Film attaching mold, molded combination film, and film attaching method

Abstract

The application provides a film pasting mold, a formed combined film and a film pasting method. The film pasting mold is used for pasting a special-shaped film body and a to-be-pasted part. The special-shaped film body has a special-shaped edge. The film pasting mold comprises a bearing seat. The bearing seat has a bearing part. The bearing part is used for supporting the to-be-pasted part and the special-shaped film body. An auxiliary supporting structure is arranged on the bearing seat. The length of the auxiliary supporting structure along a second direction is equal to the sum of the length of the special-shaped film body along the second direction at different positions along a first direction. The first direction and the second direction are perpendicular to each other. The upper surface of the auxiliary supporting structure is flush with the upper surface of the to-be-pasted part or consistent with the upper surface of the special-shaped film body after the special-shaped film body is pasted with the to-be-pasted part. The auxiliary supporting structure makes the pressure of each part of the special-shaped film body received by the roller pressing part more consistent. Therefore, the film pasting mold, the formed combined film and the film pasting method provided by the application can be used for guaranteeing the pasting effect between the special-shaped film body and the to-be-pasted part.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a film-applying mold, a molded composite film, and a film-applying method. Background Technology

[0002] Organic light-emitting diode (OLED) display panels are increasingly widely used due to their advantages such as light weight, self-illumination, wide viewing angle, low driving signal, high luminous efficiency, low power consumption, and fast response speed.

[0003] In related technologies, irregularly shaped display modules may include stacked display panels and cover plates, which can be bonded together using optically transparent adhesive. During the bonding process between the cover plate and the display panel, a roller is pressed onto the side of the cover plate away from the display panel. The roller applies pressure to the cover plate during rolling to ensure that the display panel and the cover plate are stably attached and bonded together.

[0004] However, the bonding effect between the aforementioned display panel and cover plate is not good. Summary of the Invention

[0005] In view of at least one of the above-mentioned technical problems, embodiments of this application provide a film-applying mold, a molded composite film, and a film-applying method, which can be used to ensure the bonding effect between the irregularly shaped film and the part to be applied.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] A first aspect of this application provides a film-applying mold for applying an irregularly shaped film to a component to be applied. The irregularly shaped film has irregularly shaped edges. The film-applying mold includes a support base with a support portion for supporting the component to be applied and the irregularly shaped film. An auxiliary support structure is provided on the support base. At different positions along a first direction, the length of the auxiliary support structure along a second direction is equal to the sum of the lengths of the irregularly shaped film along the second direction. The first and second directions are perpendicular to each other. The upper surface of the auxiliary support structure is flush with the upper surface of the component to be applied or coincides with the upper surface of the irregularly shaped film after it has been applied to the component.

[0008] The film-applying mold provided in this application embodiment is used to bond an irregularly shaped film to a workpiece. The irregularly shaped film has irregular edges. The film-applying mold includes a support base with a support portion for supporting the workpiece and the irregularly shaped film. An auxiliary support structure is provided on the support base. At different positions along a first direction, the length of the auxiliary support structure along a second direction is equal to the sum of the lengths of the irregularly shaped film along the second direction, and the first and second directions are perpendicular to each other. The upper surface of the auxiliary support structure is flush with the upper surface of the workpiece or consistent with the upper surface of the irregularly shaped film after bonding. The auxiliary support structure ensures that the pressure from the rollers is more consistent across different parts of the irregularly shaped film, thereby reducing or avoiding adhesive overflow, air bubbles, etc., during the bonding process between the irregularly shaped film and the workpiece, resulting in a better bonding effect.

[0009] In one possible implementation, the support has a reference plane and a groove corresponding to the reference plane. A support portion is formed at the bottom of the groove. The depth of the groove corresponding to the support portion is equal to the thickness of the part to be bonded. The upper surface of the auxiliary support structure is flush with the reference plane or consistent with the upper surface of the irregularly shaped membrane to which the irregularly shaped membrane is bonded to the part to be bonded.

[0010] In this way, the groove has a limiting effect on the part to be fitted.

[0011] In one possible implementation, the auxiliary support structure has irregularly shaped mating edges that are adapted to the shape of the irregularly shaped edges and are arranged opposite to each other.

[0012] This ensures that the pressure exerted on different parts of the irregularly shaped membrane by the rollers is more consistent.

[0013] In one possible implementation, both the irregular mating edge and the irregular edge are curved edges, and the curvature of the irregular mating edge and the irregular edge are equal.

[0014] In one possible implementation, the distance between the irregularly shaped membrane and the auxiliary support structure ranges from 0.02 mm to 0.5 mm.

[0015] In one possible implementation, a roller is included, which is pressed onto the side of the auxiliary support structure and the irregularly shaped membrane away from the support seat.

[0016] In this way, the roller can apply pressure to the irregularly shaped film to make the irregularly shaped film fit tightly with the part to be bonded.

[0017] In one possible implementation, the roller is cylindrical, and the axial direction of the roller is a second direction.

[0018] This ensures that the pressure exerted on the irregularly shaped film by the rollers is more consistent during the rolling process.

[0019] A second aspect of this application provides a molded composite membrane, including a shaped membrane body, an auxiliary pressure-bearing portion, and a protective membrane layer. The shaped membrane body and the auxiliary pressure-bearing portion are both located on the same side of the protective membrane layer and are connected by the protective membrane layer. The shaped membrane body has shaped edges, and the auxiliary pressure-bearing portion is disposed opposite to the shaped edges. At different positions along a first direction, the sum of the length of the shaped membrane body along a second direction and the length of the auxiliary pressure-bearing portion along a second direction is equal. The first direction and the second direction are perpendicular to each other.

