Manufacturing method of screen supporting plate

Abstract

The embodiment of the invention provides a manufacturing method of a screen supporting plate. The manufacturing method comprises the following steps: providing a prepreg layer; providing a metal layer, and forming a pattern on the metal layer; wherein the pattern is configured to be capable of cutting off any straight line in a plane where the metal layer is located; laminating the metal layer and the prepreg layer; and carrying out hot-pressing curing molding on the overlapped metal layer and prepreg layer to obtain the screen supporting plate. The prepreg layer and the metal layer are combined in an overlapping and hot-pressing curing forming mode, the process steps are few, the process is simple, high yield and low cost can be guaranteed, meanwhile, the pattern capable of cutting off any straight line in the plane where the metal layer is located is formed on the metal layer, and the production efficiency is improved. Internal stress generated in the hot-pressing curing forming process is sufficiently relieved, warping is reduced, and flatness is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a method for manufacturing a screen support plate. Background Art

[0002] A support plate is needed behind folding screens, flexible screens, etc. to give the screen a certain strength and rigidity. The thickness of the support plate is commonly between 0.08 and 0.2 mm. For folding screen phones or tablets, a weakened structure will also be designed at the folding point to facilitate folding. The support plate was made of stainless steel in the early days, and later titanium alloy thin plates were developed. Due to the high density of the metal, the support plate was too heavy. Considering the demand for lightweight and thinness, a thin plate made of composite material was developed as an under-screen support.

[0003] In the existing technology, a metal film is attached to one side of the composite material plate by physical vapor deposition (PVD), electroplating and lamination, so that the support plate also has conductivity and can better dissipate heat. However, these production methods are complex, have low yields and are too costly. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a method for manufacturing a screen support plate, which can simplify the process, improve the yield and reduce the cost.

[0005] An embodiment of the present invention provides a method for manufacturing a screen support plate, the manufacturing method comprising: providing a prepreg layer; providing a metal layer, and forming a pattern on the metal layer; wherein the pattern is configured to cut off any straight line within the plane where the metal layer is located; stacking the metal layer and the prepreg layer; and hot pressing and curing the stacked metal layer and the prepreg layer to obtain a screen support plate.

[0006] The method for manufacturing the screen support plate provided in the embodiment of the present invention has at least the following beneficial effects: By combining the prepreg layer and the metal layer by stacking and hot pressing curing, the process steps are fewer, the process is simple, and high yield and low cost can be guaranteed. At the same time, a pattern is formed on the metal layer that can cut off any straight line in the plane where the metal layer is located, so as to fully alleviate the internal stress generated during the hot pressing curing process, reduce warping, and improve flatness.

[0007] In an example of this implementation manner, providing a metal layer and forming a pattern on the metal layer includes: die-cutting the metal layer to form the pattern.

[0008] In an example of this implementation, the die-cutting of the metal layer to form the pattern includes: providing a die-cutting roller, the die-cutting roller being provided with a cutter corresponding to the pattern; providing a film material, the film material including a carrier film and the metal layer stacked on the top side of the carrier film; driving the die-cutting roller to rotate so that the cutter cuts through the metal layer.

[0009] In an example of this implementation, stacking the metal layer with the prepreg layer includes: cutting the metal layer to obtain a plurality of first unit layers; cutting the prepreg layer to obtain a plurality of second unit layers; and stacking the plurality of first unit layers and the plurality of second unit layers one by one.

[0010] In an example of this implementation manner, providing the prepreg layer includes: providing a plurality of carbon fiber prepregs; and stacking the plurality of carbon fiber prepregs in sequence.

[0011] In an example of this embodiment, before laminating the metal layer and the prepreg layer, the method includes: coating an adhesive material on a surface of the metal layer facing the prepreg layer and / or a surface of the prepreg layer facing the metal layer.

[0012] In an embodiment of this implementation, the pattern includes a plurality of first hollow units and a plurality of second hollow units, and the plurality of first hollow units and the plurality of second hollow units are respectively arranged in vertical transverse and longitudinal arrays on the metal layer, and two adjacent first hollow units and second hollow units are staggered in both the transverse and longitudinal directions.

