CN116728767A

CN116728767A - Film printing method and device, electronic equipment and storage medium

Info

Publication number: CN116728767A
Application number: CN202210208654.8A
Authority: CN
Inventors: 付东; 许剑; 孙贤文
Original assignee: Guangdong Juhua Printing Display Technology Co Ltd
Current assignee: Guangdong Juhua Printing Display Technology Co Ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2023-09-12

Abstract

The invention discloses a film printing method, a film printing device, electronic equipment and a storage medium; the invention can acquire the volume data of the printing equipment when the printing nozzle prints the material; classifying the printing nozzles based on the volume data of the printing nozzles when the printing nozzles print materials to obtain the categories of the printing nozzles; the printing nozzles are controlled to print material on the substrate based on the type of the printing nozzles so as to form a film layer. In the invention, the volume data of the material when the printing nozzle prints is obtained through analysis, and the printing nozzle is classified based on the volume data; and then controlling the printing nozzle to print based on the type of the printing nozzle, so that the thickness of the formed film layer is more uniform. Therefore, the stability of the device can be improved by the scheme.

Description

Film printing method and device, electronic equipment and storage medium

Technical Field

The invention relates to the technical field of electronic science, in particular to a film printing method, a film printing device, electronic equipment and a storage medium.

Background

In recent years, inkjet printing technology (Inkjet Printing Technology) has been rapidly developed. The ink jet printing technology mainly uses the nozzles on the ink jet printing head to print the ink solution in the ink box into the pixel pits of the substrate, and forms a film layer after drying, wherein the film layer is a component part of a plurality of devices; the ink jet printing technology has high material utilization rate and lower cost, is not limited by the size of the substrate, and can be suitable for printing substrates with various sizes. Therefore, the Organic Light-Emitting Diode (OLED) device can be applied to various display technical fields, and particularly to a large-size Organic Light-Emitting Diode (OLED) device and a quantum dot Light-Emitting Diode (Quantum Dot Light Emitting Diodes, QLED) device.

However, the thickness difference of the film layer is large after the ink printed in the pixel pits of the substrate is dried to form a film, and the stability of the device is affected.

Disclosure of Invention

The invention provides a film printing method, a device, electronic equipment and a storage medium, which can enable the thickness of a formed film to be more consistent, thereby improving the stability of a device.

The invention provides a film printing method, which comprises the following steps:

acquiring volume data of printing equipment when printing a material by a printing nozzle;

classifying the printing nozzles based on the volume data of the printing nozzles when the printing nozzles print materials to obtain the categories of the printing nozzles;

the printing nozzles are controlled to print material on the substrate based on the type of the printing nozzles so as to form a film layer.

The invention also provides a film printing device, which comprises:

a volume acquisition unit that acquires volume data of a printing apparatus when printing a material by a printing nozzle;

the classification unit is used for classifying the printing nozzles based on the volume data when the printing nozzles print the material to obtain the types of the printing nozzles;

and a category control unit for controlling the printing nozzles to print the material on the substrate based on the categories of the printing nozzles so as to form the film layer.

In some embodiments, the substrate includes at least one unit to be printed, and the category control unit is specifically configured to:

determining a target volume of material required by a unit to be printed;

based on the target volume and the type of print nozzle, the print nozzle is controlled to print material into the unit to be printed.

In some embodiments, the categories of printing nozzles include a volume category and a stability category, the category control unit being specifically configured to:

determining the printing times corresponding to the unit to be printed based on the target volume and the volume type;

based on the number of prints and the stability category, the printing nozzles are controlled to print material into the unit to be printed so as to form a film layer.

In some embodiments, the stability category comprises at least one subcategory, the category control unit being specifically configured to:

dividing the printing times into at least one sub-times based on the sub-categories, wherein the sub-times correspond to the sub-categories;

and controlling the printing nozzles corresponding to the sub-categories to print materials into the units to be printed based on the sub-times corresponding to the sub-categories.

In some embodiments, when the substrate is a display device substrate, the unit to be printed is a pixel pit corresponding to a sub-pixel on the display device substrate.

In some embodiments, the volume acquisition unit is specifically configured to:

Acquiring at least one sample volume corresponding to each printing nozzle of the printing equipment, wherein the sample volume is the total volume of materials printed by the printing nozzles for a preset number of times, and the preset number of times is at least more than or equal to 2;

and carrying out statistical analysis on the sample volume to obtain volume data when the printing nozzle prints the material.

In some embodiments, the film printing device is further configured to:

determining an actual volume value of the printing nozzle for each printing of material;

the volume data comprises a volume standard deviation and a volume average value, and the statistical analysis is carried out on the sample volume to obtain the volume data of each printing material of the printing nozzle, and the method comprises the following steps:

determining a volume average value corresponding to the printing nozzle based on the sample volume and the preset times;

and determining the volume standard deviation corresponding to the printing nozzle based on the volume average value and the actual volume value.

In some embodiments, the categories of printing nozzles include a volume category and a stability category, the volume data includes a volume standard deviation and a volume average, and the classification unit is specifically configured to:

coarse classification is carried out on the printing nozzles based on the volume average value, so that the volume types of the printing nozzles are obtained;

and on the basis of the volume standard deviation, finely classifying the printing nozzles corresponding to the volume types to obtain the stable types of the printing nozzles.

In some embodiments, the stability categories include a first stability subclass, a second stability subclass, a third stability subclass, and an instability subclass, the classification unit being specifically for:

determining a stability class of the printing nozzle as a first stability subclass when the volume standard deviation is not greater than a first standard deviation threshold;

determining a stability class of the print nozzles as a second stability subclass when the volumetric standard deviation is greater than the first standard deviation threshold and not greater than the second standard deviation threshold;

determining a stability class of the print nozzles as a third stability subclass when the volumetric standard deviation is greater than the second standard deviation threshold and not greater than the third standard deviation threshold;

when the volumetric standard deviation is greater than the third standard deviation threshold, the stability class of the print nozzle is determined to be an instability subclass.

acquiring the type of a printing nozzle of the printing equipment, wherein the type of the printing nozzle is used for representing the volume of the material and the stability of the volume when the printing nozzle prints the material;

The invention also provides a film printing device, which comprises:

a category acquiring unit that acquires a category of a printing nozzle of the printing apparatus, the category of the printing nozzle being used to represent a volume of a material and a stability of the volume when the printing nozzle prints the material;

And a category control unit controlling the printing nozzles to print a material on the substrate based on the categories of the printing nozzles so as to form a film layer.

determining a target volume of material required by a unit to be printed;

The invention also provides an electronic device, which comprises a memory and a processor, wherein the memory stores a plurality of instructions; the processor loads instructions from the memory to execute steps in any film printing method provided by the invention.

The present invention also provides a computer readable storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps of any of the film printing methods provided by the present invention.

The invention can acquire the volume data of the printing equipment when the printing nozzle prints the material; classifying the printing nozzles based on the volume data of the printing nozzles when the printing nozzles print materials to obtain the categories of the printing nozzles; the printing nozzles are controlled to print material on the substrate based on the type of the printing nozzles so as to form a film layer.

In the invention, the thickness of the formed film layer can be more uniform by acquiring the volume data when the printing nozzles print the material, classifying the printing nozzles based on the volume data, and controlling the printing nozzles based on the classification of the printing nozzles. Therefore, the stability of the device can be improved by the scheme.