[0020] The molding composite film provided in this application embodiment has an auxiliary pressure bearing part that makes the pressure of the roller pressing part on each part of the irregular film body more consistent, thereby reducing or avoiding the occurrence of glue overflow, air bubbles, etc. during the bonding process between the irregular film body and the part to be bonded, and the bonding effect between the irregular film body and the part to be bonded is better.

[0021] In one possible implementation, the thickness of the auxiliary pressure-bearing portion is equal to the thickness of the irregularly shaped membrane.

[0022] This ensures that the pressure exerted on different parts of the irregularly shaped membrane by the rollers is more consistent.

[0023] A third aspect of this application embodiment provides a film application method, comprising:

[0024] The system provides an irregularly shaped film, a part to be bonded, and a film-bonding mold. Both the irregularly shaped film and the part to be bonded are located on the support portion of the support seat of the film-bonding mold. At different positions along the first direction, the length of the auxiliary support structure of the film-bonding mold along the second direction is equal to the sum of the lengths of the irregularly shaped film along the second direction. The first and second directions are perpendicular to each other. The upper surface of the auxiliary support structure is flush with the upper surface of the part to be bonded or consistent with the upper surface of the irregularly shaped film after bonding the irregularly shaped film to the part to be bonded.

[0025] The roller is pressed onto the side of the irregularly shaped membrane and auxiliary support structure opposite to the bearing seat, and the roller moves along the first direction.

[0026] The film application method provided in this application adopts a film application mold with an auxiliary support structure. The auxiliary support structure makes the pressure of the rollers on each part of the irregular film relatively uniform, thereby reducing or avoiding the occurrence of glue overflow, air bubbles, etc. during the application process between the irregular film and the part to be applied, resulting in a better application effect between the irregular film and the part to be applied.

[0027] The structure of this application, as well as its other inventive objectives and beneficial effects, will become more apparent from the description of the preferred embodiments taken in conjunction with the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the film-applying mold provided in the embodiments of this application;

[0030] Figure 2 This is a schematic diagram of the structure of the support provided in the embodiments of this application;

[0031] Figure 3 This is a top view of the irregularly shaped membrane provided in an embodiment of this application;

[0032] Figure 4 A schematic diagram illustrating the bonding structure between the irregularly shaped membrane and the part to be bonded, as provided in an embodiment of this application.

[0033] Figure 5 for Figure 4 A cross-sectional view along the CC direction;

[0034] Figure 6 A schematic diagram showing that both the irregularly shaped membrane and the part to be bonded are located in the groove, as provided in the embodiments of this application;

[0035] Figure 7 A schematic diagram of a structure in which a first auxiliary support structure and a second auxiliary support structure are simultaneously provided in an embodiment of this application;

[0036] Figure 8 This is a schematic diagram of the structure of the part to be bonded located in the groove, as provided in an embodiment of this application;

[0037] Figure 9a This is a schematic diagram showing the molding composite film provided in an embodiment of this application placed in a film-applying mold;

[0038] Figure 9b Another schematic diagram showing the molding composite film provided in this application embodiment placed in a film-applying mold;

[0039] Figure 10 This is a top view of the molded composite film provided in an embodiment of this application;

[0040] Figure 11 This is a schematic diagram of the structure of the roller pressing component pressed onto the protective film layer according to an embodiment of this application;

[0041] Figure 12 Another schematic diagram of the structure of the roller pressing component pressed onto the protective film layer according to the embodiment of this application;

[0042] Figure 13 Another top view of the molded composite membrane provided in the embodiments of this application;

[0043] Figure 14 This is a schematic flowchart of the film application method provided in an embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100 - Film application mold; 110 - Support base;

[0046] 111 - Supporting part; 112 - Reference plane;

[0047] 113 - Groove; 120 - Auxiliary support structure;

[0048] 121 - First auxiliary support structure; 122 - Second auxiliary support structure;

[0049] 123 - Irregularly shaped mating edge; 130 - Roll-formed part;

[0050] 200 - Molded composite membrane; 210 - Irregularly shaped membrane;

[0051] 211 - First irregular edge; 220 - Protective film layer;

[0052] 230 - Auxiliary pressure bearing part; 300 - Part to be bonded. Detailed Implementation

[0053] In related technologies, irregularly shaped display modules may include stacked irregularly shaped display panels and cover plates, which can be bonded together using optically transparent adhesive. During the bonding process between the cover plate and the display panel, a roller is pressed onto the side of the cover plate away from the display panel. The roller applies pressure to the cover plate during rolling to ensure that the display panel and the cover plate are stably attached and bonded together.

[0054] However, due to the irregular shape of the cover plate, the contact area between different parts of the cover plate and the roller is different along the direction of movement (e.g., rolling) of the roller. One part of the cover plate has a smaller contact area with the roller and experiences greater pressure from the roller, which can easily cause excess adhesive between the cover plate and the display panel. On the other hand, another part of the cover plate has a larger contact area with the roller and experiences less pressure from the roller, which can easily cause air bubbles to form between the display panel and the cover plate, resulting in localized areas that cannot be properly compacted. This leads to a poor bonding effect between the display panel and the cover plate.