[0013] In an embodiment of this implementation manner, the first hollow unit includes a first groove and a second groove, and the second hollow unit includes a third groove and a fourth groove, a plane perpendicular to the transverse direction is defined as a first reference plane, and a plane perpendicular to the longitudinal direction is defined as a second reference plane; the first groove and the second groove intersect, the third groove and the fourth groove intersect, the first groove and the third groove both extend in the transverse direction, and the second groove and the fourth groove both extend in the longitudinal direction, and in any two adjacent first hollow units and second hollow units, the orthographic projections of the first groove and the third groove on the second reference plane partially overlap, and the orthographic projections of the second groove and the fourth groove on the first reference plane partially overlap; or, the first groove and the second groove intersect, the third groove and the fourth groove intersect, the first groove and the second groove extend in the transverse direction and the longitudinal direction respectively, the third groove and the fourth groove extend in the first direction and the second direction respectively, the first direction is perpendicular to the second direction, and the first The direction is relatively inclined to the transverse direction, and in any two adjacent first hollow units and the second hollow units, the third groove and the fourth groove respectively overlap with the orthographic projection part of the first groove on the second reference plane, and the third groove and the fourth groove respectively overlap with the orthographic projection part of the second groove on the first reference plane; or, the second groove is arranged at one side of the first groove in the longitudinal direction, and the fourth groove is arranged at one side of the third groove in the longitudinal direction, the first groove and the third groove both extend along the transverse direction, and the second groove and the fourth groove both extend along the longitudinal direction, in any two adjacent first hollow units and the second hollow units, the third groove and the orthographic projection part of the first groove on the second reference plane overlap, and the fourth groove and the orthographic projection part of the second groove on the first reference plane overlap, and any third groove is located between two adjacent second grooves in the longitudinal direction, and any fourth groove is located between two adjacent fourth grooves in the transverse direction.

[0014] In an embodiment of this implementation, the first hollow unit includes a fifth groove extending along the curve, the second hollow unit includes a sixth groove extending along the curve, a plane perpendicular to the transverse direction is defined as a first reference plane, and a plane perpendicular to the longitudinal direction is defined as a second reference plane; in any two adjacent first hollow units and second hollow units, the orthographic projections of the fifth groove and the sixth groove on the first reference plane and the second reference plane partially overlap.

[0015] In an embodiment of this implementation manner, the first hollow unit includes a V-shaped seventh groove, and the second hollow unit includes a V-shaped eighth groove, the opening directions of the seventh groove and the eighth groove are opposite, a plane perpendicular to the transverse direction is defined as a first reference plane, and a plane perpendicular to the longitudinal direction is defined as a second reference plane; in any two adjacent first hollow units and second hollow units, the orthographic projections of the seventh groove and the eighth groove on the first reference plane and the second reference plane partially overlap.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 is a flow chart of a method for manufacturing a screen support plate provided in an embodiment of the present invention; Figure 2 is a schematic structural diagram of a screen support plate formed by a manufacturing method of an embodiment of an implementation mode of the present invention; Figure 3 It is a schematic diagram of the structure of a film material used in a manufacturing method of an embodiment of the present invention; Figure 4 is a schematic structural diagram of a metal layer in an embodiment of an implementation manner of the present invention; Figure 5 yes Figure 4 A schematic diagram of an enlarged structure of region I of the metal layer; Figure 6 is a schematic structural diagram of a metal layer of another embodiment of an implementation manner of the present invention; Figure 7 yes Figure 6 A schematic diagram of an enlarged structure of region I of the metal layer; Figure 8 is a schematic structural diagram of a metal layer of another embodiment of an implementation manner of the present invention; Fig. 9 yes Figure 8 A schematic diagram of an enlarged structure of region I of the metal layer; Fig.10 is a schematic structural diagram of a metal layer of another embodiment of an implementation manner of the present invention; Fig.11 yes Fig.10 A schematic diagram of an enlarged structure of region I of the metal layer; Fig.12 is a schematic structural diagram of a metal layer of another embodiment of an implementation manner of the present invention; Fig.13 yes Fig.12 Schematic diagram of the enlarged structure of region I of the metal layer.

