Coating jig

Abstract

The present application discloses a coating jig. The coating jig includes a first jig, a second jig, and a positioning member. The first jig has a first opening; the second jig and the first jig are assembled to form a receiving cavity; and the positioning member is disposed on the side of the first jig facing the second jig. The positioning member has a second opening, and the orthographic projection of the second opening on the first jig at least partially overlaps with the orthographic projection of the first opening on the first jig. The positioning member of the present application can block the flow of electrostatic liquid, improve the coating accuracy of the electrostatic liquid, thereby reducing the number of times the electrostatic liquid is coated, shortening the process time, and improving equipment utilization.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and in particular relates to a coating jig. Background Art

[0002] Organic Light Emitting Diode (OLED), as a current-type light-emitting device, is widely used in display devices such as mobile phones and tablet computers due to its various characteristics such as self-luminescence, fast response, wide viewing angle and ability to be manufactured on flexible substrates.

[0003] During the manufacturing process of display modules, coating jigs are required. For example, OLED display panels have complex circuits and are relatively thin, making them sensitive to electrical charge. When charge accumulates on the display panel, it can easily cause issues such as green tinting or uneven brightness. Therefore, an electrostatic liquid is coated on the copper foil of the display module to conduct static electricity. Since the electrostatic liquid takes time to solidify and is in liquid form, it is fluid and easily flows to areas that do not need coating. This results in low coating accuracy and reduces production efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a coating jig to solve the problem of low coating accuracy of display modules.

[0005] In a first aspect, the present application provides a coating jig, comprising a first jig, a second jig, and a positioning member, wherein the first jig is provided with a first opening; the second jig and the first jig are assembled together to form a receiving cavity; the positioning member is arranged on a side of the first jig facing the second jig, the positioning member having a second opening, the orthographic projection of the second opening on the first jig at least partially overlapping with the orthographic projection of the first opening on the first jig.

[0006] Compared with the prior art, the coating jig provided in the embodiment of the present application is capable of placing the display module in the accommodating cavity formed between the first jig and the second jig. The first opening on the first jig and the second opening on the positioning member are arranged to facilitate the nozzle spraying of the electrostatic liquid. Moreover, the positioning member can be fitted with the display module to shield the area that does not need to be coated with the electrostatic liquid, and the area that needs to be coated with the electrostatic liquid is exposed through the second opening. Therefore, the positioning member can block the flow of the electrostatic liquid, thereby improving the coating accuracy of the electrostatic liquid, thereby reducing the number of times the electrostatic liquid is coated, shortening the process time, and improving equipment utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0008] Figure 1 A schematic diagram of the structure of a coating jig provided in an embodiment of the present application;

[0009] Figure 2 A schematic diagram of the assembly of the first fixture and the positioning member provided in an embodiment of the present application;

[0010] Figure 3 A schematic diagram of a display module provided in an embodiment of the present application;

[0011] Figure 4 A schematic structural diagram of a second fixture provided in an embodiment of the present application;

[0012] Figure 5 A schematic structural diagram of a positioning member provided in an embodiment of the present application;

[0013] Figure 6 Another structural schematic diagram of a positioning member provided in an embodiment of the present application;

[0014] Figure 7 A schematic structural diagram of a first fixture provided in an embodiment of the present application;

[0015] Figure 8 This is a schematic diagram of the assembly of the first fixture and the positioning member provided in an embodiment of the present application.

[0016] The accompanying figures are as follows:

[0017] Coating jig 100; accommodating chamber 100a; first jig 10; first opening 10a; second adsorption hole 10b; cover plate 11; side wall 12; inner wall surface 121; outer wall surface 122; protrusion 13; raised portion 14; flat portion 15; second jig 20; positioning groove 21; accommodating groove 22; arc-shaped portion 23; first adsorption hole 24; positioning member 30; second opening 30a; curved inclined surface 30b; sub-opening 30c; first surface 31; second surface 32; third surface 33; positioning portion 34; barrier portion 35; display module 200; display panel 210; glass cover plate 220; side surface 211; back surface 212; electrostatic release layer 230; first direction X; second direction Y; third direction Z. DETAILED DESCRIPTION

[0018] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present application, but are not intended to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0019] In the description of this application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0020] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0021] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0022] It should be noted that the coating jig of the embodiment of the present application is particularly suitable as a coating jig for electrostatic fluid of display modules, but is not limited to being a coating jig for electrostatic fluid of display modules. If other equipment uses the coating jig provided by this application, it should also fall within the scope of protection of this application.

