Inkjet printing control method, device, equipment and computer medium of display panel

Abstract

The application discloses an inkjet printing control method, device and equipment of a display panel and a computer medium, relates to the field of inkjet printing technology, and is applied to an inkjet printing control device of a display panel. The inkjet printing control device of the display panel is used to acquire the nozzle spacing and inkjet printing parameters of the inkjet printing control device, determine the pixel groove center distance of the display panel according to the nozzle spacing, determine the inkjet printing instruction according to the pixel groove center distance and the inkjet printing parameters, and perform inkjet printing on the display panel according to the inkjet printing instruction, thereby improving the inkjet printing effect of the display panel.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of inkjet printing technology, in particular to a display panel inkjet printing control method and device, equipment and computer medium. BACKGROUND

[0002] With the continuous development of inkjet printing technology, inkjet printing is also more and more used in the design of display panels, so users have higher requirements for the inkjet printing control method of display panels.

[0003] The traditional inkjet printing control method of display panels is to set a specific driving signal for the inkjet nozzle that needs to be inkjetted by combining positioning, that is, to determine which nozzle is at the positioning point that needs to be inkjetted, and then control the nozzle to inkjet, that is, each nozzle needs to be frequently started and stopped and positioned and fine-tuned to realize accurate alignment of each pixel slot in the entire printing process. This inkjet printing control method of display panels has great defects, and there will be a phenomenon that the entire printing process needs to be frequently started and stopped to ensure the accuracy of positioning, that is, this inkjet printing control method of display panels will cause the efficiency of inkjet printing control of display panels to be low due to the need to frequently start and stop the entire printing process to ensure the accuracy of positioning.

[0004] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0005] The main purpose of the present application is to provide a display panel inkjet printing control method, device, equipment and computer medium, which aims to solve the technical problem of low efficiency of display panel inkjet printing control.

[0006] To achieve the above purpose, the present application provides a display panel inkjet printing control method, which is applied to a display panel inkjet printing control device, and comprises the following steps:

[0007] Obtain the nozzle spacing and inkjet printing parameters of the display panel inkjet printing control device, and determine the pixel slot center distance of the display panel according to the nozzle spacing;

[0008] Determine the inkjet printing instruction according to the pixel slot center distance and the inkjet printing parameter, and perform inkjet printing on the display panel according to the inkjet printing instruction.

[0009] In an embodiment, the pixel slot center distance comprises a first pixel slot center distance between same sub-pixel center points in a horizontal direction of the display panel and a second pixel slot center distance between same sub-pixel center points in a vertical direction of the display panel, and the step of determining the pixel slot center distance of the display panel according to the nozzle pitch comprises:

[0010] determining a first product between the nozzle pitch and a first preset threshold, and taking the first product as the first pixel slot center distance;

[0011] determining a second product between the nozzle pitch and a second preset threshold, and taking the second product as the second pixel slot center distance, wherein the first preset threshold and the second preset threshold are positive integers.

[0012] In an embodiment, the inkjet printing parameters comprise a spreading area of each pixel slot on the display panel and ink property parameters, and the step of determining the inkjet printing instruction according to the pixel slot center distance and the inkjet printing parameters comprises:

[0013] sequentially determining a target ink property parameter of the pixel slot based on the pixel slot center distance, wherein the target ink property parameter comprises an ink property required by the pixel slot for inkjet printing;

[0014] determining a nozzle control instruction in preset inkjet printing parameters based on the target ink property parameter and the spreading area, and taking the nozzle control instruction as the inkjet printing instruction of the pixel slot.

[0015] In an embodiment, after the step of determining the inkjet printing instruction according to the pixel slot center distance and the inkjet printing parameters, the method further comprises:

[0016] in a case where the pixel slot is an equal-length pixel slot, determining a first target nozzle corresponding to the equal-length pixel slot, and writing the first target nozzle bound to the equal-length pixel slot into the inkjet printing instruction, wherein the first target nozzle is used to execute the inkjet printing instruction to realize inkjet printing for the equal-length pixel slot;

[0017] in a case where the pixel slot is an unequal-length pixel slot, sequentially determining a second target nozzle corresponding to each of the unequal-length pixel slots, and writing the second target nozzle bound to the unequal-length pixel slot into the inkjet printing instruction, wherein the second target nozzle is used to execute the inkjet printing instruction to realize inkjet printing for each of the unequal-length pixel slots.

[0018] In an embodiment, the step of inkjet printing the display panel according to the inkjet printing instruction comprises:

[0019] For each pixel slot on the display panel, determine a target nozzle in the inkjet printing instruction and an inkjet parameter of the target nozzle, and a motion path of the target nozzle;

[0020] Control the target nozzle to perform inkjet printing on the pixel slot based on the motion path and the inkjet parameter.

[0021] In an embodiment, the step of performing inkjet printing on the display panel according to the inkjet printing instruction further comprises:

[0022] Determine a point nozzle in the inkjet printing instruction and a point printing parameter of the point nozzle;

[0023] In a case where the positioning of the point nozzle meets a preset positioning point, control the point nozzle to perform inkjet printing based on the point printing parameter.

[0024] In an embodiment, the step of performing inkjet printing on the display panel according to the inkjet printing instruction is followed by:

[0025] After the current inkjet printing is completed, perform the step of performing inkjet printing on the display panel according to the inkjet printing instruction in response to a movement instruction, wherein the movement instruction comprises controlling the nozzles in the inkjet printing control device of the display panel to move horizontally by a distance of the center distance of the pixel slot.