[0055] Based on at least one of the aforementioned technical problems, embodiments of this application provide a film-applying mold, a molded composite film, and a film-applying method. The film-applying mold is used to apply an irregularly shaped film to a component to be applied. The irregularly shaped film has irregularly shaped edges. The film-applying mold includes a support base with a support portion for supporting the component to be applied and the irregularly shaped film. An auxiliary support structure is provided on the support base. At different positions along a first direction, the length of the auxiliary support structure along a second direction is equal to the sum of the lengths of the irregularly shaped film along the second direction, and the first and second directions are perpendicular to each other. The upper surface of the auxiliary support structure is flush with the upper surface of the component to be applied or consistent with the upper surface of the irregularly shaped film after it has been applied to the component. The auxiliary support structure ensures that the pressure exerted on each part of the irregularly shaped film by the roller is more consistent, thereby reducing or avoiding excess adhesive, air bubbles, etc., during the application process, resulting in a better application effect.

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0057] The following will combine Figures 1-14 The film-applying mold 100 provided in this application will be described.

[0058] This application provides a film-applying mold 100, which can be used for bonding irregularly shaped films 210 to parts 300 to be bonded. Figure 1 and Figure 2 As shown, the film-applying mold 100 may include a support base 110, which is used to place the irregularly shaped film body 210 and the part to be applied 300. Figure 4 The support base 110 may include a support portion 111, on which the component to be bonded 300 and the irregularly shaped film 210 can be stacked and disposed. That is, the support portion 111 can be used to support the component to be bonded 300 and the irregularly shaped film 210. For example, the component to be bonded 300 may be located on the side of the irregularly shaped film 210 facing the support portion 111. The support base 110 may include a reference plane 112, which is parallel to the XY plane.

[0059] Continue to refer to Figure 1 The film-applying mold 100 may include a roller 130, which is used to press the irregular film 210 on the side away from the support portion 111. The roller 130 can apply pressure to the irregular film 210 so that the irregular film 210 and the part to be applied 300 are tightly bonded together.

[0060] For example, the roller 130 can be cylindrical, so that the pressure exerted by the roller 130 on the irregularly shaped film 210 during the rolling process is more consistent.

[0061] like Figure 3 and Figure 4 As shown, the irregularly shaped film 210 may include a first direction Y, which can be the length direction of the irregularly shaped film 210; the irregularly shaped film 210 may include a second direction X, which can be the width direction of the irregularly shaped film 210; the irregularly shaped film 210 may include a third direction Z, which can be the thickness direction of the irregularly shaped film 210. For example, the first direction Y, the second direction X, and the third direction Z can be perpendicular to each other. The length, width, and thickness in the embodiments of this application are merely for descriptive convenience and do not imply any limitation on the dimensions. For example, the width can be greater than, equal to, or less than the length. The rolling direction of the roller 130 can be the first direction Y, or the rolling direction of the roller 130 can be the second direction X, or the rolling direction of the roller 130 can also be other directions in the XY plane.

[0062] This application embodiment is illustrated using the rolling direction of the roller 130 as the first direction Y and the axial direction of the roller 130 as the second direction X.

[0063] The roller 130 can roll along the first direction Y. Figure 3 The dashed lines D1 and D2 in the figure show two different positions of the irregularly shaped film 210 along the first direction Y. The “irregularly shaped” film refers to the irregularly shaped film 210 located at least two different positions along the second direction X with different lengths, i.e., A1 and A2 are different.

[0064] In some embodiments, such as Figure 4 and Figure 5As shown, along the thickness direction of the irregularly shaped film 210, the irregularly shaped film 210 can be located on the side of the workpiece 300 facing away from the support seat 110. The roller 130 presses against the side of the irregularly shaped film 210 facing away from the support seat 110, so that the roller 130 applies pressure to the irregularly shaped film 210 and the workpiece 300, achieving planar bonding between the irregularly shaped film 210 and the workpiece 300. In some examples, the irregularly shaped film 210 and the workpiece 300 can be connected by applying an adhesive layer. The applied adhesive layer can be a component of the irregularly shaped film 210, or it can be a component of the workpiece 300, or it can be a structural layer independent of the workpiece 300 and the irregularly shaped film 210. If the thickness of the colloid layer cannot be ignored, the sum of the thicknesses of the part to be bonded 300 and the irregularly shaped film 210 includes the thickness of the colloid layer. In other examples, the irregularly shaped film 210 and the part to be bonded 300 are connected by the adhesive force of their materials themselves.

[0065] For example, the film-applying mold 100 can be used for bonding various film layers in a display module. For instance, the display module may include a display panel and a cover plate. The display panel includes a light-emitting side and a backlight side disposed opposite each other along the thickness direction. The light-emitting side is used to display the image. The backlight side is the side opposite to the light-emitting side along the thickness direction of the display module. The cover plate is located on the light-emitting side of the display panel and protects the display panel. The display panel and the cover plate can be connected by an adhesive layer, for example, an optically transparent adhesive. In other examples, the film-applying mold 100 can be used for bonding the display panel to a polarizer, a support member, etc. Taking the bonding between the display panel and the cover plate as an example, the irregularly shaped film 210 can be the cover plate, and the part to be bonded 300 can be the display panel (including the adhesive layer). The cover plate is located between the roller 130 and the display panel, preventing the roller 130 from directly acting on the display panel and thus protecting it.

[0066] like Figure 3As shown, the irregularly shaped film 210 may have irregularly shaped edges, which may be first irregularly shaped edges 211 located at the edge of the irregularly shaped film 210. For example, the first irregularly shaped edge 211 may be located at the edge of the irregularly shaped film 210 extending along a first direction Y and / or along a second direction X. When the first irregularly shaped edge 211 is located at the edge extending along the first direction Y, there is an angle between the extension direction of the first irregularly shaped edge 211 and the first direction Y, and the extension direction of the first irregularly shaped edge 211 is different from the first direction Y; when the first irregularly shaped edge 211 is located at the edge extending along the second direction X, there is an angle between the extension direction of the first irregularly shaped edge 211 and the second direction X, and the extension direction of the first irregularly shaped edge 211 is different from the extension direction of the second direction X. This results in the area of ​​the irregularly shaped film 210 at the first irregularly shaped edge 211 contacting the roller 130 being different from the area of ​​the remaining irregularly shaped film 210 contacting the roller 130. Among them, the edges of the remaining parts of the irregular membrane 210 can be regarded as non-irregular edges.

