Foldable flexible display driving circuit board
Patent Information
- Application Number
- CN202521829493.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-27
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-08-27
AI Technical Summary
[0005]为此，本实用新型的一个目的在于提出一种可折叠柔性显示驱动电路板，以解决背景技术中所提到的问题，克服现有技术中存在的不足
1、减少柔性电排所受拉力以提升其耐用性时，具体操作步骤为：将第一电路板和第二电路板上的插接端子对应插入插接座，使L型转接板贴合电路板表面，限位板卡入插接座的限位槽；通过螺栓将压板固定在插接座顶部，压紧插接端子；连接板通过凹槽与电路板上的凸起配合粘接，使连接带连接两个电路板，保护套包裹柔性电排。这种操作步骤中，连接带和加强筋能分担折叠或展开时产生的拉力，避免拉力集中在柔性电排上；限位板与限位槽的配合增强了插接部位的稳定性，减少柔性电排因晃动产生的额外拉力；保护套则对柔性电排形成物理保护，防止其直接受力磨损，从而解决了传统结构中柔性电排易断裂、老化的问题，延长了使用寿命。
Smart Images
Figure CN224789971U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit board technology, and in particular to a foldable flexible display driver circuit board. Background Technology
[0002] The foldable flexible display driver circuit board is the core control component of foldable flexible display devices. It is mainly used to receive external control signals and convert them into electrical signals to drive the display panel, enabling stable display of images, text, and other information. Based on flexible materials, it integrates key components such as driver chips, conductive lines, and signal interfaces. It possesses excellent bending and folding properties, allowing it to deform flexibly with the opening and closing of the display device without affecting the normal operation of the circuit.
[0003] Currently, the connection structure of foldable flexible display driver circuit boards has significant shortcomings, especially at the connection points between two circuit boards, which are easily damaged by tensile forces. In existing technologies, the two circuit boards are typically connected via a flexible busbar, with each end of the busbar connected to the interfaces of the two circuit boards to ensure signal and current transmission. However, during the folding or unfolding of the device, the two circuit boards will move relative to each other, and the resulting tensile force will act directly on the flexible busbar. Because the flexible busbar is soft and structurally fragile, its internal conductive lines are prone to breakage and aging after long-term repeated tensile stress, leading to signal transmission interruption or instability. Utility Model Content
[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.
[0005] Therefore, one objective of this utility model is to propose a foldable flexible display driving circuit board to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.
[0006] To achieve the above objectives, one embodiment of this utility model provides a foldable flexible display driving circuit board, including a first circuit board and a second circuit board symmetrically arranged. A connector is fixedly connected to the top of both the first and second circuit boards. A connector terminal is inserted into the inner wall of each connector. An L-shaped adapter plate is fixedly connected to one side of each connector terminal. The inner walls of the two adapter plates are respectively attached to the first and second circuit boards. A flexible busbar is fixedly connected between the two L-shaped adapter plates. The two connector terminals are electrically connected through the flexible busbar. A protective sleeve is fixedly connected between the two L-shaped adapter plates. The flexible busbar is located inside the protective sleeve. Two symmetrically arranged connecting plates are adhered to the side of both the first and second circuit boards near the flexible busbar. A connecting strip is fixedly connected between the two symmetrical connecting plates.
[0007] Preferably, in any of the above embodiments, the top and bottom surfaces of the connecting strip are fixedly connected with a plurality of linear array reinforcing ribs, and both the connecting strip and the reinforcing ribs are made of rubber.
[0008] Preferably, in any of the above embodiments, a pressure plate is fixedly installed on the top of each of the plug-in sockets by bolts, and the bottom surfaces of the two pressure plates are respectively in contact with the top surfaces of the two plug-in terminals.
[0009] Preferably, in any of the above solutions, the connecting plate has a plurality of linearly arrayed grooves on the side away from the connecting strip, and the first circuit board and the second circuit are each fixedly connected to a plurality of protrusions that are adapted to the grooves on the side near the flexible busbar.
[0010] Preferably, in any of the above solutions, the top of the connector has two symmetrically arranged limiting grooves, and the left and right sides of the L-shaped adapter plate are fixedly connected to limiting plates, and the two limiting plates are engaged with the connector through the limiting grooves.
