes, the drop point mode will also be selected. In the drop point mode, the multiple drop point mode has higher printing efficiency than the single drop point mode. However, after the pixels in the substrate are rasterized, there may be only one grid to be printed in the sub-pixel pit; in this case, the multiple drop point mode cannot be directly used;

[0033] In the case of multiple nozzle modules, the printing efficiency is higher when using the simultaneous printing mode. In addition, the drop point printing mode will be selected according to the number of grids to be printed in the sub-pixel pit.

[0034] The substrate bitmap must be rasterized. The entire substrate must be divided into an integer number of grids, as any grid can be configured as an ink droplet landing location, and the ink droplet landing locations must be complete. The grid size must be larger than the minimum step distance of the inkjet printer; if it is smaller than the minimum step distance of the inkjet printer, the inkjet printer will not be able to print directly in a single stroke when two adjacent grids are both to be printed.

[0035] Taking the CAD software format as an example, in the design drawing of special-shaped products, some pixels are prohibited from printing, while some pixels need to be printed; among the pixels that need to be printed, the R, G, and B sub-pixel pits all need to be printed. According to the prohibited printing pixels and the position coordinates of the prohibited printing pixels in the substrate design drawing, the pixel positions at the corresponding positions in the initial substrate bitmap are disabled to obtain the substrate bitmap. The format of the substrate bitmap is a format that can be directly processed by the inkjet printer; it avoids manual participation in the construction of the substrate bitmap, improves the efficiency of the substrate bitmap construction, and avoids human errors;

[0036] Establish the correspondence between each type of sub-pixel pit and multiple nozzle combinations. On the one hand, because in the multiple landing point printing mode, the calculation of the correspondence between the sub-pixel pit, the multiple ink droplet landing points in the sub-pixel pit, and the nozzle combination under multiple strokes (each printing stroke has a printing nozzle for the sub-pixel pit, and multiple printing strokes constitute the nozzle combination for the sub-pixel pit) is relatively complicated; while in the single landing point printing mode, only the relationship between the sub-pixel pit and the nozzle group needs to be paid attention to. On the other hand, the above method can be used to measure the film thickness of a single drop of ink and observe the printing effect after the sub-pixel pit is filled, and it can be obtained how many times a sub-pixel pit is printed or how many drops of ink are needed to fill it. All of the above are convenient for subsequent printing planning operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic flow chart of a method for configuring a mode of an RGB substrate disclosed in this application specification;

[0038] Figure 2 This is a flow chart of another method for pattern configuration involving an RGB substrate disclosed in this application specification;

[0039] Figure 3a This is a schematic diagram of a single landing point distribution of a sub-pixel pit disclosed in this application specification;

[0040] Figure 3b This is a schematic diagram of a single landing point distribution of another sub-pixel pit disclosed in this application specification;

[0041] Figure 4 A schematic diagram of the distribution of grid points to be printed of a sub-pixel pit disclosed in this application specification;

[0042] Figure 5 This is a schematic diagram of the distribution of grid points to be printed of another sub-pixel pit disclosed in this application specification;

[0043] Figure 6 This is a schematic structural diagram of an inkjet printer disclosed in this application specification. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0045] In the description of the embodiments of this application, words such as "for example" or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "for example" or "for instance" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "for example" or "for instance" is intended to present the relevant concepts in a concrete manner.

[0046] In the description of the embodiments of the present application, the term "multiple" means two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0047] This manual addresses the configuration of inkjet printer modes for displays, specifically single-, dual-, or multi-nozzle modules, as well as specific printing scenarios involving single or multiple functional layers. Mode selection and adjustment are prone to errors and can be overlooked. Furthermore, these scenarios involve manual manipulation, such as rasterization methods, determining the number of ink droplets to be printed in a sub-pixel pit, and the format of the substrate design. These factors impact both mode configuration efficiency and printing efficiency.

[0048] A print stroke in this specification refers to the length of one print in the X-direction, where the X direction represents the substrate's movement, and the Y direction represents the printer's movement. After completing one print stroke, the printer can move a certain distance in the Y-direction to begin a second print stroke, or it can remain stationary in the Y-direction to perform compensatory printing on sub-pixel pits.

[0049] This specification discloses a method for pattern configuration involving an RGB substrate, such as Figure 1 The mode configuration method includes steps S101-S102.