[0067] In addition, the part to be bonded 300 may have an irregular edge, which may be a second irregular edge, and the second irregular edge is provided corresponding to the first irregular edge 211. For example, the orthographic projection of the first irregular edge 211 on the plane where the support part 111 is located coincides with the orthographic projection of the second irregular edge on the plane where the support part 111 is located.

[0068] like Figure 1 and Figure 4 As shown, the film-applying mold 100 may include an auxiliary support structure 120. In the second direction X, if the length of the irregularly shaped film 210 located at the first irregular edge 211 is less than the length of the irregularly shaped film 210 located at the non-irregular edge, the irregularly shaped film 210 located at the first irregular edge 211 is subjected to greater pressure from the roller 130, thus easily resulting in adhesive overflow. The irregularly shaped film 210 located at the non-irregular edge is subjected to less pressure from the roller 130, thus easily resulting in air bubbles. In this case, the auxiliary support structure 120 can be used to increase the length of the irregularly shaped film 210 at the first irregular edge 211, thereby compensating for the area of ​​the irregularly shaped film 210 at the first irregular edge 211. At different positions along the first direction Y, the length of the roller pressing member 130 pressing on the irregular film 210 and the auxiliary support structure 120 is always the same, so that the area of ​​the roller pressing member 130 pressing on the irregular film 210 and the auxiliary support structure 120 is always the same. This makes the pressure of the roller pressing member 130 on each part of the irregular film 210 more consistent, thereby reducing or avoiding the phenomenon of glue overflow or air bubbles in the irregular film 210 and the part to be bonded 300 during the bonding process, and the bonding effect of the irregular film 210 and the part to be bonded 300 is better.

[0069] The auxiliary support structure 120 provided in the embodiments of this application will be described below.

[0070] In the first embodiment of the auxiliary support structure 120, such as Figure 4 and 5 As shown, a portion of the reference plane 112 of the support base 110 forms the upper surface of the support portion 111. The reference plane 112 and the upper surface of the support portion 111 are located on the same plane, and the arrangement of the support portion 111 is relatively simple. At this time, the auxiliary support structure 120 is located on the reference plane 112, and this auxiliary support structure 120 can be a first auxiliary support structure 121. For example, the first auxiliary support structure 121 can be fixed to the reference plane 112 by welding, snap-fitting, bonding, integral molding, or other methods. This allows the first auxiliary support structure 121 to be reused, and the arrangement of the first auxiliary support structure 121 is relatively simple. After the irregularly shaped film 210 and the part to be bonded 300 are pressed by the roller 130 to complete the bonding, the sum of the thicknesses of the irregularly shaped film 210 and the part to be bonded 300 is equal to the thickness of the first auxiliary support structure 121. At this time, the side of the irregularly shaped film 210 away from the bearing portion 111 is consistent with the side of the first auxiliary support structure 121 away from the bearing portion 111, so that the roller 130 can be pressed well on the irregularly shaped film 210 and the first auxiliary support structure 121.

[0071] It should be noted that in some examples, if the deformation generated when the roller 130 presses against the irregularly shaped film 210 and the first auxiliary support structure 121 is consistent or negligible, the sum of the thicknesses of the irregularly shaped film 210 and the part to be bonded 300 before the roller 130 presses against the irregularly shaped film 210 and the first auxiliary support structure 121 can be the same as the thickness of the first auxiliary support structure 121. In other examples, if the deformation generated when the roller 130 presses against the irregularly shaped film 210 and the first auxiliary support structure 121 is inconsistent and cannot be ignored, the sum of the thicknesses of the irregularly shaped film 210 and the part to be bonded 300 can be slightly different from the thickness of the first auxiliary support structure 121. When the roller press 130 is pressed onto the side of the first auxiliary support structure 121 and the irregularly shaped film 210 away from the bearing seat 110, the thickness of the first auxiliary support structure 121 after deformation (along the thickness direction Z) is equal to the sum of the thicknesses of the irregularly shaped film 210 and the part to be bonded 300 after deformation (along the thickness direction Z), so that the roller press 130 can fully contact the first auxiliary support structure 121 and the irregularly shaped film 210.

[0072] For example, such as Figure 4As shown, the first auxiliary support structure 121 can be arranged opposite to the first irregular edge 211 and the second irregular edge, and the first auxiliary support structure 121 has an irregular mating edge 123, which is arranged opposite to the first irregular edge 211 and the second irregular edge respectively. At different positions along the first direction Y, the length of the first auxiliary support structure 121 along the second direction X is equal to the sum of the lengths of the irregular film 210 along the second direction X, so that the total area of ​​the roller pressing member 130 pressing on the irregular film 210 and the first auxiliary support structure 121 is always the same, thereby making the pressure of the roller pressing member 130 on each part of the irregular film 210 more consistent, thus reducing or avoiding the phenomenon of glue overflow or air bubbles in the irregular film 210 and the part to be bonded 300 during the bonding process, and the bonding effect of the irregular film 210 and the part to be bonded 300 is better.

