Processing method related to abutted seam Mura patterns and ink-jet printer

Abstract

The invention discloses a processing method related to abutted seam Mura patterns. The method comprises the steps that a to-be-printed pattern is divided into at least two printing partitions; wherein one printing subarea is a corresponding area, printed on the substrate at a time, of the nozzle module, and the at least two printing subareas comprise the first printing subarea and the second printing subarea; printing operation is executed on the edge area according to a preset first proportion and a preset second proportion; wherein the edge area is an adjacent area of the first printing subarea and the second printing subarea, the edge area comprises a first edge area and a second edge area, and the preset first proportion is the proportion of ink droplets printed by the spray head module for the first time to ink droplets to be printed in the first edge area, and the preset second proportion is the proportion of ink droplets printed by the spray head module for the second time to ink droplets to be printed in the second edge area. The preset second proportion is the proportion of ink droplets printed by the nozzle module for the second time to ink droplets to be printed in the second edge area. According to the method and the device, abutted seam Mura patterns between two adjacent pass can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of inkjet printing of display screens, and in particular to a method for processing seam Mura and an inkjet printer. Background Art

[0002] At present, in the inkjet printing process (piezoelectric or electrofluidic), when the size of the substrate to be printed is larger than the printing size of the nozzle module, the nozzle module performs multiple prints. That is, the nozzle module needs to perform multiple passes to print the entire substrate; that is, the One Pass printing method cannot be used.

[0003] However, because two adjacent passes cannot be "perfectly matched", or in other words, the thickness of the ink droplets at the seam between two adjacent passes is uneven, visible mura patterns appear. Figure 1 As shown, the X direction is the moving direction of the nozzle module 101, and the Y direction is the moving direction of the substrate 100. Figure 1 The first print of a, and the nozzle module 101 Figure 1 The second printing in b will form a seam 102. When the seam between the two prints is narrow, the thickness of the ink droplets at the seam increases, resulting in Mura convex patterns; when the seam between the two prints is wide, the thickness of the ink droplets at the seam decreases, resulting in Mura concave patterns. Mura patterns (Mura convex patterns or Mura concave patterns) will affect the printing quality and also affect the display quality of the OLED display panel.

[0004] Therefore, how to reduce the mura in the seam between two adjacent passes has become an urgent problem to be solved. Summary of the invention

[0005] The present application provides a method for processing seam Mura and an inkjet printer, which can reduce the seam Mura between two adjacent passes.

[0006] In a first aspect, the present application discloses a method for processing seam Mura, the method comprising: dividing a pattern to be printed into at least two printing partitions; wherein one printing partition is a corresponding area printed on a substrate by a nozzle module at a single time, and the at least two printing partitions include a first printing partition and a second printing partition; performing a printing operation on an edge area at a preset first ratio and a preset second ratio; wherein the edge area is an adjacent area of ​​the first printing partition and the second printing partition, the edge area includes a first edge area and a second edge area, the preset first ratio is the ratio of ink droplets printed by the nozzle module for the first time to ink droplets to be printed in the first edge area, and the preset second ratio is the ratio of ink droplets printed by the nozzle module for the second time to ink droplets to be printed in the second edge area.

[0007] In the above scheme, the print pattern is divided into print zones, and by setting the ink drop printing ratio on the print zones, the film thickness at the joint between two passes can be reduced by adjusting the ink drop printing ratio, thereby reducing the joint Mura.

[0008] In one possible embodiment, the first edge area includes a first sub-edge area and a second sub-edge area; performing a printing operation in the edge area at a preset first ratio specifically includes: printing the first sub-edge area at a preset first sub-ratio, and printing the second sub-edge area at a preset second sub-ratio; wherein the preset first ratio includes the preset first sub-ratio and the preset second sub-ratio, the preset first sub-ratio is greater than the preset second sub-ratio, the preset first sub-ratio is the ratio of ink droplets printed in the first sub-edge area to the ink droplets to be printed in the first edge area, and the preset second sub-ratio is the ratio of ink droplets printed in the second sub-edge area to the ink droplets to be printed in the first edge area.

[0009] In the above scheme, the first edge area is further divided into sub-edge areas, and then different printing ratios are set for different sub-edge areas; by adjusting the printing ratio of the sub-edge area, the film thickness of the sub-edge area is adjusted; and then the film thickness of the edge area is adjusted, so that the adjustment of the film thickness of the edge area is more refined and more accurate, which can further reduce the above-mentioned patchwork Mura pattern.

[0010] In one possible embodiment, the second edge area includes a third sub-edge area and a fourth sub-edge area, and the second sub-edge area is adjacent to the third sub-edge area; performing a printing operation in the edge area at a preset second ratio specifically includes: printing the third sub-edge area at a preset third sub-ratio, and printing the fourth sub-edge area at a preset fourth sub-ratio; wherein the preset second ratio includes the preset third sub-ratio and the preset fourth sub-ratio, the preset fourth sub-ratio is greater than the preset third sub-ratio, the preset third sub-ratio is the ratio of ink droplets printed in the third sub-edge area to ink droplets to be printed in the second edge area, and the preset fourth sub-ratio is the ratio of ink droplets printed in the fourth sub-edge area to ink droplets to be printed in the second edge area.