[0050] S101. Obtain a first identifier and a second identifier of an inkjet printer, where the first identifier is an identifier of the number of nozzle modules, and the second identifier is an identifier of a functional layer printed on a substrate; the substrate is an RGB substrate including multiple types of sub-pixel pits; the functional layer identifier includes a light-emitting layer identifier and an encapsulation layer identifier.

[0051] S012. If the first identifier is a single nozzle module identifier and the light-emitting layer is currently being printed, a separate printing mode is used to perform the printing operation of the substrate; the separate printing mode is that a single nozzle module only prints one type of sub-pixel pit in one stroke, and multiple types of sub-pixel pits are printed in multiple strokes.

[0052] At this time, the appropriate printing mode is automatically selected by identifying the number of nozzle modules of the inkjet printer and the functional layer to be printed. In RGB substrate printing, the functional layers are mainly divided into two categories, one is the light-emitting layer and the other is the encapsulation layer; printing the light-emitting layer requires the inkjet printer to spray ink droplets into various types of sub-pixel pits, and printing the encapsulation layer requires the inkjet printer to spray ink droplets onto the entire substrate (including sub-pixel pit areas and non-sub-pixel pit areas). In addition, a single nozzle module is often set to print the same type of ink droplets. For the light-emitting layer, multiple types of ink droplets need to be printed, such as ink droplets for R sub-pixel pits or ink droplets for B sub-pixel pits; but for the encapsulation layer, only one type of ink droplet is required for the entire substrate. For these reasons, different numbers of nozzle modules and printed functional layers require different printing modes; after the printing mode is set, the inkjet printer system will then complete the subsequent association of the nozzle coordinates with the coordinates of the area to be printed (various types of sub-pixel pits or the entire substrate) to perform subsequent printing operations.

[0053] The above automatic mode selection process not only avoids manual errors, but also improves mode switching efficiency, thereby improving printing efficiency. The number of printhead modules and the identification of the functional layers can be configured in advance, and the configuration parameters can be directly obtained.

[0054] In addition, the RGB substrate in this specification does not only include sub-pixel pits corresponding to R, G and B, but may also include other pixel pits; for example: including a white W sub-pixel pit (to improve brightness), or a yellow Y sub-pixel pit (to improve display effect and reduce power consumption); there is no restriction on this, and this specification uses R, G and B sub-pixel pits as an example for explanation.

[0055] In one example, the mode configuration method also includes: if the first identifier is a single nozzle module identifier and the encapsulation layer is currently being printed, the first simultaneous printing mode is used to perform the printing operation of the substrate; the first simultaneous printing mode is for a single nozzle module to print all types of sub-pixel pits in one stroke.

[0056] At this time, the encapsulation layer is printed, and the entire substrate (sub-pixel pits or non-sub-pixel pits) only needs to be printed in the same pattern; at this time, the simultaneous printing mode can be directly adopted to improve printing efficiency.

[0057] In one example, after performing a printing operation on a substrate in a separate printing mode, the mode configuration method further includes: obtaining a pre-planned number of grids to be printed in a sub-pixel pit, where the number of grids to be printed is the number of ink droplet landing points of an inkjet printer; if the number of grids to be printed in each type of sub-pixel pit is 1, then on the basis of the separate printing mode, a single landing point printing mode is adopted; the single landing point printing mode is a mode in which only one ink droplet landing point is printed in one sub-pixel pit.

[0058] At this point, in addition to the separate printing modes, the drop mode is also selected. Multiple drop modes are more efficient than single drop modes, but after the pixels on the substrate are rasterized, there may only be one grid to be printed in the sub-pixel pit; in this case, multiple drop modes cannot be directly used.

[0059] In the above example, the number of grids to be printed is 1, which means that the number of grids to be printed in each type of sub-pixel pit is 1. In separate printing mode, the three types of sub-pixel pits are rasterized separately. For example, if the sub-pixel pit to be printed is the R sub-pixel pit, the R sub-pixel pit is rasterized first, while the G and B sub-pixel pits are not rasterized. The number of grids to be printed is determined in the R sub-pixel pit. In this mode, rasterization is more flexible, as only a single type of sub-pixel pit needs to be considered.

[0060] In one example, the mode configuration method further includes: if the number of grids to be printed in various types of sub-pixel pits is greater than 1, then a multiple landing point printing mode is adopted on the basis of a separate printing mode; the multiple landing point printing mode prints multiple ink drop landing points for one sub-pixel pit.