[0073] In a second embodiment of the auxiliary support structure 120, such as Figure 2 and Figure 6 As shown, a groove 113 is provided on the support 110, and the opening of the groove 113 is located on the reference plane 112. A support portion 111 is formed at the bottom of the groove 113. The irregularly shaped film 210 and the part to be bonded 300 can both be located within the groove 113. After the irregularly shaped film 210 and the part to be bonded 300 are pressed by the roller 130 to complete the bonding, the sum of the thicknesses of the irregularly shaped film 210 and the part to be bonded 300 is equal to the depth of the groove 113. At this time, the groove sidewall of the groove 113 has an irregularly shaped mating edge 123 that is arranged opposite to the first irregularly shaped edge 211 and the second irregularly shaped edge. The support 110 located at the irregularly shaped mating edge 123 forms an auxiliary support structure 120, which can be a second auxiliary support structure 122. The upper surface of the second auxiliary support structure 122 is formed by the reference plane 112. After the irregularly shaped film 210 and the part to be bonded 300 are pressed by the roller 130 to complete the bonding, the sum of the thickness of the irregularly shaped film 210 and the part to be bonded 300 is equal to the thickness of the second auxiliary support structure 122. The side of the irregularly shaped film 210 away from the support seat 110 is consistent with the side of the second auxiliary support structure 122 away from the support part 111, that is, the side of the irregularly shaped film 210 away from the support seat 110 is consistent with the reference plane 112.

[0074] It should be noted that before the roller press 130 presses the irregular film 210 and the second auxiliary support structure 122, the sum of the thicknesses of the irregular film 210 and the part to be bonded 300 can be the same as or slightly different from the thickness of the second auxiliary support structure 122. The principle is similar to the first implementation of the auxiliary support structure 120, and will not be described again.

[0075] For example, the second auxiliary support structure 122 can be disposed opposite to the first irregular edge 211 and the second irregular edge, and the second auxiliary support structure 122 has an irregular mating edge 123, which is disposed opposite to the first irregular edge 211 and the second irregular edge respectively. At different positions along the first direction Y, the length of the second auxiliary support structure 122 along the second direction X is equal to the sum of the lengths of the irregular film 210 along the second direction X. This can reduce or avoid the occurrence of adhesive overflow or air bubbles during the bonding process between the irregular film 210 and the part to be bonded 300, resulting in a better bonding effect between the irregular film 210 and the part to be bonded 300. Its principle is similar to that of the first embodiment of the auxiliary support structure 120, and will not be described again.

[0076] In a third embodiment of the auxiliary support structure 120, such as Figure 7 and Figure 8 As shown, a groove 113 is provided on the support 110, and the part 300 to be bonded is located in the groove 113. The thickness of the part 300 to be bonded can be equal to the groove depth of the groove 113. The groove 113 has a limiting function for the part 300 to be bonded. The groove sidewall of the groove 113 has a shaped mating edge 123 that is opposite to the second shaped edge, and the support 110 located at the shaped mating edge 123 forms a second auxiliary support structure 122. The upper surface of the second auxiliary support structure 122 is formed by the reference plane 112. At this time, the thickness of the part 300 to be bonded can be the thickness of the second auxiliary support structure 122. The surface of the part 300 to be bonded away from the support portion 111 can be flush with the surface of the second auxiliary support structure 122 away from the support portion 111. In addition, a first auxiliary support structure 121 is provided on the reference plane 112. After the irregularly shaped film 210 and the workpiece 300 to be bonded are pressed together by the roller 130 to complete the bonding, the sum of the thicknesses of the irregularly shaped film 210 and the workpiece 300 to be bonded is equal to the sum of the thicknesses of the first auxiliary support structure 121 and the second auxiliary support structure 122. The side of the irregularly shaped film 210 facing away from the support seat 110 is consistent with the side of the first auxiliary support structure 121 facing away from the support portion 111. The principles of the first auxiliary support structure 121 and the second auxiliary support structure 122 have been explained and will not be repeated here.

[0077] It should be noted that before the roller press 130 presses the irregular film 210 and the second auxiliary support structure 122, the sum of the thickness of the irregular film 210 and the part to be bonded 300 can be the same as or slightly different from the sum of the thickness of the first auxiliary support structure 121 and the second auxiliary support structure 122. The principle is similar to the first implementation of the auxiliary support structure 120, and will not be described again.

[0078] For example, the first auxiliary support structure 121 is disposed opposite to the first irregular edge 211, and the second auxiliary support structure 122 is disposed opposite to the second irregular edge. Both the first auxiliary support structure 121 and the second auxiliary support structure 122 have irregular mating edges 123, which are disposed opposite to the first irregular edge 211 and the second irregular edge, respectively. At different positions along the first direction Y, the length of the first auxiliary support structure 121 along the second direction X is equal to the sum of the lengths of the irregular film 210 along the second direction X. This can reduce or avoid adhesive overflow or air bubbles during the bonding process between the irregular film 210 and the part to be bonded 300, resulting in a better bonding effect between the irregular film 210 and the part to be bonded 300. Its principle is similar to the first embodiment of the auxiliary support structure 120 and will not be described again.

[0079] In a fourth embodiment of the auxiliary support structure 120, such as Figure 10 and Figure 11 As shown, the irregularly shaped film 210, the auxiliary pressure-bearing part 230, and the protective film layer 220 together form the molded composite film 200. The film-applying mold 100 is used to apply the irregularly shaped film 210 in the molded composite film 200 to the part 300 to be applied. The thickness of the auxiliary pressure-bearing part 230 can be equal to the thickness of the irregularly shaped film 210, and the roller 130 can press on both the auxiliary pressure-bearing part 230 and the irregularly shaped film 210 simultaneously.

