Method for processing thickness of sub-pixel pit film layer and ink-jet printer

Abstract

The invention relates to the technical field of ink-jet printing of a display screen, and discloses a sub-pixel pit film layer thickness processing method and an ink-jet printer, and the method comprises the steps: obtaining an ink drop dripping point range in a first sub-pixel pit, enabling the distance between an ink drop dripping point located at the edge in the ink drop dripping point range and the edge of the first sub-pixel pit to be larger than the radius of the spread ink drop, and enabling the ink drop dripping point to be larger than the radius of the spread ink drop; the first sub-pixel pit is any one sub-pixel pit in the substrate bitmap; obtaining an initial spray hole group matched with the first sub-pixel pit; the initial spraying hole group comprises spraying hole numbers of spraying holes and the number of ink droplets sprayed by the spraying holes, and one spraying hole corresponds to one ink droplet volume; a first target spraying hole set is constructed, the first target spraying hole set enables the film layer thickness of the first sub-pixel pit to be within the target film layer thickness range, the first target spraying hole set comprises the spraying hole number of spraying holes and the number of ink droplets sprayed by the spraying holes, and the Y-axis direction is the moving direction of a spraying head module in the ink-jet printer. The method and the device can be suitable for a scene with relatively high thickness uniformity of a sub-pixel pit film layer.

Description

Technical Field

[0001] This application relates to the field of inkjet printing technology for displays, specifically to a method for processing the thickness of subpixel pit film layers and an inkjet printer. Background Technology

[0002] Currently, the number of ink droplets to be printed is determined based on the thickness of the film layer to be printed, with the placement of droplets planned within the sub-pixel pits in the substrate bitmap. This involves first converting the film layer thickness into the total volume of the ink droplets to be printed, and then using the average volume of ink droplets ejected from the nozzles in the printhead module as the basis for calculation to determine the number of ink droplets to be printed.

[0003] However, inkjet printer printhead modules often have a large number of nozzles; these nozzles themselves have inherent errors, resulting in inconsistent droplet volumes. The method described above, which uses the average droplet volume for droplet placement planning, limits the uniformity of the sub-pixel pit film thickness; thus, it is unsuitable for scenarios requiring high film thickness uniformity (e.g., sub-pixel pit film thickness uniformity ≤ 5%).

[0004] Therefore, a method for processing the thickness of the subpixel pit film layer and an inkjet printer are needed to solve the above problems. Summary of the Invention

[0005] This application provides a method for processing the thickness of the sub-pixel pit film layer and an inkjet printer, which can be applied to scenarios where the thickness uniformity of the sub-pixel pit film layer is high. By considering the volume of a single ink droplet corresponding to the nozzle rather than the average volume of ink droplets in the entire printhead module, the uniformity of the thickness of the sub-pixel pit film layer is improved.

[0006] The first aspect of this application discloses a method for processing the film thickness of a sub-pixel pit. The method includes: obtaining the droplet landing point range in a first sub-pixel pit, wherein the distance between the droplet landing point located at the edge of the droplet landing point range and the edge of the first sub-pixel pit is greater than the radius of the droplet spreading, and the first sub-pixel pit is any sub-pixel pit in a substrate bitmap; obtaining an initial nozzle group matching the first sub-pixel pit; the initial nozzle group includes the nozzle number of the nozzle and the number of ink droplets ejected by the nozzle, with one nozzle corresponding to one droplet volume; constructing a first target nozzle group; wherein the first target nozzle group is a combination of nozzles obtained by matching nozzles from the initial nozzle group for each row of landing points in the droplet landing point range in the Y-axis direction, and the first target nozzle group ensures that the film thickness of the first sub-pixel pit is within the target film thickness range, and the first target nozzle group includes the nozzle number of the nozzle and the number of ink droplets ejected by the nozzle, and the Y-axis direction is the movement direction of the printhead module in an inkjet printer.

[0007] In the above scheme, the aim is to improve the uniformity of the sub-pixel pit film thickness by combining the multiple droplet volumes corresponding to multiple nozzles within the droplet landing area. The droplet landing area is set to ensure that droplets do not print outside the sub-pixel pit (i.e., to prevent droplet overflow defects). The total droplet volume obtained by combining multiple droplet volumes ensures that the film thickness after drying within the sub-pixel pit is within the target film thickness range. Furthermore, by setting the droplet landing area and the total droplet volume, it is guaranteed that the sub-pixel pit is filled and that droplets do not overflow. In this state of a filled sub-pixel pit, the uniformity of droplet distribution within the sub-pixel pit is not a primary concern; that is, the distribution of droplets within the sub-pixel pit does not need to be considered.

[0008] In one possible implementation, the initial nozzle group includes a first nozzle and a second nozzle, wherein the nozzle number of the first nozzle is less than the nozzle number of the second nozzle, and the first nozzle and the second nozzle are adjacent; the first nozzle ejects a first volume of ink droplets, and the second nozzle ejects a second volume of ink droplets, wherein the X-axis range of the ink droplet landing point includes a first number of ink droplet landing points; the construction of the first target nozzle group specifically includes: constructing a first target nozzle group, wherein the first target nozzle group includes the first nozzle ejecting a first number of ink droplets and the second nozzle ejecting a second number of ink droplets; wherein the second number is less than or equal to the first number.

[0009] The above scheme discloses a method for constructing the first target nozzle group. Matching is performed sequentially from the initial nozzle group according to nozzle number, prioritizing nozzles with smaller numbers (smallest Y-axis coordinate) for matching. Furthermore, when matching the first nozzle with the smaller number, all droplet landing points within the X-axis range (i.e., the first number of droplet landing points) are planned first, and then landing point planning is performed for the adjacent second nozzle, resulting in high efficiency. This method of constructing the first target nozzle group is not only suitable for scenarios with high requirements for sub-pixel pit thickness uniformity, but also boasts high construction efficiency.

[0010] In one possible implementation, after constructing the first target nozzle group, the processing method further includes: when the first nozzle and the second nozzle match the same droplet landing row in the droplet landing range, the landing row is located at the middle position of the Y-axis of the droplet landing range; when the first nozzle and the second nozzle match different droplet landing rows in the droplet landing range, the droplet landing row matched by the first nozzle and the droplet landing row matched by the second nozzle are not adjacent.

[0011] The above solution aims to disclose a droplet distribution method within the droplet landing range. As can be seen from the above solution, the solution in this specification does not require planning of the droplet distribution; however, in scenarios with higher requirements for sub-pixel pit film thickness (e.g., sub-pixel pit film thickness uniformity ≤5% without droplet distribution planning, but ≤4% after droplet distribution planning), the droplet distribution within the droplet landing valve can also be planned; this is not a limitation. In other words, sub-pixel pit film thickness uniformity is slightly better after planning the droplet distribution within the droplet landing range.

