Printing method and printing apparatus for protective layer of display device

Abstract

This invention discloses a printing method and apparatus for a protective layer for a display device. The method identifies the boundary region of metal wiring on the display panel and determines the printing parameters of the retaining wall layer based on the boundary region and thickness parameters of the metal wiring. The printing parameters of the protective layer are determined based on the protective region between the boundary region of metal wiring and the display area, and the thickness parameters. The retaining wall layer material is prepared based on a preset protective layer material, and a first printing valve is controlled to perform printing, and a second printing valve is also controlled to perform printing. By printing the retaining wall layer and the protective layer in sequence, the uniformity of the height and regularity of the shape of the protective layer can be effectively ensured. Furthermore, by utilizing the property of compatibility between the protective layer material and the retaining wall layer material, the position of the retaining wall layer is at the boundary of the metal wiring, and the overall coverage area of ​​the protective layer is not affected. This enables precise control over the protective layer, ensuring a visual experience that meets the high demands of users, and significantly improving the competitiveness of the display product.

Description

Technical Field

[0001] The present invention belongs to the technical field of display panel processing, and particularly relates to a printing method and a printing device for a protective layer of a display device.

Background Art

[0002] In recent years, the design of "high screen occupancy" and thus "full screen" has gradually become the main design of electronic products such as mobile phones, tablets, notebook computers, and televisions. This "high screen occupancy" or "full screen" means that with the same volume, the display device has a larger display area, thereby effectively improving the user experience. As one of the most effective ways to improve the screen occupancy, there is a method of bending the display driver IC and embedding it inside the side of the OLED display. However, in the bending process, how to effectively protect the fragile metal wiring has become one of the most important factors. Currently, panel manufacturers on the market directly apply a flexible UV curable adhesive to the metal wiring using a piezoelectric valve or other inkjet devices before bending to protect the metal wiring as a metal cover layer (MCL), and by improving the resistance and durability of the flexible substrate, the risk of bright lines during bending and subsequent product use is reduced.

[0003] However, the coating material used in the prior art has a low viscosity and high fluidity, and after directly printing using a conventional piezoelectric valve, it is impossible to maintain the thickness and the shape of the line of the protective layer, not only greatly reducing the protection effect, but also affecting the visual experience with high requirements of users.

Summary of the Invention

[0004] The present invention provides a printing method and apparatus for a protective layer for a display device in order to solve technical problems such as the low viscosity and high fluidity of the above-mentioned coating material, which makes it impossible to maintain the thickness and line shape of the protective layer after printing using a conventional piezoelectric valve, resulting in a significant reduction in protective effect and affecting the visual experience that meets the high demands of users. The technical solution is as follows.

[0005] According to a first aspect, an embodiment of the present invention provides a method for printing a protective layer for a display device. The method is The steps include identifying the boundary area of ​​the metal wiring on the display panel and determining the printing parameters of the retaining wall layer based on the boundary area of ​​the metal wiring and a preset thickness parameter, The steps include determining the printing parameters of the protective layer based on the protective area between the boundary area of ​​the metal wiring on the display panel and the display area, and a preset thickness parameter, The process includes the steps of preparing a retaining wall layer material based on a preset protective layer material, controlling a first printing valve to perform printing based on the printing parameters of the retaining wall layer and the retaining wall layer material, and controlling a second printing valve to perform printing based on the printing parameters of the protective layer and a preset protective layer material. Here, the preset protective layer material and the retaining wall layer material are compatible.

[0006] As an alternative solution to the first embodiment, before determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring and a preset thickness parameter, The bottom of the display panel is fixed to a suction cup, and at least two marking points on the substrate surface of the display panel are identified based on the top camera, To determine whether the connecting line formed by any two adjacent marking points is parallel to the calibration line corresponding to the direction of movement of the first printing valve, If it is detected that the connecting wire is not parallel to the calibration wire, the suction cup will be rotated based on the angle between the connecting wire and the calibration wire until the connecting wire is parallel to the calibration wire. If it is detected that the connecting line is parallel to the calibration line, the method further includes determining the position of each marking point in a predetermined spatial orthogonal coordinate system.

[0007] The step of determining the printing parameters of the retaining wall layer based on the boundary area of ​​the metal wiring and a preset thickness parameter is: This includes determining the printing parameters for the retaining wall layer based on the boundary area of ​​the metal wiring, a preset thickness parameter, and the position of each marking point.

[0008] As another alternative solution in the first embodiment, determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring, a preset thickness parameter, and the position of each marking point is: Based on the position of each marking point, the vertex position furthest from the display area in the boundary region of the metal wiring is determined, and this vertex position is set as the initial printing position of the retaining wall layer. The printing path of the retaining wall layer is determined based on the boundary line furthest from the display area in the boundary region of the metal wiring, and a preset thickness parameter. This includes setting the initial printing position and printing path of the retaining wall layer as the printing parameters of the retaining wall layer.

[0009] As another alternative solution in the first embodiment, the steps of determining the protective area between the boundary area of ​​the metal wiring on the display panel and the display area, and the printing parameters of the protective layer based on a preset thickness parameter, Based on the position of each marking point, the vertex position closest to the display area within the protected area is determined, and this vertex position is set as the initial printing position of the protective layer. The bottom surface area of ​​the protective layer is determined based on the length and width of the metal wiring corresponding to the protected area, and the printing path of the protective layer is determined based on the bottom surface area of ​​the protective layer and a preset thickness parameter. This includes defining the initial printing position and printing path of the protective layer as printing parameters for the protective layer.

[0010] As another alternative solution in the first embodiment, preparing the retaining wall layer material based on a predetermined protective layer material is: Preparing a retaining wall layer material by mixing a pre-determined protective layer material and a thixotropic agent in a predetermined volume ratio, or This includes preparing a retaining wall layer material by mixing a pre-defined protective layer material and a thickener in a predetermined volume ratio.

[0011] As another alternative solution of the first embodiment, before controlling the first printing valve to perform printing based on the printing parameters and material of the retaining wall layer, The steps include controlling a laser sensor to scan the substrate surface of the display panel and obtaining the height of the substrate surface of the display panel, The steps include measuring the current height of the first printing valve and obtaining a target height based on the difference between the current height, the height of the substrate surface, and a preset printing height. The method further includes the step of controlling the first printing valve to move vertically downward based on a target height so that the height between the first printing valve and the substrate surface of the display panel becomes a preset printing height.

[0012] As another alternative solution of the first embodiment, before performing the printing process based on the protective layer printing parameters and preset protective layer material, the second printing valve is controlled. If it is detected that the pre-set thickness parameter is within the pre-set first thickness range, the type of the second printing valve is determined to be a piezoelectric printing valve. If it is detected that the pre-set thickness parameter is within the pre-set second thickness range, it is determined that the type of the second printing valve is an inkjet printing valve, or If it is detected that a preset thickness parameter is within a preset second thickness range, the system further includes determining that the type of the second print valve is a direct drawing print valve, where the preset first thickness range is smaller than the preset second thickness range.

[0013] As another alternative solution of the first embodiment, before controlling the first printing valve to perform printing based on the printing parameters and material of the retaining wall layer, To acquire an image of the surface of the display panel's circuit board, If impurities are detected on the substrate surface in the image of the substrate surface, the substrate surface of the display panel may be subjected to solvent wiping treatment, or The method further includes, if impurities are detected on the substrate surface in the image of the substrate surface, blowing them off with an air knife onto the substrate surface of the display panel.