[0023] Figure 1 A schematic diagram of the structure of a coating jig provided in an embodiment of the present application; Figure 2 This is a schematic diagram of the assembly of the first fixture and the positioning member provided in an embodiment of the present application.

[0024] Please refer to Figure 1 and Figure 2 The coating jig 100 includes a first jig 10, a second jig 20, and a positioning member 30. The first jig 10 has a first opening 10a; the second jig 20 and the first jig 10 are assembled together to form a receiving cavity 100a; the positioning member 30 is disposed on the side of the first jig 10 facing the second jig 20, and has a second opening 30a. The orthographic projection of the second opening 30a on the first jig 10 at least partially overlaps with the orthographic projection of the first opening 10a on the first jig 10.

[0025] Figure 3 A schematic diagram of a display module provided in an embodiment of the present application.

[0026] like Figure 3 As shown, the display module 200 includes a display panel 210 and a glass cover plate 220 disposed on one side of the display panel 210. Copper foil is provided on the side 211 and back 212 of the display panel 210. An electrostatic liquid is applied to the copper foil, and after the electrostatic liquid solidifies, an electrostatic release layer 230 is formed. Static electricity accumulated at the edge of the glass cover plate 220 can be conducted to the electrostatic release layer 230 to achieve static discharge. It should be noted that the back 212 of the display panel 210 refers to the side of the display panel 210 facing away from the glass cover plate 220, and the side 211 of the display panel 210 refers to the side connecting the front and back 212 of the display panel 210.

[0027] The location and number of the first openings 10a can be set as needed. For example, the first openings 10a can be set on the side edges of the first jig 10 to correspond to the side surfaces 211 of the display module 200, allowing the electrostatic liquid to flow to the edges of the back surface 212 and the side surfaces 211 of the display module 200. First openings 10a can also be set on opposite sides of the first jig 10 along a first direction X, where the first direction X is the width of the display module 200. One of the first openings 10a corresponds to the left side surface 211 of the display module 200, and the other first opening 10a corresponds to the right side surface 211 of the display module 200, allowing the electrostatic liquid to be applied to both side surfaces 211 of the display module 200 simultaneously.

[0028] Furthermore, the second direction Y is the length of the display module 200, and the first direction X and the second direction Y are perpendicular to each other. The width of the first opening 10a along the first direction X can also be adjusted as needed. For example, for a curved screen with a curved side 211, the width of the first opening 10a along the first direction X can cover the side edges of the curved side 211 and the back 212 of the display panel 210. That is, the orthographic projection of the first opening 10a on the coating jig 100 overlaps with the orthographic projection of the side edges of the curved side 211 and back 212 of the display panel 210, enabling electrostatic liquid to be applied simultaneously to the side edges of the side 211 and back 212 of the display panel 210. The length of the first opening 10a along the second direction Y can also be adjusted as needed. For example, the length of the first opening 10a along the second direction Y can be set to coincide with the length of the display module 200 along the second direction Y, so that the entire side edges of the side 211 and back 212 of the display module 200 are coated with electrostatic liquid.

[0029] For example, the orthographic projection of the first opening 10a on the first jig 10 and the orthographic projection of the second opening 30a on the first jig 10 can completely overlap, that is, the length and width of the first opening 10a and the second opening 30a are the same and completely correspond to each other. The orthographic projection of the first opening 10a on the first jig 10 and the orthographic projection of the second opening 30a on the first jig 10 can also partially overlap, for example, the length or width of the first opening 10a and the second opening 30a are different, or the first opening 10a and the second opening 30a are staggered.