[0011] Preferably, of any of the above solutions, the protective sleeve is made of rubber, and the length of the protective sleeve is less than the length of the flexible busbar.
[0012] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. To reduce the tensile force on the flexible busbar and improve its durability, the specific operating steps are as follows: Insert the corresponding plug terminals on the first and second circuit boards into the plug socket, so that the L-shaped adapter plate fits against the surface of the circuit board, and the limiting plate is inserted into the limiting groove of the plug socket; fix the pressure plate to the top of the plug socket with bolts to press the plug terminals; the connecting plate is bonded to the protrusion on the circuit board through the groove, so that the connecting strip connects the two circuit boards, and the protective sleeve wraps around the flexible busbar. In this operating procedure, the connecting strip and reinforcing ribs can share the tensile force generated when folding or unfolding, avoiding the tensile force being concentrated on the flexible busbar; the cooperation between the limiting plate and the limiting groove enhances the stability of the plug-in part and reduces the additional tensile force generated by the swaying of the flexible busbar; the protective sleeve provides physical protection for the flexible busbar, preventing it from being directly subjected to force and wear, thereby solving the problems of easy breakage and aging of flexible busbars in traditional structures and extending its service life.
[0013] 2. To enhance overall structural stability and ensure stable signal transmission, the specific operating steps are as follows: During installation, ensure the plug-in terminals are fully inserted into the plug-in socket, the L-shaped adapter plate is tightly fitted to the circuit board, and the plug-in terminals are further secured by the pressure plate; the reinforcing ribs on the connecting strip enhance its toughness and, in conjunction with the connecting plate, limit the relative displacement of the two circuit boards; the protective sleeve wraps around the flexible busbar to reduce the impact of the external environment. In this operating procedure, the cooperation between the pressure plate and the plug-in socket ensures the firmness of the connection between the plug-in terminals and the circuit board, avoiding poor contact; the snap-fit between the limiting plate and the limiting groove improves the stability of the L-shaped adapter plate, ensuring reliable connection at both ends of the flexible busbar; the connecting strip and reinforcing ribs enhance the overall structure's resistance to deformation, ensuring that the flexible busbar maintains a stable connection state during folding or unfolding, guaranteeing the continuity and stability of signal transmission. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of the assembly of this utility model; Figure 2 This is a schematic diagram of the structure of the second circuit board of this utility model; Figure 3 This is a schematic diagram of the structure of the first circuit board of this utility model; Figure 4 This is a schematic diagram of the connecting strip of this utility model; Figure 5 This is a schematic diagram of the structure of the plug-in socket of this utility model; Figure 6 This is an exploded structural diagram of the connector of this utility model.
[0015] In the diagram: 1-First circuit board, 2-Second circuit board, 3-Socket, 4-Socket terminal, 5-Adapter plate, 6-Flexible busbar, 7-Protective sleeve, 8-Connecting plate, 9-Connecting strip, 10-Reinforcing rib, 11-Pressure plate, 12-Groove, 13-Protrusion, 14-Limiting groove, 15-Limiting plate, 16-L-shaped adapter plate. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.
[0017] like Figures 1 to 6As shown, a foldable flexible display driving circuit board includes a first circuit board 1 and a second circuit board 2 symmetrically arranged. A connector 3 is fixedly connected to the top of both the first circuit board 1 and the second circuit board 2. A connector terminal 4 is inserted into the inner wall of each connector 3. An L-shaped adapter plate 16 is fixedly connected to one side of each connector terminal 4. The inner walls of the two adapter plates 16 are respectively attached to the first circuit board 1 and the second circuit board 2. A flexible busbar 6 is fixedly connected between the two L-shaped adapter plates 16. The two connector terminals 4 are electrically connected through the flexible busbar 6. A protective sleeve 7 is fixedly connected between the two L-shaped adapter plates 16. The flexible busbar 6 is located inside the protective sleeve 7. Two symmetrically arranged connecting plates 8 are adhered to the side of the first circuit board 1 and the second circuit board near the flexible busbar 6. A connecting strip 9 is fixedly connected between the two symmetrical connecting plates 8.