[0061] At this time, when the number of grids to be printed in the sub-pixel pit is greater than 1, the multiple landing point printing mode is directly adopted; in this case, the printing efficiency is higher. Figure 4 and Figure 5 As shown, each type of sub-pixel pit has multiple grids to be printed; and two types of grids to be printed are shown. Even if the three types of sub-pixel pits are printed separately, in the separate printing mode, using a multiple landing point printing mode can still improve printing efficiency.

[0062] In one example, the mode configuration method also includes: if the first identifier is an identifier corresponding to multiple nozzle modules, a second simultaneous printing mode is used to perform the printing operation of the substrate; the second simultaneous printing mode is for multiple nozzle modules to print all types of sub-pixel pits in one stroke, and the multiple nozzle modules include two nozzle modules and three nozzle modules; obtaining the number of pre-planned grids to be printed in the sub-pixel pit, and the number of grids to be printed is the number of ink drop landing points of the inkjet printer; if the number of grids to be printed in various types of sub-pixel pits is 1, then on the basis of the second simultaneous printing mode, a single landing point printing mode is used; the single landing point printing mode is for one sub-pixel pit to print only one ink drop landing point.

[0063] At this time, in the case of multiple nozzle modules, the printing efficiency is higher in the simultaneous printing mode; and the drop point printing mode will be selected according to the number of grids to be printed in the sub-pixel pit. Figure 3a As shown, one scenario is that the three types of sub-pixel pits have the same area, the three types of sub-pixel pits are rasterized simultaneously, and each sub-pixel pit contains only one grid to be printed. The other scenario is that the three types of sub-pixel pits have different areas, and after the three types of sub-pixel pits are rasterized simultaneously, each sub-pixel pit contains only one grid to be printed.

[0064] Furthermore, multiple printhead modules will only print in simultaneous mode, which is more efficient than separate printing. The number of printhead modules is generally no greater than the number of sub-pixel pit types. For example, if there are three sub-pixel pits, the maximum number of printhead modules is three. If there are two printhead modules, one will print one type of sub-pixel pit; the other will print the other two types. If there are three printhead modules, the correspondence between printhead modules and sub-pixel pits can be random.

[0065] In one example, the mode configuration method further includes: if the number of grids to be printed in various types of sub-pixel pits is greater than 1, then, based on the second simultaneous printing mode, a multiple landing point printing mode is adopted; the multiple landing point printing mode prints multiple ink drop landing points for one sub-pixel pit.

[0066] At this time, on the basis of the simultaneous printing mode, the use of multiple landing point printing mode can improve the printing efficiency; especially compared with the single landing point mode. Figure 4 and Figure 5 Two distributions of grids to be printed are shown.

[0067] In one example, before obtaining the pre-planned number of grids to be printed in a sub-pixel pit, the pattern configuration method includes: rasterizing the substrate bitmap to obtain an integer number of grids; a sub-pixel pit includes one or more grids, and the grid size is larger than the minimum step distance of the inkjet printer; configuring the landing point of the inkjet printer ink droplet in the grid corresponding to the sub-pixel pit in a preset manner; the preset method includes manually selecting the grid to be printed in the grid corresponding to the sub-pixel pit, and determining the grid to be printed in historical printing data based on the current sub-pixel pit size, the volume of a single drop of ink, and the grid size.

[0068] This section explains how to rasterize a substrate bitmap. The entire substrate must be divided into an integer number of grids, as any grid can potentially be configured as an ink droplet placement location, and the ink droplet placement locations must be complete. The grid size must be larger than the minimum stepping distance of the inkjet printer. If it is smaller, if two adjacent grids are both to be printed, the inkjet printer will not be able to directly print on one of the grids in a single stroke.

[0069] V / F = D, where V is the inkjet printer's X-direction printing speed (substrate motion direction), measured in mm / s; F is the inkjet printing frequency, measured in kHz, representing the number of ink drops ejected per second; and D is the minimum stepping distance, measured in μm. The X-direction size of a single grid cell must be greater than the minimum stepping distance D. A single grid cell has no constraints in the Y-direction; its Y-direction size can be the same as or different from its X-direction size. Generally speaking, the Y-direction size of a single grid cell is smaller than the Y-direction size of the sub-pixel pit.