[0030] When applying electrostatic liquid to the display module 200, the display module 200 is placed in the receiving cavity 100a of the coating jig 100, with the back surface 212 of the display module 200 facing the first jig 10. The electrostatic liquid can be added to the first opening 10a. The electrostatic liquid flows from the first opening 10a through the second opening 30a on the positioning member 30 to the back surface 212 and / or side surface 211 of the display panel 210, and the electrostatic liquid is cured to form the electrostatic release layer 230. The positioning member 30 can be mounted on the first jig 10. When the first jig 10 is placed on the second jig 20, the positioning member 30 can be attached to the display module 200, allowing the electrostatic liquid to flow only to the portion of the display module 200 corresponding to the second opening 30a, preventing the electrostatic liquid from flowing to other parts of the display module 200.

[0031] In summary, the embodiment of the present application places the display module 200 in the accommodating cavity 100a formed between the first fixture 10 and the second fixture 20. The first opening 10a on the first fixture 10 and the second opening 30a on the positioning member 30 are provided to facilitate the nozzle to spray the electrostatic liquid. Moreover, the positioning member 30 can fit with the display module 200, shielding the area that does not need to be coated with the electrostatic liquid, and exposing the area that needs to be coated with the electrostatic liquid through the second opening 30a. Therefore, the positioning member 30 can block the flow of the electrostatic liquid, thereby improving the coating accuracy of the electrostatic liquid, thereby reducing the number of times the electrostatic liquid is coated, shortening the process time, and improving equipment utilization.

[0032] Figure 4 A schematic structural diagram of the second fixture provided in an embodiment of the present application.

[0033] like Figure 4 As shown, in some embodiments, the second jig 20 defines a positioning groove 21 recessed away from the first jig 10. The positioning groove 21 is located within the accommodating cavity 100a. Specifically, the second jig 20 is recessed along a third direction Z, which is the thickness direction of the display module 200 and is perpendicular to both the first direction X and the second direction Y. Due to the provision of the positioning groove 21, the display module 200 can be directly placed within the positioning groove 21 to position it, preventing it from moving during the coating process and further improving the coating accuracy of the display module 200.

[0034] Optionally, the size of the positioning groove 21 matches the size of the display module 200 to exactly accommodate the display module 200. Alternatively, the size of the positioning groove 21 can be larger than the size of the display module 200 to be compatible with display modules 200 of different sizes, thereby increasing the applicability of the coating jig 100.

[0035] A receiving groove 22 may be further provided around the positioning groove 21. The depth of the receiving groove 22 along the third direction Z may be less than the depth of the positioning groove 21 along the third direction Z. The receiving groove 22 may be used to accommodate electrical components such as an FPC (Flexible Printed Circuit) on the back surface 212 of the display panel 210 to protect the electrical components of the display panel 210.

[0036] In other embodiments, the second fixture 20 may not be provided with the positioning groove 21 , and positioning blocks may be provided on the second fixture 20 , and multiple positioning blocks may be arranged around the circumference of the display module 200 to achieve positioning of the display module 200 .

[0037] In some embodiments, the second fixture 20 is provided with arc-shaped portions 23 on two opposite sides of the positioning groove 21 , respectively. The arc-shaped portions 23 are recessed in a direction away from the accommodating cavity 100 a .

[0038] For a curved screen, the two side surfaces 211 of the display module 200 that are oppositely arranged along the second direction Y are curved, and the second jig 20 is provided with curved portions 23 on opposite sides along the first direction X. The degree of curvature of the curved portions 23 matches the curved side surfaces 211 of the display module 200, so that the side surfaces 211 of the display module 200 fit exactly with the curved portions 23, which can improve the stability of the display module 200 and further prevent the display module 200 from shifting during the coating process.

[0039] Figure 5 A schematic structural diagram of a positioning member provided in an embodiment of the present application.

[0040] like Figure 5 As shown, in some embodiments, at least a portion of the side of the positioning member 30 facing the second fixture 20 is formed with a curved inclined surface 30 b , and the curvature of the curved inclined surface 30 b matches the curvature of the arc-shaped portion 23 .

[0041] Illustratively, the positioning member 30 includes a first surface 31, a second surface 32, and a third surface 33, which are connected end to end. The first surface 31 is the side of the positioning member 30 facing away from the second fixture 20, and the third surface 33 is the side of the positioning member 30 facing the second fixture 20, i.e., the curved inclined surface 30b. The third surface 33 is an arc-shaped surface that convexly extends toward the second fixture 20, and the second surface 32 connects the first surface 31 and the third surface 33.

