CN116039265A - Nozzle adjusting method and nozzle adjusting system - Google Patents

Nozzle adjusting method and nozzle adjusting system Download PDF

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Publication number
CN116039265A
CN116039265A CN202211567592.6A CN202211567592A CN116039265A CN 116039265 A CN116039265 A CN 116039265A CN 202211567592 A CN202211567592 A CN 202211567592A CN 116039265 A CN116039265 A CN 116039265A
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CN
China
Prior art keywords
printing
nozzle
patterns
difference
openings
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Pending
Application number
CN202211567592.6A
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Chinese (zh)
Inventor
张文林
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TCL Huaxing Photoelectric Technology Co Ltd
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TCL Huaxing Photoelectric Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by TCL Huaxing Photoelectric Technology Co Ltd filed Critical TCL Huaxing Photoelectric Technology Co Ltd
Priority to CN202211567592.6A priority Critical patent/CN116039265A/en
Publication of CN116039265A publication Critical patent/CN116039265A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles

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  • Ink Jet (AREA)

Abstract

The invention provides a nozzle adjusting method and a nozzle adjusting system. The nozzle adjustment method comprises the following steps: acquiring volume information of a plurality of printing patterns; the ink jet printing device comprises a plurality of nozzles, a plurality of printing openings, a plurality of printing modules and a printing control unit, wherein the nozzles of the ink jet printing device are configured to print ink into the printing openings of the printing substrate so as to obtain a plurality of printing patterns, and each printing opening corresponds to one nozzle; and judging whether to adjust at least one nozzle of the inkjet printing device according to the difference of the volume information. In the nozzle adjusting method and the nozzle adjusting system, whether at least one nozzle of the inkjet printing device is adjusted or not is judged according to the difference of volume information of a plurality of printing patterns obtained by printing ink into a plurality of printing openings of a printing substrate by a plurality of nozzles of the inkjet printing device, so that the plurality of nozzles of the inkjet printing device can be reasonably adjusted, and the uniformity of the volume of ink discharged by the nozzles can be improved.