[0018] Reference numerals: Screen support plate 100; prepreg layer 10; first carbon fiber prepreg 111; second carbon fiber prepreg 112; third carbon fiber prepreg 113; metal layer 20; pattern 21; first hollow unit 211; first groove 2111; second groove 2112; fifth groove 2113; seventh groove 2114; second hollow unit 212; third groove 2121; fourth groove 2122; sixth groove 2123; eighth groove 2124; transverse direction 91; longitudinal direction 92; first reference surface 93; second reference surface 94; film material 200; carrier film 30. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0023] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0024] See also Figure 1 , Figure 2 and Figure 4 , Figure 1 is a flow chart of a method for manufacturing a screen support plate 100 provided in an embodiment of the present invention; Figure 2 is a schematic structural diagram of a screen support plate 100 formed by a manufacturing method of an embodiment of an implementation mode of the present invention; Figure 4 2 is a schematic diagram of the structure of a metal layer 20 of an embodiment of an implementation mode of the present invention. An embodiment of the present invention provides a method for manufacturing a screen support plate 100, and the manufacturing method includes: S101: providing a prepreg layer 10; S102: providing a metal layer 20, and forming a pattern 21 on the metal layer 20; wherein the pattern 21 is configured to cut off any straight line in the plane where the metal layer 20 is located; S103: Laminating the metal layer 20 and the prepreg layer 10; S104 : hot pressing and curing the laminated metal layer 20 and prepreg layer 10 to obtain a screen support plate 100 .

[0025] Specifically, the material of the prepreg layer 10 may be carbon fiber, polystyrene, glass fiber, carbon fiber, boron fiber, etc. The material of the metal layer 20 may be copper, aluminum, titanium alloy, etc. The pattern 21 may be formed on the metal layer 20 by etching, die cutting, etc. After the metal layer 20 and the prepreg layer 10 are hot pressed and cured, they may be post-processed by cooling, cleaning, etc.

[0026] It is understandable that the existing process steps for combining the metal layer 20 and the prepreg layer 10 (such as physical vapor deposition, electroplating and bonding, etc.) are too complicated, and the yield of the molding is too low and the cost is too high. Therefore, the combination is combined by lamination and hot pressing and curing. Compared with the above method, the process is simpler, the yield is higher and the cost is lower. At the same time, considering that there is a difference in the thermal expansion coefficient between the metal layer 20 and the prepreg layer 10, hot pressing and curing are prone to warping, resulting in insufficient flatness. Before lamination and hot pressing and curing, a pattern 21 that can cut off any straight line in the plane where the metal layer 20 is located is formed on the metal layer 20. Such a pattern 21 can provide sufficient space to relieve and release the internal stress generated during hot pressing and curing, thereby reducing warping and improving flatness.

[0027] With such a configuration, the screen support plate 100 formed by the method for manufacturing the screen support plate 100 provided in the embodiment of the present invention can not only meet the performance characteristics required by the screen, such as rigidity, strength, electrical conductivity, good heat dissipation and the like, but also can simplify the process, ensure high yield and low cost, and have good flatness.

[0028] In one embodiment of this implementation, please refer to Figure 1 and Figure 4 , S102: providing a metal layer 20, and forming a pattern 21 on the metal layer 20, including: S1021 : die-cutting the metal layer 20 to form a pattern 21 .

[0029] It can be understood that the die-cutting method is used to form the pattern 21 on the metal layer 20 , which not only has a higher processing efficiency, but also has a simpler process and reduces the processing cost.

[0030] In one embodiment of this implementation, please refer to Figure 1 , Figure 3 and Figure 4 , Figure 3 2 is a schematic diagram of the structure of a film material 200 used in a manufacturing method of an embodiment of the present invention. S1021: Die-cutting the metal layer 20 to form a pattern 21, including: S10211: providing a die-cutting roller, wherein the die-cutting roller is provided with a cutter corresponding to the pattern 21; S10212: providing a film material 200, wherein the film material 200 includes a carrier film 30 and a metal layer 20 stacked on a top side of the carrier film 30; S10213 : driving the die-cutting roller to rotate so that the cutter cuts through the metal layer 20 .

[0031] In this way, the carrier film 30 can ensure that the cutter on the die-cutting roller can fully cut through the metal layer 20, reducing the risk that the area where the pattern 21 exists cannot be completely cut through, and ensuring the forming yield of the pattern 21. At the same time, the carrier film 30 can drive the metal layer 20 to load and unload, and the processing efficiency is high.

[0032] In one embodiment of this implementation, please refer to Figure 1 S103: Laminating the metal layer 20 with the prepreg layer 10, including: S1031: cutting the metal layer 20 to obtain a plurality of first unit layers; S1032: cutting the prepreg layer 10 to obtain a plurality of second unit layers; S1033: Overlay the plurality of first unit layers and the plurality of second unit layers one by one respectively.