[0011] In the above scheme, on the basis of further dividing the first edge area into sub-edge areas, the second edge area adjacent to the first edge area in the edge area is further divided into sub-edge areas, and then different printing ratios are set for different sub-edge areas. The sub-edge area with a smaller printing ratio in the first edge area and the sub-edge area with a smaller printing ratio in the second edge area are set to adjacent positions, and the sub-edge areas can present a "concave" layout as a whole; that is, the sub-edge area with a higher printing ratio is located outside the edge area, and the sub-edge area with a lower printing ratio is located inside the edge area, which can further reduce the patchwork Mura.

[0012] In a possible embodiment, after performing the printing operation on the edge area, the method further includes: obtaining the film layer thickness of the edge area, and determining whether the film layer thickness is within a preset film layer thickness range; if the film layer thickness of the edge area is within the preset film layer thickness range, confirming that the film layer printing of the edge area is qualified.

[0013] In the above scheme, a preset film thickness range is set for some printing scenarios with clear requirements for film thickness. By comparing with the preset film thickness range, it is possible to determine whether the current film thickness meets the requirements; thus, the film thickness can be adjusted in this way to further reduce the seam Mura.

[0014] In a possible embodiment, after determining whether the film layer thickness is within a preset film layer thickness range, the method further includes: if the film layer thickness in the edge area is outside the preset film layer thickness range, confirming that the film layer printing in the edge area is unqualified; replacing the preset first ratio and the preset second ratio, and repeatedly performing the printing operation on the substrate until the film layer thickness printed in the edge area is qualified; wherein, replacing the preset first ratio and the preset second ratio specifically includes replacing the preset first ratio with a preset third ratio, and replacing the preset second ratio with a preset fourth ratio.

[0015] In the above scheme, when the film thickness range is set to be narrow, the edge area film thickness is still unqualified. In this case, the edge film thickness can be qualified by reconfiguring the landing point ratio of the first edge area and the second edge area. In this case, regardless of whether the edge film thickness is qualified or not, the present application can reduce the seam Mura between two adjacent passes; when the edge film thickness is qualified, the seam Mura can be further reduced.

[0016] In a possible implementation manner, when there is an overlapped area between the first edge area and the second edge area, the sum of the preset first ratio and the preset second ratio is 80%-120%.

[0017] In the above scheme, the preferred ink droplet landing ratio when the first edge area and the second edge area overlap is given. Generally speaking, the landing ratio of the first edge area or the second edge area is in the range of 10%-90%. The preferred ratio can further control the edge film thickness, thereby further reducing the joint Mura.

[0018] In a possible implementation manner, when there is no overlapping area between the first edge area and the second edge area, the sum of the preset first ratio and the preset second ratio is 100%-200%.

[0019] In the above scheme, a preferred ink droplet landing point ratio is given when there is no overlapping area between the first edge area and the second edge area.

[0020] In a possible implementation, before dividing the pattern to be printed into at least two printing partitions, the method further includes: setting an X spacing and a Y spacing corresponding to the ink parameters according to ink parameters in a nozzle module in an inkjet printer; and printing with the X spacing and the Y spacing corresponding to the ink parameters; wherein the X spacing is the spacing distance between two adjacent ink droplets in the printing direction of the nozzle module; and the Y spacing is the spacing distance between two adjacent ink droplets in the moving direction of the nozzle module.

[0021] In the above scheme, the ink parameters (ink characteristics) are considered, especially the leveling of the ink (the leveling diameter of the ink); different inks have different viscosities, and the diameters of the ink droplets spread out after printing are also different; the X spacing and Y spacing can be set according to the ink parameters, so that adjacent ink droplets can blend together, and the speed of the ink droplets blending around is consistent; to reduce the joint Mura. The above X spacing and Y spacing corresponding to the ink parameters in the nozzle module are empirical values ​​obtained from multiple tests; they can be set manually; or the commonly used inks and their corresponding X spacing and Y spacing can be established. After the corresponding relationship is established, the X spacing and Y spacing corresponding to the ink parameters of the current printing can be automatically called according to the ink parameters.

[0022] In a possible implementation, before obtaining the film thickness of the edge region, the method further includes: configuring the first edge region as a first edge pattern, and configuring the second edge region as a second edge pattern.

[0023] In the above scheme, after setting the ink droplet landing point in the edge area, the printing pattern of the edge area is configured; the configuration of the printing pattern can further "blur" the seam between the two prints, that is, the seam between two adjacent passes is no longer a straight line, thereby further reducing the seam Mura.

[0024] In a possible implementation manner, edge patterns of the first edge pattern and the second edge pattern include a curved pattern and a straight line pattern.

[0025] In the above solution, two preferred edge patterns are provided. Compared with other edge patterns, these two preferred edge patterns can further reduce the mura pattern of the patchwork seam.

[0026] In a possible implementation manner, the at least two printing partitions further include other printing partitions, and the other printing partitions form a plurality of edge regions; wherein the patterns adopted by any two edge regions are the same or different.

[0027] In the above solution, the patterns used in any two edge regions may be the same or different, and can be selected during the actual inkjet printing process; there is no limitation to this.

[0028] In a possible implementation, the pattern to be printed is divided into at least two printing partitions, specifically including: obtaining the size of the substrate to be printed and the single printing size of the nozzle module; and dividing the pattern to be printed into at least two printing partitions according to the substrate size and the single printing size.

[0029] In the above scheme, a method of dividing the printing pattern into printing zones is provided.