[0014] As another alternative solution in the first embodiment, after controlling the first printing valve to perform printing based on the printing parameters and retaining wall material of the retaining wall layer, before controlling the second printing valve to perform printing based on the printing parameters and preset protective layer material of the protective layer, The method further includes performing a hardening treatment on the retaining wall layer on the substrate surface.

[0015] As another alternative solution in the first embodiment, after curing the retaining wall layer on the substrate surface, before controlling the second printing valve to perform printing based on the printing parameters of the protective layer and the preset protective layer material, The method further includes performing a surface treatment on the retaining wall layer on the substrate surface.

[0016] According to a second aspect, an embodiment of the present invention provides a printing apparatus for a protective layer for a display device. The apparatus is A first determination module used to identify the boundary area of ​​metal wiring on a display panel and to determine the printing parameters of the retaining wall layer based on the boundary area of ​​metal wiring and a preset thickness parameter, A protective area between the boundary area of ​​the metal wiring on the display panel and the display area, and a second determination module used to determine the printing parameters of the protective layer based on a preset thickness parameter, Prepare a retaining wall layer material based on a preset protective layer material, and control a first printing valve to perform a printing process based on the printing parameters of the retaining wall layer and the retaining wall layer material, and control a second printing valve to perform a printing process based on the printing parameters of the protective layer and the preset protective layer material. Here, the preset protective layer material is compatible with the retaining wall layer material.

[0017] According to a third aspect, an embodiment of the present invention further provides a printing device for a protective layer of a display device including a processor and a memory.

[0018] The processor and the memory are connected.

[0019] The memory is used to store executable program codes.

[0020] The processor reads the executable program code stored in the memory, executes a program corresponding to the executable program code, and is used to implement the printing method of the protective layer for a display device according to the first aspect or any implementation manner of the first aspect in the embodiments of the present invention.

[0021] According to a fourth aspect, the present invention provides a computer storage medium storing a computer program including program instructions. When the program instructions are executed by a processor, the printing method of the protective layer for a display device according to the first aspect or any implementation manner of the first aspect of the present invention can be realized.

Advantages of the Invention

[0022] When printing a protective layer on metal wiring of a display panel, the boundary area of ​​the metal wiring can be identified on the display panel, and the printing parameters of the retaining wall layer can be determined based on the boundary area of ​​the metal wiring and a preset thickness parameter. The printing parameters of the protective layer can be determined based on the protective area between the boundary area of ​​the metal wiring and the display area on the display panel, and a preset thickness parameter. The retaining wall layer material can be prepared based on a preset protective layer material, and the first printing valve can be controlled to perform printing based on the printing parameters and retaining wall layer material of the retaining wall layer, and the second printing valve can be controlled to perform printing based on the printing parameters and preset protective layer material of the protective layer. By printing the retaining wall layer and the protective layer sequentially, the uniformity of the thickness and regularity of the shape of the protective layer can be effectively ensured. Furthermore, since the retaining wall layer is located at the boundary of the metal wiring, and by utilizing the compatibility between the protective layer material and the retaining wall layer material, the coverage area of ​​the protective layer is not affected after the retaining wall layer and the protective layer have become compatible. This enables precise control over the protective layer, ensuring a visual experience that meets the high demands of users, and significantly improving the competitiveness of the display product. [Brief explanation of the drawing]

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings necessary for use in the embodiments are briefly described below. The drawings in the following description represent only a few embodiments of the present invention, and it will be obvious to those skilled in the art that other drawings can be obtained based on these drawings without requiring any creative effort.

[0024] [Figure 1] This is a schematic diagram showing the printing effect of a conventional protective layer according to an embodiment of the present invention. [Figure 2] This is an overall flowchart of the printing method for a protective layer for a display device according to an embodiment of the present invention. [Figure 3] This is a schematic diagram of a printed valve according to an embodiment of the present invention. [Figure 4] This is a schematic diagram showing the printing effect of the retaining wall layer according to an embodiment of the present invention. [Figure 5] This is a schematic diagram showing the printing effect of the protective layer according to an embodiment of the present invention. [Figure 6] This is a schematic diagram illustrating the overall effect of the protective layer according to an embodiment of the present invention. [Figure 7] This is a schematic diagram illustrating the overall effect of another protective layer according to an embodiment of the present invention. [Figure 8] This is a schematic diagram of a printing apparatus for a protective layer for a display device according to an embodiment of the present invention. [Figure 9] This is a schematic diagram of another printing apparatus for a protective layer for a display device according to an embodiment of the present invention. [Modes for carrying out the invention]

[0025] The technical solutions in embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments.

[0026] In the following description, the terms “First” and “Second” are used solely for illustrative purposes and should not be understood as indicating or implying relative importance. The following description provides several embodiments of the present invention. Different embodiments may be substituted or combined, and therefore the present invention may be considered to encompass all possible combinations of the identical and / or different embodiments described. Accordingly, if one embodiment includes features A, B, and C and another embodiment includes features B and D, even if not explicitly stated below, the present invention should be interpreted as encompassing embodiments that include one or more other possible combinations of A, B, C, and D.

[0027] The following description is for illustrative purposes only and does not limit the scope, applicability, or examples described in the claims. Modifications can be made to the function and arrangement of the described elements, as long as they do not deviate from the scope of the invention. Various steps and components can be omitted, replaced, or added as appropriate in the individual examples. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Features described in some examples may also be combined with others.

[0028] Please refer to Figure 1. Figure 1 shows a schematic diagram of the printing effect of a conventional protective layer according to an embodiment of the present invention.

[0029] The upper schematic diagram in Figure 1 should be understood as a side view of a conventional protective layer, and the lower schematic diagram as a plan view of a conventional protective layer. In these two schematic diagrams, the display panel in the display device may include a display area, an IC (i.e., a screen driver), and metal wiring. This metal wiring is located between the display area and the IC (one side is completely bonded to the display area), and the protective layer for protecting this metal wiring is also located between the display area and the IC, covering the top surface of this metal wiring. As is clear from the angle of the side view, the conventional method of applying the protective layer involves directly applying the protective layer material to the top surface of the metal wiring. Because this protective layer material is fluid (low viscosity), a slope (which can also be understood as diffusion) of a certain distance occurs, making it impossible to ensure uniformity of the thickness of the protective layer on the top surface of the metal wiring, resulting in excessive waste of the protective layer. Also, as can be seen from the angle of the plan view, the shape of the boundary of the protective layer material is not controlled during the slope formation process. In other words, it becomes impossible to ensure the regularity of the shape of the protective layer on the top surface of the metal wiring, which not only significantly reduces the protective effect but also affects the visual experience that meets the high demands of users.

[0030] To solve the technical defects present in the prior art described above, the present invention will be explained by providing one or more of the following embodiments.

[0031] Please refer to Figure 2. Figure 2 shows an overall flowchart of the printing method for a protective layer for a display device according to an embodiment of the present invention.

[0032] As shown in Figure 2, this method for printing a protective layer for a display device may include at least the following steps.

[0033] Step 202: Identify the boundary area of ​​the metal wiring on the display panel, and determine the printing parameters for the retaining wall layer based on the boundary area of ​​the metal wiring and the preset thickness parameters.