[0018] As an optional technical solution of this utility model, the top and bottom surfaces of the connecting strip 9 are fixedly connected with a number of linear array reinforcing ribs 10. The connecting strip 9 and the reinforcing ribs 10 are both made of rubber. The rubber material itself has good elasticity and tensile strength. The reinforcing ribs 10 further disperse the tensile force on the connecting strip 9 when folding or unfolding, and prevent the connecting strip 9 from breaking due to long-term stress, thereby more effectively distributing the tensile force acting on the flexible electric busbar 6 and protecting the flexible electric busbar 6 from excessive stretching.
[0019] As an optional technical solution of this utility model, a pressure plate 11 is fixedly installed on the top of each plug-in 3 by bolts. The bottom surfaces of the two pressure plates 11 are respectively attached to the top surfaces of the two plug-in terminals 4. The pressure plates 11 exert continuous pressure on the plug-in terminals 4 to prevent the plug-in terminals 4 from loosening or falling out of the plug-in 3 during the folding, unfolding or vibration of the equipment, so as to ensure the stable electrical connection between the flexible busbar 6 and the circuit board and avoid signal transmission interruption.
[0020] As an optional technical solution of this utility model, the connecting plate 8 has a plurality of linearly arrayed grooves 12 on the side away from the connecting strip 9. The first circuit board 1 and the second circuit are fixedly connected to a plurality of protrusions 13 that are adapted to the grooves 12 on the side near the flexible busbar 6. The cooperation between the grooves 12 and the protrusions 13 increases the contact area and friction between the two, preventing the connecting plate 8 from sliding relative to the circuit board when under force, ensuring that the connecting strip 9 can stably share the tension, and at the same time enhancing the integrity of the overall structure.
[0021] As an optional technical solution of this utility model, the top of the plug-in base 3 is provided with two symmetrically arranged limiting grooves 14. The left and right sides of the L-shaped adapter plate 16 are fixedly connected to limiting plates 15. The two limiting plates 15 are engaged with the plug-in base 3 through the limiting grooves 14. The limiting plates 15 are embedded in the limiting grooves 14, which restricts the movement of the L-shaped adapter plate 16 in the horizontal direction and prevents it from shifting or shaking when the equipment is in operation. This ensures the connection position of the flexible busbar 6 and the plug-in terminal 4 is stable and reduces the additional pulling force on the flexible busbar 6 caused by the displacement of the L-shaped adapter plate 16.
[0022] As an optional technical solution of this utility model, the protective sleeve 7 is made of rubber. The length of the protective sleeve 7 is less than the length of the flexible electric busbar 6. The rubber material has good flexibility and wear resistance, which can prevent the flexible electric busbar 6 from being scratched or worn by external objects. The shorter length of the protective sleeve 7 provides enough folding space for the flexible electric busbar 6, avoiding the protective sleeve 7 from restricting the bending of the flexible electric busbar 6 due to its excessive length, and ensuring that the equipment can be folded smoothly.
[0023] A foldable flexible display driver circuit board, the working principle of which is as follows: 1): Insert the plug terminals 4 on the first circuit board 1 and the second circuit board 2 into the plug socket 3, so that the L-shaped adapter plate 16 fits against the surface of the circuit board and the limiting plate 15 is inserted into the limiting groove 14 of the plug socket 3.
[0024] 2): Fix the pressure plate 11 to the top of the plug-in base 3 with bolts to press the plug-in terminal 4; the connecting plate 8 is bonded to the protrusion 13 on the circuit board through the groove 12, so that the connecting strip 9 connects the two circuit boards, and the protective sleeve 7 wraps the flexible busbar 6.
[0025] 3): The cooperation between the limiting plate 15 and the limiting groove 14 enhances the stability of the insertion part and reduces the extra tension caused by the shaking of the flexible electric busbar 6; the protective sleeve 7 provides physical protection for the flexible electric busbar 6 and prevents it from being directly subjected to force and wear.