Drawings

In order to more clearly illustrate the technical solutions 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. 1a is a schematic view of a film printing method according to the present invention;

FIG. 1b is a schematic flow chart of a film printing method according to the present invention;

FIG. 2 is a schematic flow chart of another film printing method according to the present invention;

FIG. 3a is a schematic diagram of a printing apparatus according to the present invention;

FIG. 3b is a schematic flow chart of the film printing method of the present invention applied to OLED/QLED;

FIG. 3c is a schematic view of a substrate according to the present invention;

FIG. 3d is a schematic diagram of a sub-region of a pixel pit provided by the present invention;

FIG. 3e is a schematic illustration of a sub-area printed for a different type of nozzle provided by the present invention;

FIG. 3f is a schematic illustration of a sub-area printed for a different type of nozzle provided by the present invention;

FIG. 3g is a schematic illustration of a sub-area printed for a different type of nozzle provided by the present invention;

FIG. 3h is a schematic illustration of a sub-area printed for a different type of nozzle provided by the present invention;

FIG. 3i is a graph of the lighting effect of a device printed by the film printing method provided by the invention;

FIG. 3j is a graph of the lighting effect of other devices printed without improvement provided by the present invention;

FIG. 4 is a schematic diagram of a film printing apparatus according to the present invention;

fig. 5 is a schematic structural diagram of an electronic device provided by the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.

The invention provides a film printing method, a film printing device, electronic equipment and a storage medium.

The film printing device can be integrated in electronic equipment, and the electronic equipment can be a terminal, a server and other equipment. The terminal can be printing equipment, a mobile phone, a tablet personal computer, intelligent Bluetooth equipment, a notebook computer, a desktop computer (computer) or the like; the server may be a single server or a server cluster composed of a plurality of servers. In some embodiments, the server may also be implemented in the form of a terminal.

In some embodiments, the film printing apparatus may also be integrated into a plurality of electronic devices, for example, the film printing apparatus may be integrated into a printing device and a computer, and the film printing method of the present invention is jointly implemented by the printing device and the computer.

For example, referring to fig. 1a, a schematic view of a film printing method provided by the present invention includes a printing device and a computer. The number is merely an example, and can be customized according to the situation in practical application. Wherein the printing device can comprise at least one printing head, and the printing head comprises a plurality of printing nozzles, and the plurality of printing nozzles refer to two or more printing nozzles. In some embodiments, the printing device may be an inkjet printing device; the printing head is an ink-jet printing head, and comprises an ink box for containing materials; the inkjet printing apparatus may further include a motor and a rail on which the motor may control the inkjet printhead to move. In some embodiments, the computer may be a stand-alone electronic device that establishes an information link with the printing device, so that information interaction between the printing device and the computer may occur at any time. The computer may also be a central control system on the printing device.

The following will describe in detail. The numbers of the following examples are not intended to limit the preferred order of the examples.

In this embodiment, a film printing method is provided, as shown in fig. 1b, and the specific flow of the film printing method may be as follows:

110. volume data of a printing device is acquired when printing a material by a printing nozzle.

The material may be any material that can be used for printing, such as a liquid material. In some embodiments, the material may be a solution of an organic material or an inorganic material after dispersion or dissolution; for example, light-emitting organic materials (such as iridium-containing phosphorescent polymers, 9-vinylcarbazole, etc.) or inorganic materials (such as transition metal oxides MoO3, WO3, V2O5, etc.) can be used for manufacturing display devices.

The volume data may be used to represent the change in volume of material each time the printing nozzle prints, and may be represented using any statistical analysis, such as the mean, standard deviation, variance, mean square error, etc. of the volumes.

In some embodiments, the acquiring the volume data of the printing device when the printing nozzle prints the material may include, but is not limited to, the following steps:

1. At least one sample volume corresponding to each printing nozzle of the printing device is obtained, wherein the sample volume is the total volume of materials printed by the printing nozzles for a preset number of times.

Wherein, the preset times can be set by user definition according to the actual application condition. In some implementations, the preset number of times is at least 2 or more; for example, the value n of the preset number of times may be any positive integer greater than or equal to 2, for example, n may be 20, 30, 50, 100, etc.

In some embodiments, a volume measuring device may be used to collect material printed a preset number of times for each print nozzle, and the total volume thereof is measured separately and recorded as the sample volume V of the print nozzle. For example, taking an inkjet printing apparatus as an example, for convenience of description, a liquid material contained in an ink cartridge of a printhead may be referred to as ink, and nozzle printing of ink once may be referred to as ink droplet. Assuming an inkjet printhead having 200 nozzles, nozzle numbers are nozle 1, nozle 2, nozle 3, …, nozle 198, nozle 199, nozle 200 in that order. Taking a Nozzle with the number of Nozle 1 to spray 100 ink drops, collecting and measuring the total volume V1 of the Nozzle with the number of Nozle 1 to spray 100 ink drops by a volume measuring device, wherein the V1 is the sample volume of the Nozzle with the number of Nozle 1. Likewise, sample volumes of other nozzles may be obtained.

In some embodiments, a volumetric measurement device may also be used to collect actual values of volume for each print nozzle each time material is printed.

It should be noted that, the printing in the present invention may be a process in which the printing nozzle fills the material on the substrate in a manner of spraying, dripping, flowing, or the like to form the film layer.

2. And carrying out statistical analysis on the sample volume to obtain the volume data of each printing material of the printing nozzle.

In some embodiments, the volumetric data may include a volumetric mean and a volumetric standard deviation. Statistical analysis of the sample volume to obtain volumetric data for each printing of material by the printing nozzle may include, but is not limited to, the steps of:

i. an actual volume value of the printing nozzle is determined for each printing of material.

ii. And determining a volume average value corresponding to the printing nozzle based on the sample volume and the preset times. In some embodiments, the sample volume may be divided by the preset number of times to obtain a volume average. For example, the Nozzle number Nozle 1 corresponds to a volume average μ1 of V1/n. Similarly, volume averages μ2, μ3, …, μ198, μ199, and μ200 for 200 nozzles can be obtained, respectively.

And iii, determining the volume standard deviation corresponding to the printing nozzle based on the volume average value and the actual volume value. The smaller the value of the standard deviation of the volumes of the printing nozzles, the smaller the difference in volumes of the materials each time the printing nozzles print, the more stable the printing nozzles. In some embodiments, the actual volume value of the printing nozzle per printing of material may be recorded and the volume standard deviation σ calculated based on the volume average μ, a preset number of times n. For example, the volume standard deviation is calculated using the following formula.

Where x may represent the actual volume value of the ink printed by the nozzle each time, μmay represent the volume average of the ink printed by the nozzle a preset number of times, n may represent the preset number of times, and σ may represent the volume standard deviation of the ink printed by the nozzle a preset number of times. Similarly, the standard deviations of volumes corresponding to 200 nozzles are σ1, σ2, σ3, σ4, …, σ198, σ199, and σ200, respectively, can be obtained.

120. And classifying the printing nozzles based on the volume data when the printing nozzles print the material, so as to obtain the categories of the printing nozzles.

Wherein the class of printing nozzles may be used to represent the volume of material and the stability of the volume of the printing nozzles when printing the material.

In some embodiments, the categories of printing nozzles include a volume category and a stability category, the volume data includes a volume standard deviation and a volume average, the printing nozzles are classified based on the volume data to obtain the categories of printing nozzles, which may include, but are not limited to, the steps of:

1. and (3) roughly classifying the printing nozzles based on the volume average value to obtain the volume types of the printing nozzles. Wherein, the volume type is used for representing the volume of the material when the printing nozzle prints the material, the type number of the volume type is not limited, for example, the type number can be 4, 5, 8, etc.; for example, the volume categories may be 4 picoliter print nozzles, 5 picoliter print nozzles, 8 picoliter print nozzles, and the like.

In some embodiments, print nozzles having the same volume average value may be classified into the same class. For example, assuming that the volume average values of the nozzles nozle 1 to nozle 20 are 4 picoliters, the nozzles nozle 1 to nozle 20 are classified into the same type, and the volume type of the nozzles nozle 1 to nozle 20 can be recorded as a. Similarly, other nozzle volume categories may be obtained.

In some embodiments, parameters of the printing device may be configured, and the parameters of the printing device may include a volume class, from which the volume class is derived.