[0034] In embodiments of the present invention, the method for printing a protective layer for a display device may, but is not limited to, be applied to a control terminal of a controllable motion platform. The control platform may include at least a marble suction cup (rotatably controllable) for fixing the substrate of the display device, a top camera positioned above the marble suction cup, a gantry for controlling a first printing valve, a gantry for controlling a second printing valve, and a laser rangefinder for measuring the height of the printing valve and the height of the display panel. Here, the first printing valve may be used to print a retaining wall layer on the substrate surface of the display device. The retaining wall layer may be located at the boundary of metal wiring, and the type of the first printing valve may, but is not limited to, a pneumatic dispensing valve, a piezoelectric injection valve, or a 3D direct drawing printing valve. The second printing valve may be used to print a protective layer on the substrate surface of the display device after the retaining wall layer has been printed. The protective layer may be located between the display area of ​​the display panel and the retaining wall layer and is used together with the retaining wall layer to completely cover the top surface of the metal wiring. The second type of printing valve may be, but is not limited to, a pneumatic dispensing valve, a piezoelectric injection valve, a 3D direct drawing printing valve, or an inkjet printing valve, and may be determined according to the thickness of the protective layer required by the user.

[0035] To make it easier to understand, in embodiments of the present invention, the gantry for controlling the first printing valve and the gantry for controlling the second printing valve may be the same gantry. That is, the same gantry controls the first printing valve to first perform the retaining wall layer printing process, and after the printing of the retaining wall layer is completed, the second printing valve is controlled to perform the protective layer printing process. During the process of controlling the first printing valve, the second printing valve is in a non-operating state, and during the process of controlling the second printing valve, the first printing valve is in a non-operating state. Now, please refer to Figure 2, which shows the overall flowchart of the method for printing a protective layer for a display device according to an embodiment of the present invention. As shown in Figure 3, the substrate of the display device is attached to a suction cup, and the gantry positioned above the suction cup can control a printing valve for printing the retaining wall layer and a printing valve for printing the protective layer, respectively. Here, the type of printing valve for printing the retaining wall layer and the type of printing valve for printing the protective layer are different; the printing valve for printing the retaining wall layer is located in the printing area of ​​the retaining wall layer, and the printing valve for printing the protective layer is located in the printing area of ​​the protective layer.

[0036] It should be noted that the material filled in the syringe corresponding to the first printing valve is the retaining wall layer material, and the material filled in the syringe corresponding to the second printing valve is the protective layer filling material, and in the embodiments of the present invention, the protective layer filling material and the retaining wall layer material are compatible materials. As a selective method, the retaining wall layer material may be prepared by mixing a small amount of thixotropic agent with the protective layer filling material, or by mixing a small amount of thickener with the protective layer filling material. This makes it possible to improve shape retention without changing the mechanical properties of the material, and to cover the upper surface of the metal wiring together with the protective layer filling material without destroying the microstructure of the protective layer.

[0037] Here, the display devices referred to in the embodiments of the present invention include, but are not limited to, mobile terminals with a display panel such as mobile phones, displays, or laptop computers.

[0038] Specifically, when printing a protective layer on the metal wiring of a display panel, the display panel can first be attached to a suction cup, and the boundary area of ​​the metal wiring on the display panel can be identified using a top camera or other imaging device, but is not limited to this. Here, the boundary area of ​​the metal wiring can be understood as a rectangular area encompassing the entire metal wiring. That is, the metal wiring is located entirely within the rectangular area, and one boundary line of this rectangular area may, but is not limited to, completely overlap with the edge line of the display area, while the other two symmetrical boundary lines may, but are not limited to, be located on the edge line of the display panel, thereby facilitating the printing process of the retaining wall layer and protective layer. As can be understood, the method for identifying the boundary area of ​​the metal wiring on the display panel may be a conventional image recognition technique. This is a conventional technique in the art, and its explanation is omitted here. Naturally, in embodiments of the present invention, the boundary area of ​​the metal wiring on the display panel can also be identified by manual or other means, but is not limited to this.

[0039] Furthermore, after identifying the boundary region of the metal wiring, the printing region of the retaining wall layer is first determined based on the boundary region of the metal wiring, the initial printing position is determined through the printing region of the retaining wall layer, and then the printing path of the retaining wall layer is obtained by combining it with a preset thickness parameter, and the printing parameters of the retaining wall layer are then obtained. Here, the preset thickness parameter may be understood as the thickness of the protective layer to cover the metal wiring that meets the user's needs. This is because the protective layer filling material and the retaining wall layer material are compatible materials, meaning that the printing thickness of the retaining wall layer and the printing thickness of the protective layer are the same.

[0040] As an alternative embodiment of the present invention, before determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring and a preset thickness parameter, The bottom of the display panel is fixed to a suction cup, and at least two marking points on the substrate surface of the display panel are identified based on the top camera, To determine whether the connecting line formed by any two adjacent marking points is parallel to the calibration line corresponding to the direction of movement of the first printing valve, If it is detected that the connecting wire is not parallel to the calibration wire, the suction cup will be rotated based on the angle between the connecting wire and the calibration wire until the connecting wire is parallel to the calibration wire. If it is detected that the connecting line is parallel to the calibration line, the method further includes determining the position of each marking point in a predetermined spatial orthogonal coordinate system.

[0041] The step of determining the printing parameters of the retaining wall layer based on the boundary area of ​​the metal wiring and a preset thickness parameter is: This includes determining the printing parameters for the retaining wall layer based on the boundary area of ​​the metal wiring, a preset thickness parameter, and the position of each marking point.

[0042] To ensure the printing effect and accuracy of the retaining wall layer, it is possible to determine whether or not the display panel needs to be rotated on the suction cup by the angle between the connection line formed by any two adjacent marking points on the substrate surface of the display panel and the calibration line. Furthermore, during the process of printing the retaining wall layer, it is possible to ensure that the direction in which the first printing valve moves laterally along the plane remains parallel to the long side direction of the display panel, and the direction in which it moves vertically along the plane remains parallel to the short side direction of the display panel. Here, the calibration line may be a line segment parallel to the direction of movement in the horizontal direction of the plane and a line segment parallel to the direction of movement in the vertical direction of the plane, and there is a perpendicular relationship between the line segment parallel to the direction of movement in the horizontal direction of the plane and the line segment parallel to the direction of movement in the vertical direction of the plane.

[0043] Specifically, the bottom of the display panel substrate is first attached to a suction cup, the top camera is controlled to move directly above the display panel substrate and photograph the top surface of the display panel substrate, and at least two marking points on the surface of the display panel substrate are identified in the captured image through a visual algorithm. To understand this, at least two marking points are pre-set on the surface of the display panel substrate in the embodiment of the present invention, and the position of each marking point on the surface of the display panel substrate is relatively fixed. For example, one marking point can be set at each of the four vertices of the surface of the display panel substrate, and the connecting line between any two adjacent marking points can remain parallel to the long or short side of the display panel substrate.

[0044] Next, after identifying all marking points on the substrate surface of the display panel, any two adjacent marking points can be connected, and it can be determined whether the angle between this connection line and any one calibration line is 0 degrees. If it is possible that the angle between this connection line and any one calibration line is detected to be 0 degrees, it indicates that the connection line formed by the two adjacent marking points and any one calibration line are parallel, and further, in combination with a preset spatial orthogonal coordinate system, the position coordinates of each marking point in the preset spatial orthogonal coordinate system can be determined. Here, the preset spatial orthogonal coordinate system may, but is not limited to, being established based on the plane on which the motion platform is located. For example, the center or any vertex of the suction cup can be used as the origin of the coordinate system, but is not limited to this.

[0045] If it is detected that the angle between this connection line and any one calibration line is not 0 degrees, it indicates that the connection line formed by any two adjacent marking points and any one calibration line are not parallel. In this case, the suction cup can be rotated based on the angle between this connection line and any one calibration line until the angle between them becomes 0 degrees, and the position coordinates of each marking point in the preset spatial orthogonal coordinate system can be determined in combination with this preset spatial orthogonal coordinate system.