[0012] In one possible implementation, the initial nozzle group includes a third nozzle and a fourth nozzle, wherein the nozzle number of the third nozzle is less than the nozzle number of the fourth nozzle, and the third nozzle is adjacent to the fourth nozzle; the third nozzle ejects a third volume of ink droplets, and the fourth nozzle ejects a fourth volume of ink droplets, wherein the X-axis range of the ink droplet landing points includes a third number of ink droplet landing points; the construction of the first target nozzle group specifically includes: constructing the first target nozzle group, wherein the first target nozzle group is determined from the number matrix of ink droplets ejected by the third nozzle and the fourth nozzle, the number matrix being composed of a first number group and a second number group; wherein the first number group is the set of the number of ink droplets ejected by the third nozzle in the X-axis direction, the second number group is the set of the number of ink droplets ejected by the fourth nozzle in the X-axis direction, and the number of ink droplets in the first number group is greater than or equal to 0 and less than the third number, and the number of ink droplets in the second number group is greater than or equal to 0 and less than or equal to the third number.

[0013] The above scheme aims to disclose a method for constructing the first target nozzle group. This scheme is not only applicable to scenarios with higher requirements for sub-pixel pit film thickness (e.g., sub-pixel pit film thickness uniformity ≤4%, ≤3%, or ≤2%, where the sub-pixel pit film thickness uniformity ratio is only used as an example for ease of understanding), but also addresses the possibility of not being able to obtain the target nozzle group in the above scheme where all droplet landing points on the X-axis range are planned first (e.g., the uniformity of sub-pixel pit film thickness is converted into the total droplet volume, taking ±3% as an example; a total droplet volume of 50PL requires a droplet volume fluctuation range of ±1.5PL; when the minimum droplet volume of a single nozzle is 4PL and the droplet volume in the current sub-pixel pit is already 48PL, it becomes impossible to determine the last suitable nozzle, i.e., the target nozzle group cannot be matched).

[0014] In one possible implementation, the first target nozzle group is determined from the number matrix of ink droplets ejected by the third nozzle and the fourth nozzle, specifically including: determining the first target nozzle group from the number matrix of ink droplets ejected by the third nozzle and the fourth nozzle in ascending order of the number of ink droplets in the first number group.

[0015] The above scheme aims to disclose a depth-first matching strategy for the third nozzle group when constructing a target nozzle group. The nozzle number of the third nozzle is less than that of the fourth nozzle, and the first quantity group corresponding to the third nozzle is used for matching first. For example, if the number of landing points of the third nozzle is 0, then it is (0, N), where N is the number of landing points of the fourth nozzle, which is 0, 1, 2, ..., and N is at most the maximum number of landing point rows in the ink droplet landing point range (i.e., the maximum number of landing points in the X-axis direction within the ink droplet landing point range). The matching proceeds sequentially as (1, N), (2, N) ... (N-1, N) until the target nozzle group is matched. This method balances matching efficiency and accuracy (i.e., it meets the requirements of scenarios with higher sub-pixel pit film thickness).

[0016] In one possible implementation, the substrate bitmap includes a first sub-pixel pit, a second sub-pixel pit, and a third sub-pixel pit. A second target nozzle group ensures the film thickness of the second sub-pixel pit is within the target film thickness range, and a third target nozzle group ensures the film thickness of the third sub-pixel pit is within the target film thickness range. The number of nozzles in the second target nozzle group is less than the number of nozzles in the third target nozzle group. Constructing the first target nozzle group specifically includes: if the first target nozzle group cannot be determined in the initial nozzle group corresponding to the first sub-pixel pit, then using the second target nozzle group as a reference, matching the nozzles in the second target nozzle group with the first sub-pixel pit; wherein the first sub-pixel pit, the second sub-pixel pit, and the third sub-pixel pit are of the same type; constructing the first target nozzle group, where the nozzle number of the nozzles in the first target nozzle group is the same as the nozzle number of the nozzles in the second target nozzle group, and the number of ink droplets ejected by the nozzles in the first target nozzle group is the same as the number of ink droplets ejected by the nozzles in the second target nozzle group.

[0017] The above scheme aims to disclose a method for constructing the first target nozzle group. It is applicable not only to scenarios with higher requirements for sub-pixel pit film thickness (e.g., sub-pixel pit film thickness uniformity ≤4%, ≤3%, or ≤2%, where the uniformity ratio is only used as an example for ease of understanding), but also to situations where the target nozzle group cannot be determined for the initial nozzle group corresponding to the sub-pixel pit. A highly efficient solution is provided after considering these scenarios. By finding sub-pixel pits that have already matched the target nozzle group, and selecting a target nozzle group with fewer nozzles as a reference, the printhead module is moved so that the nozzles in this target nozzle group with fewer nozzles match the first sub-pixel pit. This method minimizes the number of times the nozzle module is moved, i.e., minimizes the number of additional print passes; thus, the matching efficiency is high.

[0018] In one possible implementation, the nozzles in the first target nozzle group consist of a fifth nozzle and a sixth nozzle, wherein the fifth nozzle is a nozzle in the initial nozzle group, determined by the same nozzles in the initial nozzle group and the second target nozzle group; and the sixth nozzle is a supplementary nozzle, determined by the nozzles in the second target nozzle group other than the fifth nozzle.

[0019] The above scheme aims to disclose a nozzle completion method for constructing a target nozzle group after selecting a target nozzle group with a smaller number of nozzles as a reference. That is, although the nozzles in the initial nozzle group corresponding to the first sub-pixel pit cannot determine the target nozzle group, it can be determined whether there are nozzles in the initial nozzle group that are identical to those in the second target nozzle group (the target nozzle group with a smaller number of nozzles). If identical nozzles exist, it is only necessary to complete the missing nozzles in the first target nozzle group; these missing nozzles are those that exist in the second target nozzle group but not in the first target nozzle group. Of course, if there are no identical nozzles in the initial nozzle group that are identical to those in the second target nozzle group, then all nozzles in the second target nozzle group can be directly used as nozzles in the first target nozzle group, which can be called a complete nozzle completion operation. It should be noted that the above completion operation includes not only the nozzles but also the number of ink droplets ejected by the nozzles.

[0020] In one possible implementation, the first sub-pixel pit is of any one of the following types: R sub-pixel pit, G sub-pixel pit, and B sub-pixel pit, and the type of sub-pixel pit corresponds to the target film thickness range of the sub-pixel pit.

[0021] The above scheme aims to illustrate common types of subpixel pits on a substrate. Generally, different types of pits have different dimensions (length and width), meaning that for the same film thickness, different types of pits require different total droplet volumes. Therefore, when matching target nozzle groups for subpixel pits, the type of subpixel pit needs to be considered. If multiple types of subpixel pits have the same size, the type of subpixel pit can be considered, or it can be disregarded.

[0022] In one possible implementation, the ink droplet landing range includes an X-axis range and a Y-axis range; wherein, the X-axis range includes multiple ink droplet landing points along the X-axis, and the Y-axis range includes intervals along the Y-axis; the X-axis direction is the printing direction of the printhead module in the inkjet printer; the distance between the ink droplet landing point located at the edge of the ink droplet landing range and the edge of the first sub-pixel pit is greater than the radius of the ink droplet spreading, specifically including: the distance between the ink droplet landing point located at the edge of the ink droplet landing range along the X-axis and the edge of the first sub-pixel pit along the X-axis is greater than the radius of the ink droplet spreading; and the distance between the ink droplet landing point located at the edge of the ink droplet landing range along the Y-axis and the edge of the first sub-pixel pit along the Y-axis is greater than the radius of the ink droplet spreading.