[0033] In this arrangement, a large-area pattern 21 is first die-cut on the metal layer 20, and then the metal layer 20 is cut to obtain a plurality of first unit layers, each of which has a size corresponding to the desired product, and the prepreg layer 10 is cut to obtain a plurality of second unit layers, each of which has a size corresponding to the desired product, and then the plurality of first unit layers and the plurality of second unit layers are overlapped one by one, and then are hot-pressed and cured respectively, so that a plurality of first support plates can be formed at the same time, thereby improving processing efficiency.

[0034] In one embodiment of this implementation, please refer to Figure 1 and Figure 2 , S101: providing a prepreg layer 10, including: S1011: Provide multiple carbon fiber prepregs; S1012: stacking a plurality of carbon fiber prepregs in sequence, wherein at least two of the carbon fiber prepregs have different fiber orientations.

[0035] With such arrangement, a prepreg layer 10 with high strength and rigidity and light weight can be formed. Specifically, in the present embodiment, the plurality of carbon fiber prepregs include a first carbon fiber prepreg 111, a second carbon fiber prepreg 112 and a third carbon fiber prepreg 113. The first carbon fiber prepreg 111, the second carbon fiber prepreg 112 and the third carbon fiber prepreg 113 are stacked in sequence, and the metal layer 20 is stacked on the surface of the first carbon fiber prepreg 111 facing away from the second carbon fiber prepreg 112. The fiber orientation of the first carbon fiber prepreg 111 is 0 degrees, the fiber orientation of the second carbon fiber prepreg 112 is 90 degrees, and the fiber orientation of the third carbon fiber prepreg 113 is 0 degrees. With such arrangement, the strength and rigidity of the prepreg layer 10 can be ensured while reducing the weight and thickness of the prepreg layer 10.

[0036] In other embodiments, the number of the plurality of carbon fiber prepregs may also be four, and the four carbon fiber prepregs are stacked sequentially, and the fiber orientations are 0 degrees, 90 degrees, 90 degrees, and 0 degrees, respectively.

[0037] In one embodiment of this implementation, please refer to Figure 1 S103: Before laminating the metal layer 20 with the prepreg layer 10, the process includes: S103 a : applying an adhesive material on the surface of the metal layer 20 facing the prepreg layer 10 and / or on the surface of the prepreg layer 10 facing the metal layer 20 .

[0038] Such an arrangement can improve the bonding force between the metal layer 20 and the prepreg layer 10 , and cooperate with the hot pressing curing molding process to ensure the connection strength between the metal layer 20 and the prepreg layer 10 .

[0039] In one embodiment of this implementation, please refer to Figure 1 , Figure 4 and Figure 5 , Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of the I region of the metal layer 20. The pattern 21 includes a plurality of first hollow units 211 and a plurality of second hollow units 212, and the plurality of first hollow units 211 and the plurality of second hollow units 212 are respectively arranged in an array along the vertical horizontal 91 and vertical 92 on the metal layer 20, and two adjacent first hollow units 211 and second hollow units 212 are staggered in the horizontal 91 and vertical 92 at the same time. With such a configuration, the straight line located in the plane where the metal layer 20 is located can be cut into as many line segments as possible through the pattern 21, and the shortest connecting line not cut by the pattern 21 is as long as possible than the straight line distance between the two points. At the same time, the pattern 21 can be distributed as evenly as possible, which is conducive to fully releasing the internal stress and ensuring the flatness of the product.

[0040] In one embodiment of this implementation, please refer to Figure 4 and Figure 5The first hollow unit 211 includes a first groove 2111 and a second groove 2112, and the second hollow unit 212 includes a third groove 2121 and a fourth groove 2122. A plane perpendicular to the horizontal direction 91 is defined as a first reference plane 93, and a plane perpendicular to the longitudinal direction 92 is defined as a second reference plane 94. The first groove 2111 and the second groove 2112 intersect, and the third groove 2121 and the fourth groove 2122 intersect. The first groove 2111 and the third groove 2121 both extend along the horizontal direction 91, and the second groove 2112 and the fourth groove 2122 both extend along the longitudinal direction 92. In any two adjacent first hollow units 211 and second hollow units 212, the orthographic projections of the first groove 2111 and the third groove 2121 on the second reference plane 94 partially overlap, and the orthographic projections of the second groove 2112 and the fourth groove 2122 on the first reference plane 93 partially overlap. With such a setting, on the one hand, the pattern 21 can be evenly distributed, and on the other hand, the pattern 21 can divide the straight line located in the plane where the metal layer 20 is located into as many line segments as possible, and the shortest connecting line not cut by the pattern 21 is as long as possible than the straight line distance between the two points, which is conducive to the full release of internal stress.