[0046] Next, after obtaining the position of each marking point, the printing parameters for the retaining wall layer can be determined based on the boundary region of the metal wiring, a preset thickness parameter, and the position of each marking point. Here, the printing parameters for the retaining wall layer include, but are not limited to, the printing path and initial printing position of the retaining wall layer. In other words, after determining the printing parameters for the retaining wall layer, the first printing valve can be controlled to first move to the initial printing position and then perform the printing process of the retaining wall layer along the printing path. Here, since each marking point on the substrate surface of the display panel is fixed relative to its position in front of the boundary region of the metal wiring, after determining the position of each marking point in a preset spatial orthogonal coordinate system, any position in the boundary region of the metal wiring in the preset spatial orthogonal coordinate system can be derived based on the positional relationship between the position of any marking point and any one location in the boundary region of the metal wiring on the substrate of the display panel.

[0047] As another alternative to the embodiments of the present invention, determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring, a preset thickness parameter, and the position of each marking point is possible. The steps include determining the vertex position furthest from the display area in the boundary region of the metal wiring based on the position of each marking point, and setting the vertex position as the initial printing position of the retaining wall layer, The steps include determining the printing path of the retaining wall layer based on the boundary line furthest from the display area in the boundary region of the metal wiring, and a preset thickness parameter, The process includes the step of setting the initial printing position and printing path of the retaining wall layer as the printing parameters of the retaining wall layer.

[0048] Specifically, in the process of determining the printing parameters for the retaining wall layer, in order to effectively maintain the uniformity of the thickness and regularity of the shape of the protective layer, it is necessary to position the retaining wall layer on the side furthest from the display area of ​​the metal wiring. Therefore, the boundary line furthest from the display area in the boundary area of ​​the metal wiring can be predetermined. Furthermore, in order to improve printing efficiency, one of the vertices of this boundary line can be set as the initial printing position of the retaining wall layer, but is not limited to this. Here, since the position of any marking point and any one location in the boundary area of ​​the metal wiring have a fixed relative positional relationship on the substrate of the display panel, the position coordinates of one of the vertices of the boundary line can be derived based on the position coordinates of any marking point and the relationship between the marking point and one of the vertices of the boundary line. This allows the first printing valve to be moved directly above the vertex according to these position coordinates.

[0049] It should be noted that the initial printing position of the retaining wall layer in the embodiments of the present invention may be set within the area between the boundary line of the metal wiring and the IC (display driver). That is, the retaining wall layer is not limited to being printed on the boundary line of the metal wiring, but may be printed on a path within a predetermined range from the boundary line of the metal wiring, for example. Here, the length of the path is kept to match the length of the boundary line of the metal wiring, and the path and the boundary line of the metal wiring are parallel to each other.

[0050] Next, in order to effectively control the input cost of the protective layer material, the boundary line furthest from the display area in the boundary region of the metal wiring may be used as the bottom surface movement path for the retaining wall layer. That is, the path corresponding to moving from one vertex of the boundary line to the other vertex is used as the bottom surface printing path for the first printing valve, and based on a preset thickness parameter and the printing amount per unit time of the first printing valve (which may be understood as the adhesive discharge amount), a thickness printing path is obtained in which the first printing valve moves back and forth along one vertex of the boundary line to the other vertex, thereby maintaining the thickness of the retaining wall layer after curing, printed by the first printing valve, to match the preset thickness parameter. Here, as the first printing valve moves along the printing path, the printing amount corresponding to each printing position along the path is controlled to be the same, thereby ensuring uniformity of the thickness of the retaining wall layer.

[0051] Please refer here to the schematic diagram of the printing effect of the retaining wall layer according to an embodiment of the present invention shown in Figure 4. As shown in Figure 4, the retaining wall layer is located on the side furthest from the display area of ​​the metal wiring. Printing can be completed by a first printing valve, which is a 3D direct drawing printing valve, but is not limited to this. Here, the space between the retaining wall layer and the display area is the printing area of ​​the protective layer. As can be seen, due to the low viscosity of the retaining wall layer material and the effect of gravity, the length of the bottom cross section of the retaining wall layer is longer than the length of the top cross section. That is, the side structure of the retaining wall layer in Figure 4 approximates a trapezoid.

[0052] Step 204: Determine the printing parameters for the protective layer based on the protective area between the boundary area of ​​the metal wiring on the display panel and the display area, and the preset thickness parameter.

[0053] Specifically, in order to more effectively control the material input cost of the protective layer and ensure the printing effect of the protective layer, the boundary line closest to the display area in the boundary region of the metal wiring may be determined first. As can be understood, since one side of the metal wiring is bonded to the display area, this boundary line is also the boundary line of the display area, and thus any vertex of this boundary line can be set as the initial printing position of the protective layer. Here, since the position of any marking point and any one point in the boundary region of the metal wiring have a fixed relative positional relationship on the substrate of the display panel, the position coordinates of any vertex of the boundary line can be derived based on the position coordinates of any marking point and the fixed position relationship between the marking point and any vertex of the boundary line. This allows the second printing valve to be moved directly above the vertex based on these position coordinates.

[0054] Furthermore, the bottom printing area of ​​the protective layer can be determined based on the protective area between the boundary area of ​​the metal wiring on the display panel and the display area, thereby determining the bottom printing path based on the bottom printing area, and further, a thickness printing path can be obtained in which the second printing valve reciprocates along the bottom printing path based on a preset thickness parameter and the printing amount per unit time of the second printing valve (which may be understood as the adhesive discharge amount). Here, the bottom printing area may be the product of the length and width corresponding to the protective area, but preferably, since in the actual process when printing the retaining wall layer, some of the retaining wall already covers the upper surface of the metal wiring (i.e., covers some of the protective area), the bottom printing area may also be the difference between the product of the length and width of the metal wiring corresponding to the protective area and half of the bottom area of ​​the retaining wall layer, and is not limited to this as the retaining wall layer material and the protective layer material are compatible.

[0055] It should be understood that, after the bottom printing area is determined, a bottom printing path corresponding to the bottom surface of the printed protective layer of the second printing valve can be obtained according to the printing rate per unit time of the second printing valve, the area formed by the printing rate in the protective region, and the bottom printing area. Here, as the second printing valve moves along the printing path, it can be controlled so that the printing rate corresponding to each printing position is the same, thereby ensuring uniformity of the thickness of the retaining wall layer.

[0056] Please refer here to the schematic diagram of the printing effect of the protective layer according to the embodiment of the present invention shown in Figure 5. As shown in Figure 5, the printing area of ​​the protective layer is located between the retaining wall layer and the display area, and can be completed by printing using a second printing valve, which is of the piezoelectric injection valve type, but is not limited to this.

[0057] Step 206: Prepare the retaining wall layer material based on a preset protective layer material, control the first printing valve to perform printing based on the wall layer printing parameters and the retaining wall layer material, and control the second printing valve to perform printing based on the protective layer printing parameters and the preset protective layer material. Here, the preset protective layer material and the retaining wall layer material are compatible.

[0058] Specifically, after determining the printing parameters for the retaining wall layer and the protective layer, a corresponding retaining wall material can be prepared based on a pre-set protective layer material to further ensure the shape retention of the retaining wall layer and the protective layer. Here, the retaining wall material is a mixture of a pre-set protective layer material and a thixotropic agent in a predetermined volume ratio. The thixotropy of the retaining wall layer can be increased by mixing in a thixotropic agent. Alternatively, the adhesiveness of the retaining wall layer can be increased by mixing a pre-set protective layer material and a thickener in a predetermined volume ratio, and by mixing in the thickener. Alternatively, the compatibility between the retaining wall layer and the protective layer material can be increased by mixing a pre-set protective layer material and a solvent in a predetermined volume ratio, but the method is not limited to these. Of course, any two of the thixotropic agent, thickener, and solvent described above may be mixed with the pre-set protective layer material, but the method is not limited to this.