[0023] The above scheme aims to disclose the method for setting the ink droplet landing range. The number of ink droplet landing points in the X-axis direction is the number of grids located in the X-axis direction within the ink droplet landing range of the sub-pixel pit after the substrate bitmap is rasterized. The Y-axis direction is the direction for matching the nozzle with the ink droplet landing range. Since the requirements for the ink droplet landing distribution in this specification are relatively low, it is sufficient that the Y-axis coordinate of the nozzle is within the ink droplet landing range; it is not necessary for the Y-axis coordinate of the nozzle to also be within the grid.

[0024] The second aspect of this application discloses an inkjet printer, including 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 to cause the inkjet printer to perform the following instructions: Obtain the range of ink droplet landing points in the first sub-pixel pit. The distance between the ink droplet landing point located at the edge of the ink droplet landing point range and the edge of the first sub-pixel pit is greater than the radius of the ink droplet spreading. The first sub-pixel pit is any sub-pixel pit in the substrate bitmap. Obtain the initial nozzle group matching the first sub-pixel pit; the initial nozzle group includes the nozzle number and the number of ink droplets ejected by the nozzle, with one nozzle corresponding to one ink droplet volume; Construct a first target nozzle group; wherein, the first target nozzle group is a combination of nozzles obtained by matching nozzles from the initial nozzle group for each row of droplet landing points in the Y-axis direction, and the first target nozzle group ensures that the film thickness of the first sub-pixel pit is within the target film thickness range, and the first target nozzle group includes the nozzle number and the number of ink droplets ejected by the nozzle, and the Y-axis direction is the movement direction of the printhead module in the inkjet printer.

[0025] The beneficial effects of this application include: By combining multiple droplet volumes corresponding to multiple nozzles within the droplet landing area, the uniformity of the sub-pixel pit film thickness is improved. The droplet landing area is set to ensure that droplets do not print outside the sub-pixel pit (i.e., to prevent droplet overflow defects). The total droplet volume obtained by combining multiple droplet volumes ensures that the film thickness after drying within the sub-pixel pit is within the target film thickness range. Furthermore, by setting the droplet landing area and total droplet volume, it is guaranteed that the sub-pixel pit is filled and that droplets do not overflow. In this state of a filled sub-pixel pit, the uniformity of droplet distribution within the sub-pixel pit is not a primary concern; that is, the distribution of droplets within the sub-pixel pit does not need to be considered. Matching is performed sequentially from the initial nozzle group according to nozzle number, prioritizing nozzles with smaller numbers (smallest Y-axis coordinate) for matching. Furthermore, when matching the first nozzle with the smaller number, all droplet landing points within the X-axis range are planned first (i.e., the first number of droplet landing points), and then landing point planning is performed for the adjacent second nozzle, resulting in high efficiency. This method of constructing the first target nozzle group is not only suitable for scenarios with high requirements for sub-pixel pit thickness uniformity, but also boasts high construction efficiency. The solution in this specification does not require planning of the droplet distribution; however, in some scenarios where the thickness of the sub-pixel pit film layer is more critical, the droplet distribution within the ink droplet valve can be planned; there are no limitations on this. This approach is not only applicable to scenarios with higher requirements for the thickness of the sub-pixel pit film layer, but also may fail to obtain the target nozzle group in the above-mentioned scheme where the first nozzle is prioritized to plan all droplet landing points within the X-axis range. A depth-first matching strategy is adopted for the third nozzle group. Since the nozzle number of the third nozzle is less than that of the fourth nozzle, the first number group corresponding to the third nozzle is used for matching first. For example, if the number of droplets from the third nozzle is 0, then it is (0, N), where N is the number of droplets from the fourth nozzle, which is 0, 1, 2, ..., and N is at most the maximum number of droplet rows in the droplet droplet range (i.e., the maximum number of droplets in the X-axis direction within the droplet droplet droplet range). The matching proceeds sequentially as (1, N), (2, N) ... (N-1, N) until the target nozzle group is matched. This method balances matching efficiency and accuracy (i.e., it meets the requirements of scenarios with higher sub-pixel pit film thickness). This approach is not only applicable to scenarios requiring higher sub-pixel pit film thickness, but also addresses situations where the target nozzle group cannot be determined for the initial nozzle group corresponding to the sub-pixel pit. It offers a highly efficient solution by finding sub-pixel pits that have already matched the target nozzle group and selecting a target nozzle group with fewer nozzles as a reference. The printhead module is moved so that the nozzles in this target nozzle group with fewer nozzles match the first sub-pixel pit. This method minimizes the number of nozzle module movements, resulting in the fewest additional print passes and high matching efficiency. After selecting a target nozzle group with fewer nozzles as a reference, a nozzle completion scheme is constructed for the target nozzle group. That is, although the nozzles in the initial nozzle group corresponding to the first sub-pixel pit cannot determine the target nozzle group, it can be determined whether there are any nozzles in the initial nozzle group that are identical to those in the second target nozzle group (the target nozzle group with fewer nozzles). If identical nozzles exist, then only the missing nozzles need to be completed in the first target nozzle group; these missing nozzles are those that exist in the second target nozzle group but not in the first target nozzle group. Of course, if there are no identical nozzles in the initial nozzle group that are identical to those in the second target nozzle group, then all the nozzles in the second target nozzle group can be directly used as nozzles in the first target nozzle group; this can be called a complete nozzle completion operation. The number of ink droplet landing points in the X-axis direction is the number of grids located in the X-axis direction within the ink droplet landing point range in the sub-pixel pit after the substrate bitmap is rasterized. The Y-axis direction is the direction for matching the nozzle with the ink droplet landing point range. Since the requirements for the ink droplet landing point distribution are low in the solution of this specification, it is only necessary for the Y-axis coordinate of the nozzle to be within the ink droplet landing point range, and it is not necessary for the Y-axis coordinate of the nozzle to also be within the grid. Attached Figure Description

[0026] Figure 1 This is a schematic flowchart of a method for processing the thickness of a sub-pixel pit film layer disclosed in this application specification; Figure 2 This is a schematic diagram of the ink droplet landing point range of a sub-pixel pit disclosed in this application specification; Figure 3 This is a schematic diagram of the ink droplet landing point range of another type of sub-pixel pit disclosed in this application specification; Figure 4 This is a schematic diagram of the nozzle matching ink droplet landing point range disclosed in this application specification; Figure 5 This is a schematic diagram of another nozzle matching ink droplet landing point range disclosed in this application specification; Figure 6 This is a schematic diagram of the structure of an inkjet printer disclosed in this application specification. Detailed Implementation

[0027] 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 with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0028] In the description of the embodiments of this application, the words "for example" or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design that is described as "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design options. Rather, the use of the words "for example" or "for instance" is intended to present the relevant concepts in a specific manner.

[0029] In the description of the embodiments of this application, the term "multiple" means two or more. For example, multiple systems means two or more systems, and multiple screen terminals means two or more screen terminals. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0030] This specification discloses a method for processing the thickness of the sub-pixel pit film layer, such as... Figure 1 As shown. The processing method includes steps S101-S103.

[0031] Step S101: Obtain the range of ink droplet landing points in the first sub-pixel pit. The distance between the ink droplet landing point located at the edge of the ink droplet landing point range and the edge of the first sub-pixel pit is greater than the radius of the ink droplet spreading. The first sub-pixel pit is any sub-pixel pit in the substrate bitmap.