[0070] In one example, before rasterizing the substrate bitmap to obtain an integer number of grids, the pattern configuration method further includes: identifying pixels to be printed and pixels prohibited from printing in the substrate design drawing, as well as the position coordinates of the prohibited printing pixels; disabling the pixel positions of corresponding positions in the initial substrate bitmap based on the prohibited printing pixels and the position coordinates of the prohibited printing pixels to obtain the substrate bitmap.

[0071] At this point, taking the CAD software format as an example, for the design drawing of a special-shaped product, some pixels are prohibited from printing, while some pixels are required to be printed; among the pixels that need to be printed, the R, G, and B sub-pixel pits all need to be printed. Based on the prohibited printing pixels and the position coordinates of the prohibited printing pixels in the substrate design drawing, the pixel positions at the corresponding positions in the initial substrate bitmap are disabled to obtain the substrate bitmap. The format of the substrate bitmap is a format that can be directly processed by an inkjet printer. This avoids manual participation in the construction of the substrate bitmap, improves the efficiency of the substrate bitmap construction, and prevents human errors.

[0072] It should be noted that one pixel corresponds to R, G, and B sub-pixel pits. After the substrate bitmap is rasterized, any pixel is rasterized; the number of grids in the sub-pixel pits in the pixel needs to be paid attention to. On the one hand, because the areas of the three types of sub-pixel pits are different for R, G, and B sub-pixel pits, on the other hand, if the grid size is too large, there will be no complete grid in the sub-pixel pit, that is, it will be impossible to select the landing position of the ink droplet in the sub-pixel pit. At this time, the rasterization size needs to be adjusted. At least one selectable grid must be ensured in the sub-pixel pit, and after the inkjet printer ejects the ink droplet from the grid, the ink droplet will not overflow from the sub-pixel pit after leveling and drying. Of course, there can also be multiple selectable grids in the sub-pixel pit. At this time, attention should be paid to the distribution of ink droplet landing points; the ink droplet landing point distribution should take into account the ink droplet characteristics and the sub-pixel pit size to ensure that after the ink droplet landing point distribution is set, the ink droplet printing and drying will not have film thickness unevenness and integrity problems (the ink droplets do not merge with each other to form gaps).

[0073] Therefore, in the above example, one of the preset methods is to manually select the grid to be printed in the grid corresponding to the sub-pixel pit; manually select the grid to be printed and distribute the ink drop points in the sub-pixel pit based on experience. Another preset method is to determine the grid to be printed in the historical printing data based on the current sub-pixel pit size, single drop ink volume and grid size; at this time, the historical printing data has the current sub-pixel pit size range, single drop ink volume range and grid size range, and the number and distribution of grids to be printed in these corresponding sub-pixel pits. The historical printing data contains the relationship between the commonly used sub-pixel pit size range, single drop ink volume range, grid size range and the number and distribution of grids to be printed. In actual inkjet printing, the amount of these data is limited and can be constructed in the historical printing data.

[0074] like Figure 4 and Figure 5 As shown, two preset methods can be built into the historical print data, when the sub-pixel pit size range, single drop volume range and grid size range are Figure 4 and Figure 5 If the same as shown, you can directly use Figure 4 and Figure 5 The number and distribution of grids to be printed (position distribution, i.e., ink droplet landing point coordinates) in .

[0075] It should be noted that any nozzle module has a code (such as a number), and any nozzle in the nozzle module also has a code; the coordinate origin of the substrate bitmap is the upper left corner of the substrate bitmap, of course, it can also be any corner of the substrate bitmap, and the coordinates of the pixel and the coordinates of each sub-pixel pit in the pixel are determined in turn; the coordinates of each sub-pixel pit, the coordinates of each pixel and the coordinates of the grid (including the grid to be printed) are the coordinates of the corresponding geometric center point.

[0076] In one example, before rasterizing the substrate bitmap to obtain an integer number of grids, the pattern configuration method further includes: in a single-drop printing mode, performing partitioned printing on the substrate until the ink droplets fill the sub-pixel pits in each partition; obtaining a nozzle combination corresponding to the sub-pixel pit type, so as to establish an association between the coordinates of the sub-pixel pit and the coordinates of the nozzle group in subsequent printing operations; wherein one sub-pixel pit type corresponds to multiple nozzle combinations.