[0042] Since the curvature of the arc-shaped portion 23 matches the curvature of the display module 200, the curvature of the curved inclined surface 30b of the positioning member 30 also matches the curvature of the display module 200. When the first jig 10 is covered on the second jig 20, the positioning member 30 can fit with the curved side 211 of the display module 200, avoiding a gap between the positioning member 30 and the side 211 of the display module 200, thereby preventing the electrostatic liquid from flowing to an area where the electrostatic liquid does not need to be applied.

[0043] In some embodiments, the bottom of the positioning groove 21 is provided with a plurality of first adsorption holes 24 arranged at intervals. A vacuum is applied to the first adsorption holes 24 using a vacuum device, thereby firmly securing the display module 200 to the second fixture 20. After the coating process is completed, the vacuum device is removed, and the air pressure within the first adsorption holes 24 is balanced with the external air pressure. The display module 200 can then be removed and the next display module 200 can be coated, thereby improving production efficiency.

[0044] Optionally, a plurality of evenly spaced first adsorption holes 24 may be provided along the entire bottom surface of the positioning groove 21. Alternatively, a plurality of first adsorption holes 24 may be provided along both ends of the second fixture 20 along the second direction Y, with the plurality of first adsorption holes 24 spaced apart along the first direction X. For example, two rows of first adsorption holes 24 may be provided on one side of the second fixture 20 along the second direction Y, i.e., the upper side, and two rows of first adsorption holes 24 may be provided on the other side of the second fixture 20 along the second direction Y, i.e., the lower side. The vacuum adsorption of the first adsorption holes 24 secures the display module 200 to the second fixture 20. Of course, in other embodiments, a plurality of first adsorption holes 24 may be provided along both ends of the second fixture 20 along the first direction X, with the plurality of first adsorption holes 24 spaced apart along the second direction Y. For example, two rows of first adsorption holes 24 may be provided on one side of the second fixture 20 along the first direction X, i.e., the left side, and two rows of first adsorption holes 24 may be provided on the other side of the second fixture 20 along the first direction X, i.e., the right side.

[0045] Figure 6 Another structural schematic diagram of the positioning member provided in an embodiment of the present application.

[0046] like Figure 6 As shown, in some embodiments, the positioning member 30 includes a positioning portion 34 and a barrier portion 35, the positioning portion 34 is arranged on the side of the first fixture 10 facing the second fixture 20, the second opening 30a is opened on the positioning portion 34, and the barrier portion 35 is arranged on the positioning portion 34, and separates the second opening 30a into at least two sub-openings 30c.

[0047] The barrier portion 35 is located in the second opening 30a, and its two ends are connected to the positioning portion 34. For example, the positioning member 30 is provided with a barrier portion 35 in the first opening 10a, which divides the first opening 10a into two sub-openings 30c along the second direction Y. The side of the barrier portion 35 facing the second fixture 20 is capable of being attached to the display module 200. The electrostatic liquid flows from the sub-openings 30c to the corresponding parts of the display module 200. The barrier portion 35 prevents the electrostatic liquid from flowing from one sub-opening 30c to the other, thereby precisely controlling the application area of ​​the electrostatic liquid.

[0048] Optionally, the positioning portion 34 and the barrier portion 35 each have a convex curved surface on the side facing the second jig 20, and the curvature thereof matches the curvature of the side surface 211 of the display module 200. This allows the positioning portion 34 and the barrier portion 35 to respectively mate with the curved side surface 211 of the display module 200 when the first jig 10 is placed over the second jig 20, thereby avoiding a gap between the positioning member 30 and the side surface 211 of the display module 200 and preventing the electrostatic liquid from flowing to areas where it is not required.

[0049] Furthermore, the side of the barrier portion 35 facing the second jig 20 has a serrated shape. Because the display panel 210 is composed of multiple stacked film layers, after the side 211 of the curved display module 200 is bent, the various film layers will have step differences on the side 211 of the display module 200, resulting in a serrated shape on the side 211 of the display panel 210 after bending. Therefore, in this embodiment, the side of the barrier portion 35 facing the second jig 20 is configured as a serrated shape to better align with the side of the curved display module 200, preventing a gap between the barrier portion and the display module 200, which could allow electrostatic liquid to flow between the film layers of the display panel 210.