[0059] To ensure clarity, the pre-defined protective layer material may, but is not limited to, a low-viscosity UV-curing material or a thin-film material. Furthermore, the pre-defined volume ratio between the protective layer material and the mixture may, but is not limited to, a 9:1 ratio.

[0060] Furthermore, after preparing the retaining wall layer material, the retaining wall layer material can be injected into a syringe corresponding to the first printing valve, and the protective layer material can be injected into a syringe corresponding to the second printing valve. The syringes can also be connected to the corresponding air-operated adhesive dispensers, thereby facilitating the printing process for both the first and second printing valves.

[0061] Furthermore, the first printing valve is controlled to move to the corresponding initial printing position based on the printing parameters of the retaining wall layer, and the printing process continues according to the corresponding printing path until the printing of the retaining wall layer is completed. After the printing of the retaining wall layer is completed, the second printing valve is controlled to move to the corresponding initial printing position based on the printing parameters of the protective layer, and the printing process continues according to the corresponding printing path until the printing of the protective layer is completed.

[0062] Please refer to Figure 6, which shows a schematic diagram illustrating the overall effect of the protective layer according to an embodiment of the present invention. As shown in Figure 6, there is a protective layer between the retaining wall layer and the display area, and the thickness of the protective layer matches the thickness of the retaining wall layer and the thickness of the display area. Furthermore, as can be seen from Figure 4, since the protective layer material and the retaining wall layer material are compatible, the contact portion between the protective layer and the retaining wall layer is already fused, and this fused portion visually becomes closer to the protective layer. In other words, Figure 6 shows a retaining wall layer structure that is half the size of the one in Figure 4.

[0063] It should be noted that, because the protective layer material and the retaining wall layer material are compatible, and the retaining wall layer can more reliably ensure the uniformity of the thickness and regularity of the shape of the protective layer, in the embodiment of the present invention, the protective layer and the retaining wall layer are considered as the entire protective layer, and there is no need to perform treatments such as washing the retaining wall layer.

[0064] Please refer further to Figure 7, which shows another schematic diagram of the overall effect of the protective layer according to an embodiment of the present invention. As shown in Figure 7, the upper half of the schematic diagram is understood to be a schematic diagram of the side effect of the entire protective layer, and the lower half of the schematic diagram is understood to be a schematic diagram of the top effect of the entire protective layer. As can be seen from the two schematic diagrams, the entire protective layer can effectively ensure uniformity of thickness and regularity of shape compared to conventional protective layers.

[0065] To make it clear, the printing method described above in the embodiments of the present invention allows for the efficient and stable printing of metal wiring protective layers with thicknesses of 10 μm to 500 μm. On the one hand, the width of the slope of the metal wiring protective layer can be reduced to 100 μm, thereby reducing the slope width. On the other hand, the shape accuracy can be improved by reducing the shape accuracy of the metal wiring boundary to within ±20 μm and the height uniformity to within ±10 μm. As a result, the frame of the display product can be reduced by 100-500 μm, and the competitiveness of the product can be significantly improved.

[0066] As another alternative to the embodiments of the present invention, before controlling the first printing valve to perform printing based on the printing parameters and material of the retaining wall layer, The steps include controlling a laser sensor to scan the substrate surface of the display panel and obtaining the height of the substrate surface of the display panel, The steps include measuring the current height of the first printing valve and obtaining a target height based on the difference between the current height, the height of the substrate surface, and a preset printing height. The method further includes the step of controlling the first printing valve to move vertically downward based on a target height so that the height between the first printing valve and the substrate surface of the display panel becomes a preset printing height.

[0067] To improve the printing effect of the first print valve, before controlling the first print valve to perform printing based on the printing parameters of the retaining wall layer, the laser rangefinder sensor can be controlled to scan the substrate surface of the display panel to obtain the height of the substrate surface of the display panel. Here, the height of the substrate surface of the display panel can be understood as the distance from the substrate surface of the display panel to the horizontal plane. Next, the current height of the first print valve can be obtained, here, the current height of the first print valve can be understood as the distance from the print head of the first print valve to the horizontal plane. Then, the target height can be obtained by calculating the difference between the current height of the first print valve, the height of the substrate surface of the display panel, and a preset printing height. Here, the preset printing height may be understood as the distance from the dispenser head of the first print valve to the substrate surface of the display panel under ideal conditions.

[0068] Next, after obtaining the target height, the first printing valve may be controlled to move vertically downward so that the height between the first printing valve and the substrate surface of the display panel becomes a preset printing height. The distance moved will be the target height. Of course, before controlling the second printing valve to perform printing based on the printing parameters of the retaining wall layer, the second printing valve may be controlled to move vertically downward so that the height between the second printing valve and the substrate surface of the display panel becomes a preset printing height. The distance moved will be the target height.

[0069] As another alternative to the embodiments of the present invention, before controlling the second print valve to perform printing based on the protective layer printing parameters and preset protective layer material, If it is detected that the pre-set thickness parameter is within the pre-set first thickness range, the type of the second printing valve is determined to be a piezoelectric printing valve. If it is detected that the pre-set thickness parameter is within the pre-set second thickness range, it is determined that the type of the second printing valve is an inkjet printing valve, or If it is detected that a preset thickness parameter is within a preset second thickness range, the system further includes determining that the type of the second print valve is a direct drawing print valve, where the preset first thickness range is smaller than the preset second thickness range.

[0070] To effectively improve printing efficiency and print quality, the type of second printing valve may be determined based on a preset thickness parameter. Specifically, if it is detected that the preset thickness parameter falls within a preset first thickness range, it indicates that the volume corresponding to the protective layer is small, and it can be determined that the type of second printing valve is a piezoelectric printing valve. If it is detected that the preset thickness parameter falls within a preset second thickness range, it indicates that the volume corresponding to the protective layer is large, and it can be determined that the type of second printing valve is an inkjet printing valve or a direct-draw printing valve. This allows for meeting a variety of printing needs.

[0071] In embodiments of the present invention, it should be understood that, in order to further satisfy various printing needs, the type of corresponding second printing valve may be determined based on a preset printing parameter such as a printing speed.

[0072] As another alternative to the embodiments of the present invention, before controlling the first printing valve to perform printing based on the printing parameters and material of the retaining wall layer, To acquire an image of the surface of the display panel's circuit board, If impurities are detected on the substrate surface in the image of the substrate surface, the substrate surface of the display panel may be subjected to solvent wiping treatment, or The method further includes, if impurities are detected on the substrate surface in the image of the substrate surface, blowing them off with an air knife onto the substrate surface of the display panel.

[0073] To avoid the effect of surface impurities on the protective layer's printing, a visual algorithm can be used to identify the impurities on the substrate surface of the display panel. Furthermore, if impurities are detected on the display panel's surface, the substrate surface can be treated with solvent wiping or air knife blowing, but these methods are not limited to these. This removes the surface impurities from the display panel.

[0074] As another alternative example of the embodiment of the present invention, after controlling the first printing valve to perform printing based on the printing parameters and retaining wall material of the retaining wall layer, before controlling the second printing valve to perform printing based on the printing parameters and preset protective layer material of the protective layer, The method further includes performing a hardening treatment on the retaining wall layer on the substrate surface.

[0075] To ensure that the protective layer exhibits a better effect, after the printing process of the retaining wall layer is completed, the retaining wall layer can be cured using a UV lamp or IR lamp to effectively fix its shape.

