Circuit board and electronic equipment

Abstract

The embodiment of the utility model relates to the technical field of electronics, in particular to a circuit board and electronic equipment. The embodiment of the utility model aims to solve the problem that the flexible circuit board is easily damaged by pulling force of two printed circuit boards. According to the circuit board provided by the embodiment, the second printed circuit board and the first printed circuit board are arranged at an interval, one end of the flexible circuit board is connected with the first printed circuit board, the other end of the flexible circuit board is connected with the second printed circuit board, and the rigid limiting piece is connected with the first printed circuit board and the second printed circuit board. The rigid limiting piece is used for preventing the second printed circuit board from moving relative to the first printed circuit board so as to prevent the first printed circuit board and the second printed circuit board from pulling the flexible circuit board, and then the flexible circuit board is prevented from being damaged by pulling force.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electronic technology, and specifically to a circuit board and an electronic device. Background Art

[0002] Printed circuit boards (PCBs) are carriers of electronic components and are widely used in electronic products such as mobile phones and computers. In electronic devices, two printed circuit boards can be connected through a flexible circuit board to achieve electrical connection between the two printed circuit boards. However, during assembly or use, the flexible circuit board is easily damaged by the tension of the two printed circuit boards. Utility Model Content

[0003] The embodiments of the present application provide a circuit board and an electronic device, which can prevent a flexible circuit board from being damaged by the pulling force of a printed circuit board.

[0004] In a first aspect, an embodiment of the present application provides a circuit board, comprising: a first printed circuit board, a second printed circuit board, a flexible circuit board, and a rigid stopper. The first printed circuit board and the second printed circuit board are spaced apart from each other. One end of the flexible circuit board is connected to the first printed circuit board, and the other end of the flexible circuit board is connected to the second printed circuit board to electrically connect the first printed circuit board and the second printed circuit board. One end of the rigid stopper is connected to the first printed circuit board, and the other end of the rigid stopper is connected to the second printed circuit board to prevent the second printed circuit board from moving relative to the first printed circuit board.

[0005] Through the above arrangement, the rigid limiter can prevent the first printed circuit board and the second printed circuit board from pulling the flexible circuit board, thereby preventing the flexible circuit board from being damaged by tension, and preventing failure of the connection between the flexible circuit board and the first printed circuit board and the second printed circuit board.

[0006] In some embodiments that may include the above embodiments, the first printed circuit board is provided with a first surface, the second printed circuit board is provided with a second surface, and the first surface and the second surface are coplanar. One end of the flexible circuit board is connected to the first surface, and the other end of the flexible circuit board is connected to the second surface. One end of the rigid stopper is connected to the first surface, and the other end of the rigid stopper is connected to the second surface.

[0007] Through the above arrangement, the rigid limiting member is connected to the first surface and the second surface respectively to prevent the second printed circuit board from moving relative to the first printed circuit board.

[0008] In some embodiments that may include the above embodiments, the rigid limiter has a first limiter and a second limiter, and the first limiter and the second limiter are connected. The first limiter is used to connect with the first printed circuit board, and the first printed circuit board and the second limiter are respectively located at two ends of the first limiter. The second limiter is used to connect with the second printed circuit board, and the second printed circuit board and the first limiter are respectively located at two ends of the second limiter. The length direction of the first limiter is perpendicular to the length direction of the second limiter.

[0009] Through the above arrangement, the rigid limiting component can connect the first printed circuit board and the second printed circuit board which are spaced far apart, so as to prevent the second printed circuit board from moving relative to the first printed circuit board.

[0010] In some embodiments that may include the above embodiments, the first surface has a first side and a second side, the first side and the second side are arranged adjacent to each other, and the length of the first side is greater than the length of the second side. The second surface has a third side and a fourth side, the third side and the fourth side are arranged adjacent to each other, and the length of the third side is greater than the length of the fourth side. The first side is perpendicular to the third side.

[0011] Through the above arrangement, the length direction of the first printed circuit board is perpendicular to the length direction of the second printed circuit board.

[0012] In some embodiments that may include the above embodiments, the first printed circuit board has a first surface and a third surface, and the first surface and the third surface are arranged opposite to each other. The second printed circuit board has a second surface and a fourth surface, and the second surface and the fourth surface are arranged opposite to each other. The first surface and the second surface are arranged in the same direction, and the first surface is parallel to the second surface. The rigid stopper connects the first surface and the second surface. The flexible circuit board connects the third surface and the second surface.

[0013] Through the above arrangement, the rigid stopper can connect the first printed circuit board and the second printed circuit board spaced apart in a direction perpendicular to the first surface to prevent the second printed circuit board from moving relative to the first printed circuit board and avoid the flexible circuit board from being damaged by tension.