[0030] In a possible embodiment, before obtaining the film thickness of the edge area, the method also includes: configuring the first edge area as a third edge pattern, and configuring the second edge area as a fourth edge pattern; dividing the third edge pattern and the fourth edge pattern into a plurality of rows, and the ink droplet landing rate of any row is a random number; wherein the ink droplet landing rate is the ratio of the number of ink droplets landing in any row to the total number of ink droplets landing, the total number of ink droplets landing includes the number of ink droplets landing and the number of ink droplets not landing in any row, and the sum of the ink droplet landing rates in the same row in the third edge pattern and the fourth edge pattern is 1.

[0031] In a second aspect, the present application discloses an inkjet printer, the inkjet printer comprising a processor, a memory, a user interface, and a network interface, the memory being used to store instructions, the user interface and the network interface being used to communicate with other devices, the processor being used to execute the instructions stored in the memory so that the inkjet printer performs the following operations:

[0032] Divide the pattern to be printed into at least two printing partitions; wherein one printing partition is a corresponding area printed on the substrate by the nozzle module at a single time, and the at least two printing partitions include a first printing partition and a second printing partition;

[0033] A printing operation is performed on an edge area with a preset first ratio and a preset second ratio; wherein the edge area is an adjacent area of ​​the first printing partition and the second printing partition, the edge area includes a first edge area and a second edge area, the preset first ratio is the ratio of ink droplets printed by the nozzle module for the first time to ink droplets to be printed in the first edge area, and the preset second ratio is the ratio of ink droplets printed by the nozzle module for the second time to ink droplets to be printed in the second edge area.

[0034] In the third aspect of the present application, an electronic device is provided, 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 so that the electronic device executes any one of the methods described above.

[0035] In a fourth aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores instructions, and when the instructions are executed, any of the methods described above is executed.

[0036] The beneficial effects of this application include:

[0037] The print pattern is divided into print zones. By setting the ink drop printing ratio on the print zones, the film thickness at the joint between two passes can be reduced by adjusting the ink drop printing ratio, thereby reducing the joint Mura.

[0038] The first edge area is further divided into sub-edge areas, and then different printing ratios are set for different sub-edge areas; by adjusting the printing ratio of the sub-edge area, the film thickness of the sub-edge area is adjusted; thereby adjusting the film thickness of the edge area, so that the adjustment of the film thickness of the edge area is more refined and more accurate, and the above-mentioned joint mura can be further reduced;

[0039] On the basis of further dividing the first edge area into sub-edge areas; the second edge area adjacent to the first edge area in the edge area is further divided into sub-edge areas, and then different printing ratios are set for different sub-edge areas. The sub-edge area with a smaller printing ratio in the first edge area and the sub-edge area with a smaller printing ratio in the second edge area are set to be adjacent to each other, so that the sub-edge areas can present a "concave" layout as a whole; that is, the sub-edge area with a higher printing ratio is located outside the edge area, and the sub-edge area with a lower printing ratio is located inside the edge area, which can further reduce the Mura pattern of the patchwork seam;

[0040] For some printing scenarios with clear requirements for film thickness, a preset film thickness range is set. By comparing with the preset film thickness range, it is possible to determine whether the current film thickness meets the requirements; thus, the film thickness can be adjusted in this way to further reduce the seam Mura.

[0041] When the film thickness range is set narrow, the edge area film thickness is still unqualified. In this case, the edge film thickness can be qualified by reconfiguring the landing point ratio of the first edge area and the second edge area. In this case, regardless of whether the edge film thickness is qualified or not, the present application can reduce the joint Mura between two adjacent passes; when the edge film thickness is qualified, the joint Mura can be further reduced;

[0042] Consider the ink parameters (ink characteristics), especially the leveling of the ink (the leveling diameter of the ink); different inks have different viscosities, and the diameters of the ink droplets spread out after printing are also different; the X spacing and Y spacing can be set according to the ink parameters, so that adjacent ink droplets can blend together, and the speed of the ink droplets blending around them is consistent; to reduce the seam Mura. The above X spacing and Y spacing corresponding to the ink parameters in the nozzle module are empirical values ​​obtained from multiple tests; they can be set manually; or the commonly used inks and their corresponding X spacing and Y spacing can be established. After the corresponding relationship is established, the X spacing and Y spacing corresponding to the ink parameters of the current printing can be automatically called according to the ink parameters;

[0043] After setting the ink droplet landing point in the edge area, the printing pattern of the edge area is configured; the configuration of the printing pattern can further "blur" the seam between two prints, that is, the seam between two adjacent passes is no longer a straight line, thereby further reducing the seam Mura. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of a joint structure of substrate printing disclosed in this application specification;

[0045] Figure 2 A schematic diagram of the edge area structure of a substrate printed disclosed in this application specification;

[0046] Figure 3 A schematic diagram of a process for treating seam Mura disclosed in this application specification;

[0047] Figure 4A A schematic diagram of ink droplet landing points with non-overlapping edge areas disclosed in this application specification;

[0048] Figure 4B A schematic diagram of ink droplet landing points with overlapping edge regions disclosed in this application specification;

[0049] Figure 5A A schematic diagram of a "concave" layout structure of a sub-edge area disclosed in the specification of this application;

[0050] Figure 5B A schematic diagram of a shape structure of an edge area pattern disclosed in this application specification;

[0051] Figure 5C This is a schematic diagram of another edge area pattern shape structure disclosed in this application specification;

[0052] Figure 6 This is a schematic diagram of the structure of an inkjet printer device disclosed in this application specification.

[0053] In the figure: substrate 100, nozzle module 101, joint 102, edge areas 200 and 300, edge area 201, ink droplet non-landing area 202, ink droplet landing area 203, first sub-edge area 501, second sub-edge area 502, third sub-edge area 503, fourth sub-edge area 504. DETAILED DESCRIPTION

[0054] In order to enable technicians in this field 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.