Description

Nozzle adjusting method and nozzle adjusting system
Technical Field
The invention relates to the technical field of display, in particular to a nozzle adjusting method and a nozzle adjusting system.
Background
In the related art, an inkjet printing apparatus is generally used to prepare a light emitting layer of a display panel. The inventors have found that uneven volumes of ink ejected from nozzles of an inkjet printing apparatus may cause uneven display (Mura) on a display panel. The worse the volume uniformity of the printing ink, the more pronounced the Mura is shown. Therefore, reasonable adjustment of the nozzles ensures uniformity of the volume of ink discharged from the nozzles, and is very important for application of inkjet printing technology.
Disclosure of Invention
The embodiment of the invention provides a nozzle adjusting method and a nozzle adjusting system, which can improve the technical problem of poor uniformity of ink volume discharged by a nozzle.
The embodiment of the invention provides a nozzle adjusting method, which comprises the following steps: acquiring volume information of a plurality of printing patterns; the ink jet printing device comprises a plurality of nozzles, a plurality of printing openings, a plurality of printing modules and a printing control unit, wherein the nozzles of the ink jet printing device are configured to print ink into the printing openings of the printing substrate so as to obtain a plurality of printing patterns, and each printing opening corresponds to one nozzle; and judging whether to adjust at least one nozzle of the inkjet printing device according to the difference of the volume information.
In some embodiments, the print substrate includes a plurality of sets of the print openings, each set of the print openings including a plurality of the print openings; each of the nozzles of the inkjet printing apparatus is configured to sequentially print ink into a plurality of the printing openings of a corresponding set of the printing openings of the printing substrate to obtain a plurality of the print patterns.
In some embodiments, adjacent two of the nozzles of the inkjet printing apparatus are configured to sequentially print ink into a plurality of the printing openings of two sets of the printing openings of the printing substrate that are adjacent in a first direction; two groups of printing openings adjacent in the first direction are separated by a first distance in a second direction, the first distance is the nozzle spacing of the ink jet printing device, and the second direction intersects with the first direction.
In some embodiments, each of the nozzles of the inkjet printing apparatus is configured to sequentially print a same volume of ink into a plurality of the printing openings of a corresponding set of the printing openings of the printing substrate to obtain a plurality of the print patterns; the step of judging whether to adjust at least one nozzle of the inkjet printing device according to the difference of a plurality of volume information comprises the following steps: when the difference according to a plurality of the volume information is larger than a difference threshold value, at least one nozzle of the inkjet printing device is adjusted.
In some embodiments, the plurality of nozzles of the inkjet printing apparatus includes a first nozzle and a second nozzle, the plurality of groups of the printing openings of the printing substrate include a first group of the printing openings and a second group of the printing openings, each of the first group of the printing openings and the second group of the printing openings includes a first printing opening and a second printing opening having different volumes, wherein the first nozzle and the second nozzle are respectively configured to sequentially print ink of the same volume into the first printing opening and the second printing opening of the same group, so as to obtain two first printing patterns and two second printing patterns of the plurality of printing patterns; the step of judging whether to adjust at least one nozzle of the inkjet printing device according to the difference of a plurality of volume information comprises the following steps: and judging whether to adjust at least one of the first nozzle and the second nozzle according to the difference of the volume information of the two first printing patterns and the difference of the volume information of the two second printing patterns.
In some embodiments, the step of determining whether to adjust at least one of the first nozzle and the second nozzle according to the difference between the volume information of the two first print patterns and the difference between the volume information of the two second print patterns includes: and adjusting at least one of the first nozzles and the second nozzles when the difference of the volume information of the two first printing patterns and the difference of the volume information of the two second printing patterns are greater than a difference threshold.
In some embodiments, the two nozzles of the inkjet printing device are configured to sequentially print N drops and M drops of ink into the two rows of the printing openings of the two groups of the printing openings of the printing substrate, so as to obtain two third printing patterns and two fourth printing patterns in the plurality of printing patterns, wherein N is not equal to M; the step of judging whether to adjust at least one nozzle of the inkjet printing device according to the difference of a plurality of volume information comprises the following steps: and judging whether to adjust at least one of the two nozzles according to the difference of the volume information of the two third printing patterns and the difference of the volume information of the two fourth printing patterns.
In some embodiments, the step of determining whether to adjust at least one of the two nozzles according to the difference between the volume information of the two third print patterns and the difference between the volume information of the two fourth print patterns includes: and adjusting at least one of the two nozzles when the difference of the volume information of the two third printing patterns and the difference of the volume information of the two fourth printing patterns are larger than a difference threshold.