[0032] Step S102: Obtain the initial nozzle group matching the first sub-pixel pit; the initial nozzle group includes the nozzle number and the number of ink droplets ejected by the nozzle, with one nozzle corresponding to one ink droplet volume.

[0033] Step S103: Construct a first target nozzle group; wherein, the first target nozzle group is a combination of nozzles obtained by matching nozzles from the initial nozzle group for each row of droplet landing points in the Y-axis direction, and the first target nozzle group ensures that the film thickness of the first sub-pixel pit is within the target film thickness range, and the first target nozzle group includes the nozzle number and the number of ink droplets ejected by the nozzle, and the Y-axis direction is the movement direction of the printhead module in the inkjet printer.

[0034] In the above example, the setting of the droplet landing range ensures that the droplets will not print outside the sub-pixel pit (i.e., prevent droplet overflow defects); and the total droplet volume obtained by combining the volumes of multiple droplets ensures that the film thickness after drying in the sub-pixel pit is within the target film thickness range. Furthermore, by setting the droplet landing range and the total droplet volume, it can be ensured that the sub-pixel pit is filled and that the droplets do not overflow outside the sub-pixel pit. At this point, whether the droplets are evenly distributed within the sub-pixel pit is not a primary concern; that is, the distribution of droplets within the sub-pixel pit does not need to be considered.

[0035] Furthermore, the nozzles matched to the droplet landing range are generally those that are not disabled, meaning the parameters such as the droplet shape ejected by the nozzles meet the requirements. Matching the nozzle to the droplet landing range is done along the Y-axis; the nozzle's Y-axis coordinate (the coordinates of the nozzle's center point, i.e., the coordinates of the droplet landing center) is within the droplet landing range. The initial nozzle group is a collection of all matched nozzles, which needs to be combined based on the droplet volume of the nozzles to obtain the final target nozzle group. The aforementioned droplet spreading radius can be the average droplet spreading radius in the printhead module. After the substrate bitmap is rasterized, the droplets within the aforementioned landing range can be within the raster or between two raster grids.

[0036] The nozzle numbers mentioned above are obtained by sorting the nozzles in the printhead module of the inkjet printer along the Y-axis and assigning numbers to the nozzles in ascending order of their Y-axis coordinates. Furthermore, generally speaking, the number of nozzles in the target nozzle group is less than the number of nozzles in the initial nozzle group.

[0037] It should be noted that the nozzle numbers in the initial nozzle group and target nozzle group in this specification are reconstructed nozzle numbers. These reconstructed nozzle numbers are also obtained by sequentially assigning nozzle numbers in the initial nozzle group in ascending order of Y-axis coordinates. Furthermore, there is a mapping relationship between the reconstructed nozzle numbers in the initial and target nozzle groups and the nozzle numbers assigned to the nozzle module. The purpose of setting reconstructed nozzle numbers is to address situations where, in the initial nozzle group, there are nozzle numbers assigned by the nozzle module that are large and have small Y-axis coordinates (for example, generally, a larger nozzle number corresponds to a larger Y-axis coordinate; however, nozzle matching for sub-pixel pits may involve movement of the nozzle module in the Y-axis direction, resulting in either a large nozzle number and a small Y-axis coordinate, or vice versa). This facilitates easier identification of the target nozzle group from the initial nozzle group later.

[0038] In one example, the first sub-pixel pit is of any one of the following types: R sub-pixel pit, G sub-pixel pit, and B sub-pixel pit, and each type of sub-pixel pit corresponds to a target film thickness range for that type of sub-pixel pit.

[0039] The above examples illustrate several common subpixel pit types. Generally, different types of pits have different dimensions (length and width), meaning that for the same film thickness, different types of pits require different total droplet volumes. Therefore, when matching target nozzle groups for subpixel pits, the type of subpixel pit needs to be considered.

[0040] Of course, if multiple types of subpixel pits have the same size, the type of subpixel pit can be considered, or it can be ignored.

[0041] In one example, the droplet landing range includes an X-axis range and a Y-axis range; wherein, the X-axis range includes multiple droplet landing points along the X-axis, and the Y-axis range includes intervals along the Y-axis; the X-axis direction is the printing direction of the printhead module in the inkjet printer; the distance between the droplet landing point located at the edge of the droplet landing range and the edge of the first sub-pixel pit is greater than the radius of the droplet spreading, specifically including: the distance between the droplet landing point located at the edge of the X-axis range and the edge of the first sub-pixel pit along the X-axis is greater than the radius of the droplet spreading; and the distance between the droplet landing point located at the edge of the Y-axis direction and the edge of the first sub-pixel pit along the Y-axis is greater than the radius of the droplet spreading.

[0042] In the example above, the number of ink droplet landing points in the X-axis direction is the number of grids located in the X-axis direction within the ink droplet landing point range in the sub-pixel pit after the substrate bitmap is rasterized. The Y-axis direction is the direction for matching the nozzle with the ink droplet landing point range. Since the requirements for the ink droplet landing point distribution are low in this specification, it is sufficient that the Y-axis coordinate of the nozzle is within the ink droplet landing point range; it is not necessary for the Y-axis coordinate of the nozzle to also be within the grid.

[0043] by Figure 2 and Figure 3 For example, let's explain the range of ink droplet landing points. Figure 2 and Figure 3 The examples illustrate three sub-pixel pits after the substrate bitmap is rasterized, representing three types of sub-pixel pits. The red box marks the edge of the R sub-pixel pit, the green box marks the edge of the G sub-pixel pit, and the blue box marks the edge of the B sub-pixel pit. Figure 2The R sub-pixel pit contains a red area that represents the range of ink droplet landing points. The distance between the landing point on the X-axis edge of the ink droplet landing point range and the X-axis edge of the R sub-pixel pit is D2, and the distance between the landing point on the Y-axis edge of the ink droplet landing point range and the Y-axis edge of the R sub-pixel pit is D1. Both D1 and D2 are greater than the radius of the ink droplet spreading. Figure 2 In the example, the radius of the ink droplet spreading is less than the size of one grid cell. Similarly, for the G sub-pixel pit, the green area inside represents the range of ink droplet landing points; the distance between the landing point located at the X-axis edge of the ink droplet landing point range and the X-axis edge of the G sub-pixel pit is D4, and the distance between the landing point located at the Y-axis edge of the ink droplet landing point range and the Y-axis edge of the G sub-pixel pit is D3; both D3 and D4 are greater than the radius of the ink droplet spreading.

[0044] Figure 3 The diagram illustrates the range of ink droplet landing points, including multiple droplet landing points along the X-axis and a matching interval for the nozzle along the Y-axis. Specifically, the X-axis direction of the B sub-pixel pit illustrates two ink droplet landing points, X1 and X2; the X-axis direction of the G sub-pixel pit illustrates three ink droplet landing points, X3, X4, and X5. In the Y-axis direction of the B sub-pixel pit, interval Y1 is illustrated; and in the Y-axis direction of the G sub-pixel pit, interval Y2 is illustrated. After the substrate bitmap is rasterized, a grid can be considered the smallest ink droplet landing point. Therefore, in the X-axis direction, the coordinates of the ink droplet landing point are the X-axis center position of the corresponding grid. Since the Y-axis direction does not require planning of the landing point distribution, only matching the Y-axis coordinates is needed; it is not necessary to emphasize that the landing point must be the Y-axis center position of the grid.