[0055] In the description of the embodiments of the present application, words such as "for example" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" or "for example" is intended to present related concepts in a specific way.

[0056] In the description of the embodiments of the present application, the meaning of the term "multiple" refers to 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 cannot 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 "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0057] In the method disclosed in this specification, the Mura pattern in the seam is solved by setting the ink droplet landing point ratio. The generation of Mura in the seam is caused by the uneven thickness of the film layer at the seam. Specifically, the thickness of the film layer at the seam may be higher than the thickness of the film layer in other areas (for example: the central area of ​​the pattern printed by the nozzle module in a single print); it is also possible that when the nozzle module prints twice, the thickness of the film layer at the seam is inconsistent twice. This specification chooses to adjust the thickness of the film layer at the seam by setting an edge area at the seam and setting the ink droplet landing point ratio in the edge area, thereby reducing the Mura pattern in the seam.

[0058] This specification discloses a method for treating Mura in a patchwork seam, such as Figure 3 The method includes steps S110-S120. The execution subject of this specification is an inkjet printer.

[0059] Step S110, dividing the pattern to be printed into at least two printing partitions; wherein one printing partition is a corresponding area printed by the nozzle module on the substrate at a single time, and the at least two printing partitions include a first printing partition and a second printing partition.

[0060] Step S120, performing a printing operation on the edge area with a preset first ratio and a preset second ratio; wherein the edge area is an adjacent area of ​​the first printing partition and the second printing partition, the edge area includes the first edge area and the second edge area, the preset first ratio is the ratio of ink droplets printed by the nozzle module for the first time to the ink droplets to be printed in the first edge area, and the preset second ratio is the ratio of ink droplets printed by the nozzle module for the second time to the ink droplets to be printed in the second edge area.

[0061] At this time, this specification does not limit the width of the edge area, which can be adjusted according to actual needs. By dividing the edge area into a first edge area and a second edge area, the thickness of the film layer in the first edge area and the second edge area can be controlled by setting the ink drop point ratio, thereby reducing the patchwork Mura. The values ​​of the preset first ratio and the preset second ratio can both be within the range of 10%-90%.

[0062] In the above example, the first edge region and the second edge region may have overlapping regions or may not have overlapping regions. These two situations are described separately below.

[0063] In one example, when there is no overlap between the first edge region and the second edge region, the sum of the preset first ratio and the preset second ratio is preferably 100%-200%. Figure 4A For example, Figure 4A As shown, Figure 4AIn the figure, a1 and a2 constitute the edge region 201. a1 shows the first edge region (the region formed by the ink droplet landing region 203) in the edge region 201, and the landing ratio (equivalent to the preset first ratio) is 100%; a2 shows the second edge region (the region formed by the ink droplet landing region 203) in the edge region 201, and the landing ratio (equivalent to the preset second ratio) is also 100%. Figure 4A In the figure, b1 and b2 constitute the edge area 201, b1 shows the situation where the landing ratio of the first edge area (the area composed of the ink droplet landing area) is 100%, and b2 shows the situation where the landing ratio of the second edge area (the area composed of the ink droplet landing area) is 100%. Figure 4A In the example of FIG. 1 , the sum of the preset first ratio and the preset second ratio is 200%. The ink droplet landing area 203 and the ink droplet non-landing area 202 together constitute the ink droplet waiting landing area or the edge area in this specification.

[0064] In one example, when there is an overlapped area between the first edge area and the second edge area, the sum of the preset first ratio and the preset second ratio is 80%-120%. The overlapped area includes complete overlap in the edge area and partial overlap in the edge area. Figure 4B is an example where the first edge region and the second edge region completely overlap. Figure 4B For example, Figure 4B As shown, the first edge area a1 and the second edge area a2 constitute the edge area 201, which is equivalent to the first edge area, the second edge area and the edge area being the same area. a1 shows the first edge area, and the ink droplet landing ratio (equivalent to the preset first ratio) is about 49%; a2 shows the second edge area, and the ink droplet landing ratio (equivalent to the preset second ratio) is about 51%. At this time, the sum of the preset first ratio and the preset second ratio is 100%.

[0065] Figure 4B In the figure, b1 and b2 constitute the edge region 201. b1 shows a first edge region, and the ink droplet landing ratio is 57%; b2 shows a second edge region, and the ink droplet landing ratio is 57%. At this time, the sum of the preset first ratio and the preset second ratio is 114%.

[0066] In one example, a first edge area includes a first sub-edge area and a second sub-edge area; a printing operation is performed in the edge area at a preset first ratio, specifically including: printing the first sub-edge area at a preset first sub-ratio, and printing the second sub-edge area at a preset second sub-ratio; wherein the preset first ratio includes a preset first sub-ratio and a preset second sub-ratio, the preset first sub-ratio is greater than the preset second sub-ratio, the preset first sub-ratio is the ratio of ink droplets printed in the first sub-edge area to ink droplets to be printed in the first edge area, and the preset second sub-ratio is the ratio of ink droplets printed in the second sub-edge area to ink droplets to be printed in the first edge area.

[0067] In this example, the first edge area is taken as an example to further divide the sub-edge area. The first edge area is further divided into multiple sub-edge areas. In the above example, two sub-edge areas are used for illustration. This specification does not limit the number of sub-edge areas. This division method can set the ink drop point ratio for any sub-edge area in the first edge area, and then adjust the film thickness of a smaller area (sub-edge area). Thereby further reducing the patchwork Mura.