[0041] Specifically, the first groove 2111 and the second groove 2112 intersect to form a cross groove, and the third groove 2121 and the fourth groove 2122 intersect to form a cross groove. The first groove 2111 is located between two adjacent fourth grooves 2122 in the horizontal direction 91, and the third groove 2121 is located between two adjacent second grooves 2112 in the horizontal direction 91. Such a configuration can further ensure that the pattern 21 divides the straight line located in the plane where the metal layer 20 is located into as many line segments as possible, and the shortest connecting line not cut by the pattern 21 is as long as possible than the straight line distance between the two points, which is conducive to further releasing the internal stress.

[0042] In one embodiment of this implementation, please refer to Figure 6 and Figure 7 , Figure 6 is a schematic structural diagram of a metal layer 20 according to another embodiment of the present invention; Figure 7 yes Figure 6Schematic diagram of the enlarged structure of the I region of the metal layer 20. The first groove 2111 and the second groove 2112 intersect, the third groove 2121 and the fourth groove 2122 intersect, the first groove 2111 and the second groove 2112 extend in the horizontal direction 91 and the longitudinal direction 92 respectively, the third groove 2121 and the fourth groove 2122 extend in the first direction and the second direction respectively, the first direction and the second direction are perpendicular, and the first direction is relatively inclined to the horizontal direction 91. In any two adjacent first hollow units 211 and second hollow units 212, the third groove 2121 overlaps with the orthographic projection of the first groove 2111 on the second reference plane 94, the fourth groove 2122 overlaps with the orthographic projection of the first groove 2111 on the second reference plane 94, the third groove 2121 overlaps with the orthographic projection of the second groove 2112 on the first reference plane 93, and the fourth groove 2122 overlaps with the orthographic projection of the second groove 2112 on the first reference plane 93. With such a setting, on the one hand, the pattern 21 can be evenly distributed, and on the other hand, the pattern 21 can divide the straight line located in the plane where the metal layer 20 is located into as many line segments as possible, and the shortest connecting line not cut by the pattern 21 is as long as possible than the straight line distance between the two points, which is conducive to the full release of internal stress.

[0043] Specifically, the first groove 2111 and the second groove 2112 intersect to form a cross groove, and the third groove 2121 and the fourth groove 2122 intersect to form a cross groove. The angle formed by the first direction and the horizontal direction 91 is 45 degrees, and the angle formed by the second direction and the horizontal direction 91 is 45 degrees. The second hollow unit 212 is located in the area enclosed by the four first hollow units 211 in two rows and two columns. Such a setting can further ensure that the pattern 21 divides the straight line located in the plane where the metal layer 20 is located into as many line segments as possible, and the shortest connecting line not cut by the pattern 21 is as long as possible than the straight line distance between the two points, which is conducive to further releasing the internal stress.

[0044] In one embodiment of this implementation, please refer to Figure 8 and Fig. 9 , Figure 8 is a schematic structural diagram of a metal layer 20 according to another embodiment of the present invention; Fig. 9 yes Figure 8Schematic diagram of the enlarged structure of the I region of the metal layer 20. The second groove 2112 is arranged at intervals on one side of the first groove 2111 in the longitudinal direction 92, and the fourth groove 2122 is arranged at intervals on one side of the third groove 2121 in the longitudinal direction 92. The first groove 2111 and the third groove 2121 both extend in the transverse direction 91, and the second groove 2112 and the fourth groove 2122 both extend in the longitudinal direction 92. In any two adjacent first hollow units 211 and second hollow units 212, the third groove 2121 and the first groove 2111 partially overlap in the orthographic projection of the second reference plane 94, and the fourth groove 2122 and the second groove 2112 partially overlap in the orthographic projection of the first reference plane 93, and any third groove 2121 is located between two adjacent second grooves 2112 in the longitudinal direction 92, and any fourth groove 2122 is located between two adjacent fourth grooves 2122 in the transverse direction 91. With such a setting, on the one hand, the pattern 21 can be evenly distributed, and on the other hand, the pattern 21 can divide the straight line located in the plane where the metal layer 20 is located into as many line segments as possible, and the shortest connecting line not cut by the pattern 21 is as long as possible than the straight line distance between the two points, which is conducive to the full release of internal stress.