[0014] In some embodiments that may include the above embodiments, the rigid limiter has a first limiter and a second limiter, and the first limiter and the second limiter are connected. The first limiter is used to connect with the first surface, and the first surface and the second limiter are respectively located at two ends of the first limiter. The second limiter is used to connect with the second surface, and the second surface and the first limiter are respectively located at two ends of the second limiter. The length direction of the first limiter is parallel to the length direction of the second limiter.

[0015] Through the above arrangement, the rigid stopper can connect the first printed circuit board and the second printed circuit board spaced apart in a direction perpendicular to the first surface to prevent the second printed circuit board from moving relative to the first printed circuit board and avoid the flexible circuit board from being damaged by tension.

[0016] In some embodiments that may include the above-mentioned embodiments, the rigid limiting member also has a third limiting portion, one end of the third limiting portion is connected to the first limiting portion, the other end of the third limiting portion is connected to the second limiting portion, and the length direction of the third limiting portion is perpendicular to the length direction of the first limiting portion and the length direction of the second limiting portion.

[0017] Through the above arrangement, the rigid stopper can connect the first printed circuit board and the second printed circuit board spaced apart in a direction perpendicular to the first surface to prevent the second printed circuit board from moving relative to the first printed circuit board and avoid the flexible circuit board from being damaged by tension.

[0018] In some embodiments that may include the above embodiments, the material of the rigid stopper may include metal, and the rigid stopper is welded on the first printed circuit board and the second printed circuit board. Through the above arrangement, the volume of the rigid stopper is reduced, thereby reducing the occupied space of the circuit board in the embodiment of the present application.

[0019] In some embodiments that may include the above embodiments, in a plane parallel to the first printed circuit board, the projection of the rigid stopper is spaced apart from the projection of the flexible printed circuit board. Through the above arrangement, the size of the circuit board in the embodiment of the present application in a direction perpendicular to the first printed circuit board is reduced.

[0020] In some embodiments that may include the above embodiments, the rigid stopper is bonded to the first printed circuit board and the second printed circuit board by adhesive. Through the above arrangement, the difficulty of assembling the rigid stopper and the first printed circuit board and the second printed circuit board is reduced, the assembly process is reduced, the circuit board is prevented from being damaged during the welding process, and the requirement for the high temperature resistance of the circuit board is reduced.

[0021] In some embodiments that may include the above embodiments, in a plane parallel to the first printed circuit board, the projection of the rigid stopper and the projection of the flexible circuit board at least partially overlap. Through the above arrangement, the area of ​​the first printed circuit board and the second printed circuit board blocked by the rigid stopper and the flexible circuit board is reduced, and at the same time, the size of the circuit board in the embodiment of the present application in the direction parallel to the first printed circuit board is reduced.

[0022] In some embodiments that may include the above embodiments, the rigid stopper is made of non-metallic material. Through the above arrangement, the weight of the circuit board in the embodiment of the present application is reduced.

[0023] In some embodiments that may include the above embodiments, the limiting plate is plate-shaped, and at least part of the limiting plate is parallel to the first printed circuit board. Through the above arrangement, the volume of the rigid limiting member is reduced, and at the same time, the connection area between the rigid limiting member and the first printed circuit board is increased.

[0024] In some embodiments that may include the above embodiments, the flexible circuit board is soldered to the first printed circuit board and the second printed circuit board. Through the above arrangement, the assembly cost is reduced.

[0025] In a second aspect, an embodiment of the present application provides an electronic device, comprising: a housing, and a circuit board of any of the above embodiments, wherein the circuit board is housed in the housing. Through the above arrangement, the rigid stopper prevents the second printed circuit board from moving relative to the first printed circuit board, so as to prevent the first printed circuit board and the second printed circuit board from pulling the flexible circuit board during the assembly, transportation or use of the electronic device, and to prevent the flexible circuit board from being cracked and damaged due to tension. At the same time, the connection failure between the flexible circuit board and the first printed circuit board and the second printed circuit board is prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of the circuit board provided in the embodiment of the present application Figure 1 ;

[0027] Figure 2 for Figure 1 The side view of the circuit board provided by the embodiment of the present application is shown Figure 1 ;

[0028] Figure 3 for Figure 1 The side view of the circuit board provided by the embodiment of the present application is shown Figure 2 ;

[0029] Figure 4 Schematic diagram of the structure of the flexible circuit board, the first printed circuit board and the second printed circuit board in the circuit board provided in the embodiment of the present application Figure 1 ;

[0030] Figure 5 for Figure 4 A side view of a flexible circuit board, a first printed circuit board, and a second printed circuit board in a circuit board provided by an embodiment of the present application is shown;

[0031] Figure 6 A schematic diagram of the structure of a flexible circuit board, a first printed circuit board, a second printed circuit board and a support layer in a circuit board provided in an embodiment of the present application;

[0032] Figure 7 for Figure 6A side view of a flexible circuit board, a first printed circuit board, a second printed circuit board and a support layer in a circuit board provided by an embodiment of the present application is shown;