2. And on the basis of the volume standard deviation, finely classifying the printing nozzles corresponding to the volume types to obtain the stable types of the printing nozzles. Wherein the stability category is used to denote the stability of the volume of the material when the printing nozzle is printing the material, the stability category comprises at least one sub-category, which may be for example 4, 5, 8 sub-categories, etc.

In some embodiments, taking the 4-seed class as an example, the stability class may include a first stability subclass, a second stability subclass, a third stability subclass, and an instability subclass, where the stability of the volume gradually decreases each time the printing nozzle corresponding to the first stability subclass to the instability subclass prints material.

Determining a stability class of the printing nozzle as a first stability subclass when the volume standard deviation is not greater than a first standard deviation threshold; the first stability subclass may be denoted as class a. The first standard deviation threshold may be set in a user-defined manner according to practical application, for example, may be 2%, 1%, etc.

Determining a stability class of the print nozzles as a second stability subclass when the volumetric standard deviation is greater than the first standard deviation threshold and not greater than the second standard deviation threshold; the first stability subclass may be denoted as class B. The second standard deviation threshold may be set in a customized manner according to practical application, for example, may be 3%, 4%, etc.

Determining a stability class of the print nozzles as a third stability subclass when the volumetric standard deviation is greater than the second standard deviation threshold and not greater than the third standard deviation threshold; the first stability subclass may be denoted as class C. The third standard deviation threshold may be set in a customized manner according to practical application, for example, may be 5%, 6%, etc.

Determining a stability class of the printing nozzle as an instability subclass when the volume standard deviation is greater than a third standard deviation threshold; the first stability subclass may be denoted as class D.

For example, 200 nozzles may be classified according to the sizes of the volume standard deviations σ1, σ2, σ3, σ4, …, σ198, σ199, σ200, the stability class of nozzles having a volume standard deviation between 0 and 2% may be determined as class a, the stability class of nozzles having a volume standard deviation between 2% and 4% may be determined as class B, the stability class of nozzles having a volume standard deviation between 4% and 6% may be determined as class C, and the stability class of nozzles exceeding 6% may be determined as class D; thus, 200 nozzles of an inkjet printhead can be classified into 4 categories, A/B/C/D. The standard deviation of the volume of the type A nozzle is the smallest, the volume stability of the ink sprayed each time is the best, the volume stability of the ink sprayed each time of the type B nozzle is the inferior, the volume stability of the ink sprayed each time of the type C nozzle is a little worse, and the volume stability of the ink sprayed each time of the type D nozzle is the worst.

For another example, the stability class of the nozzles with the volume standard deviation between 0 and 1% may be determined as class a, the stability class of the nozzles with the volume standard deviation between 1 and 2% may be determined as class B, the stability class of the nozzles with the volume standard deviation between 2 and 3% may be determined as class C, the stability class of the nozzles with the volume standard deviation between 3 and 4% may be determined as class D, the stability class of the nozzles with the volume standard deviation between 4 and 5% may be determined as class E, and the stability class of the nozzles exceeding 5% may be determined as class F; thus, 200 nozzles of an inkjet printhead can be classified into 6 categories, A/B/C/D/E/F.

In some embodiments, the categories of print nozzles may also include only the stability categories described above or the volume categories described above. For example, when the volume average values of all the printing nozzles are not greatly different, the printing nozzles may be classified only by the volume standard deviation.

130. The printing nozzles are controlled to print material on the substrate based on the type of the printing nozzles so as to form a film layer.

The substrate may be a rigid substrate material or a flexible substrate material, and may be, for example, transparent plastic, glass (e.g., indium tin oxide glass), metal foil, or the like. In some embodiments, the substrate may be a display device substrate for fabricating a display device.

The film layer may be a film formed of a material. In some embodiments, the multilayer film layer may constitute a display device; for example, the film layer may be a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an emission layer (EML), an Electron Transport Layer (ETL), and the like of the organic light emitting diode.

In some embodiments, the print nozzles that can participate in printing may be determined based on the categories of the print nozzles, and the print nozzles that can participate in printing may be controlled to uniformly print material on the substrate so as to form the film layer. For example, it is determined that the printing nozzles which can participate in printing are the type a nozzles, the type a nozzles are controlled to perform printing of the entire substrate, and the type B/type C/type D nozzles do not participate in printing. For another example, determining that the printing nozzles capable of participating in printing are a type A nozzle, a type B nozzle and a type C nozzle, and controlling the type A nozzle, the type B nozzle and the type C nozzle to participate in printing together; and because the volume deviation of ink drops ejected by the D-type nozzles is larger, the D-type nozzles are forbidden to participate in printing.

In some embodiments, the substrate may include at least one unit to be printed, which may be the smallest unit that requires the filling material. In some embodiments, when the substrate is a display device substrate, the unit to be printed is a pixel pit corresponding to a sub-pixel on the display device substrate. The display device may be composed of a pixel array, and the pixels may be pixel pits corresponding to red, green and blue 3 sub-pixels.

Controlling the printing nozzles to print material on the substrate based on the type of printing nozzles may include, but is not limited to, the steps of:

1. a target volume of material required for the unit to be printed is determined. In some embodiments, parameters of the substrate may be configured, and the target volume may be obtained from the parameters of the substrate. In some embodiments, the target volume of material required for the unit to be printed may also be measured.

2. Based on the target volume and the type of print nozzle, the print nozzle is controlled to print material into the unit to be printed.

In some embodiments, controlling the printing nozzles to print material into the unit to be printed based on the target volume and the type of printing nozzles may include, but is not limited to, the steps of:

i. and determining the printing times corresponding to the unit to be printed based on the target volume and the volume type. In some embodiments, the target volume type printing nozzle may be determined according to the target volume and the volume type, and the number of prints corresponding to the unit to be printed may be calculated according to the volume average value of the target volume and the target volume type printing nozzle. For example, the target volume is 48 picoliters, and the volume class includes printing nozzles corresponding to a volume average value of 4 picoliters and printing nozzles corresponding to a volume average value of 5 picoliters; the target volume type printing nozzle is determined to be the printing nozzle with the volume average value of 4 picoliters, and the average printing time of each unit to be printed is calculated to be 12 times, namely the printing time is 12 times.

ii. Based on the number of prints and the stability category, the printing nozzles are controlled to print material into the unit to be printed so as to form a film layer.

In some embodiments, among the target volume class print nozzles, a print nozzle that can participate in printing is determined based on the stability class. In some embodiments, the printing nozzles which can participate in printing are determined to be the printing nozzles corresponding to the first stable subclass, and the printing nozzles which can participate in printing are controlled to print the printing times material into the unit to be printed. For example, suppose that there are 90 class A nozzles, 60 class B nozzles, 40 class C nozzles, and 10 class D nozzles; the 90A-type nozzles can be controlled, 12 ink drops are printed in each pixel pit, and the mixed target volume can be 48 picoliters. Because the A-type nozzle volume deviation value is optimal, the printed volume is closest to the target volume, and the uniformity of the thickness of the printed film is best.

In some embodiments, among the target volume class print nozzles, a print nozzle that can participate in printing is determined based on the stability class. Then dividing the printing times into at least one sub-times based on the sub-categories of the printing nozzles capable of participating in printing, wherein the sub-times correspond to the sub-categories; and controlling the printing nozzles corresponding to the sub-categories to print materials into the units to be printed based on the sub-times corresponding to the sub-categories. In some embodiments, it is determined that the printing nozzles that can participate in printing are printing nozzles other than the printing nozzles corresponding to the unstable subclasses, and the printing nozzles corresponding to the other subclasses are controlled to print the material into the unit to be printed. For example, when the preset number of times is 12, the number of times corresponding to the first stable subclass is 8, the number of times corresponding to the second stable subclass is 2, the number of times corresponding to the third stable subclass is 2, and the number of times corresponding to the unstable subclass is 0.