[0050] Of course, the side of the positioning portion 34 facing the second fixture 20 can also be set to be serrated, so that the positioning portion 34 can also better fit with the side of the curved screen display module 200, preventing a gap between the positioning portion 34 and the display module 200, and preventing the electrostatic liquid from flowing between the film layers of the display panel 210, thereby further improving the performance of the display module 200 and the product yield.

[0051] In some embodiments, the positioning member 30 is detachably connected to the first jig 10, which facilitates the removal of the positioning member 30 from the first jig 10, and the positioning member 30 matching the display module 200 can be replaced according to the size of the display module 200, thereby improving the compatibility of the coating jig 100.

[0052] Optionally, the positioning member 30 can be fixed to the first fixture 10 by means of snaps, screws, magnetism or vacuum adsorption, all of which can achieve a detachable connection between the positioning member 30 and the first fixture 10.

[0053] Figure 7 A schematic structural diagram of the first fixture provided in an embodiment of the present application.

[0054] like Figure 7 As shown, in some embodiments, the first jig 10 has a plurality of second adsorption holes 10b spaced apart along the circumference of the first opening 10a. By applying a vacuum to the second adsorption holes 10b using a vacuum device, the positioning member 30 can be securely fixed to the first jig 10. For display modules 200 of different sizes, after the coating process for the previous display module 200 is completed, the vacuum device is removed, and the air pressure within the second adsorption holes 10b is balanced with the external air pressure. The positioning member 30 can then be removed and coating can proceed to the next display module 200, thereby improving production efficiency.

[0055] Optionally, at least two circles of second adsorption holes 10b may be provided along the circumference of the first opening 10a to increase the connection strength between the positioning member 30 and the first fixture 10. Alternatively, the number of second adsorption holes 10b may be increased at both ends of the first opening 10a along the first direction X to further enhance the stability of the positioning member 30.

[0056] Figure 7 A schematic structural diagram of a first fixture provided in an embodiment of the present application; Figure 8 This is a schematic diagram of the assembly of the first fixture and the positioning member provided in an embodiment of the present application.

[0057] Please refer to Figure 7 and Figure 8 In some embodiments, the first jig 10 includes a cover plate 11 and sidewalls 12 disposed on opposite sides of the cover plate 11. The cover plate 11 is disposed on the second jig 20, and the sidewalls 12 abut against the side surfaces 211 of the second jig 20. The sidewalls 12 include an inner wall surface 121 facing the accommodating cavity 100a and an outer wall surface 122 facing away from the accommodating cavity 100a. The inner wall surface 121 of the sidewall 12 abuts against the outer side of the second jig 20 to enhance the sealing performance of the coating jig 100.

[0058] Optionally, side walls 12 are provided on opposite sides of the first jig 10 along the first direction X, and the side walls 12 extend along the second direction Y to provide sealing in the longitudinal direction of the display module 200. Alternatively, side walls 12 are provided on opposite sides of the first jig 10 along the first direction X and opposite sides of the second direction Y to further ensure the sealing performance of the coating jig 100 in all directions.

[0059] The first fixture 10 further includes a protrusion 13 provided on the side of the side wall 12 facing the accommodating cavity 100a. The protrusion 13 abuts against the positioning member 30 on the side facing the accommodating cavity 100a and abuts against the second fixture 20 on the side facing the second fixture 20.

[0060] The thickness of the protrusion 13 along the third direction Z is less than the thickness of the side wall 12 along the third direction Z. The side of the protrusion 13 abuts against the positioning member 30. When the cover plate 11 is placed on the second jig 20, the lower side of the protrusion 13 abuts against the upper side of the second jig 20. The provision of the protrusion 13 can ensure a tighter fit between the first jig 10 and the second jig 20, further improving the sealing performance of the coating jig 100.

[0061] Optionally, the protrusion 13 extends along the first direction X, and the length thereof may be consistent with the length of the side wall 12 , or slightly shorter than the length of the side wall 12 .

[0062] In some embodiments, the cover plate 11 is protruded in a direction away from the second fixture 20 to form a raised portion 14 .