[0033] Figure 8 Schematic diagram of the structure of the flexible circuit board, the first printed circuit board and the second printed circuit board in the circuit board provided in the embodiment of the present application Figure 2 ;

[0034] Fig. 9 for Figure 8 A side view of a flexible circuit board, a first printed circuit board, and a second printed circuit board in a circuit board provided by an embodiment of the present application is shown;

[0035] Fig.10 A schematic diagram of the structure of the circuit board provided in the embodiment of the present application Figure 2 ;

[0036] Fig.11 for Fig.10 A top view of a circuit board provided in an embodiment of the present application is shown;

[0037] Fig.12 A schematic diagram of the structure of the circuit board provided in the embodiment of the present application Figure 3 ;

[0038] Fig.13 for Fig.12 A side view of a circuit board provided by an embodiment of the present application is shown;

[0039] Fig.14 A schematic diagram of the structure of the circuit board provided in the embodiment of the present application Figure 4 ;

[0040] Fig.15 for Fig.14 A side view of a circuit board provided by an embodiment of the present application is shown;

[0041] Fig.16 A schematic diagram of the structure of the circuit board provided in the embodiment of the present application Figure 5 ;

[0042] Fig.17 for Fig.16 A side view of a circuit board provided by an embodiment of the present application is shown.

[0043] Description of reference numerals:

[0044] 100: first printed circuit board; 110: first surface; 111: first side; 112: second side; 120: third surface; 200: second printed circuit board; 210: second surface; 211: third side; 212: fourth side; 220: fourth surface; 300: flexible circuit board; 310: first connection surface; 320: second connection surface; 400: rigid limiter; 410: first limiter; 420: second limiter; 430: third limiter; 500: first connection layer; 600: second connection layer; 700: board-to-board connector; 800: supporting layer. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] Please refer to Figure 1 and Figure 2 , the embodiment of the present application provides a circuit board, the circuit board includes a first printed circuit board 100, the first printed circuit board 100 has a first surface 110 and a third surface 120. The first surface 110 is arranged opposite to the third surface 120, and the first surface 110 and the third surface 120 are respectively arranged on both sides of the first printed circuit board 100. The first surface 110 may be parallel to the third surface 120. In the embodiment where the first surface 110 is parallel to the third surface 120, the distance dimension between the first surface 110 and the third surface 120 is the thickness dimension of the first printed circuit board 100. The first surface 110 and the third surface 120 may have the same shape. In some implementations, the first surface 110 and the third surface 120 may be rectangular, circular or irregular. In some implementations, the material of the first printed circuit board 100 may include at least one of a copper clad laminate, an epoxy glass cloth laminate and ceramics. In some implementations, the first printed circuit board 100 may include any one of a single-sided board, a double-sided board and a multi-layer circuit board.

[0047] Please refer to Figure 1 and Figure 2, the circuit board of the embodiment of the present application further includes a second printed circuit board 200, and the second printed circuit board 200 has a second surface 210 and a fourth surface 220. The second surface 210 is arranged opposite to the fourth surface 220, and the second surface 210 and the fourth surface 220 are respectively arranged on both sides of the second printed circuit board 200. The second surface 210 can be parallel to the fourth surface 220. In the embodiment where the second surface 210 is parallel to the fourth surface 220, the distance dimension between the second surface 210 and the fourth surface 220 is the thickness dimension of the second printed circuit board 200. In some implementations, the thickness of the second printed circuit board 200 can be greater than, equal to, or less than the thickness of the first printed circuit board 100, and the embodiment of the present application is not limited to this. The second surface 210 and the fourth surface 220 can have the same shape. In some implementations, the second surface 210 and the fourth surface 220 can both be rectangular, circular, or irregular. The second surface 210 can have the same shape as the first surface 110. In some implementations, the material of the second printed circuit board 200 may include at least one of copper clad laminate, epoxy glass cloth laminate and ceramic. In some implementations, the second printed circuit board 200 may include at least one of single-sided board, double-sided board and multi-layer circuit board.

[0048] Please refer to Figure 1 and Figure 2 In the embodiment of the present application, the second printed circuit board 200 is spaced apart from the first printed circuit board 100. The second printed circuit board 200 may be parallel to the first printed circuit board 100. In some implementations, two of the first surface 110, the second surface 210, the third surface 120, and the fourth surface 220 located on the same side may be located in the same plane. Exemplarily, the first surface 110 and the second surface 210 face the same direction, and the first surface 110 and the second surface 210 are located in the same plane; and / or, the third surface 120 and the fourth surface 220 face the same direction, and the third surface 120 and the fourth surface 220 are located in the same plane. In other implementations, two of the first surface 110, the second surface 210, the third surface 120, and the fourth surface 220 located on the same side may be spaced apart. Exemplarily, the first surface 110 and the second surface 210 face the same direction, and the first surface 110 and the second surface 210 are spaced apart in a direction perpendicular to the first surface 110; and / or, the third surface 120 and the fourth surface 220 face the same direction, and the third surface 120 and the fourth surface 220 are spaced apart.