[0068] In one example, the second edge area includes a third sub-edge area and a fourth sub-edge area, and the second sub-edge area is adjacent to the third sub-edge area; a printing operation is performed in the edge area at a preset second ratio, specifically including: printing the third sub-edge area at a preset third sub-ratio, and printing the fourth sub-edge area at a preset fourth sub-ratio; wherein the preset second ratio includes a preset third sub-ratio and a preset fourth sub-ratio, the preset fourth sub-ratio is greater than the preset third sub-ratio, the preset third sub-ratio is the ratio of ink droplets printed in the third sub-edge area to ink droplets to be printed in the second edge area, and the preset fourth sub-ratio is the ratio of ink droplets printed in the fourth sub-edge area to ink droplets to be printed in the second edge area.

[0069] In this example, the ratio values ​​of the preset first sub-ratio and the preset fourth sub-ratio can be the same, and the ratio values ​​of the preset second sub-ratio and the preset third sub-ratio can also be the same. Of course, the ink droplet landing point ratio in each sub-edge area can be set according to actual needs, and this specification does not limit this.

[0070] by Figure 5A Take the above example as an example to illustrate.

[0071] exist Figure 5AIn the figure, a1 and a2 constitute the edge area 201. Among them, a1 shows the first edge area, including the first sub-edge area 501 and the second sub-edge area 502; the ink droplet landing ratio of the first sub-edge area 501 is greater than the ink droplet landing ratio of the second sub-edge area 502. a2 shows the second edge area, including the third sub-edge area 503 and the fourth sub-edge area 504; the ink droplet landing ratio of the fourth sub-edge area 504 is greater than the ink droplet landing ratio of the third sub-edge area 503. The second sub-edge area 502 and the third sub-edge area 503 are adjacent, and the four edge sub-areas form a "concave" structure. This layout of sub-edge areas can further reduce the patchwork Mura pattern.

[0072] In one example, before dividing the pattern to be printed into at least two printing partitions, the method further includes: setting the X spacing and Y spacing corresponding to the ink parameters according to the ink parameters in the nozzle module of the inkjet printer; printing with the X spacing and Y spacing corresponding to the ink parameters; wherein the X spacing is the spacing distance between two adjacent ink droplets of the nozzle module in the printing direction; and the Y spacing is the spacing distance between two adjacent ink droplets in the moving direction of the nozzle module.

[0073] At this time, the ink parameters (ink characteristics) to be considered, especially the leveling of the ink (the leveling diameter of the ink); different inks have different viscosities, and the diameters of the ink droplets spread out after printing are also different; the X spacing and Y spacing can be set according to the ink parameters, so that adjacent ink droplets can blend together, and the speed of the ink droplets blending around is consistent; to reduce the joint Mura. The above X spacing and Y spacing corresponding to the ink parameters in the nozzle module are empirical values ​​obtained from multiple tests; they can be set manually; or the commonly used inks and their corresponding X spacing and Y spacing can be established. After the corresponding relationship is established, the X spacing and Y spacing corresponding to the ink parameters of the current printing can be automatically called according to the ink parameters.

[0074] In one example, after performing a printing operation on the edge area, the method further includes: obtaining the film layer thickness of the edge area, and determining whether the film layer thickness is within a preset film layer thickness range; if the film layer thickness of the edge area is within the preset film layer thickness range, confirming that the film layer printing of the edge area is qualified.

[0075] At this time, in the actual scenario of inkjet printing, there are often different film thickness requirements; at the same time, by setting a preset film thickness range, it is possible to timely identify whether the film thickness in the edge area is qualified, and the seam Mura pattern can be further reduced.

[0076] In one example, after determining whether the film layer thickness is within a preset film layer thickness range, the method further includes: if the film layer thickness in the edge area is outside the preset film layer thickness range, confirming that the film layer printing in the edge area is unqualified; replacing the preset first ratio and the preset second ratio, and repeatedly performing the printing operation on the substrate until the film layer thickness printed in the edge area is qualified; wherein, replacing the preset first ratio and the preset second ratio specifically includes replacing the preset first ratio with a preset third ratio, and replacing the preset second ratio with a preset fourth ratio.

[0077] This example shows a method of adjusting the thickness of the film layer in the edge area by adjusting the ratio of the ink droplet landing points in the first edge area and the second edge area. It should be pointed out that whether the film thickness is within the preset film thickness range or outside the preset film thickness range, the original ink droplet landing point ratio (the above-mentioned preset first ratio and preset second ratio) can reduce the patchwork Mura in this specification. By setting the preset film thickness range, the film thickness of the edge area can be adjusted (screening the film thickness that meets the requirements), which can adapt to more inkjet printing scenarios and can further reduce the patchwork Mura.

[0078] In addition, the above discussion is all about the ink droplet landing ratio in the edge area. When the ink droplet landing ratio is determined, there are many different patterns in the edge area; in other words, the pattern in the edge area is not fixed at this time. The following is a further discussion on the solution of fixing the pattern in the edge area.

[0079] In one example, before obtaining the film thickness of the edge region, the method further includes: configuring the first edge region as a first edge pattern, and configuring the second edge region as a second edge pattern.

[0080] In the above example, based on the ink droplet landing point ratio already set in the first edge area, the first edge area is configured as a fixed edge pattern; based on the ink droplet landing point ratio already set in the second edge area, the second edge area is configured as a fixed edge pattern; through the fixed edge pattern design, the seam can be further "blurred" to reduce the seam Mura.