For example, when 12 drops of ink need to be printed in a pixel pit, the type a nozzles are preferably selected to participate in printing, for example, 6 drops or more are printed in each pixel pit by the type a nozzles, the remaining drops are printed by the type B nozzles and the type C nozzles, preferably, at least 1 drop is printed in each pixel pit by the type B nozzles, and at least 1 drop is printed in each pixel pit by the type C nozzles. Finally, the total drop number printed by each pixel pit is ensured to be 12 drops, and the total volume is ensured to be closest to 48 picoliters of the target volume. Therefore, the volume uniformity of ink in each pixel pit can be ensured; and a large number of nozzles on the ink-jet printing head can be ensured to participate in printing, so that the printing time is saved. Implementations that ensure that the total volume is closest to the target volume may include, but are not limited to: scheme one: and controlling the A type nozzle to print 6 drops, the B type nozzle to print 3 drops, and the C type nozzle to print 3 drops. Scheme II: and controlling the A type nozzle to print 7 drops, the B type nozzle to print 2 drops and the C type nozzle to print 3 drops. Scheme III: and controlling the A type nozzle to print 8 drops, the B type nozzle to print 2 drops, and the C type nozzle to print 2 drops. Scheme IV: and controlling the A type nozzle to print 9 drops, the B type nozzle to print 1 drop, and the C type nozzle to print 2 drops.

As can be seen from the above, in the present embodiment, by acquiring the volume data of each time the printing nozzle prints the material, classifying the printing nozzles based on the volume data, and then controlling the printing nozzles based on the classification of the printing nozzles, the thickness of the formed film layer can be made more uniform. Therefore, the film thickness uniformity that this scheme can let the printing is better to can display device's luminous effect is good, and stability is high.

In some embodiments, a film printing method may be further provided, and a specific flow of the film printing method may be as follows:

s1: the method comprises the steps of acquiring a category of printing nozzles of the printing device, wherein the category of the printing nozzles is used for representing the volume of the material and the stability of the volume when the printing nozzles print the material.

In some embodiments, the category of the print nozzles may be obtained from parameters of the printing device.

S2: the printing nozzles are controlled to print material on the substrate based on the type of the printing nozzles so as to form a film layer.

The specific embodiment of S2 may be described with reference to step 103, and will not be described herein.

In some embodiments, when the substrate has units to be printed, each unit to be printed needs to be printed multiple times, if the positions of the materials printed into the units to be printed are unevenly distributed, the materials are easy to flow poorly in the units to be printed, and the thickness of the film layer is uneven. In addition, because some materials are volatile in solvents, such as uneven placement of ink droplets ejected into the pixel wells, the time for the ink droplets to flow within the pixel wells increases, thereby increasing the risk of coffee ring generation. Therefore, the present embodiment provides a film printing method. As shown in fig. 2, a specific flow of a film printing method is as follows:

210. Partitioning units to be printed in a substrate to obtain a plurality of sub-areas of the units to be printed.

In some embodiments, the units to be printed in the substrate may be randomly partitioned, so as to obtain a plurality of sub-regions of the units to be printed.

In some embodiments, partitioning a unit to be printed in a substrate, obtaining a plurality of sub-areas of the unit to be printed may include, but is not limited to, the following steps:

1. and acquiring the size information of the unit to be printed in the substrate.

Wherein the size information includes an area to be printed of the unit to be printed.

In some embodiments, parameters of the substrate may be configured, and the area to be printed of the unit to be printed may be obtained from the parameters of the substrate.

In some embodiments, the alignment mark is included in the substrate, and the obtaining the size information of the unit to be printed in the substrate may include, but is not limited to, the following steps:

i. collecting an image of a target area, wherein the target area is an area within a preset range of a counterpoint mark, and comprises at least one unit to be printed; the value of the preset range can be set in a self-defined mode according to the actual application condition. In some embodiments, the printing device comprises an image acquisition device, such as a camera; an image of the target area is acquired using an image acquisition device. For example, if the substrate includes a plurality of pixel pits, and the pixel pit closest to the alignment mark is referred to as a substrate pixel pit, a camera may be used to collect the pixel pit of the substrate and the area outline within the preset range of the pixel pit, so as to obtain the image of the target area.

ii. The size information of the unit to be printed is identified based on the image of the target area.

In some embodiments, the printing apparatus includes an image processing apparatus, and the image processing apparatus may be used to identify a length and a width of a unit to be printed in the image of the target area, and obtain the area to be printed based on the length and the width. For example, after the image processing apparatus recognizes the length and width of the pixel pit, the area to be printed S1 of the pixel pit may be determined.

2. Partitioning the unit to be printed based on the size information to obtain a plurality of sub-areas of the unit to be printed.

In some embodiments, the unit to be printed may be equally divided into a plurality of sub-regions based on the area to be printed.

In some embodiments, partitioning the unit to be printed based on the size information, resulting in multiple sub-regions of the unit to be printed, may include, but is not limited to, the steps of:

i. and determining the printing area when the printing nozzle prints the material, wherein the printing area is the area formed in the printing unit when the printing nozzle prints the material into the unit to be printed. For example, the print area S2 where ink drops fall into the pixel pits may be collected. In some embodiments, the print area may be the area in which ink forms in the pixel pit when the nozzle prints ink into the pixel pit once.

ii. And partitioning the unit to be printed based on the area to be printed and the printing area to obtain a plurality of subareas of the unit to be printed.

In some embodiments, determining a quotient of the area to be printed and the print area; the unit to be printed is divided into a plurality of sub-areas according to the quotient. Wherein the number of subregions is an integer. For example, quotient N _max ＝S1/S2，N _max In decimal, the integer can be taken; in the case of ink-jet printing, the number of actual subareas may be equal to or less than the maximum number N of subareas _max . In some embodiments, the number of sub-regions may be preset to be between 6 and 20.

In some embodiments, the relative distance between the units to be printed may also be determined based on the image of the target area with the location of the alignment mark as the origin. In some embodiments, the image processing device is used to identify the relative distance between the units to be printed in the image of the target area, so as to obtain the distribution rule of the units to be printed. Determining the center point coordinates of the unit to be printed based on the size information and the relative distance; and determining the center point coordinates of the sub-areas based on the center point coordinates of the unit to be printed.

For example, the center point of the alignment mark is the origin (0, 0), the horizontal direction of the alignment mark is the x direction, and the vertical direction is the y direction. The image processing apparatus calculates a substrate pixel pit center point coordinate (X1, Y1) closest to the alignment mark, and a center coordinate (X11, Y11), (X12, Y12), …, (X14, Y14), (X15, Y15) of each of the sub-areas in which the pixel pit is divided into 15 sub-areas. And similarly, synchronously obtaining the center coordinates of each sub-region in all the pixel pits on the substrate according to the relative positions between the pixel pits of the substrate.

220. The printing nozzles of the printing device are controlled to print material into the sub-areas so as to form a film layer.

In some embodiments, when controlling the printing nozzles of the printing device to print material into the sub-area, the printing nozzles may be controlled to be aligned with the center point coordinates of the sub-area, printing material into the sub-area. Wherein the print nozzle may be any print nozzle on the printing device. For example, for an inkjet printing apparatus, a motor may be used to control the movement of an inkjet printhead on a rail, so that nozzles move to the central coordinate positions of the corresponding sub-areas, and the nozzles eject ink; the nozzle may be any nozzle on an inkjet printhead.

In some embodiments, a specific implementation of controlling the printing nozzles of the printing device to print material into the sub-areas so as to form a film layer may include, but is not limited to, the steps of:

1. the type of print nozzle may be determined; specific embodiments for determining the type of the printing nozzle may refer to step 120 and step 130, and will not be described herein.