[0049] Please refer to Figure 1 and Figure 3, the circuit board of the embodiment of the present application further includes a flexible circuit board 300, and the flexible circuit board 300 has a first connection surface 310 and a second connection surface 320. The first connection surface 310 is arranged opposite to the second connection surface 320, and the first connection surface 310 and the second connection surface 320 are respectively arranged on both sides of the flexible circuit board 300. The distance dimension between the first connection surface 310 and the second connection surface 320 is the thickness dimension of the flexible circuit board 300. In some implementations, the thickness of the flexible circuit board 300 can be 0.1mm-0.2mm. The flexible circuit board 300 has a length direction and a width direction, and the direction from one end of the flexible circuit board 300 to the other end of the flexible circuit board 300 is the length direction of the flexible circuit board 300, and the width direction of the flexible circuit board 300 is parallel to the flexible circuit board 300 and perpendicular to the length direction of the flexible circuit board 300. The flexible circuit board 300 can be bent around an axis extending along the width direction of the flexible circuit board 300. In some implementations, the material made of the flexible circuit board 300 may include at least one of polyimide and polyester film.

[0050] Please refer to Figure 1 In the embodiment of the present application, the first printed circuit board 100 and the second printed circuit board 200 are arranged at intervals along the length direction of the flexible circuit board 300, one end of the flexible circuit board 300 is used to connect with the first printed circuit board 100, and the other end of the flexible circuit board 300 is used to connect with the second printed circuit board 200, so as to electrically connect the first printed circuit board 100 and the second printed circuit board 200. Through the above arrangement, the first printed circuit board 100 and the second printed circuit board 200 in the circuit board of the embodiment of the present application are rigid and have high durability; the flexible circuit board 300 in the circuit board of the embodiment of the present application is flexible and has bendability and flexibility. The flexible circuit board 300 connects the first printed circuit board 100 and the second printed circuit board 200, so that the circuit board of the embodiment of the present application has both high durability and bendability.

[0051] Please refer to Figure 4 and Figure 5 In an optional embodiment, one end of the flexible circuit board 300 is embedded in the first printed circuit board 100, and then connected to the first printed circuit board 100, and the other end of the flexible circuit board 300 is embedded in the second printed circuit board 200, and then connected to the second printed circuit board 200. The step of embedding the flexible circuit board 300 in the first printed circuit board 100 and the second printed circuit board 200 may include:

[0052] A first copper clad laminate, a second copper clad laminate, a third copper clad laminate and a fourth copper clad laminate are provided; one end of a flexible circuit board 300 is stacked between the first copper clad laminate and the second copper clad laminate, and the other end of the flexible circuit board 300 is stacked between the third copper clad laminate and the fourth copper clad laminate; the first copper clad laminate and the second copper clad laminate are pressed together so that the first copper clad laminate and the second copper clad laminate form a first printed circuit board 100, and at the same time, one end of the flexible circuit board 300 is embedded in the first printed circuit board 100; the third copper clad laminate and the fourth copper clad laminate are pressed together so that the third copper clad laminate and the fourth copper clad laminate form a second printed circuit board 200, and at the same time, the other end of the flexible circuit board 300 is embedded in the second printed circuit board 200; a via hole connected to the flexible circuit board 300 is opened on the first printed circuit board 100 and the second printed circuit board 200; copper is plated on the hole wall of the via hole; a protective layer having the same shape as the pattern circuit is formed on the first printed circuit board 100 and the second printed circuit board 200; and the copper layer not covered by the protective layer is removed by etching.

[0053] Please refer to Figure 6 and Figure 7 In an optional embodiment, the flexible circuit board 300 is connected to the first printed circuit board 100 and the second printed circuit board 200 through a board-to-board connector 700 (Board-to-board Connectors, referred to as BTB). The first printed circuit board 100 and the second printed circuit board 200 are both arranged on a support layer 800, and the support layer 800 is used to support the first printed circuit board 100 and the second printed circuit board 200 to avoid the first printed circuit board 100 and the second printed circuit board 200 being deformed and damaged during the installation of the flexible circuit board 300. In the above embodiment, the size of the circuit board of the embodiment of the present application in the direction perpendicular to the first printed circuit board 100 can be 0.6mm-2.0mm. Exemplarily, the size of the circuit board of the embodiment of the present application in the direction perpendicular to the first printed circuit board 100 is 0.6mm, 0.7mm, 0.8mm, 1.0mm, 1.5mm or 2.0mm. In some implementations, the material of the support layer 800 may include metal.