[0026] In summary, the foldable flexible display driving circuit board inserts the plug terminals 4 on the first circuit board 1 and the second circuit board 2 into the plug socket 3, so that the L-shaped adapter plate 16 fits against the surface of the circuit board, and the limiting plate 15 is inserted into the limiting groove 14 of the plug socket 3; the pressure plate 11 is fixed to the top of the plug socket 3 by bolts to press the plug terminals 4; the connecting plate 8 is bonded to the protrusion 13 on the circuit board through the groove 12, so that the connecting strip 9 connects the two circuit boards, and the protective sleeve 7 wraps the flexible busbar 6. In this operation, the connecting strap 9 and the reinforcing rib 10 can share the tension generated during folding or unfolding, preventing the tension from being concentrated on the flexible busbar 6; the cooperation between the limiting plate 15 and the limiting groove 14 enhances the stability of the plug-in part and reduces the additional tension generated by the swaying of the flexible busbar 6; the protective sleeve 7 provides physical protection for the flexible busbar 6, preventing it from being directly subjected to force and wear, thereby solving the problem of easy breakage and aging of the flexible busbar in the traditional structure, and extending its service life. During installation, ensure that the plug-in terminal 4 is fully inserted into the plug-in socket 3, the L-shaped adapter plate 16 is tightly attached to the circuit board, and the plug-in terminal 4 is further fixed by the pressure plate 11; the reinforcing rib 10 on the connecting strap 9 enhances its toughness and cooperates with the connecting plate 8 to limit the relative displacement of the two circuit boards; the protective sleeve 7 wraps around the flexible busbar 6 to reduce the impact of the external environment on it. In this operating procedure, the cooperation between the pressure plate 11 and the plug-in socket 3 ensures the firmness of the connection between the plug-in terminal 4 and the circuit board, avoiding poor contact; the snap-fit between the limiting plate 15 and the limiting groove 14 improves the stability of the L-shaped adapter plate 16, ensuring reliable connection at both ends of the flexible electric busbar 6; the connecting strip 9 and the reinforcing rib 10 enhance the deformation resistance of the overall structure, so that the flexible electric busbar 6 always maintains a stable connection state during the folding or unfolding process, ensuring the continuity and stability of signal transmission.
Claims
1. A foldable flexible display driving circuit board, characterized in that: The circuit includes a first circuit board (1) and a second circuit board (2) arranged symmetrically. The top of the first circuit board (1) and the second circuit board (2) are fixedly connected to a socket (3). A socket terminal (4) is inserted into the inner wall of each socket (3). An L-shaped adapter plate (16) is fixedly connected to one side of each socket terminal (4). The inner walls of the two adapter plates (5) are respectively attached to the first circuit board (1) and the second circuit board (2). A flexible busbar (6) is fixedly connected between the two L-shaped adapter plates (16). The two socket terminals (4) are electrically connected through the flexible busbar (6). A protective sleeve (7) is fixedly connected between the two L-shaped adapter plates (16). The flexible busbar (6) is located inside the protective sleeve (7). Two symmetrically arranged connecting plates (8) are glued to the side of the first circuit board (1) and the second circuit board near the flexible busbar (6). A connecting strip (9) is fixedly connected between the two symmetrical connecting plates (8).
2. The foldable flexible display driving circuit board according to claim 1, characterized in that: The top and bottom surfaces of the connecting strip (9) are fixedly connected with a number of linear array reinforcing ribs (10), and the connecting strip (9) and the reinforcing ribs (10) are both made of rubber.
3. The foldable flexible display driving circuit board according to claim 2, characterized in that: Each of the plug-in sockets (3) has a pressure plate (11) fixedly installed on its top by bolts, and the bottom surfaces of the two pressure plates (11) are respectively attached to the top surfaces of the two plug-in terminals (4).
4. The foldable flexible display driving circuit board according to claim 3, characterized in that: The connecting plate (8) has a plurality of linear array grooves (12) on the side away from the connecting strip (9). The first circuit board (1) and the second circuit are fixedly connected to a plurality of protrusions (13) that are adapted to the grooves (12) on the side near the flexible busbar (6).
5. A foldable flexible display driving circuit board according to claim 4, characterized in that: The top of the plug-in base (3) has two symmetrically arranged limiting grooves (14), and the left and right sides of the L-shaped adapter plate (16) are fixedly connected to limiting plates (15). The two limiting plates (15) are engaged with the plug-in base (3) through the limiting grooves (14).
6. The foldable flexible display driving circuit board according to claim 5, characterized in that: The protective sleeve (7) is made of rubber, and the length of the protective sleeve (7) is less than the length of the flexible electric busbar (6).