2. Based on the type of print nozzles, the print nozzles are controlled to print material into the sub-area.

In some embodiments, controlling the printing nozzles to print material into the sub-area based on the categories of the printing nozzles may include, but is not limited to, the steps of:

i. Classifying the sub-regions to obtain region categories of the sub-regions; wherein the region category corresponds to a category of the printing nozzles. In some embodiments, the sub-regions may be classified according to actual application. For example, the type of the print nozzle is a stable type of the print nozzle, the region type of the sub-region corresponding to the first stable sub-category may be divided into a region a, the region type of the sub-region corresponding to the second stable sub-category may be divided into a region B, and the region type of the sub-region corresponding to the third stable sub-category may be divided into a region C.

For example, assuming that the pixel pit includes 15 sub-areas, in order to better distinguish the landing positions of ink droplets, the 15 sub-areas in the pixel pit may be marked with (1) No. area, (2) No. area, …, (14) No. area, and (15) No. area, respectively. In some embodiments, region a may correspond to regions (1) - (9), region B may correspond to regions (10) - (12), and region C may correspond to regions (13) - (15). It is also possible that the B region corresponds to the (1) - (3) region, the a region corresponds to the (4) - (12) region, the C region corresponds to the (13) - (15) region, and so on.

ii. The print nozzles corresponding to the control region categories print material into the sub-regions. In some embodiments, the volume type of the printing nozzle corresponding to the unit to be printed may be determined according to the target volume of the material required by the unit to be printed, and the printing nozzle corresponding to the volume type is controlled to print the material into the sub-area. For example, the printing nozzles corresponding to the first stable subclass may be controlled to print material to the A area, the printing nozzles corresponding to the second stable subclass may be controlled to print material to the B area, and the printing nozzles corresponding to the third stable subclass may be controlled to print material to the C area.

For example, assuming a target volume of 40 picoliters for a pixel well, a nozzle with a volume class of 4 picoliters for a volume average is selected, and the preset number of times is 10. Schemes for controlling the nozzles to print ink into the sub-regions may include, but are not limited to, the following:

scheme one: the A type nozzle can be controlled to print 7 drops, the B type nozzle can be controlled to print 2 drops, and the C type nozzle can be controlled to print 1 drop. Namely, the A-type nozzle arbitrarily selects 7 sub-areas in the areas (A areas) from (1) to (9), and each sub-area sprays 1 drop of ink; the type B nozzle can select 2 sub-areas in the (10) - (12) th area (B area) at will, and each sub-area sprays 1 drop of ink; the C-type nozzle may arbitrarily select 1 sub-area in the areas (C-areas) of (13) to (15), and each sub-area may eject 1 drop of ink.

Scheme II: the A type nozzle can be controlled to print 6 drops, the B type nozzle can be controlled to print 2 drops, and the C type nozzle can be controlled to print 2 drops. Namely, 6 points are arbitrarily selected in the area (A area) from the (4) to the (12) th, and 1 drop of ink is sprayed in each sub-area; the B-type nozzle can randomly select 2 points in the (1) to (3) th areas (B areas), and each sub-area sprays 1 drop of ink; the C-type nozzle was arbitrarily selected from 2 dots in the areas (C-area) of (13) to (15), and 1 drop of ink was ejected per sub-area.

Scheme III: the A type nozzle can be controlled to print 5 drops, the B type nozzle can be controlled to print 3 drops, and the C type nozzle can be controlled to print 2 drops. Namely, 5 points are arbitrarily selected in the area (A area) from the (7) to the (15) th, and 1 drop of ink is sprayed in each sub-area; the type B nozzle can eject 1 drop of ink in each of the areas (B areas) of (1) to (3); the C-type nozzle arbitrarily selects 2 points in the areas (C areas) from (4) to (6), and sprays 1 drop of ink in each sub-area.

Scheme IV: the A type nozzle can be controlled to print 5 drops, the B type nozzle can be controlled to print 3 drops, and the C type nozzle can be controlled to print 2 drops. Namely, the A-type nozzle sprays 5 drops of ink in 5 sub-areas arbitrarily selected from the areas (A areas) from the (7) to the (12); the B-type nozzle can arbitrarily select 3 sub-areas in the areas (B areas) from (1) to (6), and spray 3 drops of ink; the C-type nozzle ejects 2 drops of ink in 2 sub-areas arbitrarily selected from the areas (C areas) of (13) to (15).

It can be seen that in this embodiment, by partitioning the unit to be printed in the substrate to obtain a plurality of sub-regions, and then controlling the printing nozzles to align with the sub-regions for printing, the flowing time of the material in the unit to be printed can be reduced, the distribution of the material in the unit to be printed can be more uniform, the generation of the coffee ring effect can be avoided, and the thickness of the film layer can be effectively ensured to be more uniform. Therefore, the stability of the device can be improved by the scheme.

The film printing scheme provided by the invention can be applied to various equipment scenes consisting of film layers. For example, take an OLED or QLED film printing scenario, which includes an inkjet printing device and a computer controlling the inkjet printing device; it should be noted that, in the present embodiment, only a computer is used as an example, and in practical application, the inkjet printing apparatus may be controlled by other electronic apparatuses. Wherein the printing device is an inkjet printing device, as shown in fig. 3a, the inkjet printing device comprises an inkjet printhead 10, nozzles 20, a motor 30 and a guide rail 40, the motor 30 being capable of controlling the inkjet printhead 10 to move on the guide rail 40. The inkjet printing apparatus also includes an image acquisition apparatus 50 and an image processing apparatus 60. Also included in the scene is a volumetric measurement device 70. In this scenario, the substrate is a display device substrate, and the unit to be printed is a pixel pit corresponding to a sub-pixel. The film printing method will be described in further detail below.

As shown in fig. 3b, a specific flow of a film printing method is as follows:

310. the computer obtains at least one sample volume corresponding to each nozzle of the ink-jet printer, wherein the sample volume is the total volume of ink printed by the nozzle for a preset number of times.

For example, assuming that the preset number is 100, the inkjet printhead has 200 nozzles, and the Nozzle numbers are nozle 1, nozle 2, nozle 3, …, nozle 198, nozle 199, and nozle 200 in this order. Taking a Nozzle with the number of Nozle 1 to spray 100 times of materials, and collecting and measuring the total volume V1 of the Nozzle with the number of Nozle 1 to spray 100 times of materials by adopting a volume measuring device, wherein the V1 is the sample volume of the Nozzle with the number of Nozle 1. Likewise, sample volumes of other nozzles may be obtained.

320. The computer determines the volume average value corresponding to the nozzle based on the sample volume and the preset times; based on the volume average and the sample volume, a corresponding standard deviation of the volume of the nozzle is determined.

For example, the Nozzle number Nozle 1 corresponds to a volume average μ1 of V1/n. Similarly, volume averages μ2, μ3, …, μ198, μ199, and μ200 for 200 nozzles can be obtained, respectively. The actual volume value of each printing ink of the nozzle can be recorded, and the volume standard deviation sigma is calculated based on the volume average value mu and the preset times n. Similarly, the standard deviations of volumes corresponding to 200 nozzles are σ1, σ2, σ3, σ4, …, σ198, σ199, and σ200, respectively, can be obtained.

330. The computer carries out coarse classification on the nozzles based on the volume average value to obtain the volume types of the nozzles; and on the basis of the volume standard deviation, the nozzles corresponding to the volume categories are finely classified, and the stable categories of the nozzles are obtained.

For example, assuming that the volume average values of the nozzles 1 to nozzles 20 are 4 picoliters, the nozzles 1 to nozzles 20 are classified into the same type a, and the volume types of the nozzles 1 to nozzles 20 can be recorded as a. Similarly, other nozzle volume categories may be obtained.

200 nozzles may be classified according to the sizes of the volume standard deviations σ1, σ2, σ3, σ4, …, σ198, σ199, and σ200, the stability class of the nozzles having the volume standard deviation between 0 and 2% may be determined as class a, the stability class of the nozzles having the volume standard deviation between 2% and 4% may be determined as class B, the stability class of the nozzles having the volume standard deviation between 4% and 6% may be determined as class C, and the stability class of the nozzles exceeding 6% may be determined as class D; thus, 200 nozzles of an inkjet printhead can be classified into 4 categories, A/B/C/D.