[0077] At this time, a correspondence is established between each type of sub-pixel pit and a variety of nozzle combinations. On the one hand, because in the multiple landing point printing mode, the correspondence between the sub-pixel pit, the multiple ink droplet landing points in the sub-pixel pit, and the nozzle combination under multiple strokes (each printing stroke has a printing nozzle for the sub-pixel pit, and multiple printing strokes constitute the nozzle combination for the sub-pixel pit) is relatively complicated to calculate; while in the single landing point printing mode, only the relationship between the sub-pixel pit and the nozzle group needs to be paid attention to. On the other hand, the above method can be used to measure the film thickness of a single drop of ink and observe the printing effect after the sub-pixel pit is filled, and it can be obtained how many times a sub-pixel pit is printed or how many drops of ink are needed to fill it. All of the above are convenient for subsequent printing planning operations.

[0078] For example, the volume of a fully filled sub-pixel pit is M, and the volume of a single droplet is m. Both parameters allow for a certain degree of error. M / m represents the number of ink droplets in the sub-pixel pit. For example, if the sub-pixel pit is filled with five luminescent layers (i.e., hole injection layer HIL, hole transport layer HTL, luminescent layer EML, electron injection layer EIL, and electron transport layer ETL), and each layer has the same film thickness, the average number of ink droplets printed per luminescent layer is M / 5m. Of course, if the film requirements for each layer vary, the number of droplets printed per layer can be adjusted accordingly.

[0079] Below Figure 2 As an example, the mode configuration in this manual is generally described.

[0080] S201, judging the printing mode according to the number of nozzle modules and the functional layers to be printed.

[0081] At this point, we're primarily concerned with the scenarios of a single printhead module and a light-emitting layer, and a single printhead module and an encapsulation layer. In actual printing, an inkjet printer may only have a single printhead module, which also requires configuration. The configuration modes provided in this manual are applicable to scenarios with single or multiple printhead modules.

[0082] S202: Execute the simultaneous printing mode. The printing efficiency of the simultaneous printing mode is higher than that of the separate printing mode. Generally speaking, if the simultaneous printing mode can be selected, the separate printing mode will not be selected.

[0083] There are two scenarios for simultaneous printing: a single printhead module and the encapsulation layer; and a multi-printhead module. With a multi-printhead module, there's no need to consider the functional layer; both the luminescent layer and the encapsulation layer can be printed simultaneously. Simultaneous printing of the encapsulation layer with multiple printhead modules is more efficient than with a single printhead module.

[0084] S203: Execute separate printing mode for the case of a single nozzle module and a light-emitting layer.

[0085] The sub-pixel pits in the light-emitting layer often have more than one type. Furthermore, a single printhead module generally has only one type of ink path, meaning it can only print one type of ink droplet at a time.

[0086] The selection of the corresponding landing point mode mainly considers the number of grids to be printed in the sub-pixel pit. If the number of grids to be printed in the sub-pixel pit is 1, it is a single landing point mode in S2021 and S2031; of course, S2021 is a simultaneous printing mode, and S2031 is a separate printing mode. If the number of grids to be printed in the sub-pixel pit is greater than 1, it is a multiple landing point mode of S2022 and S2032; the printing efficiency of the multiple landing point mode is higher than that of the single landing point mode; S2022 is based on the simultaneous printing mode, and S2032 is based on the separate printing mode. The distribution of grids to be printed at multiple landing points is as follows Figure 4 and Figure 5 As shown, two different ink droplet landing point distributions are shown.

[0087] It should be noted that the number of grids to be printed in the above-mentioned sub-pixel pit is 1, which means that the number of grids to be printed in all sub-pixel pits in the pixel is 1. In the separate printing mode S203, when the sub-pixel pits are printed separately, each rasterization only needs to consider the sub-pixel pit to be printed, and does not need to consider other sub-pixel pits; at this time, the selection of the grid to be printed (i.e., the ink droplet landing point) in the sub-pixel pit to be printed is more flexible; if the size of the sub-pixel pit is small at this time, there will be only one grid to be printed in the sub-pixel pit to be printed, and the single landing point mode is used; if the size of the sub-pixel pit is large at this time, there will be multiple grids to be printed in the sub-pixel pit to be printed, and the multiple landing point mode is used.

[0088] In addition, in the simultaneous printing mode in S202, the number of grids to be printed is 1, and there are two cases. Figure 3a As shown, one is that the areas of multiple types of sub-pixel pits are the same, and the areas of multiple types of sub-pixel pits are small, and each sub-pixel pit has only one grid to be printed; for example: the RGB pixel pit pattern in the LCD screen, or the RGBW pixel pit pattern in the LCD screen. Figure 3bAs shown, another scenario involves multiple sub-pixel pit types with different areas, but each sub-pixel pit is relatively small, and each sub-pixel pit contains only one grid to be printed. In this case, simultaneous rasterization of these sub-pixel pit types requires constant adjustment of raster parameters to ensure that each type contains at least one grid to be printed. This is a complex process. Rasterization determines the coordinates of the inkjet printer's ink droplets.