[0063] Exemplarily, the cover plate 11 includes a raised portion 14 and flat portions 15 disposed on opposite sides of the raised portion 14 along the second direction Y. The first opening 10a is formed in the flat portion 15 near the raised portion 14, and the sidewall 12 is connected to the flat portion 15. Because the raised portion 14 protrudes away from the second jig 20, a certain amount of accommodation space is provided between the raised portion 14 and the second jig 20. This accommodation space can be used to make room for electrical components on the back surface 212 of the display panel 210, preventing the first jig 10 from contacting these electrical components and protecting the integrity of the display panel 210.

[0064] Optionally, the orthographic projection of the raised portion 14 on the second jig 20 is located at the orthographic projection of the positioning groove 21 on the second jig 20, and the projection area of ​​the positioning groove 21 may be slightly larger than the projection area of ​​the raised portion 14, so that the raised portion 14 can make way for the electrical components on the back side 212 of the display panel 210, and the first opening 10a can be aligned with the side edges of the side 211 and the back side 212 of the display panel 210.

[0065] In other embodiments, the flat plate portion 15 may also be disposed around the circumference of the raised portion 14 , and the flat plate portion 15 abuts against the second fixture 20 to achieve sealing between the first fixture 10 and the second fixture 20 .

[0066] In some embodiments, the positioning member 30 is an elastic member. Specifically, the positioning member 30 can be an elastic component such as rubber or plastic. When the first jig 10 is placed on the second jig 20, the positioning member 30 contacts the display module 200 and can be compressed and deformed, thereby achieving a closer contact between the positioning member 30 and the display module 200, preventing the electrostatic liquid from flowing into areas of the display panel 210 that do not require coating. Furthermore, if the size of the display module 200 changes, the same positioning member 30 can be used. Since the positioning member 30 can undergo elastic compression and deformation, the positioning member 30 can also be in close contact with display modules 200 of different sizes, eliminating the need to replace the positioning member 30 and reducing costs.

[0067] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A coating jig, characterized in that: include: a first fixture having a first opening; A second fixture, assembled with the first fixture to form a receiving cavity; A positioning member is provided on a side of the first jig facing the second jig, the positioning member having a second opening, the orthographic projection of the second opening on the first jig at least partially overlapping with the orthographic projection of the first opening on the first jig; the positioning member includes a positioning portion and a barrier portion, the positioning portion is provided on a side of the first jig facing the second jig, the second opening is provided on the positioning portion, the barrier portion is provided on the positioning portion and separates the second opening into at least two sub-openings; the barrier portion is serrated on the side facing the second jig.

2. The coating jig according to claim 1, characterized in that: The second jig is provided with a positioning groove recessed in a direction away from the first jig, and the positioning groove is located in the accommodating cavity.

3. The coating jig according to claim 2, characterized in that: The second fixture is provided with arc-shaped portions on opposite sides of the positioning groove, respectively, and the arc-shaped portions are recessed in a direction away from the accommodating cavity.

4. The coating jig according to claim 3, characterized in that: At least a portion of a side of the positioning member facing the second fixture is formed with a curved inclined surface, and a curvature of the curved inclined surface matches a curvature of the arc-shaped portion.

5. The coating jig according to claim 2, characterized in that: A plurality of first adsorption holes arranged at intervals are formed at the bottom of the positioning groove.

6. The coating jig according to any one of claims 1 to 5, characterized in that: The positioning member is detachably connected to the first fixture.

7. The coating jig according to claim 6, characterized in that: The first fixture is provided with a plurality of second adsorption holes arranged at intervals along the circumference of the first opening.

8. The coating jig according to any one of claims 1 to 5, characterized in that: The first jig includes a cover plate and side walls respectively provided on opposite sides of the cover plate, the cover plate is provided on the second jig, and the side walls abut against the side surfaces of the second jig; The first fixture further includes a protrusion provided on a side of the sidewall facing the accommodating cavity, the protrusion abuts against the positioning member on the side facing the accommodating cavity, and the protrusion abuts against the second fixture on the side facing the second fixture.

9. The coating jig according to claim 8, characterized in that: The cover plate protrudes in a direction away from the second fixture to form a raised portion; The positioning member is an elastic member.

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