[0045] It should be noted that the target film thickness range is often consistent for various types of subpixel pits on the substrate. The substrates mentioned in this specification have varying requirements for subpixel pit film uniformity depending on the actual printing needs; this refers to the different inkjet printing requirements corresponding to different substrates in different scenarios. In other words, for the same printing scenario or the same printing substrate, the target film thickness range for various types of subpixel pits is generally consistent.

[0046] In one example, the initial nozzle group includes a first nozzle and a second nozzle, the nozzle number of the first nozzle is less than the nozzle number of the second nozzle, and the first nozzle is adjacent to the second nozzle; the first nozzle ejects a first volume of ink droplets, and the second nozzle ejects a second volume of ink droplets, the X-axis range of the ink droplet landing point includes a first number of ink droplet landing points; the construction of the first target nozzle group specifically includes: constructing a first target nozzle group, the first target nozzle group including the first nozzle ejecting a first number of ink droplets and the second nozzle ejecting a second number of ink droplets; wherein, the second number is less than or equal to the first number.

[0047] In this example, the nozzles are matched sequentially from the initial nozzle group according to their nozzle numbers, prioritizing nozzles with smaller numbers (smallest Y-axis coordinates) for matching. Furthermore, when matching the first nozzle with the smaller number, all droplet landing points within the X-axis range are planned first (i.e., the first number of droplet landing points), and then landing point planning is performed for the adjacent second nozzle, resulting in high efficiency. This method of constructing the first target nozzle group is not only suitable for scenarios with high requirements for sub-pixel pit thickness uniformity, but also boasts high construction efficiency.

[0048] by Figure 4 For example, Figure 4 The image shows three sub-pixel pits after the substrate bitmap is rasterized. These three types of sub-pixel pits are R-type, G-type, and B-type. The red box indicates the edge of the R-type sub-pixel pit, and the red area occupying four grid squares inside represents the droplet landing point range. The printhead module 400 has multiple nozzles, including a first nozzle 401 and a second nozzle 402, both located in the initial nozzle group corresponding to the R-type sub-pixel pit. In the Y-axis direction, the Y-axis coordinates of both the first nozzle 401 and the second nozzle 402 are within the droplet landing point range, and the nozzle number of the first nozzle 401 is less than that of the second nozzle 402, so the first nozzle 401 is matched first. The first nozzle 401 needs to first plan two landing points on the X-axis, that is, plan the maximum number of landing points in the X-axis direction, before planning the next nozzle. Figure 4 The second nozzle 402 is shown. The sum of the ink droplet volumes of multiple nozzles and the planned number is the target volume of the R sub-pixel pit. This target volume can improve the film thickness uniformity of the R sub-pixel pit. For example: M1×N1+M2×N2+……+Mn×Nn=Total ink droplet volume of the R sub-pixel pit. M1 is the ink droplet volume corresponding to the first nozzle, M2 is the ink droplet volume corresponding to the second nozzle, and Mn is the ink droplet volume corresponding to the nth nozzle; N1 is the planned number of ink droplets for the first nozzle, N2 is the planned number of ink droplets for the second nozzle, and Nn is the planned number of ink droplets for the nth nozzle; and the total ink droplet volume of the R sub-pixel pit is the total ink droplet volume within the target film thickness range corresponding to the R sub-pixel pit.

[0049] At this point, the first and second nozzles are merely examples; in reality, there can be multiple nozzles; this is not a limitation. Furthermore, the above does not restrict the position of the droplet landing row matching the first and second nozzles within the ink droplet landing range.

[0050] In one example, after constructing the first target nozzle group, the processing method further includes: when the first nozzle and the second nozzle match the same droplet landing row in the droplet landing range, the landing row is located at the middle position of the Y-axis of the droplet landing range; when the first nozzle and the second nozzle match different droplet landing rows in the droplet landing range, the droplet landing row matched by the first nozzle and the droplet landing row matched by the second nozzle are not adjacent.

[0051] This example discusses the distribution of ink droplets within the droplet landing area. As discussed above, it is possible not to plan the droplet landing distribution. However, in scenarios with higher requirements for sub-pixel pit film thickness (e.g., sub-pixel pit film thickness uniformity ≤5% without planning the landing distribution, but ≤4% with planning), the droplet distribution within the droplet landing area can be planned; there are no limitations on this. In other words, planning the droplet distribution within the droplet landing area will result in slightly better sub-pixel pit film thickness uniformity.

[0052] Furthermore, the printhead module is composed of multiple printheads spliced ​​together. Generally, when printheads are spliced ​​along the Y-axis, they are staggered by a certain distance; that is, setting the printhead number along the Y-axis will not result in printheads with the same Y-coordinate. However, with multiple printheads spliced ​​together, and each printhead having a relatively large number of printheads, there may be cases where printheads in printhead A and printhead B have the same Y-coordinate. In this case, these two printheads with the same Y-coordinate will be matched to the same droplet landing row, which can be positioned in the middle of the Y-axis of the ink droplet landing range. Of course, two printheads not in the same landing row can also be configured with staggered landing rows as much as possible (i.e., the two landing rows are not adjacent, or there are other landing rows between them). Both of these methods take into account ink droplet leveling, which can affect the uniformity of the film layer within the sub-pixel pits after drying.

[0053] Furthermore, the aforementioned intermediate positions are relative; non-edge positions are considered intermediate positions. Moreover, when multiple target nozzle groups can be identified within the initial nozzle group, a landing distribution scheme can be selected. The actual selection of the above landing distribution scheme also needs to consider the printhead module's print stroke count; the fewer the print stroke count, the higher the inkjet printer's printing efficiency. This manual does not discuss the print stroke count.

[0054] In one example, the initial nozzle group includes a third nozzle and a fourth nozzle, wherein the nozzle number of the third nozzle is less than the nozzle number of the fourth nozzle, and the third nozzle is adjacent to the fourth nozzle; the third nozzle ejects a third volume of ink droplets, and the fourth nozzle ejects a fourth volume of ink droplets, and the X-axis range of the ink droplet landing points includes a third number of ink droplet landing points; the construction of the first target nozzle group specifically includes: constructing the first target nozzle group, which is determined from the number matrix of ink droplets ejected by the third nozzle and the fourth nozzle, wherein the number matrix consists of a first number group and a second number group; wherein the first number group is the set of the number of ink droplets ejected by the third nozzle in the X-axis direction, the second number group is the set of the number of ink droplets ejected by the fourth nozzle in the X-axis direction, and the number of ink droplets in the first number group is greater than or equal to 0 and less than the third number, and the number of ink droplets in the second number group is greater than or equal to 0 and less than or equal to the third number.