[0081] This specification does not limit the pattern shapes of the first edge pattern and the second edge pattern in the edge area; they can be configured according to actual needs.

[0082] by Figure 5B In one example, the edge patterns of the first edge pattern and the second edge pattern include a curved pattern and a straight line pattern. Figure 5BIn the figure, a1 and a2 constitute the edge region 201, the shaded portion in a1 is the first edge pattern, the shaded portion in a2 is the second edge pattern, and the edge patterns in a1 and a1 are straight lines. Figure 5B In the figure, b1 and b2 form the edge area; the shaded part in b1 is the first edge pattern, the shaded part in b2 is the second edge pattern, and both b1 and b2 are curved patterns. Both edge patterns can "blur" the seam and further reduce the seam Mura. The shaded part is the ink droplet landing area 203, and the blank part is the ink droplet non-landing area 202.

[0083] In one example, a method for reducing Mura when edge regions overlap is disclosed. Before obtaining the film thickness of the edge region, the method further includes: configuring the first edge region as a third edge pattern, and configuring the second edge region as a fourth edge pattern; dividing the third edge pattern and the fourth edge pattern into a plurality of rows, and the ink droplet landing rate of any row is a random number; wherein the ink droplet landing rate is the ratio of the number of ink droplets landing in any row to the total number of ink droplets landing, the total number of ink droplets landing includes the number of ink droplets landing and the number of ink droplets not landing, and the sum of the ink droplet landing rates in the same row in the third edge pattern and the fourth edge pattern is 1.

[0084] by Figure 5C For example, W is the printing width of the nozzle module in the inkjet printer, and L is the length of the edge overlapping area after two nozzle prints; the shaded box in the figure is the landing point position, and the non-shaded box is the non-landing point position. Figure 5C In the print width W, the number of lines is only used as an example and there is no limit on the number of lines. a1 is the third edge pattern, and a2 is the fourth edge pattern. The ink droplet landing rate of any line in the print width a1 is random, and the ink droplet landing rate of each line is randomly planned by a random function; the ink droplet landing rate is the number of landing points to the total number (the sum of the number of landing points and the number of non-landing points). For example: the first line in a1 illustrates 7 positions, and the ink droplet landing rate is 3 / 7; the ink droplet landing rate of the second line is 1 / 7; the ink droplet landing rate of the third line is 5 / 7.

[0085] On the basis that the ink droplet landing rate of each line is random, the total ink droplet landing rate of the same line of a1 and a2 is 1. For example: the ink droplet landing rate of the first line in a2 is 4 / 7, and the sum of the ink droplet landing rate of the first line in a1 is 3 / 7 is 1; the ink droplet landing rate of the second line in a2 is 6 / 7, and the sum of the ink droplet landing rate of the second line in a1 is 1 / 7; the ink droplet landing rate of the third line in a2 is 2 / 7, and the sum of the ink droplet landing rate of the third line in a1 is 5 / 7 is 1. In this way, the seam Mura between two adjacent passes can also be reduced.

[0086] In one example, at least two printing zones further include other printing zones, and the other printing zones form a plurality of edge regions; wherein the patterns adopted by any two edge regions are the same or different.

[0087] like Figure 2 As shown, two edge regions are illustrated: edge region 200 and edge region 300. The patterns of the two edge regions may be the same or different. The selection may be made during the actual inkjet printing process, and there is no limitation to this.

[0088] In one example, dividing the pattern to be printed into at least two printing partitions specifically includes: obtaining the size of the substrate to be printed and the single printing size of the nozzle module; and dividing the pattern to be printed into at least two printing partitions according to the substrate size and the single printing size.

[0089] This application can reduce the mura pattern in the seam between two adjacent passes.

[0090] The specification also discloses an inkjet printer. 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 used to communicate with other devices, and the processor is used to execute the instructions stored in the memory so that the inkjet printer performs the following operations:

[0091] Divide the pattern to be printed into at least two printing partitions; wherein one printing partition is a corresponding area printed on the substrate by the nozzle module at a single time, and the at least two printing partitions include a first printing partition and a second printing partition;

[0092] A printing operation is performed on the edge area with a preset first ratio and a preset second ratio; wherein the edge area is an adjacent area of ​​the first printing partition and the second printing partition, the edge area includes the first edge area and the second edge area, the preset first ratio is the ratio of ink droplets printed by the nozzle module for the first time to the ink droplets to be printed in the first edge area, and the preset second ratio is the ratio of ink droplets printed by the nozzle module for the second time to the ink droplets to be printed in the second edge area.

[0093] In one example, a first edge area includes a first sub-edge area and a second sub-edge area; a printing operation is performed in the edge area at a preset first ratio, specifically including: printing the first sub-edge area at a preset first sub-ratio, and printing the second sub-edge area at a preset second sub-ratio; wherein the preset first ratio includes a preset first sub-ratio and a preset second sub-ratio, the preset first sub-ratio is greater than the preset second sub-ratio, the preset first sub-ratio is the ratio of ink droplets printed in the first sub-edge area to ink droplets to be printed in the first edge area, and the preset second sub-ratio is the ratio of ink droplets printed in the second sub-edge area to ink droplets to be printed in the first edge area.