[0076] As another alternative example of the embodiment of the present invention, after curing the retaining wall layer on the substrate surface, before controlling the second printing valve to perform printing based on the printing parameters of the protective layer and the preset protective layer material, The method further includes performing a surface treatment on the retaining wall layer on the substrate surface.

[0077] To improve the solubility of the retaining wall layer's surface and ensure better compatibility between the retaining wall layer and the protective layer, after completing the printing process for the retaining wall layer, the surface of the retaining wall layer can be treated using a Plasma device to introduce a substrate to its surface.

[0078] Please refer to Figure 8. Figure 8 is a schematic diagram of a printing apparatus for a protective layer for a display device according to an embodiment of the present invention.

[0079] As shown in Figure 8, the printing apparatus for the protective layer of the display device may include at least a first decision module 801, a second decision module 802, and a printing processing module 803.

[0080] The first determination module 801 is used to identify the boundary area of ​​the metal wiring on the display panel and to determine the printing parameters of the retaining wall layer based on the boundary area of ​​the metal wiring and a preset thickness parameter.

[0081] The second determination module 802 is used to determine the protective area between the boundary area of ​​the metal wiring on the display panel and the display area, and the printing parameters of the protective layer based on a preset thickness parameter.

[0082] The printing processing module 803 is used to prepare the retaining wall layer material based on a preset protective layer material, to control the first printing valve to perform printing based on the printing parameters and retaining wall layer material of the retaining wall layer, and to control the second printing valve to perform printing based on the printing parameters and preset protective layer material of the protective layer. Here, the preset protective layer material is compatible with the retaining wall layer material.

[0083] In some possible embodiments, before determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring and a preset thickness parameter, The bottom of the display panel is fixed to a suction cup, and at least two marking points on the substrate surface of the display panel are identified based on the top camera, To determine whether the connecting line formed by any two adjacent marking points is parallel to the calibration line corresponding to the direction of movement of the first printing valve, If it is detected that the connecting wire is not parallel to the calibration wire, the suction cup will be rotated based on the angle between the connecting wire and the calibration wire until the connecting wire is parallel to the calibration wire. If it is detected that the connecting line is parallel to the calibration line, the method further includes determining the position of each marking point in a predetermined spatial orthogonal coordinate system.

[0084] The step of determining the printing parameters of the retaining wall layer based on the boundary area of ​​the metal wiring and a preset thickness parameter is: This includes determining the printing parameters for the retaining wall layer based on the boundary area of ​​the metal wiring, a preset thickness parameter, and the position of each marking point.

[0085] In some possible embodiments, determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring, a preset thickness parameter, and the position of each marking point is possible. The steps include determining the vertex position furthest from the display area in the boundary region of the metal wiring based on the position of each marking point, and setting the vertex position as the initial printing position of the retaining wall layer, The steps include determining the printing path of the retaining wall layer based on the boundary line furthest from the display area in the boundary region of the metal wiring, and a preset thickness parameter, The process includes the step of setting the initial printing position and printing path of the retaining wall layer as the printing parameters of the retaining wall layer.

[0086] In some possible embodiments, the steps include determining the protective area between the boundary region of the metal wiring on the display panel and the display area, and determining the printing parameters of the protective layer based on a preset thickness parameter, Based on the position of each marking point, the vertex position closest to the display area within the protected area is determined, and this vertex position is set as the initial printing position of the protective layer. The bottom surface area of ​​the protective layer is determined based on the length and width of the metal wiring corresponding to the protected area, and the printing path of the protective layer is determined based on the bottom surface area of ​​the protective layer and a preset thickness parameter. This includes defining the initial printing position and printing path of the protective layer as printing parameters for the protective layer.

[0087] In some possible embodiments, preparing the retaining wall layer material based on a predetermined protective layer material is possible. Preparing a retaining wall layer material by mixing a pre-determined protective layer material and a thixotropic agent in a predetermined volume ratio, or This includes preparing a retaining wall layer material by mixing a pre-defined protective layer material and a thickener in a predetermined volume ratio.

[0088] In some possible embodiments, the first printing valve is controlled to perform the printing process based on the printing parameters and material of the retaining wall layer before the printing process is completed. The steps include controlling a laser sensor to scan the substrate surface of the display panel and obtaining the height of the substrate surface of the display panel, The steps include measuring the current height of the first printing valve and obtaining a target height based on the difference between the current height, the height of the substrate surface, and a preset printing height. The method further includes the step of controlling the first printing valve to move vertically downward based on a target height so that the height between the first printing valve and the substrate surface of the display panel becomes a preset printing height.

[0089] In some possible embodiments, the second print valve is controlled to perform the printing process based on the protective layer printing parameters and a preset protective layer material before the printing process is completed. If it is detected that the pre-set thickness parameter is within the pre-set first thickness range, the type of the second printing valve is determined to be a piezoelectric printing valve. If it is detected that the pre-set thickness parameter is within the pre-set second thickness range, it is determined that the type of the second printing valve is an inkjet printing valve, or If it is detected that a preset thickness parameter is within a preset second thickness range, the system further includes determining that the type of the second print valve is a direct drawing print valve, where the preset first thickness range is smaller than the preset second thickness range.

[0090] In some possible embodiments, the first printing valve is controlled to perform the printing process based on the printing parameters and material of the retaining wall layer before the printing process is completed. To acquire an image of the surface of the display panel's circuit board, If impurities are detected on the substrate surface in the image of the substrate surface, the substrate surface of the display panel may be subjected to solvent wiping treatment, or The method further includes, if impurities are detected on the substrate surface in the image of the substrate surface, blowing them off with an air knife onto the substrate surface of the display panel.

[0091] In some possible embodiments, after controlling the first printing valve to perform printing based on the printing parameters and material of the retaining wall layer, and before controlling the second printing valve to perform printing based on the printing parameters and preset protective layer material of the protective layer, The method further includes performing a hardening treatment on the retaining wall layer on the substrate surface.

[0092] In some possible embodiments, after curing the retaining wall layer on the substrate surface, before controlling the second printing valve to perform printing based on the printing parameters of the protective layer and a preset protective layer material,

[0093] The method further includes performing a surface treatment on the retaining wall layer on the substrate surface.

[0094] Those skilled in the art will clearly understand that the technical solutions of embodiments of the present invention can be implemented with the help of software and / or hardware. In this specification, “unit” and “module” refer to software and / or hardware capable of performing a particular function independently or in cooperation with other components. Here, the hardware may be, for example, a field-programmable gate array (FPGA), an integrated circuit (IC), and the like.

[0095] Please refer to Figure 9. Figure 9 is a schematic diagram of another printing apparatus for a protective layer for a display device according to an embodiment of the present invention.

[0096] As shown in Figure 9, the printing apparatus 900 for the protective layer of the display device comprises at least one processor 901, at least one network interface 904, a user interface 903, a memory 905, and at least one communication bus 902.

[0097] The communication bus 902 can be used to connect and communicate with the various components described above.

[0098] Here, the user interface 903 may include buttons, and the selectable user interfaces may further include standard wired interfaces and wireless interfaces.

[0099] The network interface 904 may include, but is not limited to, a Bluetooth module (registered trademark), an NFC module, a Wi-Fi module, and the like.