[0054] Please refer to Figure 8 and Fig. 9In the embodiment of the present application, the flexible circuit board 300 is welded to the first printed circuit board 100 and the second printed circuit board 200. A first connection layer 500 is provided between the flexible circuit board 300 and the first printed circuit board 100 and the second printed circuit board 200. The first connection layer 500 is used to connect the flexible circuit board 300 and the first printed circuit board 100, and to connect the flexible circuit board 300 and the second printed circuit board 200. The first connection layer 500 may include solder. In some implementations, the material of the first connection layer 500 may include at least one of tin, tin-lead alloy, silver-lead-tin alloy, and silver-copper-tin alloy. It can be understood that the welding cost is low, which is conducive to promotion, and the use of the board-to-board connector 700 and the support layer 800 is avoided to reduce the size of the circuit board in the embodiment of the present application in the direction perpendicular to the first printed circuit board 100, thereby reducing the occupied space. At the same time, the support layer 800 is avoided from covering the first printed circuit board 100 and the second printed circuit board 200, thereby improving the utilization rate of the first printed circuit board 100 and the second printed circuit board 200.

[0055] Please refer to Figure 1 and Figure 2 The circuit board of the embodiment of the present application further includes a rigid stopper 400, one end of which is connected to the first printed circuit board 100, and the other end of which is connected to the second printed circuit board 200. The rigid stopper 400 has a certain rigidity. During normal assembly, transportation or use, the rigid stopper 400 will not bend, stretch or twist under the action of external force, so as to prevent the second printed circuit board 200 from moving relative to the first printed circuit board 100 and prevent the flexible circuit board 300 from being damaged by tension.

[0056] In the circuit board provided in the embodiment of the present application, the second printed circuit board 200 is arranged to be spaced apart from the first printed circuit board 100, one end of the flexible circuit board 300 is connected to the first printed circuit board 100, and the other end of the flexible circuit board 300 is connected to the second printed circuit board 200, so as to electrically connect the first printed circuit board 100 and the second printed circuit board 200, and the rigid stopper 400 connects the first printed circuit board 100 and the second printed circuit board 200, and the rigid stopper 400 is used to prevent the second printed circuit board 200 from moving relative to the first printed circuit board 100, so as to prevent the first printed circuit board 100 and the second printed circuit board 200 from pulling the flexible circuit board 300, and to prevent the flexible circuit board 300 from being subjected to tension or force along the width direction of the flexible circuit board 300 and being cracked and damaged. The rigid stopper 400 is also used to prevent the flexible circuit board 300 from moving relative to the first printed circuit board 100 and the second printed circuit board 200, so as to prevent the connection between the flexible circuit board 300 and the first printed circuit board 100 or the second printed circuit board 200 from failing.

[0057] Please refer to Figure 1 The rigid stopper 400 is spaced apart from the flexible circuit board 300 to prevent damage to the flexible circuit board 300. The rigid stopper 400 may extend in a straight line, and the extending direction of the rigid stopper 400 may be parallel to the length direction of the flexible circuit board 300 (eg Figure 1 parallel to the horizontal direction in the orientation shown).

[0058] Please refer to Figure 1 and Figure 2 In the embodiment of the present application, the rigid stopper 400 is in the shape of a plate. At least part of the rigid stopper 400 is parallel to the first printed circuit board 100. For example, part of the rigid stopper 400 connected to the first printed circuit board 100 is parallel to the first printed circuit board 100, so as to increase the connection area between the rigid stopper 400 and the first printed circuit board 100, and improve the connection strength between the rigid stopper 400 and the first printed circuit board 100, so as to better prevent the second printed circuit board 200 from moving relative to the first printed circuit board 100. At least part of the rigid stopper 400 is parallel to the second printed circuit board 200. For example, part of the rigid stopper 400 connected to the second printed circuit board 200 can be parallel to the second printed circuit board 200, so as to increase the connection area between the rigid stopper 400 and the second printed circuit board 200, and improve the connection strength between the rigid stopper 400 and the second printed circuit board 200, so as to prevent the second printed circuit board 200 from moving relative to the first printed circuit board 100. In some implementations, the length of the rigid stopper 400 may be greater than, equal to, or less than the length of the flexible circuit board 300; the width of the rigid stopper 400 may be greater than, equal to, or less than the width of the flexible circuit board 300; the thickness of the rigid stopper 400 may be greater than, equal to, or less than the thickness of the flexible circuit board 300. The embodiment of the present application does not limit the size of the rigid stopper 400.

[0059] Please refer to Figure 1 and Figure 2 In the embodiment of the present application, a second connection layer 600 is provided between the rigid limiter 400 and the first printed circuit board 100 and the second printed circuit board 200. The second connection layer 600 is used to connect the rigid limiter 400 and the first printed circuit board 100, and to connect the rigid limiter 400 and the second printed circuit board 200.