[0026] In addition, to achieve the above object, the present application also proposes a display panel inkjet printing control device, which comprises:

[0027] A parameter acquisition module is configured to acquire the nozzle spacing and inkjet printing parameters of the inkjet printing control device of the display panel, and determine the center distance of the pixel slot of the display panel according to the nozzle spacing;

[0028] An inkjet printing module is configured to determine an inkjet printing instruction according to the center distance of the pixel slot and the inkjet printing parameters, and perform inkjet printing on the display panel according to the inkjet printing instruction.

[0029] In addition, to achieve the above object, the present application also proposes a display panel inkjet printing control device, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the display panel inkjet printing control method as described above.

[0030] In addition, to achieve the above object, the application further provides a computer medium, which is a computer readable storage computer medium, and a computer program is stored on the computer readable storage computer medium, and the computer program is executed by a processor to implement the steps of the inkjet printing control method of the display panel.

[0031] The display panel inkjet printing control method provided by the embodiment of the application is applied to a display panel inkjet printing control device, the nozzle spacing of the display panel inkjet printing control device and inkjet printing parameters are obtained, the pixel groove center distance of the display panel is determined according to the nozzle spacing, the inkjet printing instruction is determined according to the pixel groove center distance and the inkjet printing parameters, and the display panel is inkjet printed according to the inkjet printing instruction. The display panel inkjet printing control method determines the pixel groove center distance of the display panel through the nozzle spacing of the display panel inkjet printing control device, and then determines the inkjet printing instruction by using the pixel groove center distance and the inkjet printing parameters based on the display panel after the pixel groove center distance is determined. Finally, the display panel can be inkjet printed based on the inkjet printing instruction, that is, the design of the display panel (that is, the pixel groove center distance) and the physical characteristics of the display panel inkjet printing control device (that is, the nozzle spacing) are combined to control the inkjet printing of the display panel. The problem of frequent start and stop of the entire printing process due to the need to ensure the accuracy of positioning can be avoided. The display panel inkjet printing control method combines the design of the display panel and the physical characteristics of the display panel inkjet printing control device to realize the inkjet printing of the display panel, and then the display panel can be inkjet printed in a targeted manner to overcome the defect of frequent start and stop of the printing process, thereby improving the effect of the inkjet printing control of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 The flowchart of the first embodiment of the display panel inkjet printing control method of the application is shown in the figure;

[0033] Figure 2 The center distance diagram of the display panel inkjet printing control method of the application is shown in the figure;

[0034] Figure 3 The scene diagram of the display panel inkjet printing control method of the application is shown in the figure;

[0035] Figure 4 The scene diagram of the display panel inkjet printing control method of the application is shown in the figure;

[0036] Figure 5 The module diagram of the display panel inkjet printing control device of the application is shown in the figure;

[0037] Figure 6The device structure schematic diagram of the hardware running environment of the device involved in the present application.

[0038] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings.

[0039] Explanation of reference numerals:

[0040] D1, first pixel slot center distance; D2, second pixel slot center distance; DZ, nozzle spacing. DETAILED DESCRIPTION

[0041] It should be understood that the specific embodiments described herein are merely intended to explain the present application and are not intended to limit the present application.

[0042] In order to better understand the technical solutions of the present application, the following will be described in detail in combination with the accompanying drawings and specific embodiments.

[0043] The current inkjet printing control of the display panel is to first determine which nozzles are on the positioning point that needs to be inked, and then control the nozzles to ink, that is, at this time, the design of the pixel slot and the physical characteristics (such as nozzle spacing) of the inkjet printing head are often independent of each other, lacking systematic matching. Therefore, this control method is prone to cause positioning deviation, uneven ink drop volume, color mixing or uneven film thickness after drying during printing, which seriously affects the display uniformity and yield of the panel. In view of the above problems of poor inkjet printing effect, some improvement schemes are proposed, such as adjusting the driving waveform to compensate for the differences of individual nozzles, or setting an ink storage groove structure, but at this time the nozzles still need to be frequently started and stopped and positioned for fine adjustment to achieve accurate alignment of each pixel slot, which seriously restricts the production rhythm, and on the other hand, the slight instability of the nozzle movement trajectory and the ink drop ejection parameter will be amplified on a huge printing area, resulting in uneven film thickness and causing display unevenness. On the other hand, alignment deviation or inaccurate ink drop positioning can easily cause color mixing, pixel missing and other defects.

[0044] Therefore, based on the above-mentioned shortcomings of the inkjet printing control scheme of the display panel, it can be found that the prior art mainly focuses on improving the inkjet head itself or the printing path algorithm, but fails to systematically match the "bottom design" of the pixel array with the "physical characteristics" of the printing device, and therefore the present application proposes an inkjet printing control method of a display panel. The solution of the embodiments of the present application is to determine the pixel slot center distance of the display panel through the nozzle spacing of the inkjet printing control device of the display panel, and then determine the inkjet printing instruction based on the pixel slot center distance and the inkjet printing parameters of the display panel after determining the pixel slot center distance. Finally, the inkjet printing of the display panel can be performed based on the inkjet printing instruction, that is, the design of the display panel (i.e. the pixel slot center distance) and the physical characteristics of the inkjet printing control device of the display panel (i.e. the nozzle spacing) are combined to control the inkjet printing of the display panel, which can avoid the problem of frequent start-stop during the printing process due to the need to ensure the accuracy of positioning. The inkjet printing control method of the display panel combines the design of the display panel and the physical characteristics of the inkjet printing control device of the display panel to realize the inkjet printing of the display panel, and then the display panel can be subjected to targeted inkjet printing to overcome the defect of frequent start-stop during the printing process, thereby improving the effect of inkjet printing control of the display panel.