[0094] In one example, the second edge area includes a third sub-edge area and a fourth sub-edge area, and the second sub-edge area is adjacent to the third sub-edge area; a printing operation is performed in the edge area at a preset second ratio, specifically including: printing the third sub-edge area at a preset third sub-ratio, and printing the fourth sub-edge area at a preset fourth sub-ratio; wherein the preset second ratio includes a preset third sub-ratio and a preset fourth sub-ratio, the preset fourth sub-ratio is greater than the preset third sub-ratio, the preset third sub-ratio is the ratio of ink droplets printed in the third sub-edge area to ink droplets to be printed in the second edge area, and the preset fourth sub-ratio is the ratio of ink droplets printed in the fourth sub-edge area to ink droplets to be printed in the second edge area.

[0095] In one example, after performing a printing operation on the edge area, the method further includes: obtaining the film layer thickness of the edge area, and determining whether the film layer thickness is within a preset film layer thickness range; if the film layer thickness of the edge area is within the preset film layer thickness range, confirming that the film layer printing of the edge area is qualified.

[0096] In one example, after determining whether the film layer thickness is within a preset film layer thickness range, the method further includes: if the film layer thickness in the edge area is outside the preset film layer thickness range, confirming that the film layer printing in the edge area is unqualified; replacing the preset first ratio and the preset second ratio, and repeatedly performing the printing operation on the substrate until the film layer thickness printed in the edge area is qualified; wherein, replacing the preset first ratio and the preset second ratio specifically includes replacing the preset first ratio with a preset third ratio, and replacing the preset second ratio with a preset fourth ratio.

[0097] In one example, when there is an overlapped area between the first edge area and the second edge area, the sum of the preset first ratio and the preset second ratio is 80%-120%.

[0098] In one example, when there is no overlapping area between the first edge area and the second edge area, the sum of the preset first ratio and the preset second ratio is 100%-200%.

[0099] In one example, before dividing the pattern to be printed into at least two printing partitions, the method further includes: setting the X spacing and Y spacing corresponding to the ink parameters according to the ink parameters in the nozzle module of the inkjet printer; printing with the X spacing and Y spacing corresponding to the ink parameters; wherein the X spacing is the spacing distance between two adjacent ink droplets of the nozzle module in the printing direction; and the Y spacing is the spacing distance between two adjacent ink droplets in the moving direction of the nozzle module.

[0100] In one example, before obtaining the film thickness of the edge region, the method further includes: configuring the first edge region as a first edge pattern, and configuring the second edge region as a second edge pattern.

[0101] In one example, the edge patterns of the first edge pattern and the second edge pattern include a curved pattern and a straight line pattern.

[0102] In one example, at least two printing zones further include other printing zones, and the other printing zones form a plurality of edge regions; wherein the patterns adopted by any two edge regions are the same or different.

[0103] In one example, dividing the pattern to be printed into at least two printing partitions specifically includes: obtaining the size of the substrate to be printed and the single printing size of the nozzle module; and dividing the pattern to be printed into at least two printing partitions according to the substrate size and the single printing size.

[0104] In one example, before obtaining the film thickness of the edge area, the method also includes: configuring the first edge area as a third edge pattern, and configuring the second edge area as a fourth edge pattern; dividing the third edge pattern and the fourth edge pattern into a plurality of rows, and the ink droplet landing rate of any row is a random number; wherein the ink droplet landing rate is the ratio of the number of ink droplets landing in any row to the total number of ink droplets landing, the total number of ink droplets landing includes the number of ink droplets landing and the number of ink droplets not landing in any row, and the sum of the ink droplet landing rates in the same row in the third edge pattern and the fourth edge pattern is 1.

[0105] It should be noted that: when the device provided in the above embodiment realizes its function, only the division of the above functional modules is used as an example. In actual application, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is 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 embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0106] The specification also discloses a computer-readable storage medium, which stores instructions. When the instructions are executed, any of the above methods is executed.

[0107] This embodiment also discloses an electronic device, which is the above-mentioned inkjet printer. Figure 6 The electronic device may include: at least one processor 601 , at least one communication bus 602 , a user interface 603 , a network interface 604 , and at least one memory 605 .

[0108] The communication bus 602 is used to realize the connection and communication between these components.

[0109] The user interface 603 may include a display screen (Display) and a camera (Camera).

[0110] The network interface 604 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0111] Among them, the processor 601 may include one or more processing cores. The processor 601 uses various interfaces and lines to connect various parts in the entire server, and executes various functions of the server and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 605, and calling data stored in the memory 605. Optionally, the processor 601 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 601 can integrate one or more combinations of a central processing unit 601 (Central Processing Unit, CPU), an image processor 601 (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 601, and it can be implemented by a single chip.

[0112] 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 optionally 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, a user interface module and an application.

[0113] exist Figure 6 In the electronic device shown, the user interface 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 program of the method for calculating the engineering construction cost stored in the memory 605. When executed by one or more processors 601, the electronic device executes one or more methods in the above-mentioned embodiments.

[0114] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present 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 the present application.

[0115] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0116] 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 only schematic, such as the division of units, which is only a logical function division. There may be other division methods in actual implementation, 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 interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0117] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0118] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0119] 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, which is stored in a memory 605 and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform 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 codes, such as a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk.