[0060] Please refer to Figure 1 and Figure 2In an optional embodiment, the second connection layer 600 may include solder, the material of the rigid stopper 400 may include metal, one end of the rigid stopper 400 is welded to the first printed circuit board 100, and the other end of the rigid stopper 400 is welded to the second printed circuit board 200. It can be understood that due to the high density of metal, the rigid stopper 400 is a metal part, which can reduce the volume of the rigid stopper 400, thereby reducing the occupied space of the circuit board of the embodiment of the present application. In some implementations, the rigid stopper 400 can be installed on the first printed circuit board 100 and the second printed circuit board 200 by electronic circuit surface assembly technology (Surface Mount Technology, referred to as SMT), and the steps of the electronic circuit surface assembly technology include laser welding or reflow soldering. In some implementations, the material of the rigid stopper 400 may include at least one of steel, aluminum and other metals. In the embodiment where the rigid stopper 400 is made of steel, due to the mature steelmaking process, low price, and relatively high steel strength, the above embodiment can reduce costs and reduce the probability of damage to the rigid stopper 400. In some implementations, the material of the second connection layer 600 may include at least one of tin, tin-lead alloy, silver-lead-tin alloy, and silver-copper-tin alloy. In some implementations, the thickness of the second connection layer 600 may be 0.05 mm.

[0061] Please refer to Figure 1 In an optional embodiment, in a plane parallel to the first printed circuit board 100, the projection of the rigid stopper 400 is spaced from the projection of the flexible printed circuit board 300. Through the above arrangement, the size of the circuit board in the direction perpendicular to the first printed circuit board 100 in the embodiment of the present application is reduced.

[0062] Please refer to Fig.10 In an optional embodiment, the second connection layer 600 may include adhesive, and the rigid stopper 400 is connected to the first printed circuit board 100 and the second printed circuit board 200 through the adhesive. In some implementations, the material of the adhesive may include epoxy resin adhesive or polyurethane adhesive. Through the above arrangement, the difficulty of assembling the rigid stopper 400 and the first printed circuit board 100 and the second printed circuit board 200 is reduced, the assembly process is reduced, the circuit board is prevented from being damaged during the welding process, and the requirement for the high temperature resistance of the circuit board is reduced.

[0063] Please refer to Fig.10 and Fig.11In the embodiment where the rigid stopper 400 is connected to the first printed circuit board 100 and the second printed circuit board 200 by adhesive, the projection of the rigid stopper 400 and the projection of the flexible circuit board 300 may at least partially overlap in a plane parallel to the first printed circuit board 100. It is understandable that the thickness of the second connection layer 600 may be increased by increasing the amount of adhesive, so as to increase the spacing distance between the rigid stopper 400 and the first printed circuit board 100, so that the rigid stopper 400 and the flexible circuit board 300 are spaced in a direction perpendicular to the first printed circuit board 100, and the projection of the rigid stopper 400 and the projection of the flexible circuit board 300 at least partially overlap. Through the above arrangement, the area of ​​the rigid stopper 400 and the flexible circuit board 300 shielding the first printed circuit board 100 and the second printed circuit board 200 is reduced, and at the same time, the size of the circuit board in the embodiment of the present application in the direction parallel to the first printed circuit board 100 is reduced. In some implementations, the thickness of the second connection layer 600 may be greater than 0.1 mm.

[0064] Please refer to Fig.10 In the embodiment where the rigid limiter 400 is connected to the first printed circuit board 100 and the second printed circuit board 200 by adhesive, the rigid limiter 400 includes a non-metallic part, and the material of the rigid limiter 400 may include at least one of hard plastics such as epoxy resin, amino resin, phenolic resin, etc.

[0065] Please refer to Figure 1 and Figure 2 In an embodiment in which the first surface 110 and the second surface 210 are located in the same plane, the first surface 110 and the second surface 210 are located on the same side, the first connection surface 310 of the flexible circuit board 300 is connected to the first surface 110 and the second surface 210, and the rigid stopper 400 is connected to the first surface 110 and the second surface 210 to prevent the second printed circuit board 200 from moving relative to the first printed circuit board 100, so as to prevent the flexible circuit board 300 from being damaged by tension. The rigid stopper 400 extends in a direction parallel to the first surface 110 to connect the first surface 110 and the second surface 210. The flexible circuit board 300 extends in a direction parallel to the first surface 110. The flexible circuit board 300 and the rigid stopper 400 are located on the same side, which reduces the size of the circuit board in the direction perpendicular to the first printed circuit board 100 of the embodiment of the present application.

[0066] Please refer to Fig.12 and Fig.13In an optional embodiment, the rigid stopper 400 includes a first stopper 410 and a second stopper 420, and the first stopper 410 and the second stopper 420 are both parallel to the first surface 110. The first stopper 410 and the second stopper 420 can both extend in a straight line. One end of the first stopper 410 is connected to the first printed circuit board 100, the other end of the first stopper 410 is connected to one end of the second stopper 420, and the other end of the second stopper 420 is connected to the second printed circuit board 200, so as to connect the first printed circuit board 100 and the second printed circuit board 200, thereby preventing the second printed circuit board 200 from moving relative to the first printed circuit board 100, and preventing the flexible circuit board 300 from being damaged by tension. The length direction of the first stopper 410 is perpendicular to the length direction of the second stopper 420, so as to connect the first printed circuit board 100 and the second printed circuit board 200 which are far apart. In other implementations, the angle between the length direction of the first stopper 410 and the length direction of the second stopper 420 can include other angles.