[0045] It should be noted that the execution subject of the present embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or a device capable of realizing the above functions, an inkjet printing control device of a display panel, etc. The present embodiment and the following embodiments will be described below taking the inkjet printing control device of the display panel as an example.

[0046] Based on this, the present embodiment provides an inkjet printing control method of a display panel, which is applied to an inkjet printing control device of a display panel, and includes the following steps. Figure 1 , Figure 1 FIG. 1 is a flowchart of an inkjet printing control method of a display panel according to a first embodiment of the present application.

[0047] Referring to Figure 1 , the present application provides an inkjet printing control method of a display panel, which is applied to an inkjet printing control device of a display panel, and includes the following steps.

[0048] In step S10, the nozzle spacing of the inkjet printing control device of the display panel and the inkjet printing parameters are obtained, and the pixel slot center distance of the display panel is determined according to the nozzle spacing;

[0049] The inkjet printing control method of the display panel is applied to an inkjet printing control device of the display panel. The inkjet printing control device of the display panel can be a printer for inkjet printing of the display panel, or can be other equipment capable of printing. The inkjet printing control device of the display panel is described as a printer. When inkjet printing of the display panel is required, the nozzle spacing DZ of the inkjet printing control device of the display panel and inkjet printing parameters are obtained. The nozzle spacing DZ refers to the spacing between adjacent nozzles of the printer. The inkjet printing parameters refer to ink parameters during inkjet printing, such as concentration, volatility, tension, and viscosity. The panel parameters include at least the substrate contact angle and the initial geometric properties of the pixel slot. The substrate contact angle refers to the angle between the liquid-gas interface tangent and the solid-liquid interface at the gas-liquid-solid three-phase contact point when a liquid drop falls on a solid substrate surface. The angle directly reflects the strength of the interaction between the liquid molecules and the substrate surface. The initial geometric properties refer to the depth, length, and width of the pixel slot in the display panel. After the nozzle spacing DZ is determined, the pixel slot center distance of the display panel is determined based on the nozzle spacing DZ. The pixel slot center distance of the display panel is used as the "bottom design" of the pixel array, and the nozzle spacing DZ is used as the "physical property" of the printing equipment to systematically match the two, thereby improving the inkjet printing effect. Figure 2 , Figure 2 The figure is a center distance schematic diagram of the inkjet printing control method of the display panel. The figure shows display panels for printing R (red), G (green), and B (blue), respectively. The distance between the center points of the same sub-pixels can be defined as the pixel slot center distance. If the same color is printed, the distance between the center points of two adjacent sub-pixels can be defined as the pixel slot center distance. At this time, the pixel slot center distance can be directly defined as an integer multiple of the nozzle spacing DZ. In this way, it can be ensured that each nozzle can accurately correspond to a column (or a row) of pixel slots in one horizontal scan, thereby fundamentally eliminating the cumulative alignment error caused by the non-integer multiple relationship. The non-integer multiple relationship refers to the printing control method of the prior art. In this way, the pixel slot center distance of the display panel can be designed to ensure the effect of the inkjet printing control of the display panel, that is, to ensure the effect of the entire inkjet printing.

[0050] For the possible process difference between different regions of the large-format panel (such as the center region and the edge region), the arrangement of the pixel slots can be fine-tuned. For example, in the edge region of the panel, the pixel slot spacing can be moderately increased or the opening area of the pixel slot can be adjusted to compensate for the possibly faster solvent evaporation rate in this region, thereby improving the uniformity of film formation on the entire panel. Further, a raised pattern can also be provided in the ink storage groove of the non-display region of the panel to reduce the probability of color mixing between the display region and the non-display region. It is worth noting that the entire inkjet printing process can determine the pixel slot center distance based on the nozzle spacing DZ. At this time, only the nozzle spacing DZ needs to be set to a unit length in advance, and then any unit length of display panel can be generated. Of course, a specific display panel can also be produced based on the known nozzle spacing DZ, wherein the specific display panel needs to satisfy that the pixel slot center distance is an integer multiple of the nozzle spacing DZ. Of course, generally, the nozzle spacing DZ is still more commonly set to a unit length, and then different display panels can be matched.

[0051] In step S20, the inkjet printing instructions are determined according to the pixel slot center distance and the inkjet printing parameters, and the display panel is inkjet printed according to the inkjet printing instructions.

[0052] In the present embodiment, after determining the pixel slot center distance, the pixel slot center distance and the inkjet printing parameters are combined, and then the display panel is inkjet printed based on the inkjet printing instructions. The inkjet printing instructions refer to instructions for controlling the nozzles to achieve printing on the display panel, which can define the ink volume, speed, and inkjet trajectory. For example, based on the ink characteristics and substrate characteristics, the internal region of a single pixel slot can be divided to determine the printing point and the annular printing region to ensure that the ink droplets can spread and dry uniformly in the pixel slot to form a thin film with consistent thickness, such as using the Pasandideh-Fard expression to calculate the ink droplet spreading area. And because the proportional relationship between the pixel slot center distance and the nozzle spacing DZ is determined in advance at this time, the pixel slot corresponding to each group of nozzles can be determined based on the pixel slot center distance, and then the nozzles on the pixel slot are controlled using the pixel slot center distance to accurately correspond to a column (or a row) of pixel slots, thereby fundamentally eliminating the cumulative alignment error caused by the non-integer multiple relationship and improving the effect of inkjet printing.