[0089] This specification discloses an inkjet printer, which includes a processor, a memory, a user interface, and a network interface. The memory is used to store instructions, and the user interface and the network interface are both used to communicate with other devices. The processor is used to execute the instructions stored in the memory to enable the defect detection device to execute the following instructions:

[0090] Obtain a first identifier and a second identifier of the inkjet printer, where the first identifier is an identifier of the number of printhead modules, and the second identifier is an identifier of a functional layer printed on a substrate; the substrate is an RGB substrate including multiple types of sub-pixel pits; the functional layer identifiers include a light-emitting layer identifier and an encapsulation layer identifier;

[0091] If the first identifier is a single nozzle module identifier and the light-emitting layer is currently being printed, a separate printing mode is used to perform the printing operation of the substrate; the separate printing mode is that a single nozzle module only prints one type of sub-pixel pit in one stroke, and multiple types of sub-pixel pits are printed in multiple strokes.

[0092] In one example, the mode configuration method also includes: if the first identifier is a single nozzle module identifier and the encapsulation layer is currently being printed, the first simultaneous printing mode is used to perform the printing operation of the substrate; the first simultaneous printing mode is for a single nozzle module to print all types of sub-pixel pits in one stroke.

[0093] In one example, after performing a printing operation on a substrate in a separate printing mode, the mode configuration method further includes: obtaining a pre-planned number of grids to be printed in a sub-pixel pit, where the number of grids to be printed is the number of ink droplet landing points of an inkjet printer; if the number of grids to be printed in each type of sub-pixel pit is 1, then on the basis of the separate printing mode, a single landing point printing mode is adopted; the single landing point printing mode is a mode in which only one ink droplet landing point is printed in one sub-pixel pit.

[0094] In one example, the mode configuration method further includes: if the number of grids to be printed in various types of sub-pixel pits is greater than 1, then a multiple landing point printing mode is adopted on the basis of a separate printing mode; the multiple landing point printing mode prints multiple ink drop landing points for one sub-pixel pit.

[0095] In one example, the mode configuration method also includes: if the first identifier is an identifier corresponding to multiple nozzle modules, a second simultaneous printing mode is used to perform the printing operation of the substrate; the second simultaneous printing mode is for multiple nozzle modules to print all types of sub-pixel pits in one stroke, and the multiple nozzle modules include two nozzle modules and three nozzle modules; obtaining the number of pre-planned grids to be printed in the sub-pixel pit, and the number of grids to be printed is the number of ink drop landing points of the inkjet printer; if the number of grids to be printed in various types of sub-pixel pits is 1, then on the basis of the second simultaneous printing mode, a single landing point printing mode is used; the single landing point printing mode is for one sub-pixel pit to print only one ink drop landing point.

[0096] In one example, the mode configuration method further includes: if the number of grids to be printed in various types of sub-pixel pits is greater than 1, then, based on the second simultaneous printing mode, a multiple landing point printing mode is adopted; the multiple landing point printing mode prints multiple ink drop landing points for one sub-pixel pit.

[0097] In one example, before obtaining the pre-planned number of grids to be printed in a sub-pixel pit, the pattern configuration method includes: rasterizing the substrate bitmap to obtain an integer number of grids; a sub-pixel pit includes one or more grids, and the grid size is larger than the minimum step distance of the inkjet printer; configuring the landing point of the inkjet printer ink droplet in the grid corresponding to the sub-pixel pit in a preset manner; the preset method includes manually selecting the grid to be printed in the grid corresponding to the sub-pixel pit, and determining the grid to be printed in historical printing data based on the current sub-pixel pit size, the volume of a single drop of ink, and the grid size.

[0098] In one example, before rasterizing the substrate bitmap to obtain an integer number of grids, the pattern configuration method further includes: identifying pixels to be printed and pixels prohibited from printing in the substrate design drawing, as well as the position coordinates of the prohibited printing pixels; disabling the pixel positions of corresponding positions in the initial substrate bitmap based on the prohibited printing pixels and the position coordinates of the prohibited printing pixels to obtain the substrate bitmap.