[0120] The above is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure cannot be limited thereto. That is, any equivalent changes and modifications made according to 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, it will be easy for those skilled in the art to think of other embodiments of the present disclosure. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field that are not recorded in the present disclosure. The description and examples are regarded as exemplary only, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. A method for treating Mura in a seam, characterized in that: The method comprises: Divide the pattern to be printed into at least two printing partitions; wherein one printing partition is a corresponding area printed on the substrate by the nozzle module at a single time, and the at least two printing partitions include a first printing partition and a second printing partition; A printing operation is performed on an edge area with a preset first ratio and a preset second ratio; wherein the edge area is an adjacent area of ​​the first printing partition and the second printing partition, the edge area includes a first edge area and a second edge area, the preset first ratio is the ratio of ink droplets printed by the nozzle module for the first time to ink droplets to be printed in the first edge area, and the preset second ratio is the ratio of ink droplets printed by the nozzle module for the second time to ink droplets to be printed in the second edge area.

2. The processing method according to claim 1, characterized in that: The first edge area includes a first sub-edge area and a second sub-edge area; performing a printing operation in the edge area at a preset first ratio specifically includes: The first sub-edge region is printed at a preset first sub-ratio, and the second sub-edge region is printed at a preset second sub-ratio; wherein, The preset first ratio includes the preset first sub-ratio and the preset second sub-ratio, the preset first sub-ratio is greater than the preset second sub-ratio, the preset first sub-ratio is the ratio of ink droplets printed in the first sub-edge area to the ink droplets to be printed in the first edge area, and the preset second sub-ratio is the ratio of ink droplets printed in the second sub-edge area to the ink droplets to be printed in the first edge area.

3. The processing method according to claim 2, characterized in that: The second edge region includes a third sub-edge region and a fourth sub-edge region, and the second sub-edge region is adjacent to the third sub-edge region; Performing a printing operation in the edge area at a preset second ratio, specifically including: The third sub-edge region is printed at a preset third sub-ratio, and the fourth sub-edge region is printed at a preset fourth sub-ratio; wherein, The preset second ratio includes the preset third sub-ratio and the preset fourth sub-ratio, the preset fourth sub-ratio is greater than the preset third sub-ratio, the preset third sub-ratio is the ratio of ink droplets printed in the third sub-edge area to ink droplets to be printed in the second edge area, and the preset fourth sub-ratio is the ratio of ink droplets printed in the fourth sub-edge area to ink droplets to be printed in the second edge area.

4. The processing method according to claim 1, characterized in that: After performing the printing operation on the edge area, the method further includes: Obtaining the film thickness of the edge area, and determining whether the film thickness is within a preset film thickness range; If the film thickness of the edge region is within the preset film thickness range, it is confirmed that the film printing of the edge region is qualified.

5. The processing method according to claim 4, characterized in that: After determining whether the film thickness is within a preset film thickness range, the method further includes: If the film thickness of the edge region is outside the preset film thickness range, it is determined that the film printing of the edge region is unqualified; Replace the preset first ratio and the preset second ratio, and repeat the printing operation on the substrate until the thickness of the film layer printed in the edge area is qualified; wherein, replacing the preset first ratio and the preset second ratio specifically includes replacing the preset first ratio with a preset third ratio, and replacing the preset second ratio with a preset fourth ratio.

6. The processing method according to claim 1, characterized in that: When the first edge area and the second edge area have an overlapping area, the sum of the preset first ratio and the preset second ratio is 80%-120%; When there is no overlapping area between the first edge area and the second edge area, the sum of the preset first ratio and the preset second ratio is 100%-200%.

7. The processing method according to claim 1, characterized in that: Before dividing the pattern to be printed into at least two printing partitions, the method further includes: According to the ink parameters in the nozzle module of the inkjet printer, the X spacing and Y spacing corresponding to the ink parameters are set; Printing is performed with the X spacing and Y spacing corresponding to the ink parameters; wherein the X spacing is the spacing distance between two adjacent ink drops in the printing direction of the nozzle module; and the Y spacing is the spacing distance between two adjacent ink drops in the moving direction of the nozzle module.

8. The processing method according to claim 4, characterized in that: Before obtaining the film thickness of the edge region, the method further includes: The first edge region is configured as a first edge pattern, and the second edge region is configured as a second edge pattern; wherein edge patterns of the first edge pattern and the second edge pattern include a curved pattern and a straight line pattern.

9. The processing method according to claim 4, characterized in that: Before obtaining the film thickness of the edge region, the method further includes: configuring the first edge region into a third edge pattern, and configuring the second edge region into a fourth edge pattern; The third edge pattern and the fourth edge pattern are divided into several rows, and the ink droplet landing rate of any row is a random number; wherein the ink droplet landing rate is the ratio of the number of ink droplets landing in any row to the total number of ink droplets landing, the total number of ink droplets landing includes the number of ink droplets landing and the number of ink droplets not landing in any row, and the sum of the ink droplet landing rates in the same row of the third edge pattern and the fourth edge pattern is 1.

10. An inkjet printer, characterized in that: The inkjet printer includes a processor, a memory, a user interface, and a network interface, wherein 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 inkjet printer performs the following operations: Divide the pattern to be printed into at least two printing partitions; wherein one printing partition is a corresponding area printed on the substrate by the nozzle module at a single time, and the at least two printing partitions include a first printing partition and a second printing partition; A printing operation is performed on an edge area with a preset first ratio and a preset second ratio; wherein the edge area is an adjacent area of ​​the first printing partition and the second printing partition, the edge area includes a first edge area and a second edge area, the preset first ratio is the ratio of ink droplets printed by the nozzle module for the first time to ink droplets to be printed in the first edge area, and the preset second ratio is the ratio of ink droplets printed by the nozzle module for the second time to ink droplets to be printed in the second edge area.

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