[0053] In the embodiment, a display panel inkjet printing control method is provided, which is applied to a display panel inkjet printing control device. The display panel inkjet printing control method comprises the following steps: obtaining a nozzle spacing of the display panel inkjet printing control device and inkjet printing parameters; determining a pixel groove center distance of the display panel according to the nozzle spacing; determining an inkjet printing instruction according to the pixel groove center distance and the inkjet printing parameters; and performing inkjet printing on the display panel according to the inkjet printing instruction. The display panel inkjet printing control method determines the pixel groove center distance of the display panel according to the nozzle spacing of the display panel inkjet printing control device, and then determines the inkjet printing instruction based on the display panel with the determined pixel groove center distance and the pixel groove center distance and the inkjet printing parameters. Finally, the display panel is inkjet printed based on the inkjet printing instruction. That is, the design (i.e., the pixel groove center distance) of the display panel and the physical characteristics (i.e., the nozzle spacing) of the display panel inkjet printing control device are combined to control the inkjet printing of the display panel. The problem of frequent start and stop of the entire printing process due to the need to ensure the accuracy of positioning can be avoided. The display panel inkjet printing control method combines the design of the display panel and the physical characteristics of the display panel inkjet printing control device to control the inkjet printing of the display panel, and then the display panel can be inkjet printed specifically to overcome the defect of frequent start and stop of the printing process, thereby improving the effect of inkjet printing control of the display panel.

[0054] Further, based on the first embodiment of the present application, a second embodiment of the display panel inkjet printing control method of the present application is provided. In the embodiment, the pixel groove center distance comprises a first pixel groove center distance between the same sub-pixel center points in the horizontal direction of the display panel and a second pixel groove center distance between the same sub-pixel center points in the vertical direction of the display panel. The step of determining the pixel groove center distance of the display panel according to the nozzle spacing comprises:

[0055] Step S11: determining a first product between the nozzle spacing and a first preset threshold value, and taking the first product as the first pixel groove center distance.

[0056] Step S12: determining a second product between the nozzle spacing and a second preset threshold value, and taking the second product as the second pixel groove center distance. The first preset threshold value and the second preset threshold value are positive integers.

[0057] In the embodiment, the pixel groove center distance comprises a first pixel groove center distance between the same sub-pixel center points in the horizontal direction of the display panel and a second pixel groove center distance between the same sub-pixel center points in the vertical direction of the display panel. That is, the first pixel groove center distance and the second pixel groove center distance can be determined according to the nozzle spacing of the display panel inkjet printing control device. Figure 3 , Figure 3As a scene schematic diagram of the inkjet printing control method of the display panel, the pixel slot center distance of the display panel is a first pixel slot center distance D1 and a second pixel slot center distance D2 in the figure, and a first product between the nozzle pitch DZ and a first preset threshold value is obtained, and the first product is taken as the first pixel slot center distance, and a second product between the nozzle pitch DZ and a second preset threshold value is obtained, and the second product is taken as the second pixel slot center distance, wherein the first preset threshold value and the second preset threshold value are positive integers, and the two can be equal or not equal. For example, the inkjet printing can be directly performed on the display panel with the second pixel slot center distance and the first pixel slot center distance, for example, a printing area is selected on a piece of paper, and the horizontal and vertical pitches are integer multiples of the nozzle pitch DZ, that is, the entire printing can be set to 1 times the nozzle pitch DZ in the horizontal and vertical directions, so that each nozzle can accurately perform inkjet printing on a region, thereby ensuring the printing effect. For example, the horizontal and vertical directions are integer multiples, which can ensure that each nozzle or each row of nozzles can accurately perform inkjet printing on a region to improve the inkjet printing effect.

[0058] Further, based on the first embodiment and the second embodiment of the present application, a third embodiment of the inkjet printing control method of the display panel of the present application is proposed. In the present embodiment, the inkjet printing parameter includes the spreading area of each pixel slot on the display panel and the ink property parameter, and the step S20 of determining the inkjet printing instruction according to the pixel slot center distance and the inkjet printing parameter includes:

[0059] Step S21, sequentially determine the target ink property parameter of the pixel slot based on the pixel slot center distance, wherein the target ink property parameter includes the ink property required by the pixel slot for inkjet printing;

[0060] Step S22, determine the nozzle control instruction in the preset inkjet printing parameter based on the target ink property parameter and the spreading area, and take the nozzle control instruction as the inkjet printing instruction of the pixel slot.

[0061] In the embodiment, after the center distance of the pixel slot of the display panel is determined, the target ink property parameters of the pixel slot are determined in sequence based on the center distance of the pixel slot, wherein the target ink property parameters include the ink property required by the pixel slot for inkjet printing, such as concentration, volatility, tension, viscosity, etc., and then the nozzle control instruction is determined based on the target ink property parameters and the spreading area of a certain pixel slot in the preset inkjet printing parameter, and the nozzle control instruction is taken as the inkjet printing instruction of the pixel slot. For example, the preset inkjet printing parameter refers to the control instruction corresponding to the ink property parameter and the spreading area, for example, in the case of ink property parameter B and spreading area A, the nozzle control instruction is flow S and edge point inkjet F times. Assuming that the area of the red pixel slot is A (i.e. the spreading area) and the related characteristics of the red ink are B (i.e. the target ink property parameters), the nozzle control instruction can be determined based on the AB two characteristics in the preset inkjet printing parameter, i.e. the control instruction of the nozzle for inkjet printing of the red pixel slot, such as control flow, path, etc., for example, the path planning mode based on genetic algorithm, and then the optimized printing path is generated according to the matching relationship of the above AB two characteristics in the preset inkjet printing parameter. Thus, the traditional "step-positioning-injection" discrete mode is changed into the efficient "uniform speed scanning-synchronous injection" continuous mode. It is verified by experiments that the scheme can reduce more than 10% of the invalid travel, shorten the printing time by more than 10%, and significantly improve the problem of uneven material accumulation caused by frequent start and stop.