[0080] The irregularly shaped membrane 210 includes a first surface and a second surface disposed opposite to each other along the thickness direction. The first surface is close to the support portion 111, and the second surface is away from the support portion 111. A protective film layer 220 can be provided on at least one of the first and second surfaces. The protective film layer 220 can protect the irregularly shaped membrane 210 during handling and can be removed in subsequent processes. For example, the protective film layer 220 can be a release film. The irregularly shaped membrane 210 and the auxiliary pressure-bearing portion 230 are both located on the same side of the protective film layer 220 and are connected by the protective film layer 220 to facilitate the handling and protection of the irregularly shaped membrane 210 and the auxiliary pressure-bearing portion 230. The auxiliary pressure-bearing portion 230 can be disposed opposite to the first irregularly shaped edge 211. This embodiment of the application is illustrated by an example where both the first and second surfaces are provided with protective film layers 220. The irregularly shaped membrane 210 and the auxiliary pressure-bearing part 230 are both located between the two protective membrane layers 220.

[0081] In some examples, such as Figure 9a As shown, a groove 113 is provided on the support 110, and the part 300 to be fitted is located in the groove 113. The groove sidewall of the groove 113 has an irregularly shaped mating edge 123 that is arranged opposite to the second irregularly shaped edge. Figure 2The bearing seat 110 located at the irregular mating edge 123 forms a second auxiliary support structure 122. The upper surface of the second auxiliary support structure 122 is formed by the reference plane 112. The thickness of the part to be bonded 300 can be equal to the groove depth of the groove 113, and the surface of the part to be bonded 300 away from the bearing portion 111 can be flush with the surface of the second auxiliary support structure 122 away from the bearing portion 111 (i.e., the reference plane 112).

[0082] The molded composite film 200 can be placed entirely on the film-applying mold 100, with the irregularly shaped film 210 and the part to be applied 300 aligned, and the auxiliary pressure-bearing part 230 aligned with the reference plane 112 (second auxiliary support structure 122). Before placing the molded composite film 200 on the film-applying mold 100, the protective film layer 220 on the first surface can be removed to prevent it from affecting the bonding between the irregularly shaped film 210 and the part to be applied 300. The protective film layer 220 on the second surface is retained to facilitate the handling and protection of the irregularly shaped film 210 and the auxiliary pressure-bearing part 230. After the bonding of the irregularly shaped film 210 and the part to be applied 300 is completed, the protective film layer 220 on the second surface can be removed, and the auxiliary pressure-bearing part 230 can be removed at the same time.

[0083] In other examples, such as Figure 9b As shown, the first auxiliary support structure 121 is located on the reference plane 112, and a portion of the reference plane 112 forms a bearing portion 111. The thickness of the part to be bonded 300 is the same as the thickness of the first auxiliary support structure 121. At this time, the surface of the part to be bonded 300 facing away from the bearing portion 111 can be flush with the surface of the first auxiliary support structure 121 facing away from the bearing portion 111.

[0084] The molded composite film 200 can be placed as a whole on the film-applying mold 100, the irregularly shaped film 210 is applied to the part to be applied 300, and the auxiliary pressure-bearing part 230 is applied to the first auxiliary support structure 121. The principle has been explained and will not be repeated here.

[0085] In the embodiment of the laminated composite film 200, the auxiliary pressure-bearing portion 230 is disposed opposite to the first irregular edge 211, and the auxiliary support structure 120 (either the first auxiliary support structure 121 or the second auxiliary support structure 122) is disposed opposite to the second irregular edge. Both the auxiliary pressure-bearing portion 230 and the auxiliary support structure 120 have irregularly shaped mating edges 123, which are disposed opposite to the first irregular edge 211 and the second irregular edge, respectively. At different positions along the first direction Y, the length of the auxiliary pressure-bearing portion 230 along the second direction X is equal to the sum of the lengths of the irregular film body 210 along the second direction X. This reduces or avoids adhesive overflow or air bubbles during the bonding process between the irregular film body 210 and the part to be bonded 300, resulting in a better bonding effect between the irregular film body 210 and the part to be bonded 300.

[0086] Specifically, such as Figure 12 As shown, the roller 130 rolls along the first direction Y. Figure 13 As shown, the molded composite membrane 200 includes any two different positions D3 and D4 along the first direction Y. Along the second direction X, the sum of the length A of the irregularly shaped membrane body 210 and the lengths (B1+B2) of all auxiliary pressure-bearing portions 230 is A+B1+B2. Along the first direction Y, A+B1+B2 is equal at all positions of the molded composite membrane 200, and the A+B1+B2 of the molded composite membrane 200 at different positions remains constant. That is, A+B1+B2 is the same at any two different positions D3 and D4. This ensures that the contact area between the roller 130 and the molded composite film 200 remains constant, resulting in more consistent pressure from the roller 130 on all parts of the molded composite film 200. This also ensures that the irregularly shaped film 210 and the part to be bonded 300 experience more consistent pressure from the roller 130, thereby reducing or avoiding air bubbles and excess adhesive during the bonding process. This results in a better bonding effect between the irregularly shaped film 210 and the part to be bonded 300.

[0087] When forming the irregularly shaped membrane 210, the original membrane needs to be punched to obtain the irregularly shaped membrane 210 and the waste material located on the outer periphery of the irregularly shaped membrane 210, so as to separate the irregularly shaped membrane 210 from the waste material on the outer periphery, thereby obtaining the irregularly shaped membrane 210 of the desired shape. A protective film layer 220 can be applied to opposite sides of the original membrane in the thickness direction before punching to better protect the original membrane. When punching is required, the protective film layer 220 on one side is torn off, and punching is performed from that side of the original membrane, so that the irregularly shaped membrane 210 and the waste material located on the outer periphery of the irregularly shaped membrane 210 are separated. The waste material on the outer periphery of the irregularly shaped membrane 210 is connected to the outer periphery of the irregularly shaped membrane 210 through the protective film layer 220, and the waste material on the outer periphery of the irregularly shaped membrane 210 forms an auxiliary pressure-bearing part 230, making the material cost of the auxiliary pressure-bearing part 230 relatively low.