340. The computer determines the target volume of ink required by the pixel pits in the substrate; determining the number of printing times corresponding to the pixel pits based on the target volume and the volume type of the nozzle; based on the number of prints and the stability class, nozzles involved in printing are determined.

For example, the target volume of ink required for a pixel pit in a substrate is determined to be 40 picoliters, and a volume class includes a nozzle corresponding to a volume average value of 4 picoliters and a nozzle corresponding to a volume average value of 6 picoliters; the corresponding nozzle with a volume average of 4 picoliters may be selected and the average number of prints per pixel pit calculated to be 10 times, i.e. 10 times.

Among the corresponding nozzles of 4 picoliters, the type A nozzle is preferably selected to participate in printing, for example, more than 6 drops are printed by the type A nozzle in each pixel pit, the number of the left drops is participated in printing by the type B nozzle and the type C nozzle, preferably, at least 1 drop is printed by the type B nozzle in each pixel pit, and at least 1 drop is printed by the type C nozzle in each pixel pit.

350. The computer obtains the area to be printed of the pixel pits in the substrate; and determining the printing area corresponding to the nozzle, wherein the printing area is the area formed by the ink in the pixel pit when the nozzle prints the ink into the pixel pit.

As shown in fig. 3c, the substrate 54 includes a substrate pixel pit 55 and an alignment mark 56. Collecting the pixel pit 55 of the substrate closest to the alignment mark 56 and the regional outline within the preset range of the pixel pit by adopting a camera; after the length and width of the pixel pit are recognized by the image processing apparatus, the area to be printed S1 of the pixel pit can be determined. The print area S2 where ink drops into the pixel pits can be collected.

360. The computer partitions the pixel pits based on the area to be printed and the printing area to obtain a plurality of sub-areas of the pixel pits.

At the time of inkjet printing, the maximum area number is quotient nmax=s1/S2; the actual number of zones may be less than the maximum number Nmax of zones, and the number of zones may be between 6 and 20. The pixel pit is divided into a number of sub-areas. For example. As shown in fig. 3d, a single pixel pit is divided into 15 sub-areas. In order to better distinguish the drop positions of the ink drops, the 15 sub-areas in the pixel pit may be marked respectively, and the (1) number area, the (2) number area, the … (14) number area and the (15) number area may be marked respectively.

Assume that the center point of the alignment mark is the origin (0, 0), the horizontal direction of the alignment mark is the x direction, and the vertical direction is the y direction. The image processing apparatus calculates a substrate pixel pit center point coordinate (X1, Y1) closest to the alignment mark, and a center coordinate (X11, Y11), (X12, Y12), …, (X14, Y14), (X15, Y15) of each of the sub-areas in which the pixel pit is divided into 15 sub-areas. And similarly, synchronously obtaining the center coordinates of each sub-region in all the pixel pits on the substrate according to the relative positions between the pixel pits of the substrate.

370. Classifying the subareas by the computer to obtain the area category of the subareas, wherein the area category corresponds to the stability category of the nozzle; the nozzles corresponding to the control region categories print ink into the sub-regions to form a film layer.

The guide rail may be controlled to move the inkjet printhead to align the nozzles with the center point coordinates of the sub-regions and print ink into the sub-regions. For example, assuming that the target volume of the pixel pit is 40 picoliters, a nozzle having a volume class of 4 picoliters in volume average is selected, and the preset number of times is 10. Schemes for controlling the nozzles to print ink into the sub-regions may include, but are not limited to, the following:

scheme one: as shown in fig. 3e, the type a nozzles may correspond to the (1) - (9) number regions, the type B nozzles correspond to the (10) - (12) number regions, and the type C nozzles correspond to the (13) - (15) number regions. Therefore, the type a nozzles can be controlled to print 7 drops, the type B nozzles to print 2 drops, and the type C nozzles to print 1 drop. Namely, the A-type nozzle randomly selects 7 sub-areas in the (1) to (9) th areas, and each sub-area sprays 1 drop of ink; the B-type nozzle can select 2 sub-areas in the (10) - (12) th area at will, and each sub-area sprays 1 drop of ink; the C-type nozzle may arbitrarily select 1 sub-area among the areas (13) to (15), and each sub-area ejects 1 drop of ink.

Scheme II: as shown in fig. 3f, the type B nozzles may correspond to the (1) - (3) number regions, the type a nozzles may correspond to the (4) - (12) number regions, and the type C nozzles may correspond to the (13) - (15) number regions. The A type nozzle can be controlled to print 6 drops, the B type nozzle can be controlled to print 2 drops, and the C type nozzle can be controlled to print 2 drops. Namely, 6 points are arbitrarily selected in the areas (4) to (12) of the A-type nozzle, and each sub-area sprays 1 drop of ink; the B-type nozzle can select 2 points in the (1) to (3) th areas at will, and each sub-area sprays 1 drop of ink; the C-type nozzle is used for arbitrarily selecting 2 points in the (13) - (15) th area, and 1 drop of ink is sprayed in each sub-area.

Scheme III: as shown in fig. 3g, the type B nozzles may correspond to the (1) - (3) number regions, the type C nozzles may correspond to the (4) - (6) number regions, the type a nozzles may correspond to the (7) - (15) number regions, and so on. The A type nozzle can be controlled to print 5 drops, the B type nozzle can be controlled to print 3 drops, and the C type nozzle can be controlled to print 2 drops. Namely, 5 points of the A-type nozzle are arbitrarily selected in the (7) to (15) th areas, and each sub-area sprays 1 drop of ink; the type B nozzle can eject 1 drop of ink in each of the areas (1) to (3); the C-type nozzle is used for arbitrarily selecting 2 points in the (4) - (6) th area, and 1 drop of ink is sprayed in each sub-area.

Scheme IV: as shown in fig. 3h, the type B nozzles may correspond to the (1) to (6) regions, the type a nozzles may correspond to the (7) to (12) regions, and the type C nozzles may correspond to the (13) to (15) regions. The A type nozzle can be controlled to print 5 drops, the B type nozzle can be controlled to print 3 drops, and the C type nozzle can be controlled to print 2 drops. Namely, the A-type nozzle sprays 5 drops of ink in 5 sub-areas selected from the (7) to (12) th areas; the B-type nozzle can jet 3 drops of ink in 3 sub-areas selected from the areas (1) - (6); the C-type nozzle ejects 2 drops of ink from 2 sub-areas arbitrarily selected from the areas (13) to (15).

Further, for the present embodiment, the lighting effect of the printed device was also demonstrated, and as shown in fig. 3i, it can be seen that the device did not appear a phenomenon in which color unevenness caused various marks (Mura unevenness phenomenon). In other non-improved schemes, as shown in fig. 3j, color non-uniformity often occurs after the printed device is lit.

As can be seen from the above, in this embodiment, the total volume of ink printed by the nozzle for a preset number of times is obtained and analyzed to obtain the volume data of ink when the nozzle prints each time, and the nozzles are classified based on the volume data to obtain the nozzle types. Then the pixel pits in the substrate are partitioned through the size information of the pixel pits to obtain a plurality of sub-areas, and the nozzles are controlled to be aligned to the sub-areas based on the types of the nozzles for printing, so that the flowing time of the ink in the pixel pits can be reduced, the distribution of the ink in the pixel pits is more uniform, the generation of a coffee ring effect can be avoided, and meanwhile, the thickness of the film layer is effectively ensured to be more uniform. Therefore, the stability of the device can be improved by the scheme.

In order to better implement the above method, the present invention also provides a film printing device, for example, in this embodiment, the film printing device is specifically integrated in an electronic device, and the method of the present invention will be described in detail.

For example, as shown in fig. 4, the film printing apparatus may include a volume acquisition unit 401, a classification unit 402, and a category control unit 403, as follows:

volume acquisition unit 401

A volume acquisition unit 401 for acquiring volume data when printing a material by a printing nozzle of the printing apparatus.