[0062] In another embodiment, if the target ink property parameters and the spreading areas are all the same, all the nozzles can be controlled according to the same nozzle control instruction, and if the target ink property parameters and the spreading areas are partially the same, the nozzles corresponding to the partially same target ink property parameters and the spreading areas are controlled according to the same nozzle control instruction. For example, Figure 3 the nozzles corresponding to the red pixel slot are controlled according to the same nozzle control instruction, the nozzles corresponding to the green pixel slot are controlled according to the same nozzle control instruction, and the nozzles corresponding to the blue pixel slot are controlled according to the same nozzle control instruction, and then the whole can be controlled to greatly improve the inkjet printing efficiency.

[0063] Further, after the step of determining the inkjet printing instruction according to the center distance of the pixel slot and the inkjet printing parameter, the step includes:

[0064] In step S23, in the case of the equal-length pixel slot, the first target nozzle corresponding to the equal-length pixel slot is determined, and the first target nozzle is bound to the equal-length pixel slot and then written into the inkjet printing instruction, wherein the first target nozzle is used to execute the inkjet printing instruction to realize inkjet printing for the equal-length pixel slot.

[0065] Step S24, in the case of unequal length pixel slots, the second target nozzle corresponding to each unequal length pixel slot is determined in sequence, and the second target nozzle is written into the inkjet printing instruction after being bound to the unequal length pixel slot, wherein the second target nozzle is used to execute the inkjet printing instruction to realize inkjet printing for each unequal length pixel slot.

[0066] For example, in the case of equal length pixel slots, the first target nozzle corresponding to the equal length pixel slot is determined, and the first target nozzle is written into the inkjet printing instruction after being bound to the equal length pixel slot, wherein the first target nozzle is used to execute the inkjet printing instruction to realize inkjet printing for the equal length pixel slot. That is, as shown in FIG. 7, the nozzles corresponding to the green pixel slot eject green ink, and are controlled according to the trajectory and flow determined by the target ink property parameters and the spreading area. Since the pixel slot is an equal length pixel slot, all the nozzles can be directly controlled at this time, for example, 7 nozzles for each pixel slot, so that 7 nozzles can be controlled to realize inkjet printing on the same pixel slot. Since the pixel slot center distance and the nozzle spacing DZ are integer multiples on the design, the same path control and different first target nozzles using different inkjet parameters can be used to realize accurate inkjet on multiple pixel slots at the same time, thereby improving the effect and efficiency of inkjet. Figure 3

[0067] For example, refer to FIG. 6, Figure 4 , Figure 4 ​For another scenario of the inkjet printing control method of the commonly used display panel, in the case of unequal length pixel slots, the second target nozzle corresponding to different unequal length pixel slots is determined in turn, and then the second target nozzle is bound to the unequal length pixel slot and written into the inkjet printing instruction, wherein the second target nozzle is used to execute the inkjet printing instruction for each unequal length pixel slot to realize inkjet printing. For example, the pixel slots are equal length pixel slots, and the red pixel slots are determined to be 1 column 3-10 rows, 4 column 3-10 rows, 7 column 3-10 rows, 1 column 13-20 rows, 1 column 23-30 rows, etc. in the 100 row 10 column nozzle row, and then the above nozzles can be used as the first target nozzle of the red pixel slot, and then the characteristics of the red ink and the area of the red pixel slot are controlled, and at the same time, the green pixel slots are 2 column 3-10 row, 5 column 3-10 row, 8 column 3-10 row, 2 column 13-20 row, 2 column 23-30 row, etc. Then the above nozzles can be used as the first target nozzle of the green pixel slot, and then the characteristics of the green ink and the area of the green pixel slot are controlled. Similarly, the blue color can also be controlled in the above manner, so that the overall printing of three colors can be realized to improve the printing efficiency. Further, when the pixel slots are unequal length pixel slots, only the second target nozzle corresponding to the three colors needs to be determined, and then the second target nozzle is used to execute the inkjet printing instruction for each unequal length pixel slot to realize inkjet printing, for example, the red pixel slot is 1 column 3-10 row, the green pixel slot is 2 column 3-11 row, and the blue pixel slot is 2 column 3-12 row. At this time, through the integer multiple matching of the pixel slot spacing and the nozzle spacing DZ, the "scanning-synchronous ejection" continuous operation mode of the inkjet printing process is realized, the alignment adjustment time is greatly reduced, and the production efficiency and alignment accuracy of the G8.6 large format panel are significantly improved.

[0068] Further, based on the first embodiment, the second embodiment and / or the third embodiment of the present application, a fourth embodiment of the inkjet printing control method of the display panel of the present application is proposed. In this embodiment, the step of performing inkjet printing on the display panel according to the inkjet printing instruction comprises:

[0069] Step a, for each pixel slot on the display panel, determining the target nozzle in the inkjet printing instruction and the inkjet parameter of the target nozzle, and the motion path of the target nozzle;

[0070] Step b, controlling the target nozzle to perform inkjet printing on the pixel slot based on the motion path and the inkjet parameter.