[0067] Please refer to Fig.12 and Fig.13 In the above embodiment, the first surface 110 and the second surface 210 are both rectangular. The first surface 110 includes adjacent first side edges 111 and second side edges 112, the length of the first side edges 111 is greater than the length of the second side edges 112, and the extension direction of the first side edges 111 is the length direction of the first printed circuit board 100. The second surface 210 includes adjacent third side edges 211 and fourth side edges 212, the length of the third side edges 211 is greater than the length of the fourth side edges 212, and the extension direction of the third side edges 211 is the length direction of the second printed circuit board 200. The first side edges 111 are perpendicular to the third side edges 211, that is, the length direction of the first printed circuit board 100 is perpendicular to the length direction of the second printed circuit board 200. The second side edges 112 and the third side edges 211 are arranged opposite to each other, and the flexible circuit board 300 covers at least a portion of the second side edges 112 and at least a portion of the third side edges 211. The second side 112 is perpendicular to the fourth side 212 . The first limiting portion 410 covers at least a portion of the second side 112 , and the second limiting portion 420 covers at least a portion of the fourth side 212 .

[0068] Please refer to Figures 14 to 17In an embodiment in which the first surface 110 and the second surface 210 are located on the same side and the first surface 110 and the second surface 210 are spaced apart in a direction perpendicular to the first surface 110, the second surface 210 and the third surface 120 are spaced apart in a direction perpendicular to the first surface 110, and the second surface 210 is disposed close to the third surface 120. The rigid stopper 400 is connected to the first surface 110 and the second surface 210 to connect the first printed circuit board 100 and the second printed circuit board 200 to prevent the second printed circuit board 200 from moving relative to the first printed circuit board 100. The first connection surface 310 of the flexible circuit board 300 is connected to the second surface 210, and the second connection surface 320 of the flexible circuit board 300 is connected to the third surface 120 to shorten the length of the flexible circuit board 300 between the first printed circuit board 100 and the second printed circuit board 200, thereby reducing the risk of damage to the flexible circuit board 300. In some implementations, the flexible circuit board 300 may be parallel to the first surface 110.

[0069] In the above embodiment, the rigid stopper 400 includes a first stopper 410 and a second stopper 420, and the first stopper 410 and the second stopper 420 can both extend in a straight line. One end of the first stopper 410 is connected to the first surface 110, the other end of the first stopper 410 is connected to one end of the second stopper 420, and the other end of the second stopper 420 is connected to the second surface 210, so as to prevent the second printed circuit board 200 from moving relative to the first printed circuit board 100, and prevent the flexible circuit board 300 from being damaged by tension.

[0070] Please refer to Fig.14 and Fig.15 In some implementations, the length direction of the first limiting portion 410 is perpendicular to the length direction of the second limiting portion 420. The first limiting portion 410 is arranged parallel to the first surface 110, and in a plane parallel to the first surface 110, the projection of the first limiting portion 410 and the projection of the second surface 210 at least partially overlap. The second limiting portion 420 is arranged perpendicular to the second surface 210. In other implementations, the angle between the length direction of the first limiting portion 410 and the length direction of the second limiting portion 420 may include other angles.

[0071] Please refer to Fig.16 and Fig.17In some implementations, the length direction of the first limiting portion 410 is parallel to the length direction of the second limiting portion 420. The first limiting portion 410 is arranged parallel to the first surface 110, and in a plane parallel to the first surface 110, the projection of the first limiting portion 410 and the projection of the second surface 210 may at least partially overlap. The second limiting portion 420 is arranged parallel to the second surface 210 to increase the connection area with the second surface 210, thereby better preventing the second printed circuit board 200 from moving relative to the first printed circuit board 100, and preventing the flexible circuit board 300 from being damaged by tension.

[0072] Please refer to Fig.17 In the above embodiment, the rigid stopper 400 further includes a third stopper 430, one end of the third stopper 430 is connected to the first stopper 410, and the other end of the third stopper 430 is connected to the second stopper 420, so as to connect the first stopper 410 and the second stopper 420. The length direction of the third stopper 430 may be perpendicular to the length direction of the first stopper 410. In some implementations, the angle between the length direction of the third stopper 430 and the length direction of the first stopper 410 may include other angles.