(two) Classification Unit 402

The classifying unit 402 is configured to classify the printing nozzles based on the volume data when the printing nozzles print the material, and obtain the types of the printing nozzles.

(III) category control unit 403

A category control unit 403 for controlling the printing nozzles to print material on the substrate based on the categories of the printing nozzles so as to form a film layer.

The substrate includes at least one unit to be printed, and the category control unit 403 is specifically configured to:

determining a target volume of material required by a unit to be printed;

In some embodiments, the categories of printing nozzles include a volume category and a stability category, and the category control unit 403 is specifically configured to:

In some embodiments, the stability category comprises at least one subcategory, the category control unit 403 being specifically configured to:

In some embodiments, the volume acquisition unit 401 is specifically configured to:

In some embodiments, the film printing device is further configured to:

In some embodiments, the categories of printing nozzles include a volume category and a stability category, the volume data includes a volume standard deviation and a volume average, and the classification unit 402 is specifically configured to:

In some embodiments, the stability categories include a first stability subclass, a second stability subclass, a third stability subclass, and an instability subclass, and the classification unit 402 is specifically configured to:

As shown in fig. 4, the film printing apparatus may further include a partitioning unit 404 and a region control unit 405, as follows:

(IV) partition unit 404

A partitioning unit 404, configured to partition a unit to be printed in the substrate, so as to obtain a plurality of sub-areas of the unit to be printed;

(fifth) region control unit 405

And a region control unit 405 for controlling printing nozzles of the printing apparatus to print material into the sub-regions so as to form a film layer.

In some embodiments, partition unit 404 is specifically configured to:

acquiring size information of a unit to be printed in a substrate;

partitioning the unit to be printed in the substrate based on the size information to obtain a plurality of sub-areas of the unit to be printed.

In some embodiments, the size information includes an area to be printed of the unit to be printed, and the partition unit 404 is specifically configured to:

determining a printing area when the printing nozzle prints the material, wherein the printing area is the area formed in the unit to be printed by the material when the printing nozzle prints the material into the unit to be printed;

and partitioning the unit to be printed based on the area to be printed and the printing area to obtain a plurality of subareas of the unit to be printed.

In some embodiments, partition unit 404 is specifically used to

Determining the quotient of the area to be printed and the printing area;

the unit to be printed is divided into a plurality of sub-areas according to the quotient.

In some embodiments, the area control unit 405 is specifically configured to:

determining a category of printing nozzles;

based on the type of print nozzles, the print nozzles are controlled to print material into the sub-area.

In some embodiments, partition unit 404 is specifically configured to:

classifying the sub-areas to obtain area categories of the sub-areas, wherein the area categories correspond to the categories of the printing nozzles;

controlling the printing nozzles to print material into the sub-area based on the categories of the printing nozzles, comprising:

the print nozzles corresponding to the control region categories print material into the sub-regions.

In some embodiments, the substrate includes a registration mark, and the partition unit 404 is specifically configured to:

collecting an image of a target area, wherein the target area is an area within a preset range of a counterpoint mark, and comprises at least one unit to be printed;

the size information of the unit to be printed is identified based on the image of the target area.

In some embodiments, the position of the alignment mark is an origin, and the film printing device is further configured to:

determining a relative distance between units to be printed based on the image of the target area;

determining the center point coordinates of the unit to be printed based on the size information and the relative distance;

and determining the center point coordinates of the sub-areas based on the center point coordinates of the unit to be printed.

Controlling printing nozzles of a printing device to print material into a sub-area, comprising:

the printing nozzles are controlled to be aligned with the center point coordinates of the sub-areas, and the material is printed into the sub-areas.

In the implementation, each unit may be implemented as an independent entity, or may be implemented as the same entity or several entities in any combination, and the implementation of each unit may be referred to the foregoing method embodiment, which is not described herein again.

As can be seen from the above, the film printing device of the present embodiment can make the thickness of the formed film more uniform by acquiring the volume data when the printing nozzles print the material, classifying the printing nozzles based on the volume data, and controlling the printing nozzles based on the classification of the printing nozzles. Therefore, the stability of the device can be improved by the scheme.

Accordingly, an electronic device is further provided in an embodiment of the present application, as shown in fig. 5, fig. 5 is a schematic structural diagram of the electronic device provided in the embodiment of the present application, where the electronic device 500 includes a processor 501 with one or more processing cores, a memory 502 with one or more computer readable storage media, and a computer program stored in the memory 502 and capable of running on the processor. The processor 501 is electrically connected to the memory 502. It will be appreciated by those skilled in the art that the electronic device structure shown in the figures is not limiting of the electronic device and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

The processor 501 is a control center of the electronic device 500, connects various portions of the entire electronic device 500 using various interfaces and lines, and performs various functions of the electronic device 500 and processes data by running or loading software programs and/or modules stored in the memory 502, and invoking data stored in the memory 502, thereby performing overall monitoring of the electronic device 500.

In the embodiment of the present application, the processor 501 in the electronic device 500 loads the instructions corresponding to the processes of one or more application programs into the memory 502 according to the following steps, and the processor 501 executes the application programs stored in the memory 502, so as to implement various functions:

In some embodiments, processor 501 runs an application program stored in memory 502 and also implements the following functions:

partitioning a unit to be printed in a substrate to obtain a plurality of sub-areas of the unit to be printed;

the printing nozzles of the printing device are controlled to print material into the sub-areas so as to form a film layer.

The specific implementation of each operation above may be referred to the previous embodiments, and will not be described herein.

Optionally, as shown in fig. 5, the electronic device 500 further includes: a touch display screen 503, a radio frequency circuit 504, an audio circuit 505, an input unit 506, and a power supply 507. The processor 501 is electrically connected to the touch display 503, the radio frequency circuit 504, the audio circuit 505, the input unit 506, and the power supply 507, respectively. It will be appreciated by those skilled in the art that the electronic device structure shown in fig. 5 is not limiting of the electronic device and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

The touch display screen 503 may be used to display a graphical user interface and receive operation instructions generated by a user acting on the graphical user interface. The touch display screen 503 may include a display panel and a touch panel. Wherein the display panel may be used to display information entered by a user or provided to a user as well as various graphical user interfaces of the electronic device, which may be composed of graphics, text, icons, video, and any combination thereof. Alternatively, the display panel may be configured in the form of a liquid crystal display (LCD, liquid Crystal Display), an Organic Light-Emitting Diode (OLED), or the like. The touch panel may be used to collect touch operations on or near the user (such as operations on or near the touch panel by the user using any suitable object or accessory such as a finger, stylus, etc.), and generate corresponding operation instructions, and the operation instructions execute corresponding programs. Alternatively, the touch panel may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 501, and can receive commands from the processor 501 and execute them. The touch panel may overlay the display panel, and upon detection of a touch operation thereon or thereabout, the touch panel is passed to the processor 501 to determine the type of touch event, and the processor 501 then provides a corresponding visual output on the display panel based on the type of touch event. In the embodiment of the present application, the touch panel and the display panel may be integrated into the touch display screen 503 to realize the input and output functions. In some embodiments, however, the touch panel and the touch panel may be implemented as two separate components to perform the input and output functions. I.e. the touch sensitive display 503 may also implement an input function as part of the input unit 506.

In an embodiment of the present application, a graphical user interface is generated on the touch display screen 503 by the processor 501 executing an application program corresponding to the printing apparatus. The touch display screen 503 is used for presenting a graphical user interface and receiving operation instructions generated by a user acting on the graphical user interface.

The radio frequency circuitry 504 may be used to transceive radio frequency signals to establish wireless communication with a network device or other electronic device via wireless communication.