[0071] In the embodiment, during the inkjet printing of the display panel, the inkjet printing instruction of each pixel slot on the display panel is determined, and then the target nozzle of the pixel slot and the inkjet parameter of the target nozzle are determined based on the inkjet printing instruction, and the motion path of the target nozzle is determined, and then the target nozzle is controlled to perform inkjet printing on the pixel slot based on the motion path and the inkjet parameter. For example, the red pixel slot is taken as an example, the inkjet instruction of the red pixel slot is determined based on the ink property parameter and the spreading area, and then the inkjet printing of the nozzle corresponding to the red pixel slot is controlled based on the instruction. Since the nozzles corresponding to other pixel slots can also be controlled synchronously, the efficiency of the inkjet printing is improved. It should be noted that different inkjet printing instructions can be used to control the nozzles of different regions synchronously to improve the efficiency of the inkjet printing, because the inkjet color and the display panel characteristics (area, etc.) corresponding to the inkjet color are different. In addition, since the integer multiple relationship (the relationship between the center distance of the pixel slot and the nozzle spacing DZ) is designed in the above embodiment, the phenomenon of printing disorder or frequent start and stop caused by inaccurate positioning can be avoided, so that the effect of the inkjet printing control of the display panel is improved.

[0072] In an embodiment, the step of performing inkjet printing on the display panel according to the inkjet printing instruction further includes:

[0073] Step c, determining the point nozzle in the inkjet printing instruction and the point printing parameter of the point nozzle.

[0074] Step d, in the case that the positioning of the point nozzle meets the preset positioning point, controlling the point nozzle to perform inkjet printing based on the point printing parameter.

[0075] In the embodiment, the inkjet printing of the display panel further includes determining the point nozzle in the inkjet printing instruction and the point printing parameter of the point nozzle. Since the pixel slot is generally square under normal circumstances, the parameter control and path control of the nozzle corresponding to the pixel slot can be directly used to implement the inkjet printing of the square pixel slot. In addition, when the pixel slot is irregular, the point nozzle and the point printing parameter of the point nozzle are determined in addition to the control method of the square pixel slot. For example, the point nozzle and the point printing parameter of the point nozzle can be determined based on the pixel slot and the nozzle corresponding to the pixel slot. Figure 4, the point position nozzle refers to the nozzle corresponding to the semi-arc region, that is, the nozzle corresponding to the non-square region, the point position printing parameter refers to the printing parameter of the point position nozzle, for example, E1 moment ejects H1 number of inks, E2 moment ejects H2 number of inks, and then realizes the semi-arc ejection, while avoiding ejection to the non-display region (that is, the non-pixel slot), and then the number of ink droplets needed to be ejected in each region can be calculated to ensure the uniformity of the final film thickness. Exemplarily, in the case that the positioning of the point position nozzle meets the preset positioning point, the point position nozzle is controlled to perform inkjet printing based on the point position printing parameter, wherein the preset positioning point can be a preset point, which can be determined according to the running time, or can be determined based on real-time positioning, and then the inkjet printing can be performed on different pixel slots to improve the functionality of inkjet printing.

[0076] Further, in the whole inkjet control process, the number of ink droplets on the path can be calculated to realize accurate control of the amount of ink in the pixel slot. At the same time, combined with the trajectory planning of the printing process and the control of the integral multiple, the wet film printing efficiency is improved, the consistency of ink droplet spreading and drying in each pixel slot is effectively ensured, the film thickness uniformity is significantly improved, the color mixing risk is reduced, and the display quality and product yield are improved. Exemplarily, the nozzle adopts a piezoelectric ceramic actuator as the driving core, and adjusts the lateral position of the nozzle through its nanoscale displacement accuracy to meet the high pitch requirement of seamless splicing. At the same time, a mechanism is designed to allow the whole line head unit or a single nozzle to rotate around an axis perpendicular to the printing surface, and the projection pitch of the nozzle in the scanning direction is adjusted by rotating a small angle, so as to accurately match the pixel slot pitch.

[0077] In an embodiment, after the step of performing inkjet printing on the display panel according to the inkjet printing instruction, the method further comprises:

[0078] Step e, after the completion of this time inkjet printing, the step of performing inkjet printing on the display panel according to the inkjet printing instruction is executed in response to the moving instruction, wherein the moving instruction comprises controlling the nozzle in the inkjet printing control device of the display panel to move horizontally by a distance of the center distance of the pixel slot.

[0079] In this embodiment, the inkjet printing is performed for a large-size display panel, so it is impossible to cover the entire display panel, and thus the next inkjet printing is performed after the current inkjet printing is completed. For example, the current inkjet printing can be completed after the execution of the inkjet printing instruction is ended, or the current inkjet printing can be completed based on a user automatic trigger end instruction. Then, the inkjet printing of the display panel according to the inkjet printing instruction is performed in response to a moving instruction. The moving instruction includes controlling the inkjet nozzle in the inkjet printing control device of the display panel to move horizontally by a distance of at least the pixel slot center distance. After the inkjet nozzle is moved horizontally by the distance of at least the pixel slot center distance, the next inkjet printing process is performed. Of course, the distance value of the moving instruction needs to be determined according to the actual situation. For example, the inkjet nozzle in the inkjet printing control device of the display panel can jet ink to A pixel slots center distance of pixels at a time. After the current inkjet printing is completed, the inkjet nozzle is moved by A pixel slot center distance of pixels, and then the subsequent pixel slots without inkjet printing are inkjet printed. At this time, the inkjet time can be greatly reduced, and the pixel slots can be accurately inkjet printed based on the integer multiple relationship to ensure the inkjet printing effect.

[0080] It should be noted that the above examples are only used to understand the present application and do not limit the inkjet printing control method of the display panel of the present application. More forms of simple transformation based on the technical concept are within the protection scope of the present application.

[0081] The present application also provides an inkjet printing control device of a display panel, which refers to Figure 5 The inkjet printing control device of the display panel comprises:

[0082] A parameter acquisition module 10 is configured to acquire the nozzle spacing of the inkjet printing control device of the display panel and inkjet printing parameters, and determine the pixel slot center distance of the display panel according to the nozzle spacing.