[0100] The processor 901 may include one or more processing cores. The processor 901 is connected to various parts of the protective layer printing apparatus 900 for the display device using various interfaces and lines, and is used to perform various functions and data processing that route the protective layer printing apparatus 900 for the display device by executing instructions, programs, code sets, or instruction sets stored in memory 905, and by retrieving data stored in memory 905. Optionally, the processor 901 may be implemented in at least one hardware form from among DSP, FPGA, and PLA. The processor 901 may integrate one or more combinations from among a CPU, GPU, modem, etc. Here, the CPU primarily handles the operating system, user interface, and applications, etc. The GPU is used to render and draw content that needs to be displayed on the display. The modem is used to handle wireless communication. As can be understood, the modem may not be integrated into the processor 901 but may be implemented by a separate chip.

[0101] Memory 905 may include RAM (Random Access Memory) or ROM (Read-Only Memory). Optionally, memory 905 may include a non-temporary computer-readable medium. Memory 905 may be used to store instructions, programs, code, code sets, or instruction sets. Memory 905 may include a program storage area that can store instructions for implementing an operating system, instructions for at least one function (e.g., touch function, audio playback function, image playback function, etc.), and instructions for implementing embodiments of the methods described above, and a data storage area that can store data related to embodiments of the methods described above. Memory 905 may optionally be at least one storage device located away from the processor 901. As shown in Figure 9, memory 905, which is a computer storage medium, may include an operating system, a network communication module, a user interface module, and a printing application for a protective layer for a display device.

[0102] Specifically, the processor 901 may be configured to call a printing application for the protective layer of the display device stored in memory 905, and to perform the following operations:

[0103] Identifying the boundary area of ​​the metal wiring on the display panel, and determining the printing parameters of the retaining wall layer based on the boundary area of ​​the metal wiring and a preset thickness parameter. The protective area between the boundary area of ​​the metal wiring on the display panel and the display area, and the printing parameters of the protective layer are determined based on a preset thickness parameter. The process involves preparing the retaining wall layer material based on a preset protective layer material, controlling the first printing valve to perform printing based on the printing parameters and retaining wall layer material of the retaining wall layer, and controlling the second printing valve to perform printing based on the printing parameters and preset protective layer material of the protective layer. Here, the preset protective layer material and the retaining wall layer material are compatible.

[0104] In some possible embodiments, before determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring and a preset thickness parameter, The bottom of the display panel is fixed to a suction cup, and at least two marking points on the substrate surface of the display panel are identified based on the top camera, To determine whether the connecting line formed by any two adjacent marking points is parallel to the calibration line corresponding to the direction of movement of the first printing valve, If it is detected that the connecting wire is not parallel to the calibration wire, the suction cup will be rotated based on the angle between the connecting wire and the calibration wire until the connecting wire is parallel to the calibration wire. If it is detected that the connecting line is parallel to the calibration line, the method further includes determining the position of each marking point in a predetermined spatial orthogonal coordinate system.

[0105] Determining the printing parameters of the retaining wall layer based on the boundary area of ​​the metal wiring and a preset thickness parameter is, This includes determining the printing parameters for the retaining wall layer based on the boundary area of ​​the metal wiring, a preset thickness parameter, and the position of each marking point.

[0106] In some possible embodiments, determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring, a preset thickness parameter, and the position of each marking point is possible. Based on the position of each marking point, the vertex position furthest from the display area in the boundary region of the metal wiring is determined, and this vertex position is set as the initial printing position of the retaining wall layer. The printing path of the retaining wall layer is determined based on the boundary line furthest from the display area in the boundary region of the metal wiring, and a preset thickness parameter. This includes setting the initial printing position and printing path of the retaining wall layer as the printing parameters of the retaining wall layer.

[0107] In some possible embodiments, determining the printing parameters of the protective layer based on the protective area between the boundary area of ​​the metal wiring on the display panel and the display area, and a preset thickness parameter, Based on the position of each marking point, the vertex position closest to the display area within the protected area is determined, and this vertex position is set as the initial printing position of the protective layer. The bottom surface area of ​​the protective layer is determined based on the length and width of the metal wiring corresponding to the protected area, and the printing path of the protective layer is determined based on the bottom surface area of ​​the protective layer and a preset thickness parameter. This includes defining the initial printing position and printing path of the protective layer as printing parameters for the protective layer.

[0108] In some possible embodiments, preparing the retaining wall layer material based on a predetermined protective layer material is possible. Preparing a retaining wall layer material by mixing a pre-determined protective layer material and a thixotropic agent in a predetermined volume ratio, or This includes preparing a retaining wall layer material by mixing a pre-defined protective layer material and a thickener in a predetermined volume ratio.

[0109] In some possible embodiments, the first printing valve is controlled to perform the printing process based on the printing parameters and material of the retaining wall layer before the printing process is completed. The steps include controlling a laser sensor to scan the substrate surface of the display panel and obtaining the height of the substrate surface of the display panel, The steps include measuring the current height of the first printing valve and obtaining a target height based on the difference between the current height, the height of the substrate surface, and a preset printing height. The method further includes the step of controlling the first printing valve to move vertically downward based on a target height so that the height between the first printing valve and the substrate surface of the display panel becomes a preset printing height.

[0110] In some possible embodiments, the second print valve is controlled to perform the printing process based on the protective layer printing parameters and a preset protective layer material before the printing process is completed. If it is detected that the pre-set thickness parameter is within the pre-set first thickness range, the type of the second printing valve is determined to be a piezoelectric printing valve. If it is detected that the pre-set thickness parameter is within the pre-set second thickness range, it is determined that the type of the second printing valve is an inkjet printing valve, or If it is detected that a preset thickness parameter is within a preset second thickness range, the system further includes determining that the type of the second print valve is a direct drawing print valve, where the preset first thickness range is smaller than the preset second thickness range.

[0111] In some possible embodiments, the first printing valve is controlled to perform the printing process based on the printing parameters and material of the retaining wall layer before the printing process is completed. To acquire an image of the surface of the display panel's circuit board, If impurities are detected on the substrate surface in the image of the substrate surface, the substrate surface of the display panel may be subjected to solvent wiping treatment, or The method further includes, if impurities are detected on the substrate surface in the image of the substrate surface, blowing them off with an air knife onto the substrate surface of the display panel.

[0112] In some possible embodiments, after controlling the first printing valve to perform printing based on the printing parameters and material of the retaining wall layer, and before controlling the second printing valve to perform printing based on the printing parameters and preset protective layer material of the protective layer, The method further includes performing a hardening treatment on the retaining wall layer on the substrate surface.

[0113] In some possible embodiments, after curing the retaining wall layer on the substrate surface, before controlling the second printing valve to perform printing based on the printing parameters of the protective layer and a preset protective layer material, The method further includes performing a surface treatment on the retaining wall layer on the substrate surface.

[0114] The present invention further provides a computer-readable storage medium on which a computer program is stored. The above method is realized when the program is executed by a processor. The computer-readable storage medium may include, but is not limited to, any type of disk, such as floppy disks, optical disks, DVDs, DVD-ROMs, microdrives and magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of medium or device suitable for storing instructions and / or data.

[0115] For the sake of simplicity, please note that the embodiments of each method described above are presented as a combination of operations. Those skilled in the art will understand that, according to this application, some steps can be performed in other orders or simultaneously, and therefore the application is not limited by the order of operations described. Furthermore, those skilled in the art will understand that all embodiments described in the specification are preferred embodiments, and the relevant operations and modules are not necessarily required for the present invention.

[0116] In the embodiments described above, each embodiment is given particular emphasis, and for parts not explained in detail in one embodiment, please refer to the relevant descriptions in other embodiments.

[0117] It should be understood that in some embodiments provided by the present invention, the disclosed devices may be implemented in other ways. For example, the embodiments of the devices described above are merely illustrative, and the division of units, for example, is merely a logical division of function, and actual implementation may be carried out in other divisional ways. For example, multiple units or components may be combined or integrated into another system, and some functions may be ignored or not implemented. Furthermore, the coupling, direct coupling or communication connection between illustrated or described components may be via several service interfaces, and the indirect coupling or communication connection between devices or units may be electrical or of other forms.