[0055] In the above examples, this approach is not only applicable to scenarios with higher requirements for sub-pixel pit film thickness (e.g., sub-pixel pit film thickness uniformity ≤4%, ≤3%, or ≤2%, the sub-pixel pit film thickness uniformity ratio is only used as an example for ease of understanding), but it can also solve the problem that in the above scheme where the first nozzle is prioritized to plan all droplet landing points within the X-axis range, the target nozzle group may not be obtained (e.g., the uniformity of sub-pixel pit film thickness is converted into the total droplet volume, taking ±3% volume as an example; a total droplet volume of 50PL requires a droplet volume fluctuation range of ±1.5PL; when the minimum droplet volume of a single nozzle is 4PL and the droplet volume in the current sub-pixel pit is already 48PL, it becomes impossible to determine the last suitable nozzle (i.e., without planning the last droplet, 48PL does not meet the requirement of the total droplet volume; planning the last droplet, 52PL also does not meet the requirement of the total droplet volume), that is, the target nozzle group cannot be matched).

[0056] like Figure 5 As shown, the printhead module includes a third nozzle 501 and a fourth nozzle 502. Both nozzles are within the droplet landing area of ​​the G sub-pixel pit and belong to the initial nozzle group. During landing point planning, the number of droplets that can be planned for the third nozzle 501 in the X-axis direction is 0, 1, 2, and 3, forming an array. Similarly, the number of droplets that can be planned for the fourth nozzle 502 in the X-axis direction is also 0, 1, 2, and 3, forming another array (in this case, the third number is 4). These two values ​​form a droplet quantity matrix, from which the quantity combinations can be determined to identify the target nozzle group. This method does not require that the third nozzle 501 be planned to have 3 droplets before planning the number of the fourth nozzle 502, making it more adaptable and flexible.

[0057] Furthermore, to differentiate the method of determining the target nozzle group using a quantity matrix from the method where the third nozzle 501 must plan all three landing points, the number of ink droplets in the first quantity group is not set to be equal to the third quantity. In practice, the third quantity can also be set in the quantity matrix method. Figure 5 In the G sub-pixel pit, the third number is 4.

[0058] Furthermore, the third and fourth nozzles are merely examples; in reality, there can be multiple nozzles; there is no limitation on this.

[0059] In one example, the first target nozzle group is determined from the number matrix of ink droplets ejected by the third nozzle and the fourth nozzle, specifically by determining the first target nozzle group in ascending order of the number of ink droplets ejected from the third nozzle and the fourth nozzle.

[0060] This example aims to discuss a more efficient matching strategy: a depth-first matching strategy for the third nozzle group. Since the nozzle number of the third nozzle is less than that of the fourth nozzle, the first number group corresponding to the third nozzle is used for matching first. For example, if the number of droplets from the third nozzle is 0, then it is (0, N), where N is the number of droplets from the fourth nozzle, which is 0, 1, 2, ..., and N is at most the maximum number of droplet rows in the droplet droplet range (i.e., the maximum number of droplets in the X-axis direction within the droplet droplet droplet range). The matching proceeds sequentially as (1, N), (2, N) ... (N-1, N) until the target nozzle group is matched. This approach balances matching efficiency and accuracy (i.e., it meets the requirements for scenarios with higher sub-pixel pit film thickness).

[0061] Of course, when using two nozzles for matching, the number group corresponding to the fourth nozzle is used as the basis for the depth-first matching strategy. Similar to the example above, no further explanation is given.

[0062] In one example, the substrate bitmap includes a first sub-pixel pit, a second sub-pixel pit, and a third sub-pixel pit. A second target nozzle group ensures the film thickness of the second sub-pixel pit is within the target film thickness range, and a third target nozzle group ensures the film thickness of the third sub-pixel pit is within the target film thickness range. The number of nozzles in the second target nozzle group is less than the number of nozzles in the third target nozzle group. Constructing the first target nozzle group specifically includes: if the first target nozzle group cannot be determined in the initial nozzle group corresponding to the first sub-pixel pit, then using the second target nozzle group as a reference, matching the nozzles in the second target nozzle group with the first sub-pixel pit; wherein the first sub-pixel pit, the second sub-pixel pit, and the third sub-pixel pit are of the same type; constructing the first target nozzle group, where the nozzle number of the nozzles in the first target nozzle group is the same as the nozzle number of the nozzles in the second target nozzle group, and the number of ink droplets ejected by the nozzles in the first target nozzle group is the same as the number of ink droplets ejected by the nozzles in the second target nozzle group.

[0063] This example not only applies to scenarios with higher requirements for subpixel pit film thickness (e.g., subpixel pit film thickness uniformity ≤4%, ≤3%, or ≤2%, where the uniformity ratio is only used as an example for ease of understanding), but also provides a highly efficient solution for situations where the target nozzle group cannot be determined for the initial nozzle group corresponding to the subpixel pit. By finding subpixel pits that have already matched the target nozzle group and selecting a target nozzle group with fewer nozzles as a reference, the printhead module is moved so that the nozzles in this target nozzle group with fewer nozzles match the first subpixel pit. This method minimizes the number of times the nozzle module is moved, i.e., minimizes the number of additional print passes; thus, it has high matching efficiency.

[0064] In one example, the nozzles in the first target nozzle group consist of a fifth nozzle and a sixth nozzle, wherein the fifth nozzle is a nozzle in the initial nozzle group, which is determined by the same nozzles in the initial nozzle group and the second target nozzle group; and the sixth nozzle is a supplementary nozzle, which is determined by the nozzles in the second target nozzle group other than the fifth nozzle.

[0065] At this point, a nozzle completion scheme is disclosed, which involves selecting a target nozzle group with a smaller number of nozzles as a reference to construct the target nozzle group. Specifically, although the nozzles in the initial nozzle group corresponding to the first sub-pixel pit cannot determine the target nozzle group, it can be determined whether there are any nozzles in the initial nozzle group that are identical to those in the second target nozzle group (the target nozzle group with a smaller number of nozzles). If identical nozzles exist, then only the missing nozzles need to be completed in the first target nozzle group; these missing nozzles are those present in the second target nozzle group but not in the first target nozzle group. Of course, if there are no identical nozzles in the initial nozzle group that are identical to those in the second target nozzle group, then all nozzles in the second target nozzle group can be directly used as nozzles in the first target nozzle group; this can be called a complete nozzle completion operation.

[0066] It should be noted that the above completion operation includes not only the nozzle, but also the number of ink droplets ejected by the nozzle.

[0067] This specification also discloses an inkjet printer, including 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 to cause the inkjet printer to perform the following instructions: Obtain the range of ink droplet landing points in the first sub-pixel pit. The distance between the ink droplet landing point located at the edge of the ink droplet landing point range and the edge of the first sub-pixel pit is greater than the radius of the ink droplet spreading. The first sub-pixel pit is any sub-pixel pit in the substrate bitmap. Obtain the initial nozzle group matching the first sub-pixel pit; the initial nozzle group includes the nozzle number and the number of ink droplets ejected by the nozzle, with one nozzle corresponding to one ink droplet volume; Construct a first target nozzle group; wherein, the first target nozzle group is a combination of nozzles obtained by matching nozzles from the initial nozzle group for each row of droplet landing points in the Y-axis direction, and the first target nozzle group ensures that the film thickness of the first sub-pixel pit is within the target film thickness range, and the first target nozzle group includes the nozzle number and the number of ink droplets ejected by the nozzle, and the Y-axis direction is the movement direction of the printhead module in the inkjet printer.