[0083] An inkjet printing module 20 is configured to determine an inkjet printing instruction according to the pixel slot center distance and the inkjet printing parameters, and perform inkjet printing of the display panel according to the inkjet printing instruction.

[0084] The inkjet printing control device of the display panel provided by the present application adopts the inkjet printing control method of the display panel in the above embodiment, and can solve the technical problem of low inkjet printing control efficiency of the display panel. Compared with the prior art, the inkjet printing control device of the display panel provided by the present application has the same beneficial effects as the inkjet printing control method of the display panel provided by the above embodiment, and other technical features of the inkjet printing control device of the display panel are the same as the features disclosed in the above embodiment method, which will not be described here.

[0085] The application provides a display panel inkjet printing control device, which comprises at least one processor and a memory connected with the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the display panel inkjet printing control method in the first embodiment.

[0086] Reference will be made to the following description Figure 6 which shows a structural diagram of the display panel inkjet printing control device suitable for implementing the embodiments of the application. The display panel inkjet printing control device in the embodiments of the application can include, but is not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (Personal Digital Assistant), PADs (Portable Application Description), PMPs (Portable Media Player), vehicle-mounted terminals (for example, vehicle-mounted navigation terminals), and the like, and fixed terminals such as digital TVs, desktop computers, and the like. Figure 6 The display panel inkjet printing control device shown is only an example, and should not bring any limitation to the functions and use range of the embodiments of the application.

[0087] As Figure 6As shown, the inkjet printing control device of the display panel can include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.) that can perform various appropriate actions and processes according to programs stored in a read-only memory (ROM) 1002 or programs loaded from a storage device 1003 into a random access memory (RAM) 1004. In the RAM 1004, various programs and data required for the operation of the inkjet printing control device of the display panel are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; the storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the inkjet printing control device of the display panel to communicate with other devices wirelessly or by wire to exchange data. Although the inkjet printing control device of the display panel with various devices is shown in the figure, it should be understood that it is not required to implement or have all the shown devices. More or fewer devices can be alternatively implemented or provided.

[0088] In particular, according to embodiments of the present disclosure, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a computer-readable computer medium, the computer program containing program code for executing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network by a communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the methods of the embodiments of the present disclosure are performed.

[0089] The inkjet printing control device of the display panel provided by the present disclosure adopts the inkjet printing control method of the display panel in the above-mentioned embodiments, and can solve the technical problem of low inkjet printing control efficiency of the display panel. Compared with the prior art, the inkjet printing control device of the display panel provided by the present disclosure has the same beneficial effects as the inkjet printing control method of the display panel provided by the above-mentioned embodiments, and other technical features in the inkjet printing control device of the display panel are the same as the features disclosed in the previous embodiment method, which will not be repeated here.

[0090] It should be understood that various aspects disclosed herein can be implemented in hardware, software, firmware, or combinations thereof, to achieve the various aspects disclosed herein. In the description above, specific terminology is used to describe particular features, configurations, materials, or characteristics. But such terminology is merely used for convenience and is not intended to limit the application.

[0091] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0092] The present application provides a computer medium having computer readable program instructions (i.e. computer programs) stored thereon, the computer readable program instructions being used to execute the inkjet printing control method of the display panel in the above embodiment.

[0093] The computer medium provided by the present application may, for example, be a U disk, but is not limited to an electric, magnetic, optical, electromagnetic, infrared, or semiconductor system, system, or device, or any combination of the above. More specific examples of the computer medium can include, but are not limited to, an electric connection having one or more conductive wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present embodiment, the computer medium can be any tangible computer medium containing or storing a program, which can be used by or in combination with an instruction execution system, system, or device. The program code contained on the computer medium can be transmitted by any suitable computer medium, including but not limited to an electric wire, an optical cable, an RF (Radio Frequency), etc., or any suitable combination of the above.

[0094] The above computer medium can be contained in the inkjet printing control device of the display panel; or can exist separately and not be assembled into the inkjet printing control device of the display panel.

[0095] The above computer medium carries one or more programs, which, when executed by the inkjet printing control device of the display panel, cause the inkjet printing control device of the display panel to:

[0096] The inkjet printing control device of the display panel acquires the nozzle pitch and inkjet printing parameters, and determines the pixel slot center distance of the display panel according to the nozzle pitch;

[0097] The inkjet printing control device of the display panel determines the inkjet printing instruction according to the pixel slot center distance and the inkjet printing parameters, and performs inkjet printing on the display panel according to the inkjet printing instruction.

[0098] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0099] The flow diagrams and the block diagrams in the drawings are illustrations of architectures, functionalities, and operations of possible implementations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flow diagrams or block diagrams can represent a module, a procedure, or a part of code, which comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or in the reverse order, depending on the functionality involved. It is also noted that each block in the block diagrams and / or flow diagrams and combinations of blocks in the block diagrams and / or flow diagrams can be implemented by special-purpose hardware-based systems that perform the specified functions or operations, or combinations of special-purpose hardware and computer instructions.

[0100] The modules involved in the embodiments of the present application can be implemented in the form of software or in the form of hardware. In some cases, the name of the module does not constitute a limitation on the module itself.

[0101] The computer medium provided by the present application is a computer readable storage computer medium, and computer readable program instructions (i.e., a computer program) for executing the inkjet printing control method of the display panel are stored on the computer readable storage computer medium, thereby solving the technical problem of low inkjet printing control efficiency of the display panel. Compared with the prior art, the computer medium provided by the present application has the same beneficial effects as the display panel inkjet printing control method provided by the above-mentioned embodiments, and will not be described here.