[0088] In addition, since the protective film layer 220 is applied to the irregularly shaped membrane 210 and the auxiliary pressure-bearing part 230 before punching, the punched irregularly shaped membrane 210 and the auxiliary pressure-bearing part 230 still maintain their original positions, eliminating the need to align the irregularly shaped membrane 210 and the auxiliary pressure-bearing part 230 in subsequent processes, which simplifies subsequent operations.

[0089] It is understood that the irregularly shaped mating edge 123 (the irregularly shaped mating edge 123 of the auxiliary support structure 120 and / or the irregularly shaped mating edge 123 of the auxiliary pressure bearing part 230) in the above-described various embodiments can be adapted to the shape of the irregularly shaped edge (the first irregularly shaped edge 211 and / or the second irregularly shaped edge) and are arranged opposite to each other so that the pressure formed by the roller pressing member 130 on the irregularly shaped film 210 at different positions in the first direction Y is consistent.

[0090] This application embodiment is illustrated by taking the first irregular edge 211 and the irregular mating edge 123 of the auxiliary support structure 120 as an example.

[0091] For example, the first irregular edge 211 can be an arc-shaped edge, so that the stress on the first irregular edge 211 when subjected to external force is more uniform and less prone to damage. At this time, the irregular mating edge 123 can also be an arc-shaped edge, and the arc of the irregular mating edge 123 is equal to that of the first irregular edge 211, which makes it easy to compensate for the area of ​​the irregular film 210, so that the irregular film 210 and the part to be bonded 300 are subjected to more consistent pressure from the roller 130.

[0092] For example, there can be at least one first irregular edge 211. When there are multiple first irregular edges 211, they can be spaced apart at the edge of the irregular membrane 210. Correspondingly, multiple auxiliary support structures 120 can be provided, with each auxiliary support structure 120 corresponding to one of the first irregular edges 211.

[0093] For example, the distance between the irregular edge and the irregular mating edge 123 can range from 0.02mm to 0.5mm. In embodiments where the irregular membrane 210 and the auxiliary support structure 120 are arranged opposite each other, the distance between the irregular membrane 210 and the auxiliary support structure 120 can range from 0.02mm to 0.5mm. This avoids the irregular membrane 210 and the auxiliary support structure 120 being too close, and prevents the adhesive layer between the irregular membrane 210 and the part to be bonded 300 from adhering to the auxiliary support structure 120 after deformation under pressure. It also avoids the irregular membrane 210 and the auxiliary support structure 120 being too far apart, thus making the alignment between the irregular membrane 210 and the auxiliary support structure 120 easier. For example, the distance between the irregular membrane 210 and the auxiliary support structure 120 can be any distance between 0.02mm, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm or 0.02mm-0.5mm.

[0094] The following describes the film application method provided in the embodiments of this application.

[0095] The film application method provided in the embodiments of this application, such as Figure 14 As shown, the film application method may include:

[0096] S100: Provides an irregularly shaped film, a part to be bonded, and a film-bonding mold. The irregularly shaped film and the part to be bonded are both located on the support portion of the support seat of the film-bonding mold.

[0097] First, the part to be bonded 300 is placed on the support portion 111, and then the irregularly shaped film 210 is placed on the side of the part to be bonded 300 away from the support portion 111. By providing the auxiliary support structure 120 in the above-described various embodiments on the support 110, and making the upper surface of the auxiliary support structure 120 flush with the upper surface of the part to be bonded 300; or, after the irregularly shaped film 210 and the part to be bonded 300 are bonded, the upper surface of the irregularly shaped film 210 is consistent with the upper surface of the auxiliary support structure 120, so that the roller pressing member 130 can be better pressed on the irregularly shaped film 210 and the auxiliary support structure 120. In addition, at different positions along the first direction Y, the length of the auxiliary support structure 120 along the second direction X is equal to the sum of the length of the irregular film 210 along the second direction X. This makes the pressure of the irregular film 210 and the part to be bonded 300 under the pressure of the roller 130 more consistent, thereby reducing or avoiding air bubbles and glue overflow during the bonding process of the irregular film 210 and the part to be bonded 300, resulting in a better bonding effect between the irregular film 210 and the part to be bonded 300.

[0098] Furthermore, in the embodiment where the irregularly shaped membrane 210 is connected to the auxiliary pressure-bearing portion 230, at different positions along the first direction Y, the length of the auxiliary pressure-bearing portion 230 along the second direction X is equal to the sum of the lengths of the irregularly shaped membrane 210 along the second direction X. The principle behind this is already established and will not be elaborated further. The protective membrane layer 220 is located on the side of the irregularly shaped membrane 210 and the auxiliary pressure-bearing portion 230 opposite to the bearing portion 111.

[0099] S200: The roller is pressed onto the side of the irregularly shaped membrane and auxiliary support structure away from the bearing seat, and the roller moves along the first direction.

[0100] Because the length of the auxiliary support structure 120 along the second direction X is equal to the sum of the lengths of the irregularly shaped film 210 along the second direction X at different positions along the first direction Y, the area pressed by the roller 130 on the irregularly shaped film 210 and the auxiliary support structure 120 remains constant when the roller 130 moves along the first direction Y. This ensures that the pressure exerted by the roller 130 on the irregularly shaped film 210 and the part to be bonded 300 is relatively consistent, thereby reducing or avoiding air bubbles and adhesive overflow during the bonding process, resulting in a better bonding effect between the irregularly shaped film 210 and the part to be bonded 300.