[0068] In one example, the initial nozzle group includes a first nozzle and a second nozzle, the nozzle number of the first nozzle is less than the nozzle number of the second nozzle, and the first nozzle is adjacent to the second nozzle; the first nozzle ejects a first volume of ink droplets, and the second nozzle ejects a second volume of ink droplets, the X-axis range of the ink droplet landing point includes a first number of ink droplet landing points; the construction of the first target nozzle group specifically includes: constructing a first target nozzle group, the first target nozzle group including the first nozzle ejecting a first number of ink droplets and the second nozzle ejecting a second number of ink droplets; wherein, the second number is less than or equal to the first number.

[0069] In one example, after constructing the first target nozzle group, the processing method further includes: when the first nozzle and the second nozzle match the same droplet landing row in the droplet landing range, the landing row is located at the middle position of the Y-axis of the droplet landing range; when the first nozzle and the second nozzle match different droplet landing rows in the droplet landing range, the droplet landing row matched by the first nozzle and the droplet landing row matched by the second nozzle are not adjacent.

[0070] In one example, the initial nozzle group includes a third nozzle and a fourth nozzle, wherein the nozzle number of the third nozzle is less than the nozzle number of the fourth nozzle, and the third nozzle is adjacent to the fourth nozzle; the third nozzle ejects a third volume of ink droplets, and the fourth nozzle ejects a fourth volume of ink droplets, and the X-axis range of the ink droplet landing points includes a third number of ink droplet landing points; the construction of the first target nozzle group specifically includes: constructing the first target nozzle group, which is determined from the number matrix of ink droplets ejected by the third nozzle and the fourth nozzle, wherein the number matrix consists of a first number group and a second number group; wherein the first number group is the set of the number of ink droplets ejected by the third nozzle in the X-axis direction, the second number group is the set of the number of ink droplets ejected by the fourth nozzle in the X-axis direction, and the number of ink droplets in the first number group is greater than or equal to 0 and less than the third number, and the number of ink droplets in the second number group is greater than or equal to 0 and less than or equal to the third number.

[0071] In one example, the first target nozzle group is determined from the number matrix of ink droplets ejected by the third nozzle and the fourth nozzle, specifically by determining the first target nozzle group in ascending order of the number of ink droplets ejected from the third nozzle and the fourth nozzle.

[0072] In one example, the substrate bitmap includes a first sub-pixel pit, a second sub-pixel pit, and a third sub-pixel pit. A second target nozzle group ensures the film thickness of the second sub-pixel pit is within the target film thickness range, and a third target nozzle group ensures the film thickness of the third sub-pixel pit is within the target film thickness range. The number of nozzles in the second target nozzle group is less than the number of nozzles in the third target nozzle group. Constructing the first target nozzle group specifically includes: if the first target nozzle group cannot be determined in the initial nozzle group corresponding to the first sub-pixel pit, then using the second target nozzle group as a reference, matching the nozzles in the second target nozzle group with the first sub-pixel pit; wherein the first sub-pixel pit, the second sub-pixel pit, and the third sub-pixel pit are of the same type; constructing the first target nozzle group, where the nozzle number of the nozzles in the first target nozzle group is the same as the nozzle number of the nozzles in the second target nozzle group, and the number of ink droplets ejected by the nozzles in the first target nozzle group is the same as the number of ink droplets ejected by the nozzles in the second target nozzle group.

[0073] In one example, the nozzles in the first target nozzle group consist of a fifth nozzle and a sixth nozzle, wherein the fifth nozzle is a nozzle in the initial nozzle group, which is determined by the same nozzles in the initial nozzle group and the second target nozzle group; and the sixth nozzle is a supplementary nozzle, which is determined by the nozzles in the second target nozzle group other than the fifth nozzle.

[0074] In one example, the first sub-pixel pit is of any one of the following types: R sub-pixel pit, G sub-pixel pit, and B sub-pixel pit, and each type of sub-pixel pit corresponds to a target film thickness range for that type of sub-pixel pit.

[0075] In one example, the droplet landing range includes an X-axis range and a Y-axis range; wherein, the X-axis range includes multiple droplet landing points along the X-axis, and the Y-axis range includes intervals along the Y-axis; the X-axis direction is the printing direction of the printhead module in the inkjet printer; the distance between the droplet landing point located at the edge of the droplet landing range and the edge of the first sub-pixel pit is greater than the radius of the droplet spreading, specifically including: the distance between the droplet landing point located at the edge of the X-axis range and the edge of the first sub-pixel pit along the X-axis is greater than the radius of the droplet spreading; and the distance between the droplet landing point located at the edge of the Y-axis direction and the edge of the first sub-pixel pit along the Y-axis is greater than the radius of the droplet spreading.

[0076] It should be noted that the above embodiments of the apparatus are only illustrated by the division of the above functional modules. In practical 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 apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0077] The specification also discloses a computer-readable storage medium storing instructions that, when executed, perform the method described above.

[0078] This embodiment also discloses an electronic device, which may be an inkjet printer, to perform the above-described method. (Refer to...) Figure 6 The electronic device may include: at least one processor 601, at least one communication bus 602, display 603, network interface 604, and at least one memory 605.

[0079] The communication bus 602 is used to enable communication between these components.

[0080] The display 603 may include a display screen and a camera.

[0081] The network interface 604 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface).

[0082] The processor 601 may include one or more processing cores. The processor 601 connects to various parts of the server using various interfaces and lines, and performs various server functions and processes data by running or executing instructions, programs, code sets, or instruction sets stored in the memory 605, and by calling data stored in the memory 605. Optionally, the processor 601 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 601 may integrate one or a combination of several of the following: Central Processing Unit (CPU), Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the content required for display; and the modem handles wireless communication. It is understood that the modem may also not be integrated into the processor 601 and may be implemented as a separate chip.

[0083] The memory 605 may include random access memory (RAM) or read-only memory. Optionally, the memory 605 may include a non-transitory computer-readable storage medium. The memory 605 may be used to store instructions, programs, code, code sets, or instruction sets. The memory 605 may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for at least one function (such as touch functionality, sound playback functionality, image playback functionality, etc.), instructions for implementing the various method embodiments described above, etc.; the data storage area may store data involved in the various method embodiments described above, etc. Optionally, the memory 605 may also be at least one storage device located remotely 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 for a display module.

[0084] exist Figure 6In the electronic device shown, the display 603 is mainly used to provide an input interface for the user and to obtain the user input data; while the processor 601 can be used to call the application program stored in the memory 605. When executed by one or more processors 601, the electronic device performs one or more methods as described in the above embodiments.

[0085] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0086] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0087] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the shown or discussed mutual couplings or direct couplings or communication connections may be through some service interfaces; indirect couplings or communication connections between apparatuses or units may be electrical or other forms.

[0088] The units described as separate components may or may not be physically separate. The 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 the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0089] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0090] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage device (CMD). Based on this understanding, the technical solution of this application, in essence, 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. This computer software product is stored in a memory 605 and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned memory 605 includes various media capable of storing program code, such as a USB flash drive, external hard drive, magnetic disk, or optical disk.

[0091] The above are merely exemplary embodiments of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. Those skilled in the art will readily conceive of other embodiments of this disclosure upon considering the specification and the disclosure of practical truth. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described in this disclosure. The specification and embodiments are considered exemplary only, and the scope and spirit of this disclosure are defined by the claims.