[0102] The present application also provides a computer program product comprising a computer program, which, when executed by a processor, implements the steps of the display panel inkjet printing control method as described above.

[0103] The computer program product provided by the present application can solve the technical problem of low inkjet printing control efficiency of the display panel. Compared with the prior art, the computer program product provided by the present application has the same beneficial effects as the display panel inkjet printing control method provided by the above-mentioned embodiments, and will not be described here.

[0104] The above is only some embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A method for controlling inkjet printing on a display panel, characterized in that, The inkjet printing control method for the display panel is applied to the inkjet printing control device for the display panel, and the inkjet printing control method for the display panel includes: The process involves obtaining the nozzle spacing and inkjet printing parameters of the inkjet printing control device for the display panel, and determining the pixel slot center distance of the display panel based on the nozzle spacing. The inkjet printing parameters include the spreading area of ​​each pixel slot on the display panel and ink property parameters. The pixel slot center distance includes a first pixel slot center distance between the center points of the same sub-pixels in the horizontal direction and a second pixel slot center distance between the center points of the same sub-pixels in the vertical direction. The step of determining the pixel slot center distance of the display panel based on the nozzle spacing includes: determining a first product between the nozzle spacing and a first preset threshold, and using the first product as the first pixel slot center distance; determining a second product between the nozzle spacing and a second preset threshold, and using the second product as the second pixel slot center distance, wherein the first preset threshold and the second preset threshold are positive integers. The inkjet printing command is determined based on the pixel slot center distance and the inkjet printing parameters, and the display panel is inkjet printed according to the inkjet printing command.

2. The inkjet printing control method for a display panel as described in claim 1, characterized in that, The step of determining the inkjet printing command based on the pixel slot center distance and the inkjet printing parameters includes: Based on the center distance of the pixel slots, the target ink property parameters of the pixel slots are determined sequentially, wherein the target ink property parameters include the ink properties that the pixel slots need to be inkjet printed. Based on the target ink property parameters and the spreading area, a nozzle control command is determined from the preset inkjet printing parameters, and the nozzle control command is used as the inkjet printing command for the pixel slot.

3. The inkjet printing control method for a display panel as described in claim 2, characterized in that, After the step of determining the inkjet printing command based on the pixel slot center distance and the inkjet printing parameters, the following is included: When the pixel slot is an equal-length pixel slot, a first target nozzle corresponding to the equal-length pixel slot is determined, and the first target nozzle is bound to the equal-length pixel slot before the inkjet printing instruction is written. The first target nozzle is used to execute the inkjet printing instruction for the equal-length pixel slot to achieve inkjet printing. When the pixel slots are of unequal length, the second target nozzles corresponding to different unequal length pixel slots are determined sequentially, and the second target nozzles are bound to the unequal length pixel slots before the inkjet printing command is written. The second target nozzles are used to execute the inkjet printing command for each unequal length pixel slot to achieve inkjet printing.

4. The inkjet printing control method for a display panel as described in claim 1, characterized in that, The step of performing inkjet printing on the display panel according to the inkjet printing instruction includes: For each pixel slot on the display panel, determine the target nozzle and the inkjet parameters of the target nozzle in the inkjet printing command, as well as the movement path of the target nozzle; Based on the motion path and the inkjet parameters, the target nozzle is controlled to perform inkjet printing on the pixel slot.

5. The inkjet printing control method for a display panel as described in claim 1, characterized in that, The step of inkjet printing the display panel according to the inkjet printing instruction further includes: Determine the dot nozzle in the inkjet printing command and the dot printing parameters of the dot nozzle; When the positioning of the nozzle at the point satisfies the preset positioning point, the nozzle at the point is controlled to perform inkjet printing based on the point printing parameters.

6. The inkjet printing control method for a display panel as described in any one of claims 1 to 5, characterized in that, After the step of performing inkjet printing on the display panel according to the inkjet printing instruction, the following steps are included: After the inkjet printing is completed, in response to the movement command, the step of inkjet printing the display panel according to the inkjet printing command is executed, wherein the movement command includes controlling the nozzle in the inkjet printing control device of the display panel to move horizontally by the distance of the center distance of the pixel slots.

7. An inkjet printing control device for a display panel, characterized in that, The inkjet printing control device for the display panel includes: The parameter acquisition module is used to acquire the nozzle spacing and inkjet printing parameters of the inkjet printing control device of the display panel, and to determine the pixel slot center distance of the display panel based on the nozzle spacing. The inkjet printing parameters include the spreading area of ​​each pixel slot on the display panel and ink property parameters. The pixel slot center distance includes a first pixel slot center distance between the center points of the same sub-pixels in the horizontal direction and a second pixel slot center distance between the center points of the same sub-pixels in the vertical direction. The step of determining the pixel slot center distance of the display panel based on the nozzle spacing includes: determining a first product between the nozzle spacing and a first preset threshold, and using the first product as the first pixel slot center distance; determining a second product between the nozzle spacing and a second preset threshold, and using the second product as the second pixel slot center distance, wherein the first preset threshold and the second preset threshold are positive integers. The inkjet printing module is used to determine the inkjet printing command based on the pixel slot center distance and the inkjet printing parameters, and to perform inkjet printing on the display panel according to the inkjet printing command.

8. An inkjet printing control device for a display panel, characterized in that, The inkjet printing control device for the display panel includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the inkjet printing control method for the display panel as described in any one of claims 1 to 6.

9. A computer medium, characterized in that, The computer medium is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the inkjet printing control method for the display panel as described in any one of claims 1 to 6.

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