[0073] An embodiment of the present application provides an electronic device, which includes a housing and a circuit board of any of the above embodiments, and the circuit board is accommodated in the housing. The electronic device provided in the embodiment of the present application, the housing is used to accommodate the circuit board, the circuit board includes a first printed circuit board 100, a second printed circuit board 200, a flexible circuit board 300 and a rigid stopper 400, the first printed circuit board 100 and the second printed circuit board 200 are arranged to be spaced apart, the flexible circuit board 300 is used to connect the first printed circuit board 100 and the second printed circuit board 200, the rigid stopper 400 connects the first printed circuit board 100 and the second printed circuit board 200, and the rigid stopper 400 is used to prevent the second printed circuit board 200 from moving relative to the first printed circuit board 100, so as to prevent the first printed circuit board 100 and the second printed circuit board 200 from pulling the flexible circuit board 300 during the assembly, transportation or use of the electronic device, and to prevent the flexible circuit board 300 from being subjected to tension or force along the width direction of the flexible circuit board 300 and cracking and damage. The rigid stopper 400 is also used to prevent the flexible circuit board 300 from moving relative to the first printed circuit board 100 and the second printed circuit board 200 to avoid failure of the connection between the flexible circuit board 300 and the first printed circuit board 100 or the second printed circuit board 200 during assembly, transportation or use of the electronic device.

[0074] It should be noted that in the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or an integral connection; it can also be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A circuit board, characterized in that: include: a first printed circuit board; a second printed circuit board, the second printed circuit board being spaced apart from the first printed circuit board; a flexible circuit board, one end of which is connected to the first printed circuit board, and the other end of which is connected to the second printed circuit board; A rigid stopper is connected to the first printed circuit board and the second printed circuit board, and is used to prevent the second printed circuit board from moving relative to the first printed circuit board.

2. The circuit board according to claim 1, characterized in that: The first printed circuit board has a first surface, the second printed circuit board has a second surface, and the first surface and the second surface are located in the same plane; The flexible circuit board and the rigid limiting component are both connected to the first surface and the second surface.

3. The circuit board according to claim 2, characterized in that: The rigid limiting member includes a first limiting portion and a second limiting portion, one end of the first limiting portion is connected to the first printed circuit board, the other end of the first limiting portion is connected to one end of the second limiting portion, and the other end of the second limiting portion is connected to the second printed circuit board; The length direction of the first limiting portion is perpendicular to the length direction of the second limiting portion.

4. The circuit board according to claim 3, characterized in that: The first surface comprises a first side edge and a second side edge adjacent to each other, wherein the length of the first side edge is greater than the length of the second side edge; The second surface includes a third side and a fourth side that are adjacent to each other, and the length of the third side is greater than the length of the fourth side; The first side is perpendicular to the third side.

5. The circuit board according to claim 1, characterized in that: The first printed circuit board has a first surface and a third surface that are opposite to each other, and the second printed circuit board has a second surface and a fourth surface that are opposite to each other; The first surface and the second surface are located on the same side, and the first surface and the second surface are spaced apart from each other in a direction perpendicular to the first surface; The rigid limiting member is connected to the first surface and the second surface; The flexible circuit board is connected to the third surface and the second surface.

6. The circuit board according to claim 5, characterized in that: The rigid limiting member includes a first limiting portion and a second limiting portion, one end of the first limiting portion is connected to the first surface, the other end of the second limiting portion is connected to one end of the second limiting portion, and the other end of the second limiting portion is connected to the second surface; The length direction of the first limiting portion is parallel to the length direction of the second limiting portion.

7. The circuit board according to claim 6, characterized in that: The rigid limiting component further includes a third limiting portion, the third limiting portion connects the first limiting portion and the second limiting portion, and the length direction of the third limiting portion is perpendicular to the length direction of the first limiting portion.

8. The circuit board according to any one of claims 1 to 7, characterized in that: The rigid limiting component is a metal component, and the rigid limiting component is welded to both the first printed circuit board and the second printed circuit board.

9. The circuit board according to claim 8, characterized in that: In a plane parallel to the first printed circuit board, a projection of the rigid limiting member is spaced apart from a projection of the flexible circuit board.

10. The circuit board according to any one of claims 1 to 7, characterized in that: The rigid limiting component is connected to the first printed circuit board and the second printed circuit board by adhesive.

11. The circuit board according to claim 10, characterized in that: In a plane parallel to the first printed circuit board, a projection of the rigid stopper at least partially overlaps with a projection of the flexible circuit board.

12. The circuit board according to claim 10, characterized in that: The rigid limiting component includes a non-metallic component.

13. The circuit board according to any one of claims 1 to 7, characterized in that: The rigid limiting member is plate-shaped, and at least a portion of the rigid limiting member is parallel to the first printed circuit board.

14. The circuit board according to any one of claims 1 to 7, characterized in that: The flexible circuit board is welded to both the first printed circuit board and the second printed circuit board.

15. An electronic device, characterized in that: It comprises: a shell, and the circuit board according to any one of claims 1 to 14, wherein the circuit board is accommodated in the shell.

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