In some embodiments, the step of obtaining volume information of the plurality of print patterns includes: and acquiring gray scale values of a plurality of printing patterns through an optical detection module, wherein the volume information comprises the gray scale values.
The embodiment of the invention also provides a nozzle adjusting system, which comprises a processor and a memory, wherein the memory is used for storing program instructions, and the processor is used for executing the program instructions to realize the nozzle adjusting method.
In the nozzle adjustment method and the nozzle adjustment system provided by the embodiment of the invention, whether to adjust at least one nozzle of the inkjet printing device is judged according to the difference of volume information of a plurality of printing patterns obtained by printing ink into a plurality of printing openings of a printing substrate by a plurality of nozzles of the inkjet printing device. Therefore, the reasonable adjustment of a plurality of nozzles of the ink-jet printing device can be ensured, and the uniformity of the volume of ink discharged by the nozzles can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of an inkjet printing apparatus according to an embodiment of the present invention in which nozzles perform inkjet printing on a print substrate;
FIG. 2 is a flow chart of a nozzle adjusting method according to an embodiment of the invention;
FIG. 3 is a schematic diagram of an optical detection module according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a printing substrate according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of an inkjet printing apparatus according to an embodiment of the present invention in which nozzles perform inkjet printing on a print substrate;
fig. 6A-6B are schematic diagrams of inkjet printing of nozzles of an inkjet printing apparatus according to an embodiment of the present invention on a printing substrate;
FIG. 6C is a flow chart of step S2 of the nozzle adjusting method according to the embodiment of the invention;
fig. 7A-7B are schematic diagrams of inkjet printing of nozzles of an inkjet printing apparatus according to an embodiment of the present invention on a printing substrate;
fig. 7C is a flowchart of step S2 of the nozzle adjusting method according to the embodiment of the present invention;
FIG. 8A is a flow chart of step S2 of a nozzle adjusting method according to an embodiment of the invention;
fig. 8B is a schematic structural view of a nozzle of an inkjet printing apparatus according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the invention. In the present invention, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
As shown in fig. 1-2, an embodiment of the present invention provides a nozzle adjusting method for adjusting a plurality of nozzles 2011 of an inkjet printing apparatus. The ink jet printing apparatus can be used for ink jet printing in the display field. For example, the inkjet printing apparatus can be used for inkjet printing of Organic Light-Emitting Diode (OLED) devices. Specifically, the inkjet printing apparatus can be used for inkjet printing of a hole injection layer, a hole transport layer, an organic light emitting layer, an electron injection layer, an electron transport layer, and the like of an OLED device.
The nozzle adjustment method comprises the following steps:
s1, acquiring volume information of a plurality of printing patterns 301; the plurality of nozzles 2011 of the inkjet printing apparatus are configured to print ink into the plurality of printing openings 101 of the printing substrate 100 to obtain a plurality of printing patterns 301, and each of the printing openings 101 corresponds to one of the nozzles 2011.
Wherein the printing substrate 100 includes a substrate 103 and a bank layer 104 (bank layer) on the substrate 103. The bank layer 104 is provided with a plurality of the print openings 101. The printing substrate 100 is a 1cell-1nozzle dedicated substrate, such that each of the printing openings 101 corresponds to one of the nozzles 2011, i.e., each of the nozzles 2011 prints ink in one of the printing openings 101 at a time. Illustratively, the plurality of nozzles 2011 of the inkjet printing apparatus are configured to print the same volume of ink into the plurality of print openings 101 of the print substrate 100 to obtain a plurality of print patterns 301.
The volume information includes gray scale values, which may be generated by an optical detection module (see fig. 3). The optical detection module may include a camera 2022, a light-compensating lamp 2021, and a detection feedback unit, among others. The light-compensating lamp 2021 may compensate light for a plurality of the print patterns 301 of the print substrate 100, the camera 2022 may collect image information of a plurality of the print patterns 301, and the detection feedback system unit may process the image information to obtain gray scale values of a plurality of the print patterns 301.
S2, judging whether to adjust at least one nozzle 2011 of the inkjet printing device according to the difference of the volume information.
For example, it may be determined whether to adjust at least one nozzle 2011 of the inkjet printing device according to whether the difference of the plurality of volume information is smaller than a difference threshold, such as 2%, so as to adjust the volumes of ink ejected by the plurality of nozzles 2011 at a time. Further, when the difference between the plurality of volume information is greater than a difference threshold, at least one nozzle 2011 of the inkjet printing apparatus is adjusted.
In the nozzle adjustment method provided in the present embodiment, whether to adjust at least one nozzle 2011 of the inkjet printing apparatus is determined according to a difference in volume information of a plurality of print patterns 301 obtained by printing ink into a plurality of print openings 101 of the print substrate 100 by a plurality of nozzles 2011 of the inkjet printing apparatus. Thus, the adjustment of the plurality of nozzles 2011 of the inkjet printing apparatus can be made more reasonable, and the uniformity of the volume of ink discharged from the nozzles 2011 can be improved.