The audio circuitry 505 may be used to provide an audio interface between a user and the electronic device through a speaker, microphone. The audio circuit 505 may transmit the received electrical signal after audio data conversion to a speaker, and convert the electrical signal into a sound signal for output by the speaker; on the other hand, the microphone converts the collected sound signals into electrical signals, which are received by the audio circuit 505 and converted into audio data, which are processed by the audio data output processor 501 for transmission to, for example, another electronic device via the radio frequency circuit 504, or which are output to the memory 502 for further processing. The audio circuit 505 may also include an ear bud jack to provide communication of the peripheral ear bud with the electronic device.

The input unit 506 may be used to receive input numbers, character information, or user characteristic information (e.g., fingerprint, iris, facial information, etc.), and to generate keyboard, mouse, joystick, optical, or trackball signal inputs related to user settings and function control.

The power supply 507 is used to power the various components of the electronic device 500. Alternatively, the power supply 507 may be logically connected to the processor 501 through a power management system, so as to implement functions of managing charging, discharging, and power consumption management through the power management system. The power supply 507 may also include one or more of any components, such as a direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.

Although not shown in fig. 5, the electronic device 500 may further include a camera, a sensor, a wireless fidelity module, a bluetooth module, etc., which are not described herein.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

As can be seen from the above, the electronic device provided in this embodiment may make the thickness of the formed film more uniform by acquiring the volume data of the printing nozzles when printing the material, classifying the printing nozzles based on the volume data, and controlling the printing nozzles based on the classification of the printing nozzles. Therefore, the stability of the device can be improved by the scheme.

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the various methods of the above embodiments may be performed by instructions, or by instructions controlling associated hardware, which may be stored in a computer-readable storage medium and loaded and executed by a processor.

To this end, an embodiment of the present application provides a computer readable storage medium in which a plurality of computer programs are stored, the computer programs being capable of being loaded by a processor to perform steps in any one of the film printing methods provided by the embodiment of the present application. For example, the computer program may perform the steps of:

In some embodiments, the computer program may further perform the steps of:

Wherein the storage medium may include: read Only Memory (ROM), random access Memory (RAM, random Access Memory), magnetic or optical disk, and the like.

The steps in any film printing method provided by the embodiment of the present application can be executed by the computer program stored in the storage medium, so that the beneficial effects that can be achieved by any film printing method provided by the embodiment of the present application can be achieved, and detailed descriptions of the foregoing embodiments are omitted.

The film printing method, the device, the storage medium and the electronic equipment provided by the embodiment of the application are described in detail, and specific examples are applied to illustrate the principle and the implementation of the application, and the description of the above embodiments is only used for helping to understand the method and the core idea of the application; 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 application, the present description should not be construed as limiting the present application.

Claims

1. A film printing method, comprising:

acquiring volume data of the printing equipment when the printing nozzle prints the material;

the printing nozzles are controlled to print the material on the substrate based on the type of the printing nozzles so as to form a film layer.

2. The film printing method of claim 1 wherein the substrate includes at least one unit to be printed, the controlling the printing nozzles to print the material on the substrate based on the type of the printing nozzles comprising:

determining a target volume of material required by the unit to be printed;

and controlling the printing nozzle to print the material into the unit to be printed based on the target volume and the category of the printing nozzle.

3. The film printing method of claim 2, wherein the categories of printing nozzles include a volume category and a stability category, the controlling the printing nozzles to print the material into the unit to be printed based on the target volume and the categories of printing nozzles comprising:

Determining the printing times corresponding to the unit to be printed based on the target volume and the volume class;

and controlling the printing nozzle to print the material into the unit to be printed based on the printing times and the stability category so as to form a film layer.

4. A film printing method as recited in claim 3, wherein the stability category includes at least one subcategory, the controlling the printing nozzle to print the material into the unit to be printed based on the number of prints and the stability category comprising:

dividing the printing times into at least one sub-time based on the sub-category, wherein the sub-time corresponds to the sub-category;

and controlling the printing nozzles corresponding to the sub-categories to print the materials into the units to be printed based on the sub-times corresponding to the sub-categories.

5. The film printing method according to any one of claims 2 to 4, wherein when the substrate is a display device substrate, the unit to be printed is a pixel pit corresponding to a sub-pixel on the display device substrate.

6. The film printing method as recited in claim 1, wherein the acquiring volume data of the printing device when printing material by printing nozzles comprises:

Obtaining at least one sample volume corresponding to each printing nozzle of the printing equipment, wherein the sample volume is the total volume of materials printed by the printing nozzles for a preset number of times, and the preset number of times is at least more than or equal to 2;

and carrying out statistical analysis on the sample volume to obtain volume data of the printing nozzle when the printing material is printed.

7. The film printing method of claim 6 wherein prior to obtaining the at least one sample volume for each print nozzle of the printing device, further comprising:

determining an actual volume value of the material printed by the printing nozzle each time;

the volume data comprises a volume standard deviation and a volume average value, the statistical analysis is performed on the sample volume to obtain the volume data of the material printed by the printing nozzle each time, and the method comprises the following steps:

determining the volume average value corresponding to the printing nozzle based on the sample volume and the preset times;

8. The film printing method of claim 1, wherein the categories of the printing nozzles include a volume category and a stability category, the volume data includes a volume standard deviation and a volume average value, and the classifying the printing nozzles based on the volume data of the printing nozzles when printing the material to obtain the categories of the printing nozzles includes:

Coarse classification is carried out on the printing nozzles based on the volume average value, so that the volume categories of the printing nozzles are obtained;

and on the basis of the volume standard deviation, finely classifying the printing nozzles corresponding to the volume categories to obtain the stable categories of the printing nozzles.

9. The film printing method according to claim 8, wherein the stability categories include a first stability subclass, a second stability subclass, a third stability subclass, and an instability subclass, and the classifying the printing nozzles corresponding to the volume categories based on the volume standard deviation to obtain the stability categories of the printing nozzles includes:

determining a stability class of the print nozzles as the first stability subclass when the volumetric standard deviation is not greater than a first standard deviation threshold;

determining a stability class of the print nozzles as the second stability subclass when the volumetric standard deviation is greater than a first standard deviation threshold and not greater than a second standard deviation threshold;

determining a stability class of the print nozzles as the third stability subclass when the volumetric standard deviation is greater than a second standard deviation threshold and not greater than a third standard deviation threshold;

and determining a stability class of the printing nozzle as the instability subclass when the volume standard deviation is greater than a third standard deviation threshold.

10. A film printing method, comprising:

acquiring the type of a printing nozzle of a printing device, wherein the type of the printing nozzle is used for representing the volume of a material and the stability of the volume when the printing nozzle prints the material;

11. The film printing method of claim 10 wherein the substrate includes at least one unit to be printed, the controlling the printing nozzles to print the material on the substrate based on the type of the printing nozzles comprising:

determining a target volume of material required by the unit to be printed;

12. The film printing method of claim 11 wherein the categories of print nozzles include a volume category and a stability category, the controlling the print nozzles to print the material into the unit to be printed based on the target volume and the categories of print nozzles comprising:

13. The film printing method of claim 12 wherein said stability category includes at least one subcategory, said controlling said printing nozzles to print said material into said unit to be printed based on said number of prints and said stability category comprising:

14. The film printing method according to any one of claims 10 to 13, wherein when the substrate is a display device substrate, the unit to be printed is a pixel pit corresponding to a sub-pixel on the display device substrate.

15. A film printing apparatus, comprising:

a volume acquisition unit that acquires volume data of the printing apparatus when printing a material by a printing nozzle;

The classification unit is used for classifying the printing nozzles based on the volume data of the printing nozzles when the printing nozzles print materials, so as to obtain the categories of the printing nozzles;

and the type control unit is used for controlling the printing nozzles to print the material on the substrate based on the types of the printing nozzles so as to form a film layer.

16. An electronic device comprising a processor and a memory, the memory storing a plurality of instructions; the processor loads instructions from the memory to perform the steps in the film printing method according to any one of claims 1 to 9.

17. A computer readable storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps in the film printing method of any one of claims 1 to 9.