[0118] Units shown as separate components may or may not be physically separate, and components shown as units may or may not be physical units. That is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected as needed to achieve the objectives of the solution of this embodiment.

[0119] Furthermore, each functional unit in each embodiment of the present invention may be integrated into a single processing unit, each unit may exist physically independently, or two or more units may be integrated into a single unit. The integrated unit may be implemented in hardware form or in the form of a software functional unit.

[0120] The integrated unit may be implemented as a software functional unit and, if sold or used as an independent product, may be stored in computer-readable memory. Based on this understanding, the technical solutions of the present invention may be embodied in the form of a software product, either in part or in essence, in contribution to the prior art. The computer software product may be stored in a single memory and contain multiple instructions used to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods according to each embodiment of the present invention. The memory described above includes various media capable of storing program code, such as U disks, read-only memory (ROM), random access memory (RAM), removable disks, magnetic disks, or optical disks.

[0121] Those skilled in the art will understand that all or part of the steps in the various embodiments described above can be completed by instructing the relevant hardware through a program. This process may be stored in computer-readable memory. The memory may include a USB flash drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0122] The foregoing are merely exemplary embodiments of the present invention and do not limit the scope of the invention. That is, equivalent modifications and alterations made based on the teachings of this disclosure are included within the scope of this disclosure. Those skilled in the art will readily recall embodiments of this disclosure after considering this specification and implementing the disclosures herein. The present invention is intended to cover all variations, uses, or adaptive modifications of this disclosure, including common technical means or customary technical means in the art not described herein, in accordance with the general principles of this disclosure. This specification and its embodiments are exemplary, and the scope and spirit of this disclosure are limited by the claims.

Claims

1. A method for printing a protective layer for a display device, The steps include identifying the boundary region of the metal wiring on the display panel and determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring and a preset thickness parameter, The steps include determining the printing parameters of the protective layer based on the protective area between the boundary area of ​​the metal wiring on the display panel and the display area, and a preset thickness parameter, A method for printing a protective layer for a display device, comprising the steps of: preparing a retaining wall layer material based on a preset protective layer material; controlling a first printing valve to perform printing based on the printing parameters of the retaining wall layer and the retaining wall layer material; and controlling a second printing valve to perform printing based on the printing parameters of the protective layer and the preset protective layer material, wherein the preset protective layer material and the retaining wall layer material are compatible.

2. Before determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring and the preset thickness parameters, The bottom of the display panel is fixed to a suction cup, and at least two marking points on the substrate surface of the display panel are identified based on the top camera, To determine whether the connecting line formed by any two adjacent marking points is parallel to the calibration line corresponding to the direction of movement of the first printing valve, If it is detected that the connecting line is not parallel to the calibration line, the suction cup is rotated based on the angle between the connecting line and the calibration line until the connecting line becomes parallel to the calibration line. If it is detected that the connecting line is parallel to the calibration line, the further includes determining the position of each of the marking points in a predetermined spatial orthogonal coordinate system. Determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring and a preset thickness parameter is: The method according to claim 1, characterized in that it includes determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring, a preset thickness parameter, and the position of each of the marking points.

3. Determining the printing parameters of the retaining wall layer based on the boundary region of the metal wiring, a preset thickness parameter, and the position of each marking point is: Based on the position of each of the marking points, the vertex position furthest from the display area in the boundary region of the metal wiring is determined, and this vertex position is set as the initial printing position of the retaining wall layer. The printing path of the retaining wall layer is determined based on the boundary line furthest from the display area in the boundary region of the metal wiring, and a preset thickness parameter. The method according to claim 2, characterized in that the initial printing position of the retaining wall layer and the printing path of the retaining wall layer are defined as the printing parameters of the retaining wall layer.

4. The step of determining the printing parameters of the protective layer based on the protective area between the boundary area of ​​the metal wiring on the display panel and the display area, and the preset thickness parameter, is: Based on the position of each of the aforementioned marking points, the vertex position closest to the display area in the protected area is determined, and the aforementioned vertex position is set as the initial printing position of the protective layer. The bottom surface area of ​​the protective layer is determined based on the length and width of the metal wiring corresponding to the protective area, and the printing path of the protective layer is determined based on the bottom surface area of ​​the protective layer and the preset thickness parameter. The method according to the second invention, characterized in that the initial printing position of the protective layer and the printing path of the protective layer are defined as printing parameters of the protective layer.

5. Preparing the retaining wall layer material based on the aforementioned pre-set protective layer material is Preparing a retaining wall layer material by mixing a pre-determined protective layer material and a thixotropic agent in a predetermined volume ratio, or The method according to claim 1, characterized in that it includes mixing the aforementioned pre-set protective layer material and a thickening agent in the predetermined volume ratio to prepare a retaining wall layer material.

6. Before controlling the first printing valve to perform printing based on the printing parameters and material of the retaining wall layer, The steps include controlling a laser sensor to scan the substrate surface of the display panel and obtaining the height of the substrate surface of the display panel, The steps include measuring the current height of the first printing valve and obtaining a target height based on the difference between the current height, the height of the substrate surface, and a preset printing height. The method according to the 2nd method, further comprising the step of controlling the first printing valve to move vertically downward based on the target height such that the height between the first printing valve and the substrate surface of the display panel becomes the preset printing height.

7. Before controlling the second printing valve to perform printing based on the printing parameters of the protective layer and the preset protective layer material, If it is detected that the aforementioned preset thickness parameter is within a preset first thickness range, the type of the second printing valve is determined to be a piezoelectric printing valve. If it is detected that the aforementioned preset thickness parameter is within a preset second thickness range, it is determined that the type of the second printing valve is an inkjet printing valve, or The method according to claim 1, further comprising determining that the type of the second printing valve is a direct drawing printing valve when it is detected that the preset thickness parameter is within the preset second thickness range, wherein the preset first thickness range is smaller than the preset second thickness range.

8. Before controlling the first printing valve to perform printing based on the printing parameters and material of the retaining wall layer, To acquire an image of the substrate surface of the display panel, If impurities are detected on the substrate surface in the image of the substrate surface, a solvent wiping treatment may be performed on the substrate surface of the display panel, or The method according to claim 6, further comprising blowing off impurities with an air knife onto the substrate surface of the display panel when impurities are detected on the substrate surface in the image of the substrate surface.

9. After controlling the first printing valve to perform printing based on the printing parameters and material of the retaining wall layer, and before controlling the second printing valve to perform printing based on the printing parameters and material of the protective layer, The method according to claim 1, further comprising performing a hardening treatment on the retaining wall layer on the surface of the substrate.

10. A printing apparatus for a protective layer for a display device, A first determination module used to identify the boundary region of metal wiring on a display panel and to determine the printing parameters of the retaining wall layer based on the boundary region of the metal wiring and a preset thickness parameter, A protective area between the boundary area of ​​the metal wiring on the display panel and the display area, and a second determination module used to determine the printing parameters of the protective layer based on the preset thickness parameter, A printing apparatus for a protective layer for a display device, comprising: a printing processing module used to prepare a retaining wall layer material based on a preset protective layer material; a first printing valve to perform printing processing based on the printing parameters of the retaining wall layer and the retaining wall layer material; and a second printing valve to perform printing processing based on the printing parameters of the protective layer and the preset protective layer material, wherein the preset protective layer material is compatible with the retaining wall layer material.

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