In some embodiments, referring to fig. 4-5, the printing substrate 100 has a plurality of printing areas 102. The print substrate 100 includes a plurality of sets of the print openings in a plurality of the print areas 102, each set of the print openings including a plurality of the print openings 101. Each of the nozzles 2011 of the inkjet printing apparatus is configured to sequentially print ink into a plurality of the printing openings 101 of a corresponding set of the printing openings of the printing substrate 100 to obtain a plurality of the printing patterns 301. Wherein, the plurality of nozzles 2011 may print the same volume of ink in a single printing to form the plurality of printing patterns 301. The plurality of nozzles 2011 may print different volumes of ink at a single printing to form the plurality of print patterns 301. In this way, each of the nozzles 2011 can perform printing a plurality of times by continuously moving, and the reliability of the volume information of the print pattern 301 formed by the nozzles 2011 is ensured.
In some embodiments, referring to fig. 4, two adjacent nozzles 2011 of the inkjet printing apparatus are configured to sequentially print ink into a plurality of the printing openings 101 of two adjacent sets of the printing openings of the printing substrate 100 in the first direction x. Two groups of adjacent printing openings in the first direction x are separated by a first distance d in a second direction y, wherein the first distance d is the nozzle spacing of the inkjet printing device, and the second direction y intersects with the first direction x. Illustratively, the first direction x is a row direction and the second direction y is a column direction. In this way, it is convenient for each of the nozzles 2011 to perform printing a plurality of times by constantly moving.
In some embodiments, referring to fig. 6A-6B, the plurality of nozzles 2011 of the inkjet printing apparatus includes a first nozzle 2013 and a second nozzle 2014. The plurality of sets of the printing openings of the printing substrate 100 include a first set of the printing openings and a second set of the printing openings, each of the first set of the printing openings and the second set of the printing openings including a first printing opening 107 and a second printing opening 108 having different volumes. Illustratively, the volume of the first print opening 107 is greater than the volume of the second print opening 108. Wherein fig. 6A-6B collectively show: the first nozzles 2013 and the second nozzles 2014 are respectively configured to sequentially print the same volume of ink into the first printing openings 107 and the second printing openings 108 of the same group, so as to obtain two first printing patterns 303 and two second printing patterns 304 in the plurality of printing patterns 301.
Further, referring to fig. 6C, the step S2 includes:
s20, determining whether to adjust at least one of the first nozzles 2013 and the second nozzles 2014 according to the difference of the volume information of the two first print patterns 303 and the difference of the volume information of the two second print patterns 304.
Illustratively, at least one of the first and second nozzles 2013, 2014 is adjusted when the difference in the volume information of the two first print patterns 303 and the difference in the volume information of the two second print patterns 304 is greater than a difference threshold, such as 2%. Thus, the difference of the volume information under the openings with different volumes can be obtained, and the accurate judgment of the difference of the volume information is facilitated.
In some embodiments, referring to fig. 7A-7B, the two nozzles 2011 of the inkjet printing apparatus are configured to print N drops and M drops of ink into the two rows of the printing openings 101 of the two groups of the printing openings of the printing substrate 100 in sequence, so as to obtain two third printing patterns 305 and two fourth printing patterns 306 of the plurality of printing patterns 301, where N is not equal to M. Illustratively, n=1, m=2.
Further, referring to fig. 7C, the step S2 includes:
s21, determining whether to adjust at least one of the two nozzles 2011 according to the difference between the volume information of the two third print patterns 305 and the difference between the volume information of the two fourth print patterns 306.
Illustratively, at least one of the two nozzles 2011 is adjusted when the difference in the volume information of the two third print patterns 305 and the difference in the volume information of the two fourth print patterns 306 is greater than a difference threshold. Thus, the difference of volume information under different amounts of ink can be obtained, and the accurate judgment of the difference of the volume information is facilitated.
In some embodiments, referring to fig. 8A-8B, the step S2 includes:
s22, judging whether to adjust the voltage waveform of at least one nozzle 2011 of the inkjet printing device according to the difference of the volume information so as to control the volume of the ink ejected by the nozzle 2011.
The volume of ink ejected from the nozzle 2011 can be finely adjusted by adjusting the applied voltage waveform. As the voltage waveform changes, the piezoelectric ceramic material 2012 of the nozzle 2011 may deform, and the micro-cavity of the nozzle 2011 may change in pressure, so that the volume of the ink ejected from the nozzle 2011 may change accordingly.
Embodiments of the present invention also provide a nozzle adjustment system including the printing substrate 100 as described above, an optical detection module, a processor for storing program instructions, and a memory for executing the program instructions to implement the nozzle adjustment method as described above.
The foregoing has outlined rather broadly the more detailed description of embodiments of the invention, wherein the principles and embodiments of the invention are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present invention, the present description should not be construed as limiting the present invention.