[0101] In addition, in the embodiment where the irregularly shaped membrane 210 is connected to the auxiliary pressure bearing part 230, after the irregularly shaped membrane 210 and the part to be bonded 300 are bonded together, the remaining protective film layer 220 and the auxiliary pressure bearing part 230 can be peeled off.

[0102] It should be noted that the numerical values ​​and ranges involved in the embodiments of this application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0103] It should be further explained that, in this case, the upper surface of the auxiliary support structure 120 being consistent with the upper surface of the irregularly shaped film 210 that is bonded to the part to be bonded 300 can be: the upper surface of the auxiliary support structure 120 being higher than the upper surface of the irregularly shaped film 210 that is bonded to the part to be bonded 300, and the height difference between the two being within a predetermined range. This range ensures that before the protective film layer 220 in the molded composite film 200 is torn off after the roller pressing member 130 completes the rolling motion, the upper surface of the auxiliary support structure 120 is flush with the upper surface of the protective film layer 220 or the height difference is within a preset range (this range enables the auxiliary support structure 120 to perform the required auxiliary support function).

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A film-applying mold, characterized in that, The mold is used to bond an irregularly shaped film to a part to be bonded. The irregularly shaped film has irregularly shaped edges. The film bonding mold includes a support base, which has a support portion for supporting the part to be bonded and the irregularly shaped film. An auxiliary support structure is provided on the bearing seat, and the distance between the irregularly shaped membrane and the auxiliary support structure ranges from 0.02mm to 0.5mm. At different positions along the first direction, the length of the auxiliary support structure along the second direction is equal to the sum of the length of the irregular membrane along the second direction, and the first direction and the second direction are perpendicular to each other; The upper surface of the auxiliary support structure is flush with the upper surface of the part to be bonded or is consistent with the upper surface of the irregularly shaped membrane after the irregularly shaped membrane is bonded to the part to be bonded. The support base has a reference plane and a groove corresponding to the reference plane. The support portion is formed at the bottom of the groove, and the depth of the groove corresponding to the support portion is equal to the thickness of the part to be bonded. The groove sidewall has an irregularly shaped mating edge that is opposite to the first irregularly shaped edge of the irregularly shaped membrane and the second irregularly shaped edge of the part to be bonded; the bearing seat located at the irregularly shaped mating edge forms a second auxiliary support structure; a first auxiliary support structure is provided on the reference plane; The upper surface of the second auxiliary support structure is flush with the reference plane, or the upper surface of the first auxiliary support structure is consistent with the upper surface of the irregularly shaped membrane after the irregularly shaped membrane is bonded to the part to be bonded.

2. The film-applying mold according to claim 1, characterized in that, The auxiliary support structure has irregularly shaped mating edges, which are adapted to the shape of the irregularly shaped edge and are arranged opposite to each other.

3. The film-applying mold according to claim 2, characterized in that, Both the irregular mating edge and the irregular edge are arc-shaped edges, and the arc of the irregular mating edge and the irregular edge are equal.

4. The film-applying mold according to any one of claims 1-3, characterized in that, It includes a roller pressing element, which is pressed onto the side of the auxiliary support structure and the irregularly shaped membrane opposite to the support seat.

5. The film-applying mold according to claim 4, characterized in that, The roller is cylindrical, and its axial direction is the second direction.

6. A molded composite film, characterized in that, It includes an irregularly shaped membrane, an auxiliary pressure-bearing part, and a protective membrane layer. The irregularly shaped membrane and the auxiliary pressure-bearing part are both located on the same side of the protective membrane layer and are connected through the protective membrane layer. The irregularly shaped membrane has irregularly shaped edges, and the auxiliary pressure-bearing part is disposed opposite to the irregularly shaped edges; At different positions along the first direction, the sum of the length of the irregularly shaped membrane along the second direction and the length of the auxiliary pressure-bearing portion along the second direction is equal; the first direction and the second direction are perpendicular to each other; The thickness of the auxiliary pressure-bearing part is equal to the thickness of the irregularly shaped membrane.

7. A method for applying a film, characterized in that, include: The system provides an irregularly shaped film, a workpiece to be bonded, and a film-applying mold. Both the irregularly shaped film and the workpiece to be bonded are located on the support portion of the support base of the film-applying mold. At different positions along a first direction, the length of the auxiliary support structure of the film-applying mold along a second direction is equal to the sum of the lengths of the irregularly shaped film along the second direction. The first direction and the second direction are perpendicular to each other. The upper surface of the auxiliary support structure is flush with the upper surface of the workpiece to be bonded or coincides with the upper surface of the irregularly shaped film after bonding it to the workpiece. The support base has a reference plane and a groove corresponding to the reference plane. The support portion is formed at the bottom of the groove, and the depth of the groove corresponding to the support portion is equal to the thickness of the part to be bonded. The groove sidewall has an irregularly shaped mating edge that is opposite to the first irregularly shaped edge of the irregularly shaped membrane and the second irregularly shaped edge of the part to be bonded; the bearing seat located at the irregularly shaped mating edge forms a second auxiliary support structure; a first auxiliary support structure is provided on the reference plane; The upper surface of the second auxiliary support structure is flush with the reference plane, or the upper surface of the first auxiliary support structure is consistent with the upper surface of the irregularly shaped membrane after the irregularly shaped membrane is bonded to the part to be bonded. The roller is pressed onto the side of the irregularly shaped membrane and the auxiliary support structure opposite to the bearing seat, and the roller moves along the first direction.

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