[0099] In one example, before rasterizing the substrate bitmap to obtain an integer number of grids, the pattern configuration method further includes: in a single-drop printing mode, performing partitioned printing on the substrate until the ink droplets fill the sub-pixel pits in each partition; obtaining a nozzle combination corresponding to the sub-pixel pit type, so as to establish an association between the coordinates of the sub-pixel pit and the coordinates of the nozzle group in subsequent printing operations; wherein one sub-pixel pit type corresponds to multiple nozzle combinations.

[0100] It should be noted that the above embodiments provide devices that implement their functions using only the division of the above functional modules as examples. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiments are based on the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0101] The specification also discloses a computer-readable storage medium, which stores instructions. When the instructions are executed, the above method is executed.

[0102] This embodiment also discloses an electronic device, which may be an inkjet printer, to perform the above method. Figure 6 The electronic device may include: at least one processor 601 , at least one communication bus 602 , a display 603 , a network interface 604 , and at least one memory 605 .

[0103] The communication bus 602 is used to implement the connection and communication between these components.

[0104] The display 603 may include a display screen (Display) and a camera (Camera).

[0105] The network interface 604 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0106] The processor 601 may include one or more processing cores. The processor 601 utilizes various interfaces and circuits to connect various components within the server. It executes instructions, programs, code sets, or instruction sets stored in the memory 605, as well as accesses data stored in the memory 605, to perform various server functions and process data. Optionally, the processor 601 may be implemented using at least one hardware form selected from the group consisting of a digital signal processing (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA). The processor 601 may integrate one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), and a modem. The CPU primarily processes the operating system, user interface, and application programs; the GPU is responsible for rendering and drawing the content displayed on the display; and the modem handles wireless communications. It is understood that the modem may not be integrated into the processor 601 and may be implemented as a separate chip.

[0107] Among them, the memory 605 may include a random access memory 605 (Random Access Memory, RAM), and may also include a read-only memory 605 (Read-Only Memory). Optionally, the memory 605 includes a non-transitory computer-readable storage medium. The memory 605 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 605 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area may store data involved in the above-mentioned various method embodiments, etc. The memory 605 may also be at least one storage device located away from the aforementioned processor 601. As shown in the figure, the memory 605 as a computer storage medium may include an operating system, a network communication module, and application programs of a display module.

[0108] exist Figure 6In the electronic device shown, the display 603 is mainly used to provide an input interface for the user and obtain data input by the user; and the processor 601 can be used to call the application stored in the memory 605. When executed by one or more processors 601, the electronic device executes one or more methods in the above embodiments.

[0109] It should be noted that for the aforementioned method embodiments, for simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required for this application.

[0110] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0111] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of units, which is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interface, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0112] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0113] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0114] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory 605. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a memory 605 and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned memory 605 includes various media that can store program code, such as a USB flash drive, a mobile hard drive, a magnetic disk, or an optical disk.

[0115] The above are merely exemplary embodiments of the present disclosure and are not intended to limit the scope of the present disclosure. That is, any equivalent changes and modifications made in accordance with the teachings of the present disclosure are still within the scope of the present disclosure. After considering the disclosure of the specification and the truth of practice, those skilled in the art will easily think of other embodiments of the present disclosure. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not recorded in the present disclosure. The description and examples are to be regarded as exemplary only, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. A method for pattern configuration of an RGB substrate, characterized in that: The mode configuration method includes: Obtain a first identifier and a second identifier of the inkjet printer, where the first identifier is an identifier of the number of printhead modules, and the second identifier is an identifier of a functional layer printed on a substrate; the substrate is an RGB substrate including multiple types of sub-pixel pits; the functional layer identifiers include a light-emitting layer identifier and an encapsulation layer identifier; If the first identifier is a single nozzle module identifier and the light-emitting layer is currently being printed, a separate printing mode is used to perform the printing operation of the substrate; the separate printing mode is that a single nozzle module only prints one type of sub-pixel pit in one stroke, and multiple types of sub-pixel pits are printed in multiple strokes.

2. The mode configuration method according to claim 1, characterized in that: The mode configuration method further includes: If the first identifier is a single nozzle module identifier and the encapsulation layer is currently being printed, the first simultaneous printing mode is used to perform the printing operation of the substrate; the first simultaneous printing mode is that the single nozzle module prints all types of sub-pixel pits in one stroke.