Claims

1. A method for processing the thickness of a sub-pixel pit film layer, characterized in that, The processing method includes: Obtain the range of ink droplet landing points in the first sub-pixel pit. The distance between the ink droplet landing point located at the edge of the ink droplet landing point range and the edge of the first sub-pixel pit is greater than the radius of the ink droplet spreading. The first sub-pixel pit is any sub-pixel pit in the substrate bitmap. Obtain the initial nozzle group matching the first sub-pixel pit; the initial nozzle group includes the nozzle number and the number of ink droplets ejected by the nozzle, with one nozzle corresponding to one ink droplet volume; Construct a first target nozzle group; wherein, the first target nozzle group is a combination of nozzles obtained by matching nozzles from the initial nozzle group for each row of droplet landing points in the Y-axis direction, and the first target nozzle group ensures that the film thickness of the first sub-pixel pit is within the target film thickness range, and the first target nozzle group includes the nozzle number and the number of ink droplets ejected by the nozzle, and the Y-axis direction is the movement direction of the printhead module in the inkjet printer.

2. The processing method according to claim 1, characterized in that, The initial nozzle group includes a first nozzle and a second nozzle, wherein the nozzle number of the first nozzle is less than the nozzle number of the second nozzle, and the first nozzle and the second nozzle are adjacent to each other; the first nozzle ejects a first volume of ink droplets, and the second nozzle ejects a second volume of ink droplets, wherein the X-axis range of the ink droplet landing point includes a first number of ink droplet landing points. The construction of the first target nozzle group specifically includes: constructing the first target nozzle group, wherein the first target nozzle group includes the first nozzle ejecting a first number of ink droplets and the second nozzle ejecting a second number of ink droplets; wherein the second number is less than or equal to the first number.

3. The processing method according to claim 2, characterized in that, After constructing the first target nozzle group, the processing method further includes: When the first nozzle and the second nozzle match the same droplet landing row in the droplet landing range, the droplet landing row is located at the middle position of the Y-axis of the droplet landing range. When the first nozzle and the second nozzle match different droplet droplet rows within the droplet droplet droplet range, the droplet droplet row matched by the first nozzle and the droplet droplet row matched by the second nozzle are not adjacent.

4. The processing method according to any one of claims 1-3, characterized in that, The initial nozzle group includes a third nozzle and a fourth nozzle. The nozzle number of the third nozzle is less than that of the fourth nozzle, and the third nozzle is adjacent to the fourth nozzle. The third nozzle ejects a third volume of ink droplets, and the fourth nozzle ejects a fourth volume of ink droplets. The X-axis range of the ink droplet landing point includes a third number of ink droplet landing points. The construction of the first target nozzle group specifically includes: constructing the first target nozzle group, which is determined from the number matrix of ink droplets ejected by the third and fourth nozzles, the number matrix consisting of a first number group and a second number group; wherein... The first quantity group is the set of the number of ink droplets ejected by the third nozzle in the X-axis direction, the second quantity group is the set of the number of ink droplets ejected by the fourth nozzle in the X-axis direction, and the number of ink droplets in the first quantity group is greater than or equal to 0 and less than the third quantity, and the number of ink droplets in the second quantity group is greater than or equal to 0 and less than or equal to the third quantity.

5. The processing method according to claim 4, characterized in that, The first target nozzle group is determined from the number matrix of ink droplets ejected by the third nozzle and the fourth nozzle, specifically including: The first target nozzle group is determined from the matrix of the number of ink droplets ejected from the third nozzle and the fourth nozzle, in ascending order of the number of ink droplets in the first number group.

6. The processing method according to any one of claims 1-3 and 5, characterized in that, The substrate bitmap includes a first sub-pixel pit, a second sub-pixel pit, and a third sub-pixel pit. The second target nozzle group ensures that the film thickness of the second sub-pixel pit is within the target film thickness range, and the third target nozzle group ensures that the film thickness of the third sub-pixel pit is within the target film thickness range. The number of nozzles in the second target nozzle group is less than the number of nozzles in the third target nozzle group. The construction of the first target nozzle group specifically includes: If the first target nozzle group cannot be determined in the initial nozzle group corresponding to the first sub-pixel pit, then the second target nozzle group is used as a reference, and the nozzles in the second target nozzle group are used to match the first sub-pixel pit; wherein, the first sub-pixel pit, the second sub-pixel pit and the third sub-pixel pit are sub-pixel pits of the same type; Construct a first target nozzle group, wherein the nozzle number of the nozzle in the first target nozzle group is the same as the nozzle number of the nozzle in the second target nozzle group, and the number of ink droplets ejected by the nozzle in the first target nozzle group is the same as the number of ink droplets ejected by the nozzle in the second target nozzle group.

7. The processing method according to claim 6, characterized in that, The nozzles in the first target nozzle group consist of a fifth nozzle and a sixth nozzle, wherein, The fifth nozzle is a nozzle in the initial nozzle group, determined by the same nozzles in the initial nozzle group and the second target nozzle group; The sixth nozzle is a supplementary nozzle, determined by the nozzles in the second target nozzle group other than the fifth nozzle.

8. The processing method according to claim 1, characterized in that, The first sub-pixel pit is of any one of the following types: R sub-pixel pit, G sub-pixel pit, and B sub-pixel pit. Each type of sub-pixel pit corresponds to a target film thickness range for that type of sub-pixel pit.

9. The processing method according to claim 1, characterized in that, The range of ink droplet landing points includes the X-axis range and the Y-axis range; wherein, the X-axis range includes multiple ink droplet landing points in the X-axis direction, and the Y-axis range includes an interval in the Y-axis direction; the X-axis direction is the printing direction of the printhead module in the inkjet printer. The distance between the ink droplet landing point located at the edge of the ink droplet landing point range and the edge of the first sub-pixel pit is greater than the radius of the ink droplet spreading, specifically including: The distance between the ink droplet landing point located at the edge of the X-axis direction and the edge of the first sub-pixel pit in the X-axis direction is greater than the radius of the ink droplet spreading; and the distance between the ink droplet landing point located at the edge of the Y-axis direction and the edge of the first sub-pixel pit in the Y-axis direction is greater than the radius of the ink droplet spreading.

10. An inkjet printer, characterized in that, It includes a processor, memory, user interface, and network interface. The memory stores instructions, the user interface and network interface are used to communicate with other devices, and the processor executes the instructions stored in the memory to cause the inkjet printer to perform the following instructions: Obtain the range of ink droplet landing points in the first sub-pixel pit. The distance between the ink droplet landing point located at the edge of the ink droplet landing point range and the edge of the first sub-pixel pit is greater than the radius of the ink droplet spreading. The first sub-pixel pit is any sub-pixel pit in the substrate bitmap. Obtain the initial nozzle group matching the first sub-pixel pit; the initial nozzle group includes the nozzle number and the number of ink droplets ejected by the nozzle, with one nozzle corresponding to one ink droplet volume; Construct a first target nozzle group; wherein, the first target nozzle group is a combination of nozzles obtained by matching nozzles from the initial nozzle group for each row of droplet landing points in the Y-axis direction, and the first target nozzle group ensures that the film thickness of the first sub-pixel pit is within the target film thickness range, and the first target nozzle group includes the nozzle number and the number of ink droplets ejected by the nozzle, and the Y-axis direction is the movement direction of the printhead module in the inkjet printer.

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