[0045] Specifically, in the horizontal direction 91, the second groove 2112 and the third groove 2121 are arranged in a cycle, and the first groove 2111 and the fourth groove 2122 are arranged in a cycle, and in the vertical direction 92, the first groove 2111 and the second groove 2112 are arranged in a cycle, and the third groove 2121 and the fourth groove 2122 are arranged in a cycle. Such an arrangement can further ensure that the pattern 21 divides the straight line located in the plane where the metal layer 20 is located into as many line segments as possible, and the shortest connecting line not cut by the pattern 21 is as long as possible than the straight line distance between the two points, which is conducive to further releasing the internal stress.

[0046] In one embodiment of this implementation, please refer to Fig.10 and Fig.11 , Fig.10 is a schematic structural diagram of a metal layer 20 according to another embodiment of the present invention; Fig.11 yes Fig.10 Schematic diagram of the enlarged structure of the I region of the metal layer 20. The first hollow unit 211 includes a fifth groove 2113 extending along the curve, and the second hollow unit 212 includes a sixth groove 2123 extending along the curve; in any two adjacent first hollow units 211 and second hollow units 212, the orthographic projections of the fifth groove 2113 and the sixth groove 2123 on the first reference plane 93 and the second reference plane 94 partially overlap. With such a setting, on the one hand, the uniform distribution of the pattern 21 can be achieved, and on the other hand, the pattern 21 can cut the straight line located in the plane where the metal layer 20 is located into as many line segments as possible, and the shortest connecting line not cut by the pattern 21 is as long as possible than the straight line distance between the two points, which is conducive to the full release of internal stress.

[0047] Specifically, the shapes of the fifth groove 2113 and the sixth groove 2123 are 180 degrees symmetrical. The shapes of the fifth groove 2113 and the sixth groove 2123 are roughly parts of an ellipse. In the longitudinal direction 92, two adjacent sixth grooves 2123 both extend into the area enclosed by the same fifth groove 2113, and two adjacent fifth grooves 2113 both extend into the area enclosed by the same sixth groove 2123. Such a setting can further ensure that the pattern 21 divides the straight line located in the plane where the metal layer 20 is located into as many line segments as possible, and the shortest connecting line not cut by the pattern 21 is as long as possible than the straight line distance between the two points, which is conducive to further releasing the internal stress.

[0048] In one embodiment of this implementation, please refer to Fig.12 and Fig.13 , Fig.12 is a schematic structural diagram of a metal layer 20 according to another embodiment of the present invention; Fig.13 yes Fig.12 Schematic diagram of the enlarged structure of the I region of the metal layer 20. The first hollow unit 211 includes a V-shaped seventh groove 2114, and the second hollow unit 212 includes a V-shaped eighth groove 2124. The opening directions of the seventh groove 2114 and the eighth groove 2124 are opposite; in any two adjacent first hollow units 211 and second hollow units 212, the orthographic projections of the seventh groove 2114 and the eighth groove 2124 on the first reference plane 93 and the second reference plane 94 are partially overlapped. With such a setting, on the one hand, the uniform distribution of the pattern 21 can be achieved, and on the other hand, the pattern 21 can cut the straight line located in the plane where the metal layer 20 is located into as many line segments as possible, and the shortest connecting line not cut by the pattern 21 is as long as possible than the straight line distance between the two points, which is conducive to the full release of internal stress.

[0049] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A method for manufacturing a screen support plate, characterized in that: include: providing a prepreg layer; Providing a metal layer and forming a pattern on the metal layer; wherein the pattern is configured to cut off any straight line in the plane where the metal layer is located; Laminating the metal layer and the prepreg layer; The stacked metal layer and the prepreg layer are heat-pressed and cured to obtain a screen support plate.

2. The method according to claim 1, characterized in that: The step of providing a metal layer and forming a pattern on the metal layer comprises: The metal layer is die-cut to form the pattern.