Claims (10)

1. A nozzle adjustment method, comprising:
acquiring volume information of a plurality of printing patterns; the ink jet printing device comprises a plurality of nozzles, a plurality of printing openings, a plurality of printing modules and a printing control unit, wherein the nozzles of the ink jet printing device are configured to print ink into the printing openings of the printing substrate so as to obtain a plurality of printing patterns, and each printing opening corresponds to one nozzle;
and judging whether to adjust at least one nozzle of the inkjet printing device according to the difference of the volume information.
2. The nozzle adjustment method of claim 1, wherein the print substrate comprises a plurality of sets of the print openings, each set of the print openings comprising a plurality of the print openings; each of the nozzles of the inkjet printing apparatus is configured to sequentially print ink into a plurality of the printing openings of a corresponding set of the printing openings of the printing substrate to obtain a plurality of the print patterns.
3. The nozzle adjustment method according to claim 2, wherein adjacent two of the nozzles of the inkjet printing apparatus are configured to sequentially print ink into a plurality of the printing openings of two sets of the printing openings adjacent in the first direction of the printing substrate; two groups of printing openings adjacent in the first direction are separated by a first distance in a second direction, the first distance is the nozzle spacing of the ink jet printing device, and the second direction intersects with the first direction.
4. A nozzle adjustment method according to claim 3, wherein each of the nozzles of the inkjet printing apparatus is configured to sequentially print the same volume of ink into a plurality of the printing openings of a corresponding set of the printing openings of the printing substrate to obtain a plurality of the print patterns;
the step of judging whether to adjust at least one nozzle of the inkjet printing device according to the difference of a plurality of volume information comprises the following steps:
when the difference according to a plurality of the volume information is larger than a difference threshold value, at least one nozzle of the inkjet printing device is adjusted.
5. The method of claim 2, wherein the plurality of nozzles of the inkjet printing apparatus comprises a first nozzle and a second nozzle, the plurality of sets of the printing openings of the printing substrate comprises a first set of the printing openings and a second set of the printing openings, each of the first set of the printing openings and the second set of the printing openings comprises a first printing opening and a second printing opening having different volumes, wherein the first nozzle and the second nozzle are respectively configured to sequentially print ink of the same volume into the first printing opening and the second printing opening of the same set to obtain two first printing patterns and two second printing patterns of the plurality of printing patterns;
the step of judging whether to adjust at least one nozzle of the inkjet printing device according to the difference of a plurality of volume information comprises the following steps:
and judging whether to adjust at least one of the first nozzle and the second nozzle according to the difference of the volume information of the two first printing patterns and the difference of the volume information of the two second printing patterns.
6. The method of adjusting nozzles according to claim 5, wherein the step of determining whether to adjust at least one of the first nozzle and the second nozzle based on the difference in the volume information of the two first print patterns and the difference in the volume information of the two second print patterns comprises:
and adjusting at least one of the first nozzles and the second nozzles when the difference of the volume information of the two first printing patterns and the difference of the volume information of the two second printing patterns are greater than a difference threshold.
7. The nozzle adjustment method according to claim 2, wherein two of the nozzles of the inkjet printing apparatus are configured to sequentially print N drops and M drops of ink into two rows of the printing openings of two groups of the printing openings of the printing substrate to obtain two third printing patterns and two fourth printing patterns among the plurality of printing patterns, N being not equal to M;
the step of judging whether to adjust at least one nozzle of the inkjet printing device according to the difference of a plurality of volume information comprises the following steps:
and judging whether to adjust at least one of the two nozzles according to the difference of the volume information of the two third printing patterns and the difference of the volume information of the two fourth printing patterns.
8. The method of adjusting nozzles according to claim 7, wherein the step of determining whether to adjust at least one of the two nozzles based on the difference in the volume information of the two third print patterns and the difference in the volume information of the two fourth print patterns includes:
and adjusting at least one of the two nozzles when the difference of the volume information of the two third printing patterns and the difference of the volume information of the two fourth printing patterns are larger than a difference threshold.
9. The method of nozzle adjustment according to claim 1, wherein the step of acquiring volume information of a plurality of print patterns comprises:
and acquiring gray scale values of a plurality of printing patterns through an optical detection module, wherein the volume information comprises the gray scale values.
10. A nozzle adjustment system comprising a processor and a memory, the memory for storing program instructions, the processor for executing the program instructions to implement the nozzle adjustment method of any one of claims 1-9.
CN202211567592.6A 2022-12-07 2022-12-07 Nozzle adjusting method and nozzle adjusting system Pending CN116039265A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211567592.6A CN116039265A (en) 2022-12-07 2022-12-07 Nozzle adjusting method and nozzle adjusting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211567592.6A CN116039265A (en) 2022-12-07 2022-12-07 Nozzle adjusting method and nozzle adjusting system

Publications (1)

Publication Number Publication Date
CN116039265A true CN116039265A (en) 2023-05-02

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ID=86113870

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211567592.6A Pending CN116039265A (en) 2022-12-07 2022-12-07 Nozzle adjusting method and nozzle adjusting system

Country Status (1)

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CN (1) CN116039265A (en)

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