3. The mode configuration method according to claim 1, characterized in that: After performing the printing operation of the substrate in the separate printing mode, the mode configuration method further includes: Obtaining the number of grids to be printed that are pre-planned in the sub-pixel pit, where the number of grids to be printed is the number of ink droplet landing points of the inkjet printer; If the number of grids to be printed in each type of sub-pixel pit is 1, a single drop printing mode is adopted based on the separate printing mode; the single drop printing mode is that only one ink droplet is printed in one sub-pixel pit.

4. The mode configuration method according to claim 3, characterized in that: The mode configuration method further includes: If the number of grids to be printed in each type of sub-pixel pit is greater than 1, a multiple landing point printing mode is adopted based on the separate printing mode; the multiple landing point printing mode prints multiple ink droplet landing points in one sub-pixel pit.

5. The mode configuration method according to claim 1, characterized in that: The mode configuration method further includes: If the first identifier is an identifier corresponding to multiple nozzle modules, a second simultaneous printing mode is used to perform a printing operation on the substrate; the second simultaneous printing mode is that the multiple nozzle modules print all types of sub-pixel pits in one stroke, and the multiple nozzle modules include two nozzle modules and three nozzle modules; Obtaining the number of grids to be printed that are pre-planned in the sub-pixel pit, where the number of grids to be printed is the number of ink droplet landing points of the inkjet printer; If the number of grids to be printed in each type of sub-pixel pit is 1, a single drop printing mode is adopted based on the second simultaneous printing mode; the single drop printing mode is that only one ink droplet is printed in one sub-pixel pit.

6. The mode configuration method according to claim 5, characterized in that: The mode configuration method further includes: If the number of grids to be printed in each type of sub-pixel pit is greater than 1, a multiple landing point printing mode is adopted based on the second simultaneous printing mode; the multiple landing point printing mode prints multiple ink droplet landing points in one sub-pixel pit.

7. The mode configuration method according to claim 3 or 5, characterized in that: Before obtaining the number of grids to be printed that are pre-planned in the sub-pixel pit, the mode configuration method includes: The substrate bitmap is rasterized to obtain an integer number of grids; a sub-pixel pit includes one or more grids, and the grid size is larger than the minimum step distance of the inkjet printer; The landing points of ink droplets of the inkjet printer are configured in a preset manner in the grid corresponding to the sub-pixel pit; the preset manner includes a method of manually selecting the grid to be printed in the grid corresponding to the sub-pixel pit, and a method of determining the grid to be printed in historical printing data based on the current sub-pixel pit size, the volume of a single drop of ink, and the grid size.

8. The mode configuration method according to claim 7, characterized in that: Before rasterizing the substrate bitmap to obtain an integer number of grids, the pattern configuration method further includes: Identifying pixels to be printed and pixels prohibited from printing in a substrate design drawing, as well as position coordinates of the pixels prohibited from printing; According to the printing-forbidden pixels and the position coordinates of the printing-forbidden pixels, pixel positions at corresponding positions in the initial substrate bitmap are disabled to obtain a substrate bitmap.

9. The mode configuration method according to claim 7, characterized in that: Before rasterizing the substrate bitmap to obtain an integer number of grids, the pattern configuration method further includes: In single-drop printing mode, the substrate is printed in sections until the ink droplets fill the sub-pixel pits in each section. The nozzle combination corresponding to the sub-pixel pit type is obtained so as to associate the coordinates of the sub-pixel pit with the coordinates of the nozzle group in subsequent printing operations; wherein one sub-pixel pit type corresponds to multiple nozzle combinations.

10. An inkjet printer, characterized in that: The inkjet printer includes a processor, a memory, a user interface, and a network interface. The memory is used to store instructions. The user interface and the network interface are both used to communicate with other devices. The processor is used to execute the instructions stored in the memory so that the defect detection device executes the following instructions: Obtain a first identifier and a second identifier of the inkjet printer, where the first identifier is an identifier of the number of printhead modules, and the second identifier is an identifier of a functional layer printed on a substrate; the substrate is an RGB substrate including multiple types of sub-pixel pits; the functional layer identifiers include a light-emitting layer identifier and an encapsulation layer identifier; If the first identifier is a single nozzle module identifier and the light-emitting layer is currently being printed, a separate printing mode is used to perform the printing operation of the substrate; the separate printing mode is that a single nozzle module only prints one type of sub-pixel pit in one stroke, and multiple types of sub-pixel pits are printed in multiple strokes.

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