3. The method according to claim 2, characterized in that: The die-cutting of the metal layer to form the pattern comprises: Providing a die-cutting roller, wherein the die-cutting roller is provided with a cutter corresponding to the pattern; Providing a film material, the film material comprising a carrier film and the metal layer stacked on the top side of the carrier film; The die-cutting roller is driven to rotate so that the knife cuts through the metal layer.

4. The method according to claim 1, characterized in that: The step of laminating the metal layer and the prepreg layer comprises: Cutting the metal layer to obtain a plurality of first unit layers; Cutting the prepreg layer to obtain a plurality of second unit layers; A plurality of the first unit layers and a plurality of the second unit layers are stacked one by one respectively.

5. The method according to claim 1, characterized in that: The providing of the prepreg layer comprises: Providing multiple carbon fiber prepregs; A plurality of the carbon fiber prepregs are stacked in sequence.

6. The method according to claim 1, characterized in that: Before laminating the metal layer with the prepreg layer, the method comprises: An adhesive material is coated on the surface of the metal layer facing the prepreg layer and / or the surface of the prepreg layer facing the metal layer.

7. The manufacturing method according to claim 1, characterized in that: The pattern includes a plurality of first hollow units and a plurality of second hollow units, wherein the plurality of first hollow units and the plurality of second hollow units are respectively arranged in a vertical transverse and longitudinal array on the metal layer, and two adjacent first hollow units and the second hollow units are staggered in both the transverse and longitudinal directions.

8. The method according to claim 7, characterized in that: The first hollow unit includes a first slot and a second slot, the second hollow unit includes a third slot and a fourth slot, a plane perpendicular to the transverse direction is defined as a first reference plane, and a plane perpendicular to the longitudinal direction is defined as a second reference plane; The first groove intersects with the second groove, the third groove intersects with the fourth groove, the first groove and the third groove both extend in the transverse direction, the second groove and the fourth groove both extend in the longitudinal direction, and in any two adjacent first hollow units and the second hollow units, the orthographic projections of the first groove and the third groove on the second reference plane partially overlap, and the orthographic projections of the second groove and the fourth groove on the first reference plane partially overlap; or, The first groove intersects with the second groove, the third groove intersects with the fourth groove, the first groove and the second groove extend in the transverse direction and the longitudinal direction respectively, the third groove and the fourth groove extend in the first direction and the second direction respectively, the first direction is perpendicular to the second direction, the first direction is relatively inclined to the transverse direction, and in any two adjacent first hollow units and second hollow units, the third groove and the fourth groove respectively overlap with the orthographic projection of the first groove on the second reference plane, and the third groove and the fourth groove respectively overlap with the orthographic projection of the second groove on the first reference plane; or, The second groove is arranged at one side of the first groove in the longitudinal direction, and the fourth groove is arranged at one side of the third groove in the longitudinal direction. The first groove and the third groove both extend in the transverse direction, and the second groove and the fourth groove both extend in the longitudinal direction. In any two adjacent first hollow units and second hollow units, the third groove and the first groove partially overlap in their orthographic projection on the second reference plane, and the fourth groove and the second groove partially overlap in their orthographic projection on the first reference plane, and any third groove is located between two adjacent second grooves in the longitudinal direction, and any fourth groove is located between two adjacent fourth grooves in the transverse direction.

9. The manufacturing method according to claim 7, characterized in that: The first hollow unit includes a fifth groove extending along the curve, and the second hollow unit includes a sixth groove extending along the curve. A plane perpendicular to the transverse direction is defined as a first reference plane, and a plane perpendicular to the longitudinal direction is defined as a second reference plane. In any two adjacent first hollow units and second hollow units, the orthographic projections of the fifth groove and the sixth groove on the first reference plane and the second reference plane partially overlap.

10. The manufacturing method according to claim 7, characterized in that: The first hollow unit includes a V-shaped seventh groove, and the second hollow unit includes a V-shaped eighth groove. The opening directions of the seventh groove and the eighth groove are opposite. A plane perpendicular to the transverse direction is defined as a first reference plane, and a plane perpendicular to the longitudinal direction is defined as a second reference plane. In any two adjacent first hollow units and second hollow units, the orthographic projections of the seventh groove and the eighth groove on the first reference plane and the second reference plane partially overlap.

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